Touch modules and electronic devices

Abstract

The purpose of the embodiment of the present application is to propose a touch module and an electronic device, wherein the touch module includes a flexible touch panel and a touch chip, wherein the flexible touch panel includes a bending area and a first panel area and a second panel area located on both sides of the bending area; further includes a first detection block arranged in the first panel area, a second detection block arranged in the second panel area, a binding area, a first wiring connecting the binding area and the first detection block, and a second wiring connecting the binding area and the second detection block; the touch chip is bound to the binding area; during the bending process of the first panel area and the second panel area relative to the bending area, the capacitance between the first detection block and the second detection block changes; the touch chip detects the opening and closing angle between the first panel area and the second panel area according to the changed capacitance. With such a design, the opening and closing angle is detected by utilizing the capacitance change between the paired detection blocks in the flexible touch panel, so as to realize the integration of touch and angle detection, with a simple structure, small space occupation and low cost.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of touch panel technology, and more particularly to a touch module and an electronic device. Background Art

[0002] A foldable screen is a flexible screen that can be bent relative to a bending area, and can be bent to form different opening and closing angles. Foldable screens have different touch and display designs based on different opening and closing angles. Therefore, it is very important to detect the opening and closing angle of a foldable screen.

[0003] In the related art, foldable screens usually use angle sensors to detect the opening and closing angles. However, the angle sensors will cause the volume of the foldable screen to increase and the cost to increase. Summary of the invention

[0004] In view of this, an object of the embodiments of the present application is to provide a touch module and an electronic device.

[0005] In a first aspect, an embodiment of the present application provides a touch module, including a flexible touch panel and a touch chip, wherein the flexible touch panel includes a bending area and a first panel area and a second panel area located on both sides of the bending area;

[0006] The flexible touch panel further includes at least one first detection block arranged in the first panel area, at least one second detection block arranged in the second panel area, a binding area, a first wiring connecting the binding area and the first detection block, and a second wiring connecting the binding area and the second detection block; the touch chip is bound to the binding area;

[0007] During the bending process of the first panel area and the second panel area relative to the bending area, the capacitance between the first detection block and the second detection block changes; the touch chip detects the opening and closing angle between the first panel area and the second panel area according to the changed capacitance.

[0008] In the touch module provided in the embodiment of the present application, the opening and closing angles are detected by utilizing the capacitance changes between paired detection blocks in the flexible touch panel, thereby realizing the integration of touch and angle detection, with a simple structure, small space occupation and low cost.

[0009] In a possible embodiment, the flexible touch panel includes a first substrate and a touch structure layer on one side of the first substrate, the first substrate is a bendable flexible substrate, the touch structure layer includes touch electrodes with touch function; the first wiring, the second wiring, the first detection block and the second detection block are located in the touch structure layer.

[0010] In a possible implementation manner, the touch control structure layer includes a first touch control layer, a touch control insulating layer, and a second touch control layer stacked on one side of the first substrate;

[0011] The first wiring, the second wiring, the first detection block, the second detection block and the first touch layer or the second touch layer are in the same layer structure.

[0012] In a possible implementation, the first touch control layer and the second touch control layer include at least one of indium tin oxide, a metal grid and nano silver wires.

[0013] In a possible implementation, the flexible touch panel includes a grounding trace located in the first touch layer or the second touch layer, and the first trace, the second trace, the first detection block, the second detection block and the grounding trace are in the same layer structure.

[0014] In a possible implementation manner, one end of the first wiring is connected to the first detection block, and the other end of the first wiring has a first circuit, a second circuit, and a third circuit; the first circuit is grounded through a storage capacitor; the second circuit is connected to a capacitance detection circuit through a first switch; and the third circuit is connected to a power supply terminal through a second switch;

[0015] One end of the second wiring is connected to the second detection block, and the other end of the second wiring is grounded;

[0016] The touch control chip obtains the opening and closing angle between the first panel area and the second panel area according to the detection result of the capacitance detection circuit.

[0017] In a possible implementation manner, the first routing line and the second routing line are ground routing lines of the flexible touch panel; the first routing line, the second routing line, the first detection block and the second detection block are in the same layer structure.

[0018] In a possible implementation manner, the first detection block and the second detection block are in the shape of a triangle, a quadrilateral, a pentagon, a hexagon, a circle or an ellipse;

[0019] The first detection block and the second detection block are solid structures or grid structures.

[0020] In a possible implementation, the flexible touch panel includes a plurality of the bending areas.

[0021] In a possible implementation manner, the bending area includes a bending axis of the first panel area and the second panel area, and the first detection block and the second detection block are arranged in pairs relative to the bending axis.

[0022] In a possible implementation manner, the flexible touch panel is provided with a plurality of pairs of the first detection blocks and the second detection blocks along the bending axis.

[0023] In a second aspect, an embodiment of the present application also provides an electronic device, including a display panel and a touch module according to any one of the embodiments of the first aspect, which is arranged on the display panel.

[0024] In a possible implementation manner, the flexible touch panel in the touch module is of an external mounting type, a surface covering type, or an internal mounting type relative to the display panel.

[0025] In a possible implementation, the display panel includes a second substrate and a pixel unit arranged on one side of the second substrate, the second substrate is a bendable flexible substrate, and the pixel unit is an organic light emitting diode, a quantum dot light emitting diode, a sub-millimeter light emitting diode or a micro light emitting diode. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A front view of a flexible touch panel provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of partitions of a flexible touch panel provided in an embodiment of the present application;

[0029] Figure 3 A cross-sectional view of a flexible touch panel provided in an embodiment of the present application;

[0030] Figure 4 A schematic diagram of a flexible touch panel in a fully folded state provided in an embodiment of the present application;

[0031] Figure 5 A circuit schematic diagram of a first detection block and a second detection block provided in an embodiment of the present application;

[0032] Figure 6 A schematic diagram of the angle detection principle of the first detection block and the second detection block provided in an embodiment of the present application;

[0033] Figure 7 A capacitance-opening angle relationship curve provided in an embodiment of the present application;

[0034] Figure 8A control timing diagram of the touch control chip provided in an embodiment of the present application;

[0035] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1-flexible touch panel, 2-touch area, 3-routing area, 4-binding area, 5-first detection block, 6-first pair of detection blocks, 7-second detection block, 8-second pair of detection blocks, 9-bending area, 10-first panel area, 11-second panel area, 12-first substrate, 13-barrier layer, 14-first touch layer, 15-touch insulation layer, 16-second touch layer, 17-touch structure layer, 18-touch protection layer, 19-display panel, 20-first adhesive layer, 21-polarizer, 22-second adhesive layer, 23-flexible cover plate;

[0038] M: bending axis, S1: first switch, S2: second switch. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] An embodiment of the present application provides a touch module, which includes a flexible touch panel and a touch chip. Figure 1 A front view of a flexible touch panel provided in an embodiment of the present application, such as Figure 1 As shown, the flexible touch panel 1 includes a touch area 2 and a peripheral area. The touch area 2 is an area for realizing the touch function, wherein the array is provided with touch electrodes. The peripheral area is located outside the touch area, and includes a routing area 3 and a binding area 4. The touch electrodes extend to the binding area 4 (Bonding area) through the routing extending from the routing area 3. The touch chip is bound to the binding area 4.

[0041] For example, in a possible implementation manner, the touch chip is bonded to the binding area 4 through an FPC (Flexible Printed Circuit) bonding process.

[0042] The panel shape of the flexible touch panel 1 and the shape of the touch area 2 can be any shape, such as Figure 1As shown, in this embodiment, the panel shape of the flexible touch panel 1 and the shape of the touch area 2 are both rectangular.

[0043] The flexible touch panel 1 is a bendable panel structure. Figure 2 A schematic diagram of partitioning of a flexible touch panel provided in an embodiment of the present application, such as Figure 2 As shown, the flexible touch panel 1 includes a bending zone 9 and a first panel zone 10 and a second panel zone 11 arranged on both sides of the bending zone 9. The bending zone 9 is a bending deformation area designed for the flexible touch panel 1, and the first panel zone 10 and the second panel zone 11 are bent relative to the bending zone 9.

[0044] It should be noted that, for the flexible touch panel 1, any area thereof can be used as the bending area 9, and the panel parts located on both sides of the bending area 9 are the first panel area 10 and the second panel area 11. Two or more bending areas 9 can also be provided, so that the flexible touch panel 1 can be bent relative to two or more positions, that is, the flexible touch panel 1 can be a two-fold or multi-fold product.

[0045] This article describes the flexible touch panel 1 by taking an example in which the flexible touch panel 1 has a bending area 9 and the bending area 9 is located at the center line of the flexible touch panel 1 .

[0046] The flexible touch panel 1 has a flattened state, a fully folded state and a semi-folded state between the two folds during the bending movement; when the flexible touch panel 1 is in the flattened state, the first panel area 10 and the second panel area 11 extend coplanarly, and the opening and closing angle between the first panel area 10 and the second panel area 11 is 180 degrees; when the flexible touch panel 1 is in the fully folded state, the first panel area 10 and the second panel area 11 are relatively fitted, and the opening and closing angle between the first panel area 10 and the second panel area 11 is 0 degree; when the flexible touch panel 1 is in the semi-folded state, the opening and closing angle between the first panel area 10 and the second panel area 11 is between 0-180 degrees.

[0047] The bending zone 9 has a bending axis M, which refers to the axis around which the bending zone 9 deforms during deformation. The axis is located between the first panel zone 10 and the second panel zone 11 , and is usually the symmetric center line between the first panel zone 10 and the second panel zone 11 .

[0048] The flexible touch panel 1 adopts capacitive touch technology, which includes self-capacitance and mutual capacitance. The self-capacitance flexible touch panel is composed of a touch electrode and a human body forming a self-capacitance, and position detection is performed using the change in self-capacitance. The mutual capacitance structure is composed of a first touch electrode and a second touch electrode forming a mutual capacitance, and position detection is performed using the change in mutual capacitance. The mutual capacitance flexible touch panel can be divided into a single-layer electrode structure and a double-layer electrode structure. The single-layer electrode structure is characterized in that the first touch electrode and the second touch electrode are realized through a layer; the double-layer electrode structure is characterized in that the first touch electrode and the second touch electrode are realized through a two-layer structure; the self-capacitance flexible touch panel 1 is a single-layer structure.

[0049] Figure 3 A cross-sectional view of a flexible touch panel 1 provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the flexible touch panel 1 includes a first substrate 12 , a barrier layer 13 , a first touch layer 14 , a touch insulating layer 15 , a second touch layer 16 and a touch protection layer 18 which are stacked in sequence.

[0050] The first substrate 12 is a plate-like structure that can be bent and deformed, and can be made of flexible materials such as acrylic, polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or fiberglass reinforced plastic (FRP). The barrier layer 13 is made of a silicon-containing inorganic material, and the silicon-containing inorganic material can be at least one of silicon oxide SiO2, silicon nitride SiNx and silicon oxynitride SiON.

[0051] The first touch layer 14 and the second touch layer 16 are made of at least one of indium tin oxide ITO, metal mesh and nano silver wire. The first touch layer 14 includes a plurality of connecting bridges, and the second touch layer 16 may include a plurality of first touch electrodes arranged along a first direction, and a plurality of second touch electrodes arranged at intervals along a second direction perpendicular to the first direction. Two adjacent first touch electrodes are connected as a whole, and two adjacent second touch electrodes are connected to the connecting bridge through a via provided on the touch insulating layer 15, that is, the connecting bridge connects the two adjacent second touch electrodes. The first touch layer 14, the touch insulating layer 15 and the second touch layer 16 are collectively referred to as the touch structure layer 17.

[0052] From this we can see that Figure 3The flexible touch panel 1 shown is a mutual capacitance flexible touch panel 1 with a double-layer electrode structure, but the embodiment of the present application is not limited thereto. For example, the flexible touch panel 1 can also be a mutual capacitance touch panel with a single-layer electrode structure, or a self-capacitive touch panel. In different types of flexible touch panels 1, the structure disposed on the first substrate 12 and used to form the touch electrodes can be referred to as a touch structure layer 17.

[0053] Please continue to refer to Figure 1 The flexible touch panel 1 also includes a first pair of detection blocks 6 and a second pair of detection blocks 8. Taking the first pair of detection blocks 6 as an example, the first pair of detection blocks 6 includes a first detection block 5 and a second detection block 7. Figure 4 For a schematic diagram of a flexible touch panel in a folded state provided in an embodiment of the present application, please refer to Figure 1 and Figure 4 The first detection block 5 is arranged in the first panel area 10, and the second detection block 7 is arranged in the second panel area 11. The first detection block 5 and the second detection block 7 are square block structures arranged in pairs relative to the bending axis M.

[0054] In another possible implementation manner, the shapes of the first detection block 5 and the second detection block 7 may also be any shapes such as a triangle, a quadrilateral, a pentagon, a hexagon, a circle or an ellipse.

[0055] The first detection block 5 extends from the routing area 3 to the connection binding area 4 through the first routing line, and the second detection block 7 extends from the routing area 3 to the binding area 4 through the second routing line. The first detection block 5, the second detection block 7, the first routing line and the second routing line are in the same layer structure and are all located in the touch structure layer 17.

[0056] It should be noted here that A and B are structures of the same layer, which means that structures A and B are made of the same layer, and A and B are made of the same layer, which means that A and B are formed simultaneously through the same patterning process, and the "patterning process" includes deposition of film layers, coating of photoresist, mask exposure, development, etching and stripping of photoresist. Deposition can be any one or more selected from sputtering, evaporation and chemical vapor deposition, coating can be any one or more selected from spray coating and spin coating, and etching can be any one or more selected from dry etching and wet etching.

[0057] exist Figure 3In the illustrated embodiment, the first detection block 5, the second detection block 7, the first routing wire and the second routing wire may be in the same layer structure as the first touch layer 14, or in the same layer structure as the second touch layer 16. Since the first touch layer 14 and the second touch layer 16 are made of at least one material selected from indium tin oxide ITO, metal mesh Metal Mesh and nano silver wire, the first detection block 5, the second detection block 7, the first routing wire and the second routing wire are also made of at least one material selected from indium tin oxide ITO, metal mesh Metal Mesh and nano silver wire. In other words, due to the difference in materials, the first detection block 5 and the second detection block 7 may be a solid structure or a mesh structure.

[0058] Figure 5 The circuit schematic diagram of the first detection block and the second detection block provided in the embodiment of the present application is as follows: Figure 5 As shown, one end of the first wiring is connected to the first detection block 5, and the other end is connected to the first circuit, the second circuit and the third circuit. The first circuit is grounded through the storage capacitor Cb, the second circuit is connected to the capacitance detection circuit through the first switch S1 for capacitance detection, and the third circuit is connected to the power supply terminal VDD through the second switch S2 for charging the storage capacitor Cb.

[0059] from Figure 5 It can be seen from the figure that the second detection block 7 is always in a grounded state, which can realize the ESD (Electro-Static discharge) protection function of the flexible touch panel 1. The first detection block 5 has a state one and a state two.

[0060] In state 1, the first switch S1 is closed, the second switch S2 is opened, and the power supply terminal VDD charges the storage capacitor Cb;

[0061] In state two, the first switch S1 is turned on, the second switch S2 is turned off, and the first detection block 5 is connected to the capacitance detection circuit, which is mainly used to detect the capacitance between the first detection block 5 and the second detection block 7 .

[0062] Figure 6 The angle detection principle diagram of the first detection block 5 and the second detection block 7 provided in the embodiment of the present application is as follows: Figure 6 As shown, in the process of the opening and closing angle of the first panel area 10 and the second panel area 11 expanding from 0° to 180°, the capacitance between the first detection block 5 and the second detection block 7 arranged in pairs gradually decreases from the maximum, and the capacitance between the first detection block 5 and the second detection block 7 is related to the opening and closing angle of the first panel area 10 and the second panel area 11. The following Table 1 tests the capacitance at different opening and closing angles.

[0063] Angle / ° Value 0 a 45 b 90 C 120 d 135 e 150 f 180 g

[0064] Table 1

[0065] According to the test results in Table 1, the corresponding curve relationship between the opening and closing angle and the capacitance can be obtained, such as Figure 7 By using this capacitance-opening angle relationship curve, after the capacitance detection circuit outputs the detection result, the detection result can be converted into the opening angle between the first panel area 10 and the second panel area 11.

[0066] That is to say, the touch chip can obtain the opening and closing angle between the first panel area 10 and the second panel area 11 according to the detection result of the capacitance detection circuit.

[0067] The working principle of the second pair of detection blocks 8 is the same as that of the first pair of detection blocks 6, which will not be described here. However, the present application is not limited thereto, for example, only one pair or multiple pairs of first detection blocks 5 and second detection blocks 7 may be provided.

[0068] Figure 8 The control timing diagram of the touch chip provided in the embodiment of the present application is as follows: Figure 8 As shown, the scanning cycle of the touch chip includes an angle detection phase Angle Detecting and a non-angle detection phase No-angle Detecting.

[0069] In the angle detection stage Angle Detecting, the first switch S1 is controlled to be closed, and the second switch S2 and RST in the capacitance detection circuit are turned on, so as to charge the storage capacitor Cb and reset the capacitance detection circuit; then, the first switch S1 is controlled to be turned on, and the second switch S2 and RST in the capacitance detection circuit are turned off; here, in addition to performing normal touch function detection, the touch chip is also responsible for detecting the capacitance between the first detection block 5 and the second detection block 7; thereby realizing the detection of the opening and closing angle; in the non-angle detection stage No-angle Detecting, the first switch S1 and the second switch S2 are controlled to be turned on, and the touch chip only performs normal touch function.

[0070] This design can detect the opening and closing angle between the first panel area 10 and the second panel area 11 without affecting the touch function of the normal flexible touch panel. When the touch chip detects the opening and closing angle, it can perform corresponding touch control based on the opening and closing angle.

[0071] In a scanning cycle of the touch chip, the ratio of the angle detection phase to the non-angle detection phase can be set differently, such as 1:1, 2:1, etc.

[0072] In this embodiment, the first routing line and the second routing line are both ground routing lines of the flexible touch panel 1, and the first detection block and the second detection block are made on the same layer as the ground routing line. Such an arrangement can adopt a shared routing method to improve the integration of the flexible touch panel and reduce costs.

[0073] However, the embodiments of the present application are not limited thereto. For example, the first routing line and the second routing line can be designed into a pair of the first detection block 5 and the second detection block 7 using other signal lines, or separate routing lines can be set to connect the first detection block 5 and the second detection block 7.

[0074] In the touch module provided in the embodiment of the present application, the capacitance change between the paired detection blocks in the flexible touch panel 1 is used to detect the opening and closing angle, thereby realizing the integration of touch and angle detection, with a simple structure, small space occupation and low cost.

[0075] In addition, in the touch module provided in the embodiment of the present application, the detection block can also be set by sharing the signal line in the flexible touch panel 1. Such a design does not add additional masks, reduces development costs, and can ensure production efficiency.

[0076] The embodiments of the present application also provide an electronic device, including a display panel and the touch module described in the above embodiments. The electronic device may be a mobile phone, a foldable watch or a foldable tablet, etc.

[0077] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Fig. 9 As shown, the electronic device includes a stacked display panel 19 , a first adhesive layer 20 , a flexible touch panel 1 , a polarizer 21 , a second adhesive layer 22 and a flexible cover plate 23 .

[0078] The display panel 19 is also a bendable flexible panel structure, including a second substrate and a pixel unit, and the second substrate is a plate-like structure that can be bent and deformed. A plurality of pixel units are arranged on one side of the second substrate, and the plurality of pixel units are arranged in an array on the flexible substrate to form a pixel array. The pixel unit can be an OLED (Organic Light-Emitting Diode), a QLED (Quantum Dot Light Emitting Diodes), a MiniLED (sub-millimeter light-emitting diode) or a Micro-LED (micro light-emitting diode).

[0079] Through the above description, the flexible touch panel is an external type relative to the display panel 19; however, the embodiments of the present application are not limited to this. For example, the flexible touch panel can also be an On-Cell covering the surface or an In-Cell embedded in the display panel 19.

[0080] The electronic device also includes a processing chip, which can receive the opening and closing angle detection results of the touch chip and realize richer functions based on the opening and closing angle, such as adjusting the keyboard brightness, controlling the area display, controlling the camera operation, etc.

[0081] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0082] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0083] In addition, the technical features involved in the different implementations of the embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0084] So far, the technical solutions of the embodiments of the present application have been described in conjunction with the preferred implementations shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the embodiments of the present application is obviously not limited to these specific implementations. Without departing from the principles of the embodiments of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the embodiments of the present application.

Claims

1. A touch module, characterized in that: It comprises a flexible touch panel and a touch chip, wherein the flexible touch panel comprises a bending area and a first panel area and a second panel area located on both sides of the bending area; The flexible touch panel further includes at least one first detection block arranged in the first panel area, at least one second detection block arranged in the second panel area, a binding area, a first wiring connecting the binding area and the first detection block, and a second wiring connecting the binding area and the second detection block; the touch chip is bound to the binding area; During the bending process of the first panel area and the second panel area relative to the bending area, the capacitance between the first detection block and the second detection block changes; the touch chip detects the opening and closing angle between the first panel area and the second panel area according to the changed capacitance; The flexible touch panel includes a first substrate and a touch structure layer on one side of the first substrate, the first substrate is a bendable flexible substrate, the touch structure layer includes touch electrodes with a touch function; the first wiring, the second wiring, the first detection block and the second detection block are located in the touch structure layer; The touch control structure layer includes a first touch control layer, a touch control insulating layer and a second touch control layer stacked on one side of the first substrate; The first wiring, the second wiring, the first detection block, the second detection block and the first touch layer or the second touch layer are in the same layer structure.

2. The touch module according to claim 1, characterized in that: The first touch layer and the second touch layer include at least one of indium tin oxide, a metal grid and nano silver wires.

3. The touch module according to claim 1, characterized in that: The flexible touch panel includes a grounding wire located in the first touch layer or the second touch layer, and the first wire, the second wire, the first detection block, the second detection block and the grounding wire are in the same layer structure.

4. The touch module according to claim 1, characterized in that: One end of the first wiring is connected to the first detection block, and the other end of the first wiring has a first circuit, a second circuit and a third circuit; the first circuit is grounded through a storage capacitor; the second circuit is connected to a capacitance detection circuit through a first switch; and the third circuit is connected to a power supply terminal through a second switch; One end of the second wiring is connected to the second detection block, and the other end of the second wiring is grounded; The touch control chip obtains the opening and closing angle between the first panel area and the second panel area according to the detection result of the capacitance detection circuit.

5. The touch module according to claim 4, characterized in that: The first wiring and the second wiring are ground wirings of the flexible touch panel; the first wiring, the second wiring, the first detection block and the second detection block are in the same layer structure.

6. The touch module according to claim 1, characterized in that: The flexible touch panel includes a plurality of bending areas.

7. The touch module according to claim 1, characterized in that: The bending area includes a bending axis of the first panel area and the second panel area, and the first detection block and the second detection block are arranged in pairs relative to the bending axis.

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

Images