Touch substrate, display device

Abstract

The present disclosure provides a touch control substrate and a display device. The touch control substrate includes: a touch control area and a peripheral area surrounding the touch control area; the touch control substrate also includes: coupled touch control electrodes and touch control signal lines; at least part of the touch control electrodes is located in the touch control area; at least part of the touch control signal lines is located in the peripheral area, and the touch control signal lines include a first part, a second part, and a third part connected end to end in sequence, the first part and the third part have the same extension direction, and the extension direction of at least one side of the second part intersects with the extension direction of the first part; the width of the second part in the extension direction perpendicular to the at least one side is greater than the width of the first part in the extension direction perpendicular to itself; and / or, greater than the width of the third part in the extension direction perpendicular to itself.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 202180000664.6 and filing date of March 31, 2021. Technical Field

[0002] The present disclosure relates to the field of display technology, and in particular to a touch control substrate and a display device. Background Art

[0003] With the rapid development of active-matrix organic light-emitting diode (AMOLED) display technology, AMOLED display products are widely used in various fields due to their advantages of low power consumption, wide color gamut, and large size. In order to better enhance the user experience of AMOLED display products, AMOLED display products also integrate touch structures, so that display products have both display and touch functions. Summary of the invention

[0004] The purpose of the present disclosure is to provide a touch substrate and a display device.

[0005] In order to achieve the above objectives, the present disclosure provides the following technical solutions:

[0006] A first aspect of the present disclosure provides a touch control substrate, comprising: a touch control area and a peripheral area surrounding the touch control area; the touch control substrate further comprises: touch control electrodes and touch control signal lines coupled to each other;

[0007] At least part of the touch electrode is located in the touch area;

[0008] At least a portion of the touch signal line is located in the peripheral area, the touch signal line includes at least one corner portion, the corner portion includes a first portion, a second portion, and a third portion connected end to end in sequence, the first portion and the third portion extend in the same direction, and the second portion extends in a direction that intersects with the first portion;

[0009] The width of the second portion in a direction perpendicular to its own extension direction is greater than the width of the first portion in a direction perpendicular to its own extension direction; and / or, greater than the width of the third portion in a direction perpendicular to its own extension direction.

[0010] Optionally, the touch substrate includes a plurality of touch signal lines, and the plurality of corner parts included in the plurality of touch signal lines are divided into at least one group of corner parts, and the plurality of second parts included in each group of corner parts are arranged at intervals along a first direction, and the first direction intersects with both an extension direction of the first part and an extension direction of the second part.

[0011] Optionally, in the same group of corner portions, an included angle a1 between the first direction and an extension direction of the first portion satisfies: 30°≤a1≤80°.

[0012] Optionally, the extension direction of the second portion is not perpendicular to the first direction, and the angle between the first portion and the second portion of the same touch signal line and the angle between the third portion and the second portion are both obtuse angles.

[0013] Optionally, the minimum interval between multiple second parts belonging to a group of corner parts is greater than the interval between multiple first parts in the group of corner parts, and / or greater than the interval between multiple third parts in the group of corner parts.

[0014] Optionally, the first portion and the third portion do not overlap in an extension direction of the first portion, and the first portion and the third portion do not overlap in a direction perpendicular to the extension direction of the first portion.

[0015] Optionally, the third portion is closer to the touch area than the first portion.

[0016] Optionally, the width of the second portion in a direction perpendicular to its own extension direction is 1.5 to 4 times the width of the first portion in a direction perpendicular to its own extension direction.

[0017] Optionally, the touch signal line includes a first conductive layer and a second conductive layer arranged in different layers; the first conductive layer and the second conductive layer both include the corner portion, and the second portion in the first conductive layer is coupled to the second portion in the second conductive layer.

[0018] Optionally, the touch substrate also includes a touch insulation layer arranged between the first conductive layer and the second conductive layer, the touch insulation layer includes a first via, the orthographic projection of the first via on the base of the touch substrate overlaps with the orthographic projection of the second part of the first conductive layer on the base, and overlaps with the orthographic projection of the second part of the second conductive layer on the base, and the second part of the first conductive layer is coupled to the second part of the second conductive layer through the first via.

[0019] Optionally, an extension direction of an orthographic projection of the first via hole on the substrate is the same as an extension direction of the second portion.

[0020] Optionally, in a direction perpendicular to an extension direction of the second portion, a width of the first via hole is 0.2 to 0.5 times a width of the second portion.

[0021] Optionally, the touch electrode includes a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrode includes a plurality of first electrode patterns formed into an integrated structure, the second touch electrode includes a plurality of second electrode patterns arranged in sequence, and adjacent second electrode patterns are coupled via a connecting bridge; the first electrode pattern and the second electrode pattern are provided in the same layer and the same material, and the second electrode pattern and the connecting bridge are provided in a different layer;

[0022] The first conductive layer and the first electrode pattern are provided in the same layer and made of the same material;

[0023] The second conductive layer and the connecting bridge are provided in the same layer and with the same material.

[0024] Optionally, the plurality of second touch electrodes are arranged along a second direction; each of at least some of the touch signal lines electrically connected to the second touch electrodes comprises a first compensation line segment, and at least some of the touch signal lines comprise a plurality of first compensation line segments arranged along the second direction;

[0025] The first compensation line segment closest to the touch area is coupled to the second touch electrode closest to the first compensation line segment.

[0026] Optionally, at least part of the touch signal lines include a first compensation line segment, the first compensation line segment includes at least two first corner portions, and the first corner portion includes the first portion, the second portion and the third portion;

[0027] The at least two first corner portions belonging to the same touch signal line are located on the same side of the touch area, the at least two first corner portions are arranged roughly along the extension direction of the first portion, and the minimum distances between the at least two first corner portions and the touch area are different.

[0028] Optionally, at least part of the touch signal line also includes a first non-compensation line segment, the first non-compensation line segment and the first compensation line segment are located on different sides of the touch area, the first non-compensation line segment is respectively coupled to the first end of the first compensation line segment and the touch electrode; the first non-compensation line segment includes at least one second corner portion, the second corner portion includes the first portion, the second portion and the third portion.

[0029] Optionally, in the first corner portion included in the first compensating line segment, the third portion is closer to the first non-compensating line segment than the first portion.

[0030] Optionally, a minimum width of the first non-compensation line segment in a direction perpendicular to its own extension direction is greater than a width of the first part of the first compensation line segment in a direction perpendicular to its own extension direction.

[0031] Optionally, the touch control substrate includes a touch control chip, and the touch control signal line further includes a second compensation line segment and a second non-compensation line segment;

[0032] At least a portion of the second compensation line segment extends in the same direction as the first portion, at least a portion of the second compensation line segment is located on a side of the first compensation line segment facing away from the touch area, and the second compensation line segment is respectively coupled to the second end of the first compensation line segment and the first end of the second non-compensation line segment; the second end of the second non-compensation line segment is coupled to the touch chip.

[0033] Optionally, the width of the second compensation line segment in a direction perpendicular to its own extension direction is equal to the width of the first part in a direction perpendicular to its own extension direction; and / or, is equal to the width of the third part in a direction perpendicular to its own extension direction.

[0034] Optionally, a width of the second non-compensation line segment in a direction perpendicular to its own extension direction is greater than a width of the second compensation line segment in a direction perpendicular to its own extension direction.

[0035] Optionally, the first conductive layer and the second conductive layer both include the first compensation line segment, the second compensation line segment, the first non-compensation line segment and the second non-compensation line segment;

[0036] The first non-compensation line segment included in the first conductive layer is coupled to the first non-compensation line segment included in the second conductive layer;

[0037] The second non-compensation line segment included in the first conductive layer is coupled to the second non-compensation line segment included in the second conductive layer.

[0038] Based on the technical solution of the touch control substrate, a second aspect of the present disclosure provides a display device, comprising the touch control substrate.

[0039] Optionally, the display device further includes a display panel, the touch substrate and the display panel are stacked, and the touch substrate is located on the light emitting side of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0041] Figure 1 A schematic diagram of the structure of a touch control substrate provided in an embodiment of the present disclosure;

[0042] Figure 2 for Figure 1A magnified schematic diagram of the A1 portion;

[0043] Figure 3 for Figure 2 a first enlarged schematic diagram of the A3 portion;

[0044] Figure 4 for Figure 2 a second enlarged schematic diagram of the middle A3 portion;

[0045] Figure 5 for Figure 1 A first enlarged schematic diagram of the portion A2;

[0046] Figure 6 for Figure 1 A second enlarged schematic diagram of the portion A2;

[0047] Figure 7 A schematic cross-sectional view of a touch electrode provided in an embodiment of the present disclosure;

[0048] Figure 8 A first cross-sectional schematic diagram of a display device provided in an embodiment of the present disclosure;

[0049] Fig. 9 This is a second cross-sectional schematic diagram of the display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] In order to further illustrate the touch substrate and the display device provided by the embodiments of the present disclosure, a detailed description is given below in conjunction with the accompanying drawings.

[0051] In the related art, when a display product integrates a touch structure, the touch structure generally includes touch electrodes and touch signal lines. The touch signal lines are used to transmit signals to the touch electrodes or to feed back signals sensed by the touch electrodes. Due to limited layout space, the layout of the touch signal lines is different, resulting in poor uniformity of the signals transmitted by the touch signal lines.

[0052] The present disclosure provides a touch substrate, on which touch electrodes and touch signal lines are arranged. The touch signal lines are designed with resistance compensation, that is, the length of at least part of the touch signal lines is extended, and the line width of the extended part is reduced, so as to ensure the uniformity of resistance of each touch signal line in the touch substrate and ensure the uniformity of signal transmission of each touch signal line in the touch substrate.

[0053] like Figure 3 and Figure 5 As shown, after the compensation design is performed on the above touch substrate, a corner area (such as the position where 1101b is located) will appear on the touch signal line, and there is a risk of disconnection of the touch signal line in the corner area.

[0054] See also Figure 1 , Figure 2 and Figure 4 The embodiment of the present disclosure provides a touch control substrate 1, comprising: a touch control area 10 and a peripheral area 11 surrounding the touch control area 10; the touch control substrate 1 further comprises: touch control electrodes 101 and touch control signal lines 110 coupled to each other;

[0055] At least part of the touch electrode 101 is located in the touch area 10;

[0056] At least part of the touch signal line 110 is located in the peripheral area 11, and the touch signal line 110 includes at least one corner portion, and the corner portion includes a first portion 1101a, a second portion 1101b, and a third portion 1101c that are sequentially connected end to end, the first portion 1101a and the third portion 1101c extend in the same direction, and the second portion 1101b extends in a direction that intersects with the first portion 1101a.

[0057] The width of the second portion 1101b perpendicular to its own extension direction is greater than the width of the first portion 1101a perpendicular to its own extension direction; and / or, greater than the width of the third portion 1101c perpendicular to its own extension direction.

[0058] Exemplarily, the touch substrate 1 includes the touch area 10 and the peripheral area 11, the touch area 10 is provided with the touch electrode 101, the peripheral area 11 is provided with the touch signal line 110 and the touch chip, the touch signal line 110 is connected between the corresponding touch electrode 101 and the touch chip, and is used to transmit the signal provided by the touch chip to the corresponding touch electrode 101, and / or to transmit the signal on the corresponding touch electrode 101 to the touch chip.

[0059] Exemplarily, the touch control substrate 1 includes a self-capacitive touch control substrate or a mutual-capacitive touch control substrate.

[0060] For example, when the touch substrate 1 is actually used, a user touches the touch area 10 , and the touch electrodes 101 of the touch area 10 feed back the sensed signal to the touch chip, and the touch chip determines the touch position based on the received touch signal.

[0061] Exemplarily, the touch substrate 1 includes a plurality of touch electrodes 101 and a plurality of touch signal lines 110 , and at least some of the touch electrodes 101 are connected to the touch signal lines 110 in a one-to-one correspondence.

[0062] Exemplarily, the touch signal line 110 includes at least one corner portion, the corner portion includes the first portion 1101a, the second portion 1101b and the third portion 1101c, the second portion 1101b is located between the first portion 1101a and the third portion 1101c, and the second portion 1101b is coupled to the first portion 1101a and the third portion 1101c respectively. Exemplarily, the first compensation line segment 1101 forms a corner area at the second portion 1101b.

[0063] Exemplarily, the third portion 1101c is closer to the touch area 10 than the first portion 1101a.

[0064] Exemplarily, the touch substrate 1 includes a rectangular touch substrate, the touch substrate 1 includes an upper frame and a lower frame that are relatively arranged, and also includes a left frame and a right frame that are relatively arranged, and the touch chip included in the touch substrate 1 is arranged on the lower frame. Exemplarily, the extension direction of the first part 1101a and the third part 1101c is the same as the extension direction of the upper frame and the lower frame. Exemplarily, the extension direction of the first part 1101a and the third part 1101c is the same as the extension direction of the left frame and the right frame. Exemplarily, the angle a2 between the extension direction of the second part 1101b and the extension direction of the first part 1101a satisfies: 0°<a2≤90°.

[0065] According to the specific structure of the touch substrate 1 described above, in the touch substrate 1 provided in the embodiment of the present disclosure, by setting the width of the second portion 1101b in a direction perpendicular to its own extension to be greater than the width of the first portion 1101a in a direction perpendicular to its own extension, and / or the width of the second portion 1101b in a direction perpendicular to its own extension to be greater than the width of the third portion 1101c in a direction perpendicular to its own extension, the width of the corner portion at the corner where the second portion 1101b is located is widened, thereby reducing the risk of disconnection of the touch signal line 110 at the corner.

[0066] like Figure 2 and Figure 4 As shown, in some embodiments, the touch substrate 1 includes a plurality of touch signal lines 110, and the plurality of corner portions included in the plurality of touch signal lines 110 are divided into at least one group of corner portions (such as Figure 2 In the embodiment of the present invention, in the middle (part A3, part B1 and part B2), each group of corner parts includes a plurality of second parts 1101b arranged at intervals along a first direction, and the first direction intersects with both the extension direction of the first part 1101a and the extension direction of the second part 1101b.

[0067] Exemplarily, the first direction is perpendicular to an extension direction of the second portion 1101b.

[0068] Exemplarily, the angle between the first direction and the extension direction of the first portion 1101a is less than or equal to 45°.

[0069] In the touch substrate 1 provided in the above embodiment, the plurality of second parts 1101b included in each group of corner parts are arranged at intervals along the first direction, and the first direction intersects with both the extension direction of the first part 1101a and the extension direction of the second part 1101b, so that even if the width of the second part 1101b is widened, it is possible to ensure that the overall width of the corner part included in the touch signal line 110 in the extension direction perpendicular to the first part 1101a remains unchanged. Therefore, the touch substrate 1 provided in the above embodiment reduces the risk of disconnection of the touch signal line 110 at the corner, while avoiding increasing the frame width of the touch substrate 1 occupied by the corner part as a whole, which is conducive to the narrow frame of the touch substrate 1.

[0070] In some embodiments, in the same group of corner portions, an included angle a1 between the first direction and an extending direction of the first portion satisfies: 30°≤a1≤80°.

[0071] The above configuration not only avoids increasing the frame width of the touch substrate 1 occupied by the entire corner portion, but also maximizes the width of the second portion 1101b, thereby better reducing the risk of disconnection of the touch signal line 110 at the corner.

[0072] In some embodiments, the extension direction of the second portion is not perpendicular to the first direction, and the angle between the first portion and the second portion of the same touch signal line and the angle between the third portion and the second portion are both obtuse angles.

[0073] In the same touch signal line, the angle between the first portion and the second portion and the angle between the third portion and the second portion are both obtuse angles.

[0074] The above configuration is more conducive to reducing the risk of disconnection of the touch signal line 110 at the corner, while reducing the frame width of the touch substrate 1 occupied by the entire corner portion, which is conducive to narrowing the frame of the touch substrate 1.

[0075] In some embodiments, the minimum spacing between multiple second parts 1101b belonging to a group of corner parts is greater than the spacing between multiple first parts 1101a in the group of corner parts, and / or greater than the spacing between multiple third parts 1101c in the group of corner parts.

[0076] The above arrangement not only avoids increasing the frame width of the touch substrate 1 occupied by the corner portion as a whole, but also maximizes the width of the second portion 1101b, thereby better reducing the risk of disconnection of the touch signal line 110 at the corner. Moreover, the above arrangement also better reduces the risk of short circuit between adjacent second portions 1101b.

[0077] In some embodiments, the first portion and the third portion are configured not to overlap in an extension direction of the first portion, and the first portion and the third portion are configured not to overlap in a direction perpendicular to the extension direction of the first portion.

[0078] In some embodiments, the third portion is disposed closer to the touch area than the first portion.

[0079] The above-mentioned setting method is not only conducive to reducing the layout difficulty of the touch signal line and ensuring the connection performance between the touch signal line and the touch electrode, but also conducive to reducing the risk of disconnection of the touch signal line 110 at the corner, while reducing the border width of the touch substrate 1 occupied by the entire corner part, which is conducive to the narrow border of the touch substrate 1.

[0080] In some embodiments, a width of the second portion in a direction perpendicular to its own extension direction is 1.5 to 4 times the width of the first portion in a direction perpendicular to its own extension direction.

[0081] The above configuration is more conducive to reducing the risk of disconnection of the touch signal line 110 at the corner, while reducing the frame width of the touch substrate 1 occupied by the entire corner portion, which is conducive to narrowing the frame of the touch substrate 1.

[0082] In some embodiments, the touch signal line 110 includes a first conductive layer and a second conductive layer arranged in different layers; the first conductive layer and the second conductive layer both include the corner portion, and the second portion 1101b in the first conductive layer is coupled to the second portion 1101b in the second conductive layer.

[0083] Exemplarily, the orthographic projection of the first conductive layer on the base of the touch substrate 1 at least partially overlaps with the orthographic projection of the second conductive layer on the base. Exemplarily, the first conductive layer and the second conductive layer are coupled at other locations except the second portion 1101b.

[0084] Exemplarily, an insulating layer is disposed between the first conductive layer and the second conductive layer, and the insulating layer is made of inorganic materials such as silicon nitride.

[0085] Illustratively, an orthographic projection of a corner portion included in the first conductive layer on the substrate coincides with an orthographic projection of a corner portion included in the second conductive layer on the substrate.

[0086] Exemplarily, both the first conductive layer and the second conductive layer are made of metal material.

[0087] Since the second part 1101b has a wider width in the direction perpendicular to its own extension direction, setting the second part 1101b in the first conductive layer to couple with the second part 1101b in the second conductive layer can better connect the first conductive layer with the second conductive wire layer, so that the touch signal line 110 can better achieve touch signal uniformity and the reliability of the signal line itself.

[0088] It should be noted that in order to ensure the uniformity of the signal transmission of the touch signal line 110, the load of each touch signal line 110 in the touch substrate 1 needs to be uniform. Therefore, in the process of designing the touch signal line 110, a related resistance compensation unit will be designed to better achieve the effect of uniform resistance of each touch signal line 110. Due to the limited layout space and the effectiveness of compensation, the design of the compensation line will use the minimum line width that can be achieved in the process to perform relevant compensation. In order to ensure the connectivity of the signal channel, a double-layer metal line parallel design is adopted to reduce the risk of disconnection of the signal channel.

[0089] like Figure 4 As shown, in some embodiments, the touch substrate further includes a touch insulating layer disposed between the first conductive layer and the second conductive layer, the touch insulating layer includes a first via 12, an orthographic projection of the first via 12 on the base of the touch substrate 1 overlaps with an orthographic projection of the second portion 1101b in the first conductive layer on the base, and overlaps with an orthographic projection of the second portion 1101b in the second conductive layer on the base, and the second portion 1101b in the first conductive layer is coupled to the second portion 1101b in the second conductive layer through the first via 12.

[0090] like Figure 4 As shown, in some embodiments, the extension direction of the orthographic projection of the first via hole 12 on the substrate is the same as the extension direction of the second portion 1101b.

[0091] Exemplarily, the orthographic projection of the second part 1101b in the first conductive layer on the substrate of the touch substrate 1 has an overlapping area with the orthographic projection of the second part 1101b in the second conductive layer on the substrate, and the second part 1101b in the first conductive layer and the second part 1101b in the second conductive layer are coupled through a first via 12, and the orthographic projection of the first via 12 on the substrate is located in the overlapping area.

[0092] Exemplarily, the orthographic projection of the first via hole 12 on the substrate is a rectangle. Exemplarily, the size of the via hole is 5 μm×5 μm.

[0093] Exemplarily, the extension direction of the orthographic projection of the first via 12 on the substrate is the same as the extension direction of the second portion 1101b, and the minimum width of the orthographic projection of the first via 12 on the substrate perpendicular to its own extension direction is between 3μm and 6μm, including endpoint values.

[0094] Exemplarily, the width of the second portion 1101b perpendicular to its own extension direction is between 8 μm and 11 μm, including end values. Exemplarily, the minimum distance between the boundary of the second portion 1101b and the boundary of the first via 12 is greater than or equal to 2.5 μm.

[0095] In the touch control substrate 1 provided in the above embodiment, by setting the extension direction of the orthographic projection of the first via hole 12 on the substrate to be the same as the extension direction of the second portion 1101b, the first via hole 12 can be made larger in size, thereby ensuring better connection performance between the second portion 1101b in the first conductive layer and the second portion 1101b in the second conductive layer.

[0096] In some embodiments, in a direction perpendicular to an extension direction of the second portion, a width of the first via hole is 0.2 to 0.5 times a width of the second portion.

[0097] The above configuration enables the first via hole 12 to have a larger size, thereby ensuring better connection performance between the second portion 1101b in the first conductive layer and the second portion 1101b in the second conductive layer.

[0098] like Figure 1 and Figure 7As shown, in some embodiments, the touch electrode 101 includes multiple first touch electrodes 1011 and multiple second touch electrodes 1012, the first touch electrode 1011 includes multiple first electrode patterns formed as an integrated structure, the second touch electrode 1012 includes multiple second electrode patterns arranged in sequence, and adjacent second electrode patterns are coupled by a connecting bridge 1013; the first electrode pattern and the second electrode pattern are set in the same layer and the same material, and the second electrode pattern and the connecting bridge 1013 are set in different layers; the first conductive layer and the first electrode pattern are set in the same layer and the same material; the second conductive layer and the connecting bridge 1013 are set in the same layer and the same material.

[0099] Exemplarily, the first touch electrode 1011 includes a plurality of first electrode patterns, which are coupled in sequence to form an integrated structure; the second touch electrode 1012 includes a plurality of second electrode patterns coupled in sequence, and an arrangement direction of the plurality of second electrode patterns intersects with an arrangement direction of the plurality of first electrode patterns.

[0100] Exemplarily, the first electrode pattern and the second electrode pattern are provided in the same layer and the same material, and can be formed in the same patterning process. There is a gap between adjacent first electrode patterns and second electrode patterns, and adjacent first electrode patterns and second electrode patterns are insulated from each other, so as to form a capacitor structure.

[0101] Exemplarily, there is an overlapping area between the orthographic projection of the second electrode pattern on the substrate and the orthographic projection of the connecting bridge 1013 on the substrate, and the second electrode pattern and the connecting bridge 1013 are connected through a via, and the orthographic projection of the via on the substrate is located in the overlapping area.

[0102] Exemplarily, the first touch electrode 1011 includes one of a driving electrode and a sensing electrode, and the second touch electrode 1012 includes the other of the driving electrode and the sensing electrode.

[0103] The first conductive layer and the first electrode pattern are arranged in the same layer and with the same material, so that the first conductive layer and the first electrode pattern can be formed simultaneously in the same patterning process, thereby greatly simplifying the manufacturing process of the touch substrate 1 and reducing the manufacturing cost of the touch substrate 1 .

[0104] The second conductive layer and the connecting bridge 1013 are provided with the same layer and the same material, so that the second conductive layer and the connecting bridge 1013 can be formed simultaneously in the same patterning process, thereby greatly simplifying the manufacturing process of the touch substrate 1 and reducing the manufacturing cost of the touch substrate 1 .

[0105] like Figure 1and Figure 2 As shown, in some embodiments, the plurality of second touch electrodes 1012 are arranged along the second direction; among at least some of the touch signal lines electrically connected to the second touch electrodes, each touch signal line is a first compensation line segment 1101, and at least some of the touch signal lines include a plurality of first compensation line segments 1101 arranged along the second direction;

[0106] A first compensation line segment 1101 closest to the touch area is disposed and coupled to a second touch electrode 1012 closest to the first compensation line segment 1101 .

[0107] Exemplarily, at least some of the touch signal lines include sensing signal lines.

[0108] Exemplarily, the first compensation line segment 1101 closest to the touch area is coupled to the second touch electrode 1012 closest to the first compensation line segment 1101; the first compensation line segment 1101 second closest to the touch area is coupled to the second touch electrode 1012 second closest to the first compensation line segment 1101; and so on, until the first compensation line segment 1101 farthest from the touch area is coupled to the second touch electrode 1012 farthest from the first compensation line segment 1101.

[0109] The above configuration ensures that the touch signal line is coupled to the touch electrode and effectively reduces the difficulty of layout of the touch signal line.

[0110] like Figure 2 As shown, in some embodiments, at least part of the touch signal line includes a first compensation line segment 1101, the first compensation line segment 1101 includes at least two first corner portions, the first corner portion includes the first portion 1101a, the second portion 1101b and the third portion 1101c; the at least two first corner portions belonging to the same touch signal line are located on the same side of the touch area 10, the at least two first corner portions are arranged roughly along the extension direction of the first portion 1101a, and the minimum distances between the at least two first corner portions and the touch area are different.

[0111] Exemplarily, one of the at least two first corner portions (such as B2 ) is closer to the touch area 10 than the other first corner portion (such as A3 ).

[0112] Exemplarily, the two first corner portions are both located at the lower frame of the touch substrate 1. Exemplarily, one of the two first corner portions is located near the middle of the lower frame, and the other of the two first corner portions is located at a position of the lower frame near the corner of the touch substrate 1.

[0113] Exemplarily, the touch signal line 110 further includes an incoming line portion (such as the second non-compensation line segment 1104 mentioned later) coupled to the touch chip, and the other of the two first corner portions is located between the touch area 10 and the incoming line portion.

[0114] For instructions, see Figure 1 , Figure 2 and Figure 6 , Figure 2 The figure shows that the second non-compensation line segments 1104 included in RX1 to RX16 are arranged from right to left. In each RX line, the second non-compensation line segment 1104 extends from the touch chip toward the touch area until it is coupled with the second compensation line segment 1102. The second compensation line segment 1102 continues to extend to the left from the position coupled with the second non-compensation line segment 1104 until it is coupled with one end of the first compensation line segment 1101. The first compensation line segment 1101 continues to extend to the right from the position coupled with the second compensation line segment 1102 until it is coupled with the first non-compensation line segment 1103.

[0115] At the lower frame of the touch substrate, RX1 to RX16 all adopt a layout that turns left first and then right, and the first compensation line segment 1101 and the second compensation line segment 1102 of each RX line are located in the outer area of ​​the first compensation line segment 1101 and the second compensation line segment 1102 of the adjacent previous RX line.

[0116] In order to better realize the layout of the first compensation line segment 1101 and the coupling between the first compensation line segment 1101 and the corresponding first non-compensation line segment 1103 , the first compensation line segment 1101 is configured to include two first corner portions.

[0117] In the touch substrate 1 provided in the above embodiment, by setting the first compensation line segment 1101 to include two first corner portions, it is not only more conducive to reducing the layout difficulty of the touch signal line 110 , but also conducive to narrowing the frame of the touch substrate 1 .

[0118] like Figure 1 and Figure 6 As shown, in some embodiments, at least part of the touch signal line 110 also includes a first non-compensation line segment 1103, the first non-compensation line segment 1103 and the first compensation line segment 1101 are located on different sides of the touch area 10, and the first non-compensation line segment 1103 is respectively coupled to the first end of the first compensation line segment 1101 and the touch electrode 101; the first non-compensation line segment 1103 includes at least one second corner portion, and the second corner portion includes the first portion 1101a, the second portion 1101b and the third portion 1101c.

[0119] Exemplarily, the first compensation line segment 1101 is located at the lower frame of the touch substrate 1, that is, at the lower side of the touch area 10; the first non-compensation line segment 1103 is located at the left frame or the right frame of the touch substrate 1, that is, at the left side or the right side of the touch area 10.

[0120] Exemplarily, at least a portion of the first non-compensation line segment 1103 extends along the left border or the right border.

[0121] Exemplarily, one end of the first non-compensation line segment 1103 is coupled to the first end of the first compensation line segment 1101 , and the other end of the first non-compensation line segment 1103 is coupled to the touch electrode 101 .

[0122] Exemplarily, the first non-compensating line segment 1103 includes at least one second corner portion, the second corner portion includes the first portion 1101a, the second portion 1101b and the third portion 1101c which are connected end to end in sequence, the first portion 1101a and the third portion 1101c have the same extension direction, the extension direction of the second portion 1101b intersects with the extension direction of the first portion 1101a; the width of the second portion 1101b in a direction perpendicular to its own extension direction is greater than the width of the first portion 1101a in a direction perpendicular to its own extension direction; and / or, greater than the width of the third portion 1101c in a direction perpendicular to its own extension direction.

[0123] In the touch substrate 1 provided in the above embodiment, by setting the first non-compensation line segment 1103 to include at least one second corner portion, the width of the first non-compensation line segment 1103 at the corner where the second portion 1101b is located is widened, thereby reducing the risk of the first non-compensation line segment 1103 being broken at the corner.

[0124] In some embodiments, the third portion 1101c is disposed in the first corner portion included in the first compensating segment 1101, and is closer to the first non-compensating segment 1103 than the first portion 1101a.

[0125] The above-mentioned setting method is not only conducive to reducing the layout difficulty of the touch signal line and ensuring the connection performance between the touch signal line and the touch electrode, but also conducive to reducing the risk of disconnection of the touch signal line 110 at the corner, while reducing the border width of the touch substrate 1 occupied by the entire corner part, which is conducive to the narrow border of the touch substrate 1.

[0126] In some embodiments, the minimum width of the first non-compensation line segment 1103 in a direction perpendicular to its own extension direction is set to be greater than the width of the first portion 1101a of the first compensation line segment 1101 in a direction perpendicular to its own extension direction.

[0127] Exemplarily, the minimum width of the first non-compensating line segment 1103 in a direction perpendicular to its own extension direction includes: the minimum width of the first part 1101a included in the corner part of the first non-compensating line segment 1103 in a direction perpendicular to its own extension direction, the minimum width of the second part 1101b included in the corner part of the first non-compensating line segment 1103 in a direction perpendicular to its own extension direction, and the minimum width of the third part 1101c included in the corner part of the first non-compensating line segment 1103 in a direction perpendicular to its own extension direction, the smallest width value.

[0128] The above configuration makes the first non-compensation line segment 1103 have a wider line width, so that when the first compensation line segment 1101 is coupled to the touch electrode 101 through the first non-compensation line segment 1103 , the connection performance between the first compensation line segment 1101 and the touch electrode 101 can be guaranteed.

[0129] In some embodiments, the touch substrate 1 includes a touch chip, and the touch signal line 110 also includes a second compensation line segment 1102 and a second non-compensation line segment 1104; at least a portion of the second compensation line segment 1102 extends in the same direction as the first portion 1101a, at least a portion of the second compensation line segment 1102 is located on the side of the first compensation line segment 1101 facing away from the touch area 10, and the second compensation line segment 1102 is coupled to the second end of the first compensation line segment 1101 and the first end of the second non-compensation line segment 1104 respectively; the second end of the second non-compensation line segment 1104 is coupled to the touch chip.

[0130] Exemplarily, the touch signal line 110 further includes a second compensation line segment 1102 , at least part of which extends along the lower frame of the touch substrate 1 . At least part of the first compensation line segment 1101 is located between the second compensation line segment 1102 and the touch area 10 .

[0131] Exemplarily, a first end of the second compensation line segment 1102 is coupled to a first end of the second non-compensation line segment 1104 , and a second end of the second compensation line segment 1102 is coupled to a second end of the first compensation line segment 1101 .

[0132] Exemplarily, the touch signal line 110 further includes a second non-compensation line segment 1104, and a second end of the second non-compensation line segment 1104 is coupled to a corresponding pin in the touch chip. Exemplarily, an extension direction of the second non-compensation line segment 1104 intersects with an extension direction of the first portion 1101a in the first compensation line segment 1101. Exemplarily, an extension direction of the second non-compensation line segment 1104 is perpendicular to an extension direction of the first portion 1101a in the first compensation line segment 1101.

[0133] In the touch substrate 1 provided in the above embodiment, by setting the touch signal line 110 to also include the second compensation line segment 1102 and the second non-compensation line segment 1104, not only is the uniformity of the touch signal line 110 compensated at the lower frame achieved, but also good connection performance between the touch signal line 110 and the touch chip is ensured.

[0134] In some embodiments, the width of the second compensation line segment 1102 in a direction perpendicular to its own extension direction is set to be equal to the width of the first part 1101a in a direction perpendicular to its own extension direction; and / or, equal to the width of the third part 1101c in a direction perpendicular to its own extension direction.

[0135] Exemplarily, the width of the second compensation line segment 1102 in a direction perpendicular to its own extension direction is equal to the width of the first portion 1101a in the first compensation line in a direction perpendicular to its own extension direction; and / or, is equal to the width of the third portion 1101c in the first compensation line in a direction perpendicular to its own extension direction.

[0136] Since the width of the first portion 1101a of the first compensation line is relatively small in the direction perpendicular to its own extension direction, the above-mentioned setting method makes the second compensation line segment 1102 also have a relatively small width. In this way, while achieving uniformity compensation for the touch signal line 110, it avoids the touch signal line 110 occupying too wide a border width, which is conducive to the development of a narrow border of the touch substrate 1.

[0137] In some embodiments, the width of the second non-compensation line segment 1104 in a direction perpendicular to its own extension direction is set to be greater than the width of the second compensation line segment 1102 in a direction perpendicular to its own extension direction.

[0138] The above configuration method well ensures the reliability of the second non-compensation line segment 1104 and the connection performance between the first compensation line segment 1101 and the touch chip.

[0139] In some embodiments, the first conductive layer and the second conductive layer both include the first compensation line segment, the second compensation line segment 1102 , the first non-compensation line segment 1103 and the second non-compensation line segment 1104 ;

[0140] The first non-compensation line segment 1103 included in the first conductive layer is coupled to the first non-compensation line segment 1103 included in the second conductive layer;

[0141] The second non-compensation line segment 1104 included in the first conductive layer is coupled to the second non-compensation line segment 1104 included in the second conductive layer.

[0142] Exemplarily, the first compensation line segment 1101, the second compensation line segment 1102, the first non-compensation line segment 1103 and the second non-compensation line segment 1104 included in the first conductive layer are formed into an integrated structure. Exemplarily, the first compensation line segment 1101, the second compensation line segment 1102, the first non-compensation line segment 1103 and the second non-compensation line segment 1104 included in the second conductive layer are formed into an integrated structure.

[0143] Exemplarily, the orthographic projection of the first non-compensated line segment 1103 included in the first conductive layer on the substrate has an overlapping area with the orthographic projection of the first non-compensated line segment 1103 included in the second conductive layer on the substrate, and the first non-compensated line segment 1103 included in the first conductive layer and the first non-compensated line segment 1103 included in the second conductive layer are coupled through a via, and the orthographic projection of the via on the substrate is located in the overlapping area.

[0144] Exemplarily, one end of the first non-compensation line segment 1103 included in the first conductive layer close to the touch electrode 101 is coupled to one end of the first non-compensation line segment 1103 included in the second conductive layer close to the touch electrode 101 .

[0145] Exemplarily, the orthographic projection of the second non-compensated line segment 1104 included in the first conductive layer on the substrate has an overlapping area with the orthographic projection of the second non-compensated line segment 1104 included in the second conductive layer on the substrate, and the second non-compensated line segment 1104 included in the first conductive layer and the second non-compensated line segment 1104 included in the second conductive layer are coupled through a via, and the orthographic projection of the via on the substrate is located in the overlapping area.

[0146] Exemplarily, one end of the second non-compensation line segment 1104 included in the first conductive layer close to the touch chip is coupled to one end of the second non-compensation line segment 1104 included in the second conductive layer close to the touch chip.

[0147] In the touch substrate 1 provided in the above embodiment, by setting the first conductive layer and the second conductive layer to include the first compensation line segment 1101, the second compensation line segment 1102, the first non-compensation line segment 1103 and the second non-compensation line segment 1104, and setting the first conductive layer and the second conductive layer to be coupled at the first non-compensation line segment 1103 and the second non-compensation line segment 1104 respectively, not only the reliability and connection performance of the touch signal line 110 are better guaranteed, but also it is beneficial to adjust the uniformity of the touch signal line 110.

[0148] In some embodiments, an orthographic projection of the first conductive layer on the base of the touch control substrate 1 is configured to coincide with an orthographic projection of the second conductive layer on the base.

[0149] The above configuration can minimize the layout space occupied by the touch signal line 110 , which is beneficial to the development of a narrow frame of the touch substrate 1 .

[0150] like Figure 1 and Figure 6 As shown, in some embodiments, the touch substrate 1 further includes a first shielding line 13 , and at least a portion of the first shielding line 13 is located between the touch area 10 and the touch signal line 110 .

[0151] Exemplarily, the first shielding line 13 has a stable potential. Exemplarily, the first shielding line 13 is loaded with a GND signal.

[0152] The touch control substrate 1 is configured as described above and further includes the first shielding wire 13 , so that the first shielding wire 13 can well shield the interference between the touch control signal wire 110 and the touch control electrode, thereby well ensuring the stability of the touch control signal transmitted by the touch control signal wire 110 .

[0153] like Figure 1 As shown, in some embodiments, the touch signal line 110 includes a driving signal line TX and / or a sensing signal line RX.

[0154] Exemplarily, the touch electrode 101 includes multiple first touch electrodes 1011 and multiple second touch electrodes 1012, the first touch electrodes 1011 include multiple first electrode patterns formed as an integrated structure, the second touch electrodes 1012 include multiple second electrode patterns arranged in sequence, and adjacent second electrode patterns are coupled by connecting bridges 1013.

[0155] Exemplarily, the first touch control electrodes 1011 include driving electrodes, and the second touch control electrodes 1012 include sensing electrodes.

[0156] Exemplarily, the sensing signal line is coupled to the corresponding second touch electrode 1012 , and the driving signal line is coupled to the corresponding first touch electrode 1011 .

[0157] Exemplarily, each first touch electrode 1011 corresponds to two drive signal lines, of which one drive signal line is respectively coupled to the first end of the corresponding first touch electrode 1011 and the touch chip, and the other drive signal line is respectively coupled to the second end of the corresponding first touch electrode 1011 and the touch chip.

[0158] For example, Figure 2 As shown, a corner portion B1 included in the driving signal line TX is illustrated.

[0159] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, at least a portion of the driving signal line TX is located between the sensing signal line RX and the touch area 10;

[0160] The touch control substrate 1 further includes a second shielding line 14 , at least a portion of which is located between the driving signal line and the sensing signal line.

[0161] Exemplarily, Exemplarily, the second shielding line 14 has a stable potential. Exemplarily, the second shielding line 14 is loaded with a GND signal.

[0162] The touch control substrate 1 is further configured to include the second shielding line 14, at least a portion of which is located between the drive signal line and the sensing signal line, so that the second shielding line 14 can effectively shield the interference between the drive signal line and the sensing signal line, thereby effectively ensuring the stability of the signal transmission between the drive signal line and the sensing signal line.

[0163] like Figure 2 As shown, in some embodiments, the touch substrate 1 also includes a third shielding line 15, and the third shielding line 15 is located on a side of the touch signal line away from the touch area. At least a portion of the third shielding line 15 extends along the boundary of the touch substrate 1, and can shield the touch signal line from external interference.

[0164] The embodiment of the present disclosure further provides a display device, comprising the touch control substrate 1 provided in the above embodiment.

[0165] In the touch substrate 1 provided in the above embodiment, by setting the width of the second part 1101b in the direction perpendicular to its own extension to be greater than the width of the first part 1101a in the direction perpendicular to its own extension, and / or the width of the second part 1101b in the direction perpendicular to its own extension is greater than the width of the third part 1101c in the direction perpendicular to its own extension, the width of the corner part at the corner where the second part 1101b is located is widened, thereby reducing the risk of disconnection of the touch signal line 110 at the corner.

[0166] When the display device provided by the embodiment of the present disclosure includes the above-mentioned touch control substrate 1, it also has the above-mentioned beneficial effects, which will not be described in detail here.

[0167] It should be noted that the display device may be any product or component with a display touch function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, or the like.

[0168] like Figure 8 and Fig. 9 As shown, in some embodiments, the display device further includes a display panel 2 , the touch substrate 1 and the display panel 2 are stacked, and the touch substrate 1 is located on the light emitting side of the display panel 2 .

[0169] Exemplarily, the display panel 2 includes an AMOLED display panel 2. Exemplarily, the display panel 2 includes a liquid crystal display panel 2.

[0170] Exemplarily, the touch control substrate 1 is disposed on a side of the encapsulation layer in the display panel 2 that is away from the display panel substrate. Exemplarily, the display panel 2 is reused as a substrate of the touch control substrate 1 as a whole.

[0171] Exemplarily, the display device includes a full-screen touch display product.

[0172] Exemplarily, the orthographic projection of the touch electrode 101 in the touch substrate 1 on the substrate 20 of the display panel 2 at least partially overlaps with the orthographic projection of the pixel defining layer in the display panel 2 on the substrate.

[0173] The display device provided in the above embodiment adopts a flexible multi-layer on cell touch structure (English: Flexible Multi-Layer On Cell, abbreviated as FMLOC).

[0174] Need to explain, such as Figure 8 and Fig. 9As shown, the display panel 2 includes a substrate 20, a driving layer 21, a first flat layer PLN1, a connecting portion 22, a second flat layer PLN2, an anode layer 24, a pixel defining layer PDL, a light emitting layer EL, a cathode layer 25, a first inorganic encapsulation layer 26, a second inorganic encapsulation layer 27 and an organic encapsulation layer 28. The touch substrate 1 includes an inorganic insulating layer 30 (i.e., a buffer layer), a touch insulating layer 31, a first touch electrode 1011, a second touch electrode 1012, a connecting bridge 1013 and a flat layer OC.

[0175] In some embodiments, the display device further includes a display panel 2 , and the touch control substrate 1 is integrated inside the display panel 2 .

[0176] Exemplarily, the substrate 20 of the display panel 2 is reused as the substrate of the touch substrate 1 , and the touch electrodes 101 and the touch signal lines 110 included in the touch substrate 1 are integrated inside the display panel 2 .

[0177] The embodiment of the present disclosure further provides a method for manufacturing a touch control substrate 1, which is used to manufacture the touch control substrate 1 provided in the above embodiment, wherein the touch control substrate 1 comprises a touch control area 10 and a peripheral area 11 surrounding the touch control area 10; the manufacturing method comprises:

[0178] Manufacturing a touch electrode 101, wherein at least a portion of the touch electrode 101 is located in the touch area 10;

[0179] Manufacturing a touch signal line 110, wherein the touch signal line 110 is coupled to the touch electrode 101, wherein at least a portion of the touch signal line 110 is located in the peripheral area 11, wherein the touch signal line 110 comprises a first compensation line segment 1101, wherein the first compensation line segment 1101 comprises at least one corner portion, wherein the corner portion comprises a first portion 1101a, a second portion 1101b, and a third portion 1101c which are sequentially connected end to end, wherein the first portion 1101a and the third portion 1101c extend in the same direction, and the second portion 1101b extends in a direction that intersects with the first portion 1101a;

[0180] The width of the second portion 1101b perpendicular to its own extension direction is greater than the width of the first portion 1101a perpendicular to its own extension direction; and / or, greater than the width of the third portion 1101c perpendicular to its own extension direction.

[0181] Exemplarily, the touch substrate 1 includes the touch area 10 and the peripheral area 11, the touch area 10 is provided with the touch electrode 101, the peripheral area 11 is provided with the touch signal line 110 and the touch chip, the touch signal line 110 is connected between the corresponding touch electrode 101 and the touch chip, and is used to transmit the signal provided by the touch chip to the corresponding touch electrode 101, and / or to transmit the signal on the corresponding touch electrode 101 to the touch chip.

[0182] Exemplarily, the touch control substrate 1 includes a self-capacitive touch control substrate 1 or a mutual-capacitive touch control substrate 1 .

[0183] For example, when the touch substrate 1 is actually used, a user touches the touch area 10 , and the touch electrodes 101 of the touch area 10 feed back the sensed signal to the touch chip, and the touch chip determines the touch position based on the received touch signal.

[0184] Exemplarily, the touch substrate 1 includes a plurality of touch electrodes 101 and a plurality of touch signal lines 110 , and at least some of the touch electrodes 101 are connected to the touch signal lines 110 in a one-to-one correspondence.

[0185] Exemplarily, the touch signal line 110 includes a first compensation line segment 1101, the first compensation line segment 1101 includes at least one corner portion, the corner portion includes the first portion 1101a, the second portion 1101b and the third portion 1101c, the second portion 1101b is located between the first portion 1101a and the third portion 1101c, and the second portion 1101b is coupled to the first portion 1101a and the third portion 1101c respectively. Exemplarily, the first compensation line segment 1101 forms a corner area at the second portion 1101b.

[0186] Exemplarily, the third portion 1101c is closer to the touch area 10 than the first portion 1101a.

[0187] Exemplarily, the touch substrate 1 includes a rectangular touch substrate 1, the touch substrate 1 includes an upper frame and a lower frame that are relatively arranged, and also includes a left frame and a right frame that are relatively arranged, and the touch chip included in the touch substrate 1 is arranged on the lower frame. Exemplarily, the extension direction of the first part 1101a and the third part 1101c is the same as the extension direction of the upper frame and the lower frame. Exemplarily, the extension direction of the first part 1101a and the third part 1101c is the same as the extension direction of the left frame and the right frame. Exemplarily, the angle a between the extension direction of the second part 1101b and the extension direction of the first part 1101a satisfies: 0°<a≤90°.

[0188] In the touch substrate 1 manufactured by the manufacturing method provided by the embodiment of the present disclosure, by setting the width of the second part 1101b in the direction perpendicular to its own extension to be greater than the width of the first part 1101a in the direction perpendicular to its own extension, and / or the width of the second part 1101b in the direction perpendicular to its own extension is greater than the width of the third part 1101c in the direction perpendicular to its own extension, the width of the corner part at the corner where the second part 1101b is located is widened, thereby reducing the risk of disconnection of the touch signal line 110 at the corner.

[0189] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the product embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiment.

[0190] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect", "couple" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0191] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0192] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0193] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A touch substrate, comprising: A touch area and a peripheral area surrounding the touch area; The touch control substrate further includes: touch control electrodes and touch control signal lines coupled to each other; At least part of the touch electrode is located in the touch area; At least part of the touch signal line is located in the peripheral area, and the touch signal line includes a first part, a second part and a third part connected end to end in sequence in the corner area, the first part and the third part have the same extension direction, and the extension direction of at least one side of the second part intersects with the extension direction of the first part; the at least one side is directly coupled to the first part and the third part respectively; The width of the second portion in a direction perpendicular to the at least one side is greater than the width of the first portion in a direction perpendicular to the first side; and / or greater than the width of the third portion in a direction perpendicular to the third side; The touch signal line includes a first conductive layer and a second conductive layer that are arranged in different layers; the first conductive layer and the second conductive layer both include the second portion, and the second portion in the first conductive layer is coupled to the second portion in the second conductive layer.

2. The touch substrate according to claim 1, wherein: The touch substrate includes a plurality of touch signal lines, each of the plurality of touch signal lines includes the first part, the second part and the third part in a corner area, and the plurality of second parts of the plurality of touch signal lines are arranged at intervals along a first direction, and the first direction intersects with an extension direction of the first part and an extension direction of at least one side of the second part.

3. The touch substrate according to claim 2, wherein: An included angle a1 between the first direction and the extending direction of the first portion satisfies: 30°≤a1≤80°.

4. The touch control substrate according to claim 2, wherein: At least one edge of the second part includes a first sub-edge and a second sub-edge arranged opposite to each other along the first direction, and the angle between the first sub-edge or the second sub-edge of the first part and the second part belonging to the same touch signal line and the angle between the first sub-edge or the second sub-edge of the third part and the second part are both obtuse angles.

5. The touch control substrate according to claim 2, wherein: The minimum interval between two adjacent second parts is greater than the interval between two adjacent first parts, and / or greater than the interval between two adjacent third parts.

6. The touch control substrate according to claim 1, wherein: The first portion and the third portion do not overlap in an extending direction of the first portion, and the first portion and the third portion do not overlap in a direction perpendicular to the extending direction of the first portion.

7. The touch control substrate according to claim 1, wherein: The third portion is closer to the touch area than the first portion.

8. The touch substrate according to claim 1, wherein: The width of the second portion on at least one side perpendicular to the second portion is 1.5 to 4 times the width of the first portion perpendicular to its own extending direction.

9. The touch control substrate according to claim 1, wherein: The touch substrate also includes a touch insulating layer arranged between the first conductive layer and the second conductive layer, the touch insulating layer includes a first via hole, an orthographic projection of the first via hole on the base of the touch substrate overlaps with an orthographic projection of the second portion of the first conductive layer on the base, and overlaps with an orthographic projection of the second portion of the second conductive layer on the base, and the second portion of the first conductive layer is coupled to the second portion of the second conductive layer through the first via hole.

10. The touch control substrate according to claim 9, wherein: An extension direction of an orthographic projection of the first via hole on the substrate is the same as an extension direction of at least one side of the second portion.

11. The touch substrate according to claim 9, wherein: In a direction perpendicular to an extending direction of at least one side of the second portion, a width of the first via hole is 0.2 to 0.5 times a width of the second portion.

12. The touch control substrate according to claim 1, wherein: The touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes include a plurality of first electrode patterns formed into an integrated structure, the second touch electrodes include a plurality of second electrode patterns arranged in sequence, and adjacent second electrode patterns are coupled via a connecting bridge; the first electrode patterns and the second electrode patterns are provided in the same layer and the same material, and the second electrode patterns and the connecting bridges are provided in different layers; The first conductive layer and the first electrode pattern are provided in the same layer and made of the same material; The second conductive layer and the connecting bridge are provided in the same layer and with the same material.

13. A touch control substrate, comprising: A touch area and a peripheral area surrounding the touch area; The touch control substrate further includes: touch control electrodes and touch control signal lines coupled to each other; At least part of the touch electrode is located in the touch area; At least part of the touch signal line is located in the peripheral area, and the touch signal line includes a first part, a second part and a third part connected in sequence in the corner area, the first part and the third part include a first edge and a third edge respectively, the second part includes a second edge, and two ends of the second edge are connected to the first edge and the third edge respectively; the extension direction of the second edge intersects with the extension direction of the first edge or the third edge; the touch signal line includes a first conductive layer and a second conductive layer arranged in different layers, and the touch substrate also includes a touch insulating layer arranged between the first conductive layer and the second conductive layer; the first conductive layer and the second conductive layer both include the second part, and the touch insulating layer includes a first via hole, and the second part in the first conductive layer is coupled to the second part in the second conductive layer through the first via hole; the orthographic projection of the first via hole on the base of the touch substrate overlaps with the orthographic projection of the second part on the base.

14. The touch control substrate according to claim 13, wherein: The width of the second portion in the extension direction perpendicular to the second edge is greater than the width of the first portion in the extension direction perpendicular to the first edge; and / or, greater than the width of the third portion in the extension direction perpendicular to the third edge.

15. The touch control substrate according to claim 13, wherein: An extending direction of an orthographic projection of the first via hole on the substrate is the same as an extending direction of at least one edge of the second portion.

16. The touch control substrate according to claim 13, wherein: The touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes include a plurality of first electrode patterns formed into an integrated structure, the second touch electrodes include a plurality of second electrode patterns arranged in sequence, and adjacent second electrode patterns are coupled via a connecting bridge; the first electrode patterns and the second electrode patterns are provided in the same layer and the same material, and the second electrode patterns and the connecting bridges are provided in different layers; The first conductive layer and the first electrode pattern are provided in the same layer and made of the same material; The second conductive layer and the connecting bridge are provided in the same layer and with the same material.

17. The touch control substrate according to claim 13, wherein: The touch substrate includes a plurality of touch signal lines, each of the plurality of touch signal lines includes the first part, the second part and the third part in a corner area, and the plurality of second parts of the plurality of touch signal lines are arranged at intervals along a first direction, and the first direction intersects with an extension direction of a first edge of the first part, an extension direction of the second edge of the second part, and an extension direction of the third edge of the third part.

18. The touch control substrate according to claim 17, wherein: The plurality of first via holes corresponding to the plurality of second portions are arranged at intervals along the first direction.

19. A display device comprising the touch control substrate according to any one of claims 13 to 18.

20. The display device according to claim 19, wherein: The display device further includes a display panel. The touch substrate is stacked with the display panel, and the touch substrate is located at a light emitting side of the display panel.

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