Pressure detection device of touch panel, electronic equipment, detection method and storage medium

Abstract

The invention relates to a pressure detection structure, and discloses a pressure detection device of a touch panel, electronic equipment, a detection method and a storage medium. The pressure detection device of the touch panel comprises a capacitance polar plate arranged on a circuit board and a bracket electrically connected with the circuit board, the support comprises a first conductive part electrically connected with the circuit board and a second conductive part arranged opposite to the capacitor plate, at least part of a projection area of the second conductive part in the direction of the circuit board is overlapped with the capacitor plate, and the distance between the capacitor plate and the second conductive part is changed under the condition that the circuit board moves in the vertical direction; the support further comprises a connecting piece connected with the first conductive piece and the second conductive piece, under the condition that the first conductive piece is stressed to move, the connecting piece moves along with the first conductive piece and drives the second conductive piece to be bent, and under the condition that the bent second conductive piece returns to the second initial position, the connecting piece drives the first conductive piece to return to the first initial position.

Description

Technical Field

[0001] The present invention relates to a pressure detection structure, and in particular to a pressure detection device for a touch panel, an electronic device, a detection method and a storage medium. Background Art

[0002] A touchpad (TouchPad / TrackPad) is an input device widely used in electronic devices. Users can simulate the movement and click operations of a mouse by sliding, clicking or double-clicking their fingers on the touchpad, so it can be used as a substitute for a mouse. In order to enable the touchpad to better sense the operation of the user's fingers, such as different degrees of pressing force, or filter out invalid external touch effects, a pressure sensor can be integrated into the touchpad to determine the pressing force and filter out invalid touches through the change in pressure of the touchpad cover, thereby improving the performance of the touchpad.

[0003] However, the current touch panels with integrated pressure sensors have at least the following problems: the current method of integrating the pressure sensor into the touch panel is to connect the pressure sensor with independent pressure detection function to the original circuit of the touch panel; the pressure sensor integrated into the touch panel and the original touch panel are still two independent modules, and no optimization has been made in terms of the number of parts and cost. In addition, since the pressure sensor is integrated into the interior of the touch panel, the pressure is transmitted to the pressure sensor for detection through the original structure of the touch panel, which affects the accuracy of the pressure detection to a certain extent during the transmission process and affects the sensitivity of the pressure detection. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a pressure detection device, electronic device, detection method and storage medium for a touch panel, which utilizes the original support structure of the touch panel as a part of the detection structure for pressure detection, and forms a capacitive pressure detection structure through a capacitor plate additionally arranged on a circuit board and the support acting as a detection structure, thereby realizing the detection of the pressure of the touch panel, reducing the number of parts of the pressure detection device of the touch panel, reducing the production cost, and improving the sensitivity of pressure detection to a certain extent.

[0005] To solve the above technical problems, an embodiment of the present invention provides a pressure detection device for a touch panel, comprising: a cover plate, a circuit board attached to the cover plate, a capacitor plate arranged on the circuit board, a bracket electrically connected to the circuit board, and a processor; the bracket comprises: a first conductive member electrically connected to the circuit board, and a second conductive member arranged opposite to the capacitor plate, the first conductive member and the second conductive member are respectively in different planes, the second conductive member is spaced apart from the circuit board, and the projection area of ​​the second conductive member in the direction of the circuit board at least partially overlaps with the capacitor plate, and when the circuit board moves in the vertical direction, the capacitor plate The distance between the first conductive member and the second conductive member changes; wherein the vertical direction is a direction perpendicular to the circuit board; the bracket further comprises: a connecting member connecting the first conductive member and the second conductive member, wherein when the first conductive member moves in a vertical direction from a first initial position along with the circuit board, the connecting member moves along with the first conductive member and drives the second conductive member to bend, and when the bent second conductive member returns to the second initial position, the first conductive member is driven to return to the first initial position through the connecting member; the processor is used to receive a capacitance signal generated by the capacitor formed by the capacitor plate and the second conductive member, and determine the magnitude of the pressure according to the capacitance signal.

[0006] An embodiment of the present invention further provides an electronic device, comprising: a housing and the above-mentioned touch panel pressure detection device arranged on the housing.

[0007] An embodiment of the present invention also provides a pressure detection method for a touch panel, which is applied to the pressure detection device of the above-mentioned touch panel, and the method includes: determining a capacitance signal generated by a capacitor formed by a capacitor plate and a second conductive member in the pressure detection device of the touch panel; and determining the pressure exerted on the touch panel based on the capacitance signal and the correspondence between the capacitance signal and the pre-stored capacitance signal and the pressure.

[0008] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above-mentioned touch panel pressure detection method is implemented.

[0009] Compared with the related art, the embodiment of the present invention improves the original bracket in the touch pad, so that the bracket is composed of at least three parts: a first conductive member electrically connected to the circuit board, a second conductive member spaced apart from the circuit board, and a connecting member connecting the first conductive member and the second conductive member. The projection area of ​​the second conductive member toward the circuit board at least partially overlaps with the capacitor plate set on the circuit board. The second conductive member in the bracket and the capacitor plate constitute a capacitive pressure detection structure. When the circuit board moves in the vertical direction, the distance between the capacitor plate and the second conductive member changes, and the capacitance signal generated by the formed capacitor is changed, thereby realizing the detection of the pressure on the touch pad. Secondly, when the first conductive member moves in the vertical direction from the first initial position with the circuit board, the connecting member moves with the first conductive member and drives the second conductive member to bend. When the bent second conductive member returns to the second initial position, the first conductive member is driven to return to the first initial position through the connecting member. The linkage structure of the first conductive member, the connecting member and the second conductive member provides the touch pad with the effect of automatically returning to the initial position of the touch pad after being touched. The present invention improves the support structure so that the original support structure of the touch panel not only retains the original elastic support function, but also cooperates with the capacitor plate on the circuit board to realize the pressure detection function, thereby reducing the number of parts required for pressure detection and reducing the production cost of the touch panel. In addition, the present invention uses the support as a part of the capacitive pressure detection module, and the detected capacitance change is directly related to the distance change between the circuit board and the support, thereby improving the sensitivity of pressure detection.

[0010] In addition, the number of capacitor plates is N groups; N is a natural number greater than 1; the bracket includes: a first conductive member, and N connecting members extending from the edge of the first conductive member, and at least two of the connecting members have different extension directions from the edge of the first conductive member; each connecting member is correspondingly provided with a second conductive member, and the second conductive members are provided one-to-one with the capacitor plates.

[0011] In addition, the pressure detection device of the touch panel also includes: a vibration motor; the first conductive member includes: a through hole corresponding to the position of the vibration motor, and the vibration motor is connected to the circuit board through the through hole; the pressure detection device of the touch panel also includes: a silicone pad; the silicone pad is connected to the end of the second conductive member away from the connecting member, and the silicone pad is attached to the side of the second conductive member facing away from the circuit board.

[0012] In addition, the number of capacitor plates is N groups; N is a natural number greater than 1; the bracket includes: N first conductive members, and N connecting members extending from the edge of each of the first conductive members, and the N first conductive members do not contact each other; each connecting member is corresponding to a second conductive member, and the second conductive members are arranged one by one in correspondence with the capacitor plates.

[0013] In addition, the capacitor plate is a single plate, and the capacitor plate specifically serves as a transmitter plate or a receiver plate.

[0014] In addition, the capacitor plates are an emitter plate and a receiver plate arranged side by side, and the projection area of ​​the second conductive member toward the circuit board has overlapping areas with both the emitter plate and the receiver plate.

[0015] In addition, a projection area of ​​the capacitor plate toward the second conductive member is located away from the connecting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 is an exploded diagram of a pressure detection device for a touch panel provided by the present invention; Figure 2 is a structural schematic diagram of a circuit board in a pressure detection device for a touch panel provided by the present invention; Figure 3 is an exploded diagram of another pressure detection device for a touch panel provided according to the present invention; Figure 4 is a schematic diagram of the three-dimensional structure of a pressure detection device for a touch panel provided by the present invention; Figure 5 is a schematic diagram of a state of a pressure detection device for a touch panel provided by the present invention when no force is applied; Figure 6 is a schematic diagram of the state of a pressure detection device for a touch panel under a force condition provided by the present invention; Figure 7 is a structural schematic diagram of a circuit board in another pressure detection device for a touch panel provided by the present invention; Figure 8 is a schematic diagram of the three-dimensional structure of another pressure detection device for a touch panel provided by the present invention; Fig. 9 is a schematic diagram of another state of a pressure detection device for a touch panel under no force provided by the present invention; Fig.10 is a schematic diagram of another state of a pressure detection device for a touch panel under a force condition provided by the present invention; Fig.11 The present invention is a schematic diagram of a support structure of a pressure detection device for a touch panel provided by the present invention.

[0018] Description of reference numerals: 1- Cover plate; 2- Circuit board; 3-capacitor plate; 31-emitter plate; 32-receiver plate; 4- bracket; 41- first conductive member; 42- connecting member; 43- second conductive member; 5-Vibration motor; 6- Connector; 7-Silicone pad. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented.

[0020] The following embodiments are divided for the convenience of description and shall not constitute any limitation on the specific implementation of the present invention. The embodiments may be combined with each other and referenced to each other without contradiction.

[0021] An embodiment of the present invention relates to a pressure detection device for a touch panel, such as Figure 1 As shown, the pressure detection device of the touch panel includes: a cover plate 1, a circuit board 2 attached to the cover plate 1, a capacitor plate 3 arranged on the circuit board 2, a bracket 4 electrically connected to the circuit board 2, and a processor; the bracket 4 includes: a first conductive member 41 electrically connected to the circuit board 2, and a second conductive member 43 arranged opposite to the capacitor plate 3, the first conductive member 41 and the second conductive member 43 are respectively in different planes, the second conductive member 43 is spaced from the circuit board 2, and the projection area of ​​the second conductive member 43 toward the circuit board 2 at least partially overlaps with the capacitor plate 3, and when the circuit board 2 moves in the vertical direction, the capacitor plate 3 and the second conductive member 43 The distance between them changes; wherein the vertical direction is the direction perpendicular to the circuit board 2; the bracket 4 also includes: a connecting member 42 connecting the first conductive member 41 and the second conductive member 43, when the first conductive member 41 moves in the vertical direction from the first initial position with the circuit board 2, the connecting member 42 moves with the first conductive member 41 and drives the second conductive member 43 to bend, when the bent second conductive member 43 returns to the second initial position, the first conductive member 41 is driven to return to the first initial position through the connecting member 42; the processor is used to receive the capacitance signal generated by the capacitance formed by the capacitor plate 3 and the second conductive member 43, and determine the magnitude of the pressure according to the capacitance signal.

[0022] Compared with the related art, the embodiment of the present invention improves the original bracket in the touch pad, so that the bracket is composed of at least three parts: a first conductive member electrically connected to the circuit board, a second conductive member spaced apart from the circuit board, and a connecting member connecting the first conductive member and the second conductive member. The projection area of ​​the second conductive member toward the circuit board at least partially overlaps with the capacitor plate set on the circuit board. The second conductive member in the bracket and the capacitor plate constitute a capacitive pressure detection structure. When the circuit board moves in the vertical direction, the distance between the capacitor plate and the second conductive member changes, and the capacitance signal generated by the formed capacitor is changed, thereby realizing the detection of the pressure on the touch pad. Secondly, when the first conductive member moves in the vertical direction from the first initial position with the circuit board, the connecting member moves with the first conductive member and drives the second conductive member to bend. When the bent second conductive member returns to the second initial position, the first conductive member is driven to return to the first initial position through the connecting member. The linkage structure of the first conductive member, the connecting member and the second conductive member provides the touch pad with the effect of automatically returning to the initial position of the touch pad after being touched. The present invention improves the support structure so that the original support structure of the touch panel not only retains the original elastic support function, but also cooperates with the capacitor plate on the circuit board to realize the pressure detection function, thereby reducing the number of parts required for pressure detection and reducing the production cost of the touch panel. In addition, the present invention uses the support as a part of the capacitive pressure detection module, and the detected capacitance change is directly related to the distance change between the circuit board and the support, thereby improving the sensitivity of pressure detection.

[0023] like Figure 2 As shown, a capacitor plate 3 is arranged on the circuit board 2, and is controlled by an external force. When the capacitor plate 3 moves with the circuit board in the vertical direction, the second conductive member 43 of the bracket is far away from the end of the connector 42 because it is fixedly connected to the base, and it can be approximately regarded as the position of the second conductive member 43 has not changed. Therefore, in the process of the capacitor plate 3 moving close to the second conductive member 43, the distance between the capacitor plate 3 and the second conductive member changes, causing the capacitance signal to change, and realizing the pressure detection function. The touch pad can identify the user's pressing of different strengths, and then trigger different instructions. In addition, a vibration motor 5 can also be arranged on the circuit board 2 to provide vibration feedback after detecting the user's pressing. A connector 6 can also be arranged on the circuit board, and the connector connects the circuit board 2 to the host computer to realize the information interaction between the pressure detection device of the touch pad and the host computer. In addition, the circuit board 2 is also provided with touch pad function related chips, electronic components, etc., which are not introduced one by one here.

[0024] In addition, the number of capacitor plates is N groups; N is a natural number greater than 1; the bracket includes: a first conductive member, and N connecting members extending from the edge of the first conductive member, at least two connecting members extending from the edge of the first conductive member in different directions; each connecting member is correspondingly provided with a second conductive member, and the second conductive members are provided one by one with the capacitor plates. The bracket adopts an integral structure to facilitate the assembly and disassembly of the bracket and simplify the installation and disassembly steps of the device.

[0025] like Figure 3 As shown, the number of capacitor plates 3 is set to four groups. Figure 3 In the figure, each group of capacitor plates 3 includes a plate as an emitter plate or a receiver plate. When the capacitor plate is used as an emitter plate, the second conductive member 43 of the bracket is used as a receiver plate. When the capacitor plate is used as a receiver plate, the second conductive member 43 of the bracket is used as an emitter plate. Considering that the bracket has a larger contact area with the outside world and is more susceptible to the external environment, the capacitor plate can be used as a receiver plate, and the second conductive member 43 of the bracket can be used as an emitter plate that is less susceptible to the outside world. The four groups of capacitor plates 3 are respectively arranged near the four corners of the circuit board 2, and the first conductive member 41 of the bracket is fitted in the middle area of ​​the circuit board 2, and extends along the edges of the four corners of the first conductive member 41 toward the four corners of the circuit board 2, which can also be regarded as extending toward the direction of the four groups of capacitor plates 3, and four second conductive members 43 are obtained respectively. The first conductive member 41 and each second conductive member 43 correspond to a connecting member 42, and the connecting member 42 is arranged in a direction perpendicular to the circuit board 2, so that the first conductive member 41 and the second conductive member 43 are respectively in two planes, and there is a certain interval between the second conductive member 43 and the circuit board 2, so that the distance between the second conductive member 43 and the capacitor plate 3 arranged on the circuit board 2 can be changed.

[0026] like Figure 4As shown, in the case where the first conductive member 41 of the bracket 4 is an integral structure, a through hole needs to be opened on the first conductive member 41 to ensure the electrical installation of other components on the circuit board 2. For example, a vibration motor 5 is also provided on the pressure detection device of the touch panel; the first conductive member 41 includes: a through hole corresponding to the position of the vibration motor 5, and the vibration motor passes through the through hole to connect with the circuit board 2. In order to ensure the vibration feedback effect of the vibration motor 5, the pressure detection device of the touch panel may also include: a silicone pad 7; the silicone pad 7 is connected to the end of the second conductive member 43 away from the connecting member 42, and the silicone pad 7 is attached to the side of the second conductive member 43 facing away from the circuit board 2. One side of the silicone pad 7 is connected to the second conductive member 43, and the other side is fixedly connected to the base. It can be approximately considered that the position of the silicone pad is fixed, but due to the material of the silicone, the silicone pad can be deformed to a certain extent. Therefore, when the vibration motor 5 vibrates, the silicone pad 7 can provide the bracket 4 with the ability to move in a small amplitude, and the circuit board 2 connected to the bracket 4 also has the ability to move in a small amplitude, so that the user can feel the vibration effect of the touch panel.

[0027] The capacitor plate in the embodiment of the present invention may be only an emitter plate or a receiver plate, and the capacitor plate may also be an emitter plate and a receiver plate arranged side by side.

[0028] like Figure 4 As shown in FIG. 1 , it is a schematic diagram of the structure in which the capacitor plate 3 is only the receiving plate 32. In this case, the principle of pressure detection is as follows: Figure 5 and Figure 6 As shown, Figure 5 The schematic diagram of the state of each structure in the pressure detection device of the touch panel when no external force is applied is shown in FIG. The capacitor plate (receiving plate 32) is attached to the circuit board 2, and the second conductive member 43 is used as an emitter plate to form a capacitor structure with the capacitor plate. The current is conducted between the second conductive member 43 and the first conductive member 41, and the electric field lines are directed from the second conductive member 43 to the capacitor plate (receiving plate 32). When the cover plate is subjected to an external force F, as shown in FIG. Figure 6 As shown, the circuit board 2 Figure 6The external force F indicates the movement in the direction indicated by the diagram. The position of the silicone pad 7 is connected to the base and is approximately fixed. The first conductive member 41 drives the connecting member 42 to move in the direction of the external force F, driving the second conductive member 43 to bend. In actual situations, the circuit board moves downward for a limited distance, and the bending curvature of the second conductive member 43 is small. The change in the distance between the capacitor plate (receiving plate 32) and the second conductive member 43 can be approximately regarded as the distance moved by the circuit board 2. Therefore, when the capacitor plate (receiving plate 32) moves downward with the circuit board, the distance between the capacitor plate (receiving plate 32) and the second conductive member 43 decreases. According to the capacitance calculation formula: capacitance C=εS / (4πkd); wherein ε is the dielectric constant, which is related to the material properties of the medium between the plates; S is the area facing the plates. The larger the area, the greater the capacitance; d is the distance between the two plates. When the distance increases, the capacitance decreases; k is the electrostatic force constant (approximately 8.99×10^9 N·m² / C²). As the circuit board moves downward, the capacitance signal increases. The downward movement distance of the circuit board can be calculated based on the size of the capacitance signal, and then the size of the external force F can be obtained.

[0029] In addition, the first conductive member 41 of the bracket can also be connected to the GND channel. At this time, the distance between the capacitor plate (receiving plate 32) and the second conductive member 43 is reduced, and the detected voltage signal of the capacitor plate (receiving plate 32) changes accordingly. The pressure can also be determined based on the signal generated by the capacitor assembly formed by the detected capacitor plate (receiving plate 32) and the second conductive member 43.

[0030] like Figure 7 As shown, each group of capacitor plates is an emitter plate 31 and a receiver plate 32 arranged side by side, and the positions of the emitter plate 31 and the receiver plate 32 in each group of capacitor plates can be interchanged. The projection area of ​​the second conductive member toward the circuit board has an overlapping area with the emitter plate 31 and the receiver plate 32. Taking the arrangement of four groups of capacitor plates as an example, Figure 7 As shown, the arrangement of the emitter plate 31 and the receiving plate 32 included in each group of capacitor plates is the same, and the four groups of capacitor plates are respectively arranged near the four corners of the circuit board to facilitate accurate measurement of the pressure at different positions.

[0031] Figure 8 It is a three-dimensional structural diagram of the pressure detection device of the touch panel, the vibration motor 5 is arranged at the through hole in the middle area of ​​the bracket, and the connector 6 is arranged in the area outside the bracket. Therefore, there is no need to set an additional hole for accommodating the connector 6 at the bracket.

[0032] When the capacitor plate includes a transmitter plate 31 and a receiver plate 32, the principle of pressure detection is as follows: Figures 9 and 10As shown, when the pressure detection device of the touch panel is not subjected to external force, the state of the internal structure of the pressure detection device of the touch panel is as follows: Fig. 9 As shown, the capacitor plates (the emitter plate 31 and the receiving plate 32 arranged side by side) are attached to the circuit board 2, and the second conductive member 43 serves as a floating conductive medium to assist the electric field transmission between the emitter plate 31 and the receiving plate 32. The emitter plate 31, the receiving plate 32 and the second conductive member 43 together form a capacitor assembly. The electric field in the capacitor assembly is emitted by the emitter plate 31 and transmitted to the receiving plate 32 via the second conductive member 43. When the cover plate is subjected to an external force F, as shown in FIG. Fig.10 As shown, the circuit board 2 Fig.10 The external force F shown moves in the indicated direction, the position of the silicone pad 7 is connected to the base, and the approximate position is fixed. The first conductive member 41 drives the connecting member 42 to move in the direction of the external force F, driving the second conductive member 43 to bend. In actual situations, the circuit board moves downward for a limited distance, and the bending curvature of the second conductive member 43 is small. The distance changes between the emitter plate 31 and the receiving plate 32 and the second conductive member 43 can be approximately regarded as the distance the circuit board moves. Therefore, when the emitter plate 31 moves downward with the circuit board, the distances between the emitter plate 31 and the receiving plate 32 and the second conductive member 43 are reduced, and the capacitance signal generated by the capacitor assembly composed of the emitter plate 31, the receiving plate 32 and the second conductive member 43 becomes larger. The downward movement distance of the circuit board can be calculated based on the size of the capacitance signal, and then the size of the external force F can be obtained.

[0033] In addition, in order to save space on the circuit board and not affect the arrangement of chips, electronic components, etc. on the circuit board, the bracket can also be disassembled from a complete structure into several small substructures. Fig.11 As shown, the number of capacitor plates is N groups; N is a natural number greater than 1; the bracket 4 includes: N first conductive members 41, and N connecting members 42 extending from the edge of each first conductive member 41, and the N first conductive members 41 do not contact each other; each connecting member 42 is provided with a corresponding second conductive member 43, and the second conductive members 43 are provided in a one-to-one correspondence with the capacitor plates. Each substructure of the bracket disassembled includes a first conductive member 41, a connecting member 42 and a second conductive member 43, and each substructure is evenly distributed on the circuit board, so as to provide uniform support force when the circuit board is subjected to external force.

[0034] In addition, the capacitor plate in the above embodiment can be a portion of copper foil on the circuit board, which is connected to a specific pin of the chip as a capacitor emitter plate, or two separate copper foils are used as the emitter plate and the receiving plate of the capacitor. The first conductive member of the bracket is fixed on the circuit board and is electrically connected to the corresponding pin of the chip, for example, by welding the first conductive member to the corresponding pin, or by a conductive adhesive to electrically connect the first conductive member to the corresponding pin.

[0035] In addition, the projection area of ​​the capacitor plate in the direction of the second conductive member is located away from the connecting member. Such a design can reduce the influence of the bending of the second conductive member under force on the pressure detection effect. Since the bending degree of the second conductive member near the connecting member is more serious than the bending degree of the position far from the connecting member, when the capacitor plate is set at a position far from the connecting member, when the capacitor plate moves in the direction close to the second conductive member, the distance between the capacitor plate and the second conductive member is closer to the distance the circuit board moves downward, thereby improving the sensitivity of pressure detection.

[0036] In addition, the connection between the connector and the first conductive member is rounded, and the connection between the connector and the second conductive member is rounded, which can more stably transmit force and avoid irreversible damage to the connector position of the bracket due to force.

[0037] Finally, in order to ensure the stability of the support of the circuit board by the bracket in the embodiment of the present invention, the thickness or material of the bracket can be adjusted to ensure that the bracket has a certain rigidity, can maintain its original state without deformation when not subjected to external force, and the bracket has the ability to elastically deform, and can quickly return to its original state when the external force is removed after being deformed by external force. At the same time, since the bracket in the embodiment of the present invention acts as an electrical connection structure, the bracket can be set to a material with a certain conductivity, and the material of the bracket can be adjusted to make its resistance value smaller, so as to minimize the influence of the bracket resistance on the detection result of the capacitive pressure detection unit.

[0038] In the embodiment of the present invention, only the bracket that is reused as the pressure detection structure can be used as the support structure of the cover plate, and no other support structure is required. Since the bracket in the embodiment of the present invention is large enough and has a sufficient contact area with the circuit board, a stable support effect can be provided by only using the bracket.

[0039] Another embodiment of the present invention relates to an electronic device, which includes: a housing and the above-mentioned touch panel pressure detection device arranged on the housing.

[0040] Compared with the related art, the electronic device provided by this embodiment of the present invention is provided with the pressure detection device of the touch panel provided by the aforementioned embodiment. Therefore, it also has the technical effects provided by the aforementioned embodiment, which will not be elaborated here.

[0041] Another embodiment of the present invention relates to a pressure detection method for a touch panel, which is applied to the pressure detection device of the above-mentioned touch panel, and the method includes: determining a capacitance signal generated by a capacitance formed by a capacitance plate and a second conductive member in the pressure detection device of the touch panel; and determining the pressure applied to the touch panel based on the capacitance signal and the correspondence between the capacitance signal and the pre-stored capacitance signal and the pressure.

[0042] The principle of the capacitance signal generated by the capacitor formed by the capacitor plate and the second conductive member, as well as the relationship between the capacitance signal and the pressure are specifically described in the above embodiments and will not be repeated here.

[0043] The step division of the various methods above is only for clear description. When implemented, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the protection scope of the present invention. Adding insignificant modifications or introducing insignificant designs to the algorithm or process without changing the core design of the algorithm and process are all within the protection scope of the invention.

[0044] Another embodiment of the present invention relates to a computer-readable storage medium storing a computer program, which implements the above method embodiment when executed by a processor.

[0045] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0046] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A pressure detection device for a touch panel, characterized in that: include: A cover plate, a circuit board attached to the cover plate, a capacitor plate disposed on the circuit board, a bracket electrically connected to the circuit board, and a processor; The bracket comprises: a first conductive member electrically connected to the circuit board, and a second conductive member arranged opposite to the capacitor plate, the first conductive member and the second conductive member are respectively located in different planes, the second conductive member is spaced apart from the circuit board, and a projection area of ​​the second conductive member in a direction toward the circuit board at least partially overlaps with the capacitor plate, and when the circuit board moves in a vertical direction, the distance between the capacitor plate and the second conductive member changes; wherein the vertical direction is a direction perpendicular to the circuit board; The bracket further includes: a connecting member connecting the first conductive member and the second conductive member, wherein when the first conductive member moves in a vertical direction from a first initial position along with the circuit board, the connecting member moves along with the first conductive member and drives the second conductive member to bend, and when the bent second conductive member returns to the second initial position, the first conductive member is driven to return to the first initial position through the connecting member; The processor is used to receive a capacitance signal generated by the capacitor formed by the capacitor plate and the second conductive member, and determine the magnitude of the pressure according to the capacitance signal.

2. The pressure detection device of the touch panel according to claim 1, characterized in that: The number of the capacitor plates is N groups; N is a natural number greater than 1; The bracket comprises: one first conductive member, and N connecting members extending from the edge of the first conductive member, wherein at least two of the connecting members extend from the edge of the first conductive member in different directions; A second conductive member is correspondingly arranged for each of the connecting members, and the second conductive members are arranged in a one-to-one correspondence with the capacitor plates.

3. The pressure detection device of the touch panel according to claim 2, characterized in that: Also includes: Vibration motor; The first conductive member comprises: a through hole corresponding to the position of the vibration motor, and the vibration motor passes through the through hole to be connected to the circuit board; The pressure detection device of the touch panel further includes: a silicone pad; The silicone pad is connected to an end of the second conductive member away from the connecting member, and the silicone pad is attached to a side of the second conductive member facing away from the circuit board.

4. The pressure detection device of a touch panel according to claim 1, characterized in that: The number of the capacitor plates is N groups; N is a natural number greater than 1; The bracket comprises: N first conductive members, and N connecting members extending from the edge of each first conductive member, wherein the N first conductive members do not contact each other; Each of the connecting members is provided with a corresponding second conductive member, and the second conductive members are provided with a one-to-one correspondence with the capacitor plates.

5. The pressure detection device for a touch panel according to any one of claims 1 to 4, characterized in that: The capacitor plate is a single plate, and the capacitor plate is specifically used as a transmitter plate or a receiver plate.

6. The pressure detection device for a touch panel according to any one of claims 1 to 4, characterized in that: The capacitor plates are an emitter plate and a receiver plate arranged side by side, and a projection area of ​​the second conductive member toward the circuit board has overlapping areas with both the emitter plate and the receiver plate.

7. The pressure detection device for a touch panel according to any one of claims 1 to 4, characterized in that: The projection area of ​​the capacitor plate toward the second conductive member is located far away from the connecting member.

8. An electronic device, characterized in that: The invention comprises: a housing and a pressure detection device of a touch panel according to any one of claims 1 to 7 arranged on the housing.

9. A method for detecting pressure of a touch panel, characterized in that: The pressure detection device for a touch panel according to any one of claims 1 to 7, the method comprising: Determining a capacitance signal generated by a capacitance formed by a capacitance plate and a second conductive member in a pressure detection device of the touch panel; The pressure applied to the touch panel is determined according to the capacitance signal and a pre-stored correspondence between the capacitance signal and the pressure.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the pressure detection method for a touch panel according to claim 9 is implemented.

Images