A touch substrate and a touch display device

Abstract

The present invention discloses a touch control substrate and a touch control display device. At least one touch control signal line is designed as a first line of at least two short line structures, and two first lines are connected by connecting lines by opening holes in an insulating layer to form a complete touch control signal line. The design of the touch control signal line of the present invention can effectively reduce the static electricity accumulation capacity caused by the long line design of the touch control signal line in the manufacturing process, thereby preventing ESD from occurring and improving the yield of the product.

Description

Technical Field

[0001] The present invention relates to the field of touch display technology, and in particular to a touch substrate and a touch display device. Background Art

[0002] With the development of active-matrix organic light emitting diode (AMOLED) technology, the development of display devices has entered the era of full screen and narrow frame. In order to bring better user experience, full screen, narrow frame, high resolution, curling wearable, folding, etc. will become the important development direction of AMOLED in the future; in order to make the panel lighter and thinner to adapt to the future folding and curling products, flexible multi-layer structure (Flexible Multi-Layer On Cell, FMLOC) touch technology was born. With the development of the market, AMOLED technology has gradually been applied from small-sized electronic products to large-sized electronic products. The application of FMLOC in large-sized electronic products is also bound to be a future development trend. When FMLOC is applied to large-size electronic products, longer metal traces (touch signal lines) are often required to connect the touch electrodes inside the touch area with the peripheral driver chip (IC). Longer metal traces can easily cause a large amount of static electricity to accumulate and release, which leads to electrostatic discharge (ESD), thereby reducing the product yield. Therefore, if FMLOC is to be applied to large-size electronic products, the problem of ESD caused by long metal traces needs to be solved. Summary of the invention

[0003] A touch substrate and a touch display device provided by the embodiments of the present invention are used to reduce the static electricity accumulation capability of a touch signal line during a manufacturing process and improve the yield of a product.

[0004] An embodiment of the present invention provides a touch control substrate, including:

[0005] A base substrate, wherein the base substrate has a touch area and a non-touch area arranged around the touch area;

[0006] A touch electrode layer, located in the touch area of ​​the base substrate;

[0007] A plurality of touch signal lines are located in the non-touch area of ​​the base substrate, and the touch signal lines are electrically connected to the touch electrode layer; wherein at least one of the touch signal lines includes at least two first wiring lines located in the same layer and a first spacing area located between the two first wiring lines;

[0008] an insulating layer, wherein an orthographic projection of the insulating layer on the base substrate covers an orthographic projection of the first trace and the first spacing area on the base substrate;

[0009] A connecting line electrically connects first wirings located at two sides of the first spacing area through a first via hole penetrating the insulating layer.

[0010] Optionally, in the above touch control substrate provided by an embodiment of the present invention, the touch control area further includes a bridging layer located between the base substrate and the insulating layer, the touch control electrode layer is located on a side of the insulating layer away from the base substrate, and the bridging layer includes a plurality of bridging electrodes;

[0011] The touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes extending in different directions and insulated and cross-arranged; the first touch electrodes include a plurality of first touch electrode blocks, and the bridging electrodes electrically connect the first touch electrode blocks through second via holes penetrating the insulating layer.

[0012] Optionally, in the above touch control substrate provided by an embodiment of the present invention, the first wiring is disposed in the same layer as the bridge layer, and the connecting wire is disposed in the same layer as the touch control electrode layer.

[0013] Optionally, in the touch substrate provided by an embodiment of the present invention, the touch signal line further includes a second line arranged in the same layer as the touch electrode layer, the extension direction of the second line is the same as the extension direction of the first line, and the second line and the connecting line are an integrated structure.

[0014] Optionally, in the touch control substrate provided by an embodiment of the present invention, the connection line is disposed in the same layer as the bridge layer, and the first routing line is disposed in the same layer as the touch control electrode layer.

[0015] Optionally, in the touch substrate provided by an embodiment of the present invention, the touch signal line further includes a second line arranged in the same layer as the bridge layer, the extension direction of the second line is the same as the extension direction of the first line, and the second line and the connecting line are an integrated structure.

[0016] Optionally, in the above touch control substrate provided by an embodiment of the present invention, a width of an orthographic projection of the second wiring on the base substrate is substantially the same as a width of an orthographic projection of the first wiring on the base substrate.

[0017] Optionally, in the above-mentioned touch substrate provided in an embodiment of the present invention, at least one of the second routing lines includes at least two sub-routing lines and a second spacing area located between the two sub-routing lines; the sub-routing lines located on both sides of the second spacing area are electrically connected to the first routing line through a third via hole penetrating the insulating layer.

[0018] Optionally, in the touch substrate provided by an embodiment of the present invention, along the arrangement direction of the touch signal lines, the first spacing regions and the second spacing regions respectively located on two adjacent touch signal lines are staggered.

[0019] Optionally, in the above touch substrate provided by an embodiment of the present invention, along the extending direction of the touch signal line, the first spacing regions and the second spacing regions on the same touch signal line are alternately arranged.

[0020] Optionally, in the touch substrate provided by an embodiment of the present invention, along the arrangement direction of the touch signal lines, the first spacing regions and the second spacing regions on the touch signal lines are located in the same row and are alternately arranged.

[0021] Optionally, in the above-mentioned touch substrate provided by an embodiment of the present invention, along the arrangement direction of each touch signal line, the first spacing area on each touch signal line is located in the same row, the second spacing area on each touch signal line is located in the same row, and the first spacing area and the second spacing area are located in different rows.

[0022] Optionally, in the above-mentioned touch substrate provided by an embodiment of the present invention, along the arrangement direction of each of the touch signal lines, the first spacing areas on each of the touch signal lines located in odd columns are located in the same row, the second spacing areas on each of the touch signal lines located in odd columns are located in the same row, the first spacing areas on each of the touch signal lines located in even columns are located in the same row, the second spacing areas on each of the touch signal lines located in even columns are located in the same row, the first spacing areas on each of the touch signal lines located in odd columns and the first spacing areas on each of the touch signal lines located in even columns are located in different rows, and the second spacing areas on each of the touch signal lines located in odd columns and the second spacing areas on each of the touch signal lines located in even columns are located in different rows.

[0023] Optionally, in the above touch substrate provided by an embodiment of the present invention, orthographic projections of the first spacing area and the second spacing area on the same touch signal line on the base substrate do not overlap.

[0024] Optionally, in the touch substrate provided by an embodiment of the present invention, the first spacing area and the second spacing area have the same length along the extension direction of the touch signal line, and the distance between the first spacing area and the second spacing area on the same touch signal line is the same.

[0025] Optionally, in the touch substrate provided by an embodiment of the present invention, a minimum distance between the first via hole and adjacent edges of the first spacing region is less than 10 um, and a minimum distance between the third via hole and adjacent edges of the second spacing region is less than 10 um.

[0026] Correspondingly, an embodiment of the present invention further provides a touch display device, comprising any of the above-mentioned touch substrates.

[0027] The beneficial effects of the embodiments of the present invention are as follows:

[0028] The above-mentioned touch substrate and touch display device provided by the embodiments of the present invention form a complete touch signal line by designing at least one touch signal line as the first line of at least two short line structures, and connecting the two first lines through connecting lines by opening holes in the insulating layer. The design of the touch signal line of the present invention can effectively reduce the static electricity accumulation capacity caused by the long line design of the touch signal line during the manufacturing process, thereby preventing ESD from occurring and improving the yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the planar structure of a touch control substrate provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of another partial cross-sectional structure of a touch control substrate provided by an embodiment of the present invention;

[0037] Fig. 9 A schematic diagram of a planar structure of a touch signal line of a touch substrate provided by an embodiment of the present invention;

[0038] Fig.10 A schematic diagram of another planar structure of a touch signal line of a touch substrate provided by an embodiment of the present invention;

[0039] Fig.11A schematic diagram of another planar structure of a touch signal line of a touch substrate provided by an embodiment of the present invention;

[0040] Fig.12 This is a schematic diagram of the planar structure of a touch display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the touch substrate and the touch display device provided by the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The shapes and sizes of the components in the drawings do not reflect the actual proportions, and are only intended to illustrate the contents of the present invention.

[0043] An embodiment of the present invention provides a touch control substrate, such as Figure 1-Figure 3 As shown, Figure 1 is a schematic plan view of a touch substrate. Figure 2 and Figure 3 The two cross-sectional schematic diagrams along the CC' direction in the figure, the touch substrate includes:

[0044] A base substrate 1, wherein the base substrate 1 has a touch area AA and a non-touch area BB arranged around the touch area AA;

[0045] A touch electrode layer 2 is located in the touch area AA of the base substrate 1;

[0046] A plurality of touch signal lines 3 are located in the non-touch area BB of the substrate 1, and the touch signal lines 3 are electrically connected to the touch electrode layer 2; wherein at least one touch signal line 3 includes at least two first traces ( Figure 2 Taking two first traces 31 and 32 as an example) and a first spacing area 33 located between the two first traces (31 and 32);

[0047] An insulating layer 4, wherein the orthographic projection of the insulating layer 4 on the base substrate 1 covers the orthographic projection of the first trace (31 and 32) and the first spacing area 33 on the base substrate 1;

[0048] The connecting wire 5 electrically connects the first wirings ( 31 and 32 ) located on both sides of the first spacing area 33 through a first via hole 41 penetrating the insulating layer 4 .

[0049] The above-mentioned touch substrate provided by the embodiment of the present invention forms a complete touch signal line by designing at least one touch signal line as the first line of at least two short line structures, and connecting the two first lines through connecting lines by opening holes in the insulating layer. The design of the touch signal line of the present invention can effectively reduce the static electricity accumulation capacity caused by the long line design of the touch signal line during the manufacturing process, thereby preventing ESD from occurring and improving the yield of the product.

[0050] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 4 As shown, Figure 4 for Figure 1 In the cross-sectional schematic diagram along the DD' direction, the touch area AA further includes a bridge layer 6 located between the base substrate 1 and the insulating layer 4, the touch electrode layer 2 is located on a side of the insulating layer 4 away from the base substrate 1, and the bridge layer 6 includes a plurality of bridge electrodes 61;

[0051] like Figure 1 As shown, the touch electrode layer 2 includes a plurality of first touch electrodes 21 and a plurality of second touch electrodes 22 extending in different directions and being insulated and cross-arranged; Figure 4 As shown, the first touch electrode 21 includes a plurality of first touch electrode blocks 211 , and the bridge electrode 61 electrically connects the first touch electrode blocks 211 through the second via hole 42 penetrating the insulating layer 4 .

[0052] In a specific implementation, in the above touch control substrate provided by the embodiment of the present invention, the first touch control electrode 21 is a touch control driving electrode, and the second touch control electrode 22 is a touch control sensing electrode; or

[0053] The first touch electrodes 21 are touch sensing electrodes, and the second touch electrodes 22 are touch driving electrodes.

[0054] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 2 As shown, the first wiring (31 and 32) located in the non-touch area BB can be arranged in the same layer as the bridge layer 6 located in the touch area AA. In this way, it is only necessary to change the original composition pattern when forming the bridge layer 6, and the pattern of the first wiring (31 and 32) and the bridge layer 6 can be formed through a single composition process, without adding a process for preparing the first wiring (31 and 32) separately, which can simplify the preparation process flow, save production costs, and improve production efficiency; the connecting line 5 located in the non-touch area BB can be arranged in the same layer as the touch electrode layer 2 located in the touch area AA. In this way, it is only necessary to change the original composition pattern when forming the touch electrode layer 2, and the pattern of the connecting line 5 and the touch electrode layer 2 can be formed through a single composition process, without adding a process for preparing the connecting line 5 separately, which can simplify the preparation process flow, save production costs, and improve production efficiency.

[0055] Specifically, Figure 2 As shown, the touch signal line 3 uses Metal 1 (bridging layer 6). After the first wiring 31 reaches a certain length, Metal 2 (touch electrode layer 2) can be used as a bridging metal, and a jumper connection is made through the insulating layer 4. After Metal 2 is connected for a short distance, it jumps back to Metal 1 through the insulating layer 4, so that the charge accumulated in Metal 1 can be released to prevent ESD from occurring.

[0056] In specific implementation, for large-size display products, the longer touch signal line will make the resistance too large, affecting the touch sensitivity. Therefore, in the above-mentioned touch substrate provided in the embodiment of the present invention, Figure 5 As shown, Figure 5 For Figure 2 The touch signal line 3 further includes a second routing line 34 provided in the same layer as the touch electrode layer 2, and the extension direction of the second routing line 34 is the same as the extension direction of the first routing line (31 and 32), and the second routing line 34 and the connecting line 5 are an integral structure. In this way, the touch signal line 3 uses a double-layer metal routing line (first routing line and second routing line) of Metal 1 and Metal 2, and the double-layer metal routing line is connected by punching holes in the insulating layer 4, which can reduce the resistance of the touch signal line 3, thereby reducing the resistance of the touch signal line 3 on the basis of preventing ESD. In addition, since the second routing line 34 and the connecting line 5 are an integral structure, the second routing line 34, the connecting line 5 and the touch electrode layer 2 can be formed through a single patterning process, further reducing the manufacturing process.

[0057] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 3 As shown, the connecting wire 5 located in the non-touch area BB can be arranged in the same layer as the bridging layer 6 located in the touch area AA. In this way, it is only necessary to change the original composition pattern when forming the bridging layer 6, and the pattern of the connecting wire 5 and the bridging layer 6 can be formed through a single composition process, without adding a process for preparing the connecting wire 5 separately, which can simplify the preparation process flow, save production costs, and improve production efficiency; the first wiring (31 and 32) located in the non-touch area BB can be arranged in the same layer as the touch electrode layer 2 located in the touch area AA. In this way, it is only necessary to change the original composition pattern when forming the touch electrode layer 2, and the pattern of the first wiring (31 and 32) and the touch electrode layer 2 can be formed through a single composition process, without adding a process for preparing the first wiring (31 and 32) separately, which can simplify the preparation process flow, save production costs, and improve production efficiency.

[0058] Specifically, Figure 3As shown, the touch signal line 3 uses Metal 2 (touch electrode layer 2). After the first wiring 31 reaches a certain length, Metal 1 (bridging layer 6) can be used as a bridging metal, and a jumper connection is made through the insulating layer 4. After Metal 1 is connected for a short distance, it jumps back to Metal 2 through the insulating layer 4, so that the charge accumulated in Metal 2 can be released to prevent ESD from occurring.

[0059] In specific implementation, for large-size display products, the longer touch signal line will make the resistance too large, affecting the touch sensitivity. Therefore, in the above-mentioned touch substrate provided in the embodiment of the present invention, Figure 6 As shown, Figure 6 For Figure 3 The touch signal line 3 further includes a second routing line 34 provided in the same layer as the bridge layer 6, and the extension direction of the second routing line 34 is the same as the extension direction of the first routing line (31 and 32), and the second routing line 34 and the connecting line 5 are an integral structure. In this way, the touch signal line 3 uses a double-layer metal routing line (first routing line and second routing line) of Metal 1 and Metal 2, and the double-layer metal routing lines are connected by punching holes in the insulating layer 4, which can reduce the resistance of the touch signal line 3, thereby reducing the resistance of the touch signal line 3 on the basis of preventing ESD. In addition, since the second routing line 34 and the connecting line 5 are an integral structure, the second routing line 34, the connecting line 5 and the bridge layer 6 can be formed through a single patterning process, further reducing the manufacturing process.

[0060] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 5 and Figure 6 As shown, the orthographic projection width of the second line 34 on the substrate 1 is substantially the same as the orthographic projection width of the first line (31 and 32) on the substrate 1. In this way, the second line 34 and the first line (31 and 32) constitute the touch signal line 3 as a whole, electrically connecting the touch electrode layer 2 with the peripheral driving chip (IC) to achieve signal transmission. Specifically, the orthographic projection widths of the embodiment of the present invention are substantially the same, which may be completely the same or there may be a certain error.

[0061] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 7 and Figure 8 As shown, Figure 7 For Figure 5 The structure based on the structure, Figure 8 For Figure 6The structure based on the structure of at least one second routing line 34 includes at least two sub-routing lines (taking two sub-routing lines 341 and 342 as an example) and a second spacing area 343 located between the two sub-routing lines (341 and 342); the sub-routing lines (341 and 342) located on both sides of the second spacing area 343 are electrically connected to the first routing lines (31 and 32) through the third vias 43 penetrating the insulating layer 4. Specifically, as Figure 7 As shown, the touch signal line 3 uses a double layer of metal, Metal 2 and Metal 1, and holes are punched through the insulating layer 4 to connect the double metal lines (the first line and the second line), thereby reducing the resistance of the touch signal line and improving the touch effect. After the Metal 1 line (the first line 31) reaches a certain length, Metal 1 can be disconnected and re-punched to connect to Metal 2 (connecting line 5). After the Metal 2 line (sub-line 341) reaches a certain length, Metal 2 can be disconnected and re-punched to connect to Metal 1 (the first line 32). In this way, Metal 1 and Metal 2 are disconnected alternately to release the charges accumulated in the two metal layers, further preventing the occurrence of ESD. Figure 8 As shown, the touch signal line 3 uses double-layer metal of Metal 2 and Metal 1, and is punched through the insulating layer 4 to connect the double-layer metal routing (first routing and second routing), thereby reducing the resistance of the touch signal line and improving the touch effect. After the Metal 1 routing (sub-routing 341) reaches a certain length, Metal 1 can be disconnected and re-punched to connect to Metal 2 (first routing 31). After the Metal 2 routing (first routing 31) reaches a certain length, Metal 2 can be disconnected and re-punched to connect to Metal 1 (connecting line 5). In this way, Metal 1 and Metal 2 are alternately disconnected to release the charges accumulated in the two metal layers, further preventing the occurrence of ESD.

[0062] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 9-11 As shown, Figure 9-11 They are Figure 1 and Figure 7 In the schematic top views of the touch signal lines 3, along the arrangement direction X of the touch signal lines 3, the first spacing area 33 and the second spacing area 343 respectively located on two adjacent touch signal lines 3 are staggered. In this way, the accumulated charges of the two metal layers Metal 1 and Metal 2 can be released to prevent the occurrence of ESD.

[0063] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 9-11As shown, along the extension direction Y of the touch signal line 3, the first spacing area 33 and the second spacing area 343 on the same touch signal line 3 are alternately arranged. In this way, the two metal layers of Metal 1 and Metal 2 can be alternately disconnected to release the charges accumulated in the two metal layers, further preventing the occurrence of ESD.

[0064] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Fig. 9 As shown, along the arrangement direction X of the touch signal lines 3, the first spacing areas 33 on the touch signal lines 3 located in the odd columns are located in the same row, the second spacing areas 344 on the touch signal lines 3 located in the odd columns are located in the same row, the first spacing areas 33 on the touch signal lines 3 located in the even columns are located in the same row, the second spacing areas 343 on the touch signal lines 3 located in the even columns are located in the same row, the first spacing areas 33 on the touch signal lines 3 located in the odd columns and the first spacing areas 33 on the touch signal lines 3 located in the even columns are located in different rows, and the second spacing areas 343 on the touch signal lines 3 located in the odd columns and the second spacing areas 343 on the touch signal lines located in the even columns are located in different rows.

[0065] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Fig.10 As shown, along the arrangement direction X of the touch signal lines 3 , the first spacing areas 33 and the second spacing areas 343 on each touch signal line 3 are located in the same row and are alternately arranged.

[0066] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Fig.11 As shown, along the arrangement direction X of the touch signal lines, the first spacing areas 33 on the touch signal lines 3 are located in the same row, the second spacing areas 343 on the touch signal lines 3 are located in the same row, and the first spacing areas 33 and the second spacing areas 343 are located in different rows. This can simplify the manufacturing process.

[0067] It should be noted that the embodiments of the present invention provide Figure 9-11 The three illustrated arrangements of the first spacing area 33 and the second spacing area 343 on each touch signal line 3 are certainly not limited to the arrangements listed in the embodiments of the present invention. As long as the two metal layers Metal 1 and Metal 2 are alternately disconnected, they all fall within the scope of protection of the embodiments of the present invention, thereby releasing the charges accumulated in the two metal layers and further preventing the occurrence of ESD.

[0068] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 9-11As shown, the first spacing area 33 and the second spacing area 343 have the same length along the extension direction Y of the touch signal line 3, and the distance between the first spacing area 33 and the second spacing area 343 on the same touch signal line 3 is the same. Specifically, the same length and the same distance in the embodiment of the present invention refer to being substantially the same, not completely the same, and there may be a certain error due to the influence of the process.

[0069] In a specific implementation, in the above touch control substrate provided in the embodiment of the present invention, as Figure 7 and Figure 8 As shown, the minimum distance d1 between the adjacent edges of the first via hole 41 and the first spacing area 33 is less than 10 um, and the minimum distance d2 between the adjacent edges of the third via hole 43 and the second spacing area 343 is less than 10 um.

[0070] Therefore, the embodiment of the present invention uses double-layer metal wiring of Metal1 and Metal2 as touch signal lines, because the long touch signal line of large-size display products will cause too much resistance, and the double-layer metal wiring can well reduce resistance and improve touch effect. However, if the touch signal line is too long, it is very likely to cause ESD. Therefore, the double-layer wiring is alternately disconnected and connected to another layer of metal through holes in the insulating layer. For example, Metal 1 is disconnected and connected to Metal2 through vias. This ensures that the length of the same metal wiring will not be too long to generate ESD, and there will be no obvious increase in resistance and reduced touch performance.

[0071] Based on the same inventive concept, an embodiment of the present invention further provides a touch display device, including the above touch substrate provided by the embodiment of the present invention. The implementation of the display device can refer to the above embodiment of the touch substrate, and the repeated parts will not be repeated.

[0072] In a specific implementation, in the above display device provided in an embodiment of the present invention, if Fig.12 As shown, a driving chip (IC) is also included. One end of the touch signal line 3 is electrically connected to the touch electrode layer 2, and the other end of the touch signal line 3 is electrically connected to the driving chip (IC) to achieve signal transmission.

[0073] In specific implementation, the above-mentioned display device provided by the embodiment of the present invention also includes other functional film layers well known to those skilled in the art, which will not be described in detail here.

[0074] The touch display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc.

[0075] The above-mentioned touch substrate and touch display device provided by the embodiments of the present invention form a complete touch signal line by designing at least one touch signal line as the first line of at least two short line structures, and connecting the two first lines through connecting lines by opening holes in the insulating layer. The design of the touch signal line of the present invention can effectively reduce the static electricity accumulation capacity caused by the long line design of the touch signal line during the manufacturing process, thereby preventing ESD from occurring and improving the yield of the product.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A touch substrate, characterized in that: include: A base substrate, wherein the base substrate has a touch area and a non-touch area arranged around the touch area; A touch electrode layer, located in the touch area of ​​the base substrate; A plurality of touch signal lines are located in the non-touch area of ​​the base substrate, and the touch signal lines are electrically connected to the touch electrode layer; wherein at least one of the touch signal lines includes at least two first wiring lines located in the same layer and a first spacing area located between the two first wiring lines; an insulating layer, wherein an orthographic projection of the insulating layer on the base substrate covers an orthographic projection of the first trace and the first spacing area on the base substrate; A connecting line, wherein the connecting line electrically connects the first wirings located at two sides of the first spacing area through a first via hole penetrating the insulating layer; The touch control area further includes a bridge layer located between the base substrate and the insulating layer, the touch control electrode layer is located on a side of the insulating layer away from the base substrate, and the bridge layer includes a plurality of bridge electrodes; The touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes extending in different directions and being insulated and cross-arranged; the first touch electrodes include a plurality of first touch electrode blocks, and the bridging electrodes electrically connect the first touch electrode blocks through second via holes penetrating the insulating layer; The touch signal line also includes a second routing line, at least one of the second routing lines includes at least two sub-routing lines and a second spacing area between the two sub-routing lines; the sub-routing lines located on both sides of the second spacing area are electrically connected to the first routing line through a third via hole penetrating the insulating layer.

2. The touch substrate according to claim 1, wherein: The first wiring is disposed in the same layer as the bridge layer, and the connecting line is disposed in the same layer as the touch electrode layer.

3. The touch substrate according to claim 2, wherein: The second wiring is arranged in the same layer as the touch electrode layer, an extending direction of the second wiring is the same as an extending direction of the first wiring, and the second wiring and the connecting line are an integrated structure.

4. The touch substrate according to claim 1, wherein: The connecting line is disposed in the same layer as the bridge layer, and the first routing line is disposed in the same layer as the touch electrode layer.

5. The touch substrate according to claim 4, characterized in that: The second routing line is arranged at the same layer as the bridge layer, an extension direction of the second routing line is the same as an extension direction of the first routing line, and the second routing line and the connecting line are an integrated structure.

6. The touch control substrate according to claim 3 or 5, characterized in that: The orthographic projection width of the second wiring on the substrate is substantially the same as the orthographic projection width of the first wiring on the substrate.

7. The touch substrate according to claim 1, wherein: Along the arrangement direction of the touch signal lines, the first spacing areas and the second spacing areas respectively located on two adjacent touch signal lines are staggered.

8. The touch substrate according to claim 7, wherein: Along the extending direction of the touch signal line, the first spacing areas and the second spacing areas on the same touch signal line are alternately arranged.

9. The touch substrate according to claim 7, wherein: Along the arrangement direction of the touch signal lines, the first spacing areas and the second spacing areas on the touch signal lines are located in the same row and are alternately arranged.

10. The touch substrate according to claim 7, wherein: Along the arrangement direction of the touch signal lines, the first spacing areas on the touch signal lines are located in the same row, the second spacing areas on the touch signal lines are located in the same row, and the first spacing areas and the second spacing areas are located in different rows.

11. The touch substrate according to claim 7, wherein: Along the arrangement direction of each of the touch signal lines, the first spacing areas on each of the touch signal lines located in odd columns are located in the same row, the second spacing areas on each of the touch signal lines located in odd columns are located in the same row, the first spacing areas on each of the touch signal lines located in even columns are located in the same row, the second spacing areas on each of the touch signal lines located in even columns are located in the same row, the first spacing areas on each of the touch signal lines located in odd columns and the first spacing areas on each of the touch signal lines located in even columns are located in different rows, and the second spacing areas on each of the touch signal lines located in odd columns and the second spacing areas on each of the touch signal lines located in even columns are located in different rows.

12. The touch control substrate according to any one of claims 7 to 11, characterized in that: The first spacing area and the second spacing area have the same length along the extending direction of the touch signal line, and the distance between the first spacing area and the second spacing area on the same touch signal line is the same.

13. The touch control substrate according to any one of claims 7 to 11, characterized in that: The minimum distance between the first via hole and the adjacent edge of the first spacing area is less than 10 um, and the minimum distance between the third via hole and the adjacent edge of the second spacing area is less than 10 um.

14. A touch display device, characterized in that: It comprises the touch control substrate as claimed in any one of claims 1 to 13.

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