Force sensitive measuring module, manufacturing method thereof and electronic device

Abstract

A force sensing module and a manufacturing method thereof and an electronic device, wherein the force sensing module comprises a first transparent electrode, a second transparent electrode and a light-transmitting force-sensitive composite layer. The light-transmitting force-sensitive composite layer comprises at least one light-transmitting electrode layer and at least one functional spacer. The light-transmitting electrode layer has a first resistivity. The functional spacer has a second resistivity greater than the first resistivity. The light-transmitting electrode layer and the functional spacer are stacked between the first transparent electrode and the second transparent electrode. The light-transmitting force-sensitive composite layer has an optical transmittance greater than 85% and a haze less than 3%. Since the light-transmitting force-sensitive composite layer has good optical properties (i.e., high optical transmittance and low haze) and a good force-resistance characteristic curve (i.e., tending to linear change), the force sensing module can be disposed between the cover plate and the display module of the electronic device, and has greater flexibility in integrated design.

Description

Technical Field

[0001] The invention relates to a force sensitive measuring module and a manufacturing method thereof and 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), and even the need to determine the level of pressure in the Z-axis direction.

[0003] However, the known technologies proposed by the industry have the following problems with the pressure sensors mounted on the touch module: (1) the pressure sensor is an opaque unit and can only be disposed on the other side of the display module relative to the touch module in order not to affect the display transmittance, thus limiting the flexibility of the integrated design; (2) since the opaque pressure sensor (Z-axis sensing) and the transparent touch panel (XY-axis sensing) are disposed on both sides of the display module, there is a considerable distance between the pressure sensor and the actual pressing surface of the operator, which will result in a distortion effect in force transmission; and (3) it must be attached to the back side of the touch display and cannot be implemented externally.

[0004] Therefore, how to propose a force sensing module and 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 a force sensing module and an electronic device that can solve the above problems.

[0006] In order to achieve the above-mentioned object, according to one embodiment of the present invention, a force sensing module comprises a first transparent electrode, a second transparent electrode and a light-transmitting force-sensitive composite layer. The light-transmitting force-sensitive composite layer comprises at least one light-transmitting electrode layer and at least one functional spacer. The light-transmitting electrode layer has a first resistivity. The functional spacer has a second resistivity greater than the first resistivity. The light-transmitting electrode layer and the functional spacer are stacked between the first transparent electrode and the second transparent electrode. The light-transmitting force-sensitive composite layer has an optical transmittance greater than 85% and a haze less than 3%.

[0007] In one or more embodiments of the present invention, the light-transmitting electrode layer is a silver nanowire electrode layer.

[0008] In one or more embodiments of the present invention, the functional spacer layer is a matrix layer doped with low-concentration nanosilver wires.

[0009] In one or more embodiments of the present invention, the substrate layer is compressible.

[0010] In one or more embodiments of the present invention, the number of the light-transmitting electrode layers is two, and the functional spacer layer is stacked between the two light-transmitting electrode layers.

[0011] In one or more embodiments of the present invention, the number of the functional spacer layers is two, and the light-transmitting electrode layer is stacked between the two functional spacer layers.

[0012] In one or more embodiments of the present invention, the value of the L* axis of the light-transmitting force-sensitive composite layer in the CIELAB color space is about 90 to about 98.

[0013] In one or more embodiments of the present invention, the value of the a* axis of the CIELAB color space of the light-transmitting force-sensitive composite layer is about -2.0 to about 0.

[0014] In one or more embodiments of the present invention, the value of the b* axis of the CIELAB color space of the light-transmitting force-sensitive composite layer is about -2 to about 6.

[0015] To achieve the above object, according to one embodiment of the present invention, an electronic device includes a cover plate, a display module, a touch module and the force sensing module. The touch module is disposed between the cover plate and the display module. The force sensing module is disposed between the cover plate and the display module.

[0016] In one or more embodiments of the present invention, the touch module is stacked between the cover plate and the force sensing module.

[0017] In one or more embodiments of the present invention, the touch module is an OGS-SITO touch module or a GF touch module.

[0018] In one or more embodiments of the present invention, the force sensing module is stacked between the cover plate and the touch module.

[0019] In one or more embodiments of the present invention, the touch module is a GF2 touch module or a GFF touch module.

[0020] In one or more embodiments of the present invention, the touch module includes a silver nanowire electrode.

[0021] In order to achieve the above-mentioned purpose, according to one embodiment of the present invention, a method for manufacturing a force sensing module includes: (a) forming a translucent force-sensitive composite layer on a first transparent electrode, wherein the translucent force-sensitive composite layer includes a translucent electrode layer and a functional spacer layer, and the first resistivity of the translucent electrode layer is less than the second resistivity of the functional spacer layer; and (b) forming a second transparent electrode on the translucent force-sensitive composite layer.

[0022] In one or more embodiments of the present invention, step (a) includes: (a1) coating a conductive coating on the first transparent electrode; (a2) baking the conductive coating to form a light-transmitting electrode layer; (a3) ​​coating a functional coating on the first transparent electrode; and (a4) baking the functional coating to form a functional barrier layer.

[0023] In one or more embodiments of the present invention, step (a1) is performed before step (a3).

[0024] In one or more embodiments of the present invention, step (a1) is performed later than step (a3).

[0025] In one or more embodiments of the present invention, the method for manufacturing a force sensing module further comprises: (a5) repeating steps (a1) to (a4) at least once.

[0026] In summary, in the force sensing module and electronic device of the present invention, the light-transmitting force-sensitive composite layer formed by stacking a light-transmitting electrode layer with low resistivity and a functional interlayer with high resistivity can have good optical properties (i.e., high optical transmittance and low haze) and a good force-resistance characteristic curve (i.e., tending to linear change). Therefore, the force sensing module of the present invention can be arranged between the cover plate and the display module of the electronic device, and has greater flexibility in integrated design. Moreover, since the force sensing module and the touch module can be arranged on the same side of the display module facing the cover plate, the force transmission distortion effect faced by the known technology can be effectively reduced.

[0027] 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

[0028] 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:

[0029] Figure 1 is a schematic diagram illustrating an electronic device according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram illustrating an electronic device according to another embodiment of the present invention;

[0031] Figure 3 A schematic diagram illustrating a force sensing module according to an embodiment of the present invention;

[0032] Figure 4 A schematic diagram illustrating a light-transmitting force-sensitive composite layer according to one embodiment of the present invention;

[0033] Figure 5A To illustrate Figure 4 A partial enlarged view of the light-transmitting force-sensitive composite layer when it is not pressed;

[0034] Figure 5B To illustrate Figure 4 The enlarged partial view of the light-transmitting force-sensitive composite layer when it is pressed is shown;

[0035] Fig. 6A A schematic diagram illustrating a light-transmitting force-sensitive composite layer according to another embodiment of the present invention;

[0036] Figure 6B A schematic diagram illustrating a light-transmitting force-sensitive composite layer according to another embodiment of the present invention;

[0037] Figure 6C A schematic diagram illustrating a light-transmitting force-sensitive composite layer according to another embodiment of the present invention;

[0038] Figure 7 FIG. 4 is a flow chart illustrating a method for manufacturing a force sensing module according to an embodiment of the present invention.

[0039]

Explanation of symbols

[0040] 100,100A:Electronic devices

[0041] 110: Cover

[0042] 120a, 120b, 120c, 120d, 120e: adhesive layer

[0043] 130: Force sensitive measurement module

[0044] 131,131A: Light-transmitting force-sensitive composite layer

[0045] 131a: light-transmitting electrode layer

[0046] 131b: Functional compartment

[0047] 132: first transparent electrode

[0048] 133: second transparent electrode

[0049] 140: Touch module

[0050] 150: Display module

[0051] S101, S102: Steps 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 of an electronic device 100 according to an embodiment of the present invention. Figure 1 As shown, the electronic device 100 of this embodiment is a touch display device as an example, which includes a cover plate 110, adhesive layers 120a, 120b, 120c, a display module 150, a touch module 140 and a force sensing module 130. The touch module 140 is disposed between the cover plate 110 and the display module 150. The force sensing module 130 is disposed between the cover plate 110 and the display module 150. Specifically, the force sensing module 130 is stacked between the cover plate 110 and the touch module 140. The touch module 140 is stacked between the force sensing module 130 and the display module 150. That is, the force sensing module 130 is located on a side of the touch module 140 close to the cover plate 110, and the touch module 140 is located on a side of the force sensing module 130 close to the display module 150. The adhesive layer 120a is adhered between the cover plate 110 and the force sensing module 130. The adhesive layer 120 b is adhered between the force sensing module 130 and the touch module 140 . The adhesive layer 120 c is adhered between the touch module 140 and the display module 150 .

[0054] In some embodiments, Figure 1 The touch module 140 shown in the figure may be a GF2 (Glass-Film-Doubleside) type touch module or a GFF (Glass-Film-Film) type touch module, but the present invention is not limited thereto. Specifically, the aforementioned GF2 type means that the touch driving electrodes and the touch sensing electrodes of the touch module 140 are distributed on both sides of the same substrate. The aforementioned GFF type means that the touch driving electrodes and the touch sensing electrodes of the touch module 140 are distributed on two substrates respectively.

[0055] In some embodiments, the material of the cover plate 110 includes glass or a flexible polymer material, but the invention is not limited thereto.

[0056] In some embodiments, at least one of the touch driving electrode and the touch sensing electrode of the touch module 140 may be composed of a nanosilver wire electrode layer, a metal grid, or an indium tin oxide (ITO) electrode layer, but the present invention is not limited thereto.

[0057] It should be noted that the stacking method of the force sensing module 130 and the touch module 140 between the cover plate 110 and the display module 150 is not the same as Figure 1 Please refer to Figure 2 . Figure 2 FIG. 2 is a schematic diagram of an electronic device 100A according to another embodiment of the present invention. Figure 2 As shown, the electronic device 100A includes a cover plate 110, adhesive layers 120d, 120e, a display module 150, a touch module 140, and a force sensing module 130. The touch module 140 is disposed between the cover plate 110 and the display module 150, and is configured to detect the two-dimensional position of the touch point on the surface of the cover plate 110 (for example, the X-axis direction and the Y-axis direction). The force sensing module 130 is disposed between the cover plate 110 and the display module 150, and is configured to sense the force parameters caused by the change of the force applied to the surface of the cover plate 110 (that is, the Z-axis direction). Specifically, the touch module 140 is stacked between the cover plate 110 and the force sensing module 130. The force sensing module 130 is stacked between the touch module 140 and the display module 150. That is, the touch module 140 is located on a side of the force sensing module 130 close to the cover plate 110, and the force sensing module 130 is located on a side of the touch module 140 close to the display module 150. The touch module 140 is connected to the cover plate 110. The adhesive layer 120d is adhered between the touch module 140 and the force sensing module 130. The adhesive layer 120e is adhered between the force sensing module 130 and the display module 150.

[0058] In some embodiments, Figure 2 The touch module 140 shown in the figure can be an OGS-SITO (One Glass Solution single-sided ITO) type touch module or a GF (Glass Film) type touch module, but the present invention is not limited thereto. Specifically, the aforementioned OGS-SITO type means that the touch driving electrodes and touch sensing electrodes of the touch module 140 are formed on the lower surface of the cover plate 110, and the touch driving electrodes and the touch sensing electrodes are separated by insulating materials to form a structure similar to a cross-bridge. The aforementioned GF type means that the single-layer thin film sensor of the touch module 140 is formed on the lower surface of the cover plate 110. It can be seen from this that Figure 2 The touch module 140 shown in the figure enables the cover plate 110 to also have the function of a capacitive sensor.

[0059] In some embodiments, at least one of the adhesive layers 120a, 120b, 120c, 120d, and 120e is an 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 as required.

[0060] In order to ensure that the electronic device 100 or 100A still has good light transmittance and display effect when the force sensing module 130 is disposed between the cover 110 and the display module 150 , the present invention improves the structure of the force sensing module 130 as described below.

[0061] Please refer to Figure 3 as well as Figure 4 . Figure 3 FIG. 1 is a schematic diagram illustrating a force sensing module 130 according to an embodiment of the present invention. Figure 4 FIG. 1 is a schematic diagram illustrating a light-transmitting force-sensitive composite layer 131 according to an embodiment of the present invention. Figure 3 and Figure 4 As shown, the force sensing module 130 includes a first transparent electrode 132, a second transparent electrode 133 and a light-transmitting force-sensitive composite layer 131. The light-transmitting force-sensitive composite layer 131 includes a light-transmitting electrode layer 131a and a functional spacer layer 131b. The light-transmitting electrode layer 131a has a first resistivity. The functional spacer layer 131b has a second resistivity greater than the first resistivity. The light-transmitting electrode layer 131a and the functional spacer layer 131b are stacked between the first transparent electrode 132 and the second transparent electrode 133. The light-transmitting force-sensitive composite layer 131 has an optical transmittance greater than 85% and a haze less than 3%.

[0062] In some embodiments, the optical transmittance of the light-transmitting force-sensitive composite layer 131 is about 85.5% to about 91.5%, but the invention is not limited thereto.

[0063] In some embodiments, the haze of the light-transmitting force-sensitive composite layer 131 is about 1.35% to about 2.65%, but the present invention is not limited thereto.

[0064] In some embodiments, the second resistivity is about 3 to about 50 times the first resistivity, but the invention is not limited thereto.

[0065] In order to make the light-transmitting force-sensitive composite layer 131 meet the aforementioned requirements of optical transmittance and haze, in some embodiments, the light-transmitting electrode layer 131a in the light-transmitting force-sensitive composite layer 131 is a silver nanowire (SNW; also known as AgNW) electrode layer. Figure 5A , which is a drawing Figure 4 The partial enlarged view of the light-transmitting force-sensitive composite layer 131 when it is not pressed is shown. Figure 5A As shown, the light-transmitting electrode layer 131a 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, which is formed on the first transparent electrode 132 or the second transparent electrode 133 by coating or other methods, and is heated and dried to volatilize volatile substances, and the non-nanosilver wire substances left on the first transparent electrode 132 or the second transparent electrode 133. 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.

[0066] 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.

[0067] In order to make the light-transmitting force-sensitive composite layer 131 meet the aforementioned requirements of optical transmittance and haze, the functional spacer 131b in the light-transmitting force-sensitive composite layer 131 is a light-transmitting coating formed on the light-transmitting electrode layer 131a. Figure 5A As shown, the functional spacer 131b is a matrix layer doped with low-concentration nanosilver wires. Specifically, the functional spacer 131b includes a matrix and low-concentration nanosilver wires doped therein, so that the second resistivity of the functional spacer 131b is greater than the first resistivity of the light-transmitting electrode layer 131a, and the functional spacer 131b has a greater optical transmittance. In some embodiments, the matrix of the functional spacer 131b is the same as the matrix of the light-transmitting electrode layer 131a, but the present invention is not limited thereto.

[0068] Please refer to Figure 5B , which is a drawing Figure 4 The partial enlarged view of the light-transmitting force-sensitive composite layer 131 when it is pressed is shown. Figure 5A and Figure 5BAs shown, since the light-transmitting electrode layer 131a is made of nano silver wires, when the external pressure channel from the cover plate 110 side is transmitted to the force-sensitive measuring module 130, the light-transmitting electrode layer 131a will be compressed by the force, so that the nano silver wires therein are close to and pass through the functional spacer 131b, and the number of overlapping points increases, thereby improving the overall conductivity of the light-transmitting force-sensitive composite layer 131 (that is, the resistivity decreases). Therefore, the pressure sensing chip (not shown) can calculate the value of the external pressure channel by detecting the change in the resistance value of the light-transmitting force-sensitive composite layer 131 through the electrical communication between the first transparent electrode 132 and the second transparent electrode 133. For example, if the external pressure channel is large, the resistance value of the light-transmitting force-sensitive composite layer 131 has a large change; on the contrary, if the external pressure channel is small, the resistance value of the light-transmitting force-sensitive composite layer 131 has a small change. Therefore, the value of the external pressure channel can be calculated by the change in the resistance value of the light-transmitting force-sensitive composite layer 131.

[0069] In some embodiments, the light-transmitting electrode layer 131a 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 131b is about 40nm to about 1500nm (preferably about 60nm to about 100nm).

[0070] like Figure 4 As shown, in this embodiment, the light-transmitting force-sensitive composite layer 131 includes two light-transmitting electrode layers 131a and two functional spacer layers 131b. The light-transmitting electrode layers 131a and the functional spacer layers 131b are stacked alternately in sequence. However, the stacking method between the light-transmitting electrode layers 131a and the functional spacer layers 131b is not the same as that between the light-transmitting electrode layers 131a and the functional spacer layers 131b. Figure 1 For the limit.

[0071] Please refer to Fig. 6A . Fig. 6A FIG. 1 is a schematic diagram illustrating a light-transmitting force-sensitive composite layer 131A according to another embodiment of the present invention. Fig. 6AAs shown, the light-transmitting force-sensitive composite layer 131A includes a plurality of light-transmitting electrode layers 131a and a plurality of functional spacers 131b, wherein at least one functional spacer 131b is stacked between two light-transmitting electrode layers 131a, and at least one light-transmitting electrode layer 131a is stacked between two functional spacers 131b. Specifically, the light-transmitting force-sensitive composite layer 131A includes six light-transmitting electrode layers 131a and two functional spacers 131b, wherein three light-transmitting electrode layers 131a are located between the two functional spacers 131b, and the other three light-transmitting electrode layers 131a are located outside the two functional spacers 131b. In addition, in this embodiment, the thickness of the two functional spacers 131b is different. For example, the thickness of the functional spacer 131b stacked between the two light-transmitting electrode layers 131a is greater than the thickness of the functional spacer 131b not stacked between the light-transmitting electrode layers 131a (for example, twice).

[0072] Please refer to Figure 6B . Figure 6B FIG. 1 is a schematic diagram illustrating a light-transmitting force-sensitive composite layer 131B according to another embodiment of the present invention. Figure 6B As shown, the light-transmitting force-sensitive composite layer 131B includes a plurality of light-transmitting electrode layers 131a and a plurality of functional spacer layers 131b, wherein the light-transmitting electrode layers 131a and the functional spacer layers 131b are alternately stacked in sequence. Specifically, the light-transmitting force-sensitive composite layer 131b includes eight light-transmitting electrode layers 131a and eight functional spacer layers 131b.

[0073] Please refer to Figure 6C . Figure 6C FIG. 1 is a schematic diagram illustrating a light-transmitting force-sensitive composite layer 131C according to another embodiment of the present invention. Figure 6C As shown, the light-transmitting force-sensitive composite layer 131C includes a plurality of light-transmitting electrode layers 131a and a plurality of functional spacer layers 131b, wherein the light-transmitting electrode layers 131a and the functional spacer layers 131b are alternately stacked in sequence. Figure 6B As shown in the light-transmitting force-sensitive composite layer 131B, in the light-transmitting force-sensitive composite layer 131C of this embodiment, the thickness of the functional partition layer 131b stacked between any two light-transmitting electrode layers 131a is greater than the thickness of the functional partition layer 131b not stacked between any two light-transmitting electrode layers 131a (for example, twice).

[0074] By increasing the number of transparent electrode layers 131a and / or functional isolation layers 131b and changing the stacking order of the transparent electrode layers 131a and the functional isolation layers 131b, the transparent force-sensitive composite layer 131A can have a good force-resistance characteristic curve (i.e., tending to linear change), so that the force hierarchy application can be realized. The total number of layers of the transparent electrode layers 131a and the functional isolation layers 131b is 2 to 20 layers, and the best is 7 layers. Furthermore, the force sensing module 130 can also select a suitable controller according to different force-resistance characteristic curves, thereby increasing the design and manufacturing flexibility of the force sensing module 130.

[0075] In some embodiments, the total number of transparent electrode layers 131 a and functional spacer layers 131 b included in the transparent force-sensitive composite layer 131 is about 3 to about 21 layers, but the present invention is not limited thereto.

[0076] In some other embodiments, if only to enable the force sensing module 130 to achieve its basic function, the light-transmitting force-sensitive composite layer 131 may also only include a light-transmitting electrode layer 131 a and a functional isolation layer 131 b .

[0077] In some embodiments, the value of the L* axis (ie, brightness axis) of the CIELAB color space of the light-transmitting force-sensitive composite layer 131 detected by a colorimeter is about 90 to about 98, but the present invention is not limited thereto.

[0078] In some embodiments, the value of the a* axis (ie, red-green axis) of the CIELAB color space detected by a colorimeter of the light-transmitting force-sensitive composite layer 131 is about -2.0 to about 0, preferably about -0.5 to about 0.5, but the present invention is not limited thereto.

[0079] In some embodiments, the value of the b* axis (ie, the yellow-blue axis) of the CIELAB color space detected by a colorimeter of the light-transmitting force-sensitive composite layer 131 is about -2 to about 6, preferably about -1.5 to about 3.0, but the present invention is not limited thereto.

[0080] In some embodiments, at least one of the first transparent electrode 132 and the second transparent electrode 133 may be an ITO electrode layer or an electrode layer including nano silver wires, but the present invention is not limited thereto.

[0081] Please refer to Figure 7 . Figure 7 FIG. 1 is a flow chart showing a method for manufacturing a force sensing module according to an embodiment of the present invention. Figure 7 As shown, the method for manufacturing a force sensing module includes steps S101 and S102.

[0082] In step S101, a light-transmitting force-sensitive composite layer is formed on the first transparent electrode, wherein the light-transmitting force-sensitive composite layer includes a light-transmitting electrode layer and a functional spacer layer, and a first resistivity of the light-transmitting electrode layer is smaller than a second resistivity of the functional spacer layer.

[0083] In step S102 , a second transparent electrode is formed on the light-transmitting force-sensitive composite layer.

[0084] In some embodiments, step S101 includes steps S101a to S101d.

[0085] In step S101a, a conductive coating is coated on the first transparent electrode.

[0086] In step S101b, the conductive coating is baked to form a light-transmitting electrode layer.

[0087] In step S101c, a functional coating is coated on the first transparent electrode.

[0088] In step S101d, the functional coating is baked to form a functional barrier layer.

[0089] In some embodiments, the coating process in step S101a and / or step S101c includes a spin coating process or a slit die coating process, but the present invention is not limited thereto.

[0090] In some embodiments, the baking process in step S101b and / or step S101d includes, for example, a pre-baking process at a baking temperature of about 70° C. to about 100° C. for about 20 minutes to about 40 minutes and / or a UV baking process at an energy of about 3000 mJ, but the present invention is not limited thereto.

[0091] In some embodiments, step S101a is performed before step S101c. That is, after step S101 is completely performed, the light-transmitting electrode layer is located between the first transparent electrode and the functional spacer layer, and the functional spacer layer is located between the light-transmitting electrode layer and the second transparent electrode.

[0092] In some embodiments, step S101a is performed later than step S101c. That is, after step S101 is completely performed, the functional spacer is located between the first transparent electrode and the light-transmitting electrode layer, and the light-transmitting electrode layer is located between the functional spacer and the second transparent electrode.

[0093] In some embodiments, step S101 further includes step S101e.

[0094] In step S101e, steps S101a to S101d are repeatedly executed at least once.

[0095] From the above detailed description of the specific embodiments of the present invention, it can be clearly seen that in the force sensing module and the electronic device of the present invention, the light-transmitting force-sensitive composite layer formed by the light-transmitting electrode layer with low resistivity and the functional interlayer with high resistivity can have good optical properties (i.e., high optical transmittance and low haze) and a good force-resistance characteristic curve (i.e., tending to linear change). Therefore, the force sensing module of the present invention can be arranged between the cover plate and the display module of the electronic device, and has greater flexibility in integrated design. In addition, since the force sensing module and the touch module can be arranged on the same side of the display module facing the cover plate, the force transmission distortion effect faced by the known technology can be effectively reduced.

[0096] 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. A force sensitive measurement module, characterized in that: Include: a first transparent electrode; a second transparent electrode; and A light-transmitting force-sensitive composite layer, comprising: At least one light-transmitting 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 light-transmitting electrode layer and the at least one functional spacer are stacked between the first transparent electrode and the second transparent electrode, The light-transmitting force-sensitive composite layer has an optical transmittance greater than 85% and a haze less than 3%, and a value of an L* axis of the light-transmitting force-sensitive composite layer in a CIELAB color space is 90 to 98.

2. The force sensing module according to claim 1, characterized in that: The at least one light-transmitting electrode layer is a nano silver wire electrode layer.

3. The force sensing module according to claim 1, characterized in that: The at least one functional spacer is a matrix layer doped with a low concentration of nano silver wires.

4. The force sensing module according to claim 3, characterized in that: The matrix layer is compressible.

5. The force sensing module according to claim 1, characterized in that: The number of the at least one light-transmitting electrode layer is two, and the at least one functional spacer layer is stacked between the two light-transmitting electrode layers.

6. The force sensing module according to claim 1, characterized in that: The number of the at least one functional spacer is two, and the at least one light-transmitting electrode layer is stacked between the two functional spacers.

7. The force sensing module according to claim 1, characterized in that: The a* axis of the light-transmitting force-sensitive composite layer in the CIELAB color space has a value ranging from -2.0 to 0.

8. The force sensing module according to claim 1, characterized in that: The b* axis of the light-transmitting force-sensitive composite layer has a value of -2 to 6 in the CIELAB color space.

9. An electronic device, characterized in that: Include: a cover plate; a display module; a touch module, disposed between the cover plate and the display module; and A force sensing module as claimed in any one of claims 1 to 8, disposed between the cover plate and the display module.

10. The electronic device according to claim 9, characterized in that: The touch control module is stacked between the cover plate and the force sensing module.

11. The electronic device according to claim 10, characterized in that: The touch control module is an OGS-SITO touch control module or a GF touch control module.

12. The electronic device according to claim 9, characterized in that: The force sensing module is stacked between the cover plate and the touch control module.

13. The electronic device according to claim 12, characterized in that: The touch control module is a GF2 touch control module or a GFF touch control module.

14. The electronic device according to claim 9, characterized in that: The touch module includes nano silver wire electrodes.

15. A method for manufacturing a force sensitive measuring module, characterized in that: Include: (a) forming a light-transmitting force-sensitive composite layer on a first transparent electrode, wherein the light-transmitting force-sensitive composite layer comprises at least one light-transmitting electrode layer and at least one functional spacer layer, and a first resistivity of the at least one light-transmitting electrode layer is less than a second resistivity of the at least one functional spacer layer; and (b) forming a second transparent electrode on the light-transmitting force-sensitive composite layer, Wherein step (a) comprises: (a1) coating at least one conductive coating on the first transparent electrode; (a2) baking the at least one conductive coating to form the at least one light-transmitting electrode layer; (a3) coating at least one functional coating on the first transparent electrode; and (a4) baking the at least one functional coating to form the at least one functional barrier layer.

16. The method for manufacturing a force sensing module according to claim 15, characterized in that: Wherein step (a1) is performed before step (a3).

17. The method for manufacturing a force sensing module according to claim 15, characterized in that: Wherein step (a1) is performed later than step (a3).

18. The method for manufacturing a force sensing module according to claim 15, characterized in that: Further including: (a5) Repeat steps (a1) to (a4) at least once.

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