Touch position detection module, electronic equipment, detection method and storage medium

Abstract

The embodiment of the invention relates to a touch detection structure, and discloses a touch position detection module, electronic equipment, a detection method and a storage medium. The touch position detection module comprises a touch detection module, a pressure detection module, a cover plate, a circuit board arranged below the cover plate and a functional device arranged below the circuit board, the circuit board at least comprises a first surface close to the cover plate and a second surface close to the functional device; the touch detection module is arranged on the first surface and used for obtaining a first capacitance signal based on coupling capacitance generated by finger touch of a user. The pressure detection module is arranged on the second surface and used for obtaining a second capacitance signal based on acting force generated by finger touch of the user. The processor is used for obtaining first position information based on the first capacitance signal, obtaining second position information based on the second capacitance signal, and determining the touch position of the finger of the user according to the first position information and the second position information.

Description

Technical Field

[0001] Embodiments of the present invention relate to a touch detection structure, and more particularly to a touch position detection module, an electronic device, a detection method, and a storage medium. Background Art

[0002] Touchpads are widely used in electronic products as an input device for electronic devices, which can control cursor movement or control electronic devices to perform different functions by sensing the movement of user's fingers. Touchpads usually use touch position detection modules to detect the position of user's fingers. The response sensitivity of electronic devices is closely related to the detection accuracy of touch position detection modules.

[0003] The inventors have found that the touch position detection module has at least the following problems: due to the miniaturization of electronic devices, the area of ​​the touch pad is gradually reduced. When the area of ​​the touch pad is not much different from the area of ​​the finger, or the area of ​​the touch pad is smaller than the area of ​​the finger, the accuracy of the touch position detection module in detecting the finger position decreases. In addition, under the influence of external environmental factors, the touch position detection module is also prone to failure, resulting in a decrease in the sensitivity of the touch pad or even failure, affecting the user experience. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a touch position detection module, an electronic device, a detection method and a storage medium, in which a pressure detection module is additionally added to the touch position detection module to assist the touch detection module in calculating the touch position, thereby ensuring the accuracy of touch position detection when the touch detection module has low sensitivity or fails.

[0005] To solve the above technical problems, an embodiment of the present invention provides a touch position detection module, including: a touch detection module, a pressure detection module, a cover plate, a circuit board arranged under the cover plate, and a functional device arranged under the circuit board; the circuit board at least includes a first surface close to the cover plate, and a second surface close to the functional device; the touch detection module is arranged on the first surface, and the touch detection module is used to obtain a first capacitance signal based on the coupling capacitance generated by the touch of a user's finger; the pressure detection module is arranged on the second surface, and the pressure detection module is used to obtain a second capacitance signal based on the force generated by the touch of the user's finger; the touch position detection module also includes: a processor; the processor is used to obtain first position information based on the first capacitance signal, obtain second position information based on the second capacitance signal, and determine the touch position of the user's finger according to the first position information and the second position information.

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

[0007] An embodiment of the present invention also provides a method for detecting a pressing position, which is applied to the above-mentioned touch position detection module, and the method includes: determining first position information based on a first capacitance signal generated by a touch detection module; determining second position information based on a second capacitance signal generated by a pressure detection module; and determining the touch position of the user's finger based on the first position information and the second position information.

[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 position detection method is implemented.

[0009] Compared with the related art, the embodiment of the present invention sets different types of detection modules in the touch position detection module, namely, a touch detection module set on the first surface close to the cover plate, and a pressure detection module set on the second surface close to the functional device. The touch detection module is used to obtain a first capacitance signal based on the coupling capacitance generated by the touch of the user's finger to determine the first position information, and the pressure detection module is used to obtain a second capacitance signal based on the force generated by the touch of the user's finger to determine the second position information. The touch position information (i.e., the first position information and the second position information) obtained by different methods are comprehensively analyzed to obtain the touch position of the user's finger. When the detection result of a single detection method is inaccurate, the detection result obtained by another detection method can be used for correction, thereby ensuring the accuracy of the detection of the touch position of the user's finger.

[0010] In addition, the circuit board is a flexible circuit board, and the flexible circuit board is bent to form a first plane, a second plane and a third plane in sequence in a direction perpendicular to the cover plate, wherein the first plane is close to the cover plate and the third plane is close to the functional device; the first surface is a side of the first plane close to the cover plate, and the second surface is a side of the second plane close to the functional device.

[0011] In addition, the touch position detection module further includes: a first supporting structure and a second supporting structure; the first supporting structure is arranged between the first plane and the second plane, and the second supporting structure is arranged between the second plane and the third plane; wherein the second supporting structure is an elastic structure.

[0012] In addition, the touch detection module is composed of several first capacitor structures, which are composed of a first emitter plate and a first receiver plate. Several first emitter plates and several first receiver plates are laid on the first surface, and any two first emitter plates are spaced apart, and any two first receiver plates are spaced apart.

[0013] In addition, the pressure detection module is composed of a plurality of second capacitor structures, which are composed of two second emitter plates and two second receiving plates; one of the second emitter plates and one of the second receiving plates are arranged in parallel in the first edge area of ​​the second surface to form a first pressure detection sub-capacitor; another second emitter plate and another second receiving plate are arranged in parallel in the second edge area of ​​the second surface to form a second pressure detection sub-capacitor; the first edge area and the second edge area correspond to opposite sides of the second surface.

[0014] In addition, when the force is generated by the user's finger touching, the first pressure detection sub-capacitor generates a first sub-capacitor signal, the second pressure detection sub-capacitor generates a second sub-capacitor signal, and the processor obtains second position information based on the first sub-capacitor signal and the second sub-capacitor signal.

[0015] In addition, determining the touch position of the user's finger according to the first position information and the second position information includes: determining a first weight coefficient corresponding to the first position information and a second weight coefficient corresponding to the second position information according to the first capacitance signal; and calculating and determining the touch position of the user's finger using the first position information, the first weight coefficient, the second position information and the second weight coefficient. 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 a structural schematic diagram of a touch detection module in a large-area touch panel provided by the present invention;

[0018] Figure 2 This is a schematic diagram of finger touch position detection in a large-area touch panel according to the present invention;

[0019] Figure 3 This is a schematic diagram of finger touch position detection in a large-area touch panel according to the present invention;

[0020] Figure 4 This is a schematic diagram of finger touch position detection in a small-area touch panel according to the present invention;

[0021] Figure 5 This is a schematic diagram of finger touch position detection in a small-area touch panel according to the present invention;

[0022] Figure 6is a structural schematic diagram of a pressure detection module in a touch position detection module provided by the present invention;

[0023] Figure 7 is a schematic diagram of a state of a touch position detection module provided by the present invention when no force is applied;

[0024] Figure 8 is a schematic diagram of the state of a touch position detection module under a force condition provided by the present invention;

[0025] Fig. 9 is a schematic diagram of the state of a touch position detection module under another force condition provided by the present invention;

[0026] Fig.10 is a schematic diagram of the state of a touch position detection module under another force condition provided by the present invention;

[0027] Fig.11 is a schematic diagram illustrating relevant parameters of a touch position detection module provided by the present invention;

[0028] Fig.12 is a schematic diagram of a first pressure detection sub-capacitor structure of a touch position detection module provided by the present invention;

[0029] Fig.13 It is a structural schematic diagram of a second emitting electrode plate and a second receiving electrode plate of a touch position detection module provided by the present invention;

[0030] Fig.14 It is a structural schematic diagram of a second emitting electrode plate and a second receiving electrode plate of a touch position detection module provided by the present invention;

[0031] Fig.15 is a structural schematic diagram of a touch position detection module provided according to the present invention;

[0032] Fig.16 is an exploded diagram of a touch position detection module provided according to the present invention;

[0033] Fig.17 is a system block diagram of a chip of a touch position detection module provided according to the present invention;

[0034] Fig.18 is a communication system block diagram of a touch position detection module provided according to the present invention;

[0035] Fig.19 is a flow chart of a touch position detection method provided according to the present invention. DETAILED DESCRIPTION

[0036] As known from the background technology, when the touch pad area is reduced, the accuracy of finger touch position detection may decrease for the following reasons: Figure 1 As shown in the figure, taking the touch surface as being divided into four sub-surfaces, emitter plates Tx1, Tx2, and receiver plates Rx1, Rx2 are respectively provided on each sub-surface. Tx1 and Rx1 form a capacitor C11; Tx1 and Rx2 form a capacitor C12; Tx2 and Rx1 form a capacitor C21; Tx2 and Rx2 form a capacitor C22. When a user's finger touches the touch surface, Figure 2 As shown in the figure, the circular line represents the user's finger. The finger and the capacitor formed above generate coupling capacitance, which causes the capacitance value of the capacitor formed by the electrode corresponding to the touch surface area touched by the finger to change. Due to the different finger touch positions, the electrode area corresponding to the touch surface area touched by the finger is different, such as Figure 2 and Figure 3 As shown in FIG. 1 , the electrode area corresponding to the touch surface area contacted by the finger corresponding to different touch positions is schematically shown. Figure 2 As shown in the figure, the finger touches the center of the touch surface, and the contact area between the finger and each electrode plate is the same. Since the contact area is related to the change of capacitance value, when the finger touches the center of the touch surface, the change amount of capacitance C11, C12, C21, and C22 is the same. Figure 3 As shown in the figure, the finger touches the non-central position, the contact area between the finger and each electrode plate is different, and the change amount of the four capacitors is also different. Figure 3 In the case of the finger touch position shown, the change amount of each capacitor has the following rule: δC22>δC11; δC21>δC12. Therefore, the finger touch position can be determined by the change of the capacitance value of different capacitors.

[0037] However, when the touch pad area is reduced, such as Figure 4 and Figure 5 As shown, Figure 4 Indicates the position of the finger touching the left side of the touchpad. Figure 5 Indicates the position where the finger touches the touchpad to the right. When the finger touches different positions, the finger can completely cover the touchpad, that is, Figure 4 and Figure 5 In the touch position shown, the finger has the same influence on the capacitance values ​​of capacitors C11, C12, C21, and C22, and the change in the capacitance values ​​of capacitors C11, C12, C21, and C22 is the same. Therefore, although the finger touch position changes, the change cannot be detected from the change in capacitance value, and the accurate finger touch position cannot be obtained.

[0038] In order to solve the above-mentioned problem of being unable to accurately detect the finger touch position, the present invention proposes the following embodiments to ensure the accuracy of touch position detection when the touch detection module has low sensitivity or fails.

[0039] 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.

[0040] 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.

[0041] The embodiment of the present invention relates to a touch position detection module, the core of which is: the touch position detection module includes: a touch detection module, a pressure detection module, a cover plate, a circuit board arranged under the cover plate, and a functional device arranged under the circuit board; the circuit board includes at least a first surface close to the cover plate, and a second surface close to the functional device; the touch detection module is arranged on the first surface, and the touch detection module is used to obtain a first capacitance signal based on the coupling capacitance generated by the touch of the user's finger; the pressure detection module is arranged on the second surface, and the pressure detection module is used to obtain a second capacitance signal based on the force generated by the touch of the user's finger; the touch position detection module also includes: a processor; the processor is used to obtain first position information based on the first capacitance signal, obtain second position information based on the second capacitance signal, and determine the touch position of the user's finger according to the first position information and the second position information. An additional pressure detection module is added to the touch position detection module to assist the touch detection module in calculating the touch position, and ensure the accuracy of touch position detection when the touch detection module is low in sensitivity or fails.

[0042] Compared with the related art, the embodiment of the present invention sets different types of detection modules in the touch position detection module, namely, a touch detection module set on the first surface close to the cover plate, and a pressure detection module set on the second surface close to the functional device. The touch detection module is used to obtain a first capacitance signal based on the coupling capacitance generated by the touch of the user's finger to determine the first position information, and the pressure detection module is used to obtain a second capacitance signal based on the force generated by the touch of the user's finger to determine the second position information. The touch position information (i.e., the first position information and the second position information) obtained by different methods are comprehensively analyzed to obtain the touch position of the user's finger. When the detection result of a single detection method is inaccurate, the detection result obtained by another detection method can be used for correction, thereby ensuring the accuracy of the detection of the touch position of the user's finger.

[0043] In the embodiment of the present invention, the touch detection module is composed of a plurality of first capacitor structures, the first capacitor structure is composed of a first emitter plate and a first receiver plate, the plurality of first emitter plates and the plurality of first receiver plates are laid on the first surface, any two first emitter plates are arranged at intervals, and any two first receiver plates are arranged at intervals. Taking the first surface as divided into 4 sub-surfaces as an example, the distribution of the plurality of first emitter plates (Tx1, Tx2) and the plurality of first receiver plates (Rx1, Rx2) is as follows: Figure 1 As shown. In addition, the shape of the sub-surfaces into which the first surface is divided can also be square, rectangular, diamond, etc., and the specific shape is designed based on the size and shape of the touch panel. After the finger touches the touch panel, a coupling capacitor is formed with the touch detection module. The method of determining the first position information of the finger touch based on the change of the capacitance value is consistent with the previous description and will not be repeated here.

[0044] like Figure 6 As shown, the pressure detection module is composed of a plurality of second capacitor structures 20, and the second capacitor structure 20 is composed of two second emitter plates 21 and two second receiving plates 22; one of the second emitter plates 21 and one of the second receiving plates 22 are arranged in parallel in the first edge area of ​​the second surface to form a first pressure detection sub-capacitor; another second emitter plate 21 and another second receiving plate 22 are arranged in parallel in the second edge area of ​​the second surface to form a second pressure detection sub-capacitor; the first edge area and the second edge area correspond to opposite sides of the second surface.

[0045] The working principle of the second capacitor structure 20 in the pressure detection module is described in detail below:

[0046] In order to facilitate the explanation of the principle of determining the position and magnitude of the force, the structure of the touch position detection module in the embodiment of the present solution is simplified, as shown in FIG. Figure 7 As shown, two second emitter plates and two second receiver plates are arranged on the lower surface of the second surface 42. A first pressure detection sub-capacitor formed by one set of the second emitter plates and the second receiver plates is located at the elastic member position on the left side of the figure, and a second pressure detection sub-capacitor formed by another set of the second emitter plates and the second receiver plates is located at the elastic member position on the right side of the figure.

[0047] like Figures 8 to 10 As shown, when the cover is touched by a finger, the circuit board below the cover moves toward the functional device under the force, and when the circuit board is bent to form a first plane, a second plane, and a third plane in a direction perpendicular to the cover, the distance between the second plane 42 and the third plane 43 where the pressure detection module is set will change under the influence of the force F. Figure 8As shown in FIG. 1 , if the force position of the force F is in the middle of the cover plate, the force component F1 received by the first pressure detection sub-capacitor disposed on the second plane 42 is approximately the same as the force component F2 received by the second pressure detection sub-capacitor disposed on the second plane 42. The distance between the second plane 42 and the third plane 43 at the two positions changes in the same manner. If the force position of the force F is not in the middle of the cover plate, as Fig. 9 As shown, if the force F is applied close to the first pressure detection sub-capacitor on the left side of the figure, the force component F1 received by the first pressure detection sub-capacitor disposed on the second plane 42 is greater than the force component F2 received by the second pressure detection sub-capacitor disposed on the second plane 42, and the change in the distance between the second plane 42 and the third plane 43 at the two locations is positively correlated with the force components received. Fig.10 As shown, if the force position of the force F is close to the second pressure detection sub-capacitor on the right side of the figure, the component force F1 received by the first pressure detection sub-capacitor set on the second plane 42 is smaller than the component force F2 received by the second pressure detection sub-capacitor set on the second plane 42, and the change in the distance between the second plane 42 and the third plane 43 at the two positions is positively correlated with the component forces received.

[0048] like Fig.11 As shown, assuming that the distance between the first pressure detection sub-capacitor position O on the left side of the figure and the second pressure detection sub-capacitor position P on the right side of the figure is L, and the force position of the force F is x away from the first pressure detection sub-capacitor position O on the left side of the figure, through the force balance formula in the vertical direction shown in the figure: F=F1+F2; and the torque balance formula about point O: F*x=F2*L, it can be known that the magnitude of the force: F=F1+F2; the force position of the force F is x=F2*L / (F1+F2).

[0049] In addition, since the touch pad is a flat surface, it can be Figure 6 As shown, a group of second emitter plates and second receiver plates are arranged at the positions of the four edges of the second surface of the second plane of the circuit board. The above-mentioned force position x can be obtained by using two groups of second emitter plates and second receiver plates arranged at one group of opposite edges. Similarly, by using another group of two groups of second emitter plates and second receiver plates arranged at another group of opposite edges, the force position y in another direction can be obtained through the above-mentioned calculation method. By combining the above-mentioned force positions, the second position information (x, y) touched by the finger can be obtained.

[0050] The composition of the second capacitor structure is as follows Fig.12As shown, it is composed of a second emitter plate 21, a second receiver plate 22 and a conductive medium 23; the second emitter plate 21 and the second receiver plate 22 are arranged in parallel on the second surface of the circuit board; the conductive medium 23 can be arranged at a position where the third plane of the circuit board faces the second surface, and can be suspended in the middle gap between the second plane and the third plane of the circuit board through a bracket. The conductive medium 23 can be a metal sheet or other conductive medium, and the material of the conductive medium can be adjusted according to the demand for the change of the capacitance signal.

[0051] In addition, the second emitter plate 21 and the second receiver plate 22 can also be arranged as follows: Figure 13 to Figure 14 As shown, the centers of the second emitter plate 21 and the second receiver plate 22 coincide with each other. Fig.13 As shown, the second emitter plate 21 is a polygonal ring with a hollow center, and the shape of the second receiver plate 22 is a polygon that coincides with the center of the second emitter plate 21. In the positive projection direction of the second emitter plate 21 toward the second receiver plate 22, the second emitter plate 21 and the second receiver plate 22 have no overlapping area. Fig.14 As shown, the second emitter plate 21 is a ring, the second receiver plate 22 is a circle coinciding with the center of the second emitter plate 21 , and in the positive projection direction of the second emitter plate 21 toward the second receiver plate 22 , the second emitter plate 21 and the second receiver plate 22 have no overlapping area.

[0052] The overall structure of the touch position detection module is described in detail below. Fig.15 As shown, the touch position detection module includes: a cover plate 30, a circuit board 40 disposed under the cover plate 30, and a functional device 50 disposed under the circuit board 40. The touch detection module is disposed on the first surface of the circuit board 40 close to the cover plate 30, and the pressure detection module is disposed on the second surface of the circuit board 40 close to the functional device 50. Fig.16 As shown, it is an exploded view when the circuit board of the touch position detection module is a flexible circuit board. The flexible circuit board 40 is bent to form a first plane 41, a second plane 42 and a third plane 43 in sequence in a direction perpendicular to the cover plate 30, wherein the first plane 41 is close to the cover plate 30, and the third plane 43 is close to the functional device 50; the first surface of the touch detection module is set as a side of the first plane 41 close to the cover plate, and the second surface of the pressure detection module is set as a side of the second plane 42 close to the functional device.

[0053] In addition, in order to prevent deformation of the flexible circuit board and other internal components, it is necessary to set up several supporting structures in the touch position detection module. Fig.16As shown, a first reinforcement structure 61 is arranged between the cover plate 30 and the first plane 41 of the flexible circuit board, a first support structure 62 is arranged between the first plane 41 and the second plane 42, a second support structure 63 is arranged between the second plane 42 and the third plane 43, and a bracket 70 is also arranged between the second support structure 63 and the third plane 43. The bracket 70 is provided with a positioning hole, and the touch position detection module is fixed to the whole machine by screws through the positioning hole. The bracket 70 can be used as a conductive medium in the pressure detection module. A second reinforcement structure 64 can also be arranged between the third plane 43 of the flexible circuit board and the functional device 50, and a third reinforcement structure 65 is arranged at the extension end of the third plane 43 of the flexible circuit board to avoid deformation of the extension end of the flexible circuit board. The above-mentioned first reinforcement structure 61, the first support structure 62, the second reinforcement structure 64 and the third reinforcement structure 65 are all rigid structures, and the second support structure 63 is a bowl-shaped elastic structure to realize the detection of the second position of the pressure detection module.

[0054] Regarding the processing of the capacitance signal of the touch detection module and the pressure detection module, Fig.17 As shown, the touch position detection module also includes a chip, the emitter plates Tx1, Tx2...TxM1, TxM2 of the capacitor structure are connected to the corresponding pins of the chip, and the receiving plates Rx1, Rx2...RxN1, RxN2 of the N groups of capacitor structures are connected to the corresponding pins of the chip. Among them, Tx1 to TxM1, Rx1 to RxN1 are the channels corresponding to the touch detection module, and TxM1+1 to TxM2, RxN1+1 to RxN2 are the channels corresponding to the pressure detection module. The chip transfers all current capacitance values ​​to the MCU of the chip for signal processing. The first position information is calculated based on the information of the channel corresponding to the touch detection module, and the second position information and the size of the touch force are calculated based on the information of the channel corresponding to the pressure detection module. The first position information and the second position information are fused and processed by an algorithm to generate a set of final touch positions of the user's fingers.

[0055] The chip and the host computer are connected by Fig.18 The interface (I2C) shown in the figure is used for communication, and the calculated touch position and force of the user's finger are fed back to the host computer for further processing. The host computer can be the main control chip of the consumer electronic product.

[0056] An embodiment of the present invention relates to a touch position detection method, which is applied to the above-mentioned touch position detection module, and the method includes: determining first position information based on a first capacitance signal generated by a touch detection module; determining second position information based on a second capacitance signal generated by a pressure detection module; and determining the touch position of the user's finger based on the first position information and the second position information.

[0057] Specifically, when determining the touch position of the user's finger according to the first position information and the second position information, such as Fig.19 As shown, in the case of touch recognition, the first position information is determined according to the first capacitance generated by the touch detection module, and the second position information is determined according to the second capacitance signal generated by the pressure detection module, and the first weight coefficient corresponding to the first position information and the second weight coefficient corresponding to the second position information are respectively determined, and the first position information, the first weight coefficient, the second position information and the second weight coefficient are weighted and normalized to determine the touch position of the user's finger.

[0058] The determination of the first weight coefficient and the second weight coefficient is related to the first capacitance signal detected by the touch detection module. If the average value of the contact area between the finger and each electrode in the touch detection module is small, and the influence of the change of the first capacitance signal on the change of the finger touch position is large, it can be determined that the first position information detected by the touch detection module is more accurate finger touch position information, then the first weight coefficient corresponding to the first position information can be set to a large weight, and the second weight coefficient corresponding to the second position information is set to a small weight. On the contrary, if the average value of the contact area between the finger and each electrode in the touch detection module is large, and the change of the contact area between the finger and each electrode in the touch detection module is almost unchanged when the finger touch position is different, then it can be determined that the first position information detected by the touch detection module is inaccurate finger touch position information, then the first weight coefficient corresponding to the first position information can be set to a small weight, and the second weight coefficient corresponding to the second position information is set to a large weight.

[0059] The first weight coefficient and the second weight coefficient are set dynamically. When the second weight coefficient is fixedly set to 1, the size of the first weight coefficient is negatively correlated with the size of the average value of the contact area between the finger and each electrode in the touch detection module. When the average value of the contact area between the finger and each electrode in the touch detection module is the same as the electrode area, that is, the finger completely covers all the electrodes of the touch detection module, at this time, the first weight coefficient can be 0.

[0060] In addition to adjusting the weight coefficient based on the touch detection module, the weight coefficient can also be adjusted based on the detection result of the pressure detection module. In theory, the greater the force of the user's finger, the more accurate the detection result of the pressure detection module. The second weight coefficient is set according to the force detected by the pressure detection module. When the first weight coefficient remains unchanged, the second weight coefficient is positively correlated with the force.

[0061] In practical applications, the detection results of the touch detection module and the detection results of the pressure detection module may be comprehensively used to determine the first weight coefficient and the second weight coefficient.

[0062] The method of using the first position information, the first weight coefficient, the second position information and the second weight coefficient to perform weighted and normalized calculation to determine the touch position of the user's finger is as follows:

[0063] Assuming that the first position information is (x1, y1), the second position information is (x2, y2), the first weight coefficient is k1, and the second weight coefficient is k2, the final position coordinates are [k1*(x1, y1)+k2*(x2, y2)] / (k1+k2). The touch position of the user's finger is obtained by comprehensively analyzing the touch position information obtained by different methods (i.e., the first position information and the second position information). If the detection result of a single detection method is inaccurate, the detection result obtained by another detection method can be used for correction, thereby ensuring the accuracy of the detection of the user's finger touch position.

[0064] 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.

[0065] Another embodiment of the present invention relates to an electronic device, including: a housing and a touch panel disposed on the housing, wherein the touch panel includes the above-mentioned touch position detection module.

[0066] Compared with the related art, the electronic device provided by this embodiment of the present invention is provided with the touch position detection module provided by the aforementioned embodiment. Therefore, it also has the technical effects provided by the aforementioned embodiment, which will not be elaborated here.

[0067] 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.

[0068] 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 several instructions for making a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) 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.

[0069] 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 touch position detection module, characterized in that: include: A touch detection module, a pressure detection module, a cover plate, a circuit board disposed under the cover plate, and a functional device disposed under the circuit board; The circuit board at least comprises a first surface close to the cover plate, and a second surface close to the functional device; The touch detection module is disposed on the first surface, and the touch detection module is used to obtain a first capacitance signal based on a coupling capacitance generated by a user's finger touching the first surface; The pressure detection module is disposed on the second surface, and the pressure detection module is used to obtain a second capacitance signal based on the force generated by the user's finger touching the second surface; The touch position detection module further includes: a processor; The processor is used to obtain first position information based on the first capacitance signal, obtain second position information based on the second capacitance signal, and determine the touch position of the user's finger according to the first position information and the second position information.

2. The touch position detection module according to claim 1, characterized in that: The circuit board is a flexible circuit board, and the flexible circuit board is bent to sequentially form a first plane, a second plane and a third plane in a direction perpendicular to the cover plate, wherein the first plane is close to the cover plate, and the third plane is close to the functional device; The first surface is a side of the first plane close to the cover plate, and the second surface is a side of the second plane close to the functional device.

3. The touch position detection module according to claim 2, characterized in that: Also includes: a first support structure and a second support structure; The first supporting structure is arranged between the first plane and the second plane, and the second supporting structure is arranged between the second plane and the third plane; wherein the second supporting structure is an elastic structure.

4. The touch position detection module according to claim 1 or 2, characterized in that: The touch detection module is composed of a plurality of first capacitor structures, which are composed of a first emitter plate and a first receiver plate. A plurality of the first emitter plates and a plurality of the first receiver plates are laid on the first surface, and any two first emitter plates are spaced apart, and any two first receiver plates are spaced apart.

5. The touch position detection module according to claim 1 or 2, characterized in that: The pressure detection module is composed of a plurality of second capacitor structures, and the second capacitor structure is composed of two second emitter plates and two second receiver plates; One of the second emitter plates and one of the second receiving plates are arranged in parallel in the first edge area of ​​the second surface to form a first pressure detection sub-capacitor; another second emitter plate and another second receiving plate are arranged in parallel in the second edge area of ​​the second surface to form a second pressure detection sub-capacitor; the first edge area and the second edge area correspond to opposite sides of the second surface.

6. The touch position detection module according to claim 5, characterized in that: When the force is generated by the user's finger touching, the first pressure detection sub-capacitor generates a first sub-capacitor signal, and the second pressure detection sub-capacitor generates a second sub-capacitor signal. The processor obtains second position information based on the first sub-capacitor signal and the second sub-capacitor signal.

7. An electronic device, characterized in that: The invention comprises: a shell and a touch panel arranged on the shell, wherein the touch panel comprises the touch position detection module according to any one of claims 1 to 6.

8. A touch position detection method, characterized in that: Applied to the touch position detection module as claimed in any one of claims 1 to 6, the method comprises: Determine first position information according to a first capacitance signal generated by a touch detection module; Determine second position information according to a second capacitance signal generated by the pressure detection module; The touch position of the user's finger is determined according to the first position information and the second position information.

9. The touch position detection method according to claim 8, characterized in that: The determining the touch position of the user's finger according to the first position information and the second position information includes: Determine a first weight coefficient corresponding to the first position information and a second weight coefficient corresponding to the second position information according to the first capacitance signal; The touch position of the user's finger is determined by calculation using the first position information, the first weight coefficient, the second position information, and the second weight coefficient.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the touch position detection method according to claim 8 or 9 is implemented.

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