Touch module

Abstract

The utility model belongs to touch display module field, concretely relates to a kind of touch module, at least includes: base material: including first surface and second surface;Touch function layer: located the first surface of the base material, including first touch electrode, first auxiliary circuit, insulating layer, second touch electrode and second auxiliary circuit;The first touch electrode, first auxiliary circuit, second touch electrode, second auxiliary circuit between each other electrically insulated;The first touch electrode lead wire exceeds insulating layer outer edge, and with first touch electrode side line contact;Second touch electrode lead wire is located with first main circuit same layer.The utility model has low process difficulty, high production efficiency, and 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, a first auxiliary circuit, an insulating layer, a second touch electrode and a second auxiliary circuit; The first touch electrode, the first auxiliary circuit, the second touch electrode, and the second auxiliary circuit are electrically insulated from each other; The first touch electrode lead extends beyond the outer edge of the insulating layer and contacts the edge of the first touch electrode; the second touch electrode lead is located on the same layer as the first main circuit.

[0007] Preferably, the first touch electrode includes a first main circuit, a first section circuit, and a first lead, with the first lead extending beyond the edge of the insulating region of the insulating layer; the insulating layer includes an insulating region and a hollowed-out region, with the hollowed-out region located inside the insulating region and the insulating region completely covering the first main circuit and the first section circuit; the hollowed-out region is located above the second main circuit, exposing all or part of the second main circuit to facilitate contact electrical connection with the second section circuit; The second touch electrode includes a second main circuit, a second section circuit, and a second lead. The second main circuit, the first auxiliary circuit, and the first touch electrode are located on the same layer of the first surface of the substrate and are spaced apart. The second section circuit is located directly above the first section circuit on the surface of the insulating layer, crosses the insulating area of ​​the insulating layer above the first section circuit, enters the hollow area, and connects to the adjacent second main circuit to form the second touch electrode. The second auxiliary circuit and the second section circuit are spaced apart on the surface of the insulating area. The second lead is on the same layer as the first main circuit and is connected to the second main circuit at the edge or to the second section circuit that crosses the insulating area. The edge of the second lead extends beyond the edge of the insulating layer. The second touch electrode and the first touch electrode are not electrically connected.

[0008] Preferably, the second main line includes a first part and a second part of the second main line arranged vertically. The first part of the second main line is located on the same layer as the first main line. The hollow area of ​​the insulating layer is located above the first part of the second main line, exposing all or part of the first part of the second main line. The second part of the second main line is stacked on the surface of the first part of the second main line, and is electrically connected to the first part of the second main line in a vertical contact, and is also electrically connected to the second section of the line.

[0009] Preferably, the first lead includes a first lead portion and a second lead portion; the first lead portion is located on the same layer as the first main line and is in direct contact with the first main line or the first section of the line; the second lead portion is located on the surface of the first lead portion and covers the portion of the first lead portion near the edge of the insulation layer, exposes the portion of the first lead portion away from the edge of the insulation layer, or completely covers the first lead portion.

[0010] Preferably, the second lead is in direct contact with the first part of the second main circuit, or the second lead is not in direct contact with the first part of the second main circuit; the second lead is partially located on the surface of the insulation layer, partially located on the same layer as the first main circuit, or entirely located on the surface of the insulation layer; the second lead includes a first part of the second lead and a second part of the second lead; the first part of the second lead is located on the same layer as the first main circuit and extends beyond the edge of the insulation layer; the second part of the second lead is located on the surface of the first part of the second lead and covers the part of the first part of the second lead near the edge of the insulation layer, exposes the part of the first part of the second lead away from the edge of the insulation layer, or completely covers the first part of the second lead, and the second part of the second lead is in direct contact with the second main circuit or the second section of the circuit on the surface of the insulation layer.

[0011] Preferably, the first section of the circuit, the surface insulation area of ​​the first section of the circuit, and the second section of the circuit are stacked sequentially in the longitudinal direction.

[0012] Preferably, the line width of the first section of the line is smaller than the line width of the first main line; the line width of the second section of the line is smaller than the line width of the second main line. Or the spacing between the first section of the line is greater than the spacing between the first main line; the spacing between the second section of the line is greater than the spacing between the second main line. Or the line density of the first section of the line is less than the line density of the first main line; the line density of the second section of the line is less than the line density of the second main line; Or any combination thereof.

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

[0014] Preferably, the difference in light transmittance between the first main line, the first section of the line, the first auxiliary line, and the first part of the second main line is less than 20%, and the difference in light transmittance between the second part of the second main line, the second section of the line, and the second auxiliary line is less than 20%. More preferably, the light transmittance of the first main line, the first section of the line, the first auxiliary line, and the first part of the second main line is equal, and the light transmittance of the second part of the second main line, the second section of the line, and the second auxiliary line is equal.

[0015] 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.

[0016] In this invention, the method for preparing the first touch electrode and the second touch electrode includes an electrode pattern etching method comprising: laser etching, photolithography, and / or wet etching; the method for preparing the edge lines of the first touch electrode and the second touch electrode comprises: one-time etching of a low-resistivity film material, etching the first touch electrode and the second main circuit while simultaneously etching the edge lines of the first touch electrode and the second touch electrode; screen printing silver paste, further screen printing silver paste and etching the edge lines; inkjet printing the edge lines, forming the edge lines by inkjet printing conductive ink; or copper plating the edge lines.

[0017] In this invention, the edge of the first touch electrode is in contact with and electrically connected to the first lead, and the edge of the first touch electrode is located on the same layer as the first main circuit; the edge of the second touch electrode is in contact with and electrically connected to the second lead, and the edge of the second touch electrode is located on the same layer as the first main circuit, or the edge of the second touch electrode is partially located on the same layer as the first main circuit and partially located on the surface of the insulating layer.

[0018] The touch module is a flexible touch module, employing a coverless design to reduce the use of a cover layer and effectively reduce the thickness of the touch display module. The touch module can also employ a cover-plate design, comprising a cover plate and adhesive for bonding the cover plate; the cover plate can be a rigid cover plate or a flexible cover plate.

[0019] 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.

[0020] This utility model designs the line width, line spacing, and line density of the first section (second section) and the first main line (second main line) to make the light absorption rate of the first section (second section) less than that of the first main line (second main line). This achieves the effect that the light transmittance at the overlap of the first and second sections is close to the light transmittance of the first main line (and / or the second main line), with no visual difference in optics.

[0021] The light transmittance of the first section of the circuit is higher than that of the first main circuit, and the light transmittance of the second section of the circuit is higher than that of the second main circuit. The difference between the light transmittance at the overlap of the first and second sections of the circuit and the light transmittance of the first main circuit (and / or the second main circuit) is less than 20%. Preferably, the light transmittance at the overlap of the first and second sections of the circuit is equal to the light transmittance of the first main circuit (and / or the second main circuit), and the light transmittance of the first main circuit is equal to that of the second main circuit.

[0022] The pattern of the first section of the line (the second section of the line) is the same as that of the first main line (the second main line), with the same line width, the same line spacing, and the same line density.

[0023] All lines located in the same layer have the same line width, line spacing, line density, and light transmittance. For the first touch electrode, the second main circuit, and the first auxiliary circuit located in the same layer, their light absorption rates and light transmittance are equal. Similarly, for the second section of the circuit and the second auxiliary circuit located in the same layer, their light absorption rates and light transmittance are equal. The resulting touch module has an optically consistent appearance with no visual differences. For the first touch electrode and the first auxiliary circuit located in the same layer, their light absorption rates and light transmittance are equal. Similarly, for the second touch electrode and the second auxiliary circuit located in the same layer, their light absorption rates and light transmittance are equal. The resulting touch module has an optically consistent appearance with no visual differences.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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-processing base film. The post-processing methods include, but are 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.

[0028] Compared with the prior art, the technical advantages of this utility model are: 1. The arrangement of the first and second auxiliary circuits better avoids optical visual differences caused by uneven circuit arrangement on the surface of the touch module; 2. It can avoid damaging the already formed lower layers when creating the upper layers; 3. A second part of the second touch electrode is provided on the upper layer of the first part of the second touch electrode, which increases the contact area of ​​the second touch electrode across the insulating layer, strengthens the effective electrical contact between different parts of the second touch electrode, and further improves the visual effect; 4. To avoid the influence of the lead wires on the upper layer of the circuitry, and to facilitate the contact and design of the edge wires. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the multi-layer structure of the touch module of this utility model; Figure a shows a schematic diagram of the first touch electrode, the first auxiliary circuit, the second main circuit, and the second lead located on the same layer of this utility model. Figure b is a schematic diagram of the insulating layer of this utility model covering the first main circuit, the first section of circuit, and the first auxiliary circuit, wherein the hollow area of ​​the insulating layer exposes part of the second main circuit; Figure c is a top view of the stacked structure of the touch function layer of this utility model. The second section of the circuit and the second auxiliary circuit are located on the surface of the insulating layer. The second section of the circuit crosses the insulating area above the first section of the circuit and enters the hollow area, connecting to the adjacent second main circuit.

[0031] Figure 2 This is a schematic diagram of the multi-layer structure of the touch module of this utility model; Figure a shows a schematic diagram of the first touch electrode, the first auxiliary circuit, the first part of the second main circuit, and the second lead located on the same layer of this utility model. Figure b is a schematic diagram of the insulating layer of this utility model covering the first main circuit, the first section of the circuit, and the first auxiliary circuit, wherein the hollow area of ​​the insulating layer exposes the entire first part of the second main circuit; Figure c is a top view of the stacked structure of the touch function layer of this utility model. The second section of the circuit and the second auxiliary circuit are located on the surface of the insulating area. The second part of the second main circuit is stacked on the surface of the first part of the second main circuit, and is electrically connected to the first part of the second main circuit perpendicularly, and is also electrically connected to the second section of the circuit.

[0032] Figure 3 This is a schematic diagram of the structure of the first lead and the insulating layer of this utility model; Figure a is a schematic diagram of the first lead wire of this utility model; Figure b is a schematic diagram of the edge line setting of the first touch electrode corresponding to Figure a. Figure c is a schematic diagram of the first lead of this utility model, including the first part of the first lead and the second part of the first lead; Figures d-e are schematic diagrams of the edge setting of the first touch electrode corresponding to Figure a.

[0033] Figure 4 This is a schematic diagram of the structure of the second lead and the insulating layer of this utility model; Figure a is a schematic diagram of the second lead wire of this utility model; Figure b is a schematic diagram of the edge line setting of the second touch electrode corresponding to Figure a; Figure c is a schematic diagram of the second lead wire according to another embodiment of the present invention; Figure d is a schematic diagram of the edge line setting of the second touch electrode corresponding to Figure c; Figure e is a schematic diagram of the second lead wire according to another embodiment of the present invention; Figure f is a schematic diagram of the edge line setting of the second touch electrode corresponding to Figure e; Figure g is a schematic diagram of the second lead wire in another embodiment of this utility model; Figure h and Figure i are schematic diagrams of the edge line setting of the second touch electrode corresponding to Figure g.

[0034] Figure 5 This is a schematic diagram of the design of the first main circuit (second main circuit) and the first section circuit (second section circuit) of this utility model; As shown in Figure a, the line density of the first main line (second main line) is greater than that of the first section line (second section line); as shown in Figure b, the line width of the first main line (second main line) is less than that of the first section line (second section line); as shown in Figure c, the line spacing of the first main line (second main line) is less than that of the first section line (second section line); as shown in Figure d, the first main line (second main line) and the first section line (second section line) have the same line width, the same line spacing, and the same line density.

[0035] Figure 6 This is a schematic diagram of the touch module structure of the utility model of this application; Figure label: 100 is the first touch electrode, 101 is the first main circuit, 102 is the first section of the circuit, 103 is the first lead, 1031 is the first part of the first lead, and 1032 is the second part of the first lead; 110 is the first auxiliary circuit; 120 is the edge line of the first touch electrode; 201 is the second main circuit, 2011 is the first part of the second main circuit, and 2012 is the second part of the second main circuit; 202 is the second section of the circuit; 203 is the second lead, 2031 is the first part of the second lead, and 2032 is the second part of the second lead; 210 is the second auxiliary circuit; 220 is the edge line of the second touch electrode; 300 is the insulating layer, 301 is the insulating area, and 302 is the hollow area; 01 is the touch functional layer; 02 is the substrate; and 03 is the functionalized layer. Detailed Implementation

[0036] 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.

[0037] Example 1 A touch module, comprising at least: Substrate 02: includes a first surface and a second surface; Touch function layer 01: Located on the first surface of the substrate, including a first touch electrode, a first auxiliary circuit, an insulating layer, a second touch electrode, and a second auxiliary circuit; the first touch electrode, the first auxiliary circuit, the second touch electrode, and the second auxiliary circuit are electrically insulated from each other; the lead of the first touch electrode extends beyond the outer edge of the insulating layer and contacts the edge line of the first touch electrode; the lead of the second touch electrode is located in the same layer as the first main circuit.

[0038] The first touch electrode includes a first main circuit, a first section circuit, and a first lead, with the first lead extending beyond the edge of the insulating region of the insulating layer. The insulating layer includes an insulating region and a cutout region, with the cutout region located inside the insulating region. The insulating region completely covers the first main circuit and the first section circuit. The cutout region is located above the second main circuit, exposing a portion of the second main circuit for easy contact and electrical connection with the second section circuit. The second touch electrode includes a second main circuit, a second section circuit, and a second lead. The second main circuit, the first auxiliary circuit, and the first touch electrode are located on the same layer of the first surface of the substrate and are spaced apart. The second section circuit is located directly above the first section circuit on the surface of the insulating layer, crossing the insulating region of the insulating layer above the first section circuit to enter the cutout region, connecting to the adjacent second main circuit to form the second touch electrode. The second auxiliary circuit and the second section circuit are spaced apart on the surface of the insulating region. The second lead is located on the same layer as the first main circuit and connects to the edge of the second main circuit, with its edge extending beyond the edge of the insulating layer. The second touch electrode has no electrical connection with the first touch electrode.

[0039] The touch module includes a functional layer (such as...) Figure 6 As shown), the functionalized layer 03 is located on the second surface of the substrate 02. 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. Its hardness is greater than 1H.

[0040] like Figure 1 Figure a shows a schematic diagram of the first touch electrode 100, the first auxiliary circuit 110, the second main circuit 201, and the second lead 203 located on the same layer of the present invention. It includes the first main circuit 101, the first section circuit 102, the first lead 103, the first auxiliary circuit 110, the second main circuit 201, and the second lead 203, wherein the first main circuit 101, the first section circuit 102, and the first lead 103 constitute the first touch electrode 100. Figure 1 Figure b in the figure is a schematic diagram of the insulating layer of this utility model covering the first main circuit, the first section of the circuit, and the first auxiliary circuit, wherein the hollow area of ​​the insulating layer exposes a part of the second main circuit. The insulating layer 300 includes an insulating area 301 and a hollow area 302, wherein the hollow area 302 exposes a part of the second main circuit, and the first lead 103 and the second lead 203 both extend beyond the edge of the insulating layer; Figure 1Figure c is a top view of the stacked structure of the touch function layer of this utility model. The second section of the circuit 202 and the second auxiliary circuit 210 are located on the surface of the insulating layer 300. The second section of the circuit 202 crosses the insulating area above the first section of the circuit and enters the hollow area 302, connecting to the adjacent second main circuit to form a conductive path. The second main circuit 201, the second section of the circuit 202, and the second lead 203 together form the second touch electrode.

[0041] Example 2 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, a first auxiliary circuit, an insulating layer, a second touch electrode, and a second auxiliary circuit; the first touch electrode, the first auxiliary circuit, the second touch electrode, and the second auxiliary circuit are electrically insulated from each other; the lead of the first touch electrode extends beyond the outer edge of the insulating layer and contacts the edge line of the first touch electrode; the lead of the second touch electrode is located in the same layer as the first main circuit.

[0042] The first touch electrode includes a first main circuit, a first section circuit, and a first lead, with the first lead extending beyond the edge of the insulating region of the insulating layer; the insulating layer includes an insulating region and a hollowed-out region, with the hollowed-out region located inside the insulating region, and the insulating region completely covering the first main circuit and the first section circuit.

[0043] The second main line includes a first part and a second part of the second main line arranged vertically. The first part of the second main line is located on the same layer as the first main line. The hollow area of ​​the insulation layer is located above the first part of the second main line, exposing all (or part) of the first part of the second main line. The second part of the second main line is stacked on the surface of the first part of the second main line, and is electrically connected to the first part of the second main line in a vertical contact, and is also electrically connected to the second section of the line.

[0044] The touch module includes a functional layer (such as...) Figure 6 As shown), the functionalized layer is located on the second surface of the substrate, and 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, and its hardness is greater than 1H.

[0045] Figure 2In the diagram, 'a' represents the first touch electrode 100, the first auxiliary circuit 110, the first part 2011 of the second main circuit, and the second lead 203 located on the same layer of this utility model. The diagram includes the first main circuit 101, the first section of the circuit 102, the first lead 103, the first auxiliary circuit 110, the second main circuit 201, and the second lead 203, wherein the first main circuit 101, the first section of the circuit 102, and the first lead 103 constitute the first touch electrode 100. Figure 2 Figure b in the figure is a schematic diagram of the insulating layer of this utility model covering the first main circuit, the first section of the circuit, and the first auxiliary circuit, wherein the hollow area of ​​the insulating layer exposes the entire first part of the second main circuit. The insulating layer 300 includes an insulating area 301 and a hollow area 302, wherein the hollow area 302 exposes the entire first part of the second main circuit, and the first lead 103 and the second lead 203 both extend beyond the edge of the insulating layer; Figure 2 Figure c is a top view of the stacked structure of the touch function layer of this utility model. The second section of the circuit 202 and the second auxiliary circuit 210 are located on the surface of the insulating area. The second part of the second main circuit 2012 is stacked on the surface of the first part of the second main circuit 2011 and is electrically connected to the first part of the second main circuit 2011 in a perpendicular contact to form the second main circuit. It is also electrically connected to the second section of the circuit 202. The second main circuit, the second section of the circuit, and the second lead wire constitute the second touch electrode.

[0046] Example 3 like Figure 3 As shown in a, this is a schematic diagram of the first lead of the present invention. The first lead 103 extends beyond the edge of the insulating layer 300. Figure 3 b in Figure 3 The diagram shows the setting of the first touch electrode edge line 120 corresponding to 'a' in the figure. The first touch electrode edge line 120 is connected to the first lead 103.

[0047] Figure 3 In the diagram, 'c' represents the first lead of this utility model, which includes a first part 1031 and a second part 1032. Figure 3 d- Figure 3 e in Figure 3The diagram shows the edge configuration of the first touch electrode corresponding to 'a'. The first lead 103 includes a first part 1031 and a second part 1032. The first part 1031 is located on the same layer as the first main circuit and is in direct contact with the first main circuit or the first section of the circuit. The second part 1032 is located on the surface of the first part and covers the portion of the first part near the edge of the insulating layer, exposing the portion of the first part away from the edge of the insulating layer, or completely covering the first part. The first touch electrode edge 120 is in contact with and electrically connected to the first lead, and the first touch electrode edge is located on the same layer as the first main circuit.

[0048] The second lead is in direct contact with the first part of the second main line, or the second lead is not in direct contact with the first part of the second main line; part of the second lead is located on the surface of the insulation layer, part is located on the same layer as the first main line, or all of the second lead is located on the surface of the insulation layer.

[0049] Figure 4 In this diagram, 'a' represents the second lead of this utility model. Figure 4 b in Figure 4 The diagram shows the edge setting of the second touch electrode corresponding to 'a'. The second lead 203 is located on the same layer as the first main circuit and is in direct contact with the second main circuit or the first part of the second main circuit on the same layer, extending beyond the edge of the insulating layer 300. The edge of the second touch electrode 220 is located on the same layer as the first main circuit.

[0050] Figure 4 c in the diagram is another schematic diagram of the second lead of this utility model; Figure 4 d in Figure 4 The diagram shows the edge configuration of the second touch electrode corresponding to 'c'. Part of the second lead 203 is located on the surface of the insulating layer 300, and part is located on the same layer as the first main circuit. The edge of the second touch electrode 220 is located on the same layer as the first main circuit.

[0051] Figure 4 In this diagram, 'e' represents another second lead of the present invention. Figure 4 f in Figure 4 The diagram shows the edge configuration of the second touch electrode corresponding to 'e'. All second leads 203 are located on the surface of the insulating layer 300, and all second touch electrode edge lines 220 are located on the surface of the insulating layer 300.

[0052] Figure 4 In this diagram, 'g' represents another second lead of the present invention. Figure 4 h and Figure 4 i in Figure 4 The diagram shows the edge setting of the second touch electrode corresponding to g.

[0053] The second lead 203 includes a first part 2031 and a second part 2032; the first part 2031 is located on the same layer as the first main line and extends beyond the edge of the insulation layer 300; the second part 2032 is located on the surface of the first part 2031 and covers the part of the first part near the edge of the insulation layer, exposes the part of the first part away from the edge of the insulation layer, or completely covers the first part, and the second part is in direct contact with the second main line or the second section of the line on the surface of the insulation layer.

[0054] Example 4 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, a first auxiliary circuit, an insulating layer, a second touch electrode, and a second auxiliary circuit; the first touch electrode, the first auxiliary circuit, the second touch electrode, and the second auxiliary circuit are electrically insulated from each other; the lead of the first touch electrode extends beyond the outer edge of the insulating layer and contacts the edge line of the first touch electrode; the lead of the second touch electrode is located in the same layer as the first main circuit.

[0055] The first touch electrode includes a first main circuit, a first section circuit, and a first lead, with the first lead extending beyond the edge of the insulating region of the insulating layer. The insulating layer includes an insulating region and a cutout region, with the cutout region located inside the insulating region and completely covering the first main circuit and the first section circuit. The cutout region is located above the second main circuit, exposing all (or part) of the second main circuit for easy contact and electrical connection with the second section circuit. The second touch electrode includes a second main circuit, a second section circuit, and a second lead. The second main circuit, the first auxiliary circuit, and the first touch electrode are located on the same layer of the first surface of the substrate and are spaced apart. The second section circuit is located directly above the first section circuit on the surface of the insulating layer, crossing the insulating region of the insulating layer above the first section circuit to enter the cutout region, connecting to the adjacent second main circuit to form the second touch electrode. The second auxiliary circuit and the second section circuit are spaced apart on the surface of the insulating region. The second lead is located on the same layer as the first main circuit and connects to the second main circuit at the edge, with its edge extending beyond the edge of the insulating layer. The second touch electrode has no electrical connection with the first touch electrode.

[0056] The light transmittance of the first section of the circuit is higher than that of the first main circuit, and the light transmittance of the second section of the circuit is higher than that of the second main circuit. The difference between the light transmittance at the overlap of the first and second sections of the circuit and the light transmittance of the first and / or second main circuits is less than 20%. The difference between the light transmittance of the first main circuit and the light transmittance of the second main circuit is less than 20%. Preferably, the light transmittance at the overlap of the first and second sections of the circuit is equal to the light transmittance of the first and / or second main circuits, and the light transmittance of the first main circuit is equal to that of the second main circuit.

[0057] Figure 5 In the diagram, ac represents the schematic design of the first main line (second main line) and the first section line (second section line) of this utility model; as shown in a, the line density of the first main line 101 (second main line 201) is greater than the line density of the first section line 102 (second section line 202); as shown in b, the line width of the first main line 101 (second main line 201) is less than the line width of the first section line 102 (second section line 202); as shown in c, the line spacing of the first main line 101 (second main line 201) is less than the line spacing of the first section line 102 (second section line 202).

[0058] Example 5 The second main line includes a first part and a second part of the second main line arranged vertically. The first part of the second main line is located on the same layer as the first main line. The hollow area of ​​the insulation layer is located above the first part of the second main line, exposing all (or part) of the first part of the second main line. The second part of the second main line is stacked on the surface of the first part of the second main line, and is electrically connected to the first part of the second main line in a vertical contact, and is also electrically connected to the second section of the line.

[0059] The difference in light transmittance between the first main line, the first section of the line, the first auxiliary line, and the first part of the second main line is less than 20%, and the difference in light transmittance between the second part of the second main line, the second section of the line, and the second auxiliary line is less than 20%. Preferably, the light transmittance of the first main line, the first section of the line, the first auxiliary line, and the first part of the second main line is equal, and the light transmittance of the second part of the second main line, the second section of the line, and the second auxiliary line is equal.

[0060] Figure 5 The diagram shown in Figure d is a schematic diagram of the pattern design of the first main line (second main line) and the first section line (second section line) of this utility model. The first main line 101, the first part 2011 of the second main line and the first section line 102 have the same line width, the same line spacing and the same line density. The second part 2012 of the second main line and the second section line 202 have the same line width, the same line spacing and the same line density.

[0061] Example 6 A method for manufacturing the touch module, comprising: 1) The first main circuit, the first section circuit, the first lead, the first auxiliary circuit, the second main circuit, and 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 and the second main circuit layer using various methods such as screen printing, inkjet printing, slot coating, micro-gravure coating, and roller coating; 3) Fabrication of insulating layer patterns, including photolithography and / or wet etching; 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 section of the circuit and the second auxiliary circuit pattern are prepared by photolithography and / or wet etching; 6) The method for fabricating the edge lines of the touch module includes: one-time etching of low-resistivity film material, etching the edge lines of the first touch electrode and the second main circuit at the same time; 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.

[0062] Example 7 A method for manufacturing the touch module includes: 1) The first main circuit, the first section of the circuit, the first lead, the first auxiliary circuit, the first part of the second main circuit, 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 and the first part of the second main circuit using various methods such as screen printing, inkjet printing, and roller coating; 3) Patterns of the second main circuit, the second section of the 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; 6) The method for fabricating the edge lines of the touch module includes: one-time etching of low-resistivity film material, etching the edge lines of the first touch electrode and the second main circuit at the same time; 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.

[0063] The first main circuit, the first section of the circuit, and the first lead wire, as well as the second main circuit, the second section of the circuit, and the second lead wire, can all be arranged and combined to realize this technical solution. Examples are not listed here.

[0064] For any content not described in detail in this utility model, conventional technical knowledge in the field can be used.

[0065] 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: Including the first surface and the second surface; Touch function layer: located on the first surface of the substrate, including a first touch electrode, a first auxiliary circuit, an insulating layer, a second touch electrode and a second auxiliary circuit; The first touch electrode, the first auxiliary circuit, the second touch electrode, and the second auxiliary circuit are electrically insulated from each other; The lead of the first touch electrode extends beyond the outer edge of the insulating layer and contacts the edge line of the first touch electrode; the lead of the second touch electrode is located on the same layer as the first main circuit.

2. The touch module according to claim 1, characterized in that, The first touch electrode includes a first main circuit, a first section circuit, and a first lead, with the first lead extending beyond the edge of the insulating region of the insulating layer; the insulating layer includes an insulating region and a hollowed-out region, with the hollowed-out region located inside the insulating region and the insulating region completely covering the first main circuit and the first section circuit; the hollowed-out region is located above the second main circuit, exposing all or part of the second main circuit to facilitate contact electrical connection with the second section circuit; The second touch electrode includes a second main circuit, a second section circuit, and a second lead. The second main circuit, the first auxiliary circuit, and the first touch electrode are located on the same layer of the first surface of the substrate and are spaced apart. The second section circuit is located directly above the first section circuit on the surface of the insulating layer, crosses the insulating area of ​​the insulating layer above the first section circuit, enters the hollow area, and connects to the adjacent second main circuit to form the second touch electrode. The second auxiliary circuit and the second section circuit are spaced apart on the surface of the insulating area. The second lead is on the same layer as the first main circuit and is connected to the second main circuit at the edge or to the second section circuit that crosses the insulating area. The edge of the second lead extends beyond the edge of the insulating layer. The second touch electrode and the first touch electrode are not electrically connected.

3. The touch module according to claim 2, characterized in that, The second main line includes a first part and a second part of the second main line arranged vertically. The first part of the second main line is located on the same layer as the first main line. The hollow area of ​​the insulating layer is located above the first part of the second main line, exposing all or part of the first part of the second main line. The second part of the second main line is stacked on the surface of the first part of the second main line, and is electrically connected to the first part of the second main line in a vertical contact, and is also electrically connected to the second section of the line.

4. The touch module according to claim 2, characterized in that, The first lead includes a first lead portion and a first lead portion; the first lead portion is located on the same layer as the first main line and is in direct contact with the first main line or the first section of the line; the second lead portion is located on the surface of the first lead portion and covers the portion of the first lead portion near the edge of the insulation layer, exposes the portion of the first lead portion away from the edge of the insulation layer, or completely covers the first lead portion.

5. A touch module according to claim 3, characterized in that, The second lead is in direct contact with the first part of the second main circuit, or the second lead is not in direct contact with the first part of the second main circuit; the second lead is partially located on the surface of the insulation layer, partially located on the same layer as the first main circuit, or entirely located on the surface of the insulation layer; the second lead includes a first part of the second lead and a second part of the second lead, the first part of the second lead is located on the same layer as the first main circuit and extends beyond the edge of the insulation layer, the second part of the second lead is located on the surface of the first part of the second lead and covers the part of the first part of the second lead that is close to the edge of the insulation layer, exposes the part of the first part of the second lead that is far from the edge of the insulation layer, or completely covers the first part of the second lead, and the second part of the second lead is in direct contact with the second main circuit or the second section of the circuit on the surface of the insulation layer.

6. A touch module according to claim 2, characterized in that, The first section of the circuit, the surface insulation area of ​​the first section of the circuit, and the second section of the circuit are stacked sequentially in the longitudinal direction.

7. A touch module according to claim 2, characterized in that, The line width of the first section of the line is smaller than the line width of the first main line; the line width of the second section of the line is smaller than the line width of the second main line. Or the spacing between the first section of the line is greater than the spacing between the first main line; the spacing between the second section of the line is greater than the spacing between the second main line. Or the line density of the first section of the line is less than the line density of the first main line; the line density of the second section of the line is less than the line density of the second main line; Or any combination thereof.

8. A touch module according to claim 2, characterized in that, The light transmittance of the first section of the circuit is higher than that of the first main circuit, the light transmittance of the second section of the circuit is higher than that of the second main circuit, and the difference between the light transmittance at the overlap of the first section of the circuit and the second section of the circuit and the light transmittance of the first main circuit and / or the second main circuit is less than 20%; the difference between the light transmittance of the first main circuit and the second main circuit is less than 20%.

9. A touch module according to claim 2, characterized in that, The difference in light transmittance between the first main line, the first section of the line, the first auxiliary line, and the first part of the second main line is less than 20%, and the difference in light transmittance between the second part of the second main line, the second section of the line, and the second auxiliary line is less than 20%.

10. A touch module according to any one of claims 1-3, 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.

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