Touch display panel, display device and preparation method thereof

Abstract

The disclosure provides a touch display panel, a display device and a preparation method thereof, and belongs to the technical field of display. The touch display panel comprises a display substrate (10) and a touch layer (20). The touch layer (20) comprises a plurality of touch units (210) and a plurality of touch lines (220) on the display substrate (10). The touch line (220) is connected with at least one touch unit (210), and the touch line (220) is used for electrically connecting the connected touch unit (210) with a touch integrated circuit (30). The plurality of touch lines (220) at least comprises a first wire (221) and a second wire (222) located in a non-display area (102). The length of the first wire (221) is greater than the length of the second wire (222), and the cross-sectional area of the first wire (221) is greater than the cross-sectional area of the second wire (222). The uniformity of the signal transmission of the touch line can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a touch display panel, a display device, and a method for manufacturing the same. Background Technology

[0002] A touch display panel is a display device with touch and display functions, and it is widely used in various electronic products.

[0003] A touch display panel typically includes a display substrate and a touch layer located on the display substrate. The touch layer includes multiple touch units and multiple touch lines connected to the touch units. The touch lines usually need to be led out to one side of the display substrate to connect with the touch integrated circuit. To avoid the touch lines affecting the display effect of the panel, the touch lines need to extend along the non-display area of ​​the display substrate to the side of the display substrate. Summary of the Invention

[0004] This disclosure provides a touch display panel, a display device, and a method for manufacturing the same, which can improve the uniformity of signals transmitted via touch lines. The technical solution is as follows:

[0005] This disclosure provides a touch display panel, which includes a display substrate and a touch layer. The display substrate has a display area and a non-display area surrounding the display area. The touch layer includes a plurality of touch units and a plurality of touch lines. The plurality of touch units are arrayed on the display substrate and are at least partially located in the display area. The plurality of touch lines are located on the display substrate and are connected to at least one of the touch units. The touch lines are used to electrically connect the connected touch units to a touch integrated circuit. The plurality of touch lines include at least a first trace and a second trace located in the non-display area. The length of the first trace is greater than the length of the second trace, and the cross-sectional area of ​​the first trace is greater than the cross-sectional area of ​​the second trace.

[0006] In one implementation of this disclosure, the ratio of the cross-sectional area of ​​the first trace to the cross-sectional area of ​​the second trace is a first ratio, the ratio of the length of the first trace to the length of the second trace is a second ratio, and the ratio of the first ratio to the second ratio is 0.95 to 1.05.

[0007] In another implementation of the present disclosure, the display substrate includes a conductive layer located in the non-display area; the conductive layer has at least one first through-hole and at least one second through-hole, the first through-hole being located within the orthographic projection of the first trace on the conductive layer, the second through-hole being located within the orthographic projection of the second trace on the conductive layer, and the total opening area of ​​the first through-hole per unit area on the first trace being greater than the total opening area of ​​the second through-hole per unit area on the second trace.

[0008] In another implementation of this disclosure, the ratio of the total opening area of ​​the first through holes on the first trace per unit area to the total opening area of ​​the second through holes on the second trace per unit area is equal to the ratio of the cross-sectional area of ​​the first trace to the cross-sectional area of ​​the second trace.

[0009] In another implementation of this disclosure, the product of the capacitance between the first trace and the conductive layer and the resistance of the first trace is a first load value, the product of the capacitance between the second trace and the conductive layer and the resistance of the second trace is a second load value, and the ratio of the first load value to the second load value is 0.95 to 1.05.

[0010] In another implementation of the present disclosure, the conductive layer has a plurality of first through holes and a plurality of second through holes, the plurality of first through holes and the plurality of second through holes are arranged in an array, the number of first through holes and the number of second through holes are the same, the opening area of ​​each first through hole is different from the opening area of ​​each second through hole, and the sum of the opening areas of each first through hole is greater than the sum of the opening areas of the second through holes.

[0011] In another implementation of the present disclosure, the conductive layer has a plurality of first through holes and a plurality of second through holes, the plurality of first through holes and the plurality of second through holes are arranged in an array, the opening area of ​​each first through hole is the same as the opening area of ​​each second through hole, and the number of first through holes and the number of second through holes are different, and the sum of the opening areas of each first through hole is greater than the sum of the opening areas of the second through holes.

[0012] In another implementation of the present disclosure, the first through hole is a polygon, a circle, an ellipse, or an irregular closed shape, and the second through hole is a polygon, a circle, an ellipse, or an irregular closed shape.

[0013] In another implementation of the present disclosure, the shape of the first through hole is the same as or different from the shape of the second through hole.

[0014] In another implementation of the present disclosure, the display substrate further includes a plurality of light-emitting units located in the display area. Each light-emitting unit includes an anode layer, a light-emitting layer, and a cathode layer stacked sequentially, wherein the anode layer or the cathode layer is on the same layer as the conductive layer.

[0015] In another implementation of the present disclosure, the anode layer and the conductive layer are on the same layer, and the orthographic projection of the cathode layer on the anode layer is outside the orthographic projection of the second trace on the anode layer.

[0016] In another implementation of the present disclosure, the display substrate further includes a power signal line located in the non-display area, and the conductive layer is connected to the power signal line and the cathode layer respectively.

[0017] In another implementation of this disclosure, the touch layer further includes multiple parallel first connecting lines and multiple parallel second connecting lines, the first connecting lines and the second connecting lines being located in the display area; the multiple touch units are divided into multiple first touch unit groups and multiple second touch unit groups, the first touch unit group includes multiple touch units located in the same row, the multiple touch units in the first touch unit group are connected by at least one first connecting line and connected to at least one touch line, and the touch lines connected to the multiple touch units in different first touch unit groups are different; the second touch unit group includes multiple touch units located in the same column, the multiple touch units in the second touch unit group are connected by at least one second connecting line and connected to one touch line, and the touch lines connected to the multiple touch units in different second touch unit groups are different.

[0018] In another implementation of the present disclosure, the touch unit is a transparent conductive layer or a metal mesh structure.

[0019] In another implementation of this disclosure, the touch display panel further includes two touch integrated circuits. The first touch unit group is connected to the two touch integrated circuits via two touch lines located outside the display area, and the second touch unit group is connected to at least one touch integrated circuit via at least one touch line located outside the display area.

[0020] In another implementation of this disclosure, the touch display panel further includes a touch integrated circuit, and the first touch unit group and the second touch unit group are respectively connected to the touch integrated circuit through a touch line located outside the display area.

[0021] In another implementation of the present disclosure, the display substrate includes an array substrate and a plurality of light-emitting units, the plurality of light-emitting units being arrayed on the array substrate; the array substrate includes a substrate and a plurality of driving circuits, the plurality of driving circuits being arrayed on the substrate; the driving circuits are connected to at least one corresponding light-emitting unit.

[0022] In another implementation of the present disclosure, all of the multiple touch lines are single-layer structures, and two adjacent touch lines are on different layers; or, at least some of the touch lines include a first sub-layer and a second sub-layer located on different layers, the orthographic projections of the first sub-layer and the second sub-layer on the display substrate at least partially overlap, and the first sub-layer and the second sub-layer are connected by at least one via.

[0023] This disclosure provides a display device, which includes a touch display panel and a power supply component as described above, wherein the power supply component is electrically connected to the touch display panel.

[0024] This disclosure provides a method for fabricating a touch display panel. The method includes: providing a display substrate having a display area and a non-display area surrounding the display area; forming a plurality of touch units and a plurality of touch lines on the display substrate to form a touch layer, wherein the plurality of touch units are arrayed on the display substrate and located in the display area; the plurality of touch lines are located on the display substrate, the touch lines are connected to at least one of the touch units, and the touch lines are used to connect to a touch integrated circuit; the plurality of touch lines include at least a first trace and a second trace located in the non-display area, the length of the first trace is greater than the length of the second trace, and the cross-sectional area of ​​the first trace is greater than the cross-sectional area of ​​the second trace.

[0025] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0026] The touch display panel provided in this disclosure has touch lines extending to the edge of the display substrate, and the touch lines include a first trace and a second trace located in the non-display area of ​​the display panel. Since the longer the touch line, the greater its resistance, the cross-sectional area of ​​the longer first trace is set to be larger than that of the shorter second trace. This reduces the resistance of the longer touch line, alleviating the problem of increased resistance caused by its greater length, and making the resistance of different traces more consistent, thereby improving the uniformity of the signal transmitted by the touch line. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a plan view of a touch display panel provided in an embodiment of this disclosure;

[0029] Figure 2 yes Figure 1 A cross-sectional view (AA) of a touch display panel is provided.

[0030] Figure 3 This is a schematic diagram of the hierarchical structure of a touch line provided in an embodiment of this disclosure;

[0031] Figure 4 This is a schematic diagram of the hierarchical structure of another touch line provided in this embodiment of the present disclosure;

[0032] Figure 5 This is a BB cross-sectional view of a touch display panel;

[0033] Figure 6 yes Figure 1 A plan view of the X region of a touch display panel is provided;

[0034] Figure 7 This is a schematic diagram of the distribution of vias on a conductive layer provided in an embodiment of this disclosure;

[0035] Figure 8 This is a schematic diagram of the hierarchy of a touch display panel provided in an embodiment of this disclosure;

[0036] Figure 9 This is a flowchart of a method for manufacturing a touch display panel according to an embodiment of this disclosure.

[0037] The markings in the diagram are explained as follows:

[0038] 10. Display substrate; 101. Display area; 102. Non-display area; 103. Gate driving circuit; 104. Planarization layer; 105. Encapsulation layer; 106. Metal layer; 107. Dam structure; 108. Crack barrier structure;

[0039] 110. Light-emitting unit; 111. Conductive layer; 1121. First through-hole; 1122. Second through-hole; 113. Anode layer; 114. Light-emitting layer; 115. Cathode layer; 116. Pixel defining layer;

[0040] 120. Array substrate; 121. Substrate substrate; 122. Active layer; 123. Gate insulating layer; 124. Gate layer; 125. Interlayer dielectric layer; 126. Source-drain layer;

[0041] 20. Touch layer;

[0042] 210. Touch unit; 211. Insulating layer; 212. Conductive structure; M. First touch unit group; N. Second touch unit group;

[0043] 220. Touch line; 221. First trace; 222. Second trace; 223. First connecting line; 224. Second connecting line; 2251. First sub-layer; 2252. Second sub-layer; 226. Via;

[0044] 30. Touch integrated circuit. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0046] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” “top,” and “bottom,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0047] In related technologies, different touch units are distributed in different positions and at different distances from the side where the touch integrated circuit is located. As a result, the lengths of the touch lines connected to different touch units are different, which leads to different resistances and capacitances for different touch lines. This affects the uniformity of the signals transmitted by the touch lines and reduces the touch accuracy.

[0048] To improve the uniformity of signals transmitted through the touch line, this disclosure provides a touch display panel. Figure 1This is a plan view of a touch display panel provided in an embodiment of this disclosure. Figure 1 As shown, the touch display panel includes a display substrate 10 and a touch layer 20. The touch layer 20 is located on the display substrate 10.

[0049] The display substrate 10 has a display area 101 and a non-display area 102 surrounding the display area 101. The display area 101 includes multiple pixels, and images are displayed by controlling the emission of light from the multiple pixels.

[0050] The touch layer 20 includes a plurality of touch units 210 and a plurality of touch lines 220. The plurality of touch units 210 are arrayed on the display substrate 10 and are at least partially located in the display area 101. In one embodiment, all touch units 210 are located in the display area 101. In another embodiment, some touch units 210 are located in the display area 101, and other touch units 210 are located in the non-display area 102. For example, among the arrayed plurality of touch units 210, the outermost touch unit 210 is located in or partially located in the non-display area 102.

[0051] Multiple touch lines 220 are located on the display substrate 10. The touch lines 220 are connected to at least one touch unit 210, and are used to electrically connect the connected touch unit 210 to the touch integrated circuit 30 for connection with the touch integrated circuit 30. The multiple touch lines 220 include at least a first trace 221 and a second trace 222 located in the non-display area 102, wherein the length of the first trace 221 is greater than the length of the second trace 222.

[0052] In one embodiment, the touch line 220 connecting the touch unit 210 and the touch integrated circuit 30 can be: one end of the touch line is connected to the touch unit, and the other end of the touch line is connected to the touch integrated circuit.

[0053] In another embodiment, the touch line 220 connecting the touch unit 210 and the touch integrated circuit 30 can be: one end of each of the two touch lines is connected to the touch unit, the other end of one touch line is connected to the touch integrated circuit, and the other end of the other touch line is attached to the touch line connected to the touch integrated circuit.

[0054] In this embodiment of the disclosure, the length of the first trace refers to the extension length from the end of the first trace connected to the touch unit to the end of the first trace connected to the touch integrated circuit; the length of the second trace refers to the extension length from the end of the second trace connected to the touch unit to the end of the second trace connected to the touch integrated circuit.

[0055] All touch lines 220 are located in the non-display area 102, and some touch lines 220 are located in the display area 101 to be connected to the touch unit 210.

[0056] Figure 2 yes Figure 1 A cross-sectional view (AA) of a touch display panel is provided. The portion to the right of the dashed line in the figure is the non-display area, and the portion to the left of the dashed line is the display area. Figure 2 The first and second traces marked in the middle correspond to Figure 1 The first and second traces are marked in the middle. For example... Figure 2 As shown, the cross-sectional area of ​​the first trace 221 is greater than the cross-sectional area of ​​the second trace 222.

[0057] In this embodiment of the disclosure, the first trace 221 and the second trace 222 are relative terms. Figure 1 The diagram uses the two traces furthest from the display area 101 as an example.

[0058] Figure 1 The two traces selected in the Y region are designated as follows: the longer trace is the first trace 221, and the shorter trace is the second trace 222.

[0059] Figure 2 The two traces selected in the Z region are designated as follows: the trace with the larger cross-sectional area is the first trace 221, and the trace with the smaller cross-sectional area is the second trace 222.

[0060] For example, the touch lines have the same thickness, and the difference in cross-sectional area between the touch lines is reflected in the line width. That is, the larger the line width of the touch line, the larger the cross-sectional area of ​​the touch line, and the smaller the line width of the touch line, the smaller the cross-sectional area of ​​the touch line.

[0061] In the touch display panel provided in this embodiment, the touch line 220 extends to the edge of the display substrate 10, and the touch line 220 includes a first trace 221 and a second trace 222 located in the non-display area 102 of the display panel. Since the longer the touch line 220, the greater its resistance, the cross-sectional area of ​​the longer first trace 221 is set to be larger than that of the shorter second trace 222. This reduces the resistance of the longer touch line 220, thereby alleviating the problem of increased resistance caused by its greater length and making the resistance of different traces more consistent, thus improving the uniformity of the signal transmitted by the touch line 220.

[0062] For example, Figure 2 The diagram shows six touch lines 220 located in the non-display area 102, combined with... Figure 1It can be seen that the six touch lines 220 are all of different lengths. Any two of the six touch lines 220 are each other's first trace 221 and second trace 222. The cross-sectional area of ​​the longer touch line 220 is greater than that of the shorter touch line 220.

[0063] By making the cross-sectional area of ​​the longer touch line 220 larger, the resistance of the longer touch line 220 can be reduced, thereby alleviating the problem of increased resistance caused by the larger length of the touch line 220, making the resistance of different traces more consistent, and thus improving the uniformity of the signal transmitted by the touch line 220.

[0064] Figure 1 and Figure 2 The number of touch units and touch lines shown are just examples and can be set as needed. This disclosure does not impose any restrictions on them.

[0065] In some other implementations, some touch lines have the same cross-sectional area. For example, due to space constraints, some touch lines may have the same length and the same cross-sectional area. That is, for two touch lines of different lengths, their cross-sectional areas can also be set to be the same, as long as the resistance difference between the two touch lines is within a set range, and there is no issue of the uniformity of the transmitted signal being affected by a large resistance difference.

[0066] Optionally, the ratio of the cross-sectional area of ​​the first trace 221 to the cross-sectional area of ​​the second trace 222 is a first ratio, and the ratio of the length of the first trace 221 to the length of the second trace 222 is a second ratio, and the ratio of the first ratio to the second ratio is 0.95 to 1.05.

[0067] By limiting the first ratio and the second ratio within the above range, the resistance of the first trace and the second trace can be kept within a suitable gap, making the resistance of the first trace and the second trace tend to be consistent. This ensures that the resistance difference between the first trace and the second trace is not too large, which would affect the uniformity of the signal transmitted by the touch line and guarantee the touch accuracy of the touch display panel.

[0068] For example, due to deviations caused by factors such as manufacturing process, the ratio of the first ratio to the second ratio can be approximately 1, that is, the ratio of the cross-sectional area of ​​the first trace 221 to the cross-sectional area of ​​the second trace 222 is approximately equal to the ratio of the length of the first trace 221 to the length of the second trace 222.

[0069] By making the ratio of the cross-sectional area of ​​the first trace and the second trace equal to the ratio of their lengths, the resistance of the first trace and the second trace can be made to be consistent, thereby improving the uniformity of the signal transmitted by the touch line.

[0070] For example, in this embodiment of the present disclosure, the ratio of the cross-sectional area of ​​the first trace 221 to the cross-sectional area of ​​the second trace 222 can be from 1:1 to 1:5.

[0071] Optionally, such as Figure 1 As shown, the touch layer 20 also includes multiple parallel first connecting lines 223 and multiple parallel second connecting lines 224, which are located in the display area 101. The extension directions of the first connecting lines and the extension directions of the second connecting lines intersect, for example, perpendicularly.

[0072] In this embodiment, the touch layer 20 is a capacitive touch structure. One of the first connecting line 223 and the second connecting line 224 can be a sensing signal line for receiving touch sensing signals, and the other of the first connecting line 223 and the second connecting line 224 can be a driving signal line for sending touch driving signals. Among the plurality of touch units 210, those connected to the sensing signal lines are sensing electrodes, and those connected to the driving signal lines are driving electrodes. The two types of touch units 210 are mutually insulated. When a hand touches the screen, the capacitance at the touch location changes. The touch screen can determine the hand touch location based on the location of the touch unit 210 with the changed capacitance.

[0073] For example, such as Figure 1 As shown, the first connecting line 223 can be a sensing signal line for receiving touch sensing signals, and the second connecting line 224 can be a driving signal line for sending touch driving signals.

[0074] In this embodiment of the disclosure, the multiple touch units are divided into multiple first touch unit groups M and multiple second touch unit groups N.

[0075] like Figure 1 As shown, the first touch unit group M includes multiple touch units 210 located in the same row. The multiple touch units 210 in the first touch unit group M are connected by at least one first connecting line 223, and the multiple touch units 210 in the first touch unit group M are connected to at least one touch line 220. The touch lines 220 connected to the multiple touch units 210 in different first touch unit groups M are different.

[0076] By setting multiple first connection lines 223 on a single touch unit 210, allowing a single touch unit 210 to connect to multiple connection lines simultaneously, the touch sensitivity of the touch display panel can be improved.

[0077] For example, such as Figure 1 As shown, each of the first connection lines 223 connected to the touch unit 210 in the same row is simultaneously connected to a touch line 220.

[0078] In this way, after the multiple first connection lines 223 connected to each touch unit 210 in the first touch unit group M extend out of the display area 101, the multiple first connection lines 223 will simultaneously connect to a single touch line 220. This allows the touch lines 220 in the non-display area 102 to be distributed more sparsely, thereby reducing resistance and parasitic capacitance, making the load on each touch line 220 more uniform, and thus improving the uniformity of the signal transmitted by the touch lines 220.

[0079] For example, such as Figure 1 As shown, the second touch unit group N includes multiple touch units 210 located in the same column. The multiple touch units 210 in the second touch unit group N are connected by at least one second connecting line 224, and the multiple touch units 210 in the second touch unit group N are connected to a touch line 220. The touch lines 220 connected to the multiple touch units 210 in different second touch unit groups N are different.

[0080] By setting multiple second connection lines 224 on a single touch unit 210, allowing a single touch unit 210 to connect to multiple connection lines simultaneously, the touch sensitivity of the touch display panel can be improved.

[0081] For example, such as Figure 1 As shown, each of the second connection lines 224 connected to the touch unit 210 in the same column is simultaneously connected to a touch line 220.

[0082] In this way, after the multiple second connection lines 224 connected to each touch unit 210 in the second touch unit group N extend out of the display area 101, the multiple second connection lines 224 will simultaneously connect to a single touch line 220. This allows the touch lines 220 in the non-display area 102 to be distributed more sparsely, thereby reducing resistance and parasitic capacitance, making the load on each touch line 220 more uniform, and thus improving the uniformity of the signal transmitted by the touch lines 220.

[0083] Optionally, such as Figure 1 As shown, the touch display panel also includes two touch integrated circuits 30. The first touch unit group M is connected to the two touch integrated circuits 30 through two touch lines 220 located outside the display area 101, and the second touch unit group N is connected to at least one touch integrated circuit 30 through at least one touch line 220 located outside the display area 101.

[0084] By setting two touch integrated circuits 30, and distributing the two touch integrated circuits 30 on both sides of the display area 101, touch units 210 at different positions can be electrically connected to touch integrated circuits 30 through the first connecting line 223 that is the shortest distance from touch integrated circuits 30, thereby improving touch sensitivity.

[0085] The touch line 220 can be on the same layer as the first connecting line 223. "On the same layer as the first connecting line" means that the touch line and the first connecting line are located on the same side of the same layer structure, or that the surfaces of the touch line and the first connecting line near the substrate are in contact with the same layer structure, or that the touch line and the first connecting line are made of the same material and fabricated using the same patterning process.

[0086] For example, the first connecting line, the second connecting line, and the touch line are all on the same layer.

[0087] In some other implementations, the first connecting line and the second connecting line may be on different layers, and the second connecting line and the touch line may be connected through a via. This disclosure does not impose any restrictions.

[0088] In this embodiment, the hierarchical relationship between the first connecting line, the second connecting line, and the touch unit can be as follows:

[0089] The first type has the first connecting line, the second connecting line, and the touch unit on the same layer.

[0090] The second type has the first connecting line and the second connecting line on the same layer, while the first connecting line and the touch unit are on different layers.

[0091] The third type involves the first connecting line and the second connecting line being on different layers, while the first connecting line and the touch unit are on the same layer.

[0092] The fourth type involves the first and second connecting lines being on different layers, while the second connecting line and the touch unit are on the same layer.

[0093] The fifth type involves the first connecting line, the second connecting line, and the touch unit all being on different layers.

[0094] In some examples, multiple touch lines are a single-layer structure, and two adjacent touch lines in the multiple touch lines can be on different layers.

[0095] In the first scenario mentioned above, one of the two touch lines can be on the same layer as the touch unit, while the other touch line can be on a separate layer.

[0096] In the second scenario mentioned above, one of the two touch lines can be on the same layer as the touch unit, and the other of the two touch lines can be on the same layer as either the first or the second connecting line.

[0097] In the third scenario mentioned above, one of the two touch lines can be on the same layer as the touch unit, and the other of the two touch lines can be on the same layer as the second connecting line.

[0098] In the fourth scenario mentioned above, one of the two touch lines can be on the same layer as the touch unit, and the other of the two touch lines can be on the same layer as the first connecting line.

[0099] In the fifth scenario mentioned above, one of the two touch lines can be on the same layer as the touch unit, and the other of the two touch lines can be on the same layer as either the first or the second connecting line.

[0100] For example, Figure 3 This is a schematic diagram of the hierarchical structure of a touch line provided in an embodiment of this disclosure. For example... Figure 3 As shown, Figure 3 The diagram illustrates four touch lines 220. From left to right, the first and third touch lines 220 are on the same layer, as are the second and fourth touch lines 220. Compared to a layout where all touch lines are on the same layer, this alternating arrangement allows for a smaller spacing between adjacent touch lines, thus reducing the distance between touch lines in the direction parallel to the display substrate and achieving a narrow bezel.

[0101] In other examples, Figure 4 This is a schematic diagram of the hierarchical structure of another touch line provided in an embodiment of this disclosure. For example... Figure 4 As shown, at least a portion of the touch line includes a first sublayer 2251 and a second sublayer 2252 located on different layers. The orthographic projections of the first sublayer 2251 and the second sublayer 2252 on the display substrate at least partially overlap. The first sublayer 2251 and the second sublayer 2252 are connected through at least one via 226.

[0102] In the first scenario mentioned above, one of the first sub-layer and the second sub-layer can be on the same layer as the touch unit, while the other of the first sub-layer and the second sub-layer can be a separate layer.

[0103] In the second scenario mentioned above, one of the first and second sub-layers can be on the same layer as the touch unit, and the other of the two touch lines can be on the same layer as either the first or second connecting line.

[0104] In the third scenario mentioned above, one of the first sub-layer and the second sub-layer can be on the same layer as the touch unit, and the other of the first sub-layer and the second sub-layer can be on the same layer as the second connecting line.

[0105] In the fourth scenario mentioned above, one of the first sub-layer and the second sub-layer can be on the same layer as the touch unit, and the other of the first sub-layer and the second sub-layer can be on the same layer as the first connecting line.

[0106] In the fifth scenario mentioned above, one of the first sub-layer and the second sub-layer can be on the same layer as the touch unit, and the other of the first sub-layer and the second sub-layer can be on the same layer as the first connecting line or the second connecting line.

[0107] In this embodiment of the disclosure, all touch lines may have this double-layer distribution structure, some touch lines may have this double-layer distribution structure, or all touch lines may have a single-layer structure.

[0108] In this type of double-layered touch line, the cross-sectional area can be the sum of the cross-sectional areas of the two sub-layers.

[0109] Optionally, the touch display panel also includes a touch integrated circuit 30, and the first touch unit group and the second touch unit group are respectively connected to the touch integrated circuit 30 via a touch line 220 located outside the display area 101. Using fewer touch integrated circuits can effectively save costs.

[0110] Figure 5 This is a BB cross-sectional view of a touch display panel. For example... Figure 5 As shown, at the intersection of the first connecting line 223 and the second connecting line 224, a conductive structure 212 is provided below the second connecting line 224. When the first connecting line 223 passes through the location of the second connecting line 224, the first connecting line 223 is connected across layers through the conductive structure 212, thereby avoiding short circuits caused by the first connecting line 223 and the second connecting line 224 coming into contact with each other at the intersection.

[0111] like Figure 5 As shown, an insulating layer 211 is provided between the second connecting line 224 and the conductive structure 212 to prevent short circuit between the second connecting line 224 and the conductive structure 212 at the intersection.

[0112] In this configuration, the first connecting line 223, the touch unit 210, and the second connecting line 224 are all on the same layer. "Connecting line and touch unit on the same layer" means that the connecting line and the touch unit are located on the same side of the same layer structure, or that the surfaces of the connecting line and the touch unit closest to the substrate are in contact with the same layer structure, or that the connecting line and the touch unit are made of the same material and fabricated using the same patterning process.

[0113] In some implementations of this disclosure, the touch unit can be a transparent conductive layer, for example, an ITO (Indium tin oxide) layer and an IZO (Indium Zinc Oxide) layer.

[0114] In other implementations of this disclosure, the touch unit 210 may be a metal mesh structure. The metal mesh structure is formed by interwoven metal wires in a network shape.

[0115] Since the metal mesh structure is made of metal wires, in order to avoid the metal mesh structure blocking the light emitted by the display substrate, and since the structure in the display substrate that emits light consists of multiple light-emitting units arranged in an array, the metal mesh structure can be distributed around the light-emitting units to ensure the display effect of the display substrate.

[0116] In this embodiment, the non-display area of ​​the display substrate also includes a conductive film structure. Since the touch layer is located above the display substrate, the touch lines in the touch layer are prone to forming parasitic capacitances with the conductive film structure.

[0117] Furthermore, since the cross-sectional areas of the first and second traces located in the non-display area of ​​the touch line are different, it is easy for the parasitic capacitance between the first trace and the conductive film layer to differ from that between the second trace and the conductive film layer. This will affect the uniformity of the signal transmitted by the touch line and reduce the touch accuracy.

[0118] Therefore, the present disclosure embodiments have made improvements to the display substrate. For example... Figure 2 As shown, the display substrate 10 includes a conductive layer 111, which is located in the non-display area 102.

[0119] Figure 6 yes Figure 1 A plan view of the X region of a touch display panel is provided. (Example) Figure 6 As shown, the conductive layer 111 has at least one first through-hole 1121 and at least one second through-hole 1122. The first through-hole 1121 is located within the orthographic projection of the first trace 221 on the conductive layer 111, and the second through-hole 1122 is located within the orthographic projection of the second trace 222 on the conductive layer 111. The total opening area of ​​the first through-hole 1121 on the first trace per unit area is greater than the total opening area of ​​the second through-hole 1122 on the second trace per unit area.

[0120] The unit area of ​​the first wiring or the unit area of ​​the second wiring can be set as needed, and this embodiment does not impose any restrictions.

[0121] Since the first trace 221 is located above the first through hole 1121, and the first trace 221 covers the first through hole 1121. Figure 3 The first through hole 1121 drawn in the figure is indicated by a dashed line to indicate that the first through hole 1121 is located below the first trace 221, rather than indicating that the first through hole 1121 is located on the surface of the first trace 221 or above the first trace 221.

[0122] Since the second trace 222 is located above the second through hole 1122, and the second trace 222 covers the second through hole 1122. Figure 3 The second through hole 1122 is drawn as a dashed line to indicate that the second through hole 1122 is located below the second trace 222, rather than indicating that the second through hole 1122 is located on the surface of the second trace 222 or above the second trace 222.

[0123] By creating vias in the area of ​​the conductive layer 111 corresponding to the touch line 220, the relative area between the touch line 220 and the conductive layer 111 can be reduced, thereby reducing the parasitic capacitance of the touch line 220. Furthermore, the total opening area of ​​the first vias 1121 per unit area on the first trace is greater than the total opening area of ​​the second vias 1122 per unit area on the second trace. That is, the larger the cross-sectional area of ​​the touch line 220, the larger the total opening area of ​​the vias. Thus, by increasing the cross-sectional area of ​​the touch line 220, the relative area between the touch line 220 and the conductive layer 111 can be reduced, thereby reducing the parasitic capacitance and making the parasitic capacitances of each first trace 221 and second trace 222 more consistent.

[0124] For example, Figure 6 The diagram shows four touch lines 220 located in the non-display area 102, and the cross-sectional areas of the four touch lines 220 are all different. Any two of the four touch lines 220 are each the first trace 221 and the second trace 222.

[0125] Combination Figure 6 The total opening area of ​​the second through hole 1122 on the second routing line per unit area is less than the total opening area of ​​the first through hole 1121 on the first routing line per unit area.

[0126] By making the vias in the orthographic projection of the larger cross-sectional area touch line 220 on the conductive layer 111 larger, the parasitic capacitance formed between the larger cross-sectional area touch line 220 and the conductive layer 111 is reduced, thereby alleviating the problem of different parasitic capacitances caused by the uneven cross-sectional area of ​​the touch line 220, and making the parasitic capacitances of different traces tend to be consistent, thereby improving the uniformity of the signal transmitted by the touch line 220.

[0127] Optionally, the ratio of the total opening area of ​​the first through hole 1121 on the first routing line per unit area to the total opening area of ​​the second through hole 1122 on the second routing line per unit area is equal to the ratio of the cross-sectional area of ​​the first routing line 221 to the cross-sectional area of ​​the second routing line 222.

[0128] In this way, the total opening area of ​​the vias in the corresponding areas of the touch line 220 on the conductive layer 111 is set proportionally according to the cross-sectional area of ​​the touch line 220, so that the parasitic capacitance of each touch line 220 tends to be consistent, thereby effectively improving the uniformity of the signal transmitted by the touch line 220.

[0129] Due to the size limitations of the touch display panel, the length and cross-sectional area of ​​the first and second traces may not meet the proportional requirements, resulting in the resistance of the first and second traces not being consistent, which affects the touch accuracy of the touch display panel.

[0130] Optionally, the product of the capacitance between the first trace 221 and the conductive layer 111 and the resistance of the first trace 221 is the first load value, and the product of the capacitance between the second trace 222 and the conductive layer 111 and the resistance of the second trace 222 is the second load value. The ratio of the first load value to the second load value is 0.95 to 1.05.

[0131] By limiting the first load value and the second load value within the above range, the resistance and capacitance of the first trace and the second trace can be kept within a suitable gap, so that the total load of the first trace and the second trace tends to be consistent. This ensures that the load difference between the first trace and the second trace is not too large, which would affect the uniformity of the touch line transmission signal and guarantee the touch accuracy of the touch display panel.

[0132] For example, the ratio of the first load value to the second load value is 1, that is, the first load value is equal to the second load value.

[0133] By making the product of the resistance of each trace in the touch line 220 and the capacitance between each trace and the conductive layer equal, the load on different traces can be made more consistent, thereby improving the uniformity of the signal transmitted by the touch line.

[0134] Optionally, such as Figure 6 As shown, the conductive layer 111 has a plurality of first through holes 1121 and a plurality of second through holes 1122, which are arranged in an array. The number of first through holes 1121 and the number of second through holes 1122 are the same. The opening area of ​​each first through hole 1121 is different from the opening area of ​​each second through hole 1122, and the sum of the opening areas of each first through hole 1121 is greater than the sum of the opening areas of each second through hole 1122.

[0135] For example, such as Figure 6 As shown, the first through hole 1121 and the second through hole 1122 are arranged in a rectangular array on the surface of the conductive layer 111.

[0136] By arranging the first through-hole 1121 and the second through-hole 1122 in an array on the conductive layer 111, it is convenient to process and fabricate on the conductive layer 111. Furthermore, since the number of the first and second through-holes is the same, it is only necessary to control the opening area of ​​a single first through-hole and a single second through-hole to proportionally adjust the total opening area of ​​the through-holes projected onto the conductive layer 111 by different touch lines 220. This allows for proportional adjustment of the total opening area of ​​the through-holes based on the cross-sectional area of ​​the touch line 220.

[0137] In this embodiment of the present disclosure, the first and second vias can be arranged in other ways besides being arrayed. For example, a plurality of first vias within the orthographic projection on the conductive layer 111 can be distributed circumferentially around one of the first vias as the center on the surface of the conductive layer; a plurality of second vias within the orthographic projection on the conductive layer 111 can be distributed circumferentially around one of the second vias as the center on the surface of the conductive layer.

[0138] Optionally, the first through hole 1121 is a polygon, circle, ellipse or irregular closed shape.

[0139] For example, such as Figure 6 As shown, the first through hole 1121 is rectangular, and all the first through holes 1121 have the same shape. Alternatively, the shapes of the first through holes can be different; for example, some of the first through holes are rectangular, and others are circular.

[0140] Optionally, the second through-hole 1122 is a polygonal, circular, elliptical, or irregular closed shape. For example, as shown... Figure 6 As shown, the second through hole 1122 is rectangular, and all the second through holes 1122 have the same shape. Alternatively, the shapes of the second through holes can be different; for example, some of the second through holes are rectangular, and others are circular.

[0141] Optionally, the first through hole and the second through hole can have the same or different shapes.

[0142] In some other implementations, Figure 7 This is a schematic diagram showing the distribution of vias on a conductive layer according to an embodiment of this disclosure. For example... Figure 7 As shown, a plurality of first through holes 1121 and a plurality of second through holes 1122 are arranged in an array. The opening areas of each first through hole 1121 and each second through hole 1122 are the same, and the number of first through holes 1121 and the number of second through holes 1122 are different. The sum of the opening areas of each first through hole 1121 is greater than the sum of the opening areas of each second through hole 1122.

[0143] For example, the first through hole 1121 and the second through hole 1122 are both arranged in a rectangular array on the surface of the conductive layer 111.

[0144] By arranging the first through-holes 1121 and the second through-holes 1122 in an array on the conductive layer 111, it is convenient to process and fabricate on the conductive layer 111. Furthermore, since the opening areas of each first through-hole 1121 and each second through-hole 1122 are the same, by controlling different numbers of the first through-holes 1121 and the second through-holes 1122 in the array, the area of ​​the through-holes projected onto the conductive layer 111 by different touch lines 220 can be adjusted proportionally. This allows for proportional adjustment of the through-hole area based on the cross-sectional area of ​​the touch line 220.

[0145] Figure 8 This is a schematic diagram of the hierarchy of a touch display panel provided in an embodiment of this disclosure. Figure 8 The area to the left of the dashed line is the display area, and the area to the right of the dashed line is the non-display area. For example... Figure 8 As shown, the display substrate 10 includes an array substrate 120 and a plurality of light-emitting units 110. The light-emitting units 110 are arrayed on the array substrate 120, and the plurality of light-emitting units 110 are located in the display area 101.

[0146] like Figure 8 As shown, the light-emitting unit 110 includes an anode layer 113, a light-emitting layer 114 and a cathode layer 115 stacked in sequence, with the anode layer 113 or the cathode layer 115 being on the same layer as the conductive layer 111.

[0147] The phrase "anode layer or cathode layer and conductive layer are in the same layer" means that the anode layer or cathode layer and the conductive layer are located on the same side of the same layer structure, or that the anode layer or cathode layer and the conductive layer are in contact with the same layer structure on the surface of the substrate, or that the anode layer or cathode layer and the conductive layer are made of the same material and prepared by the same patterning process.

[0148] In this embodiment, the power signal line is located in the non-display area 102 of the display panel and is used to provide a negative voltage signal. The conductive layer 111 serves as a conductive structure, connecting the power signal line and the cathode layer 115. This provides a constant voltage signal, allowing the power signal line to supply potential to the cathode layer 115 through the conductive layer 111, creating a voltage difference between the cathode layer 115 and the anode layer 113, generating current, and causing the light-emitting unit to emit different brightness levels.

[0149] For example, such as Figure 2 As shown, the anode layer 113 and the conductive layer 111 are on the same layer, and the orthogonal projection of the cathode layer 115 on the anode layer 113 is outside the orthogonal projection of the second trace 222 on the anode layer 113.

[0150] In the above implementation, a portion of the cathode layer 115 located at the edge of the display area 101 extends into the non-display area 102 and is connected to the power signal lines in the non-display area 102 via the conductive layer 111. Furthermore, the cathode layer 115 does not extend below the touch line 220, meaning there is no overlap between the cathode layer 115 and the touch line 220. This avoids the formation of parasitic capacitance between the cathode layer 115 and the touch line 220, effectively reducing the load on the touch line 220.

[0151] For example, the light-emitting layer 114 may include a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), an electron injection layer (EIL), a hole block layer (HBL), an electron blocking layer (EBL), and a light-emitting material layer.

[0152] like Figure 8 As shown, the array substrate 120 includes a substrate 121 and a plurality of driving circuits, which are arrayed on the substrate 121. Each driving circuit is connected to at least one corresponding light-emitting unit 110. In this way, the light-emitting unit can emit light under the drive of the connected driving circuit.

[0153] In this embodiment of the disclosure, the array substrate 120 can be a TFT (Thin Film Transistor) substrate, and each driving circuit on the array substrate 120 includes at least two TFTs for controlling the light-emitting unit connected to emit light.

[0154] The driving circuit is electrically connected to the anode layer 113 of the light-emitting unit 110.

[0155] For example, within the display area 101, the array substrate includes a substrate 121, an active layer 122, a gate insulating layer 123, a gate layer 124, an interlayer dielectric layer 125, and a source / drain layer 126 stacked sequentially. Figure 5 As shown, the light-emitting unit 110 is connected to the source-drain layer 126 of the corresponding driving circuit.

[0156] The display substrate 10 also includes a pixel defining layer 116 located on the array substrate 120. The pixel defining layer 116 includes multiple openings distributed in an array, and each opening contains a light-emitting unit 110.

[0157] For example, the substrate 121 can be made of glass, quartz, plastic, etc.; the active layer 122 can be made of amorphous silicon, polycrystalline silicon, or metal oxide semiconductor, etc.; the gate insulating layer 123 can be made of silicon oxide or silicon nitride, silicon nitride, etc.; the gate metal layer can be made of a single-layer metal thin film such as molybdenum, copper, or titanium, or a multilayer metal thin film such as molybdenum / aluminum / molybdenum or titanium / aluminum / titanium; the interlayer dielectric layer 125 can be made of silicon oxide or silicon nitride, etc.; the source / drain metal layer can be made of a single-layer metal thin film such as aluminum, molybdenum, copper, or titanium, or a multilayer metal thin film such as molybdenum / aluminum / molybdenum or titanium / aluminum / titanium. For example, the active layer 122 can be made of LTPS (Low Temperature Poly-Silicon) and LTPO (Low Temperature Polycrystalline Oxide), etc.

[0158] It should be noted that the example only shows a TFT substrate structure with a single gate metal layer. The TFT substrate structure can also be a double gate metal layer or other structures. This disclosure does not limit the specific structure.

[0159] For example, such as Figure 2 As shown, in the non-display area 102, the display substrate includes a substrate 121, a gate driving circuit 103, a multilayer planarization layer 104, a conductive layer 111, a pixel defining layer 116, a cathode layer 115 and an encapsulation layer 105 stacked sequentially.

[0160] Among them, such as Figure 2 As shown, the display substrate also includes a power signal line located on one side of the gate driving circuit 103. The power signal line has three stacked metal layers 106, and a conductive layer 111 is stacked on the metal layers 106, so that the metal layers 106 and the conductive layers 111 are connected, thereby realizing the connection between the power signal line and the cathode layer 115, so that the power signal line provides potential to the cathode layer 115.

[0161] Optionally, a flat layer 104 and a dam structure 107 are also stacked sequentially on the power signal line. The dam structure 107 is located in the non-display area and is arranged around the display area to prevent water and oxygen from entering the display area, thus protecting the light-emitting unit.

[0162] On the display substrate, a crack blocking structure 108 is also provided on the side of the power signal line away from the display area, stacked on the substrate 121. The crack blocking structure 108 is located on the outermost side of the non-display area and is used to prevent cracks at the edge of the substrate from propagating into the display area.

[0163] This disclosure provides a display device including a touch display panel and a power supply component as described above, wherein the power supply component is electrically connected to the touch display panel. The power supply component may be a power source or the like.

[0164] The display device can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0165] Figure 9 This is a flowchart illustrating a method for manufacturing a touch display panel according to an embodiment of this disclosure. Figure 9 As shown, the preparation method includes:

[0166] Step S1: Provide a display substrate.

[0167] Among them, such as Figure 1 As shown, the display substrate 10 has a display area 101 and a non-display area 102 surrounding the display area 101.

[0168] Step S2: Form multiple touch units and multiple touch lines on the display substrate to form a touch layer.

[0169] For details on the structure and distribution of the touch unit and touch lines, please refer to [link / reference needed]. Figures 1 to 4 The example shown.

[0170] For details on the structure of the display substrate, please refer to [link / reference]. Figure 8 The example shown.

[0171] In step S2, when preparing the touch line, a first trace and a second trace with different cross-sectional areas can be formed through a single patterning process.

[0172] In step S2, the preparation of the display substrate also includes: preparing a conductive layer on the substrate.

[0173] The structure of the conductive layer can be found in [reference needed]. Figure 2 The example shown.

[0174] The first and second vias on the conductive layer can be formed by etching. For specific etching methods, please refer to relevant technical documentation.

[0175] In the touch display panel prepared by the above method, the touch line 220 extends to the edge of the display substrate 10, and the touch line 220 includes a first trace 221 and a second trace 222 located in the non-display area 102 of the display panel. Since the longer the touch line 220 is, the greater its resistance, the cross-sectional area of ​​the longer first trace 221 is set to be larger than that of the shorter second trace 222. That is, by setting the cross-sectional area of ​​the longer touch line 220 to be larger, the resistance of the longer touch line 220 is reduced, thereby alleviating the problem of increased resistance caused by the greater length of the touch line 220, making the resistance of different traces tend to be consistent, and thus improving the uniformity of the signal transmitted by the touch line 220.

[0176] The above is not intended to limit this disclosure in any way. Although this disclosure has been disclosed above through embodiments, it is not intended to limit this disclosure. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this disclosure. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solution of this disclosure shall still fall within the scope of the technical solution of this disclosure.

Claims

1. A touch display panel, characterized in that, The touch display panel includes a display substrate and a touch layer; The display substrate has a display area and a non-display area surrounding the display area. The display substrate includes: a conductive layer and a power signal line located in the non-display area, and a light-emitting unit located in the display area. The light-emitting unit includes an anode layer, a light-emitting layer and a cathode layer stacked sequentially. The anode layer or the cathode layer is on the same layer as the conductive layer. The conductive layer has at least one first through-hole and at least one second through-hole and connects the power signal line and the cathode layer of the light-emitting unit. The touch layer includes multiple touch units and multiple touch lines, the multiple touch units are arranged in an array, and at least part of them are located in the display area; The multiple touch lines are located on the display substrate. The touch lines are connected to at least one touch unit, and the touch lines are used to electrically connect the connected touch unit to the touch integrated circuit. The touch unit is a transparent conductive layer or a metal mesh structure. The multiple touch lines include a first trace and a second trace located in the non-display area. The length of the first trace is greater than the length of the second trace, and the cross-sectional area of ​​the first trace is greater than the cross-sectional area of ​​the second trace. The first through-hole and the second through-hole are respectively located within the orthographic projection of the first trace and the second trace on the conductive layer. The total opening area per unit area of ​​the first through-hole on the first trace is greater than the total opening area per unit area of ​​the second through-hole on the second trace. The ratio of the product of the capacitance of the first trace and the conductive layer and the resistance of the first trace to the product of the capacitance of the second trace and the conductive layer and the resistance of the second trace is 0.95 to 1.

05. 2.The touch display panel of claim 1, wherein, The ratio of the cross-sectional area of ​​the first trace to the cross-sectional area of ​​the second trace is a first ratio, and the ratio of the length of the first trace to the length of the second trace is a second ratio. The ratio of the first ratio to the second ratio is between 0.95 and 1.

05.

3. The touch display panel according to claim 1, characterized in that, The ratio of the total opening area of ​​the first through hole on the first trace per unit area to the total opening area of ​​the second through hole on the second trace per unit area is equal to the ratio of the cross-sectional area of ​​the first trace to the cross-sectional area of ​​the second trace.

4. The touch display panel according to claim 1, characterized in that, The conductive layer has a plurality of first through holes and a plurality of second through holes arranged in an array. The number of first through holes and the number of second through holes are the same. The opening area of ​​each first through hole is different from the opening area of ​​each second through hole, and the sum of the opening areas of each first through hole is greater than the sum of the opening areas of the second through holes.

5. The touch display panel according to claim 1, characterized in that, The conductive layer has a plurality of first through holes and a plurality of second through holes arranged in an array. The opening area of ​​each first through hole is the same as the opening area of ​​each second through hole, and the number of first through holes and the number of second through holes are different. The sum of the opening areas of each first through hole is greater than the sum of the opening areas of the second through holes.

6. The touch display panel according to claim 1, characterized in that, The first through hole is a polygon, a circle, an ellipse, or an irregular closed shape, and the second through hole is a polygon, a circle, an ellipse, or an irregular closed shape.

7. The touch display panel according to claim 6, characterized in that, The shape of the first through hole may be the same as or different from the shape of the second through hole.

8. The touch display panel according to claim 1, characterized in that, The anode layer is on the same layer as the conductive layer, and the orthogonal projection of the cathode layer onto the anode layer is outside the orthogonal projection of the second trace onto the anode layer.

9. The touch display panel according to claim 8, characterized in that, The display substrate also includes a power signal line located in the non-display area, and the conductive layer is connected to the power signal line and the cathode layer respectively.

10. The touch display panel according to any one of claims 1 to 9, characterized in that, The touch layer also includes multiple parallel first connecting lines and multiple parallel second connecting lines, the first connecting lines and the second connecting lines being located in the display area; The plurality of touch units are divided into a plurality of first touch unit groups and a plurality of second touch unit groups. The first touch unit group includes a plurality of touch units located in the same row. The plurality of touch units in the first touch unit group are connected by at least one first connecting line and are connected to at least one touch line. The touch lines connected to the plurality of touch units in different first touch unit groups are different. The second touch unit group includes a plurality of touch units located in the same column. The plurality of touch units in the second touch unit group are connected by at least one second connecting line and connected to one touch line. The touch lines connected to the plurality of touch units in different second touch unit groups are different.

11. The touch display panel according to claim 10, characterized in that, The touch display panel further includes two touch integrated circuits. The first touch unit group is connected to the two touch integrated circuits through two touch lines located outside the display area, and the second touch unit group is connected to at least one touch integrated circuit through at least one touch line located outside the display area.

12. The touch display panel according to claim 10, characterized in that, The touch display panel further includes a touch integrated circuit, and the first touch unit group and the second touch unit group are respectively connected to the touch integrated circuit through a touch line located outside the display area.

13. The touch display panel according to any one of claims 1 to 9, characterized in that, The display substrate includes an array substrate and a plurality of light-emitting units, wherein the plurality of light-emitting units are arranged in an array on the array substrate; The array substrate includes a substrate and a plurality of driving circuits, wherein the plurality of driving circuits are arranged in an array on the substrate. The driving circuit is connected to at least one of the corresponding light-emitting units.

14. The touch display panel according to any one of claims 1 to 9, characterized in that, All of the multiple touch lines are single-layer structures, and adjacent touch lines are on different layers; or, At least a portion of the touch line includes a first sub-layer and a second sub-layer located on different layers, the orthographic projections of the first sub-layer and the second sub-layer on the display substrate at least partially overlap, and the first sub-layer and the second sub-layer are connected by at least one via.

15. A display device, characterized in that, The display device includes a touch display panel as described in any one of claims 1 to 14 and a power supply component, wherein the power supply component is electrically connected to the touch display panel.

16. A method for manufacturing a touch display panel, characterized in that, The preparation method includes: A display substrate is provided, the display substrate having a display area and a non-display area surrounding the display area, the display substrate including: a conductive layer and a power signal line located in the non-display area and a light-emitting unit located in the display area, the light-emitting unit including an anode layer, a light-emitting layer and a cathode layer stacked sequentially, the anode layer or the cathode layer being on the same layer as the conductive layer, the conductive layer having at least one first through hole and at least one second through hole and connecting the power signal line and the cathode layer of the light-emitting unit; Multiple touch units and multiple touch lines are formed on the display substrate to form a touch layer. The multiple touch units are arrayed on the display substrate and located in the display area. The multiple touch lines are located on the display substrate and are connected to at least one of the touch units. The touch lines are used to connect to a touch integrated circuit. The touch unit is a transparent conductive layer or a metal mesh structure. The multiple touch lines include a first trace and a second trace located in the non-display area. The length of the first trace is greater than the length of the second trace, and the cross-sectional area of ​​the first trace is greater than the cross-sectional area of ​​the second trace. The first via and the second via are located within the orthographic projection of the first trace and the second trace on the conductive layer, respectively. The total opening area per unit area of ​​the first via on the first trace is greater than the total opening area per unit area of ​​the second via on the second trace. The ratio of the product of the capacitance of the first trace and the conductive layer and the resistance of the first trace to the product of the capacitance of the second trace and the conductive layer and the resistance of the second trace is 0.95 to 1.05.

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