Metal mesh touchscreen and light mask

Abstract

This invention provides a metal mesh touchscreen and a photomask. The metal mesh touchscreen includes a light-transmitting insulating substrate and touch electrodes. The light-transmitting insulating substrate includes a first surface and a second surface disposed opposite to each other along its thickness direction. The touch electrodes include a touch area and a non-touch display area disposed side by side. Each touch electrode includes a first electrode layer, an insulating layer, and a second electrode layer stacked along its thickness direction. In the touch area, each of the first electrode layer and the second electrode layer has a lead wire, which can interact with external circuit signals. In the non-touch display area, one of the first electrode layer and the second electrode layer does not have a lead wire. Therefore, the metal mesh touchscreen according to this invention has the advantages of simplified circuit design, strong anti-interference ability, and improved interaction capability of vehicle touch modules.

Description

Technical Field

[0001] This utility model relates to the field of touch screen technology, specifically to a metal mesh touch screen and a photomask for manufacturing the metal mesh touch screen. Background Technology

[0002] With the advancement of vehicle electrification and intelligentization, and the improvement of smart cockpit technology, the application of large-size in-vehicle touchscreens is becoming increasingly common. As a key component of the vehicle's central control system, the requirements for in-vehicle touchscreens differ significantly from those of ordinary electronic products. In automobiles, touchscreens are primarily used for the central control screen, while touch functionality is typically absent in areas displaying vehicle driving information to ensure driving safety. Furthermore, touchscreens are often designed to be located on at least one side of the display area to provide a more convenient operating experience. Leads from non-touch display areas connected to touch ICs (touch sensing chips) pose a risk of accidental touches, which is detrimental to safe driving. Utility Model Content

[0003] In view of this, the present invention aims to provide a metal mesh touch screen and a touch module to solve the problems of complex wiring and accidental touch risk in the prior art of metal mesh touch screens.

[0004] This utility model provides a metal mesh touch screen.

[0005] This utility model provides a touch module.

[0006] The metal mesh touch screen of this utility model embodiment includes a light-transmitting insulating substrate and touch electrodes.

[0007] The light-transmitting insulating substrate includes a first surface and a second surface disposed opposite to each other along its thickness direction; the touch electrode includes a touch area and a non-touch display area disposed side by side, and the touch electrode includes a first electrode layer, an insulating layer and a second electrode layer stacked in its thickness direction. In the touch area, each of the touch signal units in the first electrode layer and the second electrode layer is provided with a lead wire, and the lead wire of each of the touch signal units in the first electrode layer and the second electrode layer can interact with external circuit signals. In the non-touch display area, one of the touch signal units in the first electrode layer and the touch signal units in the second electrode layer is not provided with a lead wire.

[0008] In this embodiment of the metal mesh touchscreen, touch performance is optimized by omitting the lead wires of the touch signal units of the first electrode layer or the second electrode layer in the non-touch display area. This helps reduce the wiring density of the lead wires, avoiding complex wiring crossovers and simplifying the wiring and bonding design, which also helps reduce the bezel width. Furthermore, the electrode layer in the non-touch display area does not require lead wires, thus eliminating lead wire processing steps, reducing waste from metal deposition and etching, and effectively saving silver paste or copper materials. This further helps save on material and manufacturing costs. Reducing unnecessary lead wires not only reduces overall connection points and interference sources but also helps improve system reliability and anti-interference capabilities.

[0009] Furthermore, the side-by-side arrangement of touch and non-touch display areas, when applied to vehicles, allows the touch module to be divided into multiple functional zones, such as an instrument panel, a central control screen, and a passenger entertainment screen. This more effectively enhances the vehicle's human-machine interaction experience while giving the vehicle a stronger sense of modern technology.

[0010] Therefore, the metal mesh touch screen of this utility model, by adopting a specific metal mesh design, not only simplifies the circuit design, but also enhances the anti-interference ability and improves the interactive capability of the vehicle touch module.

[0011] In one embodiment, the first electrode layer includes a transmitting electrode unit, the second electrode layer includes a receiving electrode unit, and in the non-touch display area, the touch signal unit of the first electrode layer is provided with a lead-out line for interacting with external circuit signals, while the touch signal unit of the second electrode layer is not provided with a lead-out line.

[0012] In one embodiment, the touch area includes a first touch partition and a second touch partition, which are disposed opposite to each other on both sides of the non-touch display area. In both the first touch partition and the second touch partition, the touch signal unit of the first electrode layer and the touch signal unit of the second electrode layer are provided with lead-out lines for signal interaction with external circuits.

[0013] In one embodiment, a first bonding area is provided on one side of the frame of the touch electrode, and the leads of the first electrode layer in both the first touch partition and the second touch partition are led to the first bonding area. A second bonding area is provided on one side of the frame of the touch electrode, and the leads of the second electrode layer in both the first touch partition and the second touch partition are led to the second bonding area.

[0014] In one embodiment, both the second binding area and the first binding area are disposed on the side of the first touch partition of the touch electrode away from the non-touch display area. The lead wires of the first electrode layer corresponding to the second touch partition are arranged around the frame of the touch electrode, and the lead wires of the second electrode layer corresponding to the second touch partition are arranged around the other frame of the touch electrode.

[0015] In one embodiment, the touch signal unit of the first electrode layer includes a first signal channel and a plurality of second signal channels arranged along a first direction, and the touch signal unit of the second electrode layer includes a plurality of third signal channels arranged along a second direction. The first signal channels are disposed in at least a portion of the non-touch display area, each of the first signal channels is bent, and a portion of the first signal channel is arranged parallel to the third signal channel. The first direction is perpendicular to the second direction.

[0016] In one embodiment, each of the first signal channels is arranged in an L-shape.

[0017] In one embodiment, the first signal channel has a first grid pattern, the second signal channel has a second grid pattern, and the third signal channel has a third grid pattern, wherein the lines constituting the second grid pattern and the lines constituting the third grid pattern are staggered in the thickness direction of the light-transmitting insulating substrate.

[0018] In one embodiment, there are no nodes between the first grid patterns of two adjacent first signal channels, no nodes between the second grid patterns of two adjacent second signal channels, and no nodes between the third grid patterns of two adjacent third signal channels.

[0019] In one embodiment, each line constituting the second grid pattern forms an angle with each of the first direction and the second direction; each line constituting the third grid pattern forms an angle with each of the first direction and the second direction.

[0020] The photomask of this utility model embodiment includes a first photomask body and a second photomask body. The first photomask body includes a first pattern area and a first peripheral area located around the first pattern area. The second photomask body includes a second pattern area and a second peripheral area located around the second pattern area. The edge of the first pattern area forms a lead pattern extending to the first peripheral area. In the non-touch display area, at least a portion of the connection between the second pattern area and the second peripheral area is not provided with a lead pattern. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the touch electrode according to an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 Enlarged view at point A.

[0023] Figure 3 This is a schematic diagram of the structure of the first electrode layer in an embodiment of this utility model.

[0024] Figure 4 yes Figure 3 Enlarged view at point B.

[0025] Figure 5 yes Figure 3 Enlarged view at point C.

[0026] Figure 6 This is a schematic diagram of the structure of the second electrode layer in an embodiment of the present invention.

[0027] Figure 7 yes Figure 6 Enlarged view at point D.

[0028] Figure 8 yes Figure 6 Enlarged view at point E.

[0029] Explanation of reference numerals in the attached figures: Touch electrode 1; First touch zone 101; Non-touch display area 102; Second touch zone 103; First binding zone 104; Second binding zone 105; First electrode layer 11; First signal channel 111; Second signal channel 112; Second grid pattern 1121; Insulation layer 12; Second electrode layer 13; Third signal channel 131; Third grid pattern 1311; Lead-out line 14. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] The following is for reference. Figures 1-8 The following describes, by way of example, the metal mesh touch screen and touch module of the present invention.

[0032] The metal mesh touch screen of this utility model embodiment includes a light-transmitting insulating substrate and a touch electrode 1. The light-transmitting insulating substrate includes a first surface and a second surface disposed opposite to each other along its thickness direction; the touch electrode 1 includes a touch area and a non-touch display area 102 disposed side by side, and the touch electrode 1 includes a first electrode layer 11, an insulating layer 12 and a second electrode layer 13 stacked together. In the touch area, the lead 14 of each of the touch signal units of the first electrode layer 11 and the touch signal units of the second electrode layer 13 can interact with external circuit signals. In the non-touch display area 102, one of the touch signal units of the first electrode layer 11 and the touch signal units of the second electrode layer 13 is not provided with a lead 14.

[0033] The metal mesh touchscreen of this embodiment omits lead wires 14 from one of the touch signal units in the first electrode layer 11 and the second electrode layer 13 corresponding to the non-touch display area 102. This helps reduce the wiring density of the lead wires 14, effectively avoiding the problem of complex wiring intersections, thus simplifying wiring and bonding design, and helping to reduce the bezel width. Simultaneously, by eliminating lead wires from the electrode layer of the non-touch display area 102, the processing of lead wires 14 in this area can be eliminated, reducing unnecessary metal deposition and etching, and saving silver paste or copper materials. This further helps to save materials and manufacturing costs. Reducing unnecessary lead wires not only reduces the number of overall connection points and interference sources, but also improves the system's reliability and anti-interference capability to a certain extent.

[0034] Furthermore, the side-by-side arrangement of the touch and non-touch display areas 102, when applied to a vehicle, allows the touch module to be divided into multiple functional areas, such as an instrument panel, a central control screen, and a passenger entertainment screen. This further enhances the vehicle's human-machine interaction capabilities and strengthens its modern technological feel.

[0035] Therefore, the metal mesh touch screen of this utility model embodiment has the advantages of simplified circuit design, strong anti-interference ability, and improved interaction capability of vehicle touch module.

[0036] like Figure 1 , Figure 3 and Figure 6 As shown, the first electrode layer 11 includes a transmitting electrode unit, and the second electrode layer 13 includes a receiving electrode unit. In the non-touch display area 102, the first electrode layer 11 has a lead-out line 14 for signal interaction with external circuits, while the second electrode layer 13 does not have a lead-out line 14. Specifically, the first electrode layer 11 (containing multiple TX signal channels) is the transmitting electrode unit for transmitting signals. The second electrode layer 13 (containing multiple RX signal channels) is the receiving electrode unit for receiving capacitance changes.

[0037] Since the first electrode layer 11 acts as the driving end and outputs a strong signal, it possesses strong anti-interference capabilities. The second electrode layer 13, acting as the "sensing end" for receiving signals, can sense and receive weak capacitance changes. If the RX electrode or its lead 14 extends too far or is suspended in the non-touch area, the second electrode layer 13 is more susceptible to electromagnetic interference than the first electrode layer 11, leading to crosstalk problems. Therefore, the electrodes and lead 14 of the second electrode layer 13 in the non-touch area should be simplified as much as possible to reduce the risk of noise coupling. Therefore, in this embodiment of the metal mesh touchscreen, the second electrode layer 13 in the non-touch display area 102 adopts a no-lead design, thereby enhancing the overall anti-interference capability.

[0038] like Figure 1 As shown, the touch area includes a first touch partition 101 and a second touch partition 103. The first touch partition 101 and the second touch partition 103 are disposed opposite each other on both sides of the non-touch display area 102. In the first touch partition 101 and the second touch partition 103, the touch signal units of the first electrode layer 11 and the touch signal units of the second electrode layer 13 are provided with lead-out lines 14 for signal interaction with external circuits. That is to say, the metal mesh touch screen of this utility model embodiment can be used for integrated through-screen displays.

[0039] The metal mesh touchscreen of this embodiment of the utility model features a first touch zone 101 and a second touch zone 103 positioned opposite each other on either side of the non-touch display area 102, meaning that both sides of the non-touch display area 102 are equipped with touchable areas. This split-screen design avoids the problem of the driver accidentally touching the instrument panel area and becoming distracted if the entire large screen supported touch control. During assembly, an integrated glass cover is used to achieve a seamless visual connection and effectively utilize the lateral space of the center console. This not only enhances the interior's quality but also helps to clearly define functional zones, ensuring that driving, information, and entertainment functions operate independently and efficiently.

[0040] For example, the manufactured in-vehicle displays can correspond to the central control screen, instrument panel screen, and passenger entertainment screen. The instrument panel displays the operating status of various vehicle systems, such as a digital speedometer, tachometer, oil pressure gauge, coolant temperature gauge, fuel gauge, charging gauge, and various indicator lights. The central control screen is cleverly positioned on the left side of the vehicle, integrating multiple functions such as the central locking system, window control, and central console. The passenger entertainment screen is installed to the right of the central control screen, located in the passenger seat, and includes navigation, air conditioning, and entertainment functions.

[0041] like Figure 1 , Figure 3 and Figure 6As shown, in this invention, the frame of the touch electrode 1 is provided with a first bonding area 104, so that the lead wires 14 of the first electrode layer 11 in the first touch partition 101 and the second touch partition 103 can be effectively led to the first bonding area 104. A second bonding area 105 is provided on one side of the frame of the touch electrode 1, and the lead wires 14 of the second electrode layer 13 in the first touch partition 101 and the second touch partition 103 are all led to the second bonding area 105.

[0042] The metal mesh touchscreen of this embodiment of the invention leads the lead-out lines 14 of the touch signal units of the first electrode layer 11 in the first touch partition 101 and the second touch partition 103 to the first bonding area 104, and leads the lead-out lines 14 of the touch signal units of the second electrode layer 13 in the first touch partition 101 and the second touch partition 103 to the second bonding area 105. In other words, the two touch areas use the same bonding points, reducing the amount of FPC (flexible printed circuit board) and touch IC used, which helps maintain touch consistency.

[0043] like Figure 1 , Figure 3 and Figure 6 As shown, the second binding area 105 and the first binding area 104 are both located on the side of the first touch partition 101 away from the non-touch display area 102. The lead wires 14 of the first electrode layer 11 corresponding to the second touch partition 103 are arranged around the edge of the touch electrode 1. The lead wires 14 of the second electrode layer 13 corresponding to the second touch partition 103 are arranged around the other edge of the touch electrode 1.

[0044] The metal mesh touchscreen of this embodiment features a second bonding area 105 and a first bonding area 104 both located on the side of the first touch zone 101 away from the non-touch display area 102. This means they are bonded on the same side, with the pads and FPC only on one side (e.g., the right side). The other three sides can have extremely narrow bezels, which helps improve the screen-to-body ratio. This design is suitable for "full-screen" and "ultra-narrow bezel" designs. Furthermore, all touch signals are concentrated on a single FPC, facilitating maintenance and replacement.

[0045] The lead wires 14 of the second electrode layer 13 corresponding to the second touch zone 103 are arranged around the edge of the touch electrode 1. The lead wires can be routed through the edge of the non-touch display area 102, which can achieve a unified visual effect and reduce the width of the edge.

[0046] like Figure 1 , Figure 3 and Figure 6As shown, the touch signal unit of the first electrode layer 11 includes a first signal channel 111 and a plurality of second signal channels 112 arranged along a first direction. The touch signal unit of the second electrode layer 13 includes a plurality of third signal channels 131 arranged along a second direction. The first signal channel 111 is disposed in the non-touch display area 102. A portion of each first signal channel 111 is arranged parallel to the third signal channel 131. The first direction is perpendicular to the second direction.

[0047] If the non-touch area TX has a horizontal grid and RX has a vertical grid, the intersection of the two layers will form periodic interference fringes (moiré patterns). In this embodiment of the metal mesh touchscreen, a portion of the first signal channel 111 in the non-touch display area 102 is arranged parallel to the third signal channel 131. Since nodes are not needed in the non-touch area, this helps to unify the grid direction. Setting the main extension directions of the two metal mesh layers to be consistent (e.g., both horizontal) can significantly reduce or eliminate the cross-interference of the non-touch display area 102. By adopting a metal mesh structure, interference fringes generated by the double-layer intersection can be effectively avoided, thereby achieving excellent far-field shielding and suppressing electromagnetic interference. Furthermore, setting the RX electrode direction to be consistent with TX (e.g., both horizontally arranged), and designing the first signal channel 111 to be grounded or floating, can serve as a shielding line, further helping to reduce signal interference.

[0048] like Figure 1 and Figure 3 As shown, each first signal channel 111 is arranged in an L-shape. This means the geometry of the electrodes is L-shaped, consisting of a horizontal section and a vertical section of conductor connected together. Figure 3 As shown, the lateral electrode "turns" upward through an L-shaped structure.

[0049] The metal mesh touch screen of this utility model avoids long-distance parallel wiring by setting each first signal channel 111 in an L-shape, reduces the crossing of lead wires 14 between different electrode layers, and supports narrow bezels and high-density wiring.

[0050] like Figure 3 and Figure 4 As shown, the first signal channel 111 has a first grid pattern, and the second signal channel 112 has a second grid pattern 1121. Figure 6 and Figure 7 As shown, the third signal channel 131 has a third grid pattern 1311, and the lines that make up the second grid pattern 1121 and the lines that make up the third grid pattern 1311 are staggered in the thickness direction of the light-transmitting insulating substrate.

[0051] The metal mesh touchscreen of this embodiment effectively reduces interference between the second signal channel 112 and the third signal channel 131 caused by overlapping or parallel arrangement by staggering the lines forming the first mesh pattern with those forming the second mesh pattern 1121 in the thickness direction of the light-transmitting substrate layer. This reduces the mutual influence between electric fields and thus reduces signal crosstalk, thereby improving the spatial resolution of the touch panel. Therefore, the staggered mesh pattern lines help improve the accuracy of touch detection.

[0052] like Figure 4 and Figure 7 As shown, there are no nodes between the first grid patterns of two adjacent first signal channels 111, no nodes between the second grid patterns 1121 of two adjacent second signal channels 112, and no nodes between the third grid patterns 1311 of two adjacent third signal channels 131.

[0053] The metal mesh touchscreen of this embodiment of the invention, by eliminating any nodes between the mesh patterns of adjacent signal channels, ensures a uniform distribution of the electric field in the touch area, avoiding problems such as blind spots and slow response. Simultaneously, the node-free structure reduces direct contact between conductive lines, effectively reducing mutual interference between signals. Therefore, this contributes to improving the accuracy and response speed of touch sensing. Furthermore, each line of the second mesh pattern 1121 and the third mesh pattern 1311 maintains a certain angle with the first and second directions.

[0054] Because if the lines of the metal mesh are aligned with or parallel to the direction of the display pixels, moiré patterns may occur. The metal mesh touchscreen of this embodiment effectively disperses these interference fringes by ensuring that each line forming the first mesh pattern forms an angle with both the first and second directions, reducing or eliminating visual interference and thus improving the user's visual experience. Furthermore, by setting the lines at specific angles, the signal distribution of the sensing electrode layer can be optimized, ensuring that the sensing points uniformly cover the touch panel surface, thereby avoiding touch blind spots and insensitive responses. Therefore, this type of metal mesh touchscreen has the advantages of reducing visual interference and improving user experience.

[0055] Each line forming the second grid pattern 1121 and each line forming the third grid pattern 1311 forms an angle with each of the first and second directions. Similarly, this design aims to reduce or eliminate visual distractions and enhance the user's visual experience.

[0056] Optionally, the angle between each line forming the first grid pattern and each line forming the second grid pattern 1121 and the first direction is 25°-75°. Therefore, visual interference can be further reduced or eliminated, and the user's visual experience can be enhanced.

[0057] The width of each line forming the first grid pattern is 2μm-10μm. The width of each line forming the second grid pattern 1121 is 2μm-10μm. The width of each line forming the third grid pattern 1311 is 2μm-10μm.

[0058] The metal mesh touchscreen of this embodiment strictly limits the width range of each line in the first and / or second mesh patterns 1121. This avoids the problem of excessively wide lines in the first mesh pattern, which would lead to excessive light obstruction, resulting in reduced overall screen brightness and deteriorated visual effects. Furthermore, wider lines are more likely to interfere with the pixel arrangement of the display screen, causing moiré patterns. Conversely, it avoids the problem of excessively narrow lines in the first and / or second mesh patterns 1121, which would increase resistance, increase signal transmission loss, and affect touch response speed and stability. Therefore, the metal mesh touchscreen of this embodiment has the advantages of improved display effect, high response stability, and high reliability.

[0059] Optionally, the width of each line constituting the first grid pattern, the width of each line constituting the second grid pattern 1121, and the width of each line constituting the third grid pattern 1311 can all be 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, or 10μm.

[0060] The photomask of this utility model embodiment can be made of glass or PET material, and is used to manufacture a metal mesh touch screen of any one of the above. It is characterized by including a first photomask body and a second photomask body. The first photomask body includes a first pattern area and a first peripheral area located around the first pattern area. The second photomask body includes a second pattern area and a second peripheral area located around the second pattern area. The edge of the first pattern area forms a lead pattern extending to the first peripheral area. In the non-touch display area, at least a portion of the connection between the second pattern area and the second peripheral area is not provided with a lead pattern.

[0061] The metal mesh touchscreen fabricated using this photomask has the advantages of simplified circuit design, strong anti-interference ability, and improved interactive capabilities of vehicle touch modules.

[0062] For example, a lead pattern (fine lines) is pre-designed on a photomask. Ultraviolet light passes through the photomask, projecting the pattern onto the photoresist. The exposed (or unexposed) photoresist is removed; the remaining photoresist forms a protective template for the lead wires. Corresponding etching and photoresist removal then form the lead pattern, the first grid pattern, the second grid pattern, and the third grid pattern.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A metal mesh touchscreen, characterized in that, include: A light-transmitting insulating substrate, the light-transmitting insulating substrate including a first surface and a second surface disposed opposite to each other along its thickness direction; The touch electrode includes a touch area and a non-touch display area arranged side by side. The touch electrode includes a first electrode layer, an insulating layer, and a second electrode layer stacked in its thickness direction. In the touch area, each of the touch signal units in the first electrode layer and the second electrode layer has a lead-out line. The lead-out line of each of the touch signal units in the first electrode layer and the second electrode layer can interact with external circuit signals. In the non-touch display area, one of the touch signal units in the first electrode layer and the second electrode layer does not have a lead-out line.

2. The metal mesh touchscreen according to claim 1, characterized in that, The first electrode layer includes a transmitting electrode unit, and the second electrode layer includes a receiving electrode unit. In the non-touch display area, the touch signal unit of the first electrode layer is provided with a lead-out line for signal interaction with external circuits, while the second electrode layer is not provided with a lead-out line.

3. The metal mesh touchscreen according to claim 1, characterized in that, The touch area includes a first touch partition and a second touch partition, which are disposed opposite to each other on both sides of the non-touch display area. In the first touch partition and the second touch partition, the touch signal unit of the first electrode layer and the touch signal unit of the second electrode layer are provided with lead-out lines for signal interaction with external circuits.

4. The metal mesh touchscreen according to claim 3, characterized in that, A first bonding area is provided on one side of the frame of the first electrode layer, and the lead wires of the first electrode layer in the first touch partition and the second touch partition are all led to the first bonding area; A second bonding area is provided on one side of the frame of the second electrode layer, and the lead wires of the second electrode layer in the first touch partition and the second touch partition are all led to the second bonding area.

5. The metal mesh touchscreen according to claim 4, characterized in that, Both the second binding area and the first binding area are located on the side of the first touch partition of the touch electrode away from the non-touch display area. The lead wires of the touch signal units of the first electrode layer corresponding to the second touch partition are arranged around the frame of the touch electrode. The lead wires of the touch signal units of the second electrode layer corresponding to the second touch partition are arranged around the other frame of the touch electrode.

6. The metal mesh touchscreen according to claim 1, characterized in that, The touch signal unit of the first electrode layer includes at least one first signal channel and a plurality of second signal channels arranged along a first direction. The touch signal unit of the second electrode layer includes a plurality of third signal channels arranged along a second direction. The first signal channels are disposed in at least a portion of the non-touch display area. Each first signal channel is bent, and a portion of the first signal channel is arranged parallel to the third signal channel. The first direction is perpendicular to the second direction.

7. The metal mesh touchscreen according to claim 6, characterized in that, Each of the first signal channels is arranged in an L-shape.

8. The metal mesh touchscreen according to claim 6, characterized in that, The first signal channel has a first grid pattern, the second signal channel has a second grid pattern, and the third signal channel has a third grid pattern. The lines forming the second grid pattern and the lines forming the third grid pattern are staggered in the thickness direction of the light-transmitting insulating substrate.

9. The metal mesh touchscreen according to claim 8, characterized in that, There are no nodes between the first grid patterns of two adjacent first signal channels, no nodes between the second grid patterns of two adjacent second signal channels, and no nodes between the third grid patterns of two adjacent third signal channels. And / or, each line constituting the second grid pattern has an angle with each of the first direction and the second direction; each line constituting the third grid pattern has an angle with each of the first direction and the second direction.

10. A photomask for manufacturing a metal mesh touchscreen as described in any one of claims 1-9, characterized in that, The device includes a first photomask and a second photomask. The first photomask includes a first pattern area and a first peripheral area surrounding the first pattern area. The second photomask includes a second pattern area and a second peripheral area surrounding the second pattern area. The edge of the first pattern area forms a lead pattern extending to the first peripheral area. In the non-touch display area, at least a portion of the connection between the second pattern area and the second peripheral area is not provided with a lead pattern.

Images