CN119311156A - Capacitive touch panel and electronic device - Google Patents
Capacitive touch panel and electronic device Download PDFInfo
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- CN119311156A CN119311156A CN202411824051.6A CN202411824051A CN119311156A CN 119311156 A CN119311156 A CN 119311156A CN 202411824051 A CN202411824051 A CN 202411824051A CN 119311156 A CN119311156 A CN 119311156A
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- electrode plate
- circuit board
- touch panel
- capacitive touch
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
本申请实施例涉及触摸板技术领域，公开了一种电容式触摸板及电子设备，本申请的电容式触摸板包括：第一电路板、第二电路板、支架、电容组件；第一电路板的第一表面上设置有所述支架，支架在远离第一表面的方向上设置有第二电路板；第二电路板朝向支架的第二表面与第一表面相对设置；电容组件包括导体板、与导体板相对设置的电极板；导体板设置在第一表面上，电极板设置在第二表面上；电极板包括第一极板、围绕第一极板的边沿设置的第一隔离板、围绕第一隔离板远离第一极板的边沿设置的第二极板；第一极板、第二极板均与第二电路板电连接；从而提高了触摸板的压力检测的准确度。
The embodiments of the present application relate to the technical field of touch panels, and disclose a capacitive touch panel and an electronic device. The capacitive touch panel of the present application comprises: a first circuit board, a second circuit board, a bracket, and a capacitor assembly; the bracket is arranged on the first surface of the first circuit board, and the bracket is arranged on the second circuit board in a direction away from the first surface; the second circuit board is arranged opposite to the first surface facing the second surface of the bracket; the capacitor assembly comprises a conductor plate and an electrode plate arranged opposite to the conductor plate; the conductor plate is arranged on the first surface, and the electrode plate is arranged on the second surface; the electrode plate comprises a first electrode plate, a first isolation plate arranged around the edge of the first electrode plate, and a second electrode plate arranged around the first isolation plate away from the edge of the first electrode plate; the first electrode plate and the second electrode plate are both electrically connected to the second circuit board; thereby improving the accuracy of pressure detection of the touch panel.
Description
Technical Field
The embodiment of the application relates to the technical field of touch panels, in particular to a capacitive touch panel and electronic equipment.
Background
Currently, touch pads are widely used in consumer electronics, such as notebook computers, game pads, and the like. In order to increase the performance of the touch pad and meet the requirements of users on the touch pad, a pressure sensor is added in the touch pad in the related art to detect the pressing pressure of the touch pad, so that different operations are realized according to different pressures. The pressure detection scheme of the existing touch pad comprises, but is not limited to, a capacitance scheme, a strain gauge scheme, a pressure film scheme and the like, and the strain gauge scheme and the pressure film scheme are easily influenced by environment and temperature to cause poor detection effect, and the defects of complex structure, high cost and the like generally exist. Compared with a strain gauge scheme and a pressure film scheme, the capacitive detection scheme has the advantages of higher accuracy and lower cost, and is widely applied.
In the related art, a capacitor is formed by two polar plates and a conductor plate in a capacitor scheme, when the surface of the touch plate is pressed, the distance between the two polar plates and the conductor plate is changed, so that the detected capacitor is changed, and the pressure born by the touch plate can be calculated by detecting the change of the capacitor. However, the accuracy of pressure detection of the current capacitive touch pad is still not.
Disclosure of Invention
The embodiment of the application aims to provide a capacitive touch panel and electronic equipment, so that the accuracy of pressure detection of the touch panel is improved.
The embodiment of the application provides a capacitive touch panel which comprises a first circuit board, a second circuit board, a support and a capacitive component, wherein the support is arranged on the first surface of the first circuit board, the support is provided with a second circuit board in the direction away from the first surface, the second surface of the second circuit board is opposite to the first surface, the second surface is the surface of the second circuit board facing the support, the capacitive component comprises a conductor plate and an electrode plate opposite to the conductor plate, the conductor plate is arranged on the first surface, the electrode plate is arranged on the second surface, the electrode plate comprises a first electrode plate, a first isolation plate arranged around the edge of the first electrode plate and a second electrode plate arranged around the edge of the first isolation plate away from the first electrode plate, and the first electrode plate and the second electrode plate are electrically connected with the second circuit board.
The embodiment of the application also provides electronic equipment, which comprises the capacitive touch pad.
In some embodiments, the first plate is a receiving plate and the second plate is an transmitting plate.
In some embodiments, the electrode plate further comprises a grounding plate and a second isolation plate, wherein the grounding plate is arranged around the edge of the first isolation plate away from the first electrode plate, the second isolation plate is arranged around the edge of the grounding plate away from the first isolation plate, and the second electrode plate is arranged around the edge of the second isolation plate away from the grounding plate.
In some embodiments, the surface of the electrode plate, which is far away from the second surface direction, is in any one of regular quadrangle, regular hexagon, regular octagon and round shape.
In some embodiments, the capacitive touch pad further includes a cover plate disposed on a surface of the second circuit board remote from the support.
In some embodiments, the support is of a cuboid structure with a hollow area, the conductor plate is positioned inside the hollow area, and the electrode plate is positioned inside the hollow area.
In some embodiments, the bracket comprises a bracket body and N cantilever beams extending from the bracket body towards the direction of the hollow area, wherein N is a natural number greater than 0, the second circuit board is connected with the suspension ends of the N cantilever beams of the bracket, the first circuit board is provided with N limiting holes in one-to-one correspondence with the N cantilever beams, and the cantilever beams are used for entering the limiting holes under the condition that the second circuit board is pressed.
In some embodiments, a resilient member is disposed between the second circuit board and each of the cantilever beams.
In some embodiments, the projection of the electrode plate onto the first circuit board is located within the projection of the conductor plate onto the first circuit board in a direction perpendicular to the first surface of the first circuit board.
The technical scheme provided by the embodiment of the application has at least the following advantages:
The electrode plate of this embodiment includes first polar plate, around the first division board of the border setting of first polar plate, around the second polar plate of the border setting of first division board keeping away from first polar plate for first polar plate, second polar plate are nested structure, when the user presses the different regions of touch panel, and the equivalent distance variation between first polar plate, second polar plate and the conductor board is roughly the same, and the variation of electric capacity is also roughly the same, has improved the accuracy of touch panel's pressure detection. And be provided with first division board between first polar plate and the second polar plate for keep apart each other between first polar plate and the second polar plate, thereby guarantee the accuracy that capacitance signal obtained, further improve the accuracy that the pressure of touch panel detected.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
FIG. 1A is a schematic diagram of a cross section of a capacitive touch pad of the related art;
FIG. 1B is a schematic plan view of two pole plates on a circuit board in the related art;
FIG. 2A is a schematic diagram of an exploded structure of a capacitive touch pad according to an embodiment of the application;
FIG. 2B is a schematic diagram of a cross section of a capacitive touch pad according to one embodiment of the application;
FIG. 2C is a schematic plan view of an electrode plate of a capacitive touch pad on a second circuit board according to an embodiment of the application;
FIG. 3 is a cross-sectional view between an electrode plate and a conductor plate of a capacitive touch panel according to an embodiment of the application;
FIG. 4A is a schematic view of a planar structure of an electrode plate according to an embodiment of the present application;
FIG. 4B is a schematic view of a planar structure of an electrode plate according to an embodiment of the present application;
FIG. 4C is a schematic view of a planar structure of an electrode plate according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an exploded structure of a capacitive touch pad according to an embodiment of the application;
fig. 6 is a schematic plan view of an electrode plate of a capacitive touch panel according to an embodiment of the present application.
Detailed Description
As known from the background art, the accuracy of pressure detection of the current capacitive touch pad is poor. As shown in fig. 1A, which is a schematic diagram of a cross section of a capacitive touch panel in the related art, the capacitive touch panel includes an upper circuit board 101, a lower circuit board 102, a transmitting electrode plate 103, a receiving electrode plate 104, a metal plate 105 and a bracket 106, where the transmitting electrode plate 103, the receiving electrode plate 104 and the metal plate 105 form a capacitance, when the surface of the touch panel is pressed, the transmitting electrode plate 103, the receiving electrode plate 104 move downward, and the distance between the transmitting electrode plate 103, the receiving electrode plate 104 and the metal plate 105 changes, so that the detected capacitance changes, and the pressure applied to the touch panel can be measured by detecting the change of the capacitance.
It was found through analytical studies that when a user performs a pressing operation on different areas of the touch panel, even though the pressing force is the same, the amount of pressing of the touch panel at the pressing point is the same, but the equivalent distance variation amounts between the transmitting electrode plate 103, the receiving electrode plate 104, and the metal plate 105 are different. As shown in fig. 1B, a schematic plan view of two electrode plates on a circuit board is shown, for example, a user presses a point a and a point B with the same force, when pressing the point a, the pressing amount at the point a is x, the pressing amount gradually decreases in the direction away from the point a, when pressing the point B, the pressing amount at the point B is x, the pressing amount gradually decreases in the direction away from the point B, it can be seen that the point a is close to the transmitting electrode plate 103 and the receiving electrode plate 104, when pressing the point a, the transmitting electrode plate 103 and the receiving electrode plate 104 can be driven to generate more displacement downward, and the distance between the point B and the transmitting electrode plate 103 and the receiving electrode plate 104 is far, and when pressing the point B, the downward generated displacement between the transmitting electrode plate 103 and the receiving electrode plate 104 is small, so that under the condition of the same pressing force, the difference of equivalent distance change between the transmitting electrode plate 103, the receiving electrode plate 104 and the metal plate 105 is large, and the difference of the change amount of capacitance is large, so that the accuracy of pressure detection of the touch plate is poor.
In order to solve the problem of poor accuracy of pressure detection in a capacitive scheme of a touch panel in the related art, one embodiment of the application relates to a capacitive touch panel, which comprises a first circuit board, a second circuit board, a support and a capacitive component, wherein the support is arranged on a first surface of the first circuit board, the second circuit board is arranged on the support in a direction away from the first surface, the second surface of the second circuit board is opposite to the first surface, the second surface is a surface of the second circuit board facing the support, the capacitive component comprises a conductor plate and an electrode plate opposite to the conductor plate, the conductor plate is arranged on the first surface, the electrode plate is arranged on the second surface, the electrode plate comprises a first electrode plate, a first isolation plate arranged around the edge of the first electrode plate and a second electrode plate arranged around the edge of the first isolation plate away from the first electrode plate, and the first electrode plate and the second electrode plate are electrically connected with the second circuit board.
According to the capacitive touch panel, the electrode plates are arranged to comprise the first electrode plate, the first isolation plate surrounding the edge of the first electrode plate and the second electrode plate surrounding the edge of the first isolation plate far away from the first electrode plate, namely, the first electrode plate and the second electrode plate are of a nested structure, so that when a user presses different areas of the touch panel, equivalent distance variation amounts among the first electrode plate, the second electrode plate and the conductor plate are approximately the same, the variation amounts of capacitance are also approximately the same, and the accuracy of pressure detection of the touch panel is improved. And be provided with first division board between first polar plate and the second polar plate for keep apart each other between first polar plate and the second polar plate, thereby guarantee the accuracy that capacitance signal obtained, further improve the accuracy that the pressure of touch panel detected.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those of ordinary skill in the art that in various embodiments of the present application, numerous specific details are set forth in order to provide a thorough understanding of the present application. The claimed application may be practiced without these specific details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments can be mutually combined and referred to without contradiction.
Fig. 2A is a schematic diagram of an exploded structure of the capacitive touch pad of the present embodiment, fig. 2B is a schematic diagram of a cross section of the capacitive touch pad of the present embodiment, and fig. 2C is a schematic plan view of an electrode plate in the capacitive touch pad of the present embodiment on a second circuit board. The capacitive touch pad of this embodiment includes a first circuit board 201, a second circuit board 202, a bracket (not identified in the figure), and a capacitive component (not identified in the figure).
Specifically, a support is disposed on a first surface of the first circuit board 201, a second circuit board 202 is disposed on the support in a direction away from the first surface, the second surface of the second circuit board 202 is opposite to the first surface, the second surface is a surface of the second circuit board 202 facing the support, the capacitor assembly comprises a conductor board 203 and an electrode board 204 disposed opposite to the conductor board 203, the conductor board 203 is disposed on the first surface, the electrode board 204 is disposed on the second surface, the electrode board 204 comprises a first electrode board 2041, a first isolation board 2042 disposed around an edge of the first electrode board 2041, a second electrode board 2043 disposed around an edge of the first isolation board 2042 away from the first electrode board 2041, and the first electrode board 2041 and the second electrode board 2043 are electrically connected to the second circuit board 202.
As shown in fig. 3, which is a cross-sectional view of an electrode plate and a conductor plate in the present embodiment, the electric field line trend between the electrode plate and the conductor plate is shown in fig. 3, in which the first electrode plate 2041 is a receiving electrode plate and the second electrode plate 2043 is a transmitting electrode plate, and the electric field line trend between the first electrode plate 2041, the second electrode plate 2043 and the conductor plate 203 is that the electric field line trend passes through the second electrode plate 2043 to the conductor plate 203 and then to the first electrode plate 2041, so that the first electrode plate 2041 and the second electrode plate 2043 are coupled through the conductor plate 203 to form a capacitor.
In the present embodiment, the first pole plate 2041 and the second pole plate 2043 are of a nested structure, when the user presses different areas of the touch panel, the equivalent distance variation between the first pole plate 2041, the second pole plate 2043 and the conductor plate 203 is approximately the same, the capacitance variation is also approximately the same, and the accuracy of pressure detection of the touch panel is improved. In addition, a first isolation plate 2042 is disposed between the first polar plate 2041 and the second polar plate 2043, so that the first polar plate 2041 and the second polar plate 2043 are isolated from each other, accuracy of capacitance signal acquisition is ensured, and accuracy of pressure detection of the touch panel is further improved.
Specifically, the electrode plate 204 and the second circuit board 202 are integrally formed, and the conductor plate 203 and the first circuit board 201 are integrally formed, so that the volume of the touch panel is saved, the touch panel can be conveniently manufactured and connected with a corresponding circuit board, meanwhile, the electrode plate 204 is arranged in the central area of the second circuit board 202, and the conductor plate 203 is arranged in the central area of the first circuit board 201, thereby being more beneficial to improving the accuracy of touch panel pressure detection.
Specifically, as shown in fig. 2C, when the user presses the point C and the point D with the same force, the pressing amount at the point C is y, the pressing amount gradually decreases in the direction away from the point C, and the pressing amount at the point D is y, the pressing amount gradually decreases in the direction away from the point D, so that, due to the nested structure of the embodiment, when the point C and the point D are pressed, the first electrode plate 2041 and the second electrode plate 2043 with the same area can be driven to displace downward, so that the equivalent distance variation between the first electrode plate 2041, the second electrode plate 2043 and the conductor plate 203 is the same under the condition of the same pressing force, the capacitance variation is the same, and the accuracy of pressure detection of the touch plate is improved.
In practical application, if the touch pad is arranged on the notebook computer, a user can set different operations according to different pressing pressures, such as screen capturing, vibration, volume increasing, volume decreasing, screen brightness increasing, screen brightness darkening and the like, and if the touch pad is arranged on the game handle, different pressing forces of the user on the touch pad can trigger different game skills. Therefore, the above-mentioned nested electrode plate 204 design of the present embodiment can meet the requirement of the user on the higher and higher accuracy of the touch pad pressure detection at the present stage.
In this embodiment, the receiving electrode plate is connected to the processing unit, and the receiving electrode plate is responsible for transmitting the capacitance signal received from the transmitting electrode plate to the processing unit, so the first electrode plate 2041 in this embodiment is the receiving electrode plate, and the second electrode plate 2043 is the transmitting electrode plate, that is, the receiving electrode plate is disposed in the nested structure, so that the receiving electrode plate can effectively isolate the interference of external signals, and the anti-interference capability of the capacitive touch panel is further improved. In other embodiments, the positions of the transmitting plate and the receiving plate may be interchanged, for example, the first plate 2041 is the transmitting plate and the second plate 2043 is the receiving plate.
Specifically, the surface of the electrode plate 204 facing away from the second surface has any one of a regular quadrangle, a regular hexagon, a regular octagon, and a circle. In this embodiment, the surface of the electrode plate 204 in the direction away from the second surface is circular, as shown in fig. 2C, but in practical application, the electrode plate 204 may also have a regular tetragonal structure as shown in fig. 4A, or a regular hexagonal structure as shown in fig. 4B, or a regular octagonal structure as shown in fig. 4C.
It should be noted that, the surface of the electrode plate 204 in the direction away from the second surface may be determined as a third surface, and the accuracy of the touch pad pressure detection is related to the surface area of the third surface of the electrode plate 204, and the greater the surface area of the third surface, the higher the accuracy of the touch pad pressure detection, the smaller the surface area of the third surface, and the lower the accuracy of the touch pad pressure detection. In this embodiment, the surface area of the third surface needs to be set as large as possible, so that the accuracy of the touch panel pressure detection is improved.
Specifically, as shown in fig. 2A, the capacitive touch pad further includes a cover 200, where the cover 200 is disposed on a surface of the second circuit board 202 away from the support. The cover plate 200 is an area where a user touches the touch pad, and the cover plate 200 is arranged on the surface, far away from the bracket, of the second circuit board 202, so that when the user presses the touch pad, the second circuit board 202 drives the electrode plate 204 structure to be pressed, and the capacitance of the capacitance component is changed.
In other embodiments, the cover 200 may be disposed on a surface of the first circuit board 201 away from the support, as shown in fig. 5, and is a schematic structural diagram of a capacitive touch pad, including the first circuit board 201, the second circuit board 202, the support (not shown) and the capacitive component (not shown), where the support is disposed between the first circuit board 201 and the second circuit board 202, the conductor board 203 is disposed on a first surface of the first circuit board 201 near the support, the electrode board 204 is disposed on a second surface of the second circuit board 202 near the support, the first surface and the second surface are opposite, and the structure of the electrode board 204 is the same as that shown in fig. 2C in the above embodiment, and will not be repeated herein. Fig. 5 differs from the above embodiment in that the positions of the conductive plate 203 and the electrode plate 204 are interchanged, that is, when the user presses the cover plate 200 of the touch panel, the first circuit board 201 drives the conductive plate 203 to be pressed, so as to change the capacitance of the capacitive component.
Specifically, as shown in fig. 2A and 5, the support of the present embodiment has a rectangular parallelepiped structure with a hollow region, the conductor plate 203 is located inside the hollow region, the electrode plate 204 is located inside the hollow region, that is, the conductor plate 203 is disposed on a portion of the first surface located in the hollow region, and the electrode plate 204 is disposed on a portion of the second surface located in the hollow region. Wherein the stent comprises a stent body 205 and N cantilever beams 206 extending from the stent body 205 towards the direction of the hollow area, N being a natural number greater than 0.
In one embodiment, as shown in the touch panel of fig. 2A, the second circuit board 202 is connected to the suspension ends of the N cantilever beams 206 of the support, and the first circuit board 201 is provided with N limiting holes 208 corresponding to the N cantilever beams 206 one by one, where the cantilever beams 206 are used to enter the limiting holes 208 when the second circuit board 202 is pressed. In fig. 2A, the number of the cantilever beams 206 is 4, and the cantilever beams 206 are respectively disposed at four vertices of the support, and in practical application, the positions and the number of the cantilever beams 206 are set according to practical needs, which is not limited in this embodiment. Specifically, in the direction perpendicular to the first circuit board 201, the projection of the second circuit board 202 on the first circuit board 201 is located in the hollow area, when the user presses the touch pad, after the surface of the cover board 200 is pressed, the pressure is conducted to the suspended end of the cantilever beam 206 through the second circuit board 202, so that the cantilever beam 206 is bent and deformed, the cover board 200 and the second circuit board 202 move downwards, meanwhile, the cantilever beam 206 is bent and deformed under the action of the pressure so as to enter the corresponding limiting hole 208, at this time, the distance between the electrode board 204 and the conductor board 203 becomes smaller, the capacitance of the capacitance component becomes larger, and the pressure applied to the corresponding touch pad can be determined by detecting the value of the capacitance between the conductor board 203 and the electrode board 204. An elastic member 207 is disposed between the second circuit board 202 and each cantilever beam 206 in this embodiment, and the elastic member 207 may be an elastic structure such as a spring, a silica gel pad, or a sponge, so as to protect the second circuit board 202 and the cantilever beams 206 and improve the stability of the touch panel. It should be noted that, in a direction perpendicular to the first circuit board 201, a projection of the second circuit board 202 onto the first circuit board 201 is located inside the hollow region.
In another embodiment, as shown in the schematic structural diagram of the capacitive touch panel in fig. 5, the first circuit board 201 is connected to the suspension ends of the N cantilever beams 206 of the support, and the second circuit board 202 is provided with N limiting holes 208 corresponding to the N cantilever beams 206 one by one, where the cantilever beams 206 are used to enter the limiting holes 208 when the first circuit board 201 is pressed. Specifically, in the direction perpendicular to the second circuit board 202, the projection of the first circuit board 201 on the second circuit board 202 is located in the hollow area, when the user presses the touch pad, after the surface of the cover board 200 is pressed, the pressure is conducted to the suspended end of the cantilever beam 206 through the first circuit board 201, so that the cantilever beam 206 is bent and deformed, the cover board 200 and the first circuit board 201 move downwards, meanwhile, the cantilever beam 206 is bent and deformed under the action of the pressure so as to enter the corresponding limiting hole 208, at this time, the distance between the electrode board 204 and the conductor board 203 becomes smaller, the capacitance of the capacitance component becomes larger, and the pressure applied to the corresponding touch pad can be determined by detecting the value of the capacitance between the conductor board 203 and the electrode board 204. An elastic member 207 is disposed between the first circuit board 201 and each cantilever beam 206 in this embodiment. The elastic member 207 may be an elastic structure such as a spring, a silica gel pad, or a sponge, so as to protect the first circuit board 201 and the cantilever 206 and improve the stability of the touch pad. It should be noted that, in a direction perpendicular to the second circuit board 202, the projection of the first circuit board 201 onto the second circuit board 202 is located inside the hollow region.
Specifically, in the present embodiment, in the direction perpendicular to the first surface of the first circuit board 201, the projection of the electrode plate 204 onto the first circuit board 201 is located within the projection of the conductor plate 203 onto the first circuit board 201. That is, when viewed from the top view direction, the area of the conductor plate 203 is larger than the area of the electrode plate 204, and the conductor plate 203 covers the electrode plate 204, so that each area of the first electrode plate 2041 and the second electrode plate 2043 in the electrode plate 204 is opposite to the conductor plate 203, thereby, when capacitance detection is performed, the accuracy of detecting capacitance transformation is higher, and the accuracy of pressure detection of the touch panel is improved.
In one embodiment, as shown in fig. 6, a schematic plan view of an electrode plate in the capacitive touch panel of this embodiment is shown. Specifically, the electrode plate 204 includes a first electrode plate 2041, a first separator plate 2042, and a second electrode plate 2043, the electrode plate 204 further includes a ground plate 2044 and a second separator plate 2045 disposed between the first separator plate 2042 and the second electrode plate 2043, the ground plate 2044 is disposed around an edge of the first separator plate 2042 away from the first electrode plate 2041, the second separator plate 2045 is disposed around an edge of the ground plate 2044 away from the first separator plate 2042, and the second electrode plate 2043 is disposed around an edge of the second separator plate 2045 away from the ground plate 2044. In fig. 6, the electrode plate 204 is exemplified by a circle, and the electrode plate 204 may be a regular quadrangle, a regular hexagon, a regular octagon, or the like.
According to the embodiment, the first polar plate 2041, the first isolation plate 2042, the grounding plate 2044, the second isolation plate 2045 and the second polar plate 2043 are sequentially nested, so that the accuracy of pressure detection of the touch panel is improved, the first polar plate 2041 and the second polar plate 2043 are isolated through the first isolation plate 2042, the grounding plate 2044 and the second isolation plate 2045, and the accuracy of capacitance signal acquisition is further improved.
Specifically, the first polar plate 2041 is a receiving polar plate, the second polar plate 2043 is an emitting polar plate, that is, the receiving polar plate is disposed at the innermost part of the nested structure, and then the first isolating plate 2042, the grounding plate 2044 and the second isolating plate 2045 are sequentially disposed, so that the first polar plate 2041 and the second polar plate 2043 are isolated, the grounding plate 2044 can isolate the direct coupling between the first polar plate 2041 and the second polar plate 2043, the receiving polar plate can better isolate the interference of the emitting polar plate and external signals, the proportion of effective signals is improved, and the anti-interference capability of the capacitive touch panel is more advantageously improved. In other embodiments, the positions of the transmitting plate and the receiving plate may be interchanged, for example, the first plate 2041 is the transmitting plate and the second plate 2043 is the receiving plate.
The embodiment of the application also provides electronic equipment, which comprises the capacitive touch pad.
Compared with the related art, the electronic device provided by the embodiment of the present application is provided with the capacitive touch pad provided by the foregoing embodiment, so that the electronic device also has the technical effects provided by the foregoing embodiment, and details thereof are not repeated herein.
The above division of various components is only for clarity of description, and it is within the protection scope of the present embodiment to combine one component or split some components into multiple components in implementation, so long as the same logical relationship is included.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the application and that various changes in form and details may be made therein without departing from the spirit and scope of the application.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411824051.6A CN119311156B (en) | 2024-12-11 | 2024-12-11 | Capacitive touch panel and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411824051.6A CN119311156B (en) | 2024-12-11 | 2024-12-11 | Capacitive touch panel and electronic device |
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| Publication Number | Publication Date |
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| CN119311156A true CN119311156A (en) | 2025-01-14 |
| CN119311156B CN119311156B (en) | 2025-06-03 |
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| CN202411824051.6A Active CN119311156B (en) | 2024-12-11 | 2024-12-11 | Capacitive touch panel and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120521641A (en) * | 2025-07-23 | 2025-08-22 | 鸣芯信息科技(上海)有限公司 | Capacitive encoders, electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782585A (en) * | 2009-12-31 | 2012-11-14 | 迈普尔平版印刷Ip有限公司 | Integrated sensor system |
| KR101565822B1 (en) * | 2015-06-22 | 2015-11-04 | 주식회사 하이딥 | Smartphone |
| CN107239183A (en) * | 2014-12-24 | 2017-10-10 | 深圳市华星光电技术有限公司 | A kind of bendable contact panel |
| CN110554790A (en) * | 2018-06-01 | 2019-12-10 | 光宝科技（常州）有限公司 | touch panel |
| CN216848701U (en) * | 2021-12-31 | 2022-06-28 | 深圳市汇顶科技股份有限公司 | Touch pad and electronic equipment |
| CN217386333U (en) * | 2021-12-31 | 2022-09-06 | 深圳市汇顶科技股份有限公司 | Pressure touch module and electronic equipment |
| CN117348754A (en) * | 2022-07-05 | 2024-01-05 | 原相科技股份有限公司 | Pressure sensing device, 3D gesture control system and vehicle control system |
-
2024
- 2024-12-11 CN CN202411824051.6A patent/CN119311156B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782585A (en) * | 2009-12-31 | 2012-11-14 | 迈普尔平版印刷Ip有限公司 | Integrated sensor system |
| CN107239183A (en) * | 2014-12-24 | 2017-10-10 | 深圳市华星光电技术有限公司 | A kind of bendable contact panel |
| KR101565822B1 (en) * | 2015-06-22 | 2015-11-04 | 주식회사 하이딥 | Smartphone |
| CN110554790A (en) * | 2018-06-01 | 2019-12-10 | 光宝科技（常州）有限公司 | touch panel |
| CN216848701U (en) * | 2021-12-31 | 2022-06-28 | 深圳市汇顶科技股份有限公司 | Touch pad and electronic equipment |
| CN217386333U (en) * | 2021-12-31 | 2022-09-06 | 深圳市汇顶科技股份有限公司 | Pressure touch module and electronic equipment |
| CN117348754A (en) * | 2022-07-05 | 2024-01-05 | 原相科技股份有限公司 | Pressure sensing device, 3D gesture control system and vehicle control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120521641A (en) * | 2025-07-23 | 2025-08-22 | 鸣芯信息科技(上海)有限公司 | Capacitive encoders, electronic equipment |
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