Three-dimensional sensing module, manufacturing method thereof, and electronic device

Abstract

A three-dimensional sensing module, a manufacturing method thereof, and an electronic device, wherein the three-dimensional sensing module includes a touch pressure-sensing structure. The touch pressure-sensing structure includes a first functional spacer, a first light-transmitting electrode layer coated on the first functional spacer, a second functional spacer coated on the first light-transmitting electrode layer, a second light-transmitting electrode layer coated on the second functional spacer, and a third functional spacer coated on the second light-transmitting electrode layer. The resistivity of the first, second, and third functional spacer layers is greater than the resistivity of the first and second light-transmitting electrode layers. Compared to the known complicated method of separately manufacturing the touch module and the display module and then gluing them together, the manufacturing process of the three-dimensional sensing module of the present invention can completely eliminate the use of bonding glue, thereby reducing the number of bonding processes and the thickness of the bonding glue, thereby achieving a thin design for the three-dimensional sensing module of the present invention.

Description

Technical Field

[0001] The invention relates to a three-dimensional sensing module, a manufacturing method thereof, and an electronic device. Background Art

[0002] With the diverse development of touch modules, their application in industrial and consumer electronics has matured. The need to determine the two-dimensional position of a touch point on a screen surface (e.g., along the X and Y axes) has evolved to the need to detect force parameters resulting from changes in force applied to the screen surface (e.g., along the Z axis). Furthermore, the need for flexible panels is inevitable.

[0003] However, the pressure sensors in touch modules using the conventional technologies proposed by the industry have the following problems: (1) the XYZ three-axis electrodes cannot simultaneously possess flexibility and thus cannot be used as a flexible assembly; and (2) only a local area has the Z-axis sensing function.

[0004] Therefore, how to propose a three-dimensional sensing module that can solve the above problems is one of the issues 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 a three-dimensional sensing module that can solve the above-mentioned problems.

[0006] To achieve the above objectives, according to one embodiment of the present invention, a three-dimensional sensing module includes a touch pressure sensing structure. The touch pressure sensing structure includes a first functional barrier layer, a first light-transmitting electrode layer, a second functional barrier layer, a second light-transmitting electrode layer, and a third functional barrier layer. The first light-transmitting electrode layer is coated on the first functional barrier layer. The second functional barrier layer is coated on the first light-transmitting electrode layer. The second light-transmitting electrode layer is coated on the second functional barrier layer. The third functional barrier layer is coated on the second light-transmitting electrode layer. The resistivity of the first, second, and third functional barrier layers is greater than the resistivity of the first and second light-transmitting electrode layers.

[0007] In one or more embodiments of the present invention, the touch-pressure sensing structure further includes a first flexible touch electrode layer and a second flexible touch electrode layer. A first functional barrier layer is coated on the first flexible touch electrode layer. The second flexible touch electrode layer is coated on the third functional barrier layer. The 3D sensing module further includes a flexible cover plate. The flexible cover plate is disposed on the second flexible touch electrode layer.

[0008] In one or more embodiments of the present invention, the three-dimensional sensing module further includes a controller configured to detect touch position signals and pressure signals via the first flexible touch electrode layer and the second flexible touch electrode layer.

[0009] In one or more embodiments of the present invention, at least one of the first flexible touch electrode layer, the first light-transmitting electrode layer, the second light-transmitting electrode layer, and the second flexible touch electrode layer is a silver nanowire electrode layer.

[0010] In one or more embodiments of the present invention, the first and second flexible touch electrode layers have a resistivity of 10 ps to 150 ps. The first and second light-transmitting electrode layers have a resistivity of 150 ps to 500 ps. The second functional barrier layer has a resistivity of 500 ps to 1000 ps. The first and third functional barrier layers have a resistivity of 800 ps to 1200 ps.

[0011] In one or more embodiments of the present invention, the first functional spacer layer and the third functional spacer layer have substantially the same thickness.

[0012] In one or more embodiments of the present invention, the thickness of the second functional barrier layer is smaller than the thickness of at least one of the first functional barrier layer and the third functional barrier layer.

[0013] In one or more embodiments of the present invention, the thickness of the second functional spacer layer is 30 nm to 100 nm, and the thickness of the first functional spacer layer and the third functional spacer layer is 400 nm to 1200 nm.

[0014] In one or more embodiments of the present invention, the first light-transmitting electrode layer and the second light-transmitting electrode layer each include a plurality of electrode blocks, and the electrode blocks are separated from each other.

[0015] In one or more embodiments of the present invention, at least one of the first functional spacer layer, the second functional spacer layer, and the third functional spacer layer is a matrix layer doped with low-concentration silver nanowires.

[0016] To achieve the above-mentioned object, according to one embodiment of the present invention, an electronic device includes the aforementioned three-dimensional sensing module and a display module. The display module is disposed below the three-dimensional sensing module.

[0017] To achieve the above-mentioned objectives, according to one embodiment of the present invention, a method for manufacturing a three-dimensional sensing module includes: forming a first flexible touch electrode layer; coating a transparent force-sensitive composite layer on the first flexible touch electrode layer, wherein the transparent force-sensitive composite layer includes at least one transparent electrode layer and at least one functional partition layer, and the resistivity of the transparent electrode layer is less than the resistivity of the functional partition layer; and coating a second flexible touch electrode layer on the transparent force-sensitive composite layer.

[0018] In one or more embodiments of the present invention, the step of coating a transparent force-sensitive composite layer includes: coating a first functional spacer on the first flexible touch electrode layer; coating a first transparent electrode layer on the first functional spacer; coating a second functional spacer on the first transparent electrode layer; coating a second transparent electrode layer on the second functional spacer; and coating a third functional spacer on the second transparent electrode layer.

[0019] In summary, in the 3D sensing module of the present invention, the touch and pressure sensing structure is composed of two flexible touch electrode layers and a transparent force-sensitive composite layer stacked therebetween, thereby simultaneously providing two-dimensional (e.g., X-axis and Y-axis) touch position signals and a third-dimensional (e.g., Z-axis) pressure sensing signal. The 3D sensing module of the present invention can be simply manufactured through a multi-pass coating process. Therefore, compared to the conventional method of separately manufacturing the touch module and display module and then gluing them together, the manufacturing process of the 3D sensing module of the present invention can completely eliminate the use of laminating glue, thereby reducing the number of gluing processes and the thickness of the laminating glue, thereby achieving a thinner design for the 3D sensing module of the present invention.

[0020] 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 embodiments and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To make the above and other objects, features, advantages and embodiments of the present invention more apparent, the accompanying drawings are described as follows:

[0022] Figure 1 is a schematic diagram illustrating an electronic device according to one embodiment of the present invention;

[0023] Figure 2 To illustrate Figure 1 A partial perspective view of some components of the electronic device;

[0024] Figure 3A To illustrate Figure 1 A partial enlarged view of the light-transmitting force-sensitive composite layer when it is not pressed;

[0025] Figure 3B To illustrate Figure 1 A partial enlarged view of the light-transmitting force-sensitive composite layer when it is pressed;

[0026] Figure 4 is a schematic diagram illustrating an electronic device according to another embodiment of the present invention;

[0027] Figure 5 FIG. 4 is a flow chart illustrating a method for manufacturing a three-dimensional sensing module according to an embodiment of the present invention.

[0028]

Explanation of symbols

[0029] 100,200: Electronic devices

[0030] 110,210: 3D sensing module

[0031] 111,211: Touch pressure sensing structure

[0032] 111a1: first flexible touch electrode layer

[0033] 111a2: second flexible touch electrode layer

[0034] 111b, 211b: light-transmitting force-sensitive composite layer

[0035] 111b11: First functional compartment

[0036] 111b12: Second functional compartment

[0037] 111b13: The third functional compartment

[0038] 111b21, 211b21: first light-transmitting electrode layer

[0039] 111b22, 211b22: second light-transmitting electrode layer

[0040] 112: Flexible cover

[0041] 113:Controller

[0042] 120: Display module

[0043] L1, L2: nano silver wire

[0044] S101, S102, S103: Steps DETAILED DESCRIPTION

[0045] The following drawings illustrate various embodiments of the present invention. For clarity, many practical details are included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some well-known and conventional structures and components are depicted in simplified schematic form.

[0046] Please refer to Figure 1 as well as Figure 2 . Figure 1 FIG. 1 is a schematic diagram illustrating an electronic device 100 according to an embodiment of the present invention. Figure 2 To illustrate Figure 1 A partial perspective view of some components of the electronic device 100. Figure 1and Figure 2 As shown, the electronic device 100 of this embodiment is a touch display device as an example, which includes a three-dimensional sensing module 110 and a display module 120. The display module 120 is disposed below the three-dimensional sensing module 110.

[0047] Specifically, the 3D sensing module 110 includes a touch-sensitive pressure-sensing structure 111 and a flexible cover 112. The touch-sensitive pressure-sensing structure 111 includes a first flexible touch electrode layer 111a1, a second flexible touch electrode layer 111a2, and a transparent force-sensitive composite layer 111b located between the first and second flexible touch electrode layers 111a1 and 111a2. The transparent force-sensitive composite layer 111b includes a first functional barrier layer 111b11, a first transparent electrode layer 111b21, a second functional barrier layer 111b12, a second transparent electrode layer 111b22, and a third functional barrier layer 111b13. The first functional barrier layer 111b11 is coated on the first flexible touch electrode layer 111a1. The first transparent electrode layer 111b21 is coated on the first functional barrier layer 111b11. The second functional barrier layer 111b12 is coated on the first light-transmitting electrode layer 111b21. The second light-transmitting electrode layer 111b22 is coated on the second functional barrier layer 111b12. The third functional barrier layer 111b13 is coated on the second light-transmitting electrode layer 111b22. The resistivity of the first, second, and third functional barrier layers 111b11, 111b12, and 111b13 is greater than that of the first and second light-transmitting electrode layers 111b21, 111b22. The second flexible touch electrode layer 111a2 is coated on the third functional barrier layer 111b13. The flexible cover 112 is disposed on the second flexible touch electrode layer 111a2.

[0048] In some embodiments, the material of the flexible cover 112 includes a flexible polymer material. For example, the flexible polymer material includes colorless polyimide (PI), but the present invention is not limited thereto.

[0049] like Figure 1 As shown, the three-dimensional sensing module 110 further includes a controller 113. The controller 113 is electrically connected to the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2. Figure 2 As shown, the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2 are both patterned electrode layers. The patterns are for illustrative purposes only and are not intended to limit the scope of the present invention. The principle by which the controller 113 detects touch position signals via the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2 will not be described in detail here; reference is made to existing related art.

[0050] In some embodiments, at least one of the first flexible touch electrode layer 111a1, the first light-transmitting electrode layer 111b21, the second light-transmitting electrode layer 111b22, and the second flexible touch electrode layer 111a2 may be composed of a silver nanowire (SNW; also known as AgNW) electrode layer, a metal mesh, or an indium tin oxide (ITO) electrode layer, but the present invention is not limited thereto.

[0051] In some embodiments, the light-transmitting force-sensitive composite layer 111b has an optical transmittance greater than 85% and a haze less than 3%. To ensure that the light-transmitting force-sensitive composite layer 111b meets the aforementioned optical transmittance and haze requirements, in some embodiments, at least one of the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 is a silver nanowire electrode layer.

[0052] Please refer to Figure 3A , which is a drawing Figure 1 A partial enlarged view of the light-transmitting force-sensitive composite layer 111b when it is not pressed. Figure 3A As shown, the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 each comprise a matrix and silver nanowires doped therein. The silver nanowires overlap within the matrix to form a conductive network. The matrix refers to a non-silver nanowire material formed by coating, heating, and drying a solution containing silver nanowires. The silver nanowires are dispersed or embedded within the matrix and partially protrude from the matrix. The matrix protects the silver nanowires from environmental influences such as corrosion and abrasion. In some embodiments, the matrix is ​​compressible. In some embodiments, the silver nanowires have a length of approximately 10 μm to approximately 300 μm. In some embodiments, the silver nanowires have a diameter (or width) of less than approximately 500 nm. In some embodiments, the silver nanowires have an aspect ratio (ratio of length to diameter) greater than 10. In some embodiments, the silver nanowires may be a modified form, such as a silver-plated surface on other conductive metal nanowires or non-conductive nanowires. The use of nano silver wires to form a nano silver wire electrode layer has the following advantages: lower price compared to ITO, simpler process, better flexibility, and ability to withstand bending.

[0053] In order to make the light-transmitting force-sensitive composite layer 111b meet the aforementioned requirements of optical transmittance and haze, in some embodiments, the first functional barrier layer 111b11, the second functional barrier layer 111b12 and the third functional barrier layer 111b13 in the light-transmitting force-sensitive composite layer 111b may be light-transmitting coatings. Figure 3AAs shown, at least one of the first functional barrier layer 111b11, the second functional barrier layer 111b12, and the third functional barrier layer 111b13 may be a matrix layer doped with a low concentration of silver nanowires. Specifically, the first functional barrier layer 111b11, the second functional barrier layer 111b12, and the third functional barrier layer 111b13 each comprise a matrix layer doped with a low concentration of silver nanowires. This results in the first functional barrier layer 111b11, the second functional barrier layer 111b12, and the third functional barrier layer 111b13 having a higher resistivity than the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22, and also provides the first functional barrier layer 111b11, the second functional barrier layer 111b12, and the third functional barrier layer 111b13 with greater optical transmittance. In some embodiments, the matrix of the first functional partition layer 111b11, the second functional partition layer 111b12, and the third functional partition layer 111b13 is the same as that of the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22, but the present invention is not limited thereto.

[0054] In some embodiments, the resistivity of the first functional barrier layer 111b11, the second functional barrier layer 111b12, and the third functional barrier layer 111b13 is about 3 to about 50 times that of the first transparent electrode layer 111b21 and the second transparent electrode layer 111b22, but the present invention is not limited thereto.

[0055] In some embodiments, the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2 have a resistivity of approximately 1 ohm per square (Ohm per Square) to approximately 150 ohms (Ohm per Square), preferably 60 ohms, but the present invention is not limited thereto. In some embodiments, the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 have a resistivity of approximately 150 ohms to approximately 500 ohms (Ohm per Square), preferably 300 ohms, but the present invention is not limited thereto. In some embodiments, the second functional barrier layer 111b12 has a resistivity of approximately 500 ohms to approximately 1000 ohms (Ohm per Square), preferably 600 ohms, but the present invention is not limited thereto. In some embodiments, the first functional barrier layer 111b11 and the third functional barrier layer 111b13 have a resistivity of approximately 800 ohms to approximately 1200 ohms (Ohm per Square), preferably 800 ohms, but the present invention is not limited thereto.

[0056] In practical applications, resistivity measurements can be used to verify whether the doped silver nanowires have a high concentration (e.g., in the first and second light-transmitting electrode layers 111b21 and 111b22) or a low concentration (e.g., in the first, second, and third functional barrier layers 111b11, 111b12, and 111b13). Furthermore, the resistivity differences among the first, second, and third functional barrier layers 111b11, 111b12, and 111b13, all doped with low concentrations of silver nanowires, are related to their thickness.

[0057] Please refer to Figure 3B , which is a drawing Figure 1 A partial enlarged view of the light-transmitting force-sensitive composite layer 111b being pressed. Figure 3A and Figure 3B As shown, since the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 are made of nano-silver wires, when the external pressing force from the side of the flexible cover plate 112 is transmitted to the light-transmitting force-sensitive composite layer 111b, the first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 are compressed by the force, causing the nano-silver wires therein to approach and pass through the first functional spacer layer 111b11, the second functional spacer layer 111b12 and the third functional spacer layer 111b13, increasing the number of overlapping points, thereby improving the overall conductivity of the light-transmitting force-sensitive composite layer 111b (that is, reducing the resistivity). For example, Figure 3A As shown, when the light-transmitting force-sensitive composite layer 111b is not pressed, the silver nanowires L1 in the first light-transmitting electrode layer 111b21 and the silver nanowires L2 in the second functional spacer layer 111b12 are not overlapped with each other. Figure 3B As shown, when the light-transmitting force-sensitive composite layer 111b is pressed, the silver nanowires L1 within the first light-transmitting electrode layer 111b21 further penetrate into the second functional barrier layer 111b12 and overlap with the silver nanowires L2. Therefore, by detecting the change in resistance of the light-transmitting force-sensitive composite layer 111b through electrical communication between the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2, the controller 113 can calculate the magnitude of the external pressure channel. For example, if the external pressure channel is large, the resistance of the light-transmitting force-sensitive composite layer 111b will change significantly; conversely, if the external pressure channel is small, the resistance of the light-transmitting force-sensitive composite layer 111b will change slightly. Therefore, the magnitude of the external pressure channel can be calculated based on the change in resistance of the light-transmitting force-sensitive composite layer 111b.

[0058] In some embodiments, the controller 113 may detect the touch position signal and the pressure signal simultaneously. In other embodiments, the controller 113 may detect the touch position signal and the pressure signal separately in time sequence.

[0059] In some embodiments, the thickness of the second functional barrier layer 111b12 is about 30 nm to about 100 nm (preferably about 40 nm to about 80 nm).

[0060] As can be seen from the above-mentioned structural configuration, the touch pressure-sensing structure 111 of this embodiment is composed of a first flexible touch electrode layer 111a1, a second flexible touch electrode layer 111a2, and a transparent force-sensitive composite layer 111b stacked therebetween. Therefore, it not only realizes an integrated structural design with the characteristics of high transmittance and high flexibility, but also can simultaneously provide two-dimensional (for example, X-axis direction and Y-axis direction) touch position signals and third-dimensional (for example, Z-axis direction) pressure-sensing signals.

[0061] In some embodiments, the first functional barrier layer 111b11 and the third functional barrier layer 111b13 have substantially the same thickness. For example, the thickness of the first functional barrier layer 111b11 and the third functional barrier layer 111b13 is approximately 400 nm to approximately 1200 nm (preferably approximately 600 nm to approximately 900 nm). Therefore, the thickness of the second functional barrier layer 111b12 is less than the thickness of the first functional barrier layer 111b11 and the third functional barrier layer 111b13.

[0062] The aforementioned structural configuration increases the impedance between the light-transmitting force-sensitive composite layer 111b and the first and second flexible touch electrode layers 111a1 and 111a2, respectively. Consequently, when the controller 113 detects touch position signals, the capacitive sensing signals obtained via the first and second flexible touch electrode layers 111a1 and 111a2 are less susceptible to interference from the light-transmitting force-sensitive composite layer 111b and are therefore clearer.

[0063] It should be noted that in some embodiments, Figure 1 As shown, the first transparent electrode layer 111b21 and the second transparent electrode layer 111b22 of the transparent force-sensitive composite layer 111b are each a single piece structure and can provide a single finger detection function, but the present invention is not limited thereto. Figure 4 . Figure 4 FIG. 1 is a schematic diagram illustrating an electronic device 200 according to another embodiment of the present invention.

[0064] like Figure 4As shown, the electronic device 200 includes a three-dimensional sensing module 210 and a display module 120. The three-dimensional sensing module 210 includes a touch pressure sensing structure 211 and a flexible cover 112. The touch pressure sensing structure 211 includes a first flexible touch electrode layer 111a1, a second flexible touch electrode layer 111a2, and a transparent force-sensitive composite layer 211b located between the first flexible touch electrode layer 111a1 and the second flexible touch electrode layer 111a2. The transparent force-sensitive composite layer 211b includes a first functional partition layer 111b11, a first transparent electrode layer 211b21, a second functional partition layer 111b12, a second transparent electrode layer 211b22, and a third functional partition layer 111b13. Compared to Figure 1 In the embodiment shown, the electronic device 200 of this embodiment is modified with respect to the first light-transmitting electrode layer 211 b 21 and the second light-transmitting electrode layer 211 b 22 .

[0065] Specifically, the first light-transmitting electrode layer 211b21 and the second light-transmitting electrode layer 211b22 each include a plurality of electrode blocks. The electrode blocks are separated from each other. Figure 1 The first light-transmitting electrode layer 111b21 and the second light-transmitting electrode layer 111b22 are patterned to obtain Figure 4 The first light-transmitting electrode layer 211b21 and the second light-transmitting electrode layer 211b22 comprise a plurality of electrode blocks. By separating the electrode blocks from each other, the force-sensing module can achieve multi-finger detection.

[0066] Please refer to Figure 5 , which is a flow chart illustrating a method for manufacturing a three-dimensional sensing module according to one embodiment of the present invention. Figure 5 As shown, the three-dimensional sensing module manufacturing method includes steps S101 to S103.

[0067] In step S101 , a first flexible touch electrode layer is formed.

[0068] In step S102 , a transparent force-sensitive composite layer is coated on the first flexible touch electrode layer, wherein the transparent force-sensitive composite layer includes at least one transparent electrode layer and at least one functional spacer layer, and the resistivity of the transparent electrode layer is lower than that of the functional spacer layer.

[0069] In step S103 , a second flexible touch electrode layer is coated on the light-transmitting force-sensitive composite layer.

[0070] In some embodiments, step S102 includes steps S102a to S102e.

[0071] In step S102a, a first functional spacer layer is coated on the first flexible touch electrode layer.

[0072] In step S102b, a first light-transmitting electrode layer is coated on the first functional barrier layer.

[0073] In step S102c, the second functional barrier layer is coated on the first light-transmitting electrode layer.

[0074] In step S102d, a second light-transmitting electrode layer is coated on the second functional barrier layer.

[0075] In step S102e, a third functional barrier layer is coated on the second light-transmitting electrode layer.

[0076] In some embodiments, the coating process in the aforementioned steps includes a spin coating process or a slit die coating process, but the present invention is not limited thereto.

[0077] In some embodiments, a step of patterning the first light-transmitting electrode layer may be added between step S102b and step S102c, and a step of patterning the second light-transmitting electrode layer may be added between step S102d and step S102e.

[0078] From the above detailed description of the specific embodiments of the present invention, it can be clearly seen that in the three-dimensional sensing module of the present invention, the touch pressure sensing structure is composed of two flexible touch electrode layers and a transparent force-sensitive composite layer stacked therebetween, thereby simultaneously providing a two-dimensional touch position signal and a third-dimensional pressure sensing signal. The three-dimensional sensing module of the present invention can be simply completed through a multi-pass coating process. Therefore, compared to the known complicated method of separately manufacturing the touch module and the display module and then gluing them together, the manufacturing process of the three-dimensional sensing module of the present invention can completely eliminate the use of bonding glue, thereby reducing the multiple bonding processes and the thickness of the bonding glue, thereby allowing the three-dimensional sensing module of the present invention to achieve a thin design.

[0079] Although the present invention has been disclosed above in terms of embodiments, this is not intended to limit the present invention. Anyone skilled in the art may 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 determined by the scope defined in the appended claims.

Claims

1. A three-dimensional sensing module, characterized in that: A touch pressure sensing structure is included, and the touch pressure sensing structure includes: a first functional compartment; a first light-transmitting electrode layer coated on the first functional barrier layer, wherein the first light-transmitting electrode layer comprises a matrix and silver nanowires doped therein; a second functional spacer layer coated on the first light-transmitting electrode layer; a second light-transmitting electrode layer coated on the second functional barrier layer, wherein the second light-transmitting electrode layer comprises a matrix and silver nanowires doped therein; a third functional spacer layer coated on the second light-transmitting electrode layer, wherein the resistivity of the first functional spacer layer, the second functional spacer layer, and the third functional spacer layer is greater than the resistivity of the first light-transmitting electrode layer and the second light-transmitting electrode layer; a first flexible touch electrode layer, wherein the first functional spacer layer is coated on the first flexible touch electrode layer; and A second flexible touch electrode layer is coated on the third functional spacer layer. The three-dimensional sensing module further includes a flexible cover plate, which is disposed on the second flexible touch electrode layer. At least one of the first functional spacer layer, the second functional spacer layer, and the third functional spacer layer is a matrix layer doped with a low concentration of nano silver wires. The thickness of the second functional interlayer is 30 nm to 100 nm, and the thickness of the first functional interlayer and the third functional interlayer is 400 nm to 1200 nm. The first light-transmitting electrode layer and the second light-transmitting electrode layer are configured to be compressed so that the silver nanowires therein approach and pass through the first functional spacer layer, the second functional spacer layer and the third functional spacer layer. The three-dimensional sensing module further includes a controller configured to detect a touch position signal and a pressure signal via the first flexible touch electrode layer and the second flexible touch electrode layer.

2. The three-dimensional sensing module according to claim 1, wherein: At least one of the first flexible touch electrode layer, the first light-transmitting electrode layer, the second light-transmitting electrode layer and the second flexible touch electrode layer is a nanosilver wire electrode layer.

3. The three-dimensional sensing module according to claim 1, wherein: The first flexible touch electrode layer and the second flexible touch electrode layer have a resistivity of 1Ops to 150Ops, the first transparent electrode layer and the second transparent electrode layer have a resistivity of 150Ops to 500Ops, the second functional spacer has a resistivity of 500Ops to 1000Ops, and the first functional spacer and the third functional spacer have a resistivity of 800Ops to 1200Ops.

4. The three-dimensional sensing module according to claim 1, wherein: The first functional spacer layer and the third functional spacer layer have substantially the same thickness.

5. The three-dimensional sensing module according to claim 1, wherein: The first light-transmitting electrode layer and the second light-transmitting electrode layer each include a plurality of electrode blocks, and the plurality of electrode blocks are separated from each other.

6. An electronic device, characterized in that: Include: A three-dimensional sensing module according to any one of claims 1 to 5; and A display module is disposed below the three-dimensional sensing module.

7. A method for manufacturing a three-dimensional sensing module, characterized in that: Include: forming a first flexible touch electrode layer; Coating a light-transmitting force-sensitive composite layer on the first flexible touch electrode layer, wherein the light-transmitting force-sensitive composite layer comprises at least one light-transmitting electrode layer and at least one functional spacer layer, and the resistivity of the at least one light-transmitting electrode layer is lower than the resistivity of the at least one functional spacer layer; and Coating a second flexible touch electrode layer on the light-transmitting force-sensitive composite layer, The step of coating the light-transmitting force-sensitive composite layer comprises: coating a first functional spacer layer on the first flexible touch electrode layer; Coating a first light-transmitting electrode layer on the first functional spacer layer, wherein the first light-transmitting electrode layer comprises a matrix and silver nanowires doped therein; coating a second functional spacer layer on the first light-transmitting electrode layer; coating a second light-transmitting electrode layer on the second functional barrier layer, wherein the second light-transmitting electrode layer comprises a matrix and silver nanowires doped therein; and Coating a third functional spacer layer on the second light-transmitting electrode layer, At least one of the first functional spacer layer, the second functional spacer layer, and the third functional spacer layer is a matrix layer doped with a low concentration of nano silver wires. The thickness of the second functional interlayer is 30 nm to 100 nm, and the thickness of the first functional interlayer and the third functional interlayer is 400 nm to 1200 nm. The first light-transmitting electrode layer and the second light-transmitting electrode layer are configured to be compressed so that the silver nanowires therein are close to and pass through the first functional spacer layer, the second functional spacer layer and the third functional spacer layer.

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