Touch panel, touch screen and electronic equipment

Abstract

According to the touch panel, the touch screen and the electronic equipment provided by the embodiment of the invention, the multiplexing circuit is additionally arranged on the touch panel, and the N third touch channels are additionally arranged on the second electrode layer of the touch panel, so that the touch panel can perform capacitance detection and pressure detection by multiplexing touch signals in a time division manner; switching of capacitance detection and pressure detection of the touch panel is achieved, and the underwater touch performance of the touch panel is improved.

Description

Technical Field

[0001] This application relates to the technical field of terminals, and particularly to a touch panel, a touch screen and an electronic device. Background Art

[0002] With the continuous development of terminal technologies, users' demand for the waterproof function of wearable or portable electronic devices has increased. Among them, users' demand for touch operations of electronic devices in an underwater environment is also growing, such as the display, photography, etc. of smart watches or mobile phones when swimming or diving.

[0003] Most of the existing touch screens of electronic devices are capacitive touch screens, which can identify users' operations by sensing the capacitance with the user's finger. When the electronic device is immersed in water, since water is a conductor, it is unable to sense the capacitance of the finger, resulting in problems such as the failure of the touch function or incorrect touch detection, and the touch performance of the electronic device drops significantly. Summary of the Invention

[0004] This application provides a touch panel, a touch screen and an electronic device. By adding a multiplexing circuit to the touch panel and adding N third touch channels to the second electrode layer of the touch panel, the touch panel can time-division multiplex touch signals for capacitance detection or pressure sensing detection, realizing the switching between capacitance detection and pressure sensing detection of the touch panel and improving the underwater touch performance of the touch panel.

[0005] In a first aspect, this application provides a touch panel, which includes: a first electrode layer, a second electrode layer and N multiplexing circuits. The first electrode layer and the second electrode layer are stacked; the first electrode layer includes N first touch channels arranged along a first direction and M second touch channels arranged along a second direction; each first touch channel includes a plurality of first touch electrodes connected in series; each second touch channel includes a plurality of second touch electrodes connected in series; N and M are both positive integers not less than 1; the first direction and the second direction intersect; the second electrode layer includes N third touch channels arranged at positions corresponding to the N first touch channels, and the N third touch channels are arranged along the first direction; each third touch channel includes a plurality of third touch electrodes connected in series; the i-th multiplexing circuit among the N multiplexing circuits is used to select a touch channel connected to the output end of the touch chip from the i-th first touch channel among the N first touch channels and the i-th third touch channel among the N third touch channels, and i is a positive integer not greater than N.

[0006] In the embodiments of the present application, the touch panel can add a multiplexing circuit and add N third touch channels to the second electrode layer of the touch panel, enabling the touch panel to multiplex touch signals for capacitance detection or pressure sensing detection in a time-division manner, realizing the switching between capacitance detection and pressure sensing detection of the touch panel, and improving the underwater touch performance of the touch panel.

[0007] Combined with the first aspect, in a possible implementation manner, the second electrode layer further includes a plurality of bridges for connecting the plurality of first touch electrodes in series.

[0008] In the above embodiment, connecting the first touch electrodes through the bridges provided in the second electrode layer can prevent the first touch channel and the second touch channel from being short-circuited in the first electrode layer.

[0009] Combined with the first aspect, in a possible implementation manner, the plurality of first touch electrodes are arranged at equal intervals, the plurality of second touch electrodes are arranged at equal intervals, and the plurality of third touch electrodes are arranged at equal intervals.

[0010] In the above embodiment, arranging the touch electrodes at equal intervals can improve the accuracy of the touch panel in detecting the position where the user's touch operation is located.

[0011] Combined with the first aspect, in a possible implementation manner, the i-th multiplexing circuit includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube. The first ends of the first switching tube and the third switching tube are both connected to the i-th first touch channel. The first ends of the fourth switching tube and the second switching tube are both connected to the i-th third touch channel. The second ends of the first switching tube and the second switching tube are both used to receive touch signals. The second ends of the fourth switching tube and the third switching tube are both grounded. The control ends of the first switching tube and the fourth switching tube are both used to receive a first switching signal or a third switching signal. The control ends of the second switching tube and the third switching tube are both used to receive a second switching signal or a fourth switching signal. The first switching signal is used to control the conduction of the first switching tube and the fourth switching tube. The third switching signal is used to control the turn-off of the first switching tube and the fourth switching tube. The second switching signal is used to control the turn-off of the second switching tube and the third switching tube. The fourth switching signal is used to control the conduction of the second switching tube and the third switching tube.

[0012] Combined with the first aspect, in a possible implementation manner, the first ends of the first switching tube and the third switching tube are both connected to both ends of the i-th first touch channel; and / or, the first ends of the fourth switching tube and the second switching tube Q2 are both connected to both ends of the i-th third touch channel.

[0013] For the above touch panel, the input touch signal (scanning signal) can be connected to both ends of the first touch channel and / or the third touch channel, improving the stability of the signal received by the touch channel.

[0014] Combined with the first aspect, in a possible implementation, the touch panel further includes a touch chip, the touch chip includes N output terminals and M input terminals, the N output terminals are used to connect to the input terminals of N multiplexing circuits, and the M input terminals are used to connect to M second touch channels. The input terminal of the i-th multiplexing circuit is the common terminal of the second terminal of the first switching tube and the second terminal of the second switching tube.

[0015] For the above touch panel, when adding N third touch channels, the touch chip does not need to add N output terminals to connect thereto. Instead, the multiplexing circuit is connected to realize the multiplexing of the N output terminals of the touch chip. The touch chip can send touch signals to N first touch channels or N third touch channels through the N output terminals, and receive the sensing signals of the M second touch channels through the M input terminals, and determine the position where the user's touch operation is located according to the change of the signals of the received second touch channels.

[0016] Combined with the first aspect, in a possible implementation, the touch chip further includes a first control terminal and a second control terminal. The first control terminal of the touch chip is used to connect to the first control terminal of each multiplexing circuit. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switching tube and the control terminal of the fourth switching tube. The second control terminal of the touch chip is used to connect to the second control terminal of each multiplexing circuit. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switching tube and the control terminal of the third switching tube.

[0017] The touch chip is further configured to send a first switching signal to the first control terminal of the touch chip and a second switching signal to the second control terminal of the touch chip when receiving a first instruction for indicating capacitance detection; or, the touch chip is further configured to send a third switching signal to the first control terminal of the touch chip and a fourth switching signal to the second control terminal of the touch chip when receiving a second instruction for indicating pressure sensing detection.

[0018] For the above touch panel, the touch chip controls the switching of N first touch channels or N third touch channels by N multiplexing circuits, without adding a new chip, with higher integration and lower manufacturing cost.

[0019] In combination with the first aspect, in a possible implementation manner, the touch panel further includes a switch chip, the switch chip includes a first end and a second end, the first end of the switch chip is used to connect the first control end of each multiplexing circuit, and the first control end of the i-th multiplexing circuit is the common end of the control end of the first switch tube and the control end of the fourth switch tube; the second end of the switch chip is used to connect the second control end of each multiplexing circuit, and the second control end of the i-th multiplexing circuit is the common end of the control end of the second switch tube and the control end of the third switch tube;

[0020] The switch chip is further configured to send a first switch signal to the first end of the switch chip and a second switch signal to the second end when receiving a first instruction for indicating capacitance detection; or, the touch chip is further configured to send a third switch signal to the first end of the switch chip and a fourth switch signal to the second end when receiving a second instruction for indicating pressure sensing detection.

[0021] For the above touch panel, a switch chip can be added, and the switch chip controls the switching of the N multiplexing circuits to conduct the N first touch channels or the N third touch channels, without the need to improve the original touch chip.

[0022] In a second aspect, the present application provides a touch screen, which includes: a touch panel and N multiplexing circuits, the touch panel includes a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer are stacked;

[0023] The first electrode layer includes N first touch channels arranged along a first direction and M second touch channels arranged along a second direction; each first touch channel includes a plurality of first touch electrodes, and the plurality of first touch electrodes are connected in series; each second touch channel includes a plurality of second touch electrodes, and the plurality of second touch electrodes are connected in series; N and M are both positive integers not less than 1; the first direction and the second direction intersect each other;

[0024] The second electrode layer includes N third touch channels arranged at positions corresponding to the N first touch channels, and the N third touch channels are arranged along the first direction; each third touch channel includes a plurality of third touch electrodes, and the plurality of third touch electrodes are connected in series;

[0025] The i-th multiplexing circuit in the N multiplexing circuits is configured to select a touch channel to be connected to the output end of the touch chip from the i-th first touch channel among the N first touch channels and the i-th third touch channel among the N third touch channels, where i is a positive integer not greater than N.

[0026] In the embodiments of the present application, the touch panel can add N third touch channels to the second electrode layer of the touch panel, enabling the touch panel to perform capacitance detection or pressure sensing detection, and reducing the manufacturing cost of a touch panel with multiple detection functions. By adding N multiplexing circuits to time-division multiplex the touch signals, the touch panel can perform capacitance detection or pressure sensing detection, realizing the switching of the touch panel between capacitance detection and pressure sensing detection, and improving the underwater touch performance of the touch panel.

[0027] Combined with the second aspect, in a possible implementation manner, the touch screen includes a display module for displaying images and information; the display module includes a substrate and a circuit layer located on the substrate, and the circuit layer includes a driving circuit and N multiplexing circuits.

[0028] Combined with the second aspect, in a possible implementation manner, the second electrode layer further includes a plurality of bridges for connecting the above-mentioned plurality of first touch electrodes in series.

[0029] In the above embodiments, connecting the first touch electrodes by setting bridges can prevent the first touch channel and the second touch channel from being short-circuited in the first electrode layer.

[0030] Combined with the second aspect, in a possible implementation manner, the above-mentioned plurality of first touch electrodes are arranged at equal intervals, the above-mentioned plurality of second touch electrodes are arranged at equal intervals, and the above-mentioned plurality of third touch electrodes are arranged at equal intervals.

[0031] In the above embodiments, arranging the touch electrodes at equal intervals can increase the accuracy of the touch panel in detecting the position where the user's touch operation is located.

[0032] Combined with the second aspect, in a possible implementation manner, the i-th multiplexing circuit includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube. The first ends of the first switching tube and the third switching tube are both connected to the i-th first touch channel, and the first ends of the fourth switching tube and the second switching tube are both connected to the i-th third touch channel; the second ends of the first switching tube and the second switching tube are both used to receive touch signals; the second ends of the fourth switching tube and the third switching tube are both grounded, and the control ends of the first switching tube and the fourth switching tube are both used to receive a first switching signal or a third switching signal; the control ends of the second switching tube and the third switching tube are both used to receive a second switching signal or a fourth switching signal; the first switching signal is used to control the conduction of the first switching tube and the fourth switching tube, the second switching signal is used to control the turning off of the first switching tube and the fourth switching tube, the second switching signal is used to control the turning off of the second switching tube and the third switching tube, and the fourth switching signal is used to control the conduction of the second switching tube and the third switching tube.

[0033] In combination with the second aspect, in a possible implementation, the first ends of the first switch transistor and the third switch transistor are both connected to both ends of the i-th first touch channel; and / or, the first ends of the fourth switch transistor and the second switch transistor Q2 are both connected to both ends of the i-th third touch channel.

[0034] In the above embodiment, the multiplexing circuit can be connected to the first touch channel and / or the third touch channel in another connection manner, improving the stability of the signals received by the touch channels.

[0035] In combination with the second aspect, in a possible implementation, the touch panel further includes a touch chip, the touch chip includes N output terminals and M input terminals, the N output terminals are used to connect to the input terminals of N multiplexing circuits, the M input terminals are used to connect to M second touch channels, and the input terminal of the i-th multiplexing circuit is the common terminal of the second end of the first switch transistor and the second end of the second switch transistor.

[0036] In the above touch screen, when N third touch channels are added to the touch panel in the touch screen, the touch chip does not need to add N output terminals to connect thereto. Instead, the N output terminals of the touch chip are multiplexed by connecting the multiplexing circuits. The touch chip can send touch signals to N first touch channels or N third touch channels through the N output terminals, and receive the sensing signals of the M second touch channels through the M input terminals, and determine the position where the user's touch operation is located according to the change of the signals of the received touch channels.

[0037] In combination with the second aspect, in a possible implementation, the touch chip further includes a first control terminal and a second control terminal. The first control terminal of the touch chip is used to connect to the first control terminal of each multiplexing circuit. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switch transistor and the control terminal of the fourth switch transistor. The second control terminal of the touch chip is used to connect to the second control terminal of each multiplexing circuit. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switch transistor and the control terminal of the third switch transistor.

[0038] The touch chip is further configured to send a first switch signal to the first control terminal of the touch chip and send a second switch signal to the second control terminal of the touch chip when receiving a first instruction for indicating capacitance detection; or, the touch chip is further configured to send a third switch signal to the first control terminal of the touch chip and send a fourth switch signal to the second control terminal of the touch chip when receiving a second instruction for indicating pressure sensing detection.

[0039] In the above touch screen, the touch chip controls the switching of the N multiplexing circuits to turn on the N first touch channels or the N third touch channels, without adding a new chip, reducing the manufacturing cost.

[0040] In combination with the second aspect, in a possible implementation, the touch panel further includes a switch chip, the switch chip includes a first end and a second end, the first end of the switch chip is used to connect the first control end of each multiplexing circuit, and the first control end of the i-th multiplexing circuit is the common end of the control end of the first switch transistor and the control end of the fourth switch transistor; the second end of the switch chip is used to connect the second control end of each multiplexing circuit, and the second control end of the i-th multiplexing circuit is the common end of the control end of the second switch transistor and the control end of the third switch transistor;

[0041] The switch chip is further configured to send a first switch signal to the first end of the switch chip and a second switch signal to the second end when receiving a first instruction for indicating capacitance detection; and / or, the touch chip is further configured to send a third switch signal to the first end of the switch chip and a fourth switch signal to the second end when receiving a second instruction for indicating pressure sensing detection.

[0042] For the above touch screen, a switch chip can be added, and the switch chip controls the switching of the N first touch channels or the N third touch channels conducted by the N multiplexing circuits, without the need to improve the original touch chip.

[0043] In a third aspect, the present application provides an electronic device, which includes any possible touch panel in the first aspect or any possible touch screen in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0045] Figure 1 is a schematic structural diagram of a touch screen of an electronic device provided by an embodiment of the present application;

[0046] Figure 2 is a schematic cross-sectional view of a touch screen provided by an embodiment of the present application;

[0047] Figure 3 is a schematic structural diagram of a touch panel provided by an embodiment of the present application;

[0048] Figure 4 is an example diagram of a MUX circuit and its connection to the first touch channel and the third touch channel provided by an embodiment of the present application;

[0049] Figure 5It is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0050] Figure 6 It is a schematic diagram of signal changes of a MUX circuit provided by an embodiment of the present application;

[0051] Figure 7 It is another example diagram of a MUX circuit provided by an embodiment of the present application and its connection to the first touch channel and the third touch channel;

[0052] Figure 8 It is a schematic wiring structure diagram of a touch screen provided by an embodiment of the present application;

[0053] Figure 9A 、 Figure 9B 、 Figure 9C It is a schematic wiring structure diagram of a signal line provided by an embodiment of the present application;

[0054] Figure 10 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0055] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner.

[0056] In the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" refers to two or more. For example, a plurality of nodes refers to two or more nodes. "At least one" refers to any quantity, for example, one, two or more.

[0057] "A and / or B" can be only A, only B, or include A and B. "At least one of A, B, and C" can be only A, only B, only C, or include A and B, include B and C, include A and C, or include A, B, and C. The terms "first", "second", "third", "fourth", etc. in the present application are only used to distinguish different objects, and are not used to indicate the priority or importance of the objects.

[0058] In the embodiments of the present application, "connection" refers to electrical connection, and the connection of two electrical components can be a direct or indirect connection between the two electrical components. For example, when A is connected to B, it can be either a direct connection between A and B or an indirect connection between A and B through one or more other electrical components. For example, when A is connected to B, it can also be a direct connection between A and C, a direct connection between C and B, and A and B are connected through C.

[0059] When a finger touches the touch screen, it will cause a change in the capacitance of the touch electrodes in the touch panel, and thus the position where the user's touch operation is located can be determined. However, in an underwater environment, there are problems of touch function failure or touch detection error in the touch screen. Due to the conductivity of water, the touch panel cannot sense the capacitance of the finger, resulting in a significant decline in the touch performance of the touch screen. If you want to add functions such as waterproofing and underwater touch to the touch screen, you need to increase the number of channels of the touch chip. However, due to the limited number of channels in the existing touch chips, the demand for increasing the number of channels cannot be met. In addition, the cascade synchronization control and high cost problems brought about by cascading multiple touch chips greatly limit the overall improvement of the touch screen performance. In addition, if multiple touch chips are cascaded, the touch screen needs to add an additional switch chip to control the touch signals sent by the touch chips. As the number of channels required by the switch chip increases, the flexible printed circuit board (FPCB) needs to have more circuit lines to connect each channel. This leads to an increase in the complexity of FPCB design and manufacturing, and the cost of FPCB increases sharply.

[0060] To solve some or all of the above problems, the embodiments of the present application provide a touch panel and a touch screen. The touch panel includes at least two electrode layers. The first electrode layer includes a first touch channel and a second touch channel that intersect vertically and horizontally. By adding a third touch channel for pressure sensing at the position of the second electrode layer of the touch panel corresponding to the first touch channel, and adding a multiplexing circuit (also called a MUX circuit) between the touch chip and the touch channel, the MUX circuit is electrically connected to the first touch channel and the third touch channel, realizing time-division multiplexing of touch signals to achieve the switching of touch functions for capacitance sensing and pressure sensing.

[0061] Furthermore, the number of the first touch channels in the touch panel is the same as the number of the third touch channels. Through the MUX circuit, the touch chip does not need to additionally increase the output end of the third touch channel for connection, and can achieve low-cost preparation and maximum compatibility with the existing process without reducing the reporting rate and sampling speed of a single touch chip.

[0062] It should be noted that the embodiments of the present application are described with a mutual capacitance detection touch panel. It should be understood that the touch panel provided by the embodiments of the present application can also be other types, such as a self-capacitance detection touch panel. The embodiments of the present application do not limit this.

[0063] First, an exemplary description is given of a touch screen provided by the present application.

[0064] Figure 1Schematic diagram of the structure of a touch screen 10 of an electronic device provided by an embodiment of the present application. Figure 2 Cross-sectional schematic diagram of a touch screen 10 provided by an embodiment of the present application.

[0065] The electronic device may be a portable terminal device equipped with or other operating systems, such as mobile phones, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, ultra-mobile personal computers (UMPCs), netbooks, as well as cellular phones, personal digital assistants (PDAs), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices, and / or smart city devices, and so on.

[0066] As Figure 1 shown, the touch screen 10 may include a protective layer 11, a touch panel 12, a display module 13, and a substrate 14 that are sequentially stacked. Among them, the touch panel 12 may include a first electrode layer 121 and a second electrode layer 122.

[0067] The protective layer 11 is used to protect the touch screen 10. The protective layer 11 may be an inorganic transparent insulating material such as soda-lime glass or quartz glass, or an organic insulating transparent material such as polycarbonate (PC), polyether sulfone (PES), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polymethyl methacrylate (PMMA), etc.

[0068] The substrate 14 is used to provide structural support and protect components such as the touch panel 12 and the display module 13 from being damaged. The substrate 14 may be a single-layer structure or a multi-layer structure, such as an insulating material layer of resin, glass, etc., or include a metal layer and an insulating layer.

[0069] The display module 13 may include electrical components such as thin film transistors (TFTs) for displaying images and information of the electronic device. The electronic device may send a driving signal to the display module 13 through a chip such as a display driver integrated circuit (DDIC) or a touch and display driver integration (TDDI) chip to display an image.

[0070] The electronic device may detect a user's touch operation through the touch panel 12.

[0071] The touch panel 12 and the display module 13 may be independently arranged or integrated into one body to form a touch screen.

[0072] Figure 3 FIG. is a schematic structural diagram of a touch panel 12 provided by an embodiment of the present application. The touch panel 12 includes a first electrode layer 121, a second electrode layer 122, and N multiplexing circuits ( Figure 2 and Figure 3 not shown in FIG.), and the first electrode layer 121 and the second electrode layer 122 are stacked.

[0073] In some embodiments, the first electrode layer 121 and the second electrode layer 122 may be adhered through materials such as OCA optical glue or water glue, without gaps and air. The materials used for adhesion are not limited in the embodiments of the present application.

[0074] Optionally, as Figure 2 shown, the first electrode layer 121 is disposed on the surface of the second electrode layer 122 facing away from the display module 13. The first electrode layer 121 is in contact with the protective layer 11.

[0075] Figure 3 FIG. (A) in FIG. shows the arrangement structure of the touch electrodes in the first electrode layer 121 of the touch panel 12. The first electrode layer 121 includes N first touch channels arranged along a first direction, respectively denoted as TX1_1, TX1_2, TX1_3,..., TX1_N. Each first touch channel includes a plurality of first touch electrodes (i.e., the first touch electrodes represented by white rectangles), and the plurality of first touch electrodes are connected in series. Optionally, adjacent first touch electrodes in each first touch channel may be connected in series through vias and bridges 1221 disposed in the second electrode layer 122. The first electrode layer 121 further includes M second touch channels arranged along a second direction, respectively denoted as RX_1, RX_2, RX_3,..., RX_M. Each second touch channel includes a plurality of second touch electrodes, and the plurality of second touch electrodes are connected in series. The first direction and the second direction intersect each other. N and M are positive integers not less than 1.

[0076] Among them, N first touch channels and M second touch channels are arranged in a cross pattern and are insulated from each other. It should be understood that there are gaps between different first touch channels, between different second touch channels, and between the first touch channels and the second touch channels for insulation.

[0077] Optionally, the N first touch channels are parallel to each other and arranged at equal intervals along a first direction; the M second touch channels are parallel to each other and arranged at equal intervals along a second direction.

[0078] Optionally, the first touch electrodes in each first touch channel are arranged at equal intervals, and the second touch electrodes in each second touch channel are arranged at equal intervals.

[0079] Optionally, the first direction and the second direction are perpendicular or substantially perpendicular.

[0080] Figure 3 Figure (B) in [reference] shows the arrangement structure of the touch electrodes in the second electrode layer 122 of the touch panel 12. The second electrode layer 122 includes N third touch channels arranged at positions corresponding to the N first touch channels, respectively denoted as TX2_1, TX2_2, TX2_3,..., TX2_N. Each third touch channel includes a plurality of third touch electrodes arranged along the first direction, and the plurality of third touch electrodes are connected in series.

[0081] It can be understood that the N first touch channels are respectively parallel to the N third touch channels at corresponding positions. Here, "corresponding positions" can mean that the i-th third touch channel among the N third touch channels is located at the position where the i-th first touch channel among the N first touch channels is mapped in the second electrode layer 122.

[0082] Moreover, since the first touch channel connects its multiple first touch electrodes through the bridging 1221 in the second electrode layer 122, the second electrode layer 122 also includes the bridging 1221. The bridging 1221 is used to connect two adjacent first touch electrodes in the first touch channel to ensure that there is no problem of short circuit between the first touch channel and the second touch channel in the first electrode layer 121 due to their mutual crossing. There is a gap between the bridging 1221 and the third touch electrode, and it can be arranged between two adjacent third touch electrodes in the third touch channel.

[0083] Figure 3 Figure (C) in [reference] shows a top view of the touch panel 12. Figure 3(D) in it shows a schematic diagram of the overall structure of the touch panel 12. In some embodiments, the third touch electrodes in the third touch channel are disposed at positions opposite to the first touch electrodes in the first touch channel in the second electrode layer 122. That is, TX1_1 is aligned with TX2_1, TX1_2 is aligned with TX2_2, TX1_3 is aligned with TX2_3, and so on. TX1_N and TX2_N are correspondingly arranged up and down.

[0084] The bridge 1221 is disposed between two adjacent third touch electrodes in the third touch channel. The conductive film 1222 for connecting two adjacent third touch electrodes in series can be disposed on both sides of the bridge 1221.

[0085] In some other embodiments, the bridge 1221 and the third touch channel can be disposed in different layers. For example, the touch panel further includes a third electrode layer, which can be disposed between the first electrode layer and the second electrode layer, and the bridge 1221 is disposed on the third electrode layer.

[0086] In some embodiments, the above Figure 3 In the touch panel 12 shown, the N first touch channels and the M second touch channels form a capacitance sensing module, and the position of the user operation can be identified based on the capacitance changes of the first touch channel and the second touch channel caused by the user's touch operation. The N third touch channels and the M second touch channels form a pressure sensing module, and the capacitance changes of the third touch channel and the second touch channel can be caused by the deformation resulting from the user's pressing operation. The electronic device can determine the touch channel in the touch panel 12 where the capacitance change occurs based on the touch chip, and further determine the position where the user's touch operation is located.

[0087] It should be understood that Figure 1 or Figure 2 The structure diagram of the touch panel 12 shown is only an example, and the fitting and connection manners of the detailed first electrode layer 121 and the second electrode layer 122 are not drawn. The embodiments of the present application do not limit the fitting and connection manners of the first electrode layer 121 and the second electrode layer 122.

[0088] In some embodiments, the N first touch channels correspond one-to-one with the N third touch channels, and the N multiplexing circuits correspond one-to-one with the N first touch channels; the N multiplexing circuits correspond one-to-one with the N third touch channels; each multiplexing circuit is used to select the touch channel to be connected to the output end of the touch chip from the first touch channel corresponding to each multiplexing circuit and the third touch channel corresponding to each multiplexing circuit.

[0089] That is to say, the i-th MUX circuit among the N MUX circuits is used to select a touch channel to be connected to the output end of the touch chip from the i-th first touch channel TX1_i among the N first touch channels and the i-th third touch channel TX2_i among the N third touch channels. i is a positive integer not greater than N.

[0090] Figure 4 An exemplary diagram showing a MUX circuit provided by an embodiment of the present application and an example of its connection to the first touch channel and the third touch channel is shown.

[0091] As Figure 4 shown, the above-mentioned N MUX circuits include MUX1 circuit, MUX2 circuit, MUX3 circuit,..., MUXN circuit. Taking the MUX1 circuit as an example for an exemplary description of the MUX circuit, this circuit includes a first switching transistor Q1, a second switching transistor Q2, a third switching transistor Q3, and a fourth switching transistor Q4. The first ends of the first switching transistor Q1 and the third switching transistor Q3 are both connected to the first touch channel TX1_1, and the first ends of the fourth switching transistor Q4 and the second switching transistor Q2 are both connected to the third touch channel TX2_1. The second ends of the first switching transistor Q1 and the second switching transistor Q2 are both used to receive touch signals, and the second ends of the fourth switching transistor Q4 and the third switching transistor Q3 are both grounded. The control ends of the first switching transistor Q1 and the fourth switching transistor Q are both used to receive a first switching signal or a third switching signal, and the control ends of the second switching transistor Q2 and the third switching transistor Q3 are both used to receive a second switching signal or a fourth switching signal.

[0092] It should be understood that each MUX circuit is the same, but the first touch channels and the third touch channels it is connected to are different. The first touch channel and the third touch channel to be connected by the i-th MUX circuit (MUXi circuit) among the N MUX circuits are TX1_i and TX2_i respectively.

[0093] As Figure 5 shown, a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application is shown. The electronic device 100 may include a processor and a touch screen. The touch screen may be the touch screen shown above Figure 1 or Figure 2 shown. In addition to including the above-mentioned protective layer 11, touch panel 12, display module 13, and substrate 14, the touch screen may further include a DDIC and a touch chip.

[0094] The processor is communicatively connected to the touch chip and the DDIC.

[0095] The touch panel 12 includes a first electrode layer 121, a second electrode layer 122, and N MUX circuits. The first electrode layer 121 includes N first touch channels and M second touch channels, and the second electrode layer 122 includes N third touch channels.

[0096] The first output terminal of the i-th MUX circuit among the N MUX circuits is used to connect to the i-th first touch channel among the N first touch channels. The second output terminal of the i-th multiplexing circuit is used to connect to the i-th third touch channel among the N third touch channels. The input terminal of the i-th multiplexing circuit is used to connect to the touch chip.

[0097] The first output terminal of the i-th multiplexing circuit is the common terminal of the first terminal of the first switching transistor and the first terminal of the third switching transistor. The second output terminal of the i-th multiplexing circuit is the common terminal of the first terminal of the fourth switching transistor and the first terminal of the second switching transistor. The input terminal of the i-th multiplexing circuit is the common terminal of the second terminal of the first switching transistor and the second terminal of the second switching transistor.

[0098] The touch chip includes N output terminals (i.e., TX1, TX2,..., TXN) and M input terminals (i.e., RX1, RX2,..., RXM). Among them, the N output terminals are used to connect to the input terminals of the N MUX circuits respectively, that is, the common terminal of the second terminal of the first switching transistor Q1 and the second terminal of the second switching transistor Q2 in the MUX circuit shown above, so as to send touch signals (also called scanning signals) to the N first touch channels or the N third touch channels. Figure 4 The M input terminals are used to connect to M second touch channels respectively, that is, RX_1, RX_2, RX_3,..., RX_M, so as to receive the induction signals of the M second touch channels.

[0099] Exemplarily, the i-th output terminal among the N output terminals is used to connect to the input terminal of the MUXi circuit.

[0100] Exemplarily, the i-th input terminal among the M input terminals is used to connect to the second touch channel RX_i.

[0101] The touch chip is used to output touch signals to the N output terminals in sequence at intervals of the first time period.

[0102] The touch chip is used to output touch signals to the N output terminals in sequence at intervals of the first time period.

[0103] The processor is used to send a first instruction for indicating to perform capacitance detection to the touch chip when in the capacitance detection mode or when the touch mode is switched to the capacitance detection mode.

[0104] The touch chip further includes a first control terminal and a second control terminal. The first control terminal of the touch chip is used to connect to the first control terminal of each MUX circuit. The second control terminal of the touch chip is used to connect to the second control terminal of each MUX circuit.

[0105] The touch chip is used to respond to the first instruction and send it to the first control terminal of each MUX circuit, that is, the above-mentioned Figure 4A first switching signal is sent to the common terminal TC of the control terminal of the first switching transistor Q1 and the control terminal of the fourth switching transistor Q4 in each of the MUX circuits shown, and to the second control terminal of each MUX circuit, that is, the above-mentioned Figure 4 A second switching signal is sent to the common terminal TF of the control terminal of the second switching transistor Q2 and the control terminal of the third switching transistor Q3 in each of the MUX circuits shown. Wherein, the first switching signal is used to turn on the first switching transistor Q1 and the fourth switching transistor Q4, that is, to turn on the first end and the second end of the first switching transistor Q1, and to turn on the first end and the second end of the fourth switching transistor Q4. The second switching signal is used to turn off the second switching transistor Q2 and the third switching transistor Q3, that is, the first end and the second end of the second switching transistor Q2 are not turned on, and the first end and the second end of the third switching transistor Q3 are not turned on.

[0106] Figure 6 Exemplarily shown are the changes in signals on the above-mentioned common terminal TC, common terminal TF, N output terminals of the touch chip, the first touch channel, and the third touch channel when the touch panel uses capacitance detection and pressure sensing detection.

[0107] Regardless of which touch detection method the touch panel uses, the touch chip outputs touch signals, which are pulse signals, to its N output terminals TX1, TX2,..., TXN. The touch chip scans N first touch electrodes or N third touch electrodes within one cycle, and the phases of the touch signals on the N output terminals are different.

[0108] When the touch panel uses capacitance detection, the touch chip sends a first switching signal, which is a high-level signal, to the common terminal TC of each MUX circuit in response to a first instruction, and sends a second switching signal, which is a low-level signal, to the common terminal TF of each MUX circuit. At this time, the first switching transistor Q1 and the fourth switching transistor Q4 are turned on, and the second switching transistor Q2 and the third switching transistor Q3 are turned off. At this time, the N output terminals TX1, TX2,..., TXN are respectively connected to the N first touch channels TX1_1, TX1_1, TX1_2,..., TX1_N. Therefore, the signals on the N first touch channels TX1_1, TX1_1, TX1_2,..., TX1_N are the same as the signals on the N output terminals TX1, TX2,..., TXN. Figure 6 Only the signal on the first touch channel TX1_1 is exemplarily shown.

[0109] The processor is used to send a second instruction for instructing capacitance detection to the touch chip in the pressure sensing detection mode or when the touch mode is switched to the pressure sensing detection mode.

[0110] The touch chip is used to respond to the second instruction and send it to the first control terminal of each MUX circuit, that is, the above-mentioned Figure 4The common terminal TC of the control terminal of the first switching transistor Q1 and the control terminal of the fourth switching transistor Q4 in each of the illustrated MUX circuits transmits a third switching signal, and also transmits a fourth switching signal to the second control terminal of each MUX circuit, that is, the above-mentioned Figure 4 common terminal of the control terminal of the second switching transistor Q2 and the control terminal of the third switching transistor Q3 in each of the illustrated MUX circuits. Among them, the third switching signal is used to turn off the first switching transistor Q1 and the fourth switching transistor Q4, that is, the first end and the second end of the first switching transistor Q1 are not conducting, and the first end and the second end of the fourth switching transistor Q4 are not conducting. The second switching signal is used to turn on the second switching transistor Q2 and the third switching transistor Q3, that is, the first end and the second end of the second switching transistor Q2 are conducting, and the first end and the second end of the third switching transistor Q3 are conducting.

[0111] Exemplarily, when the touch panel uses pressure sensing detection, the touch chip transmits a third switching signal, which is a low-level signal, to the common terminal TC of each MUX circuit in response to the first instruction, and transmits a fourth switching signal, which is a high-level signal, to the common terminal TF of each MUX circuit. At this time, the first switching transistor Q1 and the fourth switching transistor Q4 are turned off, and the second switching transistor Q2 and the third switching transistor Q3 are turned on. At this time, the N output terminals TX1, TX2,..., TXN are respectively connected to the N third touch channels TX2_1, TX2_1, TX2_2,..., TX2_N. Therefore, the signals on the N third touch channels TX2_1, TX2_1, TX2_2,..., TX2_N are the same as the signals on the N output terminals TX1, TX2,..., TXN. Figure 6 Only exemplarily shows the signal on the third touch channel TX2_1.

[0112] The touch chip is further configured to receive the induction signals on the M second touch channels in real time through the M input terminals.

[0113] In some embodiments, the touch chip is configured to send touch signals to N output terminals, and send the touch signals to N first touch channels or N third touch channels through N MUX circuits in sequence. Meanwhile, the touch chip sequentially receives the induction signals of M second touch channels, obtains the mutual capacitance between the N first touch channels or N third touch channels and the M second touch channels, and determines the position where the user's touch operation is located by the first touch channels or third touch channels and the second touch channels that generate capacitance changes. Exemplarily, the touch chip sequentially sends touch signals to TX1_1, TX1_2, TX1_3, …, TX1_N. Meanwhile, the touch chip sequentially receives the induction signals received by RX_1, RX_2, RX_3, …, RX_M, and obtains the mutual capacitance of the coordinate points at the intersections of the first touch channels and the second touch channels. When a finger touches the touch screen, it will absorb a part of the touch signals received by the first touch channels in contact, resulting in a decrease in the capacitance of the first touch channels in contact, and further causing a decrease in the capacitance of the second touch channels that intersect with the first touch channels. Thus, the coordinate points where the mutual capacitance changes in the touch screen can be determined, and the position where the user's touch operation is located can be determined.

[0114] In some other embodiments, the electronic device 100 may further include a switch chip, which includes a first end and a second end. The first end of the switch chip is configured to connect to the first control end of each MUX circuit, and the second end of the switch chip is configured to connect to the second control end of each MUX circuit. At this time, when the processor is in the capacitance detection mode or when the touch mode is switched to the capacitance detection mode, the processor does not send a first instruction to the touch chip, but sends a first instruction for indicating capacitance detection to the switch chip.

[0115] At this time, the processor is configured to send a first instruction for indicating capacitance detection to the switch chip when in the capacitance detection mode or when the touch mode is switched to the capacitance detection mode.

[0116] The switch chip is configured to, in response to the first instruction, send a first switch signal to the first control end of each MUX circuit, that is, the common terminal TC of the control ends of the first switch transistor Q1 and the fourth switch transistor Q4 in each of the MUX circuits shown above, and send a second switch signal to the second control end of each MUX circuit, that is, the common terminal TF of the control ends of the second switch transistor Q2 and the third switch transistor Q3 in each of the MUX circuits shown above. Among them, the first switch signal is used to turn on the first switch transistor Q1 and the fourth switch transistor Q4, that is, turn on the first end and the second end of the first switch transistor Q1, and turn on the first end and the second end of the fourth switch transistor Q4. The second switch signal is used to turn off the second switch transistor Q2 and the third switch transistor Q3, that is, the first end and the second end of the second switch transistor Q2 are not turned on, and the first end and the second end of the third switch transistor Q3 are not turned on. Figure 4 shown in each of the MUX circuits above, and send a second switch signal to the second control end of each MUX circuit, that is, the common terminal TF of the control ends of the second switch transistor Q2 and the third switch transistor Q3 in each of the MUX circuits shown above. Figure 4 shown in each of the MUX circuits above. Among them, the first switch signal is used to turn on the first switch transistor Q1 and the fourth switch transistor Q4, that is, turn on the first end and the second end of the first switch transistor Q1, and turn on the first end and the second end of the fourth switch transistor Q4. The second switch signal is used to turn off the second switch transistor Q2 and the third switch transistor Q3, that is, the first end and the second end of the second switch transistor Q2 are not turned on, and the first end and the second end of the third switch transistor Q3 are not turned on.

[0117] Similarly, the processor is configured to send a second instruction for instructing the touch chip to perform capacitance detection when the processor is in the pressure detection mode or when the touch mode is switched to the pressure detection mode.

[0118] The switch chip is used to respond to the second instruction to the first control terminal of each MUX circuit, that is, the above Figure 4 The common terminal TC of the control terminal of the first switch tube Q1 and the control terminal of the fourth switch tube Q4 in each MUX circuit sends the third switch signal, and the second control terminal of each MUX circuit, that is, the above Figure 4 In each MUX circuit shown, the common terminal of the control terminal of the second switch Q2 and the control terminal of the third switch Q3 transmits a fourth switching signal. The third switching signal is used to turn off the first switch Q1 and the fourth switch Q4, that is, the first and second terminals of the first switch Q1 are not conductive, and the first and second terminals of the fourth switch Q4 are not conductive. The second switching signal is used to turn on the second switch Q2 and the third switch Q3, that is, the first and second terminals of the second switch Q2 are conductive, and the first and second terminals of the third switch Q3 are conductive.

[0119] The DDIC is used to send a display driving signal to the display module 13 to realize the display function of the touch screen.

[0120] It should be noted that the above Figure 4 The diagram shows an example of a single-receive and single-transmit MUX circuit connected to a touch channel. In some embodiments, the connection method of the MUX circuit connected to the touch channel can also be other, such as Figure 7 As shown, Figure 7 (A) is an example diagram of a connection method of a MUX circuit to a touch channel. Figure 7 (B) is another example diagram of how the MUX circuit is connected to the touch channel. The white rectangle represents the first touch channel, and the oblique rectangle represents the third touch channel. Take the first touch channel TX1_1 and the third touch channel TX2_1 as an example. When the MUX1 circuit is connected to the touch channel in Figure 7 As shown in (B), the first output end of the MUX1 circuit is connected to both ends of the first touch channel TX1_1 through a signal line, and the second output end of the MUX1 circuit is connected to both ends of the third touch channel TX2_1 through a signal line.

[0121] In some embodiments, the electronic device or processor can switch the touch screen to a capacitive detection mode or a pressure-sensitive detection mode by manually setting the detection mode, or it can automatically detect whether the electronic device is underwater and automatically switch the touch screen detection mode to a capacitive detection mode or a pressure-sensitive detection mode. The embodiments of the present application do not limit the switching method of the detection scheme.

[0122] The touch panel provided by the embodiment of the present application can multiplex the channels of the touch chip through the MUX circuit without changing the structure of the conventional touch panel and without reducing the reporting rate and sampling speed of the touch chip, realizing a touch panel with two touch functions and reducing the manufacturing cost of the touch panel with multiple touch functions.

[0123] Next, an exemplary description of the wiring scheme of the touch screen provided by the present application will be given.

[0124] First, an introduction to the wiring scheme of the commonly used touch screen will be given.

[0125] For distinction, the present application refers to the trace for connecting the first touch channel as the first trace, the trace for connecting the second touch channel as the second trace, and the trace for connecting the third touch channel as the third trace.

[0126] Figure 8 FIG. is a schematic diagram of the wiring structure of the traces on the touch screen 20 for connecting the first touch channel and the second touch channel without including N third touch channels provided by the embodiment of the present application.

[0127] Figure 8 In FIG. (A), a perspective view of the wiring of the first trace and the second trace is shown schematically. Figure 8 In FIG. (B), the positions of the DDIC and the touch chip are shown schematically. Among them, the touch screen 20 may include a touch panel 21 and a display module 22. The touch panel 21 includes a first touch channel and a second touch channel ( Figure 8 not shown). Each first trace on the touch panel 21 is electrically connected to each first touch channel, and each second trace is electrically connected to the second touch channel.

[0128] Before the bending area, the traces on the touch panel 21 for connecting the first touch channel and the second touch channel are connected to the bonding area (also called the Bonding area) of the FPCB and the display module 22 through vias and wiring. The DDIC can be soldered (or other connection methods) on the display module 22 and connected to the thin film transistor TFT on the display module 22 (not shown in the figure) for sending drive signals to control the display module 22 to display images. A touch chip can be provided on the FPCB. The touch chip can send touch signals and receive sensing signals, and transmit them to the first touch channel and the second touch channel on the touch panel 21 through traces and vias to detect the position where the user's touch operation is located.

[0129] Since the touch panel provided by this application has an additional third touch channel compared to a conventional touch panel, in order not to reduce the reporting rate and detection rate of the touch panel under limited space and the number of channels, this application adds three connection pins (Bonding pads) in the Bonding area to access the switching signals of the common terminal TC, the common terminal TF, and ground, and sets the MUX circuit in the routing area outside the touchable area (active area, AA) of the touch panel or in the spare part outside the bending area of the display module. The routing connecting the touch electrodes can be connected to the MUX circuit in the TFT driving layer of the display module through vias in the touch panel, and then access the Bonding area through the routing arranged on the TFT driving layer to achieve connection with the touch chip.

[0130] In some embodiments, the switching signals of the common terminal TC and the common terminal TF can be sent by the touch chip or by a switching chip arranged on the FPCB. The embodiments of this application do not limit this.

[0131] Figure 9A 、 Figure 9B 、 Figure 9C FIGS. are schematic diagrams showing the positions of several wirings and the MAUX circuit provided by the embodiments of this application.

[0132] Figure 9A In FIG. (A) therein is a schematic perspective view of the wiring of the first routing, the second routing, and the third routing. Figure 9A In FIG. (B) therein schematically shows the positions of the MUX circuit, the DDIC, and the touch chip. The touch screen 10 may include a touch panel 12 and a display module 13. The display module 13 includes a TFT driving layer. The MUX circuit can be arranged in the spare parts on the left and right sides under the bending area of the TFT driving layer. The display module 13 may include a substrate and a circuit layer located on the substrate. The circuit layer may include a driving circuit and N multiplexing circuits. Among them, the driving circuit can be used to provide current for the display module 13. The routing for connecting the first touch channel and the third touch channel in the touch panel 12 is connected to the MUX circuit in the TFT driving layer of the display module through vias, and then accesses the Bonding area through the routing arranged on the TFT driving layer to achieve connection with the touch chip. The routing of the second touch channel is connected to the TFT driving layer of the display module through vias, and then accesses the Bonding area through the routing arranged on the TFT driving layer to achieve connection with the touch chip.

[0133] The DDIC can be disposed on the display module 13 and connected to the thin film transistor (TFT) on the display module 13 (not shown in the figure), and is used to send drive signals to control the display module 13 to display images. The touch chip soldered on the FPCB can send touch signals to its N output terminals (TX1-N), receive induction signals through M receiving terminals (RX1-M), and send switching signals to the common terminal TC and the common terminal TF respectively.

[0134] Figure 9B Figure (A) in [reference] is a schematic perspective view of the wiring of another first trace, second trace, and third trace. Figure 9B Figure (B) in [reference] schematically illustrates the positions of another MUX circuit, DDIC, and touch chip. Part of the MUX circuit can be disposed in the vacant portion above the bending area on the touch panel 12, and part of the MUX circuit can be disposed in the vacant portion below the bending area of the TFT driving layer.

[0135] The traces in the touch panel 12 for connecting the first touch channel and the third touch channel can be partially connected to the MUX circuit disposed on the touch chip. After passing through the MUX circuit, 2 traces become 1 trace, and then through vias to connect to the TFT driving layer, and then through the traces disposed on the TFT driving layer to access the Bonding area to realize the connection with the touch chip; the other part of the traces connecting the first touch channel and the third touch channel are connected to the MUX circuit in the TFT driving layer of the display module through vias, and then through the traces disposed on the TFT driving layer to access the Bonding area to realize the connection with the touch chip. The traces of the second touch channel are connected to the TFT driving layer of the display module through vias, and then through the traces disposed on the TFT driving layer to access the Bonding area to realize the connection with the touch chip.

[0136] The DDIC can be disposed on the display module 13 and connected to the thin film transistor (TFT) on the display module 13 (not shown in the figure), and is used to send drive signals to control the display module 13 to display images. The touch chip soldered on the FPCB can send touch signals to its N output terminals (TX1-N), receive induction signals through M receiving terminals (RX1-M), and send switching signals to the common terminal TC and the common terminal TF respectively.

[0137] It should be noted that the MUX circuit can also be disposed in the vacant portion below the bending area on the touch panel 12 or in the vacant portion above the bending area of the TFT driving layer. The embodiment of the present application does not limit the position of the MUX circuit.

[0138] Figure 9C Figure (A) in [reference] is a schematic perspective view of the wiring of yet another first trace, second trace, and third trace. Figure 9CFigure (B) schematically illustrates the positions of another MUX circuit, a DDIC, and a touch chip. The DDIC can be integrated with the touch chip, i.e., TDDI. Similar to the above Figure 9A and Figure 9B , the MUX circuit can be disposed on the TFT driving layer, or partially disposed on the TFT driving layer and partially disposed on the touch panel 21. Figure 9C Taking the example where the MUX circuit is partially disposed on the TFT driving layer and partially disposed on the touch panel 21, the pins in the Bonding area remain unchanged, that is, there is no need to add three connection pins (Bonding pads) to access the switching signal of the common terminal TC, the switching signal of the common terminal TF, and the ground. The TDDI includes three connection pins (Bonding pads) to access the switching signal of the common terminal TC, the switching signal of the common terminal TF, and the ground. Different from the above Figure 9A and Figure 9B , the traces from the MUX circuit and the traces of the second touch channel are both connected to the TDDI.

[0139] The TDDI is also connected to the thin film transistor TFT on the display module 13 (not shown in the figure) for sending driving signals to control the display module 13 to display images. The TDDI can include N output terminals (TX1-N), M receiving terminals (RX1-M), a terminal for connecting to the common terminal TC, a terminal for connecting to the common terminal TF, and a ground terminal, so as to send touch signals to the N output terminals (TX1-N) respectively, receive induction signals through the M receiving terminals (RX1-M), and send switching signals to the common terminal TC and the common terminal TF respectively.

[0140] In some embodiments, the MUX circuit shown above Figure 9A , Figure 9B , Figure 9C can be located on the left and right sides as shown above Figure 9A , or on one side thereof, and can also be located on the upper and lower sides as shown above Figure 9B , Figure 9C , or on one side thereof, or can be in the FPCB. The embodiments of the present application do not limit the position and number of the MUX circuits.

[0141] It should be understood that Figure 9A , Figure 9B , Figure 9CThere is no distinction between the first trace, the second trace, and the third trace. It should be understood that the first trace and the third trace need to be connected to the MUX circuit. The third trace does not need to be connected to the MUX circuit and is directly connected to the input terminal of the touch chip. The first trace and the second trace in the first electrode layer can be distributed on both sides of the display area. The first trace is located on one side of the touch channel area (the area where the first touch channel and the second touch channel are located), and the second trace is located on the other side of the touch channel. The first trace and the second trace in the first electrode layer can extend to the circuit layer of the display module through vias to be electrically connected to the MUX circuit and the touch chip located in the circuit layer. Similarly, the third trace in the second electrode layer can be arranged on one side or both sides of the touch channel area (the area where the third touch channel is located). The third trace in the second electrode layer can also extend to the circuit layer of the display module through vias to be electrically connected to the MUX circuit and the touch chip located in the circuit layer.

[0142] It should also be understood that the position of the via can be before or after the bending area. Here, before the bending area means on the side of the bending area away from the FPCB, and after the bending area means on the side of the bending area away from the touch channel. The above Figure 9A 、 Figure 9B 、 Figure 9C exemplarily shows that each trace extends to the circuit layer through a via before the bending area. In some other embodiments, each trace can also extend to the circuit layer through a via before the bending area.

[0143] Next, the hardware architecture and device form of the electronic device involved in the present application will be introduced.

[0144] The electronic device can be a portable terminal device equipped with or other operating systems, such as mobile phones, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, ultra-mobile personal computers (UMPCs), netbooks, as well as cellular phones, personal digital assistants (PDAs), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices, and / or smart city devices, and so on.

[0145] Figure 10 shows a schematic structural diagram of the electronic device 100.

[0146] The electronic device 100 may include: a processor 110, an external memory interface 120, an internal memory 130, a universal serial bus (USB) interface, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headphone interface 170D, a sensor module 180, a camera 193, a display screen 194, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a touch sensor 180K, an ambient light sensor 180L, etc.

[0147] It can be understood that the structure illustrated in the embodiments of this application does not constitute a specific limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may include more or fewer components than those illustrated, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0148] The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0149] Among them, the controller may be the nerve center and command center of the electronic device 100. The controller may generate operation control signals according to the instruction operation code and timing signals to complete the control of fetching instructions and executing instructions.

[0150] A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. This memory may save the instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can directly call it from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0151] In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0152] The USB interface is an interface that complies with the USB standard specification. Specifically, it can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface can be used to connect a charger to charge the electronic device 100, and can also be used to transfer data between the electronic device 100 and peripheral devices. It can also be used to connect headphones to play audio through the headphones. This interface can also be used to connect other electronic devices, such as AR devices, etc.

[0153] It can be understood that the interface connection relationships between the modules illustrated in the embodiments of the present application are only illustrative descriptions and do not constitute a structural limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0154] The electronic device 100 realizes the display function through the GPU, the display screen 194, and the application processor, etc. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations and is used for graphics rendering. The processor 110 may include one or more GPUs, which execute program instructions to generate or change display information.

[0155] The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD). The display panel can also be made of an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a miniLED, a microLED, a micro-OLED, a quantum dot light-emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include one or N display screens 194, where N is a positive integer greater than 1.

[0156] The electronic device 100 can implement the shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, etc.

[0157] The ISP is used to process the data fed back by the camera 193. For example, when taking a photo, the shutter is opened, and light passes through the lens and is transmitted to the camera sensor. The light signal is converted into an electrical signal, and the camera sensor transmits the electrical signal to the ISP for processing and converts it into an image visible to the naked eye. The ISP can also optimize the noise and brightness of the image through algorithms. The ISP can also optimize parameters such as the exposure and color temperature of the shooting scene. In some embodiments, the ISP can be set in the camera 193.

[0158] The camera 193 is used to capture static images or videos. An object generates an optical image through the lens and projects it onto the sensor. The sensor can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The sensor converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in standard RGB, YUV, etc. formats. In some embodiments, the electronic device 100 may include one or N cameras 193, where N is a positive integer greater than 1.

[0159] The digital signal processor is used to process digital signals. In addition to processing digital image signals, it can also process other digital signals. For example, when the electronic device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy, etc.

[0160] The video codec is used to compress or decompress digital videos. The electronic device 100 can support one or more video codecs. In this way, the electronic device 100 can play or record videos in multiple coding formats, such as: Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

[0161] The NPU is a neural-network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission pattern between human brain neurons, it can quickly process input information and can also continuously self-learn. Through the NPU, applications such as intelligent cognition of the electronic device 100 can be realized, such as: image recognition, face recognition, speech recognition, text understanding, etc.

[0162] The internal memory 130 may include one or more random access memories (RAM) and one or more non-volatile memories (NVM).

[0163] The random access memory may include static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM, for example, the fifth-generation DDR SDRAM is generally called DDR5 SDRAM), etc.;

[0164] The non-volatile memory may include disk storage devices, flash memory.

[0165] Flash memory can be classified into NOR Flash, NAND Flash, 3D NAND Flash, etc. according to the operating principle, and can be classified into single-level cell (SLC), multi-level cell (MLC), triple-level cell (TLC), quad-level cell (QLC), etc. according to the number of potential levels of storage cells. According to the storage specification, it can be classified into universal flash storage (UFS), embedded multi media card (eMMC), etc.

[0166] The random access memory can be directly read and written by the processor 110, and can be used to store the operating system or executable programs (such as machine instructions) of other running programs, and can also be used to store data of users and application programs, etc.

[0167] The non-volatile memory can also store executable programs and data of users and application programs, etc., and can be pre-loaded into the random access memory for the processor 110 to directly read and write.

[0168] The external memory interface 120 can be used to connect to an external non-volatile memory to expand the storage capacity of the electronic device 100. The external non-volatile memory communicates with the processor 110 through the external memory interface 120 to implement the data storage function. For example, files such as music and videos are saved in the external non-volatile memory.

[0169] The electronic device 100 can implement audio functions through the audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, and the application processor, etc. For example, music playback, recording, etc.

[0170] The audio module 170 is used to convert digital audio information into an analog audio signal for output, and is also used to convert analog audio input into a digital audio signal. The audio module 170 can also be used for encoding and decoding audio signals. In some embodiments, the audio module 170 can be disposed in the processor 110, or some functional modules of the audio module 170 can be disposed in the processor 110.

[0171] The speaker 170A, also called the "loudspeaker", is used to convert an audio electrical signal into a sound signal. The electronic device 100 can listen to music or hands-free calls through the speaker 170A.

[0172] The receiver 170B, also known as the "earpiece", is used to convert audio electrical signals into sound signals. When the electronic device 100 answers a call or a voice message, the receiver 170B can be placed close to the human ear to receive the voice.

[0173] The microphone 170C, also known as the "microphone" or "transmitter", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can speak close to the microphone 170C to input the sound signal into the microphone 170C. The electronic device 100 can be provided with at least one microphone 170C. In some other embodiments, the electronic device 100 can be provided with two microphones 170C, which can not only collect sound signals but also implement a noise reduction function. In some other embodiments, the electronic device 100 can also be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify the sound source, and implement functions such as directional recording.

[0174] The headphone jack 170D is used to connect a wired headphone. The headphone jack 170D can be a USB interface, or a 3.5mm open mobile terminal platform (OMTP) standard interface, or a cellular telecommunications industry association of the USA (CTIA) standard interface.

[0175] The pressure sensor 180A is used to sense pressure signals and can convert pressure signals into electrical signals. In some embodiments, the pressure sensor 180A can be disposed on the display screen 194.

[0176] There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. The capacitive pressure sensor can include at least two parallel plates with conductive materials. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the intensity of the pressure according to the change in capacitance. When a touch operation acts on the display screen 194, the electronic device 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic device 100 can also calculate the position of the touch according to the detection signal of the pressure sensor 180A.

[0177] The gyroscope sensor 180B can be used to determine the motion posture of the electronic device 100. In some embodiments, the angular velocity of the electronic device 100 around three axes (i.e., the x, y, and z axes) can be determined by the gyroscope sensor 180B. The gyroscope sensor 180B can be used for anti-shake shooting. Exemplarily, when the shutter is pressed, the gyroscope sensor 180B detects the angle of jitter of the electronic device 100, calculates the distance that the lens module needs to compensate according to the angle, and enables the lens to offset the jitter of the electronic device 100 through reverse movement to achieve anti-shake. The gyroscope sensor 180B can also be used for navigation and somatosensory game scenarios.

[0178] The barometric pressure sensor 180C is used to measure barometric pressure. In some embodiments, the electronic device 100 calculates the altitude based on the barometric pressure value measured by the barometric pressure sensor 180C to assist in positioning and navigation.

[0179] The ambient light sensor 180L is used to sense the ambient light brightness. The electronic device 100 can adaptively adjust the brightness of the display screen 194 according to the sensed ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance during photography. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in the pocket to prevent accidental touch.

[0180] The touch sensor 180K, also known as the "touch panel". The touch sensor 180K can be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, also known as a "touch control screen". The touch control screen can be the touch control screen shown above Figure 1 or Figure 2 as shown. The touch sensor 180K is used to detect touch operations acting thereon or nearby. The touch sensor can transmit the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through the display screen 194. In other embodiments, the touch sensor 180K can also be disposed on the surface of the electronic device 100, at a different position from the display screen 194.

[0181] In the embodiments of the present application, the touch sensor 180K is the touch control panel 12 described above. For the introduction of the touch control panel, reference can be made to the relevant descriptions above, and details will not be elaborated here.

[0182] It should be understood that each step in the above method embodiments provided by the present application can be completed by the integrated logic circuit of the hardware in the processor or the instructions in the form of software. The method steps disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by the hardware processor, or executed and completed by the combination of the hardware and software modules in the processor.

[0183] The present application further provides an electronic device, which may include: a memory and a processor. Among them, the memory can be used to store computer programs; the processor can be used to call the computer programs in the memory so that the electronic device executes the method in any one of the above embodiments.

[0184] The present application also provides a chip system, which includes at least one processor for implementing the functions involved in the method executed by the electronic device in any one of the above embodiments.

[0185] In a possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0186] The chip system can be composed of chips or can include chips and other discrete devices.

[0187] Optionally, the processor in the chip system can be one or more. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that realizes by reading the software code stored in the memory.

[0188] Optionally, the memory in the chip system can also be one or more. The memory can be integrated with the processor or can be separately arranged from the processor, and the embodiments of the present application do not limit this. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip or can be separately arranged on different chips. The embodiments of the present application do not specifically limit the type of the memory and the setting manner of the memory and the processor.

[0189] Exemplarily, the chip system may be a field programmable gate array (FPGA), may be an application specific integrated circuit (ASIC), may also be a system on chip (SoC), may also be a central processor unit (CPU), may also be a network processor (NP), may also be a digital signal processor (DSP), may also be a micro controller unit (MCU), may also be a programmable logic device (PLD) or other integrated chips.

[0190] The present application also provides a computer program product, which includes: a computer program (which may also be referred to as code or instruction). When the computer program is run, it causes the computer to execute the method performed by the electronic device in any one of the above embodiments.

[0191] The present application also provides a computer-readable storage medium, which stores a computer program (which may also be referred to as code or instruction). When the computer program is run, it causes the computer to execute the method performed by the electronic device in any one of the above embodiments.

[0192] The various embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0193] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, fiber optic, digital subscriber line) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk).

[0194] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware with a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The foregoing storage media include: various media that can store program codes such as ROM or random access memory RAM, magnetic disks, or optical discs.

[0195] In summary, the above descriptions are only embodiments of the technical solutions of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made according to the disclosure of the present invention shall be included in the protection scope of the present invention.

Claims

1. A touch panel, characterized in that, Comprising: A first electrode layer, a second electrode layer, and N multiplexing circuits, wherein the first electrode layer and the second electrode layer are stacked; The first electrode layer includes N first touch channels arranged along a first direction and M second touch channels arranged along a second direction; each of the first touch channels includes a plurality of first touch electrodes connected in series; each of the second touch channels includes a plurality of second touch electrodes connected in series; N and M are both positive integers not less than 1; the first direction and the second direction intersect each other; The second electrode layer includes N third touch channels provided at positions corresponding to the N first touch channels, and the N third touch channels are arranged along the first direction; each of the third touch channels includes a plurality of third touch electrodes connected in series; The i-th multiplexing circuit among the N multiplexing circuits is configured to select a touch channel to be connected to the output terminal of the touch chip from the i-th first touch channel among the N first touch channels and the i-th third touch channel among the N third touch channels, where i is a positive integer not greater than N.

2. The touch panel according to claim 1, wherein, The second electrode layer further includes a plurality of bridges for connecting the plurality of first touch electrodes in series.

3. The touch panel according to claim 1, wherein The plurality of first touch electrodes are arranged at equal intervals, the plurality of second touch electrodes are arranged at equal intervals, and the plurality of third touch electrodes are arranged at equal intervals.

4. The touch panel according to any one of claims 1 to 3, characterized in that, The i-th multiplexing circuit includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube. The first ends of the first switching tube and the third switching tube are both connected to the i-th first touch channel. The first ends of the fourth switching tube and the second switching tube are both connected to the i-th third touch channel. The second ends of the first switching tube and the second switching tube are both configured to receive a touch signal. The second ends of the fourth switching tube and the third switching tube are both grounded. The control ends of the first switching tube and the fourth switching tube are both configured to receive a first switching signal or a third switching signal. The control ends of the second switching tube and the third switching tube are both configured to receive a second switching signal or a fourth switching signal. The first switching signal is used to control the conduction of the first switching tube and the fourth switching tube. The third switching signal is used to control the turning off of the first switching tube and the fourth switching tube. The second switching signal is used to control the turning off of the second switching tube and the third switching tube. The fourth switching signal is used to control the conduction of the second switching tube and the third switching tube.

5. The touch panel according to claim 4, wherein The first ends of the first switching tube and the third switching tube are both connected to two ends of the i-th first touch channel; and / or, the first ends of the fourth switching tube and the second switching tube Q2 are both connected to two ends of the i-th third touch channel.

6. The touch panel according to claim 4, wherein The touch panel further includes a touch chip, the touch chip includes N output terminals and M input terminals, the N output terminals are used to connect the input terminals of the N multiplexing circuits, and the M input terminals are used to connect the M second touch channels. The input terminal of the i-th multiplexing circuit is the common terminal of the second terminal of the first switching transistor and the second terminal of the second switching transistor.

7. The touch panel according to claim 6, wherein, The touch chip further includes a first control terminal and a second control terminal. The first control terminal of the touch chip is used to connect the first control terminal of each multiplexing circuit. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switching transistor and the control terminal of the fourth switching transistor. The second control terminal of the touch chip is used to connect the second control terminal of each multiplexing circuit. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switching transistor and the control terminal of the third switching transistor. The touch chip is further configured to, when receiving a first instruction for indicating capacitance detection, send the first switching signal to the first control terminal of the touch chip, and send the second switching signal to the second control terminal of the touch chip; or, the touch chip is further configured to, when receiving a second instruction for indicating pressure sensing detection, send the third switching signal to the first control terminal of the touch chip, and send the fourth switching signal to the second control terminal of the touch chip.

8. The touch panel according to claim 4, characterized in that, The touch panel further includes a switch chip, the switch chip includes a first terminal and a second terminal. The first terminal of the switch chip is used to connect the first control terminal of each multiplexing circuit. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switching transistor and the control terminal of the fourth switching transistor. The second terminal of the switch chip is used to connect the second control terminal of each multiplexing circuit. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switching transistor and the control terminal of the third switching transistor. The switch chip is further configured to, when receiving a first instruction for indicating capacitance detection, send the first switching signal to the first terminal of the switch chip, and send the second switching signal to the second terminal; or, the touch chip is further configured to, when receiving a second instruction for indicating pressure sensing detection, send the third switching signal to the first terminal of the switch chip, and send the fourth switching signal to the second terminal.

9. A touch screen, characterized in that, Including: A touch panel and N multiplexing circuits. The touch panel includes a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer are arranged in a stacked manner. The first electrode layer includes N first touch channels arranged along a first direction and M second touch channels arranged along a second direction; each of the first touch channels includes a plurality of first touch electrodes connected in series; each of the second touch channels includes a plurality of second touch electrodes connected in series; both N and M are positive integers not less than 1; the first direction intersects with the second direction. The second electrode layer includes N third touch channels disposed at positions corresponding to the N first touch channels, and the N third touch channels are arranged in a first direction; each of the third touch channels includes a plurality of third touch electrodes, and the plurality of third touch electrodes are connected in series. The i-th multiplexing circuit among the N multiplexing circuits is configured to select a touch channel to be connected to the output end of the touch chip from the i-th first touch channel among the N first touch channels and the i-th third touch channel among the N third touch channels, where i is a positive integer not greater than N.

10. The touch screen according to claim 9, characterized in that, The touch screen further includes a display module for displaying images and information; the display module includes a substrate and a circuit layer located on the substrate, and the circuit layer includes a driving circuit and N multiplexing circuits.

11. The touch screen according to claim 9, characterized in that, The second electrode layer further includes a plurality of bridges for connecting the plurality of first touch electrodes in series.

12. The touch screen according to claim 9, characterized in that, The plurality of first touch electrodes are arranged at equal intervals, the plurality of second touch electrodes are arranged at equal intervals, and the plurality of third touch electrodes are arranged at equal intervals.

13. The touch screen according to any one of claims 9-12, characterized in that, The i-th multiplexing circuit includes a first switch transistor, a second switch transistor, a third switch transistor, and a fourth switch transistor. The first ends of the first switch transistor and the third switch transistor are both connected to the i-th first touch channel. The first ends of the fourth switch transistor and the second switch transistor are both connected to the i-th third touch channel. The second ends of the first switch transistor and the second switch transistor are both configured to receive a touch signal. The second ends of the fourth switch transistor and the third switch transistor are both grounded. The control ends of the first switch transistor and the fourth switch transistor are both configured to receive a first switch signal or a third switch signal. The control ends of the second switch transistor and the third switch transistor are both configured to receive a second switch signal or a fourth switch signal. The first switch signal is used to control the conduction of the first switch transistor and the fourth switch transistor. The second switch signal is used to control the cutoff of the first switch transistor and the fourth switch transistor. The second switch signal is used to control the cutoff of the second switch transistor and the third switch transistor. The fourth switch signal is used to control the conduction of the second switch transistor and the third switch transistor.

14. The touch screen according to claim 13, wherein The first ends of the first switch transistor and the third switch transistor are both connected to two ends of the i-th first touch channel; and / or, the first ends of the fourth switch transistor and the second switch transistor Q2 are both connected to two ends of the i-th third touch channel.

15. The touch screen according to claim 13, wherein The touch panel further includes a touch chip. The touch chip includes N output ends and M input ends. The N output ends are configured to connect to the input ends of the N multiplexing circuits. The M input ends are configured to connect to the M second touch channels. The input end of the i-th multiplexing circuit is the common end of the second ends of the first switch transistor and the second switch transistor.

16. The touch screen according to claim 15, wherein The touch chip further includes a first control terminal and a second control terminal. The first control terminal of the touch chip is used to connect to the first control terminal of each of the multiplexing circuits. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switching transistor and the control terminal of the fourth switching transistor. The second control terminal of the touch chip is used to connect to the second control terminal of each of the multiplexing circuits. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switching transistor and the control terminal of the third switching transistor. The touch chip is further configured to, when receiving a first instruction for indicating capacitance detection, send the first switching signal to the first control terminal of the touch chip and send the second switching signal to the second control terminal of the touch chip; or, the touch chip is further configured to, when receiving a second instruction for indicating pressure sensing detection, send the third switching signal to the first control terminal of the touch chip and send the fourth switching signal to the second control terminal of the touch chip.

17. The touch screen according to claim 13, characterized in that, The touch panel further includes a switch chip. The switch chip includes a first terminal and a second terminal. The first terminal of the switch chip is used to connect to the first control terminal of each of the multiplexing circuits. The first control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the first switching transistor and the control terminal of the fourth switching transistor. The second terminal of the switch chip is used to connect to the second control terminal of each of the multiplexing circuits. The second control terminal of the i-th multiplexing circuit is the common terminal of the control terminal of the second switching transistor and the control terminal of the third switching transistor. The switch chip is further configured to, when receiving a first instruction for indicating capacitance detection, send the first switching signal to the first terminal of the switch chip and send the second switching signal to the second terminal; and / or, the touch chip is further configured to, when receiving a second instruction for indicating pressure sensing detection, send the third switching signal to the first terminal of the switch chip and send the fourth switching signal to the second terminal.

18. An electronic device, characterized in that, Comprising the touch panel according to any one of claims 1-8 or the touch screen according to any one of claims 9-17.

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