Touch module

Abstract

The utility model belongs to touch display module field, concretely relates to a kind of touch module, at least include: base material: including first surface and second surface;Touch function layer: located the first surface of the base material, including first touch electrode, insulating layer, second touch electrode;The first touch electrode is located base material first surface, including first main circuit and first lead, the first lead is located first main circuit edge, with first main circuit is located same layer, with first main circuit electric connection;The insulating layer is located first touch electrode surface, insulating layer edge is located first lead inside, not completely cover first lead;Second touch electrode includes second main circuit and second lead, the second main circuit is located insulating layer surface, second lead is electrically connected with second main circuit, and second touch electrode is not electrically connected with first touch electrode.The utility model process difficulty is low, production efficiency is high, can reach touch light and thin, bendable and practicality strong requirement.

Description

Technical Field

[0001] This utility model belongs to the field of touch display modules, and specifically relates to a touch module. Background Technology

[0002] Touch modules, as core components of human-computer interaction, are widely used in devices such as smartphones, tablets, and automotive displays. Currently, their technologies include external (e.g., GFF, OGS) and embedded (e.g., In-Cell, On-Cell) structures. For example: GFF (Glass-Film-Film): achieves touch control through two layers of ITO film, resulting in low cost but significant thickness and poor light transmittance; On-Cell: integrates the touch sensor onto the encapsulation layer of the display panel, but the process is complex and yields low output; OGS (One Glass Solution): fabricates the touch electrodes on the inside of the cover glass, reducing thickness but resulting in poor impact resistance and high repair costs.

[0003] Although OGS is scratch-resistant and environmentally stable, it is rigid and cannot be bent. OFS (One Film Solution) technology, on the other hand, uses a flexible film to prepare the touch layer, which has the advantages of being flexible and ultra-thin.

[0004] Chinese patent CN 119902652 A discloses a multi-level nano-metal network touch module and its preparation method. This patent provides display clarity, but still has some drawbacks. For example, there are many points on the upper layer of the insulating layer that require multi-level nano-metal network jumpers to connect. Poor jumper connection at a certain point can easily lead to the failure of the entire touch panel. Utility Model Content

[0005] This utility model provides a touch module that can adopt a zero-bonding cover plate, frame-bonded cover plate, or cover plate-free solution. It has the advantages of low process difficulty and high production efficiency, while achieving the requirements of thin and light touch, bendability, and strong practicality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A touch module, comprising at least: Substrate: includes a first surface and a second surface; Touch function layer: Located on the first surface of the substrate, including a first touch electrode, an insulating layer, and a second touch electrode; the first touch electrode is located on the first surface of the substrate and includes a first main circuit and a first lead, the first lead being located at the edge of the first main circuit, on the same layer as the first main circuit, and electrically connected to the first main circuit; the insulating layer is located on the surface of the first touch electrode, the edge of the insulating layer being located inside the first lead, and not completely covering the first lead; the second touch electrode includes a second main circuit and a second lead, the second main circuit being located on the surface of the insulating layer, the second lead being electrically connected to the second main circuit, and the second touch electrode not being electrically connected to the first touch electrode.

[0007] Preferably, the first lead includes a first lead first portion, a first lead second portion, and a first lead third portion. The first lead first portion is located on the same layer as the first main circuit and is electrically connected to the first main circuit. The first lead second portion is located on the side of the surface of the first lead first portion away from the substrate, is electrically connected to the first lead first portion, and completely or partially covers the first lead first portion. The first lead third portion is located on the surface of the insulating layer and is electrically connected to the first lead second portion.

[0008] Preferably, the second lead includes a second part and a third part, the second part of the second lead is located on the same layer as the first main line and extends beyond the edge of the insulation layer, and the third part of the second lead is located above the insulation layer and is electrically connected to the second part of the second lead and the second main line.

[0009] Preferably, the second lead includes a first part, a second part, and a third part, wherein the first part is located on the same layer as the first main line, the second part is located on the upper layer of the first part and partially or completely covers the first part, the second part is electrically connected to the first part, and the third part is completely located on the upper side of the insulation layer and is electrically connected to the second main line and the second part.

[0010] Preferably, the second lead is located entirely on the surface of the insulating layer.

[0011] Preferably, the touch module includes a first auxiliary circuit and a second auxiliary circuit. The first auxiliary circuit is located on the same layer as the first touch electrode and is electrically insulated from the first touch electrode and the second touch electrode. The second auxiliary circuit is located on the same layer as the second touch electrode and is electrically insulated from the first touch electrode and the second touch electrode.

[0012] Preferably, the first main line includes a first main channel and a first channel section; the second main line includes a second main channel and a second channel section; the first channel section and the second channel section are stacked longitudinally and separated by an insulating layer; The linewidth of the first channel is smaller than the linewidth of the first main channel; the linewidth of the second channel is smaller than the linewidth of the second main channel. Or the line spacing of the first channel is greater than the line spacing of the first main channel; the line spacing of the second channel is greater than the line spacing of the second main channel; Or the linear density of the first channel is less than the linear density of the first main channel; the linear density of the second channel is less than the linear density of the second main channel; Or any combination thereof.

[0013] Preferably, the transmittance of the first channel segment is higher than that of the first main channel, the transmittance of the second channel segment is higher than that of the second main channel, and the difference between the transmittance of the first channel segment and the second channel segment at the overlap and the transmittance of the first main channel and / or the second main channel is less than 20%; the difference between the transmittance of the first main channel and the second main channel is less than 20%; preferably, the transmittance of the first channel segment and the second channel segment at the overlap is equal to the transmittance of the first main channel and / or the second main channel, and the transmittance of the first main channel is equal to the transmittance of the second main channel.

[0014] Preferably, the touch module includes a functional layer located on the second surface of the substrate. The functionalization method includes one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The substrate is a hardened substrate, and the hardening layer of the hardened substrate is located on the second surface of the substrate, with a hardness greater than 1H.

[0015] Preferably, the first touch electrode includes a first touch electrode edge line, which is located on the same layer as the first main circuit, or is completely located on the surface of the insulating layer, or is partially located on the same layer as the first main circuit and partially located on the surface of the insulating layer; the second touch electrode includes a second touch electrode edge line, which is located on the same layer as the first main circuit, or is completely located on the surface of the insulating layer, or is partially located on the same layer as the first main circuit and partially located on the surface of the insulating layer.

[0016] The touch module is a flexible touch module that adopts a coverless design, reducing the use of one cover layer and effectively reducing the thickness of the touch display module. The touch module may also include a cover and an adhesive for bonding the cover, wherein the cover includes a rigid cover and a flexible cover.

[0017] The linewidth, line spacing, and line density of the first channel (second channel) and the first main channel (second main channel) are designed such that the light absorption rate of the first channel (second channel) is less than that of the first main channel (second main channel), thereby achieving an effect where the light transmittance at the overlap of the first and second channels is close to the light transmittance of the first main channel (and / or the second main channel), with no visual difference in optics.

[0018] The pattern of the first channel (second channel) is the same as that of the first main channel (second main channel), with the same line width, line spacing, and line density.

[0019] All lines located on the same layer have the same line width, line spacing, line density, and light transmittance. The resulting touch module has an optically consistent appearance with no visual differences.

[0020] The conductive layers of the first and second touch electrodes are made of ITO, metal nanowires, metal meshes, multi-level nano-metal networks, graphene, or combinations thereof. Preferably, the conductive layers of the first and second touch electrodes are made of metal nanowires or multi-level nano-metal networks.

[0021] The touch module includes a functional layer located on the second surface of the substrate. The functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The substrate is a hardened substrate, and the hardening layer is located on the second surface of the substrate, with a hardness greater than 1H.

[0022] The methods for preparing the first and second touch electrodes include: electrode pattern etching methods such as laser etching, photolithography, and / or wet etching; the methods for preparing the insulating layer include various methods such as screen printing, inkjet printing, slot coating, micro-gravure coating, and roller coating; the methods for preparing the insulating layer pattern include photolithography and / or wet etching; the methods for preparing the edges of the first and second touch electrodes include: one-time etching of a low-resistivity film, etching the edges of the first and second touch electrodes simultaneously with etching the first and second main circuits; screen printing silver paste, etching the edges by additional screen printing silver paste; inkjet printing the edges, forming the edges by inkjet printing conductive ink; or copper plating the edges.

[0023] The flexible substrate includes one of polyester (PET), cyclic olefin polymer (COP), colorless polyimide (CPI), polypropylene (PP), polyethylene (PE), and triacetate cellulose (TAC). Optionally, the substrate includes a functionalized layer, the functionalization of which includes, but is not limited to, one or more of antireflective treatment, anti-reflective treatment, hardening treatment, and anti-glare treatment. The thickness of the substrate is 10-300 μm.

[0024] The flexible cover plate includes one of polyester (PET), cyclic olefin polymer (COP), colorless polyimide (CPI), polypropylene (PP), polyethylene (PE), and triacetate cellulose (TAC). Optionally, the cover plate includes a post-processed substrate. The post-processing method includes, but is not limited to, one or more of anti-reflective treatment, anti-reflective treatment, hardening treatment, and anti-glare treatment. The thickness of the substrate is 10-300 μm.

[0025] Compared with the prior art, the technical advantages of this utility model are: 1. The insulation layer has a large coverage area, eliminating the dot-like appearance caused by visible jumper bridging; 2. During the manufacturing process, only a portion of the lead wires need to be bridged at the edge, making the process simpler and avoiding the defects caused by the breakage of the bridge in the visible area due to traditional jumper wire bridging; 3. The design incorporates multiple lead wire configurations, making it compatible with various touchscreen manufacturing processes; 4. Set up a first auxiliary line and a second auxiliary line to perform optical compensation in areas without channel lines, so as to better avoid the difference in optical appearance between the line area and the non-line area and form optical consistency. Attached Figure Description

[0026] In the accompanying drawings, the same reference numerals represent the same or similar components. For ease of understanding, some components in the drawings are infinitely enlarged. The specific shapes in the drawings are unrelated to the actual shapes of the components and are only for identification and explanation. Obviously, those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1a This is a schematic diagram of the first touch electrode of this utility model; Figure 1b This is a top view of the stacked structure of the touch function layer of this utility model. The first lead is located at the edge of the first main circuit, on the same layer as the first main circuit, and electrically connected to the first main circuit. The first lead extends beyond the edge of the insulating layer. The insulating layer is located on the surface of the first touch electrode, with its edge located inside the first lead and not completely covering the first lead. The second main circuit is located on the surface of the insulating layer, with the second lead extending beyond the edge of the insulating layer and electrically connected to the second main circuit. The second touch electrode is not electrically connected to the first touch electrode.

[0028] Figure 2a This is a schematic diagram showing that the first lead and the first main circuit of this utility model are located on the same layer. Figure 2b for Figure 2a Corresponding edge line setting diagram; Figure 2c This is a schematic diagram of the first lead of the present invention, which includes a first lead first part, a first lead second part, and a first lead third part, wherein the first lead second part can completely cover the first lead first part; Figure 2d , 2e 2f and 2f are respectively Figure 2c A diagram showing the corresponding edge line settings.

[0029] Figure 3a This is a schematic diagram of the second lead of the present invention, including a first part, a second part, and a third part. Figure 3b , 3c, 3d are respectively Figure 3a Corresponding edge line setting diagram; Figure 3e This is a schematic diagram showing the second lead of this invention located on the surface of the insulating layer. Figure 3f for Figure 3e A diagram showing the corresponding edge line settings.

[0030] Figure 4a A schematic diagram of the first touch electrode and the first auxiliary circuit located on the same layer; Figure 4b This is a top view of the stacked structure of the touch function layer of this utility model, which includes a first auxiliary circuit and a second auxiliary circuit. Figure 5a , 5b Figures 5 and 5c are schematic diagrams of the first main channel (second main channel) and the first channel section (second channel section) of this utility model; wherein... Figure 5a As shown, the linear density of the first main channel (second main channel) is greater than the linear density of the first channel section (second channel section), where... Figure 5b As shown, the width of the first main channel (second main channel) is smaller than the width of the first channel section (second channel section), where... Figure 5c As shown, the spacing between the first main channel (second main channel) and the second main channel is greater than the spacing between the first channel section (second channel section). Figure 6 This is a schematic diagram of the pattern design of the first main channel (second main channel) and the first section channel (second section channel) of this utility model. The pattern of the first main channel (second main channel) is the same as that of the first section channel (second section channel), with the same line width, the same line spacing, and the same line density.

[0031] Figure 7 This is a schematic diagram of the touch module structure of this utility model.

[0032] Figure label: 100 is a stacked structure of the touch function layer; 110 is the first touch electrode, 111 is the first main channel, 112 is the first segment channel, 111 and 112 form the first main circuit, 113 is the first lead, 1131 is the first part of the first lead, 1132 is the second part of the first lead, 1133 is the third part of the first lead, 114 is the edge line of the first touch electrode, and 115 is the first auxiliary circuit; 120 is the second touch electrode, 121 is the second main channel, 122 is the second segment channel, 121 and 122 form the second main circuit, 123 is the second lead, 1231 is the first part of the second lead, 1232 is the second part of the second lead, 1233 is the third part of the second lead, 124 is the edge line of the second touch electrode, and 125 is the second auxiliary circuit; 130 is an insulating layer; 200 is a substrate; and 300 is a functionalized layer. Detailed Implementation

[0033] The following are examples of embodiments of this utility model. Those skilled in the art should understand that the listed embodiments are only some embodiments of this utility model and should not be regarded as specific limitations on this patent.

[0034] Example 1 A touch module, characterized in that it comprises at least: Substrate: A flexible substrate is used, including a first surface and a second surface; Touch function layer: Located on the first surface of the substrate, including a first touch electrode, an insulating layer, and a second touch electrode; the first touch electrode is located on the first surface of the substrate and includes a first main circuit and a first lead, the first lead being located at the edge of the first main circuit, on the same layer as the first main circuit, and electrically connected to the first main circuit; the insulating layer is located on the surface of the first touch electrode, the edge of the insulating layer being located inside the first lead, and not completely covering the first lead; the second touch electrode includes a second main circuit and a second lead, the second main circuit being located on the surface of the insulating layer, the second lead extending beyond the edge of the insulating layer and electrically connected to the second main circuit, and the second touch electrode is not electrically connected to the first touch electrode.

[0035] like Figure 1a The diagram shown is of the first touch electrode 110 of this utility model, which includes a first main channel 111, a first segment channel 112, and a first lead 113, wherein the first main channel 111 and the first segment channel 112 constitute the first main circuit. Figure 1b This is a top view of the stacked structure of the touch function layer of this utility model, including a first main circuit (covered by an insulating layer, not shown), a first lead 113, an insulating layer 130, and a second touch electrode 120. The second touch electrode 120 includes a second main circuit and a second lead 123. The second main circuit includes a second main channel 121 and a second junction channel 122. The second lead 123 includes a second part 1232 and a third part 1233. The first lead 113 is located at the edge of the first main circuit, is on the same layer as the first main circuit, and is electrically connected to the first main circuit. The first lead extends beyond the edge of the insulating layer 130. The insulating layer 130 is located on the surface of the first touch electrode, and its edge is located inside the first lead 113, not completely covering the first lead 113. The second main circuit is located on the surface of the insulating layer 130, and the second lead 123 extends beyond the edge of the insulating layer and is electrically connected to the second main circuit. The second touch electrode is not electrically connected to the first touch electrode.

[0036] The first main line includes a first main channel and a first channel section; the second main line includes a second main channel and a second channel section; the first channel section and the second channel section are stacked longitudinally and separated by an insulating layer; The linewidth of the first channel is smaller than the linewidth of the first main channel; the linewidth of the second channel is smaller than the linewidth of the second main channel. Or the line spacing of the first channel is greater than the line spacing of the first main channel; the line spacing of the second channel is greater than the line spacing of the second main channel; Or the linear density of the first channel is less than the linear density of the first main channel; the linear density of the second channel is less than the linear density of the second main channel; Or any combination thereof.

[0037] The transmittance of the first channel segment is higher than that of the first main channel, and the transmittance of the second channel segment is higher than that of the second main channel. The difference between the transmittance of the first and second channel segments at the overlap and the transmittance of the first and / or second main channels is less than 10%. The difference between the transmittance of the first main channel and the second main channel is less than 10%. Preferably, the transmittance of the first and second channel segments at the overlap is equal to the transmittance of the first and / or second main channels, and the transmittance of the first main channel is equal to that of the second main channel.

[0038] like Figure 5a , 5b Figure 5c shows a schematic diagram of the design of the first main channel (second main channel) and the first channel section (second channel section) of this utility model; wherein... Figure 5a As shown, the linear density of the first main channel 111 (second main channel 121) is greater than the linear density of the first channel 112 (second channel 122). Figure 5b As shown, the line width of the first main channel 111 (second main channel 121) is smaller than the line width of the first channel 112 (second channel 122). Figure 5c As shown, the line spacing of the first main channel 111 (second main channel 121) is smaller than the line spacing of the first channel 112 (second channel 122); Figure 6 This is a schematic diagram of the pattern design of the first main channel (second main channel) and the first section channel (second section channel) of this utility model. The pattern of the first main channel 111 (second main channel 121) is the same as the pattern of the first section channel 112 (second section channel 122), with the same line width, the same line spacing, and the same line density.

[0039] The conductive layer material of the first touch electrode and the second touch electrode is ITO, metal nanowires, metal mesh, multi-level nano-metal network, graphene, or a combination thereof. Preferably, the conductive layer of the first touch electrode and the second touch electrode is made of metal nanowires or multi-level nano-metal network.

[0040] like Figure 7As shown, the touch module includes a touch function layer 100 and a functional layer 300. The functional layer 300 is located on the second surface of the substrate 200. The functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The substrate is a hardened substrate, and the hardening layer of the hardened substrate is located on the second surface of the substrate, with a hardness greater than 1H.

[0041] Example 2 Figure 2a This is a schematic diagram showing that the first lead and the first main circuit of this utility model are located on the same layer. Figure 2b for Figure 2a A schematic diagram of the corresponding first touch electrode edge line setting. The first lead 113 is located on the same layer as the first main circuit, and its corresponding first touch electrode edge line 114 overlaps with the first lead 113 and is located on the same layer as the first main circuit.

[0042] Figure 2c This is a schematic diagram of the first lead of the present invention, including a first lead portion 1131, a second lead portion 1132, and a third lead portion 1133. The second lead portion 1132 may completely cover the first lead portion 1131 or partially cover the first lead portion 1131. The first lead portion 1131 is located on the same layer as the first main circuit and is electrically connected to the first main circuit. The second lead portion 1132 is located on the side of the surface of the first lead portion 1131 away from the substrate, is electrically connected to the first lead portion 1131, and completely (or partially) covers the first lead portion 1131. The third lead portion 1133 is located on the surface of the insulating layer 130 and is electrically connected to the second lead portion 1132. Figure 2d , 2e 2f and 2f are respectively Figure 2c A diagram showing the corresponding edge line settings. (Example) Figure 2d As shown, the edge line 114 of the first touch electrode overlaps with the first part 1131 of the first lead, and is located on the same layer as the first main circuit; as Figure 2e As shown, the edge line 114 of the first touch electrode overlaps with the second part 1132 of the first lead, and is located on the same layer as the first main circuit; as Figure 2f As shown, the edge line 114 of the first touch electrode overlaps with the third part 1133 of the first lead, part of which is located on the same layer as the first main circuit and part of which is located on the surface of the insulating layer.

[0043] Example 3 Figure 3aThis is a schematic diagram of the second lead of the present invention, including a first part 1231, a second part 1232, and a third part 1233. The second part 1232 can completely cover the first part 1231 or partially cover the first part 1231. Figure 3b , 3c , 3d are respectively Figure 3a The corresponding edge line setting diagram; the first part 1231 of the second lead is located on the same layer as the first main line and is electrically connected to the second main line; the second part 1232 of the second lead is located on the side of the surface of the first part 1231 away from the substrate, is electrically connected to the first part 1231 and completely (or partially) covers the first part 1231; the third part 1233 of the second lead is located on the surface of the insulating layer 130 and is electrically connected to the second part 1232. For example... Figure 3b As shown, the edge line 124 of the second touch electrode overlaps with the first part 1231 of the second lead, and is located on the same layer as the first main circuit; as Figure 3c As shown, the edge line 124 of the second touch electrode overlaps with the second part 1232 of the second lead, and is located on the same layer as the first main circuit; as Figure 3d As shown, the edge line 124 of the second touch electrode overlaps with the third part 1233 of the second lead, part of which is located on the same layer as the first main line and part of which is located on the surface of the insulating layer.

[0044] Figure 3e This is a schematic diagram showing the second lead 123 located on the surface of the insulating layer 130. Figure 3f for Figure 3e The corresponding edge line setting diagram shows that the edge line 124 of the second touch electrode overlaps with the second lead 123, part of which is located on the surface of the insulating layer and part of which is located on the same layer as the first touch electrode.

[0045] Example 4 A touch module, characterized in that it comprises at least: Substrate: The substrate may be flexible or rigid, including a first surface and a second surface; Touch function layer: Located on the first surface of the substrate, including a first touch electrode, an insulating layer, and a second touch electrode; the first touch electrode is located on the first surface of the substrate and includes a first main circuit and a first lead, the first lead being located at the edge of the first main circuit, on the same layer as the first main circuit, and electrically connected to the first main circuit; the insulating layer is located on the surface of the first touch electrode, the edge of the insulating layer being located inside the first lead, and not completely covering the first lead; the second touch electrode includes a second main circuit and a second lead, the second main circuit being located on the surface of the insulating layer, the second lead extending beyond the edge of the insulating layer and electrically connected to the second main circuit, and the second touch electrode is not electrically connected to the first touch electrode.

[0046] The touch module includes a first auxiliary circuit and a second auxiliary circuit. The first auxiliary circuit is located on the same layer as the first main circuit and is electrically insulated from the first touch electrode and the second touch electrode. The second auxiliary circuit is located on the same layer as the second main circuit and is electrically insulated from the first touch electrode and the second touch electrode.

[0047] Figure 4a A schematic diagram of the first touch electrode and the first auxiliary circuit located on the same layer. The first touch electrode includes a first main circuit, a first auxiliary circuit 115 and a first lead 113. The first main circuit includes a first main channel 111 and a first segment channel 112. The first auxiliary circuit is located on the same layer as the first main circuit and is electrically insulated from the first touch electrode. Figure 4b This is a top view of the stacked structure of the touch function layer of this utility model, which includes a first auxiliary circuit (cover not shown) and a second auxiliary circuit. The second auxiliary circuit 125 is located on the same layer as the second main circuit and is electrically insulated from the first touch electrode and the second touch electrode. Example 5 A method for manufacturing the touch module, comprising: 1) The first touch electrode and the first part of the second lead are prepared by laser etching, photolithography and / or wet etching on the conductive layer of the substrate surface; 2) An insulating layer is prepared on the surface of the first touch electrode using various methods such as screen printing, inkjet printing, slot coating, micro-gravure coating, and roller coating; 3) Fabricate the insulating layer pattern. The fabrication of the insulating layer pattern includes photolithography and / or wet etching, etc., to ensure that the first lead and the second lead extend beyond the edge of the insulating layer. 4) Conductive and protective layers are prepared on the surface of the insulating layer using various methods such as screen printing, inkjet printing, slot coating, gravure coating, and roller coating. 5) The second main circuit and the second lead, the second part and the third part are prepared by photolithography and / or wet etching, ensuring that the second part of the second lead partially covers the first part of the second lead; 6) Fabricating the edge lines of the touch module, including: one-time etching of a low-resistivity film material, etching the edge lines of the first touch electrode and the second main circuit simultaneously; screen printing silver paste, etching the edge lines by additional screen printing silver paste; inkjet printing the edge lines, forming the edge lines by inkjet printing conductive ink; or copper plating the edge lines. Ensure that the edge lines of the first touch electrode overlap with the first lead and are completely located on the same layer as the first main circuit; ensure that the edge lines of the second touch electrode overlap with the first portion of the second lead and are completely located on the same layer as the first main circuit.

[0048] Example 6 A method for manufacturing the touch module, comprising: 1) The first touch electrode and the first auxiliary circuit are prepared by laser etching, photolithography and / or wet etching on the conductive layer of the substrate surface; 2) An insulating layer is prepared on the surface of the first touch electrode using various methods such as screen printing, inkjet printing, slot coating, micro-gravure coating, and roller coating; 3) Fabricate the insulating layer pattern. The fabrication of the insulating layer pattern includes photolithography and / or wet etching, etc., to ensure that the first lead extends beyond the edge of the insulating layer. 4) Conductive and protective layers are prepared on the surface of the insulating layer using various methods such as screen printing, inkjet printing, slot coating, gravure coating, and roller coating. 5) The second main circuit, the second auxiliary circuit, the second part of the second lead, the third part of the second lead, the second part of the first lead, and the third part of the first lead are prepared by photolithography and / or wet etching, ensuring that the second part of the first lead completely covers the first part of the first lead; 6) Fabricating the edge lines of the touch module, including: one-time etching of a low-resistivity film material, etching the edge lines of the first touch electrode and the second main circuit simultaneously; screen printing silver paste, etching the edge lines by additional screen printing silver paste; inkjet printing the edge lines, forming the edge lines by inkjet printing conductive ink; or copper plating the edge lines. Ensure that the edge line of the first touch electrode overlaps with the second part of the first lead or the third part of the first lead; ensure that the edge line of the second touch electrode overlaps with the second part of the second touch electrode or the third part of the second touch electrode.

[0049] This method also includes film thinning treatment before edge fabrication, including plasma treatment, corona treatment, ultraviolet treatment, infrared treatment, etc.

[0050] Example 7 A method for manufacturing the touch module includes: 1) The first touch electrode and the first auxiliary circuit are prepared by laser etching, photolithography and / or wet etching on the conductive layer of the substrate surface; 2) An insulating layer is prepared on the surface of the first touch electrode using various methods such as screen printing, inkjet printing, slot coating, micro-gravure coating, and roller coating; 3) Fabricate the insulating layer pattern. The fabrication of the insulating layer pattern includes photolithography and / or wet etching, etc., to ensure that the first part of the first lead extends beyond the edge of the insulating layer. 4) The second main circuit, the second auxiliary circuit, and the second lead are prepared on the surface of the insulating layer by various methods such as screen printing, inkjet printing, and roller coating, ensuring that the second lead is completely located on the surface of the insulating layer; 6) Fabrication of the touch module edge lines, including: one-time etching of low-resistivity film material, etching the edge lines of the first touch electrode and the second main circuit simultaneously; screen printing silver paste, etching the edge lines by additional screen printing silver paste; inkjet printing the edge lines, forming the edge lines by inkjet printing conductive ink; or copper plating the edge lines. Ensure that the edge lines of the first touch electrode overlap with the first lead; ensure that the edge lines of the second touch electrode overlap with the second lead and are completely located on the surface of the insulating layer.

[0051] This method also includes film thinning treatment before edge fabrication, including plasma treatment, corona treatment, ultraviolet treatment, infrared treatment, etc.

[0052] This utility model only lists some combinations of the first lead and the second lead, as well as some combinations with the edge lines of the first touch electrode and the edge lines of the second touch electrode. Other combinations are within the protection scope of this utility model.

[0053] For any content not described in detail in this utility model, conventional technical knowledge in the field can be used.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A touch module, characterized in that, At least including: Substrate: includes a first surface and a second surface; Touch function layer: Located on the first surface of the substrate, including a first touch electrode, an insulating layer, and a second touch electrode; the first touch electrode is located on the first surface of the substrate and includes a first main circuit and a first lead, the first lead being located at the edge of the first main circuit, on the same layer as the first main circuit, and electrically connected to the first main circuit; the insulating layer is located on the surface of the first touch electrode, the edge of the insulating layer being located inside the first lead, and not completely covering the first lead; the second touch electrode includes a second main circuit and a second lead, the second main circuit being located on the surface of the insulating layer, the second lead being electrically connected to the second main circuit, and the second touch electrode not being electrically connected to the first touch electrode.

2. The touch module according to claim 1, characterized in that, The first lead includes a first lead first part, a first lead second part, and a first lead third part. The first lead first part is located on the same layer as the first main line and is electrically connected to the first main line. The first lead second part is located on the side of the surface of the first lead first part away from the substrate, is electrically connected to the first lead first part, and completely or partially covers the first lead first part. The first lead third part is located on the surface of the insulating layer and is electrically connected to the first lead second part.

3. The touch module according to claim 1, characterized in that, The second lead includes a second part and a third part. The second part is located on the same layer as the first main line and extends beyond the edge of the insulation layer. The third part is located above the insulation layer and is electrically connected to the second part and the second main line.

4. The touch module according to claim 1, characterized in that, The second lead includes a first part, a second part, and a third part. The first part is located on the same layer as the first main line, the second part is located on the upper layer of the first part and partially or completely covers the first part, and the second part is electrically connected to the first part. The third part is located entirely on the upper side of the insulation layer and is electrically connected to the second main line and the second part.

5. The touch module according to claim 1, characterized in that, The second lead is completely located on the surface of the insulating layer.

6. A touch module according to claim 1, characterized in that, The touch module includes a first auxiliary circuit and a second auxiliary circuit. The first auxiliary circuit is located on the same layer as the first touch electrode and is electrically insulated from the first touch electrode and the second touch electrode. The second auxiliary circuit is located on the same layer as the second touch electrode and is electrically insulated from the first touch electrode and the second touch electrode.

7. A touch module according to claim 1, characterized in that, The first main line includes a first main channel and a first channel section; the second main line includes a second main channel and a second channel section; the first channel section and the second channel section are stacked longitudinally and separated by an insulating layer; The linewidth of the first channel is smaller than the linewidth of the first main channel; the linewidth of the second channel is smaller than the linewidth of the second main channel. Or the line spacing of the first channel is greater than the line spacing of the first main channel; the line spacing of the second channel is greater than the line spacing of the second main channel; Alternatively, the linear density of the first channel section is less than the linear density of the first main channel; the linear density of the second channel section is less than the linear density of the second main channel.

8. A touch module according to claim 7, characterized in that, The transmittance of the first channel is higher than that of the first main channel, the transmittance of the second channel is higher than that of the second main channel, the transmittance of the first channel and the second channel at the stacked point is less than 20% of the transmittance of the first main channel and / or the second main channel, and the transmittance of the first main channel and / or the second main channel is less than 20%.

9. A touch module according to claim 1, characterized in that, The touch module includes a functional layer located on the second surface of the substrate. The functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The substrate is a hardened substrate, and the hardening layer of the hardened substrate is located on the second surface of the substrate, with a hardness greater than 1H.

10. A touch module according to any one of claims 1-9, characterized in that, The first touch electrode includes a first touch electrode edge line, which is located on the same layer as the first main circuit, or is completely located on the surface of the insulating layer, or is partially located on the same layer as the first main circuit and partially located on the surface of the insulating layer; the second touch electrode includes a second touch electrode edge line, which is located on the same layer as the first main circuit, or is completely located on the surface of the insulating layer, or is partially located on the same layer as the first main circuit and partially located on the surface of the insulating layer.

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