KR101742052B1 - Touch input device - Google Patents

Abstract

A touch input device according to an embodiment includes: a first cover; A first electrode disposed under the first cover; A compression layer disposed under the first electrode; A second electrode and a third electrode disposed under the compression layer; A display module disposed below the compression layer; And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal, wherein the display module includes a first substrate layer and a first substrate layer, Wherein the second electrode layer and the third electrode are disposed on the first substrate layer, wherein one of the touch position sensing signal and the touch pressure sensing signal is electrically connected to the first electrode and the second electrode layer, Based on a capacitance between the first electrode and the third electrode, a capacitance between the second electrode and the capacitance between the first electrode and the third electrode, and the other is based on a capacitance between the second electrode and the third electrode, And the touch sensor detects the touch pressure based on the touch pressure sensing signal, and the driving unit detects the touch position driving signal and the touch pressure driving signal The sensing unit receives the touch position sensing signal from the first electrode, receives the touch pressure sensing signal from the third electrode, and the touch position sensing signal is applied to the first cover surface Wherein the touch sensing signal includes information on a mutual electrostatic capacity between the first electrode and the second electrode that changes according to a touch of the first electrode and the second electrode, Wherein the driving unit applies the touch position driving signal to the second electrode in a first time period and outputs the touch position driving signal to the second electrode in a second time period different from the first time period, Wherein the sensing unit receives the touch position sensing signal from the first electrode during the first time interval, The can receiving the touch pressure detecting signal from the third electrode.

Description

A touch input device {TOUCH INPUT DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch input device for detecting a pressure, and more particularly, to a touch input device for detecting a touch pressure precisely in a touch input device configured to detect a touch position.

Various types of input devices are used for the operation of the computing system. For example, an input device such as a button, a key, a joystick, and a touch screen is used. Due to the easy and simple operation of the touch screen, the use of the touch screen in the operation of the computing system is increasing.

The touch screen may comprise a touch surface of a touch input device including a touch sensor panel, which may be a transparent panel having a touch-sensitive surface. Such a touch sensor may be attached to the front of the display screen such that the touch-sensitive surface covers the visible side of the display screen. The user simply touches the touch screen with a finger or the like so that the user can operate the computing system. Generally, a computing system is able to recognize touch and touch locations on a touch screen and interpret the touch to perform operations accordingly.

At this time, there is a need for a touch input device capable of detecting not only the touch position according to the touch on the touch screen, but also the pressure magnitude of the touch.

An object of the present invention is to provide a touch input device capable of more precisely detecting a touch pressure by easily distinguishing a capacitance change caused by a touch and a capacitance change caused by a pressure.

A touch input device according to an embodiment of the present invention includes: a first cover; A first electrode disposed under the first cover; A compression layer disposed under the first electrode; A second electrode and a third electrode disposed under the compression layer; A display module disposed below the compression layer; And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal, wherein the display module includes a first substrate layer and a first substrate layer, Wherein the second electrode layer and the third electrode are disposed on the first substrate layer, wherein one of the touch position sensing signal and the touch pressure sensing signal is electrically connected to the first electrode and the second electrode layer, Based on a capacitance between the first electrode and the third electrode, a capacitance between the second electrode and the capacitance between the first electrode and the third electrode, and the other is based on a capacitance between the second electrode and the third electrode, And the touch sensor detects the touch pressure based on the touch pressure sensing signal, and the driving unit detects the touch position driving signal and the touch pressure driving signal The sensing unit receives the touch position sensing signal from the first electrode, receives the touch pressure sensing signal from the third electrode, and the touch position sensing signal is applied to the first cover surface Wherein the touch sensing signal includes information on a mutual electrostatic capacity between the first electrode and the second electrode that changes according to a touch of the first electrode and the second electrode, Wherein the driving unit applies the touch position driving signal to the second electrode in a first time period and outputs the touch position driving signal to the second electrode in a second time period different from the first time period, Wherein the sensing unit receives the touch position sensing signal from the first electrode during the first time interval, The can receiving the touch pressure detecting signal from the third electrode.

According to the embodiment of the present invention, it is possible to provide a touch input device capable of more precisely detecting the touch pressure by easily distinguishing the capacitance change caused by the touch and the capacitance change caused by the pressure.

1A and 1B are schematic diagrams of a capacitive touch sensor and its operation.
FIGS. 2A and 2B are views showing a detailed configuration of a display module in a touch input device according to an embodiment of the present invention.
3A to 3D are sectional views of a touch input device according to an embodiment of the present invention.
FIGS. 4A to 4D are cross-sectional views illustrating an operation example of the touch input device according to the embodiment of the present invention shown in FIGS. 3A to 3D.
5A to 5C are cross-sectional views of a touch input device according to another embodiment of the present invention.
6A and 6B are cross-sectional views for explaining an operation example of the touch input device according to the embodiment of the present invention shown in Figs. 5A to 5C.
7A and 7B are cross-sectional views of a touch input device according to another embodiment of the present invention.
FIGS. 8A and 8E are cross-sectional views illustrating an operation example of the touch input device according to the embodiment of the present invention shown in FIGS. 7A and 7B.
FIGS. 9A to 9D are views illustrating the shapes of the first electrode, the second electrode, and the third electrode included in the touch input device according to the embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Hereinafter, a capacitive touch sensor 10 is exemplified, but a touch sensor 10 capable of detecting a touch position in an arbitrary manner can be applied.

FIG. 1A is a schematic diagram of a touch sensor 10 of a capacitive type included in a touch input device according to an embodiment of the present invention and a configuration thereof for operation thereof. 1A, the touch sensor 10 includes a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. The touch sensor 10 includes a plurality of driving electrodes And a plurality of receiving electrodes RX1 to RXm for receiving a sensing signal including information on a capacitance change amount that changes in accordance with a touch on a touch surface, And a sensing unit 11 for sensing a touch position.

As shown in FIG. 1A, the touch sensor 10 may include a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. 1A, a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm of the touch sensor 10 are shown as an orthogonal array. However, the present invention is not limited to this, The electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm can have any number of dimensions including the diagonal, concentric and three-dimensional random arrangement, and the like and their application arrangements. Here, n and m are positive integers and may be the same or different from each other, and the size may be changed according to the embodiment.

The plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be arranged to cross each other. The driving electrode TX includes a plurality of driving electrodes TX1 to TXn extending in a first axis direction and a receiving electrode RX includes a plurality of receiving electrodes extending in a second axis direction intersecting the first axis direction RX1 to RXm).

9A and 9B, in the touch sensor 10 according to the embodiment of the present invention, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm are formed in the same layer . For example, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on a top surface of a display module 200 to be described later.

Also, as shown in FIG. 9C, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed in different layers. For example, one of the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm is formed on the upper surface of the display module 200, and the other is formed on the lower surface of the cover 100 Or may be formed inside the display module 200.

A plurality of drive electrodes (TX1 to TXn) and a plurality of receiving electrodes (RX1 to RXm) is a transparent conductive material (e.g., tin oxide (SnO ₂₎ and indium oxide _{(In 2 O 3) ITO (} Indium Tin made of such Oxide) or ATO (antimony tin oxide)). However, this is merely an example, and the driving electrode TX and the receiving electrode RX may be formed of another transparent conductive material or an opaque conductive material. For example, the driving electrode TX and the receiving electrode RX may include at least one of silver ink, copper, nano silver, and carbon nanotube (CNT) . In addition, the driving electrode TX and the receiving electrode RX may be realized by a metal mesh.

The driving unit 12 according to the embodiment of the present invention can apply a driving signal to the driving electrodes TX1 to TXn. In an embodiment of the present invention, the driving signal may be sequentially applied to one driving electrode at a time from the first driving electrode TX1 to the nth driving electrode TXn. This application of the driving signal can be repeated again. This is merely an example, and driving signals may be simultaneously applied to a plurality of driving electrodes according to an embodiment.

The sensing unit 11 acquires information on the electrostatic capacitance Cm generated between the driving electrodes TX1 to TXn and the receiving electrodes RX1 to RXm to which the driving signal is applied through the receiving electrodes RX1 to RXm And the touch position and the touch position can be detected by receiving the sensing signal. For example, the sensing signal may be a signal in which a driving signal applied to the driving electrode TX is coupled by a capacitance Cm: 14 generated between the driving electrode TX and the receiving electrode RX. The process of sensing the driving signal applied from the first driving electrode TX1 to the nth driving electrode TXn through the receiving electrodes RX1 to RXm may be referred to as scanning the touch sensor 10 .

For example, the sensing unit 11 may include a receiver (not shown) connected to each of the reception electrodes RX1 to RXm through a switch. The switch is turned on during a period of sensing the signal of the corresponding receiving electrode RX so that a sensing signal can be sensed from the receiving electrode RX at the receiver. The receiver may be comprised of an amplifier (not shown) and a feedback capacitor coupled between the negative input of the amplifier and the output of the amplifier, i. E., The feedback path. At this time, the positive input terminal of the amplifier may be connected to the ground. In addition, the receiver may further include a reset switch connected in parallel with the feedback capacitor. The reset switch can reset the conversion from current to voltage performed by the receiver. A negative input terminal of the amplifier may be connected to the corresponding receiving electrode RX to receive a current signal including information on the capacitance Cm, and integrate the current signal to convert the voltage into a voltage. The sensing unit 11 may further include an analog-to-digital converter (ADC) for converting the integrated data to digital data through the receiver. The digital data may then be input to a processor (not shown) and processed to obtain touch information for the touch sensor 10. The sensing unit 11 may be configured to include an ADC and a processor together with a receiver.

The control unit 13 may perform a function of controlling the operation of the driving unit 12 and the sensing unit 11. For example, the controller 13 may generate a driving control signal and transmit the driving control signal to the driving unit 12 so that the driving signal is applied to the driving electrode TX predetermined at a predetermined time. The control unit 13 generates a sensing control signal and transmits the sensing control signal to the sensing unit 11 so that the sensing unit 11 receives a sensing signal from the sensing electrode RX previously set at a predetermined time to perform a predetermined function can do.

In FIG. 1A, the driving unit 12 and the sensing unit 11 may constitute a touch detection device (not shown) capable of detecting whether or not to touch the touch sensor 10 and a touch position. The touch detection apparatus may further include a control section (13). The touch sensing device may be integrated on a touch sensing IC (touch sensing integrated circuit), which is a touch sensing circuit, in a touch input device including the touch sensor 10. The driving electrode TX and the receiving electrode RX included in the touch sensor 10 are included in the touch sensing IC through a conductive trace and / or a conductive pattern printed on a circuit board And may be connected to the driving unit 12 and the sensing unit 11. The touch sensing IC may be placed on a circuit board on which a conductive pattern is printed, for example, a first printed circuit board (hereinafter, referred to as a first PCB). According to the embodiment, the touch sensing IC may be mounted on a main board for operating the touch input device.

As described above, a capacitance Cm of a predetermined value is generated at each intersection of the driving electrode TX and the reception electrode RX. When an object such as a finger is close to the touch sensor 10, Can be changed. In FIG. 1A, the capacitance may represent mutual capacitance (Cm). The sensing unit 11 senses such electrical characteristics and can detect whether the touch sensor 10 is touched and / or touched. For example, it is possible to detect the touch and / or the position of the touch on the surface of the touch sensor 10 having the two-dimensional plane including the first axis and the second axis.

More specifically, the position of the touch in the second axial direction can be detected by detecting the drive electrode TX to which the drive signal is applied when a touch to the touch sensor 10 occurs. Likewise, the position of the touch in the first axis direction can be detected by detecting the capacitance change from the received signal received through the receiving electrode RX when touching the touch sensor 10.

In the above description, the operation of the touch sensor 10 for sensing the touch position has been described based on the amount of mutual capacitance change between the driving electrode TX and the receiving electrode RX, but the present invention is not limited to this. That is, as shown in FIG. 1B, it is also possible to sense the touch position based on the amount of change in self capacitance.

FIG. 1B is a schematic view for explaining still another capacitive touch sensor 10 included in the touch input device according to another embodiment of the present invention and its operation. A plurality of touch electrodes 30 are provided on the touch sensor panel 10 shown in FIG. 1B. The plurality of touch electrodes 30 may be arranged in a lattice pattern at regular intervals as shown in FIG. 9D, but the present invention is not limited thereto.

The driving control signal generated by the control unit 130 is transmitted to the driving unit 12 and the driving unit 12 applies the driving signal to the predetermined touch electrode 30 at a predetermined time based on the driving control signal. The sensing control signal generated by the control unit 13 is transmitted to the sensing unit 11. The sensing unit 11 senses the sensing signal from the touch electrode 30 preset at a predetermined time Receive input. At this time, the sensing signal may be a signal for the amount of change in self-capacitance formed on the touch electrode 30.

At this time, the presence or absence of a touch and / or the touch position with respect to the touch sensor panel 10 is detected by the sensing signal sensed by the sensing unit 11. For example, since the coordinates of the touch electrode 30 are known in advance, it is possible to detect the touch of the object with respect to the surface of the touch sensor 10 and / or its position.

Although the driving unit 12 and the sensing unit 11 are divided into separate blocks for the sake of convenience, the operation of applying the driving signal to the touch electrode 30 and the sensing signal from the touch electrode 30 May be performed by one driving and sensing unit.

The touch input device including the touch sensor 10 capable of detecting touch and / or touch position has been described above. By applying the present invention to the touch input device according to the embodiment of the present invention, it is possible to easily detect the touch pressure and / or the touch position as well as the touch pressure magnitude. Hereinafter, the case of detecting the touch pressure in the touch input device according to the embodiment of the present invention will be described in detail, for example.

3A to 3D are sectional views of a touch input device according to an embodiment of the present invention. 3A, the touch input device includes a cover 100, a first electrode 410 disposed under the cover 100, a compressed layer 300 disposed under the first electrode 410, A second electrode 420 and a third electrode 430 disposed under the compression layer 300 and a display module 200 disposed under the compression layer 300. The display module 200 includes a first substrate 300, And second substrate layers 252 and 262 disposed below first and second substrate layers 251 and 261 and second and fourth electrodes 420 and 430, Layers 251 and 261, respectively.

The cover 100 according to the embodiment of the present invention may be located at the top of the touch input device as a member to which a touch is input by the input means. The cover 100 protects the touch sensor 10 and the display module 200 disposed at the lower portion of the cover 100. The cover 100 covers the display module 200, And may be made of transparent glass or plastic. The cover 100 may be made of a flexible material that can be bent at a position where at least pressure is applied so that the compression layer 300 to be described later can be compressed when a pressure is applied to the cover 100.

The first electrode 410 according to an embodiment of the present invention is disposed below the cover 100 and the second electrode 420 is disposed below the first electrode 410 and the third electrode 430 is disposed below the cover 100. [ And may be disposed on the same layer as the second electrode 420.

The second electrode 420 and the third electrode 430 shown in FIG. 3A may be composed of a plurality of electrodes in a rhombic shape as shown in FIG. 9A. Here, the second electrode 420 is a plurality of first capacitor electrodes 510 connected to each other in the first axis direction, and the third electrode 430 is formed in a shape that is mutually connected in the second axis direction orthogonal to the first axis direction And at least one of the second electrode 420 and the third electrode 430 is connected to the second electrode 420 and the second electrode 420 through a bridge so that a plurality of diamond- And the third electrodes 430 may be insulated from each other. The second electrode 420 and the third electrode 430 shown in FIG. 3A may include a plurality of first capacitor electrodes 510 and a plurality of second capacitor electrodes 520, as shown in FIG. 9B The second electrode 420 and the third electrode 430 do not intersect with each other and each third electrode 430 is connected in a direction intersecting the extending direction of each of the second electrodes 420 Lt; / RTI >

9C, each of the second electrode 420 and the third electrode 430 includes a plurality of first capacitor electrodes 510 and a plurality of second capacitor electrodes 520, Or < / RTI >

The first electrode 410 and the second electrode 420, or the first electrode 410 and the third electrode 430 shown in FIG. 3A may overlap each other because they are located on different layers. For example, as shown in FIG. 9C, the first electrode 410 and the second electrode 420, or the first electrode 410 and the third electrode 430 may include a plurality of first capacitor electrodes 510 and a plurality of And a second capacitor electrode 520 of the second capacitor electrode 520, respectively. Alternatively, as shown in FIG. 9A, the rhombic first capacitor electrode 510 and the second capacitor electrode 520 may be located on different layers, respectively.

The first electrode 410 shown in FIG. 3A may be formed directly on the lower surface of the cover 100. 3A, the second electrode 420 and the third electrode 430 are disposed on the display module 200. However, the second electrode 420 and the third electrode 430 are not limited thereto, May be formed directly on the upper surfaces of the first substrate layers 251 and 261 of the display module 200 to be described later. At this time, the first electrode 410, the second electrode 420 and the third electrode 430 are formed of a transparent conductive material (for example, ITO (Indium Tin Oxide) or ATO (Antimony Tin Oxide) And may be formed of an opaque conductive material. The gap between the cover 100 and the first electrode 410, between the first electrode 410 and the compression layer 300, between the compression layer 300 and the second electrode 420 and the third electrode 430, An insulating film (not shown) made of a thin transparent plastic film such as PET (polyethylene terephthalate) may be disposed between the second electrode 420 and the third electrode 430 and the display module 200. At this time, even if the cover 100 is broken due to an external impact, the insulating film protects the electrodes disposed under the cover 100, thereby maintaining the touch input operation. At this time, an optical clear adhesive (OCA) (not shown) may be placed between the insulating film and the electrode or between the electrode and the compressing layer 300 to be adhered to each other.

The compression layer 300 according to the embodiment of the present invention is composed of a material that is pressed when the pressure is applied to the cover 100 and returns to the original state when the applied pressure is released. . The compression layer 300 may be made of silicon, acrylic or other compressible elastic material, and is disposed on the display module 200, so that the screen output from the display module 200 can be made of a transparent material have.

The display module 200 according to the embodiment of the present invention may be a display panel included in a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED) have. Accordingly, the user can perform an input action by touching the touch surface while visually checking the screen displayed on the display panel. At this time, the display module 200 receives input from a central processing unit (CPU) or an application processor (CPU), which is a central processing unit on a main board for operating the touch input device, The control circuit may include a control circuit. This control circuit can be mounted on a second printed circuit board (hereinafter referred to as a second PCB). At this time, the control circuit for the operation of the display panel 200 may include a display panel control IC, a graphic controller IC, and other circuits necessary for the operation of the display panel.

FIG. 2A shows a display module 200 including an LCD panel, and FIG. 2B shows a display module 200 including an AMOLED panel.

In the present specification, reference numeral 200A may refer to a display panel included in the display module 200. As shown in FIG. 2A, the display panel 200A includes a liquid crystal layer 250 including a liquid crystal cell, a first substrate layer 251 including electrodes at both ends of the liquid crystal layer 250, A first polarizing layer 253 and a second polarizing layer 252 are formed on one surface of the first substrate layer 251 as a direction opposite to the liquid crystal layer 250, And a second polarizing layer 254. It will be apparent to those skilled in the art that the LCD panel may further include other configurations for performing the display function and may be modified. Here, the first substrate layer 251 may be a color filter glass, and the second substrate layer 252 may be a TFT glass. Also, at least one of the first substrate layer 251 and the second substrate layer 252 may be formed of a bendable material such as a plastic.

In this case, the display module 200 including the LCD panel may include a display panel 200A and a backlight unit (not shown) disposed under the display panel 200A. The display panel 200A, which is an LCD panel, does not emit light itself, but functions to block or transmit light. Accordingly, a light source is positioned below the display panel 200A, and light is displayed on the display panel 200A to display information having various colors as well as brightness and darkness on the screen. Since the display panel 200A, which is an LCD panel, can not emit light as a passive element, a light source having a uniform luminance distribution on the back surface is required.

The display panel 200A may include an organic layer 260 and a first substrate layer 261 and a second substrate layer 262 located at both ends of the organic layer 260. [ It will be apparent to those skilled in the art that the AMOLED panel may further include other configurations for performing the display function and may be modified. Here, the first substrate layer 261 may be an encapsulation glass, and the second substrate layer 262 may be a TFT glass. Also, at least one of the first substrate layer 261 and the second substrate layer 262 may be formed of a bendable material such as a plastic according to an embodiment.

FIGS. 3B and 3C are cross-sectional views illustrating a modified example of the touch input device according to the embodiment of the present invention shown in FIG. 3A.

As shown in FIG. 3B, the touch input device may further include a second cover 120. FIG. At this time, the second cover 120 may be made of transparent glass or plastic so that the screen output from the display module 200 disposed at the lower part can be seen from the outside. The first cover 100 may be made of a relatively hard material or thicker than the first cover 100 so that the second cover 120 is relatively less bent than the first cover 100 even if a pressure is applied thereto.

The touch input device according to the embodiment of the present invention includes a first cover 100, a first electrode 410 disposed under the first cover 100, a first electrode 410 disposed under the first electrode 410, A second cover 120 disposed below the compression layer 300, a second electrode 420 and a third electrode 430 disposed under the second cover 120, a second cover 120, The display module 200 includes a first substrate layer 251 and 261 and a second substrate layer 252 and 262 disposed under the first substrate layer 251 and 261 And the second electrode 420 and the third electrode 430 may be disposed on the first substrate layer 251 and the first substrate layer 261. The configuration of the second cover 120, the second electrode 420 and the third electrode 430 of the touch input device shown in FIG. 3B and the display module 200 is the same as that of the conventional touch input device As shown in Fig. Accordingly, the touch input device capable of detecting the touch pressure can be realized by adding the touch pressure detection module composed of the first cover 100, the first electrode 410, and the compression layer 300 to the existing touch input device , There is no need to change the structure of the existing touch input device, and reliability can be secured easily. 3B illustrates that the second electrode 420 and the third electrode 430 are disposed on the display module 200. However, the second electrode 420 and the third electrode 430 are not limited thereto, May be formed directly on the upper surfaces of the first substrate layers 251 and 261 of the display module 200.

3C, the touch input device according to the embodiment of the present invention includes a first cover 100, a first electrode 410 disposed under the first cover 100, The second electrode 420 and the third electrode 430 disposed under the compressed layer 300 disposed under the first electrode 430 and the second electrode 420 and the third electrode 430 disposed under the compressed layer 300, 2 cover 120 and a display module 200 disposed under the second cover 120. [ The touch position and touch pressure of the first cover 100, the first electrode 410, the compression layer 300, the second electrode 420, the third electrode 430 and the second cover 120, The module for detecting the touch position and the touch pressure can be replaced with the display module 200 separately.

FIG. 3D is a cross-sectional view for explaining a modification of the touch input device according to the embodiment of the present invention shown in FIG. 3A.

3, the touch input device according to the embodiment of the present invention includes a cover 100, a second electrode 420 and a third electrode 430 disposed under the cover 100, A first electrode 410 disposed under the compression layer 300 and a second electrode 410 disposed under the second electrode 420 and the third electrode 430. The first electrode 410 is disposed under the first electrode 410, (200). The position of the first electrode 410, the second electrode 420 and the third electrode 430 is changed as compared with the touch input device shown in FIG. 3A.

7A and 7B are cross-sectional views of a touch input device according to another embodiment of the present invention. For example, the touch input apparatus shown in FIG. 7A includes a cover 100, a first electrode 410 disposed under the cover 100, a compressed layer 300 disposed under the first electrode 410, 300, and a second electrode 420 and a third electrode 430 disposed in the display module.

Hereinafter, only parts different from the embodiment shown in Figs. 3A to 3D will be described.

According to an embodiment of the present invention, the second electrode 420 and the third electrode 430 may be disposed on the same layer.

The second electrode 420 and the third electrode 430 shown in FIG. 7A may be formed of a plurality of electrodes in a rhombic shape as shown in FIG. 9A. Here, the second electrode 420 is a plurality of first capacitor electrodes 510 connected to each other in the first axis direction, and the third electrode 430 is formed in a shape that is mutually connected in the second axis direction orthogonal to the first axis direction And at least one of the second electrode 420 and the third electrode 430 is connected to the second electrode 420 and the second electrode 420 through a bridge so that a plurality of diamond- And the third electrodes 430 may be insulated from each other. The second electrode 420 and the third electrode 430 shown in FIG. 7A are composed of a plurality of first capacitor electrodes 510 and a plurality of second capacitor electrodes 520, as shown in FIG. 9B The second electrode 420 and the third electrode 430 do not intersect with each other and each third electrode 430 is connected in a direction intersecting the extending direction of each of the second electrodes 420 Lt; / RTI >

9C, each of the second electrode 420 and the third electrode 430 includes a plurality of first capacitor electrodes 510 and a plurality of second capacitor electrodes 520, Or < / RTI >

In addition, the second electrode 420 and the third electrode 430 shown in FIG. 7A may be composed of a plurality of electrode cells 530 as shown in FIG. 9D. At this time, a plurality of first capacitor electrodes and a plurality of second capacitor electrodes of the type shown in FIG. 9B can be formed by grouping a plurality of electrode cells 530 as shown in FIG. 9D. More specifically, the electrode cells 530 grouped in the direction of the first capacitor electrode 510 shown in FIG. 9B are connected to each other through a metal layer, and the electrode layers 530 formed in the direction of the second capacitor electrode 520 The cells 530 may be connected to each other by using a metal layer different from the metal layer used to connect the electrode cells 530 grouped in the direction of the first capacitor electrode 510.

The second electrode 420 and the third electrode 430 may be formed on the upper surfaces of the second substrate layers 252 and 262 of the display module 200. The second electrode 420 and the third electrode 430 may be formed on the lower surface of the first substrate layer 251 or 261 of the display module 200 or may be formed on the lower surface of the second electrode 420 and the third electrode 430 One of which may be formed on the lower surface of the first substrate layer 251, 261 of the display module 200 and the other may be formed on the upper surface of the second substrate layer 252, 262 of the display module 200. At this time, the second electrode 420 and the third electrode 430 may be formed of a transparent conductive material (for example, ITO (Indium Tin Oxide) or ATO (Antimony Tin Oxide)) or an opaque conductive material . In this case, the second electrode 420 or the third electrode 430 may be a common electrode arranged for driving the display module 200.

7B is a cross-sectional view for explaining a modification of the touch input device according to the embodiment of the present invention shown in FIG. 7A.

As shown in FIG. 7B, the touch input device may further include a second cover 120. FIG. At this time, the second cover 120 may be made of transparent glass or plastic so that the screen output from the display module 200 disposed at the lower part can be seen from the outside. The first cover 100 may be made of a relatively hard material or thicker than the first cover 100 so that the second cover 120 is relatively less bent than the first cover 100 even if a pressure is applied thereto.

The touch input device according to the embodiment of the present invention includes a first cover 100, a first electrode 410 disposed under the first cover 100, a first electrode 410 disposed under the first electrode 410, A second cover 120 disposed below the compression layer 300, a display module 200 disposed below the second cover 120, and a second electrode 120 disposed inside the display module 200. [ 420 and a third electrode 430. 3B, by adding the touch pressure detection module including the first cover 100, the first electrode 410, and the compression layer 300 to the conventional touch input device, the touch pressure detection It is possible to realize a touch input device capable of realizing the advantage that the structure of the conventional touch input device is not changed and the reliability can be secured easily.

FIGS. 4A to 4D are cross-sectional views for explaining an operation example of the touch input device according to the embodiment of the present invention shown in FIGS. 3A to 3D, and FIGS. 8A to 8E are cross- 3A to 3D, and FIGS. 7A and 7B, respectively. FIG. 7A and FIG. 7B are cross-sectional views illustrating an operation example of the touch input device according to an embodiment of the present invention. An operation example of the first electrode 410, the second electrode 420, and the third electrode 430 will be described.

First Operation Example

4A and 8A, the driving unit 12 according to the embodiment of the present invention applies the touch position driving signal and the touch pressure driving signal to the second electrode 420, And receives the touch position sensing signal from the first electrode 410 and the touch pressure sensing signal from the third electrode 430.

1A, the sensing unit 11 senses the touch position of the first electrode 410 and the second electrode 420, which includes information on the mutual electrostatic capacity between the first electrode 410 and the second electrode 420, The touch position can be detected by receiving the sensing signal from the first electrode 410. [

When the cover 100 is pressurized, the compression layer 300 is compressed, and the distance between the first electrode 410 and the second electrode 420 and the third electrode 430 is reduced. When the first electrode 410 serves as a ground (reference potential), the second electrode 420 and the second electrode 420 are electrically connected to each other according to the distance between the reference potential and the second electrode 420 and the third electrode 430, The mutual capacitance between the three electrodes 430 is changed. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the second electrode 420 and the third electrode 430 that changes according to the pressure applied to the cover 100 3 electrode 430 to detect the touch pressure.

The controller 13 applies the touch position driving signal to the second electrode 420 in the first time period by time-dividing the time for applying the driving signal to the second electrode 420, The driving unit 12 may be controlled to apply the touch pressure driving signal to the second electrode 420 during the time period. In this case, the controller 13 receives the touch position sensing signal from the first electrode 410 in the first time interval, and receives the touch pressure sensing signal from the third electrode 430 in the second time interval. 11 can be controlled. At this time, the controller 13 may control the driving unit 12 to apply a voltage having the reference potential to the first electrode 410 in the second time period.

The control unit 13 can control the driving unit 12 to apply the touch position driving signal and the touch pressure driving signal to the second electrode 420 at the same time without time-sharing the time for applying the driving signal to the second electrode 420 have. In this case, the sensing unit 11 may receive the touch position sensing signal from the first electrode 410 and the touch pressure sensing signal from the third electrode 430 at the same time. In this case, the first electrode 410 may serve as a reference potential by the circuit configuration of the sensing unit connected to the first electrode 410. For example, if the circuit configuration to which the first electrode 410 is connected is a node such as Virtual GND of the OP-amp, it can serve as a reference potential.

Second Operation Example

4B and 8B, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the first electrode 410 and a touch pressure driving signal to the second electrode 420 And the sensing unit 11 may receive the touch position sensing signal and the touch pressure sensing signal from the third electrode 430. [

1A, the sensing unit 11 senses the touch position of the first electrode 410 and the third electrode 430, which includes information on the mutual capacitance between the first electrode 410 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the third electrode 430. [

When the cover 100 is pressurized, the compression layer 300 is compressed, and the distance between the first electrode 410 and the second electrode 420 and the third electrode 430 is reduced. When the first electrode 410 serves as a ground (reference potential), the second electrode 420 and the second electrode 420 are electrically connected to each other according to the distance between the reference potential and the second electrode 420 and the third electrode 430, The mutual capacitance between the three electrodes 430 is changed. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the second electrode 420 and the third electrode 430 that changes according to the pressure applied to the cover 100 3 electrode 430 to detect the touch pressure.

The control unit 13 receives the touch position sensing signal from the third electrode 430 in the first time interval and receives the touch position sensing signal from the third electrode 430 in the second time period different from the first time period, The controller may control the sensing unit 11 to receive the touch pressure sensing signal from the third electrode 430 during the time interval. In this case, the controller 13 applies a touch position drive signal to the first electrode 410 in a first time interval and applies a touch pressure drive signal to the second electrode 420 in a second time interval, Can be controlled. At this time, the controller 13 may control the driving unit 12 to apply the voltage that the first electrode 410 can have the reference potential to the first electrode 410 in the second time period.

Third operation example

4C and 8C, the driving unit 12 according to the embodiment of the present invention applies the touch position driving signal and the touch pressure driving signal to the second electrode 420, And receives the touch position sensing signal from the third electrode 430 and the touch pressure sensing signal from the first electrode 410.

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the third electrode 430. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. At this time, the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 changes according to a change in distance between the first electrode 410 and the second electrode 420. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 that changes according to the pressure applied to the cover 100. That is, 1 electrode 410 and can detect the touch pressure.

The controller 13 applies the touch position driving signal to the second electrode 420 in the first time period by time-dividing the time for applying the driving signal to the second electrode 420, The driving unit 12 may be controlled to apply the touch pressure driving signal to the second electrode 420 during the time period. In this case, the controller 13 receives the touch position sensing signal from the third electrode 430 in the first time interval and receives the touch pressure sensing signal from the first electrode 410 in the second time interval 11 can be controlled.

The control unit 13 can control the driving unit 12 to apply the touch position driving signal and the touch pressure driving signal to the second electrode 420 at the same time without time-sharing the time for applying the driving signal to the second electrode 420 have. In this case, the sensing unit 13 receives the touch position sensing signal from the third electrode 430 and simultaneously receives the touch pressure sensing signal from the first electrode 410.

Fourth operation example

4D and FIG. 8D, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420, and outputs a touch pressure driving signal to the first electrode 410 And the sensing unit 11 may receive the touch position sensing signal and the touch pressure sensing signal from the third electrode 430. [

1A, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the mutual capacitance between the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the third electrode 430. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the third electrode 430. At this time, the mutual electrostatic capacitance between the first electrode 410 and the third electrode 430 changes according to a change in distance between the first electrode 410 and the third electrode 430. Therefore, the sensing unit 11 senses the touch pressure sensing signal including information on the mutual electrostatic capacity between the first electrode 410 and the third electrode 430, which is changed according to the pressure applied to the cover 100, 3 electrode 430 to detect the touch pressure.

The control unit 13 receives the touch position sensing signal from the third electrode 430 in the first time interval and receives the touch position sensing signal from the third electrode 430 in the second time period different from the first time period, The controller may control the sensing unit 11 to receive the touch pressure sensing signal from the third electrode 430 during the time interval. In this case, the controller 13 applies the touch position drive signal to the second electrode 420 in the first time interval and applies the touch pressure drive signal to the first electrode 410 in the second time interval Can be controlled.

Fifth operation example

4C and FIG. 8C, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420 and outputs a touch pressure driving signal to the first electrode 410 The sensing unit 11 receives the touch position sensing signal from the third electrode 430 and receives the touch pressure sensing signal from the first electrode 410. [

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the third electrode 430. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed and thus the first electrode 410 and the second electrode 420 and / or the first electrode 410 and the third electrode 430 The distance becomes smaller. When the second electrode 420 and / or the third electrode 430 serve as a ground (reference potential), the first electrode 410 and the second electrode 420 and / or the first electrode 410 And the third electrode 430, the self-capacitance of the first electrode 410 changes. Therefore, the sensing unit 11 receives the touch pressure sensing signal including the information about the self-capacitance of the first electrode 410, which changes according to the pressure applied to the cover 100, from the first electrode 410 The touch pressure can be detected.

The controller 13 applies the touch position driving signal to the second electrode 420 in the first time period by time-dividing the time for applying the driving signal to the second electrode 420, A touch pressure driving signal may be applied to the first electrode 410 and the driving unit 12 may be controlled so that the second electrode 420 and / or the third electrode 430 may serve as a ground. In this case, the controller 13 receives the touch position sensing signal from the third electrode 430 in the first time interval and receives the touch pressure sensing signal from the first electrode 410 in the second time interval 11 can be controlled.

The control unit 13 applies the touch position drive signal to the second electrode 420 without time-sharing the time for applying the drive signal to the second electrode 420, and simultaneously applies the touch pressure drive signal to the first electrode 410 It is possible to control the driving unit 12 to apply the same. In this case, the sensing unit 13 receives the touch position sensing signal from the third electrode 430 and simultaneously receives the touch pressure sensing signal from the first electrode 410. In this case, the third electrode 430 may serve as a reference potential due to the circuit configuration of the sensing unit connected to the third electrode 430. For example, if the circuit configuration to which the third electrode 430 is connected is a node such as Virtual GND of the OP-amp, it can serve as a reference potential.

Example 6

4D and FIG. 8D, the driving unit 12 according to the embodiment of the present invention applies a touch position drive signal to the second electrode 420 and a touch pressure drive signal to the third electrode 430 And the sensing unit 11 may receive the touch position sensing signal and the touch pressure sensing signal from the third electrode 430. [

1A, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the mutual capacitance between the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the third electrode 430. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the third electrode 430. When the first electrode 410 serves as a ground (reference potential), the self-capacitance of the third electrode 430 changes according to the distance between the first electrode 410 and the third electrode 430 . Therefore, the sensing unit 11 receives the touch pressure sensing signal including information on the self-capacitance of the third electrode 430, which changes according to the pressure applied to the cover 100, from the third electrode 430 The touch pressure can be detected.

The control unit 13 receives the touch position sensing signal from the third electrode 430 in the first time interval and receives the touch position sensing signal from the third electrode 430 in the second time period different from the first time period, The controller may control the sensing unit 11 to receive the touch pressure sensing signal from the third electrode 430 during the time interval. In this case, the controller 13 applies the touch position driving signal to the second electrode 420 in the first time interval, applies the touch pressure driving signal to the third electrode 430 in the second time interval, The driving unit 12 can be controlled so that the driving unit 410 can serve as a ground.

Seventh Operation Example

8E, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420 and the third electrode 430, and applies a touch pressure driving signal to the second electrode 420 and the third electrode 430, And the sensing unit 11 receives the touch position sensing signal from the second electrode 420 and the third electrode 430 and receives the touch pressure sensing signal from the first electrode 410 have.

1B, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the self-capacitance of each of the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the second electrode 420 and the third electrode 430, respectively.

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. At this time, the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 changes according to a change in distance between the first electrode 410 and the second electrode 420. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 that changes according to the pressure applied to the cover 100. That is, 1 electrode 410 and can detect the touch pressure.

The control unit 13 divides the time for applying the driving signal to the second electrode 420 and the third electrode 430 in a time division manner and outputs the touch position driving signal to the second electrode 420 and the third electrode 430 And to apply the touch pressure driving signal to the second electrode 420 in a second time period different from the first time period. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 and the third electrode 430 in the first time interval, and detects the touch pressure from the first electrode 410 in the second time interval It is possible to control the sensing unit 11 to receive the signal. In this case, the controller 13 may control the first electrode 410 to have a floating or high impedance in a first time interval, or the first electrode 410 may not cover the entire upper surface of the display module 200, It is possible to easily detect the touch position from the second electrode 420 and the third electrode 430.

The control unit 13 applies the touch position drive signal to the second electrode 420 and the third electrode 430 without time-sharing the time for applying the driving signal to the second electrode 420 and the third electrode 430 And simultaneously controls the driving unit 12 to apply the touch pressure driving signal to the second electrode 420. In this case, the sensing unit 13 receives the touch position sensing signal from the second electrode 420 and the third electrode 430, and simultaneously receives the touch pressure sensing signal from the first electrode 410. At this time, the first electrode 410 may be configured not to cover the entire upper surface of the display module 200, so that the touch position can be easily detected from the second electrode 420 and the third electrode 430 .

Example 8

8E, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420 and the third electrode 430, and outputs a touch pressure driving signal to the first electrode The sensing unit 11 may receive the touch position sensing signal from the second electrode 420 and the third electrode 430 and may receive the touch pressure sensing signal from the second electrode 420. [ have.

1B, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the self-capacitance of each of the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the second electrode 420 and the third electrode 430, respectively.

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. At this time, the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 changes according to a change in distance between the first electrode 410 and the second electrode 420. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 that changes according to the pressure applied to the cover 100. That is, Electrode 420 to detect the touch pressure.

At this time, the controller 13 time-divides the time for detecting the sensing signal from the second electrode 420 and the third electrode 430, and outputs the touch position sensing signal to the second electrode 420 and the third electrode 420 in the first time period. The controller may control the sensing unit 11 to receive the touch pressure sensing signal from the electrode 430 and receive the touch pressure sensing signal from the second electrode 420 during a second time period different from the first time period. In this case, the controller 13 applies the touch position drive signal to the second electrode 420 and the third electrode 430 in the first time interval, and transmits the touch pressure drive signal to the first electrode 410 The driving unit 12 can be controlled. In this case, the controller 13 may control the first electrode 410 to have a floating or high impedance in a first time interval, or the first electrode 410 may not cover the entire upper surface of the display module 200, It is possible to easily detect the touch position from the second electrode 420 and the third electrode 430.

Example 9

8E, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420 and the third electrode 430, and outputs a touch pressure driving signal to the first electrode The sensing unit 11 receives the touch position sensing signal from the second electrode 420 and the third electrode 430 and receives the touch pressure sensing signal from the first electrode 410 have.

1B, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the self-capacitance of each of the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the second electrode 420 and the third electrode 430, respectively.

When the pressure is applied to the cover 100, the compression layer 300 is compressed and thus the first electrode 410 and the second electrode 420 and / or the first electrode 410 and the third electrode 430 The distance becomes smaller. When the second electrode 420 and / or the third electrode 430 serve as a ground (reference potential), the first electrode 410 and the second electrode 420 and / or the first electrode 410 And the third electrode 430, the self-capacitance of the first electrode 410 changes. Therefore, the sensing unit 11 receives the touch pressure sensing signal including the information about the self-capacitance of the first electrode 410, which changes according to the pressure applied to the cover 100, from the first electrode 410 The touch pressure can be detected.

The control unit 13 divides the time for applying the driving signal to the second electrode 420 and the third electrode 430 in a time division manner and outputs the touch position driving signal to the second electrode 420 and the third electrode 430 The touch electrode driving signal is applied to the first electrode 410 and the second electrode 420 and / or the third electrode 430 serve as a ground in the second time period different from the first time period The driving unit 12 can be controlled. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 and the third electrode 430 in the first time interval, and detects the touch pressure from the first electrode 410 in the second time interval It is possible to control the sensing unit 11 to receive the signal. In this case, the controller 13 may control the first electrode 410 to have a floating or high impedance in a first time interval, or the first electrode 410 may not cover the entire upper surface of the display module 200, It is possible to easily detect the touch position from the second electrode 420 and the third electrode 430.

The control unit 13 applies the touch position drive signal to the second electrode 420 and the third electrode 430 without time-sharing the time for applying the driving signal to the second electrode 420 and the third electrode 430 And simultaneously controls the driving unit 12 to apply the touch pressure driving signal to the first electrode 410. In this case, the sensing unit 13 receives the touch position sensing signal from the second electrode 420 and the third electrode 430, and simultaneously receives the touch pressure sensing signal from the first electrode 410. At this time, by the circuit configuration of the sensing unit connected to the second electrode 420 and / or the third electrode 430 in a time period during which the touch position sensing signal is received from the second electrode 420 and the third electrode 430, The second electrode 420 and / or the third electrode 430 may serve as a reference potential. For example, if the circuit configuration in which the second electrode 420 and / or the third electrode 430 are connected is the same node as the virtual GND of the OP-amp, it can serve as a reference potential.

Example 10

8E, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the second electrode 420 and the third electrode 430, and applies a touch pressure driving signal to the second electrode 420 and the third electrode 430, The sensing unit 11 receives the touch position sensing signal from the second electrode 420 and the third electrode 430 and applies the sensing signal to the second electrode 420 and / And / or the third electrode (430).

1B, the sensing unit 13 senses the touch position of the second electrode 420 and the third electrode 430, which includes information on the self-capacitance of each of the second electrode 420 and the third electrode 430, The touch position can be detected by receiving the sensing signal from the second electrode 420 and the third electrode 430, respectively.

When the pressure is applied to the cover 100, the compression layer 300 is compressed and thus the first electrode 410 and the second electrode 420 and / or the first electrode 410 and the third electrode 430 The distance becomes smaller. When the first electrode 410 serves as a ground (reference potential), the capacitance of the second electrode 420 and the capacitance of the second electrode 420 are changed according to a change in distance between the first electrode 410 and the second electrode 420. And / or the electrostatic capacitance of the third electrode 430 changes according to a change in the distance between the first electrode 410 and the third electrode 430. Accordingly, the sensing unit 11 may receive a touch pressure sensing signal from the second electrode 420, which includes information on the self-capacitance of the second electrode 420, which is changed according to the pressure applied to the cover 100, and / Or a touch pressure sensing signal including information on the self-capacitance of the third electrode 430 from the third electrode 430 to detect the touch pressure.

The control unit 13 time-divides the time for detecting the sensing signal from the second electrode 420 and the third electrode 430 and outputs the touch position sensing signal to the second electrode 420 and the third electrode 430 And to control the sensing unit 11 to receive the touch pressure sensing signal from the second electrode 420 and / or the third electrode 430 during a second time interval different from the first time interval . In this case, the controller 13 applies the touch position drive signal to the second electrode 420 and the third electrode 430 in the first time interval, and transmits the touch pressure drive signal to the second electrode 420 And / or the third electrode 430 to control the driving unit 12 so that the first electrode 410 may serve as a ground. In this case, the controller 13 may control the first electrode 410 to have a floating or high impedance in a first time interval, or the first electrode 410 may not cover the entire upper surface of the display module 200, It is possible to easily detect the touch position from the second electrode 420 and the third electrode 430.

In the above description, the touch input device shown in Figs. 4A to 4D and Fig. 7A in which the AMOLED panel shown in Fig. 2B is included as the display module 200 in the touch input device shown in Fig. 8A to 8E included as the display module 200, the first to tenth operation examples have been described. However, the present invention is not limited to the first to tenth operation examples, And a touch input device shown in FIG. 7B, a touch input device to which the second cover of FIG. 3B or FIG. 3C is applied to the touch input device shown in FIG. 3D not shown, The touch input device in which the LCD panel shown in FIG. 2A is included as the display module 200 and the touch input device shown in FIG. 7A or FIG. 7B include a touch input Applicable to all devices.

5A to 5C are cross-sectional views of a touch input device according to another embodiment of the present invention. 5A includes a cover 100, a first electrode 410 disposed under the cover 100, a compression layer 300 disposed under the first electrode 410, a compression layer 300 A display module 200 disposed under the compression layer 300 and a third electrode 430 disposed inside the display module 300. The display module 200 includes a display panel 200, The second electrode layer 420 includes a first substrate layer 251 and a second substrate layer 252 disposed under the first substrate layer 251 and a second substrate layer 252, , 261, respectively.

Hereinafter, only parts different from the embodiment shown in Figs. 3A to 3D will be described.

The first electrode 410, the second electrode 420, and the third electrode 430 shown in FIG. 5A are located on different layers and may overlap each other. For example, the first electrode 410 and the second electrode 420, or the first electrode 410 and the third electrode 430 or the second electrode 420 and the third electrode 430 may be formed as shown in FIG. 9C Similarly, each of the first capacitor electrode 510 and the second capacitor electrode 520 may be arranged so as to cross each other. Alternatively, as shown in FIG. 9A, the rhombic first capacitor electrode 510 and the second capacitor electrode 520 may be located on different layers, respectively.

The first electrode 410 shown in FIG. 5A may be formed directly on the lower surface of the cover 100. 5A, the second electrode 420 is disposed on the first substrate layer 251, and the second electrode 420 is disposed on the first substrate layer 251, 261). The third electrode 430 may be formed on the upper surface of the second substrate layer 252, 262 of the display module 200. In addition, a third electrode 430 may be formed on the bottom surface of the first substrate layer 251, 261 of the display module 200. At this time, the first electrode 410, the second electrode 420 and the third electrode 430 are formed of a transparent conductive material (for example, ITO (Indium Tin Oxide) or ATO (Antimony Tin Oxide) And may be formed of an opaque conductive material. In this case, the third electrode 430 may be a common electrode arranged to drive the display module 200.

5B and 5C are cross-sectional views illustrating a modification of the touch input device according to the embodiment of the present invention shown in FIG. 5A.

As shown in FIG. 5B, the touch input device may further include a second cover 120. FIG. At this time, the second cover 120 may be made of transparent glass or plastic so that the screen output from the display module 200 disposed at the lower part can be seen from the outside. The first cover 100 may be made of a relatively hard material or thicker than the first cover 100 so that the second cover 120 is relatively less bent than the first cover 100 even if a pressure is applied thereto.

The touch input device according to the embodiment of the present invention includes a first cover 100, a first electrode 410 disposed under the first cover 100, a first electrode 410 disposed under the first electrode 410, A second cover 420 disposed below the second cover 120 and a second cover 420 disposed below the second cover 120. The first cover 420 is disposed under the second cover 120, And a third electrode 430 disposed within the display module 200. The display module 200 includes a first substrate layer 251 and a first substrate layer 251 and a second substrate layer 251 under the first substrate layer 251 And the second electrode 420 may be disposed on the first substrate layer 251, 261. The second substrate layer 252, 3B, by adding the touch pressure detection module including the first cover 100, the first electrode 410, and the compression layer 300 to the conventional touch input device, the touch pressure detection It is possible to realize a touch input device capable of realizing the advantage that the structure of the conventional touch input device is not changed and the reliability can be secured easily. 5B illustrates that the second electrode 420 is disposed on the first substrate layer 251 and the second electrode layer 252 of the display module 200. However, 261, respectively.

5C, a touch input device according to an embodiment of the present invention includes a first cover 100, a first electrode 410 disposed under the first cover 100, A second electrode 420 disposed under the compressed layer 300, a second cover 120 disposed under the second electrode 420, and a second cover 420 disposed under the second cover 120. [ A disposed display module 200, and a third electrode 430 disposed within the display module 200. 3C, a touch including the first cover 100, the first electrode 410, the compressed layer 300, the second electrode 420, and the second cover 120, Since the module for detecting the position and the touch pressure is completely separated from the display module 200, there is an advantage that the module for detecting the touch position and the touch pressure and the display module 200 can be separately replaced.

FIGS. 6A and 6B are cross-sectional views for explaining an operation example of the touch input device according to the embodiment of the present invention shown in FIGS. 5A to 5C. Hereinafter, An example of operation of the first electrode 410, the second electrode 420 and the third electrode 430 will be described.

Example 11

6A, the driving unit 12 according to the embodiment of the present invention applies the touch position driving signal and the touch pressure driving signal to the third electrode 430, and the sensing unit 11 applies the touch position driving signal and the touch pressure driving signal to the second electrode 420 and receive the touch pressure sensing signal from the first electrode 410. [

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the third electrode 430. At this time, the mutual electrostatic capacitance between the first electrode 410 and the third electrode 430 changes according to a change in distance between the first electrode 410 and the third electrode 430. Therefore, the sensing unit 11 senses the touch pressure sensing signal including information on the mutual electrostatic capacity between the first electrode 410 and the third electrode 430, which is changed according to the pressure applied to the cover 100, 1 electrode 410 and can detect the touch pressure.

The control unit 13 applies the touch position drive signal to the third electrode 430 in the first time period by time-dividing the time for applying the driving signal to the third electrode 430, The driving unit 12 may be controlled to apply the touch pressure driving signal to the third electrode 430 during the time period. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval, and receives the touch pressure sensing signal from the first electrode 410 in the second time interval. 11 can be controlled.

At this time, the controller 13 can control the second electrode 420 to have a floating or high impedance in a second time period. The mutual capacitance between the first electrode 410 and the third electrode 430 can be more easily sensed when the second electrode 420 is floating or high impedance in the second time period.

The controller 13 controls the driving unit 12 to apply the touch position driving signal and the touch pressure driving signal to the third electrode 430 at the same time without time-sharing the time for applying the driving signal to the third electrode 430 have. In this case, the sensing unit 11 may receive the touch position sensing signal from the second electrode 420 and simultaneously receive the touch pressure sensing signal from the first electrode 410.

At this time, the controller 13 can control the second electrode 420 to have a high impedance. When the second electrode 420 has a high impedance, the mutual capacitance between the first electrode 410 and the third electrode 430 can be more easily sensed.

Alternatively, the second electrode 420 may be configured not to cover the entire top surface of the display module 200. The mutual electrostatic capacitance between the first electrode 410 and the third electrode 430 can be more easily detected when the second electrode 420 is configured not to cover the entire upper surface of the display module 200.

Example 12

6B, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the third electrode 430, applies a touch pressure driving signal to the first electrode 410, The sensing unit 11 may receive the touch position sensing signal and the touch pressure sensing signal from the second electrode 420.

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. At this time, the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 changes according to a change in distance between the first electrode 410 and the second electrode 420. The sensing unit 11 senses a touch pressure sensing signal including information on the mutual electrostatic capacitance between the first electrode 410 and the second electrode 420 that changes according to the pressure applied to the cover 100. That is, Electrode 420 to detect the touch pressure.

The controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval and receives the touch position sensing signal from the second electrode 420 in the second time period different from the first time interval, The sensing unit 11 may be controlled to receive the touch pressure sensing signal from the second electrode 420 during the time interval. In this case, the controller 13 applies the touch position drive signal to the third electrode 430 in the first time interval and applies the touch pressure drive signal to the first electrode 410 in the second time interval. Can be controlled.

At this time, the controller 13 can control the first electrode 410 to have a high impedance. When the first electrode 410 has a high impedance, the mutual capacitance between the second electrode 420 and the third electrode 430 can be more easily sensed.

Alternatively, the first electrode 410 may be configured not to cover the entire upper surface of the display module 200. The mutual electrostatic capacitance between the second electrode 420 and the third electrode 430 can be more easily sensed when the first electrode 410 is configured not to cover the entire upper surface of the display module 200.

Thirteenth Operation Example

6A, the driving unit 12 according to the embodiment of the present invention applies the touch position driving signal and the touch pressure driving signal to the third electrode 430, and the sensing unit 11 applies the touch position driving signal and the touch pressure driving signal to the second electrode 420 and receives the touch pressure sensing signal from the third electrode 430. [

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the third electrode 430. When the first electrode 410 serves as a ground (reference potential), the self-capacitance of the third electrode 430 changes according to the distance between the first electrode 410 and the third electrode 430 . Therefore, the sensing unit 11 receives the touch pressure sensing signal including information on the self-capacitance of the third electrode 430, which changes according to the pressure applied to the cover 100, from the third electrode 430 The touch pressure can be detected.

The control unit 13 applies the touch position drive signal to the third electrode 430 in the first time period by time-dividing the time for applying the driving signal to the third electrode 430, A touch pressure driving signal may be applied to the third electrode 430 and the driving unit 12 may be controlled so that the first electrode 410 may serve as a ground. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval and receives the touch pressure sensing signal from the third electrode 430 in the second time interval. 11 can be controlled.

At this time, the controller 13 can control the second electrode 420 to have a floating or high impedance in a second time period. When the second electrode 420 has a floating or high impedance in the second time period, the self-capacitance of the third electrode 430 can be more easily sensed. The first electrode 410 may be configured not to cover the entire upper surface of the display module 200 so that the touch position can be easily detected from the second electrode 420 and the third electrode 430 in the first time period .

Fourteenth Operation Example

6A, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the third electrode 430, applies a touch pressure driving signal to the first electrode 410, The sensing unit 11 may receive the touch position sensing signal from the second electrode 420 and may receive the touch pressure sensing signal from the first electrode 410.

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the third electrode 430. When the third electrode 430 serves as a ground (reference potential), the self-capacitance of the first electrode 410 changes according to the distance between the first electrode 410 and the third electrode 430 . Therefore, the sensing unit 11 receives the touch pressure sensing signal including the information about the self-capacitance of the first electrode 410, which changes according to the pressure applied to the cover 100, from the first electrode 410 The touch pressure can be detected.

The control unit 13 applies the touch position drive signal to the third electrode 430 in the first time period by time-dividing the time for applying the driving signal to the third electrode 430, A touch pressure driving signal may be applied to the first electrode 410 and the driving unit 12 may be controlled so that the third electrode 430 may serve as a ground. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval, and receives the touch pressure sensing signal from the first electrode 410 in the second time interval. 11 can be controlled.

At this time, the controller 13 can control the second electrode 420 to have a floating or high impedance in a second time period. When the second electrode 420 has a floating or high impedance in the second time interval, the self-capacitance of the first electrode 410 can be more easily sensed. The first electrode 410 may be configured not to cover the entire upper surface of the display module 200 so that the touch position can be easily detected from the second electrode 420 and the third electrode 430 in the first time period .

The control unit 13 applies the touch position drive signal to the third electrode 420 without time-sharing the time for applying the drive signal to the third electrode 430, and simultaneously applies the touch pressure drive signal to the first electrode 410 It is possible to control the driving unit 12 to apply the same. In this case, the sensing unit 13 receives the touch position sensing signal from the second electrode 420 and simultaneously receives the touch pressure sensing signal from the first electrode 410. In this case, the third electrode 430 may serve as a reference potential due to the circuit configuration of the sensing unit connected to the third electrode 430. For example, if the circuit configuration to which the third electrode 430 is connected is a node such as Virtual GND of the OP-amp, it can serve as a reference potential.

Example 15

6B, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the third electrode 430, applies a touch pressure driving signal to the second electrode 420, The sensing unit 11 may receive the touch position sensing signal from the second electrode 420 and may receive the touch pressure sensing signal from the second electrode 420.

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. When the first electrode 410 serves as a ground (reference potential), the self-capacitance of the second electrode 420 changes depending on the distance between the first electrode 410 and the second electrode 420 . Therefore, the sensing unit 11 receives the touch pressure sensing signal including the information about the self-capacitance of the second electrode 420, which changes according to the pressure applied to the cover 100, from the second electrode 420 The touch pressure can be detected.

The control unit 13 applies the touch position drive signal to the third electrode 430 in the first time period by time-dividing the time for applying the driving signal to the third electrode 430, A touch pressure driving signal may be applied to the second electrode 420 and the driving unit 12 may be controlled so that the first electrode 410 may serve as a ground. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval and receives the touch pressure sensing signal from the second electrode 420 in the second time interval. 11 can be controlled.

At this time, the first electrode 410 may be configured not to cover the entire upper surface of the display module 200, so that the touch position can be easily detected from the second electrode 420 and the third electrode 430 in the first time period Can be done.

16th operation example

6B, the driving unit 12 according to the embodiment of the present invention applies a touch position driving signal to the third electrode 430, applies a touch pressure driving signal to the first electrode 420, The sensing unit 11 may receive the touch position sensing signal from the second electrode 420 and may receive the touch pressure sensing signal from the first electrode 410.

As shown in FIG. 1A, the sensing unit 11 senses a touch position including information on mutual capacitance between the second electrode 420 and the third electrode 430, which is changed according to a touch to the surface of the cover 100, The touch position can be detected by receiving the sensing signal from the second electrode 420. [

When the pressure is applied to the cover 100, the compression layer 300 is compressed, thereby reducing the distance between the first electrode 410 and the second electrode 420. When the second electrode 420 serves as a ground (reference potential), the self-capacitance of the first electrode 410 changes according to the distance between the first electrode 410 and the second electrode 420 . Therefore, the sensing unit 11 receives the touch pressure sensing signal including the information about the self-capacitance of the first electrode 410, which changes according to the pressure applied to the cover 100, from the first electrode 410 The touch pressure can be detected.

The control unit 13 applies the touch position drive signal to the third electrode 430 in the first time period by time-dividing the time for applying the driving signal to the third electrode 430, A touch pressure driving signal may be applied to the first electrode 410 and the driving unit 12 may be controlled so that the second electrode 420 may serve as a ground. In this case, the controller 13 receives the touch position sensing signal from the second electrode 420 in the first time interval, and receives the touch pressure sensing signal from the first electrode 410 in the second time interval. 11 can be controlled.

At this time, the first electrode 410 may be configured not to cover the entire upper surface of the display module 200, so that the touch position can be easily detected from the second electrode 420 and the third electrode 430 in the first time period Can be done.

The control unit 13 applies the touch position drive signal to the third electrode 420 without time-sharing the time for applying the drive signal to the third electrode 430, and simultaneously applies the touch pressure drive signal to the first electrode 410 It is possible to control the driving unit 12 to apply the same. In this case, the sensing unit 13 receives the touch position sensing signal from the second electrode 420 and simultaneously receives the touch pressure sensing signal from the first electrode 410. At this time, the second electrode 420 can serve as a reference potential by the circuit configuration of the sensing unit connected to the second electrode 420. For example, if the circuit configuration to which the second electrode 420 is connected is a node such as Virtual GND of the OP-amp, it can serve as a reference potential.

Although the eleventh operation example to the sixteenth operation example have been described with reference to FIGS. 6A and 6B in which the LCD panel shown in FIG. 2A is included as the display module 200 in the touch input device shown in FIG. 5A, And the eleventh operation example through the sixteenth operation example are all applicable to the touch input device shown in Figs. 5B and 5C and the touch input device including the AMOLED panel shown in Fig. 2B as the display module 200 .

In the touch input device according to the embodiment of the present invention described above, the first electrode 410, the second electrode 420, and the third electrode 430 may include two electrodes, In the second electrode pair including one electrode pair and two electrodes used for detecting the touch pressure, a compressed layer 300 is formed between two electrodes included in either the first electrode pair or the second electrode pair And the compressed layer 300 is not disposed between the two electrodes included in the other. In this way, either one of the touch position detecting structure and the touch pressure detecting structure detects the mutual capacitance change amount between the electrodes sandwiching the compressed layer that is compressed according to the pressure, and the other is a structure for detecting the mutual capacitance change amount between the electrodes, It is possible to easily distinguish between the capacitance change due to the touch and the capacitance change due to the pressure because the mutual capacitance change amount is detected. Therefore, it is possible to easily separate the capacitance change amount due to the touch and the capacitance change amount due to the pressure from the change amount of the capacitance received by the sensing unit 11, so that the touch pressure can be detected more accurately. 4A or 4B, since the first electrode 410 serves as a reference potential layer in the second time period for detecting the touch pressure, the finger or the conductive Interference by the sieve can be avoided. Therefore, information on the capacitance change amount due to the touch pressure can be obtained, and information on the capacitance change amount due to the touch pressure thus obtained can be obtained by correcting information on the touch position affected by the touch pressure at the time of touch position detection .

In addition, the two electrodes included in the second electrode pair used for detecting the touch pressure are arranged so as to be orthogonal to each other like the first capacitor electrode 510 and the second capacitor electrode 520 shown in FIGS. 9A to 9C Or the electrode used for detecting the touch pressure may be composed of the plurality of electrode cells 530 shown in FIG. 9D, so that a plurality of channels can be configured to increase the precision of pressure detection, and further, ), It is possible to detect multiple pressures.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

10: Touch sensor
11: sensing part 12: driving part
13: control unit 100: cover
200: Display module 300: Compressed layer
410: first electrode 420: second electrode
430: third electrode 510: first capacitor electrode
520: second capacitor electrode 30: electrode cell

Claims (75)

A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the first electrode, receives the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the first electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the first electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the first electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 3. The method of claim 2,
Wherein the driver applies the touch position drive signal to the first electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses,
Touch input device. 5. The method of claim 4,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode at the same time,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 5. The method of claim 4,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information about a mutual capacitance between the first electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 8. The method of claim 7,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the first electrode that changes as the compression layer compresses,
Touch input device. 10. The method of claim 9,
Wherein the driving unit applies the touch position driving signal to the second electrode and simultaneously applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 10. The method of claim 9,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode and a third electrode disposed under the compression layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
The driving unit applies the touch position driving signal to the second electrode, applies the touch pressure driving signal to the third electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the third electrode that changes as the compression layer compresses,
Touch input device. 13. The method of claim 12,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the third electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. 14. The method according to any one of claims 1 to 13,
Wherein the second electrode and the third electrode are formed on an upper surface of the first substrate layer,
Touch input device. 14. The method according to any one of claims 1 to 13,
And a second cover disposed between the compressed layer and the second electrode and the third electrode.
Touch input device. 14. The method according to any one of claims 1 to 13,
And a second cover disposed between the second electrode and the third electrode and the display module.
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the first electrode, receives the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the first electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the first electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the first electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 19. The method of claim 18,
Wherein the driver applies the touch position drive signal to the first electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses,
Touch input device. 21. The method of claim 20,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode at the same time,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 21. The method of claim 20,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information about a mutual capacitance between the first electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 24. The method of claim 23,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the first electrode that changes as the compression layer compresses,
Touch input device. 26. The method of claim 25,
Wherein the driving unit applies the touch position driving signal to the second electrode and simultaneously applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 26. The method of claim 25,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A second electrode and a third electrode disposed under the first cover;
A compression layer disposed under the second electrode and the third electrode;
A first electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
The second electrode and the third electrode are disposed on the first substrate layer,
Wherein one of the touch position sensing signal and the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on a capacitance between the second electrode and the third electrode,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
The driving unit applies the touch position driving signal to the second electrode, applies the touch pressure driving signal to the third electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the third electrode that changes as the compression layer compresses,
Touch input device. 29. The method of claim 28,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the third electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. 30. The method according to any one of claims 17 to 29,
Wherein the first electrode is formed on an upper surface of the first substrate layer,
Touch input device. 30. The method according to any one of claims 17 to 29,
And a second cover disposed between the compressed layer and the second electrode.
Touch input device. 30. The method according to any one of claims 17 to 29,
And a second cover disposed between the first electrode and the display module.
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the first electrode, receives the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the first electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the first electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the first electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the second electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 35. The method of claim 34,
Wherein the driver applies the touch position drive signal to the first electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses. 37. The method of claim 36,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the second electrode at the same time,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 37. The method of claim 36,
Wherein the driver applies the touch position drive signal to the second electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information about a mutual capacitance between the first electrode and the third electrode that changes as the compression layer compresses,
Touch input device. 40. The method of claim 39,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the second electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the first electrode that changes as the compression layer compresses,
Touch input device. 42. The method of claim 41,
Wherein the driving unit applies the touch position driving signal to the second electrode and simultaneously applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 42. The method of claim 41,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
The driving unit applies the touch position driving signal to the second electrode, applies the touch pressure driving signal to the third electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the third electrode that changes as the compression layer compresses,
Touch input device. 45. The method of claim 44,
Wherein the driving unit applies the touch position driving signal to the second electrode in a first time interval and applies the touch pressure driving signal to the third electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the third electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on the self-capacitance of the second electrode or the self-capacitance of the third electrode, which is changed according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses,
Touch input device. 47. The method of claim 46,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode and simultaneously applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 47. The method of claim 46,
Wherein the driver applies the touch position drive signal to the second electrode and the third electrode in a first time period and applies the touch pressure drive signal to the second electrode in a second time period different from the first time period And,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode during the first time interval and receives the touch pressure sensing signal from the first electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode, applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode, receives the touch pressure sensing signal from the second electrode,
Wherein the touch position sensing signal includes information on the self-capacitance of the second electrode or the self-capacitance of the third electrode, which is changed according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses,
Touch input device. 50. The method of claim 49,
Wherein the driver applies the touch position drive signal to the second electrode and the third electrode in a first time period and applies the touch pressure drive signal to the first electrode in a second time period different from the first time period And,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode during the first time interval and receives the touch pressure sensing signal from the second electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode, applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on the self-capacitance of the second electrode or the self-capacitance of the third electrode, which is changed according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the first electrode that changes as the compression layer compresses,
Touch input device. 52. The method of claim 51,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode and simultaneously applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 52. The method of claim 51,
Wherein the driver applies the touch position drive signal to the second electrode and the third electrode in a first time period and applies the touch pressure drive signal to the first electrode in a second time period different from the first time period And,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode during the first time interval and receives the touch pressure sensing signal from the first electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A display module disposed below the compression layer;
A second electrode and a third electrode disposed in the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the second electrode and the third electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode, receives the touch pressure sensing signal from the second electrode,
Wherein the touch position sensing signal includes information on the self-capacitance of the second electrode or the self-capacitance of the third electrode, which is changed according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the second electrode that changes as the compression layer compresses,
Touch input device. 55. The method of claim 54,
Wherein the driver applies the touch position drive signal to the second electrode and the third electrode in a first time period and applies the touch pressure drive signal to the second electrode in a second time period different from the first time period And,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and the third electrode during the first time interval and receives the touch pressure sensing signal from the second electrode during the second time interval,
Touch input device. 61. The method according to any one of claims 33 to 55,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode and the third electrode are formed on the upper surface of the second substrate layer,
Touch input device. 61. The method according to any one of claims 33 to 55,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode and the third electrode are formed on a lower surface of the first substrate layer,
Touch input device. 61. The method according to any one of claims 33 to 55,
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein one of the second electrode and the third electrode is formed on an upper surface of the second substrate layer and the other is formed on a lower surface of the first substrate layer,
Touch input device. 61. The method according to any one of claims 33 to 55,
And a second cover disposed between the compression layer and the display module.
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A third electrode disposed within the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode is disposed on the first substrate layer,
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal and the touch pressure driving signal to the third electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the third electrode that changes as the compression layer compresses. 64. The method of claim 60,
Wherein the driver applies the touch position drive signal and the touch pressure drive signal to the third electrode at the same time,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 64. The method of claim 60,
Wherein the driver applies the touch position drive signal to the third electrode in a first time interval and applies the touch pressure drive signal to the third electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the second electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A third electrode disposed within the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode is disposed on the first substrate layer,
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the third electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal and the touch pressure sensing signal from the second electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a mutual capacitance between the first electrode and the second electrode that changes as the compression layer compresses,
Touch input device. 64. The method of claim 63,
Wherein the driving unit applies the touch position driving signal to the third electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the second electrode during the first time interval and receives the touch pressure sensing signal from the second electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A third electrode disposed within the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode is disposed on the first substrate layer,
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal and the touch pressure driving signal to the third electrode,
The sensing unit receives the touch position sensing signal from the second electrode, receives the touch pressure sensing signal from the third electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the third electrode that changes as the compression layer compresses,
Touch input device. 66. The method of claim 65,
Wherein the driver applies the touch position drive signal to the third electrode in a first time interval and applies the touch pressure drive signal to the third electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the second electrode during the first time interval and receives the touch pressure sensing signal from the third electrode during the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A third electrode disposed within the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode is disposed on the first substrate layer,
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driver applies the touch position drive signal to the third electrode, applies the touch pressure drive signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode, receives the touch pressure sensing signal from the first electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the first electrode that changes as the compression layer compresses,
Touch input device. 68. The method of claim 67,
Wherein the driving unit applies the touch position driving signal to the third electrode and simultaneously applies the touch pressure driving signal to the first electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode and receives the touch pressure sensing signal from the first electrode,
Touch input device. 68. The method of claim 67,
Wherein the driving unit applies the touch position driving signal to the third electrode in a first time interval and applies the touch pressure driving signal to the first electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the second electrode in the first time interval and receives the touch pressure sensing signal from the first electrode in the second time interval,
Touch input device. A first cover;
A first electrode disposed under the first cover;
A compression layer disposed under the first electrode;
A second electrode disposed under the compressed layer;
A display module disposed below the compression layer;
A third electrode disposed within the display module;
A driver for applying a touch position drive signal and a touch pressure drive signal;
And a sensing unit for receiving the touch position sensing signal and the touch pressure sensing signal
Wherein the display module comprises a first substrate layer and a second substrate layer disposed below the first substrate layer,
Wherein the second electrode is disposed on the first substrate layer,
Wherein the touch pressure sensing signal is based on a capacitance between the first electrode and the second electrode or a capacitance between the first electrode and the third electrode, Based on the capacitance between the three electrodes,
Detects a touch position based on the touch position sensing signal,
Detecting a touch pressure based on the touch pressure sensing signal,
Wherein the driving unit applies the touch position driving signal to the third electrode, applies the touch pressure driving signal to the second electrode,
Wherein the sensing unit receives the touch position sensing signal from the second electrode, receives the touch pressure sensing signal from the second electrode,
Wherein the touch position sensing signal includes information on mutual capacitance between the second electrode and the third electrode that changes according to a touch to the first cover surface,
Wherein the touch pressure sensing signal includes information on a self-capacitance of the second electrode that changes as the compression layer compresses,
Touch input device. 71. The method of claim 70,
Wherein the driver applies the touch position drive signal to the third electrode in a first time interval and applies the touch pressure drive signal to the second electrode in a second time interval different from the first time interval,
Wherein the sensing unit receives the touch position sensing signal from the second electrode during the first time interval and receives the touch pressure sensing signal from the second electrode during the second time interval,
Touch input device. 72. The method according to any one of claims 60 to 71,
The second electrode is formed on the upper surface of the first substrate layer,
And the third electrode is formed on the upper surface of the second substrate layer,
Touch input device. 72. The method according to any one of claims 60 to 71,
The second electrode is formed on the upper surface of the first substrate layer,
Wherein the third electrode is formed on a lower surface of the first substrate layer,
Touch input device. 72. The method according to any one of claims 60 to 71,
And a second cover disposed between the compressed layer and the second electrode.
Touch input device. 72. The method according to any one of claims 60 to 71,
Further comprising a second cover disposed between the second electrode and the display module,
Touch input device.

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