Touch substrate, display module and touch display device

Abstract

The present disclosure provides a touch substrate, a display module and a touch display device. The touch substrate comprises a substrate, a touch electrode layer, a conductive bridge and an electrostatic gathering structure. The touch electrode layer is located on the substrate and comprises a plurality of touch electrodes. The conductive bridge electrically connects at least partially adjacent touch electrodes. The conductive bridge comprises a bending portion and the electrostatic gathering structure is connected to the bending portion to disperse electrostatic on the bending portion. The present disclosure connects a plurality of electrostatic gathering structures to the bending portion in the conductive bridge to disperse the electrostatic concentrated on the bending portion, thereby improving the problem of the touch substrate being damaged by electrostatic.

Description

Technical Field

[0001] This disclosure relates to the field of touch technology, specifically to a touch substrate, a display module, and a touch display device. Background Technology

[0002] Touch-enabled electronic products are becoming increasingly popular in the market. The main structure used to implement touch functionality in these products is the touch substrate. During manufacturing and use, static electricity is generated on the surface of the touch substrate. However, current touch substrates are easily damaged by electrostatic discharge (ESD) due to design limitations, leading to malfunctions in the touch interface. Therefore, improving the protection of touch substrates from ESD damage has become a crucial issue that urgently needs to be addressed. Summary of the Invention

[0003] This disclosure provides a touch substrate and a touch display device. The touch substrate includes a substrate, a touch electrode layer, a conductive bridge, and multiple electrostatic accumulation structures. By connecting the multiple electrostatic accumulation structures to the bends in the conductive bridges, this disclosure can disperse the static electricity concentrated at the bends, thereby improving the problem of electrostatic discharge damage to the touch substrate when there is a large amount of static charge on it.

[0004] The touch substrate provided in the first aspect of this disclosure includes a substrate, a touch electrode layer, a conductive bridge, and a plurality of electrostatic accumulation structures. The touch electrode layer is located on the substrate and includes a plurality of touch electrodes. The conductive bridge electrically connects at least partially adjacent touch electrodes. The conductive bridge includes a bend and an electrostatic accumulation structure connected to the bend to disperse static electricity on the bend.

[0005] In the above solution, the electrostatic storage structure is used to store static charge, thereby preventing tip discharge at the bend. This method can improve the problem of electrostatic damage to the bends in the conductive bridges of the touch substrate, thus enhancing the stability and reliability of the touch substrate.

[0006] In one specific embodiment of the first aspect of this disclosure, the electrostatic accumulation structure includes at least one tip, the sharpness of which is not less than the sharpness of the bend.

[0007] In the above scheme, due to the principle of tip discharge, static charge will preferentially concentrate in the electrostatic accumulation structure with greater sharpness. Therefore, connecting the electrostatic accumulation structure including a second tip with greater sharpness to the bending part can protect the bending part and improve the problem that the bending part is easily damaged by electrostatic discharge.

[0008] In one specific embodiment of the first aspect of this disclosure, the electrostatic accumulation structure includes at least one radiating portion, with a discharge tip formed at one end of the radiating portion away from the bent portion.

[0009] For example, the shape of the radial section is linear.

[0010] For example, in the same electrostatic aggregation structure, the number of radiating parts is at least three, and the spacing between adjacent radiating parts is equal.

[0011] In one specific embodiment of the first aspect of this disclosure, one end of the radiating portion is connected to the bending portion, and the other end of the radiating portion extends radially away from the bending portion; or the electrostatic accumulation structure further includes at least one main body portion, the main body portion is connected to the bending portion, one end of the radiating portion is connected to the main body portion, and the other end of the radiating portion extends radially away from the main body portion.

[0012] For example, the radiating part is located on the side of the main body away from the bending part.

[0013] In one specific embodiment of the first aspect of this disclosure, the electrostatic accumulation structure includes at least one main body portion, the main body portion including at least one tip, the sharpness of the tip being greater than the sharpness of the bend portion.

[0014] In one specific embodiment of the first aspect of this disclosure, the main body is configured as a wire, with both ends of the wire connected to the bending portion to form an opening with the bending portion; or, the main body is configured as a conductive block, with one edge of the conductive block spliced ​​to the bending portion.

[0015] For example, the main body is made of transparent material.

[0016] In one specific embodiment of the first aspect of this disclosure, the electrostatic aggregation structure and the conductive bridge are in the same layer and made of the same material.

[0017] The second aspect of this disclosure provides a display module, which includes a display substrate and a touch substrate provided in the first aspect, which are stacked together. The display substrate includes a plurality of sub-pixels, and there is a gap region between two adjacent sub-pixels. The orthogonal projection of a conductive bridge on the display substrate is located in the gap region.

[0018] In one embodiment of the second aspect of this disclosure, the conductive bridge includes at least one connecting line, the edge of the sub-pixel has a corner, and the connecting line is formed into a bend near the corner.

[0019] For example, the bend can be curved.

[0020] A third aspect of this disclosure provides a touch display device, which may include the touch substrate described in the first aspect above. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a planar structure of a touch substrate provided in an embodiment of the present disclosure.

[0022] Figure 2This is a partial cross-sectional schematic diagram of a substrate for a touch board provided in an embodiment of the present disclosure.

[0023] Figure 3 for Figure 1 An enlarged schematic diagram of region S1 of the touch substrate shown.

[0024] Figure 4 for Figure 2 The diagram shows a cross-sectional view of the touch substrate along AA.

[0025] Figure 5 for Figure 3 An enlarged schematic diagram of region S3 of the touch substrate shown.

[0026] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the touch substrate along BB.

[0027] Figure 7 for Figure 3 An enlarged schematic diagram of region S4 on the touch substrate shown.

[0028] Figure 8 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0029] Figure 9 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0030] Figure 10 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0031] Figure 11 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0032] Figure 12 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0033] Figure 13 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0034] Figure 14 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0035] Figure 15 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0036] Figure 16This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0037] Figure 17 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure.

[0038] Figure 18 This is a schematic planar structure diagram of an electrostatic accumulation structure of a touch substrate provided in an embodiment of the present disclosure. Detailed Implementation

[0039] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0040] During the manufacturing process of touch substrates, a protective film is applied to their surface. Removing this film generates a large amount of static charge on the substrate surface, leading to electrostatic discharge (ESD). ESD occurs when objects with different electrostatic potentials approach or come into direct contact, causing charge transfer. Touch substrates typically employ a metal mesh structure. ESD on the touch substrate surface generates high voltage, a strong electric field, and a large instantaneous current, damaging the connecting wires that make up the metal mesh. This is especially true at the corners of the connecting wires in the conductive bridges, where the sharpness and increased electric field intensity make them more susceptible to tip discharge, resulting in damage and abnormal touch functionality. Furthermore, friction between fingers and the screen during use also generates static electricity, further damaging the connecting wires in the touch substrate.

[0041] In view of this, embodiments of the present disclosure provide a touch substrate, which includes a substrate touch electrode layer, a conductive bridge, and multiple electrostatic accumulation structures. The touch electrode layer is located on the substrate and includes multiple touch electrodes. Specifically, the touch electrodes may be multiple parallel first electrodes and multiple parallel second electrodes, with the first and second electrodes intersecting. The first electrodes break at the intersection to form multiple first sub-electrodes. The conductive bridge is located at the intersection of the first and second electrodes to connect adjacent first sub-electrodes; that is, at least partially adjacent touch electrodes are electrically connected through the conductive bridge. The conductive bridge includes a bend. Multiple electrostatic accumulation structures are respectively connected to the bend. In this solution, by connecting multiple electrostatic accumulation structures to the bend in the conductive bridge, the static electricity concentrated at the bend can be dispersed, thereby improving the problem of electrostatic discharge on the touch substrate when there is a large amount of static charge. Static charge is stored through an electrostatic storage unit to disperse static electricity on the bend, thereby preventing tip discharge at the corners of the connecting lines. This method can improve the problem of electrostatic discharge damage to the bent parts of the conductive bridges in the touch substrate, thereby enhancing the stability and reliability of the touch substrate.

[0042] The touch substrate and display device according to at least one embodiment of the present disclosure will now be described with reference to the accompanying drawings. Furthermore, as shown in the drawings, in at least one embodiment of the present disclosure, a spatial Cartesian coordinate system is established with the surface of the touch substrate as a reference to define the positions of various components in the touch substrate and even the electronic device. In this spatial Cartesian coordinate system, the X-axis and Y-axis are parallel to the surface of the touch substrate, and the Z-axis is perpendicular to the surface of the touch substrate.

[0043] In at least one embodiment of this disclosure, such as Figures 1 to 7 As shown, the touch substrate 100 includes a substrate 110, a touch electrode layer 120, a conductive bridge 130, and a plurality of electrostatic accumulation structures 150.

[0044] Specifically, the substrate 110 can be a display substrate. The display substrate can be an organic light-emitting diode (OLED) display panel, a liquid crystal display (LCD) display panel, or an electronic paper display panel, etc.

[0045] For example, taking an OLED display substrate as an example, this display substrate includes organic light-emitting diodes (OLEDs) and thin-film transistors (TFTs). The OLEDs form the physical light-emitting structure of sub-pixels 111 in the flexible display substrate, and the TFTs serve as the switching elements of the sub-pixels 111. An organic light-emitting diode is a device that generates electroluminescence using a multilayer organic thin-film structure. Specifically, an organic light-emitting diode may include an anode layer 1111, a light-emitting functional layer 1112, and a cathode layer 1113 stacked sequentially. The light-emitting functional layer 1112 includes at least a light-emitting layer; optionally, it may also include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer. Under the influence of an electric field, holes generated in the anode layer and electrons generated in the cathode layer migrate to the light-emitting layer. When holes and electrons meet in the light-emitting layer, energy excitons are generated, thereby exciting the light-emitting molecules in the light-emitting layer to ultimately produce visible light.

[0046] like Figures 1-4 As shown, the touch substrate 100 includes a touch functional area 11 and a border area 12 surrounding the touch functional area 11. The touch electrode layer 120 is located on the substrate 110 and within the touch functional area 11. The touch electrode layer 120 includes a plurality of touch electrodes. Exemplarily, the plurality of touch electrodes may be a plurality of first electrodes 121 arranged in parallel and a plurality of second electrodes 122 arranged in parallel. The first electrodes 121 and the second electrodes 122 intersect to form a touch capacitor (equivalent to a touch unit S2) at the intersection.

[0047] The boundary of the touch unit S2 can be defined according to the sensing area of ​​the touch capacitor. In the embodiments of this disclosure, one of the first electrode 121 and the second electrode 122 can be a driving electrode, and the other of the first electrode 121 and the second electrode 122 can be a sensing electrode. The area where the driving electrode and the sensing electrode intersect can form a touch capacitor. When a scanning signal is applied to the driving electrode, if the user's finger approaches the intersection point, a parasitic capacitance will be formed between the driving electrode or the sensing electrode and the user's finger. This parasitic capacitance will cause the voltage of the touch capacitor to fluctuate, that is, the capacitance value of the touch capacitor formed at the intersection point of the driving electrode and the sensing electrode will change. By detecting the sensing electrode where the voltage changes, the position of the touch capacitor with the changed capacitance value can be determined, that is, the touch position can be located, thereby realizing touch control.

[0048] It should be noted that when dividing the touch units S2 in the touch substrate 100, the entire touch functional area 11 is usually divided into multiple touch units S2. The division of the touch unit S2 is actually a definition of the sensing area. For example, the touch unit S2 to which an area belongs can be determined based on the touch sensitivity of that area. For example, in an area between adjacent first and second touch capacitors, if the rate of change of the capacitance value of the first touch capacitor is greater than the rate of change of the capacitance value of the second touch capacitor when touched (e.g., when a user's finger approaches), then that area can be classified as the touch unit S2 corresponding to the first touch capacitor. Thus, the boundary of the touch unit S2 may actually be larger than the area occupied by the touch capacitor. Those skilled in the art should know that the detection range of a capacitor is usually larger than the area occupied by the touch capacitor. Therefore, even the area around the capacitor can still be considered as the detection area of ​​the touch capacitor. That is, the capacitor and some surrounding areas can be defined as a touch unit S2.

[0049] In at least one embodiment of this disclosure, at least some adjacent touch electrodes are electrically connected via a conductive bridge, exemplarily, such as... Figure 3 and Figure 4 As shown, the first electrode 121 is broken into multiple first sub-electrodes 1211 in the region where it intersects with the second electrode 122. The conductive bridge 130 is located at the intersection of the first electrode 121 and the second electrode 122 to connect adjacent first sub-electrodes 1211.

[0050] Optionally, the touch substrate 100 further includes an insulating layer 140, which is located on the side of the touch electrode layer 120 away from the substrate 110 and covers the first electrode 121 and the second electrode 122. The touch electrode layer 120 also includes a conductive bridge 130 located on the side of the insulating layer 140 away from the first electrode 121 and the second electrode 122. The insulating layer 140 is provided with a through hole, and the conductive bridge 130 is connected to the first sub-electrode through the through hole.

[0051] Alternatively, in another embodiment, the insulating layer 140 is located between the touch electrode layer 120 and the substrate 110, and a through hole is provided in the insulating layer 140. The conductive bridge 130 is disposed on the side of the insulating layer 140 away from the touch electrode layer 120 and is connected to the first sub-electrode 1211 through the through hole.

[0052] In the embodiments of this disclosure, the material of the touch electrode layer 120 is not limited. For example, the first electrode 121, the second electrode 122, and the conductive bridge 130 can be single-layer structures or multilayer structures. For example, the multilayer structure is a Ti-Al-Ti, Mo-Al-Mo, or ITO-Ag-ITO multilayer structure. Exemplarily, the Ti-Al-Ti multilayer structure is a multilayer formed by sequentially stacking three film layers, namely a Ti film layer, an Al film layer, and a Ti film layer.

[0053] In at least one embodiment of this disclosure, such as Figure 5 and Figure 6 As shown, when the substrate 110 is a display substrate, in order not to affect the display effect, the first electrode 121 and the second electrode 122 in the touch electrode layer 120 can be set as a grid, and the opening of the grid corresponds to the sub-pixel 111.

[0054] like Figure 7 As shown, since there are two layers of connecting lines 131 at the overlapping position of the conductive bridge 130 and the second electrode 122, in order to ensure a uniform density of connecting lines throughout the touch area and avoid a significant difference in display effect between the location of the conductive bridge 130 and the location without the conductive bridge 130, the total area of ​​the connecting lines 131 in the conductive bridge 130 needs to be minimized. Therefore, the shape of the connecting lines in the conductive bridge 130 is different from the shape of the connecting lines in the touch electrode layer 120. For example, the line width of the connecting lines in the conductive bridge 130 can be 4-6 μm. The two ends of the connecting lines 131 in the conductive bridge 130 are used to connect two adjacent first sub-electrodes 1211.

[0055] For example, such as Figure 3 , Figure 7 and Figure 8 As shown, the conductive bridge 130 includes multiple connecting lines 131, and the total length of the portion of the connecting lines 131 along the Y-axis should be as small as possible. To avoid the sub-pixel 111, the multiple connecting lines 131 of the conductive bridge 130 can be configured as curves. For example, the connecting lines 131 can avoid the area of ​​the sub-pixel 111 in the form of a broken line, thereby creating multiple bends 132. In the connecting line 131, the bend 132 actually forms a sharp point (first sharp point 133), which easily accumulates static electricity. Exemplarily, when the bend 132 is a right angle, the bend 132 can be a pattern composed of two line segments extending a certain distance from the vertex of the right angle to the two sides of the right angle, with the first sharp point 133 of the bend 132 being the vertex of the right angle.

[0056] In at least one embodiment of this disclosure, the conductive bridge 130 includes a bend 132, and a plurality of electrostatic accumulation structures 150 are electrically connected to the bend 132. By providing electrostatic accumulation structures electrically connected to the bend 132, the static charge at the bend 132 can be dispersed to improve the point discharge phenomenon that occurs at the first tip 133 of the bend 132.

[0057] In at least one embodiment of this disclosure, the electrostatic accumulation structure 150 includes at least one second tip 153 for distributing the static charge accumulated at the location of the first tip 133 in the bend 132. Optionally, the sharpness of the second tip 153 in the electrostatic accumulation structure 150 is not less than the sharpness of the first tip 133 in the bend 132. Due to the principle of tip discharge, static charge will preferentially concentrate in the second tip 153 of the electrostatic accumulation structure 150 with greater sharpness. Therefore, providing an electrostatic accumulation structure 150 including a second tip 153 with greater sharpness in the bend 132 can protect the bend 132 and improve the problem of the bend 132 being easily damaged by electrostatic discharge. It should be noted that the second tip 153 in the electrostatic accumulation structure 150 refers to a location with high sharpness, such as the tip of a sharp, fine material. Sharpness refers to the degree of sharpness of the tip. When the tip is a right angle or an acute angle, the smaller the angle of the angle, the greater the sharpness of the tip. When the tip is curved, the greater the curvature of the curve, the greater the sharpness of the tip.

[0058] The presence of at least one second tip 153 in the electrostatic accumulation structure 150 can alleviate the problem of the bending portion 132 being easily damaged by electrostatic discharge. In order to further improve the electrostatic storage effect of the electrostatic accumulation structure 150, multiple second tips 153 can be provided in the electrostatic accumulation structure 150. By increasing the number of second tips 153, the static charge is preferentially distributed in each second tip 153. This method can reduce the negative impact of tip discharge on the first tip 133 in the bending portion 132. Figures 8 to 18 They are respectively Figure 7 An enlarged schematic diagram of region S5 of the conductive bridge shown below. Figures 8 to 18 Various implementations of the electrostatic aggregation structure 150 are described.

[0059] In at least one embodiment of this disclosure, the radiating portion extends radially away from the bending portion, one end of the radiating portion is connected to the bending portion, and the other end of the radiating portion extends radially away from the bending portion. That is, the electrostatic accumulation structure 150 includes at least one radiating portion 151, which is directly connected to the bending portion 132. The radiating portion 151 is linear, and at the end of the radiating portion 151 not connected to the bending portion 132, its sharpness is very high. Therefore, the end of the radiating portion 151 not connected to the bending portion 132 is the second tip 153 of the electrostatic accumulation structure, and static electricity will preferentially concentrate at the end of the radiating portion 151 not connected to the bending portion 132. Specifically, the radiating portion 151 and the bending portion 132 can have various relative positional relationships. The following describes... Figures 8-10 The various relative positional relationships between the radiating part 151 and the bending part 132 are explained.

[0060] For example, such as Figure 8As shown, five radial portions 151 are arranged on a bend 132. The radial portions 151 are linear in shape and extend radially toward one side of the back-ion pixel 111 of the bend 132. Since the space on one side of the back-ion pixel 111 of the bend 132 is larger, the radial extension of the radial portions 151 toward one side of the back-ion pixel 111 of the bend 132 allows the radial portions 151 to be more dispersed. For example, as... Figure 9 As shown, the radial portion 151 may also extend toward the side of the bent portion 132 toward the sub-pixel 111. For example, as... Figure 10 As shown, the radiating portion 151 can also be respectively disposed on the side of the bent portion 132 facing the sub-pixel 111 and on the side of the bent portion 132 facing the sub-pixel 111. It should be noted that the sub-pixel 111 is the sub-pixel 111 corresponding to the bent portion 132. For example, when the bent portion 132 is a right angle, the sub-pixel 111 is located between the two right-angled sides of the right angle.

[0061] The length of the radiating portion 151 is preferably such that it does not block the area where the sub-pixel is located, so that the electrostatic accumulation structure 150 can improve the damage of the bending portion 132 without affecting the display effect of the display substrate.

[0062] Optionally, such as Figures 8-10 As shown, in the same electrostatic accumulation structure 150, the number of radiating portions 151 is at least three, and the spacing between adjacent radiating portions 151 is equal. Equal spacing between the radiating portions 151 allows for a more uniform distribution of static charge across the multiple radiating portions 151. The more radiating portions 151 there are, the less static charge is distributed across each radiating portion 151, resulting in less static charge on the bent portion 132 and a smaller negative effect of tip discharge on the bent portion 132. The number of radiating portions 151 can be adaptively adjusted according to design requirements.

[0063] In at least one embodiment of this disclosure, the electrostatic accumulation structure 150 may include at least one main body portion 152. The main body portion 152 is a conductive pattern including at least one tip. Taking a zigzag line where both ends of the main body portion 152 are connected to the bend portion 132 as an example, the main body portion 152 can have various shapes, which are described below in conjunction with... Figures 11-14 The various implementation methods of the main body 152 are explained.

[0064] In at least one embodiment of this disclosure, the main body 152 is configured as a wire, with both ends of the wire connected to the bend 132 to form an opening with the bend 132. Further, the first tip 133 of the main body 152 is located between the two connection points of the main body 152 and the bend 132. The main body 152 can be made of a non-transparent conductive material or a transparent conductive material.

[0065] For example, the main body portion 152 is disposed on one side of the back ion pixel 111 of the bent portion 132. Figure 11 As shown, the main body 152 includes three right angles, that is, the main body 152 includes three second tips 153 with substantially the same sharpness as the first tip 133 of the bent portion 132. Figure 12 As shown, the main body 152 includes five right angles, that is, the main body 152 includes five second tips 153 with substantially the same sharpness as the first tip 133 of the bent portion 132. Figure 13 As shown, the main body 152 includes four acute angles, that is, the main body 152 includes four second tips 153 with a sharpness less than that of the first tip 133 of the bent portion 132.

[0066] For example, the main body portion 152 is disposed on one side of the back ion pixel 111 of the bent portion 132. Figure 14 As shown, the main body 152 includes a right angle, that is, the main body 152 includes a second tip 153 with a sharpness substantially the same as the first tip of the bent portion 132.

[0067] In at least one embodiment of this disclosure, in order to increase the number of second tips 153 in the electrostatic accumulation structure 150, the electrostatic accumulation structure 150 may also include at least one main body portion 152 and at least one radiating portion 151, as described below. Figures 15-17 The various relative positional relationships between the radiating part 151 and the bending part 132 are explained.

[0068] For example, such as Figure 15 As shown, the main body 152 is connected to the bent portion 132, and the radial portion 151 is connected to the main body 152. Optionally, the radial portion 151 is located on the side of the main body 152 away from the bent portion 132, or it can be located on the side of the main body 152 facing the bent portion 132. Due to the presence of the main body 152, the radial portion 151 can be arranged on the main body 152 instead of the bent portion 132. The area of ​​the main body 152 is larger than that of the bent portion 132, which allows for an increase in the number of radial portions 151 without increasing the spacing between them. This avoids the situation where the spacing between adjacent radial portions is too small, which would make the manufacturing of the mask used to form the electrostatic accumulation structure 150 too difficult, thereby reducing production costs.

[0069] Optionally, the main body 152 includes at least one second tip 153. The sharpness of the second tip 153 of the main body 152 is substantially the same as the sharpness of the first tip 133 of the bent portion 132. The second tip can serve to distribute the charge in the bent portion 132. The presence of the main body 152 indirectly increases the number of radiating portions 151 that the bent portion 132 can accommodate. This method is beneficial for better distribution of charge, thereby reducing the risk of discharge at the tip of the bent portion 132.

[0070] For example, such as Figure 16 As shown, the electrostatic accumulation structure 150 may further include two main body portions 152 and multiple radiating portions 151. Some of the radiating portions 151 are connected to the main body portions 152, and some of the radiating portions 151 are connected to the bent portions 132. This arrangement results in a large number of sharp points in the electrostatic accumulation structure 150, which is beneficial for better charge distribution.

[0071] In at least one embodiment of this disclosure, the main body 152 is made of a transparent conductive material, and the main body 152 is configured as a conductive block 154, with one side edge of the conductive block 154 connected to the bent portion 132.

[0072] For example, such as Figure 17 As shown, the main body 152 is a conductive block 154, and the radial portion 151 is connected to the tip of the conductive block 154. The area of ​​the conductive block 154 is larger than the area of ​​the wire, which can reduce the static charge per unit area. Connecting the radial portion 151 to the top of the conductive block 154 can further reduce the static charge per unit area in the static accumulation structure, and make the static charge stored in the radial portion 151 away from the bending portion 132. This method can improve the risk of the bending portion 132 being easily damaged by impact.

[0073] For example, such as Figure 18 As shown, the bend 132 can be arc-shaped, which reduces the sharpness of the first tip 133 of the bend 132, allowing static charge to be preferentially stored in the electrostatic accumulation structure 150, which includes a second tip 153 with greater sharpness. Optionally, the linewidth of the arc-shaped bend 132 can be 4–6 μm, and the radius of curvature of the arc angle can be 8–12 μm.

[0074] In at least one embodiment of this disclosure, the electrostatic aggregation structure 150 and the conductive bridge 130 are made of the same layer and the same material. Since the electrostatic aggregation structure 150 and the conductive bridge 130 are made of the same layer and the same material, they can be formed in the same process, which can improve production efficiency.

[0075] It should be noted that the electrostatic accumulation structure 150 may not be on the same layer as the conductive bridge 130. For example, the electrostatic accumulation structure 150 can be connected through through holes and bends 132.

[0076] It should be noted that the static electricity in the static accumulation structure will be discharged after the touch substrate is grounded.

[0077] At least one embodiment of this disclosure provides a touch display device, which includes the touch substrate 100 provided in the above embodiments.

[0078] The touch display device can also be any of various types of computer system devices that are mobile or portable and perform wireless communication. In some cases, the touch display device can perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). Specifically, the display device can be any product or component with display capabilities, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator.

[0079] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Any modifications or equivalent substitutions made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A touch substrate, characterized in that, include: Base; A touch electrode layer, located on the substrate, includes multiple touch electrodes; A conductive bridge is provided, through which at least partially adjacent touch electrodes are electrically connected. The conductive bridge includes multiple connecting lines arranged in a zigzag pattern to avoid areas of sub-pixels. The two ends of each connecting line are used to connect at least partially adjacent touch electrodes. The conductive bridge includes a bend formed at the angle of the connecting line, located in the area between adjacent sub-pixels. An electrostatic accumulation structure is connected to the bent portion to disperse static electricity on the bent portion. The electrostatic accumulation structure includes at least one radiating portion, which is directly connected to the bent portion. One end of the radiating portion away from the bent portion forms a discharge tip. The shape of the radiating portion is linear, and the radiating portion is located in the region between adjacent sub-pixels. The sub-pixels are provided in multiples, and two adjacent sub-pixels arranged along the X-axis direction are at least partially staggered in the Y-axis direction. The X-axis direction and the Y-axis direction are perpendicular, and the connecting line between two adjacent sub-pixels in the X-axis direction includes two bends.

2. The touch substrate according to claim 1, characterized in that, The electrostatic accumulation structure includes at least one tip, the sharpness of which is not less than the sharpness of the bend.

3. The touch substrate according to claim 1, characterized in that, In the same electrostatic aggregation structure, the number of radiating parts is at least three, and the spacing between adjacent radiating parts is equal.

4. The touch substrate according to claim 3, characterized in that, One end of the radiating portion is connected to the bent portion, and the other end of the radiating portion extends radially away from the bent portion; or The electrostatic accumulation structure further includes at least one main body portion connected to the bent portion, one end of the radiating portion connected to the main body portion, and the other end of the radiating portion extending radially away from the main body portion.

5. The touch substrate according to claim 4, characterized in that, The radiating part is located on the side of the main body away from the bent part.

6. The touch substrate according to claim 1, characterized in that, The electrostatic accumulation structure includes at least one main body portion, the main body portion including at least one tip, the sharpness of the tip being greater than that of the bend portion.

7. The touch substrate according to any one of claims 4-6, characterized in that, The main body is configured as a conductor, with both ends of the conductor connected to the bending portion to form an opening with the bending portion; or, the main body is configured as a conductive block, with one edge of the conductive block spliced ​​to the bending portion.

8. The touch substrate according to claim 7, characterized in that, The main body is made of a transparent material.

9. The touch substrate according to any one of claims 1-6, characterized in that, The electrostatic aggregation structure is in the same layer and made of the same material as the conductive bridge.

10. A display module, characterized in that, The invention includes a display substrate and a touch substrate as described in any one of claims 1-9, wherein the display substrate includes a plurality of sub-pixels, a gap region is provided between two adjacent sub-pixels, and the orthogonal projection of the conductive bridge on the display substrate is located within the gap region.

11. A display module according to claim 10, characterized in that, The conductive bridge includes at least one connecting line, the edge of the sub-pixel has a corner, and the connecting line near the corner forms the bend.

12. A display module according to claim 11, characterized in that, The bent portion is arc-shaped.

13. A touch display device, characterized in that, Includes the display module as described in any one of claims 10-12.

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