KR20150121454A - Touch panel and touch device - Google Patents

Abstract

A touch panel according to an embodiment includes a substrate; A sensing electrode disposed on the substrate and sensing a position; A first wiring electrically connected to the sensing electrode; And a second wiring extending from an upper surface to a side surface of the substrate.
A touch device according to an embodiment includes: a touch panel that recognizes a first touch; And a set cover for supporting the touch panel and recognizing a second touch.

Description

TOUCH PANEL AND TOUCH DEVICE COMPRISING THE SAME [Technical Field]

Embodiments relate to a touch panel and a touch device including the touch panel.

2. Description of the Related Art In recent years, a touch panel has been applied to an image displayed on a display device in various electronic products by a method of touching an input device such as a finger or a stylus.

Electrostatic capacitance type and resistance film type are representative methods of sensing such a touch position. The resistance film type touch panel senses that the resistance changes according to the connection between the electrodes when the pressure is applied to the input device, and the position is detected. A capacitance type touch panel senses a change in electrostatic capacitance between electrodes when a finger touches them, thereby detecting the position. Considering the convenience of the manufacturing method and the sensing power, recently, in a small model, the electrostatic capacity method has attracted attention.

On the other hand, attempts have been made to diversify the user experience by implementing the touch of the side as well as the screen area of the touch panel.

Embodiments can provide a touch panel that can expand a user's experience and a touch device including the touch panel.

A touch panel according to an embodiment includes a substrate; A sensing electrode disposed on the substrate and sensing a position; A first wiring electrically connected to the sensing electrode; And a second wiring extending from an upper surface to a side surface of the substrate.

A touch device according to an embodiment includes: a touch panel that recognizes a first touch; And a set cover for supporting the touch panel and recognizing a second touch.

In the embodiment, a simple touch can be recognized on the side of the touch device. That is, touch can be implemented not only on the effective area of the touch device but also on the side surface. For example, the side of the touch device can recognize the position in the vertical direction. Therefore, it is possible to recognize the volume of the sound, the enlargement, reduction, or vertical movement of the screen. In addition, when the user holds the touch device, the user can perform functions such as turning the screen on and off. This allows the user experience to be expanded. In addition, the button provided on the side of the touch device can be omitted.

1 is a perspective view of a touch panel according to an embodiment.
2 is a top view of the touch panel according to the embodiment.
3 is a cross-sectional view showing a section cut along the line I-I 'in Fig.
4 is a cross-sectional view of a touch device according to an embodiment.
5 is a perspective view of a touch panel according to another embodiment.
6 is a perspective view of a touch device according to an embodiment.

In the description of the embodiments, it is to be understood that each layer (film), area, pattern or structure may be referred to as being "on" or "under / under" Quot; includes all that is formed directly or through another layer. The criteria for top / bottom or bottom / bottom of each layer are described with reference to the drawings.

The thickness or the size of each layer (film), region, pattern or structure in the drawings may be modified for clarity and convenience of explanation, and thus does not entirely reflect the actual size.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the touch panel according to the embodiment may include a substrate 100, a sensing electrode 200, a first wiring 300, a ground electrode 600, and a printed circuit board 700 have.

The substrate 100 may include an effective area AA through which light is transmitted and an ineffective area UA disposed outside the effective area AA and not transmitting light. In more detail, the valid area AA refers to an area where a user can input a touch command. The non-valid area UA is a concept opposite to the valid area AA, and is not activated even when a user touches the area Which means that the touch command input is not performed

The substrate 100 may comprise glass or plastic. For example, the substrate 100 may comprise tempered glass, semi-tempered glass, soda lime glass, reinforced plastic or soft plastic.

The print layer 500, the sensing electrode 200, and the first wiring 300 may be disposed on one side of the substrate 100.

The print layer 500 and the first wiring 300 may be disposed on the ineffective area UA and the sensing electrode 200 may be disposed on the effective area AA.

The sensing electrodes 200 may be disposed on the substrate 100. In detail, the sensing electrodes 200 may be disposed on the effective area AA of the substrate 100. The sensing electrode 200 includes a driving electrode for transmitting a signal and a receiving electrode for receiving a signal, but is collectively referred to as a sensing electrode for sensing a touch position by combining a driving electrode and a receiving electrode.

The sensing electrode 200 may include a conductive material. In detail, the sensing electrode 200 may include a transparent conductive material. For example, the sensing electrode 200 may be formed of indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, And a metal oxide such as titanium oxide. In addition, the sensing electrode 200 may include a nanowire, a photosensitive nanowire film, a carbon nanotube (CNT), a graphene, a conductive polymer, or various metals. For example, the sensing electrode 200 may be formed of Cr, Ni, Cu, Al, Ag, Mol, or an alloy thereof. When the sensing electrode 200 includes a metal, the sensing electrode 200 may include a mesh shape so as not to be visible even in the effective area AA.

The sensing electrode 200 may include a first sensing electrode 210, a second sensing electrode 220, and a bridge electrode 230. The first sensing electrode 210, the second sensing electrode 220, and the bridge electrode 230 may include the same material or may include different materials. The first sensing electrode 210, the second sensing electrode 220, and the bridge electrode 230 may be disposed on the same side of the substrate 100.

The bridge electrode 230 may be disposed in the form of a bar, for example. In detail, the bridge electrodes 230 may be arranged in a bar shape spaced apart at regular intervals on the effective area AA. The bridge electrode 230 may serve to connect the second sensing electrode 220 to be described later.

An insulating layer may be disposed on the bridge electrode 230. In detail, an insulating layer may be partially disposed on the bridge electrode 230, and a portion of the bridge electrode 230 may be covered by the insulating layer. For example, when the bridge electrode 230 is formed in a bar shape, an insulating layer may be disposed on a region except one end and the other end, that is, both end portions of the bridge electrode 230.

The first sensing electrode 210 and the second sensing electrode 220 may be disposed on the effective area AA to sense a touch. in details. The first sensing electrode 210 may extend in one direction on the effective region AA and the second sensing electrode 220 may extend in a direction different from the first direction.

One of the first sensing electrode 210 and the second sensing electrode 220 may be disposed on the insulating layer and the other sensing electrode may be connected to both ends of the bridge electrode 230. Accordingly, the first sensing electrode 210 and the second sensing electrode 220 may be electrically connected to each other without being short-circuited by the bridge electrode and the insulating material.

In the above description, the bridge electrode, the insulating material, and the sensing electrode are stacked in this order. However, the embodiment is not limited thereto, and the sensing electrode, the insulating material, and the bridge electrode may be stacked in this order.

In the above description, the first sensing electrode 210 and the second sensing electrode 220 are disposed on the same substrate 100. However, the present invention is not limited to this, 210 and the second sensing electrode 220 may be disposed on different substrates.

A printing layer 500 is disposed in the non-effective area UA. The print layer 500 may extend along the edge of the substrate 100. The printing layer 500 may be formed through 1-degree printing, 2-degree printing, or 3-degree or more printing. The print layer 500 may be formed by applying black ink or white ink according to a desired appearance. The print layer 500 serves to prevent the first wires 300 and the like described later from being seen from the outside. In addition, a pattern or the like may be formed on the print layer 500 to implement a desired logo or the like.

A first wiring 300 electrically connecting the sensing electrode 200 may be formed in the non-effective region UA. One end of the first wiring 300 may be connected to the sensing electrode 200 and the other end may be connected to the printed circuit board 700. In detail, the first wiring 300 is connected to the sensing electrode 200 and is drawn to the upper or lower end of the substrate 100. The first pad portion 800 may be disposed at the other end of the first wiring 300 and may be connected to the printed circuit board 700.

In detail, the first wiring 300 connects a touch signal sensed by the first sensing electrode 210 and the second sensing electrode 220 to the printed circuit board 700 on which the driving chip 710 is mounted The touch operation can be performed. The printed circuit board 700 may be, for example, a flexible printed circuit board (FPCB).

A ground electrode 600 is disposed adjacent to the first wiring 300. The width of the ground electrode 600 may be greater than the width of the first wiring 300. The ground electrode 600 serves to prevent static electricity or ESD in the touch panel. That is, static electricity or ESD moves along the path of the ground electrode 600, so that it can not be introduced into the touch panel. Since the ground electrode 600 is disposed along the rim of the substrate 100, static electricity or ESD flowing into the touch panel can be effectively blocked. The ground electrode 600 may be disposed along the entire rim of the substrate 100. The ground electrode 600 may be connected to the printed circuit board 700 to emit ESD in the touch panel as an electrical signal. This can prevent signal interference and improve the accuracy and reliability of the touch.

The ground electrode 600 may include the same or similar material as the first wiring 300.

One end of the ground electrode 600 may be connected to the printed circuit board 700. In detail, the ground electrode 600 is drawn to the top or bottom of the substrate 100. The second pad unit 900 may be disposed at one end of the ground electrode 600 and connected to the printed circuit board 700.

On the other hand, a command icon 400 may be disposed at the lower end of the ineffective area UA. And is configured to illuminate the command icon 400 with an LED from the rear of the command icon 400 so that the user can easily identify the command icon 400 and input a command. At this time, the ground electrode 600 may be disposed by bypassing the command icon 400. That is, the ground electrode 600 may be disposed surrounding the command icon 400. The ground electrode 600 may be disposed along the command icon 400. Therefore, when the user inputs a command through the command icon 400, noise can be prevented from occurring and the accuracy of command input can be improved.

 The substrate 100 may further include a second wiring 350 extending from an upper surface 100a to a side surface 100b. That is, the second wiring 350 may be disposed on the side surface 100b of the substrate 100. [ The second wiring 350 may include a conductive material. For example, the second wiring 350 may include a conductive epoxy or a conductive tape.

A third pad portion 950 may be disposed at an end of the second wiring 350. The second wiring 350 may be connected to the printed circuit board 700 through the third pad portion 950. The second wiring 350 may apply an electrical signal to the set cover for side touch of a touch device to be described later.

Hereinafter, the touch device according to the embodiment will be described in detail with reference to FIGS. 4 and 6. FIG. For the sake of clarity and conciseness, the same or similar parts as those described above will not be described in detail.

The touch device according to the embodiment may include the touch panel, the set cover 100, the display panel 10, and the main board 20 described above.

The touch panel can be accommodated in the set cover 1000. Specifically, the display panel 10 may be disposed under the touch panel, and the first set cover 1001 may be disposed between the display panel 10 and the touch panel. The first set cover 1001 may support the touch panel.

The first set cover 1001 may include a conductive material. For example, the first set cover 1001 may include a metal.

The first set cover 1001 may be in contact with a side surface of the touch panel. Specifically, the touch panel may include a second wiring 350, and the second wiring 350 may contact the first set cover 1001.

Here, referring to FIG. 6, the touch panel can recognize the first touch T1. The touch panel may sense a position in a mutual capacitance manner. That is, in the touch panel, a difference occurs in a portion where the capacitance formed between the first sensing electrode 210 and the second sensing electrode 220 is contacted by the input device, Can be detected.

On the other hand, the first set cover can recognize the second touch (T2). That is, the touch can be implemented not only on the effective area AA of the touch device but also on the side surface. The second touch T2 may be recognized in a different manner from the first touch T1. That is, the first set cover 1001 can sense a touch in a self-capacitance manner. Since the first set cover and the second wiring 350 are connected to each other, the first set cover itself can serve as an electrode. Therefore, the touch can be recognized by detecting the amount of change in the capacitance formed between the first set cover and the input device.

Therefore, the first set cover can recognize a simple touch. For example, the first set cover can recognize only the vertical position. Therefore, it is possible to recognize the volume of the sound, the enlargement, reduction, or vertical movement of the screen. In addition, when the user holds the touch device, the user can perform functions such as turning the screen on and off. This allows the user experience to be expanded. In addition, the button provided on the side of the touch device can be omitted.

Meanwhile, when the touch device is not moved for a predetermined period by using a motion sensor in the software of the touch device, the touch is recognized and turned on when the user holds the touch device. It is possible to control not to recognize the touch. Therefore, it is possible to prevent the side touch from being always performed when the touch device is held.

A film (30) with a set cover may be disposed between the touch panel and the display panel (10). Therefore, the touch panel and the display panel 10 can be stably stuck together.

Meanwhile, a second set cover 1002 coupled to the first set cover 1001 may be further disposed. The second set cover 1002 can support the display panel 10.

Meanwhile, the main board 20 may be disposed under the display panel 10. The main board 20 may drive the display panel 10. Specifically, the main board 20 can set the execution environment of the display device and exchange data input / output. The main board 20 may include components such as a CPU, a microprocessor, a coprocessor, a memory, a BIOS, and a connection circuit.

Meanwhile, a third set cover 1003 coupled to the second set cover 1002 may be further disposed. The third set cover 1003 can support the main board 20.

The set cover 1000 may be formed in a rectangular shape. The second set cover 1002 and the third set cover 1003 may include plastic or metal.

Referring to FIG. 5, the side surface 100b of the substrate 100 of the touch panel according to the embodiment may be defined as a touch area TA and a non-touch area NTA. The touch area TA is an area capable of recognizing a touch, and the non-touch area NTA is an area in which a touch can not be recognized. In the touch region TA, the second wiring 350 may be disposed.

A first set cover 1001 for supporting the touch panel is further disposed, and the first set cover 1001 may be defined as a touch area TA and a non-touch area NTA. The touch area TA of the first set cover 1001 may correspond to the touch area TA of the side surface 100b of the substrate 100. [ The touch region TA of the first set cover 1001 may include a conductive material. For example, the touch area TA of the first set cover 1001 may include a metal. Therefore, when the touch area TA of the first set cover 1001 contacts the side surface 100b of the substrate 100, an electrical signal can be recognized through the second wiring 350. [ Therefore, the touch area TA of the first set cover 1001 can serve as an electrode.

In the touch area TA, a touch can be sensed by a self capacitance method. Accordingly, the touch can be sensed by recognizing the distance between the touch point and the second wiring 350.

In contrast, the non-touch area NTA of the first set cover 1001 may include a material different from the touch area TA. Specifically, the non-touch area TA of the first set cover 1001 may include a non-conductive material. For example, the non-touch area TA of the first set cover 1001 may include a resin or the like. Accordingly, the touch can not be recognized through the non-touch area NTA of the first set cover 1001 and the touch can be prevented from being misrecognized when the user grasps or holds the touch device by using the touch device .

Although FIG. 6 shows an example of a touch device, it is obvious that the above-described touch device can be used in various electronic products such as a notebook, a home appliance, and the like, to which a touch panel can be applied, in addition to a mobile terminal. Also, CID (Center Information Display) can be implemented not only in PND (Personal Navigation Display) such as car navigation, but also in dashboard and the like.

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

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 construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Claims (15)

Board;
A sensing electrode disposed on the substrate and sensing a position;
A first wiring electrically connected to the sensing electrode; And
A touch panel including a second wiring extending from an upper surface to a side surface of the substrate; The method according to claim 1,
Wherein the second wiring comprises a conductive epoxy or a conductive tape. The method according to claim 1,
Wherein a side surface of the substrate includes a touch region and a non-touch region,
And the second wiring is disposed in the touch region. A touch panel for recognizing a first touch; And
And a set cover for supporting the touch panel and recognizing a second touch. 5. The method of claim 4,
And the set cover and the touch panel are electrically connected to each other. 5. The method of claim 4,
The touch panel
Board;
A sensing electrode disposed on the substrate and sensing a position;
A first wiring electrically connected to the sensing electrode; And
And a second wiring extending from the top surface to the side surface of the substrate. The method according to claim 6,
And the second wiring is in contact with the set cover. The method according to claim 6,
Wherein the second wiring comprises a conductive epoxy or a conductive tape. The method according to claim 6,
And the first wiring and the second wiring are connected to the printed circuit board. 5. The method of claim 4,
Wherein the first touch and the second touch are recognized in different ways.
5. The method of claim 4,
Wherein the set cover comprises a conductive material. 12. The method of claim 11,
Wherein the set cover comprises a metal. 5. The method of claim 4,
Wherein the set cover is defined as a touch area and a non-touch area. 14. The method of claim 13,
Wherein the touch region of the set cover comprises a conductive material. 14. The method of claim 13,
Wherein the non-touch region of the set cover comprises a nonconductive material.

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