Electronic Devices

Abstract

An electronic device includes a flexible cover, a force-sensitive measuring module, a touch display module and a metal sheet. The force-sensitive measuring module includes a flexible electrode and a flexible force-sensitive composite layer. The flexible force-sensitive composite layer includes at least one flexible electrode layer and at least one functional partition layer. The flexible electrode layer has a first resistivity. The functional partition layer has a second resistivity greater than the first resistivity. The flexible electrode layer and the functional partition layer are stacked under the flexible electrode. The touch display module is arranged between the flexible cover and the force-sensitive measuring module, and includes an organic light-emitting display unit and a touch sensing layer. The metal sheet is arranged under the force-sensitive measuring module and serves as a contact electrode of the force-sensitive measuring module. Since the force-sensitive measuring module cooperates with the flexible cover and the touch display module including the organic light-emitting display unit, a flexible three-dimensional touch sensing function can be realized.

Description

Technical Field

[0001] The invention relates to an electronic device. Background Art

[0002] With the diversified development of touch modules, they have been maturely applied in industrial electronics and consumer electronics products. From the need to determine the two-dimensional position of the touch point on the screen surface (for example, the X-axis direction and the Y-axis direction), it has evolved to the need to sense the force parameters caused by the change of force applied to the screen surface (for example, the Z-axis direction). Even the application demand for flexible panels will be inevitable.

[0003] However, the pressure sensors in the touch module of the conventional technology proposed by the industry have the following problems: (1) the XYZ three-axis electrodes cannot have flexible properties at the same time and cannot achieve the purpose of flexible assembly; and (2) only a local area has the Z-axis sensing function.

[0004] Therefore, how to provide an electronic device that can solve the above problems is one of the problems that the industry is eager to invest research and development resources to solve. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an electronic device that can solve the above-mentioned problem.

[0006] In order to achieve the above-mentioned purpose, according to one embodiment of the present invention, an electronic device includes a flexible cover plate, a force-sensitive measurement module, a touch display module and a metal sheet. The force-sensitive measurement module includes a flexible electrode and a flexible force-sensitive composite layer. The flexible force-sensitive composite layer includes at least one flexible electrode layer and at least one functional partition layer. The flexible electrode layer has a first resistivity. The functional partition layer has a second resistivity greater than the first resistivity. The flexible electrode layer and the functional partition layer are stacked under the flexible electrode. The touch display module is arranged between the flexible cover plate and the force-sensitive measurement module, and includes an organic light-emitting display unit and a touch sensing layer. The metal sheet is arranged under the force-sensitive measurement module and serves as a contact electrode of the force-sensitive measurement module.

[0007] In one or more embodiments of the present invention, the touch display module is an external touch display module or an integrated embedded touch display module.

[0008] In one or more embodiments of the present invention, the flexible electrode layer is a silver nanowire electrode layer.

[0009] In one or more embodiments of the present invention, the functional spacer layer is a matrix layer doped with low-concentration nanosilver wires.

[0010] In one or more embodiments of the present invention, the metal sheet is a copper foil or a steel sheet.

[0011] In one or more embodiments of the present invention, the flexible electrode is located between the flexible force-sensitive composite layer and the touch display module.

[0012] In one or more embodiments of the present invention, the electronic device further comprises a conductive adhesive disposed between the metal sheet and the flexible force-sensitive composite layer.

[0013] In one or more embodiments of the present invention, the electronic device further includes a flexible carrier substrate disposed between the flexible electrode and the touch display module.

[0014] In one or more embodiments of the present invention, the flexible electrode includes a plurality of electrode blocks, and the electrode blocks are separated from each other.

[0015] In one or more embodiments of the present invention, the electronic device further includes a polarizing element disposed between the flexible cover and the touch display module.

[0016] In one or more embodiments of the present invention, the pressure signal of the flexible force-sensitive composite layer is extracted by a voltage divider circuit or a Wheatstone circuit.

[0017] In summary, in the electronic device of the present invention, the force sensing module adopts a flexible force-sensitive composite layer with flexibility and good piezoresistive linearity (i.e., a nanosilver wire electrode layer with low resistivity and a functional spacer layer with high resistivity alternately stacked), and cooperates with a flexible cover plate and a touch display module including an organic light-emitting display unit, so that a flexible three-dimensional touch sensing function can be realized. The present invention also uses a metal sheet that is generally used in conjunction with an organic light-emitting display unit as one of the electrodes of the force sensing module, so that the metal sheet also has the following uses: (1) prevent the panel from being scratched; (2) provide a flattening effect; and (3) anti-interference (prevent interference with the main substrate signal below); and (4) as a contact electrode of the force sensing module.

[0018] The above description is only used to illustrate the problems to be solved by the present invention, the technical means to solve the problems, and the effects produced, etc. The specific details of the present invention will be introduced in detail in the following implementation methods and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the above and other objects, features, advantages and embodiments of the present invention more clearly understood, the accompanying drawings are described as follows:

[0020] Figure 1 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0021] Figure 2 A schematic diagram illustrating a flexible force-sensitive composite layer according to an embodiment of the present invention;

[0022] Figure 3A To illustrate Figure 2 A partial enlarged view of the flexible force-sensitive composite layer when it is not pressed;

[0023] Figure 3B To illustrate Figure 2 A partial enlarged view of the flexible force-sensitive composite layer when it is pressed;

[0024] Figure 4 A schematic diagram illustrating a circuit for extracting a pressure signal sensed by a flexible force-sensitive composite layer;

[0025] Figure 5 A schematic diagram illustrating a circuit for extracting a pressure signal sensed by a flexible force-sensitive composite layer;

[0026] Figure 6 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0027] Figure 7 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0028] Figure 8 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0029] Fig. 9 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0030] Fig.10 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0031] Fig.11 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0032] Fig.12 FIG. 4 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention.

[0033]

Explanation of symbols

[0034] 100A, 100B, 100C, 100D, 100E, 100F, 100G, 100H: Electronic devices

[0035] 110: Flexible cover

[0036] 120a, 120b, 120c: Adhesive layer

[0037] 130,130': Touch display module

[0038] 131: Organic light emitting display unit

[0039] 132: Touch sensing layer

[0040] 140: Polarizing element

[0041] 150,150': Force sensitive measurement module

[0042] 151,151': Flexible electrode

[0043] 151a1,151a2: Electrode block

[0044] 153: Flexible force-sensitive composite layer

[0045] 153a: Flexible electrode layer

[0046] 153b: Functional compartment

[0047] 160:Metal sheet

[0048] 170: Conductive adhesive

[0049] 180: Flexible carrier substrate

[0050] 190,190A:Circuit

[0051] R1, R2, R3, R4: resistors DETAILED DESCRIPTION

[0052] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some known and commonly used structures and elements will be depicted in a simple schematic manner in the drawings.

[0053] Please refer to Figure 1 . Figure 1 FIG. 1 is a schematic diagram illustrating an electronic device 100A according to an embodiment of the present invention. Figure 1As shown, the electronic device 100A is a flexible touch display device as an example, which includes a flexible cover 110, adhesive layers 120a, 120b, a touch display module 130, a polarizing element 140, a force sensing module 150 and a metal sheet 160. The polarizing element 140 is disposed between the flexible cover 110 and the touch display module 130, wherein the polarizing element 140 is adhered to the flexible cover 110 via the adhesive layer 120a, and the touch display module 130 is attached to the side of the polarizing element 140 away from the flexible cover 110. The touch display module 130 is disposed between the polarizing element 140 and the force sensing module 150, wherein the force sensing module 150 is adhered to the touch display module 130 via the adhesive layer 120b.

[0054] In some embodiments, the material of the flexible cover 110 includes a flexible polymer material. For example, the flexible polymer material includes colorless polyimide (PI), but the present invention is not limited thereto.

[0055] In some embodiments, Figure 1 As shown, the touch display module 130 includes an organic light emitting display unit 131, a touch sensing layer 132 and an adhesive layer 120c. The adhesive layer 120c is adhered between the organic light emitting display unit 131 and the touch sensing layer 132. The organic light emitting display unit 131 is adhered to the force sensing module 150 via the adhesive layer 120c. The touch display module 130 is attached to the side of the polarizing element 140 away from the flexible cover 110 by the touch sensing layer 132. The touch sensing layer 132 is configured to sense the two-dimensional position (e.g., X-axis direction and Y-axis direction) of the touch point of the user on the flexible cover 110 of the electronic device 100A.

[0056] In some embodiments, Figure 1 As shown, the force sensing module 150 includes a flexible electrode 151 and a flexible force-sensitive composite layer 153. The flexible force-sensitive composite layer 153 is stacked under the flexible electrode 151. The flexible electrode 151 is located between the flexible force-sensitive composite layer 153 and the touch display module 130, and is adhered to the organic light-emitting display unit 131 of the touch display module 130 via the adhesive layer 120b. The force sensing module 150 is configured to sense the force parameters caused by the change in force applied by the user to the surface of the flexible cover 110 of the electronic device 100A (i.e., in the Z-axis direction). In addition, the metal sheet 160 is disposed under the force sensing module 150. The force sensing module 150 is manufactured on the metal sheet 160 using a coating process. The metal sheet 160 can serve as a contact electrode of the force sensing module 150.

[0057] Please refer to Figure 2 . Figure 2FIG. 1 is a schematic diagram illustrating a flexible force-sensitive composite layer 153 according to an embodiment of the present invention. Figure 2 As shown, the flexible force-sensitive composite layer 153 includes at least one flexible electrode layer 153a and at least one functional spacer layer 153b. The flexible electrode layer 153a has a first resistivity. The functional spacer layer 153b has a second resistivity greater than the first resistivity. The flexible electrode layer 153a and the functional spacer layer 153b are stacked under the flexible electrode 151.

[0058] In some embodiments, the second resistivity is about 3 to about 50 times the first resistivity, but the invention is not limited thereto.

[0059] In order to make the flexible force-sensitive composite layer 153 meet the requirements of flexibility, in some embodiments, the flexible electrode layer 153a in the flexible force-sensitive composite layer 153 is a silver nanowire (SNW; also known as AgNW) electrode layer. Figure 3A , which is a drawing Figure 2 The flexible force-sensitive composite layer 153 is a partially enlarged view when it is not pressed. Figure 3A As shown, the flexible electrode layer 153a includes a matrix and nanosilver wires doped therein. The nanosilver wires overlap each other in the matrix to form a conductive network. The matrix refers to a solution containing nanosilver wires that is formed on the flexible electrode 151 by coating or other methods, and the non-nanosilver wire substances that remain on the flexible electrode 151 after the volatile substances are evaporated by heating and drying. The nanosilver wires are dispersed or embedded in the matrix and partially protrude from the matrix. The matrix can protect the nanosilver wires from the influence of the external environment such as corrosion and wear. In some embodiments, the matrix is ​​compressible.

[0060] In some embodiments, the length of the nanosilver wire is about 10 μm to about 300 μm. In some embodiments, the diameter (or width) of the nanosilver wire is less than about 500 nm. In some embodiments, the aspect ratio (ratio of wire length to wire diameter) of the nanosilver wire is greater than 10. In some embodiments, the nanosilver wire can be a deformed form of a material such as a surface of other conductive metal nanowires or a surface of non-conductive nanowires plated with silver. The use of nanosilver wires to form a nanosilver wire electrode layer has the following advantages: low price compared to ITO, simple process, good flexibility, and tolerance to bending, etc.

[0061] In order to make the flexible force-sensitive composite layer 153 meet the aforementioned flexibility requirements, the functional spacer 153b in the flexible force-sensitive composite layer 153 may be a flexible coating formed on the flexible electrode layer 153a. Figure 3AAs shown, the functional spacer 153b is a matrix layer doped with low-concentration nanosilver wires. Specifically, the functional spacer 153b includes a matrix and low-concentration nanosilver wires doped therein, so that the second resistivity of the functional spacer 153b is greater than the first resistivity of the flexible electrode layer 153a. In some embodiments, the matrix of the functional spacer 153b is the same as the matrix of the flexible electrode layer 153a, but the present invention is not limited thereto.

[0062] Please refer to Figure 3B , which is a drawing Figure 2 The flexible force-sensitive composite layer 153 is a partially enlarged view when being pressed. Figure 3A and Figure 3B As shown, since the flexible electrode layer 153a is made of nano silver wires, when the external pressure channel from the flexible cover plate 110 side is transmitted to the force sensing module 150, the flexible electrode layer 153a will be compressed by force, so that the nano silver wires therein are close to and pass through the functional isolation layer 153b, and the number of overlapping points increases, thereby improving the overall conductivity of the flexible force-sensitive composite layer 153 (that is, the resistivity decreases). Therefore, through the change in resistance value obtained by the electrical detection between the flexible electrode 151 and the metal sheet 160, the pressure sensing chip (not shown) can calculate the value of the external pressure channel. For example, if the external pressure channel is large, the resistance value of the flexible force-sensitive composite layer 153 has a larger change; on the contrary, if the external pressure channel is small, the resistance value of the flexible force-sensitive composite layer 153 has a smaller change. Therefore, the value of the external pressure channel can be calculated through the change in resistance value of the flexible force-sensitive composite layer 153.

[0063] In some embodiments, the flexible electrode layer 153a has a resistivity of about 1Ops (Ohm per Square) to about 150Ops (preferably 60Ops), and a thickness of about 1nm to about 200nm (preferably about 40nm to about 80nm). In some embodiments, the thickness of the functional spacer 153b is about 40nm to about 1500nm (preferably about 60nm to about 100nm).

[0064] like Figure 2 As shown, in this embodiment, the flexible force-sensitive composite layer 153 includes two flexible electrode layers 153a and two functional spacer layers 153b. The flexible electrode layers 153a and the functional spacer layers 153b are stacked alternately in sequence. However, the stacking method between the flexible electrode layers 153a and the functional spacer layers 153b is not the same as that between the flexible electrode layers 153a and the functional spacer layers 153b. Figure 1 Limited.

[0065] In some other embodiments, in order to enable the force sensing module 150 to achieve its basic function, the flexible force-sensitive composite layer 153 may also only include one flexible electrode layer 153 a and one functional isolation layer 153 b .

[0066] In some embodiments, the flexible electrode 151 may be an ITO electrode layer or an electrode layer including nano silver wires, but the present invention is not limited thereto.

[0067] Under the above structural configuration, since the force sensing module 150 uses a flexible force-sensitive composite layer 153 with flexibility and good piezoresistive linearity (i.e., comprising a nanosilver wire electrode layer with low resistivity and a functional spacer layer 153b with high resistivity alternately stacked), and cooperates with the flexible cover 110 and the touch display module 130 including the organic light-emitting display unit 131, an electronic device 100A with a three-dimensional touch sensing function can be realized. In addition, by using the metal sheet 160 that is generally used in conjunction with the organic light-emitting display unit 131 as one of the electrodes of the force sensing module 150, the metal sheet 160 also has the following uses: (1) preventing the panel from being scratched; (2) providing a flattening effect; and (3) anti-interference (preventing interference with the signal of the main substrate below); and (4) serving as a contact electrode of the force sensing module 150.

[0068] In some embodiments, at least one of the adhesive layers 120a, 120b, and 120c is optical clear adhesive (OCA), but the present invention is not limited thereto, and liquid OCA (LOCA) or pressure-sensitive adhesive (PSA) may also be selected according to needs.

[0069] In some embodiments, the metal sheet 160 is a copper foil or a steel sheet, but the invention is not limited thereto.

[0070] Please refer to Figure 4 , which is a schematic diagram of a circuit 190 for extracting the pressure signal sensed by the flexible force-sensitive composite layer 153. Figure 1 and Figure 4 As shown, in some embodiments, in order to extract the pressure signal sensed by the flexible force-sensitive composite layer 153, the adjustable resistor R2 of the flexible force-sensitive composite layer 153 can be connected to a voltage divider circuit composed of the peripheral resistor R1, and the pressure signal can be extracted by detecting the change in the Vx value, so that the pressure magnitude can be determined based on the pressure signal.

[0071] Please refer to Figure 5 , which is a schematic diagram of a circuit 190A for extracting the pressure signal sensed by the flexible force-sensitive composite layer 153. Figure 1and Figure 5 As shown, in some embodiments, in order to extract the pressure signal sensed by the flexible force-sensitive composite layer 153, the adjustable resistor R2 of the flexible force-sensitive composite layer 153 can also be connected to the Wheatstone circuit composed of peripheral resistors R1, R3, and R4, and the pressure signal can be extracted by detecting the change in the Vx value, so that the pressure can be judged according to the pressure signal.

[0072] It should be noted that in some embodiments, Figure 1 As shown, the force sensing module 150 is directly manufactured on the metal sheet 160 by a coating process, but the present invention is not limited thereto. Figure 6 . Figure 6 FIG. 1 is a schematic diagram illustrating an electronic device 100B according to an embodiment of the present invention.

[0073] like Figure 6 As shown, the electronic device 100B also includes a flexible cover 110, adhesive layers 120a, 120b, a touch display module 130, a polarizing element 140, a force sensing module 150 and a metal sheet 160. Therefore, the relative positions and functions of these components can refer to the above related descriptions and will not be repeated here. Figure 1 In the embodiment shown, the electronic device 100B of this embodiment further includes a conductive adhesive 170 and a flexible carrier substrate 180. The flexible carrier substrate 180 is disposed between the flexible electrode 151 and the touch display module 130. The conductive adhesive 170 is disposed between the metal sheet 160 and the flexible force-sensitive composite layer 153.

[0074] Specifically, when manufacturing the electronic device 100B, the force sensing module 150 can be firstly manufactured on the flexible supporting substrate 180 by using a coating process, and then the force sensing module 150 can be adhered to the metal sheet 160 by using the conductive adhesive 170. It can be seen that by using the conductive adhesive 170 and the flexible supporting substrate 180, the electronic device 100B of this embodiment can increase process flexibility.

[0075] In some embodiments, the material of the flexible supporting substrate 180 includes polyethylene terephthalate (PET), PI or cyclo olefin polymer (COP), but the present invention is not limited thereto.

[0076] It should be noted that in some embodiments, Figure 1 As shown, the flexible electrode 151 of the force sensing module 150 is a whole piece of structure and can provide a single finger detection function, but the present invention is not limited thereto. Figure 7 . Figure 7FIG. 1 is a schematic diagram illustrating an electronic device 100C according to an embodiment of the present invention.

[0077] like Figure 7 As shown, the electronic device 100C also includes a flexible cover 110, adhesive layers 120a, 120b, a touch display module 130, a polarizing element 140 and a metal sheet 160. Therefore, the relative positions and functions of these elements can refer to the above related descriptions and will not be repeated here. Figure 1 In the illustrated embodiment, the electronic device 100C of this embodiment is modified with respect to the force sensing module 150 .

[0078] Specifically, the flexible electrode 151' of the force sensing module 150' includes a plurality of electrode blocks 151a1 and 151a2. The electrode blocks 151a1 and 151a2 are separated from each other. Figure 1 The flexible electrode 151 is patterned to obtain Figure 7 The flexible electrode 151' includes a plurality of electrode blocks 151a1 and 151a2. Through the electrode blocks 151a1 and 151a2 separated from each other, the force sensing module 150' can achieve multi-finger detection.

[0079] Please refer to Figure 8 . Figure 8 FIG. 1 is a schematic diagram illustrating an electronic device 100D according to an embodiment of the present invention. Figure 8 As shown, the electronic device 100D also includes a flexible cover 110, adhesive layers 120a, 120b, a touch display module 130, a polarizing element 140, a force sensing module 150' and a metal sheet 160. Therefore, the relative positions and functions of these components can refer to the above related descriptions and will not be repeated here. Figure 7 In the embodiment shown, the electronic device 100D of this embodiment further includes a conductive adhesive 170 and a flexible carrier substrate 180. The flexible carrier substrate 180 is disposed between the flexible electrode 151 and the touch display module 130. The conductive adhesive 170 is disposed between the metal sheet 160 and the flexible force-sensitive composite layer 153.

[0080] Specifically, when manufacturing the electronic device 100D, the force sensing module 150' can be firstly manufactured on the flexible supporting substrate 180 by using a coating process, and then the force sensing module 150' can be adhered to the metal sheet 160 by using the conductive adhesive 170. It can be seen that by using the conductive adhesive 170 and the flexible supporting substrate 180, the electronic device 100D of this embodiment can increase process flexibility.

[0081] It should be noted that in some embodiments, Figure 1 and Figures 6 to 8As shown, the touch display module 130 is an out-cell type touch display module, but the present invention is not limited thereto.

[0082] Please refer to Figures 9 to 12 . Figures 9 to 12 Schematic diagrams of electronic devices 100E according to some embodiments of the present invention are respectively shown. Fig.10 FIG. 1 is a schematic diagram illustrating an electronic device 100F according to an embodiment of the present invention. Fig.11 FIG. 1 is a schematic diagram illustrating an electronic device 100G according to an embodiment of the present invention.

[0083] Fig.12 FIG. 1 is a schematic diagram illustrating an electronic device 100H according to an embodiment of the present invention. Figures 9 to 12 The electronic devices 100E, 100F, 100G, and 100H shown in FIG. Figure 1 and Figures 6 to 8 The electronic devices 100A, 100B, 100C, and 100D shown in FIG. 1 are modified. Specifically, Figures 9 to 12 The electronic devices 100E, 100F, 100G, and 100H shown in FIG. 1 are respectively Figure 1 and Figures 6 to 8 The external touch display module 130 in the embodiment is replaced by an integrated on-cell type touch display module 130'. The integrated on-cell type touch display module 130' eliminates the adhesive layer 120c compared to the external touch display module 130. That is, in the integrated on-cell type touch display module 130', the touch sensing layer 132 is directly manufactured on the organic light emitting display unit 131 by a coating process.

[0084] From the above detailed description of the specific embodiments of the present invention, it can be clearly seen that in the electronic device of the present invention, the force sensing module adopts a flexible force-sensitive composite layer with flexibility and good piezoresistive linearity (i.e., comprising a nanosilver wire electrode layer with low resistivity and a functional spacer layer with high resistivity alternately stacked), and cooperates with a flexible cover plate and a touch display module including an organic light-emitting display unit, so that a flexible three-dimensional touch sensing function can be realized. The present invention also uses a metal sheet that is generally used in conjunction with an organic light-emitting display unit as one of the electrodes of the force sensing module, so that the metal sheet also has the following uses: (1) preventing the panel from being scratched; (2) providing a flattening effect; and (3) anti-interference (preventing interference with the signal of the main substrate below); and (4) serving as a contact electrode of the force sensing module.

[0085] Although the present invention has been disclosed as above in the form of an implementation method, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the attached claims.

Claims

1. An electronic device, It is characterized in that Include: a flexible cover; A force sensitive measurement module, including: a flexible electrode; and A flexible force-sensitive composite layer, comprising: At least one flexible electrode layer has a first resistivity; and At least one functional spacer has a second resistivity greater than the first resistivity, wherein The at least one flexible electrode layer and the at least one functional spacer layer are stacked under the flexible electrode; a touch display module, disposed between the flexible cover and the force sensing module, and comprising an organic light emitting display unit and a touch sensing layer; and A metal sheet is disposed under the force sensing module and serves as a contact electrode of the force sensing module. The at least one flexible electrode layer comprises a matrix and silver nanowires doped in the matrix, wherein the silver nanowires partially protrude from the matrix, and the at least one flexible electrode layer is configured to be compressed by force so that the silver nanowires approach and pass through the at least one functional spacer. The at least one functional spacer is a matrix layer doped with a low concentration of nano silver wires, The pressure signal of the flexible force-sensitive composite layer is extracted by a circuit, and two ends of the circuit are respectively coupled to the flexible electrode and the metal sheet.

2. The electronic device according to claim 1, It is characterized in that The touch display module is an external touch display module or an integrated embedded touch display module.

3. The electronic device according to claim 1, It is characterized in that The metal sheet is a copper foil or a steel sheet.

4. The electronic device according to claim 1, It is characterized in that The flexible electrode is located between the flexible force-sensitive composite layer and the touch display module.

5. The electronic device according to claim 4, It is characterized in that It further comprises a conductive glue, which is arranged between the metal sheet and the flexible force-sensitive composite layer.

6. The electronic device according to claim 4, It is characterized in that It further comprises a flexible supporting substrate, which is arranged between the flexible electrode and the touch display module.

7. The electronic device according to claim 4, It is characterized in that The flexible electrode includes a plurality of electrode blocks, and the plurality of electrode blocks are separated from each other.

8. The electronic device according to claim 1, It is characterized in that The device further comprises a polarizing element, which is arranged between the flexible cover plate and the touch display module.

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