Metal mesh, touch substrate and touch display apparatus

Abstract

Provided is a metal mesh, comprising, intersecting each other, a plurality of first wires and a plurality of second wires, wherein intersection points of the plurality of first wires and the plurality of second wires are arranged in an array, and any two adjacent first wires and any two adjacent second wires enclose a mesh. For any intersection point, a first adjacent intersection point adjacent to the intersection point is present on the first wire where the intersection point is located, a second adjacent intersection point adjacent to the intersection point is present on the second wire where the intersection point is located, and the distance from the intersection point to the first adjacent intersection point and the distance from the intersection point to the second adjacent intersection point are different from each other.

Description

Metal mesh, touch substrate and touch display device Technical Field

[0001] This invention relates to display technology, and more particularly to a metal mesh, a touch substrate, and a touch display device. Background Technology

[0002] Metal mesh touchpads are a common touch solution for add-on touch display devices. In touch display devices that include metal mesh touchpads, the touch layer is located on the display side of the display panel, and the touch layer includes at least one layer of metal mesh. With the development of display technology, the pixel density of display panels is getting higher and higher. When a high PPI display panel is paired with a metal mesh touchpad, moiré patterns are often generated due to the periodic interference between the metal mesh lines and the pixel units, which reduces the display quality. Summary of the Invention

[0003] On one hand, this disclosure provides a metal mesh, including multiple first traces and multiple second traces that intersect each other, wherein the intersection points of the multiple first traces and the multiple second traces are arranged in an array, and any two adjacent first traces and any two adjacent second traces form a mesh. For any intersection point, there is a first adjacent intersection point on the first trace where the intersection point is located, and there is a second adjacent intersection point on the second trace where the intersection point is located. The distances from the intersection point to the first adjacent intersection point and the distances from the intersection point to the second adjacent intersection point are different from each other.

[0004] Optionally, the intersection includes: a main body; a first extension and a third extension located on the first routing line and extending away from the main body from two opposite corners; and a second extension and a fourth extension located on the second routing line and extending away from the main body from two other opposite corners, wherein the first extension, the second extension, the third extension and the fourth extension are arranged sequentially around the main body.

[0005] Optionally, the main body is a square-like portion with its sides concave towards the center of the square-like portion, the center line of the first extension portion coincides with the center line of the third extension portion, and the center line of the second extension portion coincides with the center line of the fourth extension portion.

[0006] Optionally, the center lines of the first extension and the third extension are perpendicular to the center lines of the second extension and the fourth extension.

[0007] Optionally, the first extension, the second extension, the third extension, and the fourth extension are respectively connected to a connecting line, the connecting line including a first straight segment LS1 and a second straight segment connected together, the first extension, the second extension, the third extension, and the fourth extension are respectively connected to the corresponding second straight segment, and the first straight segment LS1 is located on the side of the second straight segment away from the intersection point.

[0008] Optionally, the first extension, the second extension, the third extension, and the fourth extension each form a first angle with the corresponding second straight line segment, and each first angle is equal to the others, and the first angle is in the range of 135° to 180°.

[0009] Optionally, the second straight segment corresponding to the first extension bends toward the direction of the second extension relative to the first extension; the second straight segment corresponding to the second extension bends toward the direction of the first extension relative to the second extension; the second straight segment corresponding to the third extension bends toward the direction of the fourth extension relative to the third extension; and the second straight segment corresponding to the fourth extension bends toward the direction of the third extension relative to the fourth extension.

[0010] Optionally, each of the second straight segments corresponding to the first extension, the second extension, the third extension, and the fourth extension has a different length.

[0011] Optionally, the first straight segment LS1 forms a second angle with the second straight segment. For the first extension, the second extension, the third extension, and the fourth extension, the second angles are not equal to each other, and the second angles are in the range of 135° to 180°.

[0012] Optionally, the extension directions of the two first straight line segments corresponding to the first extension and the third extension are not parallel, and / or the extension directions of the two first straight line segments corresponding to the second extension and the fourth extension are not parallel.

[0013] Optionally, the first extension, the second extension, the third extension, and the fourth extension are congruent straight line segments.

[0014] Optionally, in their respective extending directions away from the main body, the widths of the first extension, the second extension, the third extension, and the fourth extension first decrease and then increase, such that the first extension, the second extension, the third extension, and the fourth extension all have concave edges.

[0015] Optionally, the main body is a rectangular shape, with its long and short sides concave towards the center of the rectangular shape, and the widths of the first extension, the second extension, the third extension, and the fourth extension first decrease and then increase in their respective extending directions away from the main body, such that the first extension, the second extension, the third extension, and the fourth extension all have concave edges.

[0016] Optionally, intersections in the same row are not collinear, and / or intersections in the same column are not collinear.

[0017] Optionally, the grid formed by any two adjacent first lines and any two adjacent second lines is a quadrilateral, which includes four intersection points; on the same first line, the straight-line distance between any two adjacent intersection points is different; and / or on the same second line, the straight-line distance between any two adjacent intersection points is different.

[0018] Optionally, the plurality of first lines correspond to a plurality of parallel first virtual lines, and the plurality of second lines correspond to a plurality of parallel second virtual lines. The plurality of first virtual lines and the plurality of second virtual lines intersect each other to form a plurality of virtual intersection points. Any two adjacent first virtual lines and any two adjacent second virtual lines form a virtual grid. All virtual grids are congruent rhombuses or squares. The grids correspond one-to-one with the virtual grids, and the intersection points correspond one-to-one with the virtual intersection points. Any intersection point is located within a selected area centered on the corresponding virtual intersection point. The ratio of the area of ​​the selected area to the area of ​​the virtual grid is in the range of 0.01:1 to 0.08:1.

[0019] Optionally, the length of the common perpendicular segment between two opposite edges of the virtual mesh is S, and the angle of the vertex angle opposite to the common perpendicular segment is A, wherein the value of S ranges from 100μm to 500μm, and A is greater than or equal to 30° and less than 90°.

[0020] Optionally, the selection area is a rectangle, the length and width of which are parallel to the two diagonals of the virtual grid. The dimension of the rectangle along the first direction is 2K*S / (Sin(A / 2)), and the dimension of the rectangle along the second direction is 2K*S / (Cos(A / 2)). The first direction is parallel to one diagonal of the virtual grid, and the second direction is parallel to the other diagonal of the virtual grid. K is a constant whose value ranges from [0.08, 0.2].

[0021] Optionally, the selected area is a circle with a radius of K*S / (Sin(A / 2)) or K*S / (Cos(A / 2)), or 0.5*K*(S / Sin(A / 2)+S / Cos(A / 2)), where K is a constant with a value range of [0.08, 0.2]. Alternatively, the selected area is an ellipse with its major and minor axes parallel to the two diagonals of the virtual grid, the maximum dimension of the ellipse along the first direction being 2K*S / (Sin(A / 2)), and the maximum dimension of the ellipse along the second direction being 2K*S / (Cos(A / 2)), where the first direction is parallel to one diagonal of the virtual grid, the second direction is parallel to the other diagonal of the virtual grid, and K is a constant with a value range of [0.08, 0.2].

[0022] Optionally, the metal mesh comprises multiple miniature mesh repeating units stitched together, with the intersection points located at the edge regions of each miniature mesh repeating unit having the same offset relative to the corresponding virtual intersection point.

[0023] Optionally, the area ratio of any grid to the area of ​​the virtual grid is in the range of 0.6:1 to 1.4:1.

[0024] On the other hand, this disclosure provides a touch substrate including at least one layer of the aforementioned metal mesh.

[0025] Optionally, the angle between the first trace and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°, and the angle between the second trace and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°.

[0026] On the other hand, this disclosure provides a touch display device, including: a display panel; and the aforementioned touch substrate, wherein the touch substrate is stacked on the display side of the display panel.

[0027] Optionally, the first trace intersects with the data line or gate line in the display panel, and the angle between the first trace and the data line or gate line is greater than or equal to 20° and less than or equal to 80°. The second trace intersects with the data line or gate line, and the angle between the second trace and the data line or gate line is greater than or equal to 20° and less than or equal to 80°. Attached Figure Description

[0028] The following figures are merely illustrative examples based on various disclosed embodiments and are not intended to limit the scope of the invention.

[0029] Figure 1 is a plan view of a touch display device in the related technology.

[0030] Figure 2 shows the moiré pattern of a touch display device in the related art.

[0031] Figure 3 is a plan view of a metal mesh according to some embodiments of the present disclosure.

[0032] Figure 4A is an enlarged view of the area Z within the dashed box in Figure 3.

[0033] Figure 4B shows the various angles in the metal mesh shown in Figure 4A.

[0034] Figure 5 is a plan view of the mask used to prepare the metal mesh shown in Figure 3.

[0035] Figure 6A is an enlarged view of the area X within the dashed box in Figure 5.

[0036] Figure 6B shows the various angles in the mask shown in Figure 6A.

[0037] Figure 7 is a plan view illustrating a mask design method according to some embodiments of the present disclosure.

[0038] Figure 8A is a plan view illustrating a mask design method according to some embodiments of the present disclosure.

[0039] Figure 8B is a plan view illustrating a mask design method according to some embodiments of the present disclosure.

[0040] Figure 9 is a plan view of a mask according to some embodiments of the present disclosure.

[0041] Figure 10A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure.

[0042] Figure 10B is a schematic diagram of a mask used to prepare the metal mesh shown in Figure 10A.

[0043] Figure 11A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure.

[0044] Figure 11B is a schematic diagram of the mask used to prepare the metal mesh shown in Figure 11A.

[0045] Figure 12A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure.

[0046] Figure 12B is a schematic diagram of a mask used to prepare the metal mesh shown in Figure 12A.

[0047] Figure 13A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure.

[0048] Figure 13B is a schematic diagram of a mask used to prepare the metal mesh shown in Figure 13A.

[0049] Figure 14 is a schematic diagram illustrating a touch substrate according to some embodiments of the present disclosure.

[0050] Figure 15 is a schematic diagram illustrating a touch display device according to some embodiments of the present disclosure. Detailed Implementation

[0051] This disclosure will now be described in more detail with reference to the following embodiments. It should be noted that the following description of some embodiments presented herein is for illustrative and descriptive purposes only. It is not exhaustive or limited to the precise forms disclosed.

[0052] Figure 1 is a plan view of a touch display device in the related art. As shown in Figure 1, the touch display device includes a display panel and a touch substrate stacked on the display side of the display panel. The display panel includes a plurality of pixels, each pixel including a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. In some embodiments, the display panel is an OLED display panel. In some embodiments, the display panel is a liquid crystal display panel. In some embodiments, the display panel is a micro-LED display panel. In some embodiments, the display panel is a liquid crystal display panel. The touch substrate includes a metal mesh, which includes a plurality of first traces L1 and a plurality of second traces L2 intersecting each other, wherein the intersection points O of the plurality of first traces L1 and the plurality of second traces L2 are arranged in an array.

[0053] In related technologies, when the period of the pixel units in the display panel is close to the period of the metal grid in the touch substrate, moiré patterns are often generated due to periodic interference between the metal grid lines and the pixel units, which degrades the display quality. Figure 2 shows the moiré pattern of a touch display device in related technologies. As shown in Figure 2, moiré patterns include various forms such as vertical lines, diagonal lines, and dotted array patterns.

[0054] Therefore, this disclosure provides a metal mesh, a touch substrate, and a touch display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the prior art. In one aspect, this disclosure provides a metal mesh comprising a plurality of intersecting first traces and a plurality of intersecting second traces, wherein the intersections of the plurality of first traces and the plurality of second traces are arranged in an array, any two adjacent first traces and any two adjacent second traces form a mesh, and for any intersection, there exists a first adjacent intersection on the first trace where the intersection is located, and a second adjacent intersection on the second trace where the intersection is located, wherein the distances from the intersection to the first adjacent intersection and the distances from the intersection to the second adjacent intersection are different from each other.

[0055] Figure 3 is a plan view of a metal mesh according to some embodiments of the present disclosure. As shown in Figure 3, the metal mesh includes multiple first traces L1 and multiple second traces L2 that intersect each other, wherein the intersection points O of the multiple first traces L1 and the multiple second traces L2 are arranged in an array. Any two adjacent first traces L1 and any two adjacent second traces L2 form a mesh.

[0056] In some embodiments, as shown in FIG3, for any intersection point O, there is a first adjacent intersection point AO1 on the first routing line L1 where the intersection point O is located, and there is a second adjacent intersection point AO2 on the second routing line L2 where the intersection point O is located. The distances from the intersection point O to the first adjacent intersection point AO1 and the distances from the intersection point O to the second adjacent intersection point AO2 are different from each other.

[0057] Figure 3 shows two first adjacent intersection points AO1 corresponding to intersection point O. The distances from these two first adjacent intersection points AO1 to intersection point O are different. Both of these first adjacent intersection points AO1 and intersection point O are located on the first routing line L1 where intersection point O is located. Figure 3 also shows two second adjacent intersection points AO2 corresponding to intersection point O. The distances from these two second adjacent intersection points AO2 to intersection point O are different. Both of these second adjacent intersection points AO2 and intersection point O are located on the second routing line L2 where intersection point O is located.

[0058] In some embodiments, for any intersection point O, the distances from all intersection points adjacent to that intersection point O to that intersection point O are different from each other.

[0059] In some embodiments, the grid formed by any two adjacent first routing lines L1 and any two adjacent second routing lines L2 is a quadrilateral, which includes four intersection points O. In some embodiments, on the same first routing line L1, the straight-line distance between any two adjacent intersection points O is not the same; and / or on the same second routing line L2, the straight-line distance between any two adjacent intersection points O is not the same.

[0060] Based on the above design, in the metal mesh according to this disclosure, intersection points O located in the same row are not collinear. And / or, in the metal mesh according to this disclosure, intersection points O located in the same column are not collinear. The terms "same row" and / or "same column" mentioned above are relative to the array of intersection points O. Virtual intersection points O' corresponding to intersection points O in the same row are located on the same straight line; virtual intersection points O' corresponding to intersection points O in the same column are located on the same straight line. The virtual intersection points O' will be described in detail later.

[0061] Figure 4A is an enlarged view of the area Z within the dashed box in Figure 3. As shown in Figure 4A, in some embodiments, the intersection includes the main body MB, a first extension EP1, a second extension EP2, a third extension EP3, and a fourth extension EP4, wherein the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are arranged sequentially around the main body MB. The first extension EP1 and the third extension EP3 are located on the first trace L1 and extend away from the main body MB from two opposite corners. The second extension EP2 and the fourth extension EP4 are located on the second trace L2 and extend away from the main body MB from the other two opposite corners.

[0062] As shown in Figure 4A, in some embodiments, the main body MB is a near-square shape with its sides concave towards the center. The center line CL1 of the first extension EP1 coincides with the center line CL3 of the third extension EP3, and the center line CL2 of the second extension EP2 coincides with the center line CL4 of the fourth extension EP4. The center lines CL1 / CL3 of the first extension EP1 and the third extension EP3 are perpendicular to the center lines CL2 / CL4 of the second extension EP2 and the fourth extension EP4.

[0063] In some embodiments, the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are congruent straight line segments. That is, the lengths d1, d2, d3, and d4 of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 in the direction away from the main body MB are all equal, and the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 have the same width in the direction perpendicular to the direction away from the main body MB.

[0064] In some embodiments, as shown in FIG4A, the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are respectively connected to the connecting line. The connecting line includes a first straight segment LS1 and a second straight segment LS2 connected together. The first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are respectively connected to the corresponding second straight segment LS2. The first straight segment LS1 is located on the side of the second straight segment LS2 away from the intersection point O.

[0065] In some embodiments, as shown in FIG4A, the second straight segment LS2 corresponding to the first extension EP1 bends toward the second extension EP2 relative to the first extension EP1; the second straight segment LS2 corresponding to the second extension EP2 bends toward the first extension EP1 relative to the second extension EP2; the second straight segment LS2 corresponding to the third extension EP3 bends toward the fourth extension EP4 relative to the third extension EP3; and the second straight segment LS2 corresponding to the fourth extension EP4 bends toward the third extension EP3 relative to the fourth extension EP4.

[0066] In some embodiments, as shown in FIG4A, each of the second straight segments LS2 corresponding to the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 has a different length. As shown in FIG4A, the lengths c1, c2, c1, c2, and c2 of the second straight segment LS2 corresponding to the first extension EP1, the second straight segment LS2 corresponding to the second extension EP2, the third extension EP3, and the fourth extension EP4 are not equal.

[0067] In Figure 4A, the boundary lines between the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 and the main body MB are shown by dashed lines, such as dashed line BL1. In Figure 4A, the boundary lines between the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 and the corresponding second straight line segment LS2 are shown by dashed lines, such as dashed line BL2. In Figure 4A, the boundary line between the first straight line segment LS1 and the second straight line segment LS2 is shown by dashed lines, such as dashed line BL3.

[0068] Figure 4B illustrates the various angles in the metal mesh shown in Figure 4A. As shown in Figure 4B, in some embodiments, the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 form first angles α1, α2, α3, and α4 with their corresponding second straight line segments LS2, respectively. That is, the angle between the centerline of the first extension EP1 and the centerline of the corresponding second straight line segment LS2 is the first angle α1; the angle between the centerline of the second extension EP2 and the centerline of the corresponding second straight line segment LS2 is the first angle α2; the angle between the centerline of the third extension EP3 and the centerline of the corresponding second straight line segment LS2 is the first angle α3; and the angle between the centerline of the fourth extension EP4 and the centerline of the corresponding second straight line segment LS2 is the first angle α4. In some embodiments, the first angles α1, α2, α3, and α4 are equal to each other.

[0069] In some embodiments, the first angles α1, α2, α3, and α4 are in the range of 135° to 180°. For example, the first angles α1, α2, α3, and α4 are 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, or 180°.

[0070] As shown in Figure 4B, in some embodiments, the first straight line segment LS1 and the second straight line segment LS2 form a second angle β1, β2, β3, β4. That is, the angle between the center line of the first straight line segment LS1 corresponding to the first extension EP1 and the center line of the second straight line segment LS2 is the second angle β1; the angle between the center line of the first straight line segment LS1 corresponding to the second extension EP2 and the center line of the second straight line segment LS2 is the second angle β2; the angle between the center line of the first straight line segment LS1 corresponding to the third extension EP3 and the center line of the second straight line segment LS2 is the second angle β3; and the angle between the center line of the first straight line segment LS1 corresponding to the fourth extension EP4 and the center line of the second straight line segment LS2 is the second angle β4. For the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4, the respective second angles β1, β2, β3, and β4 are not equal to each other.

[0071] In some embodiments, the second angle β is in the range of 135° to 180°. For example, the second angles β1, β2, β3, and β4 are 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, or 180°.

[0072] As shown in Figure 4B, in some embodiments, the extension directions of the two first straight line segments LS1 corresponding to the first extension EP1 and the third extension EP3 are not parallel. Similarly, the extension directions of the two first straight line segments LS1 corresponding to the second extension EP2 and the fourth extension EP4 are not parallel.

[0073] Figure 5 is a schematic diagram of a mask used to fabricate the metal mesh shown in Figure 3. As shown in Figure 5, the mask includes multiple intersecting first traces L1 and multiple second traces L2, wherein nodes N of the multiple first traces L1 and multiple second traces L2 are arranged in an array. In some embodiments, as shown in Figure 3, for any node N, there is a first adjacent node AN1 on the first trace L1 where node N is located, and a second adjacent node AN2 on the second trace L2 where node N is located, and the distances from node N to the first adjacent node AN1 and the distances from node N to the second adjacent node AN2 are different from each other.

[0074] Figure 5 shows two first adjacent nodes AN1 corresponding to node N, and the distances from these two first adjacent nodes AN1 to node N are different. Figure 5 also shows two second adjacent nodes AN2 corresponding to node N, and the distances from these two second adjacent nodes AN2 to node N are different.

[0075] In some embodiments, for any node N, the distances from all nodes adjacent to node N to node N are different from each other.

[0076] Based on the above design, in the mask for manufacturing metal mesh according to this disclosure, nodes N located in the same row are not collinear. Based on the above design, in the mask for manufacturing metal mesh according to this disclosure, nodes N located in the same column are not collinear.

[0077] Figure 6A is an enlarged view of the area X within the dashed box in Figure 5. As shown in Figure 6A, in some embodiments, the node includes a main body MB', a first extension EP1', a second extension EP2', a third extension EP3', and a fourth extension EP4', wherein the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are arranged sequentially around the main body MB'. The first extension EP1' and the third extension EP3' are located on the first trace L1 and extend away from the main body MB' from two opposite corners. The second extension EP2' and the fourth extension EP4' are located on the second trace L2 and extend away from the main body MB' from the other two opposite corners.

[0078] As shown in Figure 6A, in some embodiments, the main body MB' is square. The center line CL1' of the first extension EP1' coincides with the center line CL3' of the third extension EP3', and the center line CL2' of the second extension EP2' coincides with the center line CL4' of the fourth extension EP4'. The center lines CL1' / CL3' of the first extension EP1' and the third extension EP3' are perpendicular to the center lines CL2' / CL4' of the second extension EP2' and the fourth extension EP4'.

[0079] In some embodiments, the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are congruent straight line segments. That is, the lengths d of the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' in the direction away from the main body MB' are all equal, and the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' have the same width in the direction perpendicular to the direction away from the main body MB'.

[0080] In some embodiments, as shown in FIG6A, the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are respectively connected to the connecting line. The connecting line includes a first straight segment LS1' and a second straight segment LS2' connected together. The first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are respectively connected to the corresponding second straight segment LS2'. The first straight segment LS1' is located on the side of the second straight segment LS2' away from the node.

[0081] In some embodiments, as shown in FIG6A, the second straight segment LS2' corresponding to the first extension EP1' bends toward the second extension EP2' relative to the first extension EP1'; the second straight segment LS2' corresponding to the second extension EP2' bends toward the first extension EP1' relative to the second extension EP2'; the second straight segment LS2' corresponding to the third extension EP3' bends toward the fourth extension EP4' relative to the third extension EP3'; and the second straight segment LS2' corresponding to the fourth extension EP4' bends toward the third extension EP3' relative to the fourth extension EP4'.

[0082] In some embodiments, as shown in FIG4A, each of the second straight segments LS2' corresponding to the first extension EP1', the second extension EP2', the third extension EP3' and the fourth extension EP4' has a different length.

[0083] In Figure 6A, the boundary lines between the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' and the main body MB' are shown by dashed lines, such as dashed line BL1'. In Figure 6A, the boundary lines between the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' and the corresponding second straight line segment LS2' are shown by dashed lines, such as dashed line BL2'. In Figure 6A, the boundary line between the first straight line segment LS1' and the second straight line segment LS2' is shown by dashed lines, such as dashed line BL3'.

[0084] Figure 6B illustrates the various angles in the mask shown in Figure 6A. As shown in Figure 6B, in some embodiments, the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' form third angles α1', α2', α3', and α4' with the corresponding second straight line segment LS2', respectively. That is, the angle between the centerline of the first extension EP1' and the centerline of the corresponding second straight line segment LS2' is the third angle α1'; the angle between the centerline of the second extension EP2' and the centerline of the corresponding second straight line segment LS2' is the third angle α2'; the angle between the centerline of the third extension EP3' and the centerline of the corresponding second straight line segment LS2' is the third angle α3'; and the angle between the centerline of the fourth extension EP4' and the centerline of the corresponding second straight line segment LS2' is the third angle α4'. In some embodiments, the respective third angles α1', α2', α3', and α4' are equal to each other and equal to the respective first angles α1, α2, α3, and α4.

[0085] In some embodiments, the third angles α1', α2', α3', and α4' are in the range of 135° to 180°. For example, the third angles α1', α2', α3', and α4' are 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, or 180°.

[0086] As shown in Figure 6B, in some embodiments, the first straight line segment LS1' and the second straight line segment LS2' form a fourth angle β1', β2', β3', β4'. That is, the angle between the center line of the first straight line segment LS1' corresponding to the first extension EP1' and the center line of the second straight line segment LS2' is the fourth angle β1; the angle between the center line of the first straight line segment LS1' corresponding to the second extension EP2' and the center line of the second straight line segment LS2' is the second angle β2'; the angle between the center line of the first straight line segment LS1' corresponding to the third extension EP3' and the center line of the second straight line segment LS2' is the second angle β3'; and the angle between the center line of the first straight line segment LS1' corresponding to the fourth extension EP4' and the center line of the second straight line segment LS2' is the second angle β4'. For the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4', the respective fourth angles β1', β2', β3', and β4' are not equal to each other.

[0087] In some embodiments, the fourth angles β1', β2', β3', and β4' are in the range of 135° to 180°. For example, the fourth angles β1', β2', β3', and β4' are 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, or 180°.

[0088] In some embodiments, the second angle β1 corresponding to the first extension EP1 is equal to the fourth angle β1' corresponding to the first extension EP1'; the second angle β2 corresponding to the second extension EP2 is equal to the fourth angle β2' corresponding to the second extension EP2'; the second angle β3 corresponding to the third extension EP3 is equal to the fourth angle β3' corresponding to the third extension EP3'; and the second angle β4 corresponding to the fourth extension EP4 is equal to the fourth angle β4' corresponding to the fourth extension EP4'.

[0089] As shown in Figure 6B, in some embodiments, the extension directions of the two first straight line segments LS1' corresponding to the first extension EP1' and the third extension EP3' are not parallel. The extension directions of the two first straight line segments LS1' corresponding to the second extension EP2' and the fourth extension EP4' are also not parallel.

[0090] When fabricating the metal meshes shown in Figures 3 and 4A, 4B, the masks shown in Figures 5 and 6A, 6B are required. The fabrication process involves: first, forming a full-length metal film on a substrate; then, coating the metal film with photoresist; next, exposing the photoresist using the masks shown in Figures 5 and 6A, 6B, followed by developing the exposed photoresist to form a photoresist pattern; then, etching the exposed metal film using the photoresist pattern as a mask to form the metal meshes shown in Figures 3 and 4A, 4B; finally, stripping the photoresist pattern.

[0091] Due to the photolithography process, the shape of intersection O is not completely consistent with the shape of node N; the shape of the first extension EP1 is not completely consistent with the shape of the first extension EP1'; the shape of the second extension EP2 is not completely consistent with the shape of the second extension EP2'; the shape of the third extension EP3 is not completely consistent with the shape of the third extension EP3'; and the shape of the fourth extension EP4 is not completely consistent with the shape of the fourth extension EP4'.

[0092] According to the above preparation method, multiple first traces L1 of the metal mesh correspond one-to-one with multiple first traces L1' of the mask, and the center lines of the corresponding first traces L1 and L1' coincide with each other; multiple second traces L2 of the metal mesh correspond one-to-one with multiple second traces L2' of the mask, and the center lines of the corresponding second traces L2 and L2' coincide with each other; multiple intersections O of the metal mesh correspond one-to-one with multiple nodes N of the mask, and the positions of the corresponding intersections O and nodes N overlap with each other.

[0093] The design method of the mask shown in Figures 5, 6A, and 6B is explained below.

[0094] Figure 7 is a plan view illustrating a mask design method according to some embodiments of the present disclosure. As shown in Figure 7, when setting the mask, firstly, multiple first virtual lines L1' corresponding to multiple first traces L1' and multiple second virtual lines L2' corresponding to multiple second traces L2' are selected. It should be noted that since the multiple first traces L1 of the metal mesh correspond one-to-one with the multiple first traces L1' of the mask, and the multiple second traces L2 of the metal mesh correspond one-to-one with the multiple second traces L2' of the mask, therefore, the multiple first virtual lines L1' also correspond one-to-one with the multiple first traces L1 of the metal mesh, and the multiple second virtual lines L2' also correspond one-to-one with the multiple second traces L2 of the metal mesh.

[0095] As shown in Figure 7, multiple first virtual lines L1' and multiple second virtual lines L2' intersect each other, forming multiple virtual intersection points O'. Any two adjacent first virtual lines L1' and any two adjacent second virtual lines L2' form a virtual grid, and all virtual grids are congruent rhombuses or squares.

[0096] As shown in Figure 7, the length of the common perpendicular segment between two opposite edges of the virtual mesh is S, and the angle of the vertex angle opposite the common perpendicular segment is A. The value of S ranges from 100μm to 500μm, and A is greater than or equal to 30° and less than 90°. For example, S can be 100μm, 200μm, 300μm, 400μm, or 500μm. Similarly, A can be 30°, 40°, 50°, 60°, 70°, 80°, or 85°.

[0097] The selection of multiple parallel first virtual lines L1' and multiple parallel second virtual lines L2' is based on the assumption that the first virtual lines L1' and second virtual lines L2' are the first traces L1 and second traces L2 of the actual metal mesh, and that the moiré pattern generated when the metal mesh is superimposed on the display panel is minimal. The degree of moiré pattern minimization can be calculated through computer simulation. For example, the degree of moiré pattern minimization can be adjusted by adjusting the length S and angle A of the aforementioned common perpendicular line segment.

[0098] Next, based on the position of the virtual intersection point O', the position of the mask node N can be designed, thereby determining the position of the metal mesh intersection point O. The principle for designing the position of the mask node N is that any node N is located within the selection region SR centered on its corresponding virtual intersection point O'. For example, using the virtual intersection point O' as a reference, the position coordinates of the virtual intersection point O' are randomly offset within the selection region SR to obtain the position coordinates of node N, which is also the position coordinates of intersection point O. Therefore, multiple virtual intersection points O' correspond one-to-one with multiple intersection points O in the metal mesh.

[0099] In some embodiments, the ratio of the area of ​​the selected region SR to the area of ​​the virtual mesh is in the range of 0.01:1 to 0.08:1, for example, 0.01:1, 0.02:1, 0.03:1, 0.04:1, 0.05:1, 0.06:1, 0.07:1, or 0.08:1.

[0100] In the embodiment shown in Figure 7, the selected region SR is a rectangle, with its length and width parallel to the two diagonals of the virtual mesh, respectively. In some embodiments, the dimension of the rectangle along the first direction DR1 is 2K*S / (Sin(A / 2)), and the dimension of the rectangle along the second direction DR2 is 2K*S / (Cos(A / 2)), where the first direction DR1 is parallel to one diagonal of the virtual mesh, the second direction DR1 is parallel to the other diagonal of the virtual mesh, and K is a constant whose value ranges from [0.08, 0.2]. For example, the value of K can be 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, or 0.2.

[0101] As shown in Figure 7, multiple virtual intersection points O' are arranged in an array. Therefore, multiple intersection points O in the metal mesh are also arranged in an array. For example, in Figure 7, virtual intersection points O' in the same row are arranged along the first direction DR1, and virtual intersection points O' in the same column are arranged along the second direction DR2. Virtual intersection points O' in the same row correspond to intersection points O in the same row; virtual intersection points O' in the same column correspond to intersection points O in the same column. Because the nodes N of the mask are offset relative to the virtual intersection points O', intersection points O in the same row are not collinear; and / or, intersection points O in the same column are not collinear.

[0102] Figure 8A is a plan view illustrating a mask design method according to some embodiments of the present disclosure. As shown in Figure 8A, the selected region SR is a circle with a radius of K*S / (Sin(A / 2)) or K*S / (Cos(A / 2)), or 0.5*K*(S / Sin(A / 2)+S / Cos(A / 2)), where K is a constant and its value ranges from [0.08, 0.2]. For example, the value of K is 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, or 0.2.

[0103] As shown in Figure 8A, multiple virtual intersection points O' are arranged in an array. Therefore, multiple intersection points O in the metal mesh are also arranged in an array. For example, in Figure 8A, virtual intersection points O' in the same row are arranged along the first direction DR1, and virtual intersection points O' in the same column are arranged along the second direction DR2. Virtual intersection points O' in the same row correspond to intersection points O in the same row; virtual intersection points O' in the same column correspond to intersection points O in the same column. Because the nodes N of the mask are offset relative to the virtual intersection points O', intersection points O in the same row are not collinear; and / or, intersection points O in the same column are not collinear.

[0104] Figure 8B is a plan view illustrating a mask design method according to some embodiments of the present disclosure. As shown in Figure 8B, the selected region SR is elliptical, with its major and minor axes parallel to the two diagonals of the virtual mesh. In the embodiment shown in Figure 8B, the maximum dimension of the ellipse along the first direction DR1 is 2K*S / (Sin(A / 2)), and the maximum dimension of the ellipse along the second direction DR2 is 2K*S / (Cos(A / 2)), where the first direction DR1 is parallel to one diagonal of the virtual mesh, the second direction DR2 is parallel to the other diagonal of the virtual mesh, and K is a constant whose value ranges from [0.08, 0.2]. For example, the value of K is 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, or 0.2.

[0105] As shown in Figure 8B, multiple virtual intersection points O' are arranged in an array. Therefore, multiple intersection points O in the metal mesh are also arranged in an array. For example, in Figure 8B, virtual intersection points O' in the same row are arranged along the first direction DR1, and virtual intersection points O' in the same column are arranged along the second direction DR2. Virtual intersection points O' in the same row correspond to intersection points O in the same row; virtual intersection points O' in the same column correspond to intersection points O in the same column. Because the nodes N of the mask are offset relative to the virtual intersection points O', intersection points O in the same row are not collinear; and / or, intersection points O in the same column are not collinear.

[0106] According to the above design method, the ratio of the area of ​​the final arbitrary mesh to the area of ​​the virtual mesh is in the range of 0.6:1 to 1.4:1, for example 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, or 1.4:1.

[0107] When designing a mask, the above calculations can be performed on each node. However, such calculations involve a very large amount of data and place high demands on computing resources.

[0108] Figure 9 is a plan view of a mask according to some embodiments of the present disclosure. To address the data volume issue, as shown in Figure 9, in some embodiments, the mask can be designed to include multiple minimal repeating units RU stitched together. In this case, it is necessary to ensure that nodes N located in the edge regions of each minimal repeating unit RU have the same offset relative to the corresponding virtual intersection point O', so that any two adjacent minimal repeating units RU can be seamlessly stitched together.

[0109] Thus, the final metal mesh will be formed as follows: it consists of multiple miniature repeating mesh units spliced ​​together, with the intersection point O located at the edge region of each miniature repeating mesh unit having the same offset relative to the corresponding virtual intersection point O'.

[0110] Figure 10A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure. As shown in Figure 10A, in some embodiments, each intersection of the metal mesh includes a main body MB, a first extension EP1, a second extension EP2, a third extension EP3, and a fourth extension EP4, wherein the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are arranged sequentially around the main body MB. The main body MB is a rectangular prism, with its long and short sides concave towards the center of the prism. In their respective extension directions away from the main body MB, the widths of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 first decrease and then increase, such that each of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 has a concave edge.

[0111] Figure 10B is a schematic diagram of a mask used to fabricate the metal mesh shown in Figure 10A. As shown in Figure 10B, in some embodiments, the nodes of the mask include a main body MB', a first extension EP1', a second extension EP2', a third extension EP3', and a fourth extension EP4', wherein the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are arranged sequentially around the main body MB'. As shown in Figure 10B, the main body MB', the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are formed in an "H" shape.

[0112] Figure 11A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure. As shown in Figure 11A, in some embodiments, each intersection of the metal mesh includes a main body MB, a first extension EP1, a second extension EP2, a third extension EP3, and a fourth extension EP4, wherein the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are arranged sequentially around the main body MB. The main body MB is approximately square, with the sides of the square recessed towards the center of the square. The widths of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are approximately equal.

[0113] Figure 11B is a schematic diagram of a mask used to fabricate the metal mesh shown in Figure 11A. As shown in Figure 11B, in some embodiments, the nodes of the mask include a main body MB', a first extension EP1', a second extension EP2', a third extension EP3', and a fourth extension EP4', wherein the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are arranged sequentially around the main body MB'. As shown in Figure 10B, a flat cut is formed between the first extension EP1' and the second extension EP2', and a flat cut is formed between the third extension EP3' and the fourth extension EP4'.

[0114] Figure 12A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure. As shown in Figure 12A, in some embodiments, each intersection of the metal mesh includes a main body MB, a first extension EP1, a second extension EP2, a third extension EP3, and a fourth extension EP4, wherein the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are arranged sequentially around the main body MB. The main body MB is a rectangular prism, with its long and short sides concave towards the center of the prism. In their respective extension directions away from the main body MB, the widths of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 first decrease and then increase, such that the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 have concave edges.

[0115] Figure 12B is a schematic diagram of a mask used to fabricate the metal mesh shown in Figure 12A. As shown in Figure 12B, in some embodiments, the nodes of the mask include a main body MB', a first extension EP1', a second extension EP2', a third extension EP3', and a fourth extension EP4', wherein the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are arranged sequentially around the main body MB'. As shown in Figure 10B, a triangular cut is formed between the first extension EP1' and the second extension EP2', and a triangular cut is formed between the third extension EP3' and the fourth extension EP4'.

[0116] Figure 13A is a schematic diagram of a metal mesh according to some embodiments of the present disclosure. As shown in Figure 13A, in some embodiments, each intersection of the metal mesh includes a main body MB, a first extension EP1, a second extension EP2, a third extension EP3, and a fourth extension EP4, wherein the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 are arranged sequentially around the main body MB. The main body MB is approximately square, with the edges of the approximately square recessed towards the center of the approximately square. In their respective extension directions away from the main body MB, the widths of the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 first decrease and then increase, such that the first extension EP1, the second extension EP2, the third extension EP3, and the fourth extension EP4 all have recessed edges.

[0117] Figure 13B is a schematic diagram of a mask used to fabricate the metal mesh shown in Figure 13A. As shown in Figure 13B, in some embodiments, each node of the mask includes a main body MB', a first extension EP1', a second extension EP2', a third extension EP3', and a fourth extension EP4', wherein the first extension EP1', the second extension EP2', the third extension EP3', and the fourth extension EP4' are arranged sequentially around the main body MB'. As shown in Figure 10B, the side of the first extension EP1' closest to the second extension EP2' is recessed towards the side of the first extension EP1' away from the second extension EP2', forming a recess; the side of the second extension EP2' closest to the third extension EP3' is recessed towards the side of the second extension EP2' away from the third extension EP3', forming a recess; the side of the third extension EP3' closest to the fourth extension EP4' is recessed towards the side of the third extension EP3' away from the fourth extension EP4', forming a recess; the side of the fourth extension EP4' closest to the first extension EP1' is recessed towards the side of the fourth extension EP4' away from the first extension EP1', forming a recess.

[0118] Figure 14 is a schematic diagram illustrating a touch substrate according to some embodiments of the present disclosure. As shown in Figure 14, in some embodiments, the touch substrate includes at least one layer of the aforementioned metal mesh. Figure 14 shows two layers of metal mesh, wherein the dark mesh and the light mesh are located in different layers. Taking the dark mesh as an example, the angle θ1 between the first trace L1 and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°, and the angle θ2 between the second trace L2 and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°.

[0119] In some embodiments, for the same metal grid, the included angle θ1 between different first traces L1 and the edge of the touch substrate is different from each other; and / or, the included angle θ2 between different second traces L2 and the edge of the touch substrate is different from each other.

[0120] Figure 15 is a schematic diagram illustrating a touch display device according to some embodiments of the present disclosure. As shown in Figure 15, in some embodiments, the touch display device includes: a display panel; and the aforementioned touch substrate, wherein the touch substrate is stacked on the display side of the display panel. The display panel includes a plurality of mutually parallel data lines DL and a plurality of mutually parallel gate lines GL.

[0121] As shown in Figure 15, the first trace L1 intersects with the data line DL in the display panel. The angle φ1 between the first trace L1 and the data line DL is greater than or equal to 20° and less than or equal to 80°. The second trace L2 intersects with the data line DL. The angle φ2 between the second trace L2 and the data line DL is greater than or equal to 20° and less than or equal to 80°.

[0122] As shown in Figure 15, the first trace L1 intersects with the gate line GL in the display panel. The angle ψ1 between the first trace L1 and the gate line GL is greater than or equal to 20° and less than or equal to 80°. The second trace L2 intersects with the gate line GL. The angle ψ2 between the second trace L2 and the gate line GL is greater than or equal to 20° and less than or equal to 80°.

[0123] For illustrative and descriptive purposes, the foregoing description of embodiments of the invention has been provided. It is not exhaustive, nor is it intended to limit the invention to the precise forms or exemplary embodiments disclosed. Therefore, the foregoing description should be considered illustrative rather than restrictive. Clearly, many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to explain the principles of the invention and its best mode of practical application, thereby enabling those skilled in the art to understand the various embodiments of the invention and the various modifications suitable for the particular use or implementation contemplated. The scope of the invention is intended to be defined by the appended claims and their equivalents, wherein, unless otherwise stated, all terms are to be interpreted in their broadest reasonable sense. Therefore, the terms “the invention,” “the present invention,” etc., do not necessarily limit the scope of the claims to the specific embodiments, and references to exemplary embodiments of the invention do not imply limitation of the invention, nor should such limitation be inferred. The invention is defined only by the spirit and scope of the appended claims. Furthermore, these claims may involve the use of “first,” “second,” etc., followed by nouns or elements. These terms should be understood as nomenclature and should not be construed as limiting the number of elements modified by these nomenclatures unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It should be understood that changes to the described embodiments can be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims. Furthermore, the elements and components in this disclosure are not intended for public distribution, whether or not they are expressly recited in the appended claims.

Claims

1. A metal mesh comprising a plurality of first traces and a plurality of second traces intersecting each other, wherein, The intersections of the plurality of first traces and the plurality of second traces are arranged in an array. Any two adjacent first routes and any two adjacent second routes form a grid, and For any intersection point, there exists a first adjacent intersection point on the first path where the intersection point is located, and there exists a second adjacent intersection point on the second path where the intersection point is located. The distances from the intersection point to the first adjacent intersection point and the distances from the intersection point to the second adjacent intersection point are different from each other.

2. The metal mesh according to claim 1, wherein, The intersection points include: Main body; A first extension and a third extension, located on the first routing line, extend away from the main body from two opposite corners of the main body; and The second and fourth extensions are located on the second routing line and extend away from the main body from two other opposite corners of the main body. The first extension, the second extension, the third extension, and the fourth extension are arranged sequentially around the main body.

3. The metal mesh according to claim 2, wherein, The main body is a square-like portion with its sides concave towards the center. The center line of the first extension coincides with the center line of the third extension, and the center line of the second extension coincides with the center line of the fourth extension.

4. The metal mesh according to claim 3, wherein, The center lines of the first extension and the third extension are perpendicular to the center lines of the second extension and the fourth extension.

5. The metal mesh according to claim 3, wherein, The first extension, the second extension, the third extension, and the fourth extension are respectively connected to the connecting line. The connecting line includes a first straight segment and a second straight segment connected together. The first extension, the second extension, the third extension and the fourth extension are respectively connected to the corresponding second straight segment. The first straight segment is located on the side of the second straight segment away from the intersection point.

6. The metal mesh according to claim 5, wherein, The first extension, the second extension, the third extension, and the fourth extension each form a first angle with the corresponding second straight line segment, and each first angle is equal to the others and is in the range of 135° to 180°.

7. The metal mesh according to claim 6, wherein, The second straight segment corresponding to the first extension bends toward the direction of the second extension relative to the first extension. The second straight segment corresponding to the second extension bends toward the direction of the first extension relative to the second extension. The second straight segment corresponding to the third extension bends toward the fourth extension relative to the third extension. as well as The second straight segment corresponding to the fourth extension bends toward the third extension relative to the fourth extension.

8. The metal mesh according to claim 6, wherein, Each of the second straight segments corresponding to the first extension, the second extension, the third extension, and the fourth extension has a different length.

9. The metal mesh according to claim 5, wherein, The first straight segment and the second straight segment form a second angle. For the same intersection point, the second angles of the first extension, the second extension, the third extension and the fourth extension are not equal to each other, and the second angles are in the range of 135° to 180°.

10. The metal mesh according to claim 3, wherein, The extension directions of the two first straight line segments corresponding to the first extension and the third extension are not parallel, and / or the extension directions of the two first straight line segments corresponding to the second extension and the fourth extension are not parallel.

11. The metal mesh according to claim 3, wherein, The first extension, the second extension, the third extension, and the fourth extension are congruent straight line segments.

12. The metal mesh according to claim 3, wherein, In their respective extending directions away from the main body, the widths of the first extension, the second extension, the third extension, and the fourth extension first decrease and then increase, such that the first extension, the second extension, the third extension, and the fourth extension all have concave edges.

13. The metal mesh according to claim 2, wherein, The main body is rectangular in shape, with its long and short sides concave towards the center. In their respective extending directions away from the main body, the widths of the first extension, the second extension, the third extension, and the fourth extension first decrease and then increase, such that the first extension, the second extension, the third extension, and the fourth extension all have concave edges.

14. The metal mesh according to any one of claims 1 to 13, wherein, Intersections in the same row are not collinear, and / or intersections in the same column are not collinear.

15. The metal mesh according to any one of claims 1 to 13, wherein, The grid formed by any two adjacent first lines and any two adjacent second lines is a quadrilateral, and the quadrilateral includes four intersection points. On the same first line of travel, the straight-line distance between any two adjacent intersection points is not the same; and / or On the same second path, the straight-line distance between any two adjacent intersection points is not the same.

16. The metal mesh according to claim 1, wherein, The plurality of first routing lines correspond to a plurality of parallel first virtual lines, and the plurality of second routing lines correspond to a plurality of parallel second virtual lines. The plurality of first virtual lines and the plurality of second virtual lines intersect each other, forming a plurality of virtual intersection points. Any two adjacent first virtual lines and any two adjacent second virtual lines form a virtual grid, and all virtual grids are congruent rhombuses or squares. The grid corresponds one-to-one with the virtual grid, and the intersection point corresponds one-to-one with the virtual intersection point. Any intersection point is located within a selected area centered on the corresponding virtual intersection point, and the ratio of the area of ​​the selected area to the area of ​​the virtual grid is in the range of 0.01:1 to 0.08:

1.

17. The metal mesh according to claim 16, wherein, The length of the common perpendicular segment between two opposite edges of the virtual mesh is S, and the angle of the vertex angle opposite the common perpendicular segment is A. Wherein, the value of S ranges from 100μm to 500μm, and A is greater than or equal to 30° and less than 90°.

18. The metal mesh according to claim 17, wherein, The selected area is a rectangle, the length and width of which are parallel to the two diagonals of the virtual grid. The dimension of the rectangle along the first direction is 2K*S / (Sin(A / 2)), and the dimension of the rectangle along the second direction is 2K*S / (Cos(A / 2)). Wherein, the first direction is parallel to one diagonal of the virtual mesh, the second direction is parallel to the other diagonal of the virtual mesh, and K is a constant whose value ranges from [0.08, 0.2].

19. The metal mesh according to claim 18, wherein the selected area is circular, and the radius of the circle is K*S / (Sin(A / 2)) or K*S / (Cos(A / 2)), or 0.5*K*(S / Sin(A / 2)+S / Cos(A / 2)). in, K is a constant, and its value ranges from [0.08, 0.2], or The selected area is elliptical, with its major and minor axes parallel to the two diagonals of the virtual grid. The maximum dimension of the ellipse along the first direction is 2K*S / (Sin(A / 2)), and the maximum dimension of the ellipse along the second direction is 2K*S / (Cos(A / 2)). Wherein, the first direction is parallel to one diagonal of the virtual mesh, the second direction is parallel to the other diagonal of the virtual mesh, and K is a constant whose value ranges from [0.08, 0.2].

20. The metal mesh of claim 16, comprising a plurality of miniature mesh repeating units spliced ​​together, wherein the intersections of the edge regions of each miniature mesh repeating unit have the same offset relative to the corresponding virtual intersections.

21. The metal mesh according to claim 16, wherein, The ratio of the area of ​​any grid to the area of ​​the virtual grid is in the range of 0.6:1 to 1.4:

1.

22. A touch substrate comprising at least one layer of metal mesh according to any one of claims 1 to 21.

23. The touch substrate according to claim 22, wherein, The angle between the first trace and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°, and the angle between the second trace and the edge of the touch substrate is greater than or equal to 20° and less than or equal to 80°.

24. A touch display device, comprising: Display panel; and The touch substrate according to claim 22, The touch substrate is stacked on the display side of the display panel.

25. The touch display device according to claim 24, wherein, The first trace intersects with the data line or gate line in the display panel, and the angle between the first trace and the data line or gate line is greater than or equal to 20° and less than or equal to 80°. The second trace intersects with the data line or gate line, and the angle between the second trace and the data line or gate line is greater than or equal to 20° and less than or equal to 80°.

Images