Display panel and display device

Abstract

A display panel and a display device, the display panel comprising a substrate substrate, a driving circuit layer, a display structure layer, an encapsulation layer, a touch electrode and a touch trace; the touch trace comprises a first sub-part and a second sub-part, a surface of the substrate substrate close to the touch trace is a first surface, a distance between the first sub-part and the first surface is less than a distance between the second sub-part and the first surface; the second sub-part comprises a first height part and a second height part, a height of the first height part relative to the first surface is less than a height of the second height part relative to the first surface, a line width of each position of the first height part is inversely proportional to the height of the corresponding each position of the first height part relative to the first surface, and a line width of each position of at least part of the second height part is proportional to the height of the corresponding each position of the second height part relative to the first surface. By making corresponding width compensation to the touch trace with higher climbing part, the preparation yield of the touch trace can be improved, and the touch effect of the display panel can be improved.

Description

[0001] This divisional application is filed on July 9, 2021, with application number 202110776190.6 and titled "Display Panel and Display Device". Technical Field

[0002] Embodiments of this disclosure relate to a display panel and a display device. Background Technology

[0003] AMOLED (Active-matrix organic light emitting diode) is a self-emissive display with advantages such as faster response time, higher contrast, and wider viewing angle, and therefore it has been increasingly widely used.

[0004] With the rapid development of AMOLED technology, displays have gradually entered the era of full-screen and foldable screens. In order to bring users a better user experience, rollable wearable and foldable display products will inevitably become an important development direction in the future display field. Summary of the Invention

[0005] This disclosure provides at least one embodiment of a display panel having a display area and a peripheral area surrounding the display area, and including a substrate, a driving circuit layer, a display structure layer, an encapsulation layer, touch electrodes, and touch traces; the driving circuit layer is disposed on the substrate; the display structure layer is disposed on a side of the driving circuit layer away from the substrate; the encapsulation layer is disposed on a side of the display structure layer away from the substrate; the touch electrodes are disposed on a side of the encapsulation layer away from the substrate and are at least located in the display area; the touch traces are disposed on a side of the encapsulation layer away from the substrate and are electrically connected to the touch electrodes; wherein, the touch traces include electrically connected first sub-parts and second sub-parts, and the substrate... The surface of the substrate closest to the touch trace is a first surface. The distance between the first sub-part and the first surface is less than the distance between the second sub-part and the first surface. The second sub-part includes a first height portion and a second height portion that are electrically connected. The first height portion is located between the first sub-part and the second height portion. The height of the first height portion relative to the first surface is less than the height of the second height portion relative to the first surface. The linewidth at each position of the first height portion is inversely proportional to the height of the corresponding position of the first height portion relative to the first surface. At least some of the linewidths at each position of the second height portion are directly proportional to the height of the corresponding position of the second height portion relative to the first surface.

[0006] For example, in the display panel provided by at least one embodiment of the present disclosure, the average line width of the first height portion is smaller than the average line width of the second height portion.

[0007] For example, in the display panel provided by at least one embodiment of the present disclosure, the ratio range of the maximum line width of the first height portion to the maximum line width of the second height portion is 0.50 to 0.95.

[0008] For example, in the display panel provided by at least one embodiment of the present disclosure, for the second sub - portion corresponding to the boundary line between the first height portion and the second height portion, the height relative to the first surface is H, and the line width of the second sub - portion corresponding to the boundary line is W, then H / W = 0.150 to 0.375.

[0009] For example, in the display panel provided by at least one embodiment of the present disclosure, the average line width of the first sub - portion is smaller than the average line width of the second sub - portion.

[0010] For example, in the display panel provided by at least one embodiment of the present disclosure, at a certain position, the height of the second sub - portion relative to the first surface is h, the included angle between the surface of the second sub - portion far from the substrate and the first surface is θ, and the line width of the second sub - portion at this position is d. Then 0 < H < 3μm, 0 < θ < 30°; the compensation width of d relative to W is Δd, and Δd=(d - W)=K*(h - H) / tanθ, where 0.5 < K < 10.

[0011] For example, in the display panel provided by at least one embodiment of the present disclosure, 1μm < H < 2.5μm, 15° < θ < 25°; the compensation width of d relative to W is Δd, and Δd=(d - W)=K*(h - H) / tanθ, where 0.5 < K < 2.

[0012] For example, in the display panel provided by at least one embodiment of the present disclosure, 1.2μm < H < 1.7μm, 17° < θ < 23°; the compensation width of d relative to W is Δd, and Δd=(d - W)=K*(h - H) / tanθ, where 0.8 < K < 1.3.

[0013] For example, the display panel provided by at least one embodiment of the present disclosure further includes an organic structure. Among them, at least part of the organic structure is located in the peripheral area. The touch trace is arranged on the side of the organic structure far from the substrate, and at least one edge of the organic structure intersects with the extension direction of the touch trace. The organic structure includes an organic ramp portion and an organic flat portion.

[0014] For example, in a display panel provided in at least one embodiment of this disclosure, the second sub-part includes a ramp portion and a flat portion. The ramp portion includes a first height portion and a portion of the second height portion. The flat portion includes another portion of the second height portion. The slope of the ramp portion of the second sub-part is substantially the same as that of the organic ramp portion. The orthographic projection of the ramp portion of the second sub-part on the substrate overlaps with the orthographic projection of the organic ramp portion on the substrate. The orthographic projection of the flat portion of the second sub-part on the substrate overlaps with the orthographic projection of the organic flat portion on the substrate.

[0015] For example, in a display panel provided in at least one embodiment of this disclosure, the slope of the organic ramp portion changes continuously.

[0016] For example, in a display panel provided in at least one embodiment of this disclosure, the organic slope portion includes a first slope sub-portion and a second slope sub-portion, the second slope sub-portion being located on the side of the first slope sub-portion facing the organic flat portion; the average slope of the first slope sub-portion is greater than the average slope of the second slope sub-portion.

[0017] For example, in a display panel provided in at least one embodiment of this disclosure, the organic structure includes a barrier wall that at least partially surrounds the display area and includes a first barrier wall portion located on at least one side of the display area. The touch trace includes a first trace portion that extends in a direction that intersects with the extension direction of the first barrier wall portion. At least a portion of the orthographic projection of the first trace portion on the substrate overlaps with the orthographic projection of the first barrier wall portion on the substrate.

[0018] For example, in a display panel provided in at least one embodiment of this disclosure, the first barrier portion includes a plurality of sub-barriers spaced apart in a direction away from the display area, the first sub-perimeter includes a first portion of the first trace portion located between adjacent sub-barriers in the plurality of sub-barriers, and the second sub-perimeter includes a second portion of the first trace portion located on the side of the plurality of sub-barriers away from the substrate.

[0019] For example, in a display panel provided in at least one embodiment of this disclosure, the ratio of the length of the first portion in its extension direction to its width in the direction perpendicular to its extension direction ranges from 1.4 to 3.4.

[0020] For example, in a display panel provided in at least one embodiment of this disclosure, the ratio of the length of the first portion in its extension direction to the width of each of the plurality of sub-walls ranges from 0.7 to 1.3; the width of the plurality of sub-walls is perpendicular to the extension direction of the plurality of sub-walls.

[0021] For example, in a display panel provided in at least one embodiment of this disclosure, the driving circuit layer includes a pixel driving circuit and a data line electrically connected to the pixel driving circuit, the display structure layer includes a light-emitting device, the pixel driving circuit is configured to be electrically connected to the light-emitting device to drive the light-emitting device, the data line is configured to provide a data signal to the pixel driving circuit, the peripheral area further includes a fan-out data signal line, the fan-out data signal line is electrically connected to the data line, the orthographic projection of the fan-out data signal line on the substrate at least partially overlaps with the orthographic projection of the first baffle portion on the substrate; the orthographic projection of the fan-out data signal line on the substrate at least partially overlaps with the orthographic projection of the first trace portion on the substrate.

[0022] For example, in a display panel provided in at least one embodiment of this disclosure, at least a portion of the fan-out data signal lines extend in a direction that intersects with the extension direction of the first baffle portion and with the extension direction of the first wiring portion.

[0023] For example, in a display panel provided in at least one embodiment of this disclosure, the extension directions of the first retaining wall portion and the first wiring portion are substantially perpendicular.

[0024] For example, in a display panel provided in at least one embodiment of this disclosure, the touch trace includes a first sub-trace layer and a second sub-trace layer located on the side of the first sub-trace layer away from the substrate; the display panel further includes a touch insulating layer disposed between the first sub-trace layer and the second sub-trace layer, including a via, through which the first sub-trace layer and the second sub-trace layer are electrically connected; in a direction perpendicular to the first surface, the via at least partially overlaps with the first barrier portion.

[0025] For example, in a display panel provided in at least one embodiment of this disclosure, the orthographic projection of the via on the substrate is located within the orthographic projection of the second height portion on the substrate.

[0026] For example, in a display panel provided in at least one embodiment of this disclosure, the ratio of the area of ​​the orthographic projection of the via on the substrate to the area of ​​the orthographic projection of the second height portion on the substrate is greater than 0.2 and less than 0.8.

[0027] For example, in a display panel provided in at least one embodiment of this disclosure, the dividing line between the first height portion and the second height portion is substantially flush with at least one dividing line of the via.

[0028] For example, at least one embodiment of the present disclosure provides a display panel that further includes a shielding structure, wherein the orthographic projection of the shielding structure on the substrate at least partially overlaps with the orthographic projection of at least one of the plurality of sub-barriers on the substrate, the shielding structure including a first shielding structure and a second shielding structure, the height of the first shielding structure relative to the first surface being greater than the height of the second shielding structure relative to the first surface; and in a direction perpendicular to the first surface, the boundary line between the first height portion and the second height portion at least partially overlaps with the first shielding structure.

[0029] For example, in a display panel provided in at least one embodiment of this disclosure, at least one of the plurality of sub-walls includes a first sub-film layer and a second sub-film layer located on the side of the first sub-film layer away from the substrate, a first shielding structure located between the first sub-film layer and the second sub-film layer, and a second shielding structure located on the side of the second sub-film layer close to the substrate, and not overlapping with the first sub-film layer in a direction perpendicular to the substrate.

[0030] For example, in the display panel provided in at least one embodiment of this disclosure, the ratio of the minimum distance between the boundary line of the first height portion and the second height portion and the edge of the first shielding structure to the width of the first shielding structure in the extension direction of the touch trace is in the range of 0.3 to 0.6 in the direction parallel to the first surface.

[0031] For example, in a display panel provided in at least one embodiment of this disclosure, the touch traces further include a third sub-section and a fourth sub-section, the organic structure further includes a first organic structure, the first organic structure covers the display area and part of the peripheral area, and the first organic structure is located on the side of the barrier wall closer to the display area and spaced apart from the barrier wall, the third sub-section is located between the first organic structure and the barrier wall, and the fourth sub-section is located on the side of the first organic structure away from the substrate; at least a portion of the linewidth of the fourth sub-section at each location is inversely proportional to the distance of the fourth sub-section from the first surface at each location.

[0032] For example, in a display panel provided in at least one embodiment of this disclosure, the edge of the first organic structure near the barrier intersects the extending directions of the third sub-part and the fourth sub-part.

[0033] For example, in a display panel provided in at least one embodiment of this disclosure, the average line width of the fourth sub-part is smaller than the average line width of the third sub-part.

[0034] For example, in a display panel provided in at least one embodiment of this disclosure, the touch trace further includes a fifth sub-section and a sixth sub-section, the organic structure further includes a second organic structure, the second organic structure is located on the side of the barrier away from the display area and is spaced apart from the barrier, the fifth sub-section is located between the barrier and the second organic structure, and the sixth sub-section is located on the side of the second organic structure away from the substrate; at least a portion of the linewidth of the sixth sub-section at each location is inversely proportional to the distance of the sixth sub-section from the first surface at each location.

[0035] For example, in a display panel provided in at least one embodiment of this disclosure, the edge of the second organic structure near the barrier intersects the extending directions of the fifth sub-part and the sixth sub-part.

[0036] For example, in a display panel provided in at least one embodiment of this disclosure, the average line width of the sixth sub-part is smaller than the average line width of the fifth sub-part.

[0037] For example, in a display panel provided in at least one embodiment of this disclosure, a first slope angle is formed between the slope of the first organic structure near the retaining wall and the first surface; a second slope angle is formed between the slope of the second organic structure near the retaining wall and the first surface; and a third slope angle is formed between the slope of the retaining wall and the first surface; the difference between the first slope angle and the third slope angle is less than or equal to 20°; and / or the difference between the second slope angle and the third slope angle is less than or equal to 20°.

[0038] At least one embodiment of this disclosure also provides a display device, wherein the display substrate includes any of the display panels provided in the embodiments of this disclosure. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0040] Figure 1 A plan view of a display panel provided in at least one embodiment of this disclosure;

[0041] Figure 2 for Figure 1 An enlarged view of the display panel in the dashed box F1 section;

[0042] Figure 3 for Figure 2 A schematic diagram of the cross-section of the display panel along the NN line;

[0043] Figure 4 for Figure 1A schematic diagram of the cross-section of the display panel along the MM line;

[0044] Figure 5 This disclosure provides a cross-sectional schematic diagram of an organic structure in a display panel according to at least one embodiment;

[0045] Figure 6 for Figure 1 An enlarged view of the display panel in the dashed box F2 area;

[0046] Figure 7 for Figure 2 Another cross-sectional view of the display panel along line NN;

[0047] Figure 8 for Figure 2 Another cross-sectional schematic diagram of the display panel along line NN;

[0048] Figure 9 for Figure 1 Another enlarged view of the display panel in the dashed box area F2;

[0049] Figure 10 for Figure 9 A partial cross-sectional diagram of the display panel along the PP line; and

[0050] Figure 11 for Figure 1 Another cross-sectional view of the display panel along the MM line; Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, 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, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” 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.

[0053] Display panels typically incorporate touch structures, which are mounted on the panel's encapsulation layer. These structures include touch electrodes and touch traces. The touch traces extend from the display area to the non-display area of ​​the display panel, electrically connecting the touch electrodes to touch driving circuitry, such as a touch IC, located in the non-display area. During the extension of these touch traces, they pass through the edges of functional layers within the display panel, such as organic, inorganic, or metallic layers. Because these functional layers have a certain height, and their extension directions intersect with the extension directions of at least some of the touch traces, the touch traces ascend from one height to another as they pass through the edges of these functional layers.

[0054] For example, taking an organic film layer as an example, when the touch traces climb from the bottom to the top of the organic structure, there will be a large step difference. During the fabrication of the touch traces, such as during the patterning process, a layer of photoresist needs to be formed on the metal film layer that forms the touch traces. Then, exposure, development, and other processes are performed. At this time, because the touch traces have different heights at the climbing position of the organic structure, after the above exposure and development processes, a thicker layer of photoresist tends to accumulate at the climbing position. This results in photoresist residue in the area between adjacent touch traces at the climbing position. After the photoresist is removed, metal residue will remain, causing a short circuit between adjacent touch traces, which in turn leads to touch failure.

[0055] For example, the probability of the aforementioned touch malfunctions is higher near densely packed dam structures. Therefore, touch traces near the ramps crossing dam structures generally need to be designed with narrower linewidths to prevent short circuits between adjacent touch traces. However, because touch traces on dam structures have varying heights, when designing the patterning process for touch traces, if the traces are designed with the same linewidth, the linewidth of higher-height touch traces will be smaller than that of lower-height touch traces due to differences in exposure distance during the exposure process. In other words, the touch linewidth decreases with increasing height. Therefore, at higher heights, touch traces may experience breakage, and the overall resistance of the touch traces will increase, affecting the touch performance of the display panel.

[0056] At least one embodiment of this disclosure provides a display panel. The display substrate has a display area and a peripheral area surrounding the display area, and includes a substrate, a driving circuit layer, a display structure layer, an encapsulation layer, touch electrodes, and touch traces. The driving circuit layer is disposed on the substrate. The display structure layer is disposed on the side of the driving circuit layer away from the substrate. The encapsulation layer is disposed on the side of the display structure layer away from the substrate. The touch electrodes are disposed on the side of the encapsulation layer away from the substrate and are located at least in the display area. The touch traces are disposed on the side of the encapsulation layer away from the substrate and are electrically connected to the touch electrodes. The touch traces include an electrically connected first sub-part and a... The second sub-part has a first surface on the substrate near the touch trace, and the distance between the first sub-part and the first surface is less than the distance between the second sub-part and the first surface. The second sub-part includes a first height portion and a second height portion that are electrically connected. The first height portion is located between the first sub-part and the second height portion. The height of the first height portion relative to the first surface is less than the height of the second height portion relative to the first surface. The linewidth at each position of the first height portion is inversely proportional to the height of the corresponding position of the first height portion relative to the first surface. At least some of the linewidths at each position of the second height portion are directly proportional to the height of the corresponding position of the second height portion relative to the first surface.

[0057] In the display panel provided in at least one embodiment of this disclosure, by performing corresponding width compensation on the touch traces with higher ramps, it can be ensured that adjacent touch traces do not short-circuit at the ramp position, and the phenomenon of touch trace breakage that may occur due to the high ramp of the touch traces can be avoided, thereby improving the manufacturing yield of touch traces and improving the touch effect of the display panel.

[0058] The display panel provided in the embodiments of this disclosure is described below through several specific examples.

[0059] At least one embodiment of this disclosure provides a display panel, Figure 1 A plan view of the display panel is shown. Figure 2 The display panel is shown in Figure 1 An enlarged view of the dashed box F1 in the image. Figure 3 It shows Figure 2 A cross-sectional schematic diagram of the display panel along the NN line, and Figure 4 It shows Figure 1 A cross-sectional schematic diagram of the display area of ​​the display panel along the MM line.

[0060] like Figures 1-4 As shown, the display panel 100 has a display area AA and a peripheral area NA surrounding the display area AA, and includes a substrate 101, a driving circuit layer 102, a display structure layer, an encapsulation layer EN, touch electrodes TE, and touch traces 20, etc.

[0061] For example, the display panel 100 includes a plurality of sub-pixels arranged in an array, each sub-pixel including a pixel driving circuit and a light-emitting device EM, the pixel driving circuit being configured to be electrically connected to the light-emitting device EM to drive the light-emitting device.

[0062] For example, such as Figure 4 As shown, a driving circuit layer 102 is disposed on a substrate 101 and includes pixel driving circuits for multiple sub-pixels. These pixel driving circuits include structures such as thin-film transistors (T) and storage capacitors (C). A display structure layer is disposed on the side of the driving circuit layer 102 away from the substrate 101 and includes light-emitting devices (EM) for multiple sub-pixels. An encapsulation layer EN is disposed on the side of the display structure layer away from the substrate 101, and may include, for example, multiple encapsulation sub-layers for encapsulating the display structure layer.

[0063] For example, the touch electrode TE is disposed on the side of the encapsulation layer EN away from the substrate 101, and is located at least in the display area AA, to provide touch functionality at least in the display area AA. For example, as Figure 1 As shown, the touch electrode TE includes a touch driving electrode TE1 and a touch sensing electrode TE2 for mutual capacitance touch mode. For example, one of the touch driving electrode TE1 and the touch sensing electrode TE2 is a touch driving electrode, and the other is a touch sensing electrode. The touch trace 20 is disposed on the side of the encapsulation layer EN away from the substrate 101 and is electrically connected to the touch electrode TE for electrically connecting the touch electrode TE to the driving circuit DIC located in the peripheral region NA.

[0064] For example, such as Figure 2 and Figure 3 As shown, the touch trace 20 includes a first sub-section 201 and a second sub-section 202 that are electrically connected, such as... Figure 3As shown, the boundary line between the first sub-part 201 and the second sub-part 202 is S2. The surface of the substrate 101 near the touch trace 20 is the first surface 101A. The distance between the first sub-part 201 and the first surface 101A is less than the distance between the second sub-part 202 and the first surface 101A. For example, the second sub-part 202 includes a first height portion 2021 and a second height portion 2022 that are electrically connected, such as... Figure 3 As shown, the dividing line between the first height portion 2021 and the second height portion 2022 is S1. The first height portion 2021 is located between the first sub-portion 201 and the second height portion 2022. The height of the first height portion 2021 relative to the first surface 101A is less than the height of the second height portion 2022 relative to the first surface 101A. (Combined) Figure 2 and Figure 3 The line width of each position of the first height portion 2021 is inversely proportional to the height of each position of the first height portion 2021 relative to the first surface 101A, and the line width of each position of at least a portion of the second height portion 2022 is directly proportional to the height of each position of the second height portion 2022 relative to the first surface 101A.

[0065] During the manufacturing process of the display panel, in the first height section 2021, as the height of the first height section 2021 gradually increases, the distance between the surface of the touch trace 20 and the exposure light source gradually decreases. This results in the linewidth of the touch traces with higher heights being smaller than the linewidth of the touch traces with lower heights; that is, as the height of the first height section 2021 increases, the linewidth of the touch traces becomes smaller and smaller. To avoid the risk of breakage due to the thinning of the touch trace linewidth, linewidth compensation begins at the second height section 2022. That is, in the second height section 2022, as the height of the second height section 2022 gradually increases, the linewidth of the second height section 2022 also gradually increases to compensate for the linewidth and avoid defects such as breakage of the touch trace 20.

[0066] It should be noted that, in the embodiments of this disclosure, the linewidth of a structure represents the width of the structure perpendicular to its extension direction. For example, as... Figure 2 As shown, for touch trace 20, its extension direction is vertical as shown in the figure, so its line width is the width of touch trace 20 in the horizontal direction as shown in the figure. For example, as Figure 2 As shown, for the organic structure 1020 / barrier 10 (detailed explanation later), its extension direction is the horizontal direction in the figure, and its line width is the width of the organic structure 1020 / barrier 10 in the vertical direction in the figure.

[0067] For example, in some embodiments, the average linewidth of the first sub-part 201 is smaller than the average linewidth of the second sub-part 202. For example, in the second sub-part 202, the average linewidth of the first height portion 2021 is smaller than the average linewidth of the second height portion 2022. As a result, the higher height portion 2022 has a higher average linewidth, thereby avoiding defects such as breakage that may occur during the manufacturing process due to the close proximity of the second height portion 2022 to the exposure light source.

[0068] It should be noted that, in the embodiments of this disclosure, the average linewidth of a structure refers to the average linewidth of the structure at various locations.

[0069] For example, in some embodiments, such as Figure 2 As shown, the maximum linewidth of the first height section 2021 is D, and the maximum linewidth of the second height section 2022 is L. The ratio of the maximum linewidth D of the first height section 2021 to the maximum linewidth L of the second height section 2022 ranges from 0.50 to 0.95, for example, 0.55, 0.60, 0.65, or 0.70. Within this width range, it is possible to prevent short circuits between adjacent touch traces 20, and to avoid defects such as breakage that may occur in the taller second height section 2022.

[0070] For example, in some embodiments, the first height portion 2021 and the first sub-portion 201 are adjacent. The first sub-portion 201 has a uniform linewidth equal to the maximum linewidth D of the first height portion 2021, i.e., the linewidth corresponding to the boundary line S2 between the first sub-portion 201 and the first height portion 2021. For example, D can range from 7.0 μm to 9.0 μm, such as 7.5 μm, 8.0 μm, or 8.5 μm. For example, the linewidth of the first height portion 2021 closer to the first sub-portion 201 (i.e., D) is greater than the linewidth of the first height portion 2021 farther from the first sub-portion 201 (i.e., W).

[0071] For example, the maximum linewidth L of the second height section 2022 after compensation depends on the maximum height of the second height section 2022. Considering that the spacing between adjacent touch traces 20 in the display panel is approximately 30μm, if the compensated linewidth is too large, it may cause short circuits between adjacent touch traces 20. Therefore, the range of L can be 12.0μm to 14.0μm, such as 12.5μm, 13.0μm, or 13.5μm. The ratio of D to L is D / L = 0.5 to 0.75. If the value of D / L is less than 0.5, it may cause short circuits between adjacent touch traces 20; if the value of D / L is greater than 0.75, the linewidth compensation effect will be insignificant, and the risk of trace breakage cannot be effectively avoided.

[0072] For example, in some embodiments, such as Figure 3As shown, the height of the second sub - part 202 corresponding to the demarcation line S1 between the first height part 2021 and the second height part 2022 with respect to the first surface 101A is H, as Figure 2 shown, the line width of the second sub - part 2022 corresponding to the demarcation line S1 is W, then H / W = 0.150 - 0.375, such as 0.200, 0.250 or 0.300, etc. Within the above - mentioned value range, the line width and height of the second sub - part 202 reach a balance, which can help to prevent short - circuits between adjacent touch traces 20 and avoid defects such as possible fractures in the second height part 2022 with a higher height.

[0073] For example, in some embodiments, the height H corresponding to the demarcation line S1 between the first height part 2021 and the second height part 2022 can be 1.5μm - 2.0μm, such as 1.8μm, etc., and the line width W can be 8.0μm - 10.0μm, such as 8.5μm, 9.0μm or 9.5μm, etc. For example, H can be used as a threshold height. If the height of the second height part 2022 exceeds the threshold height H, then the second height part 2022 needs line - width compensation. If the height of the first height part 2021 is lower than the threshold height H, then the first height part 2021 does not need line - width compensation.

[0074] For example, as Figure 3 shown, the height of the second sub - part 202 at a certain position with respect to the first surface 101A is h, the angle between the surface of the second sub - part 202 away from the substrate 101 and the first surface 101A is θ, and the line width of the second sub - part 202 at the above - mentioned position is d, then 0 < H < 3μm, 0 < θ < 30°; the compensation width of d with respect to W is Δd, then:

[0075] Δd=(d - W)=K*(h - H) / tanθ, where 0.5 < K < 10.

[0076] It can be seen that the compensation width Δd of d with respect to W is related to factors such as the height of the compensation position, the threshold height H, and the slope angle of the second sub - part 202. Therefore, the compensation width Δd can be determined according to the above - mentioned relational formula.

[0077] For example, in some embodiments, 1μm < H < 2.5μm, 15° < θ < 25°; the compensation width of d with respect to W is Δd, then Δd=(d - W)=K*(h - H) / tanθ, where 0.5 < K < 2.

[0078] For example, in some embodiments, 1.2μm < H < 1.7μm, 17° < θ < 23°; the compensation width of d with respect to W is Δd, then Δd=(d - W)=K*(h - H) / tanθ, where 0.8 < K < 1.3.

[0079] With the parameters designed above, the compensation width Δd can achieve a better compensation effect.

[0080] For example, in some embodiments, such as Figure 2 and Figure 3 As shown, the display panel also includes an organic structure 1020, which is at least partially located in the peripheral region NA. For example, a touch trace 20 is disposed on the side of the organic structure 1020 away from the substrate 101, and at least one edge of the organic structure 1020 intersects the extending direction of the touch trace 20. The organic structure 1020 includes an organic ramp portion 1021 and an organic flat portion 1022. In this case, the touch trace 20 will ramp up on the organic structure 1020, such as... Figure 3 As shown.

[0081] For example, in some embodiments, such as Figure 3 As shown, the second sub-part 202 includes a ramp portion 203 and a flat portion 204. The ramp portion 203 includes a first height portion 2021 (e.g., the entire first height portion 2021) and a portion of a second height portion 2022. The flat portion 204 includes another portion of the second height portion 2022. For example, the slope of the ramp portion 203 of the second sub-part 202 is substantially the same as that of the organic ramp portion 1021, that is, the angle between the ramp portion 203 of the second sub-part 202 and the first surface 101A is substantially the same as the angle between the organic ramp portion 1021 and the first surface 101A, shown as θ in the figure. For example, the orthographic projection of the ramp portion 203 of the second sub-part 202 on the substrate 101 overlaps with the orthographic projection of the organic ramp portion 1021 on the substrate 101; the orthographic projection of the flat portion 204 of the second sub-part 202 on the substrate 101 overlaps with the orthographic projection of the organic flat portion 1022 on the substrate 101.

[0082] For example, in some embodiments, such as Figure 3 As shown, the slope of the organic slope 1021 can change continuously, and the slope of the slope 203 can also change continuously.

[0083] For example, Figure 5 Another schematic cross-sectional view of the organic structure is shown, in some other embodiments, such as Figure 5 As shown, the organic slope portion 1021 includes a first slope sub-portion 10211 and a second slope sub-portion 10212. The second slope sub-portion 10212 is located on the side of the first slope sub-portion 10211 facing the organic flat portion 1022. The average slope of the first slope sub-portion 10211 is greater than the average slope of the second slope sub-portion 10212, that is, the first slope sub-portion 10211 and the second slope sub-portion 10212 exhibit different tilting trends.

[0084] It should be noted that, in the embodiments of this disclosure, the average slope of a structure refers to the average value of the tangent of the angle between the tangent of the structure at various locations and the first surface 101A.

[0085] For example, in some embodiments, such as Figure 1 As shown, the organic structure 1020 includes a barrier 10 that at least partially surrounds the display area AA, including a first barrier portion 10A located on at least one side (e.g., the lower side) of the display area AA. For example, the peripheral area NA includes a bending area B with a bending axis BX. The bending area B can be bent around the bending axis BX to bend a portion of the peripheral area NA to the non-display side of the display panel, thereby reducing the bezel of the display panel and increasing the screen-to-body ratio. For example, as... Figure 1 As shown, the first barrier portion 10A is located between the display area AA and the bending area B. The touch trace 20 includes a first trace portion 20A (e.g., the portion of the touch trace 20 located below the display area AA). The extension direction of the first trace portion 20A intersects with the extension direction of the first barrier portion 10A, for example, perpendicularly. At least a portion of the orthographic projection of the first trace portion 20A on the substrate 101 overlaps with the orthographic projection of the first barrier portion 10A on the substrate 101, that is, at least a portion of the first trace portion 20A extends through the first barrier portion 10A.

[0086] For example, Figure 6 It shows Figure 1 The image shows an enlarged view of the display panel within the dashed box F2. Figure 6 As shown, the first barrier section 10A includes a plurality of sub-barriers 10B arranged at intervals in a direction away from the display area AA. Figure 6 Two sub-barriers 10B are shown as an example. In other embodiments, the number of sub-barriers 10B can be more. The embodiments of this disclosure do not limit the number of sub-barriers 10B. The first sub-part 201 includes a first portion 201' of the first trace portion 20A located between adjacent sub-barriers 10B among the plurality of sub-barriers 10B. The second sub-part 202 includes a second portion 202' of the first trace portion 20A located on the side of the plurality of sub-barriers 10B away from the substrate 101.

[0087] For example, such as Figure 6 As shown, the length L1 of the first part 201' in its extending direction (i.e., the length L1 of the first part 201' in its extending direction) Figure 6 The length in the vertical direction) and the width L2 in the vertical direction of its extension direction (i.e., the first part 201' in Figure 6 The ratio of the width in the horizontal direction is in the range of 1.4 to 3.4, such as 1.5, 2.0, 2.5 or 3.0.

[0088] For example, such as Figure 6As shown, the ratio of the length L1 of the first part 201' in its extending direction to the width Wd of each of the multiple sub-retaining walls 10B ranges from 0.7 to 1.3, for example, 0.8, 0.9, or 1.1. The direction in which the width Wd of the multiple sub-retaining walls 10B lies is perpendicular to the extending direction of the multiple sub-retaining walls 10B, and the extending direction of the multiple sub-retaining walls 10B is... Figure 6 The horizontal direction in the middle.

[0089] Within the above value range, the position and size relationship between the touch traces and multiple sub-walls 10B can be effectively balanced. This avoids short circuits between adjacent touch traces 20, as well as the risk of some touch traces breaking due to excessive height, while ensuring that the functions of multiple sub-walls 10B are not affected.

[0090] For example, such as Figure 4 As shown, the driving circuit layer 102 includes a pixel driving circuit whose thin-film transistor T includes an active layer 102A, a gate 102B, a source 102C, and a drain 102D, etc., and a storage capacitor C includes a first capacitor electrode C1 and a second capacitor electrode C2. The light-emitting device EM includes a first electrode 104, a second electrode 106, and a light-emitting material layer 105 between the first electrode 104 and the second electrode 106. The first electrode 104 is electrically connected to the source 102C of the thin-film transistor T. For example, the first electrode 104 is the anode of the light-emitting device, and the second electrode 106 is the cathode of the light-emitting device. For example, the first capacitor plate C1 is disposed in the same layer as the gate 102B.

[0091] For example, a pixel driving circuit can be configured as a 2T1C (two thin-film transistors and one storage capacitor) or a 6T1C (six thin-film transistors and one storage capacitor) structure, thereby including multiple thin-film transistors, which have, for example, Figure 4 The stacked structures shown are similar to or identical to the structures shown. Figure 4 The image only shows a thin-film transistor that is directly connected to the light-emitting device EM. This thin-film transistor can be a driving thin-film transistor or a light-emitting control thin-film transistor, etc.

[0092] It should be noted that, in the embodiments of this disclosure, "co-layer configuration" refers to two functional layers or structural layers being formed on the same layer and made of the same material in the layered structure of the display substrate. That is, in the manufacturing process, the two functional layers or structural layers can be formed from the same material layer, and the required patterns and structures can be formed through the same patterning process. "Co-layer configuration" can simplify the manufacturing process of the display panel.

[0093] For example, such as Figure 4As shown, the driving circuit layer 102 may further include a first gate insulating layer 1024 disposed on the active layer 102A, a second gate insulating layer 1025 disposed on the gate electrode 102B, an interlayer insulating layer 1026 disposed on the second capacitor electrode C2, a passivation layer 1027 disposed on the source electrode 102C and the drain electrode 102D, and a first planarization layer 109 for planarizing the pixel driving circuit. The first planarization layer 109 and the passivation layer 1027 have vias exposing the source electrode 102C, and the first electrode 104 is electrically connected to the source electrode 102C through these vias.

[0094] For example, such as Figure 4 As shown, the display panel may also include structures such as a pixel defining layer 107 and spacers 108 for defining multiple sub-pixels. The pixel defining layer 107 has multiple sub-pixel openings, each sub-pixel opening exposing the first electrode 104 of the light-emitting device EM of a sub-pixel. The light-emitting material layer 105 and the second electrode 106 are at least partially located in the sub-pixel opening.

[0095] For example, such as Figure 4 As shown, in some embodiments, the encapsulation layer EN includes a first inorganic layer 311, a first organic layer 312, a second inorganic layer 313, and a third inorganic layer 314 stacked sequentially. The first organic layer 312 is covered (intercalated) by the first inorganic layer 311 and the second inorganic layer 313. For example, in some embodiments, the encapsulation layer EN may only include the first inorganic layer 311, the first organic layer 312, and the second inorganic layer 313 stacked sequentially, without including the third inorganic layer 314. The embodiments of this disclosure do not limit the specific structure of the encapsulation layer EN.

[0096] For example, in the manufacturing process of a display panel, the first organic layer 312 in the encapsulation layer EN can be formed by inkjet printing. In this case, the barrier 10 can prevent the first organic layer 312 from overflowing into the surrounding area outside the barrier 10 during the printing process. Multiple sub-barriers 10B can improve the blocking effect of the barrier 10. For example, as Figure 1 As shown, the retaining wall 10 can be set around the display area AA.

[0097] For example, in some embodiments, the barrier 10 may be disposed on the same layer as at least one of the first planarization layer 109, the pixel defining layer 107, and the spacer 108. For example, the barrier 10 may be disposed on the same layer as the first planarization layer 109 and the pixel defining layer 107, or the barrier 10 may be disposed on the same layer as the first planarization layer 109 and the spacer 108, or the barrier 10 may be disposed on the same layer as the first planarization layer 109, the pixel defining layer 107, and the spacer 108.

[0098] For example, when the barrier wall 10 includes multiple sub-barrier walls 10B, the stacked structures of the multiple sub-barrier walls 10B can be different. For example, one sub-barrier wall 10B can be disposed on the same layer as the pixel defining layer 107 and the spacer 108, and another sub-barrier wall 10B can be disposed on the same layer as the first planarization layer 109, the pixel defining layer 107 and the spacer 108, etc. The embodiments of this disclosure do not limit the specific structure of the barrier wall 10.

[0099] For example, in some embodiments, such as Figure 1 As shown, the display panel may also include a first power trace VDD for transmitting a high potential. For example, the first power trace VDD may be disposed on the same layer as the source 102C and the drain 102D; or, in some embodiments, the first power trace VDD may include a first part and a second part connected in parallel, the first part being disposed on the same layer as the source 102C and the drain 102D, and the second part being disposed on the same layer as the first electrode 104.

[0100] For example, such as Figure 1 As shown, the display panel may also include a second power trace VSS for transmitting a low potential. For example, the second power trace VSS may be disposed on the same layer as the source 102C and the drain 102D. Alternatively, the second power trace VSS may include a first part and a second part connected in parallel, the first part being disposed on the same layer as the source 102C and the drain 102D, and the second part V12 being disposed on the same layer as the first electrode 104.

[0101] For example, in other embodiments, such as Figure 11 As shown, a connection electrode 1041 and a second planarization layer 110 may also be present between the light-emitting device EM and the thin-film transistor T. The first electrode 104 of the light-emitting device EM is electrically connected to the source electrode 102C through the connection electrode 103. For example, the first planarization layer 109 and the passivation layer 1027 have vias exposing the source electrode 102C, and the connection electrode 1041 is electrically connected to the source electrode 102C through these vias. The second planarization layer 110 has vias exposing the connection electrode 1041, and the first electrode 104 is electrically connected to the connection electrode 1041 through these vias. For example, the first power supply trace VDD may include a first part, a second part, and a third part connected in parallel. The first part is disposed on the same layer as the source electrode 102C and the drain electrode 102D, the second part is disposed on the same layer as the first electrode 104, and the third part is disposed on the same layer as the connection electrode 1041. Similarly, the second power supply trace VSS may also include a first part, a second part, and a third part connected in parallel. The first part is arranged on the same layer as the source 102C and the drain 102D, the second part is arranged on the same layer as the first electrode 104, and the third part is arranged on the same layer as the connecting electrode 1041.

[0102] For example, for such Figure 11In the display panel shown, the barrier 10 can be disposed on the same layer as at least one of the first planarization layer 109, the second planarization layer 110, the pixel defining layer 107, and the spacer 108. For example, the barrier 10 can be disposed on the same layer as the first planarization layer 109, the second planarization layer 110, and the pixel defining layer 107, or the barrier 10 can be disposed on the same layer as the first planarization layer 109, the second planarization layer 110, and the spacer 108, etc. Similarly, when the barrier 10 includes multiple sub-barriers 10B, the stacked structure of the multiple sub-barriers 10B can be different. For example, one sub-barrier 10B can be disposed on the same layer as the pixel defining layer 107 and the spacer 108, and another sub-barrier 10B can be disposed on the same layer as the first planarization layer 109, the second planarization layer 110, the pixel defining layer 107, and the spacer 108, etc. The embodiments of this disclosure do not limit the specific structure of the barrier 10.

[0103] For example, in some embodiments, such as Figure 1 As shown, the display panel may also include a data line DL electrically connected to the pixel driving circuit. For example, the data line DL may be electrically connected to the drain 102D of the thin-film transistor T and configured to provide data signals to the pixel driving circuit. For example, the peripheral region NA also includes a fan-out data signal line DCL, which is electrically connected to the data line DL and is used to electrically connect the data line DL to the driving circuit DIC located in the peripheral region NA. For example, the orthographic projection of the fan-out data signal line DCL on the substrate 101 at least partially overlaps with the orthographic projection of the first barrier portion 10A on the substrate 101, and the orthographic projection of the fan-out data signal line DCL on the substrate 101 at least partially overlaps with the orthographic projection of the first trace portion 20A on the substrate 101.

[0104] For example, in some embodiments, the fan-out data signal line DCL can be disposed on the same layer as the gate 102B of the thin-film transistor T and the first capacitor electrode C1 of the storage capacitor C, or on the same layer as the second capacitor electrode C2 of the storage capacitor C.

[0105] For example, in some embodiments, such as Figure 1 As shown, at least part of the fan-out data signal line DCL extends in a direction that intersects the extension direction of the first baffle portion 10A and the extension direction of the first wiring portion 20A. For example, the portion of the fan-out data signal line DCL between the display area AA and the bending area B extends obliquely relative to the edge of the display area AA. The extension direction of this portion intersects both the extension direction of the first baffle portion 10A and the extension direction of the first wiring portion 20A.

[0106] For example, such as Figure 1 As shown, the extending directions of the first retaining wall portion 10A and the first wiring portion 20A are substantially perpendicular. For example, in Figure 1In the example shown, the first retaining wall portion 10A extends in the horizontal direction shown in the figure, and the first wiring portion 20A extends in the vertical direction shown in the figure.

[0107] For example, in some embodiments, such as Figure 4 and Figure 8 As shown, the touch trace 20 includes a first sub-trace layer 21 and a second sub-trace layer 22 located on the side of the first sub-trace layer 21 away from the substrate 101. Figure 8 As shown, the display panel also includes a touch insulating layer 30, which is disposed between the first sub-routing layer 21 and the second sub-routing layer 22, and includes a via Q. The first sub-routing layer 21 and the second sub-routing layer 22 are electrically connected through the via Q. For example, in a direction perpendicular to the first surface 101A, the via Q at least partially overlaps with the first barrier portion 10A.

[0108] For example, such as Figure 6 and Figure 7 As shown, in some examples, the orthographic projection of via Q on the substrate 101 may lie within the orthographic projection of the first barrier portion 10A on the substrate 101. For example, the orthographic projection of via Q on the substrate 101 lies within the orthographic projection of the second height portion 2022 on the substrate 101.

[0109] For example, in some examples, the ratio of the area of ​​the orthographic projection of the via Q onto the substrate 101 to the area of ​​the orthographic projection of the second height portion 2022 onto the substrate 101 is greater than 0.2 and less than 0.8, for example, 0.4, 0.6, or 0.7. Thus, the via Q has sufficient dimensions to ensure the electrical connection between the first sub-routing layer 21 and the second sub-routing layer 22.

[0110] For example, in some embodiments, such as Figure 7 As shown, the boundary line S1 of the first height portion 2021 and the second height portion 2022 is substantially flush with at least one boundary line S3 of the via Q. That is, the orthographic projection of the boundary line S1 of the first height portion 2021 and the second height portion 2022 on the substrate 101 at least partially overlaps with the orthographic projection of at least one boundary line S3 of the via Q on the substrate 101.

[0111] For example, in some examples, such as Figure 4 As shown, the side of the second sub-layout layer 22 away from the substrate 101 also has a protective cover plate 316, such as a glass cover plate, to protect the touch structure and form the touch surface. For example, a buffer layer 315 may also be provided between the touch trace 20 and the encapsulation layer EN to facilitate the formation of the touch electrode TE and the touch trace 20. For example, in some other embodiments, the buffer layer 315 may not be provided, and the third inorganic layer 314 may be reused as the buffer layer.

[0112] For example, in some embodiments, such as Figure 8 As shown, the display panel may further include a shielding structure 60, which shields traces located above and below the shielding structure 60 to prevent signal interference. For example, in some examples, the shielding structure 60 may shield touch traces 20 located above the shielding structure 60 and traces such as fan-out data signal lines DCL located below the shielding structure 60, which are used to electrically connect circuits for the display area AA and driving circuits DIC. For example, the orthographic projection of the shielding structure 60 on the substrate 101 at least partially overlaps with the orthographic projection of at least one of the plurality of sub-barriers 10B on the substrate 101.

[0113] For example, in some embodiments, such as Figure 8 As shown, the shielding structure 60 may include a first shielding structure 61 and a second shielding structure 62, wherein the height of the first shielding structure 61 relative to the first surface 101A is greater than the height of the second shielding structure 62 relative to the first surface 101A. For example, in a direction perpendicular to the first surface 101A, the boundary line S1 between the first height portion 2021 and the second height portion 2022 at least partially overlaps with the first shielding structure 61.

[0114] For example, in some embodiments, such as Figure 8 As shown, at least one of the plurality of sub-barriers 10B includes a first sub-film layer 1022-1 and a second sub-film layer 1022-2 located on the side of the first sub-film layer 1022-1 away from the substrate 101. A first shielding structure 61 is located between the first sub-film layer 1022-1 and the second sub-film layer 1022-2. A second shielding structure 62 is located on the side of the second sub-film layer 1022-2 close to the substrate 101. In the direction perpendicular to the substrate 101, the second shielding structure 62 does not overlap with the first sub-film layer 1022-1, so that the first shielding structure 61 and the second shielding structure 62 can achieve shielding effects at different positions.

[0115] For example, in some embodiments, such as Figure 8 As shown, in the direction parallel to the first surface 101A, the ratio of the minimum distance L3 (i.e., the horizontal distance L3 in the figure) between the boundary line S1 of the first height portion 2021 and the second height portion 2022 and the edge S5 of the first shielding structure 61 to the width L4 of the first shielding structure 61 in the extension direction of the touch trace 20 (i.e., the horizontal direction in the figure) ranges from 0.3 to 0.6, for example, 0.4 or 0.5. With this configuration, the first shielding structure 61 can fully achieve its shielding function.

[0116] For example, in some embodiments, the shielding structure 60 can be a first power supply trace VDD or a second power supply trace VSS. In this case, the first sub-film layer 1022-1 can be disposed in the same layer as the source electrode 102C and the drain electrode 102D, and the second sub-film layer 1022-2 can be disposed in the same layer as the first electrode 104; or, in the display panel having such... Figure 11 In the structure shown, the first sub-film layer 1022-1 can also be disposed in the same layer as the connecting electrode 1041, and the second sub-film layer 1022-2 can be disposed in the same layer as the first electrode 104; or, the first sub-film layer 1022-1 can be disposed in the same layer as the source electrode 102C and the drain electrode 102D, and the second sub-film layer 1022-2 can be disposed in the same layer as the connecting electrode 1041.

[0117] For example, in some embodiments, Figure 9 It shows Figure 1 Another enlarged view of the display panel in the dashed box F2 section. (See attached image.) Figure 9 As shown, the touch trace 20 may further include a third sub-section 203 and a fourth sub-section 204. The organic structure also includes a first organic structure 40, which covers the display area AA and part of the peripheral area NA. The first organic structure 40 is located on the side of the barrier 10 closest to the display area AA and spaced apart from the barrier 10. The third sub-section 203 is located between the first organic structure 40 and the barrier 10. The fourth sub-section 204 is located on the side of the first organic structure 40 away from the substrate 101, meaning that at least a portion of the touch trace 20 extends through the first organic structure 40. In this case, the height of the fourth sub-section 204 relative to the first surface 101A is greater than the height of the third sub-section 203 relative to the first surface 101A. For example, the linewidth of at least a portion of the fourth sub-section 204 at each location is inversely proportional to the distance of the fourth sub-section 204 from the first surface 101A at each location.

[0118] For example, such as Figure 9 As shown, the edge of the first organic structure 40 near the retaining wall 10 intersects the extending directions of the third sub-section 203 and the fourth sub-section 204. For example, the average line width of the fourth sub-section 204 is smaller than the average line width of the third sub-section 203.

[0119] For example, corresponding to Figure 4 The display panel shown can have its first organic structure 40 disposed on the same layer as at least one of the first planarization layer 109, pixel defining layer 107, and spacer 108; corresponding to Figure 11 The display panel shown may have the first organic structure 40 disposed on the same layer as at least one of the first planarization layer 109, the second planarization layer 110, the pixel defining layer 107, and the spacer 108. The embodiments of this disclosure do not limit the specific structure of the first organic structure 40.

[0120] For example, in some embodiments, such as Figure 9 As shown, the touch trace may further include a fifth sub-section 205 and a sixth sub-section 206. The organic structure also includes a second organic structure 50. For example, the second organic structure 50 covers the bending area B. The second organic structure 50 is located on the side of the barrier 10 away from the display area AA and is spaced apart from the barrier 10. The fifth sub-section 205 is located between the barrier 10 and the second organic structure 50, and the sixth sub-section 206 is located on the side of the second organic structure 50 away from the substrate 101, meaning that at least a portion of the touch trace 20 also extends through the second organic structure 50. In this case, the height of the sixth sub-section 206 relative to the first surface 101A is greater than the height of the fifth sub-section 205 relative to the first surface 101A. For example, the linewidth of at least a portion of the sixth sub-section 206 at each location is inversely proportional to the distance of the sixth sub-section 206 from the first surface 101A at each location.

[0121] For example, such as Figure 9 As shown, the edge of the second organic structure 50 near the retaining wall 10 intersects the extending directions of the fifth sub-section 205 and the sixth sub-section 206. For example, the average line width of the sixth sub-section 206 is smaller than the average line width of the fifth sub-section 205.

[0122] For example, corresponding to Figure 4 The display panel shown can have the second organic structure 50 disposed on the same layer as at least one of the first planarization layer 109, the pixel defining layer 107, and the spacer 108; corresponding to Figure 11 In the display panel shown, the second organic structure 50 can be disposed on the same layer as at least one of the first planarization layer 109, the second planarization layer 110, the pixel defining layer 107, and the spacer 108. The embodiments of this disclosure do not limit the specific structure of the second organic structure 50.

[0123] For example, Figure 10 It shows Figure 9 The diagram shows a cross-section of the display panel along the PP line, and for simplicity and clarity, only one retaining wall 10 is shown. Figure 10As shown, the slope of the first organic structure 40 near the retaining wall 10 forms a first slope angle θ1 with the first surface 101A; the slope of the second organic structure 50 near the retaining wall 10 forms a second slope angle θ2 with the first surface 101A; and the slope of the retaining wall 10 forms a third slope angle θ with the first surface 101A. The third slope angle θ can represent either the slope of the retaining wall 10 near the first organic structure 40 or the slope of the retaining wall 10 near the second organic structure 50. For example, the difference between the first slope angle θ1 and the third slope angle θ is less than or equal to 20°; and / or the difference between the second slope angle θ2 and the third slope angle θ is less than or equal to 20°. Therefore, the slope formed by the first organic structure 40 and the slope formed by the retaining wall 10 are relatively close, and the slope formed by the second organic structure 50 and the slope formed by the retaining wall 10 are also relatively close, which helps the touch wiring 20 to be reliably formed on the first organic structure 40, the retaining wall 10 and the second organic structure 50.

[0124] For example, in some examples, the angle range of the first slope angle θ1, the second slope angle θ2, and the third slope angle θ can be 10°-40°, such as 20°, 25°, or 30°.

[0125] For example, in embodiments of this disclosure, the various functional structures in the display panel can be formed using appropriate materials. For example, the substrate 101 can be a flexible substrate such as polyimide (PI) or a rigid substrate such as a quartz substrate. For example, in some examples, the substrate 101 can be formed as a multilayer PI stacked structure. For example, a buffer layer 103 can also be formed on the substrate 101, and the buffer layer 103 can be made of inorganic materials such as silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON). For example, the active layer 102A can be an amorphous silicon layer, a polycrystalline silicon layer, or a metal oxide semiconductor layer (e.g., an IGZO layer). For example, the polycrystalline silicon can be high-temperature polycrystalline silicon or low-temperature polycrystalline silicon. The gate 102B, source 102C, and drain 102D can be made of metal materials or alloy materials such as copper (Cu), aluminum (Al), and titanium (Ti), and can be formed as a single-layer structure or a multilayer structure, such as a titanium / aluminum / titanium three-layer structure. The first electrode 104 can be made of transparent metal oxides such as indium tin oxide (ITO), indium zinc oxide (IZO), and gallium zinc oxide (GZO), while the second electrode 106 can be made of metals such as lithium (Li), aluminum (Al), magnesium (Mg), and silver (Ag). The connecting electrode 1041 can be made of metals or alloys such as copper (Cu), aluminum (Al), and titanium (Ti).

[0126] For example, the material of each of the first inorganic layer 311, the second inorganic layer 313, and the third inorganic layer 314 may include at least one inorganic material such as silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON). The first organic layer 312 includes organic materials such as polyimide and resin. For example, the first gate insulating layer 1024, the second gate insulating layer 1025, the interlayer insulating layer 1026, and the passivation layer 1027 may be made of at least one inorganic material such as silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON), and the materials of the first gate insulating layer 1024, the second gate insulating layer 1025, the interlayer insulating layer 1026, and the passivation layer 1027 may be the same or different. The pixel defining layer 107, spacer 108, first planarization layer 109, and second planarization layer 110 may include organic materials such as polyimide and resin, and the materials of the pixel defining layer 107, spacer 108, first planarization layer 109, and second planarization layer 110 may be the same or different. The embodiments of this disclosure do not specifically limit the materials of the various functional structures of the display panel.

[0127] At least one embodiment of this disclosure also provides a display device, the display substrate including any of the display panels provided in the embodiments of this disclosure. For example, the display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. The embodiments of this disclosure do not limit the specific form of the display device.

[0128] The following points also need to be explained:

[0129] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0130] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0131] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0132] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure shall be determined by the scope of the claims.

Claims

1. A display panel having a display area and a peripheral area surrounding the display area, and comprising: Substrate; A driving circuit layer is disposed on the substrate. The display structure layer is disposed on the side of the driving circuit layer away from the substrate. An encapsulation layer is disposed on the side of the display structure layer away from the substrate. The touch electrode is disposed on the side of the encapsulation layer away from the substrate, and is located at least in the display area; A touch trace is disposed on the side of the encapsulation layer away from the substrate and is electrically connected to the touch electrode; wherein, the touch trace includes a first sub-part and a second sub-part that are electrically connected, the surface of the substrate near the touch trace is a first surface, and the distance between the first sub-part and the first surface is less than the distance between the second sub-part and the first surface. The second sub-part includes an electrically connected first height part and a second height part. The first height part is located between the first sub-part and the second height part. The height of the first height part relative to the first surface is less than the height of the second height part relative to the first surface. The line width of each position of the first height part is inversely proportional to the height of each position of the first height part relative to the first surface. At least some of the line widths of each position of the second height part are directly proportional to the height of each position of the second height part relative to the first surface. The display panel further includes an organic structure, which includes an organic ramp portion and an organic flat portion, wherein the first height portion and the second height portion are located on the side of the organic structure away from the substrate. The orthographic projection of the boundary line between the first height portion and the second height portion on the substrate lies within the orthographic projection of the organic slope portion on the substrate. The height of the second sub-part corresponding to the boundary line between the first height part and the second height part relative to the first surface is H, and the line width of the second sub-part corresponding to the boundary line is W, then H / W = 0.150~0.375; The ratio of the maximum linewidth of the first height section to the maximum linewidth of the second height section ranges from 0.50 to 0.

95.

2. The display panel according to claim 1, wherein, The average line width of the first height section is smaller than the average line width of the second height section.

3. The display panel according to claim 1 or 2, wherein, The average line width of the first sub-part is smaller than the average line width of the second sub-part.

4. The display panel according to claim 1, wherein, The height of the second sub-part corresponding to the boundary line between the first height portion and the second height portion relative to the first surface is H, the linewidth of the second sub-part corresponding to the boundary line is W, the height of the second sub-part relative to the first surface at one position is h, the angle between the surface of the second sub-part away from the substrate and the first surface is θ, and the linewidth of the second sub-part at that position is d. Then 0 <H<3μm,0<θ<30°; If the compensation width of d relative to W is Δd, then Δd = (d - W)= K (h - H) / tanθ, where 0.5 < K < 10.

5. The display panel according to claim 4, wherein, 1μm <H<2.5μm,15°<θ<25°; If the compensation width of d relative to W is Δd, then Δd = (d - W)= K (h - H) / tanθ, where 0.5 < K < 2.

6. The display panel according to claim 5, wherein, 1.2μm <H<1.7μm,17°<θ<23°; If the compensation width of d relative to W is Δd, then Δd = (d - W)= K (h - H) / tanθ, where 0.8 < K < 1.

3.

7. The display panel according to claim 1 or 2, wherein, The organic structure is at least partially located in the peripheral region, the touch trace is disposed on the side of the organic structure away from the substrate, and at least one edge of the organic structure intersects the extension direction of the touch trace.

8. The display panel according to claim 7, wherein, The second sub-section includes a sloping section and a flat section. The sloping section includes a portion of the first height section and a portion of the second height section. The flat section includes another portion of the second height section. The slope of the sloping section of the second sub-section is substantially the same as that of the organic sloping section. The orthographic projection of the slope portion of the second sub-part on the substrate overlaps with the orthographic projection of the organic slope portion on the substrate; the orthographic projection of the flat portion of the second sub-part on the substrate overlaps with the orthographic projection of the organic flat portion on the substrate.

9. The display panel according to claim 7, wherein, The slope of the organic slope changes continuously.

10. The display panel according to claim 7, wherein, The organic slope portion includes a first slope sub-section and a second slope sub-section, the second slope sub-section being located on the side of the first slope sub-section facing the organic flat portion; the average slope of the first slope sub-section is greater than the average slope of the second slope sub-section.

11. The display panel according to claim 7, wherein, The organic structure includes a barrier wall that at least partially surrounds the display area and includes a first barrier wall portion located on at least one side of the display area. The touch trace includes a first trace portion whose extension direction intersects with the extension direction of the first barrier wall portion. At least a portion of the orthographic projection of the first trace portion on the substrate overlaps with the orthographic projection of the first barrier wall portion on the substrate.

12. The display panel according to claim 11, wherein, The first barrier portion includes a plurality of sub-barriers spaced apart in a direction away from the display area. The first sub-barrier includes a first portion of the first trace portion located between adjacent sub-barriers in the plurality of sub-barriers. The second sub-barrier includes a second portion of the first trace portion located on the side of the plurality of sub-barriers away from the substrate.

13. The display panel according to claim 12, wherein, The ratio of the length of the first part in its extension direction to its width in the direction perpendicular to its extension direction ranges from 1.4 to 3.

4.

14. The display panel according to claim 12, wherein, The ratio of the length of the first portion in its extending direction to the width of each of the plurality of sub-retaining walls ranges from 0.7 to 1.3; The width of the plurality of sub-retaining walls is perpendicular to the extension direction of the plurality of sub-retaining walls.

15. The display panel according to claim 11, wherein, The driving circuit layer includes a pixel driving circuit and a data line electrically connected to the pixel driving circuit. The display structure layer includes a light-emitting device. The pixel driving circuit is configured to be electrically connected to the light-emitting device to drive the light-emitting device. The data line is configured to provide data signals to the pixel driving circuit. The peripheral area also includes a fan-out data signal line electrically connected to the data line. The orthographic projection of the fan-out data signal line onto the substrate at least partially overlaps with the orthographic projection of the first baffle portion onto the substrate. The orthographic projection of the fan-out data signal line onto the substrate at least partially overlaps with the orthographic projection of the first trace onto the substrate.

16. The display panel according to claim 15, wherein, At least a portion of the fan-out data signal lines extend in a direction that intersects the extension direction of the first retaining wall portion and also intersects the extension direction of the first wiring portion.

17. The display panel according to claim 16, wherein, The extension directions of the first retaining wall and the first wiring section are basically perpendicular.

18. The display panel according to claim 11, wherein, The touch trace includes a first sub-trace layer and a second sub-trace layer located on the side of the first sub-trace layer away from the substrate. The display panel further includes a touch insulating layer, which is disposed between the first sub-trace layer and the second sub-trace layer and includes a via, through which the first sub-trace layer and the second sub-trace layer are electrically connected; In a direction perpendicular to the first surface, the through hole at least partially overlaps with the first retaining wall portion.

19. The display panel according to claim 18, wherein, The orthographic projection of the via on the substrate is located within the orthographic projection of the second height portion on the substrate.

20. The display panel according to claim 19, wherein, The ratio of the area of ​​the orthogonal projection of the via on the substrate to the area of ​​the orthogonal projection of the second height portion on the substrate is greater than 0.2 and less than 0.

8.

21. The display panel according to claim 18, wherein, The boundary line between the first height portion and the second height portion is substantially flush with at least one boundary line of the via.

22. The display panel according to claim 12, further comprising a shielding structure, wherein, The orthographic projection of the shielding structure onto the substrate at least partially overlaps with the orthographic projection of at least one of the plurality of sub-barriers onto the substrate. The shielding structure includes a first shielding structure and a second shielding structure, wherein the height of the first shielding structure relative to the first surface is greater than the height of the second shielding structure relative to the first surface. In a direction perpendicular to the first surface, the boundary line between the first height portion and the second height portion at least partially overlaps with the first shielding structure.

23. The display panel according to claim 22, wherein, At least one of the plurality of sub-barriers includes a first sub-film layer and a second sub-film layer located on the side of the first sub-film layer away from the substrate, the first shielding structure being located between the first sub-film layer and the second sub-film layer, the second shielding structure being located on the side of the second sub-film layer closer to the substrate, and not overlapping the first sub-film layer in a direction perpendicular to the substrate.

24. The display panel according to claim 22, wherein, In a direction parallel to the first surface, the ratio of the minimum distance between the boundary line of the first height portion and the second height portion and the edge of the first shielding structure to the width of the first shielding structure in the extension direction of the touch trace is in the range of 0.3 to 0.

6.

25. The display panel according to claim 11, wherein, The touch traces also include a third sub-section and a fourth sub-section. The organic structure also includes a first organic structure, which covers the display area and part of the peripheral area. The first organic structure is located on the side of the barrier wall closer to the display area and is spaced apart from the barrier wall. The third sub-section is located between the first organic structure and the barrier wall. The fourth sub-section is located on the side of the first organic structure away from the substrate. At least a portion of the line width of the fourth sub-part at each location is inversely proportional to the distance of the fourth sub-part from the first surface at each location.

26. The display panel according to claim 25, wherein, The edge of the first organic structure near the retaining wall intersects with the extending directions of the third and fourth sub-parts.

27. The display panel according to claim 25, wherein, The average line width of the fourth sub-section is less than the average line width of the third sub-section.

28. The display panel according to claim 25, wherein, The touch traces also include a fifth sub-section and a sixth sub-section, and the organic structure also includes a second organic structure. The second organic structure is located on the side of the barrier away from the display area and is spaced apart from the barrier. The fifth sub-section is located between the barrier and the second organic structure, and the sixth sub-section is located on the side of the second organic structure away from the substrate. At least a portion of the line width of the sixth sub-part at each location is inversely proportional to the distance of the sixth sub-part from the first surface at each location.

29. The display panel according to claim 28, wherein, The edge of the second organic structure near the retaining wall intersects with the extending directions of the fifth and sixth sub-parts.

30. The display panel according to claim 29, wherein, The average line width of the sixth sub-section is less than the average line width of the fifth sub-section.

31. The display panel according to claim 28, wherein, The slope of the first organic structure near the retaining wall forms a first slope angle with the first surface; the slope of the second organic structure near the retaining wall forms a second slope angle with the first surface; and the slope of the retaining wall forms a third slope angle with the first surface. The difference between the first slope angle and the third slope angle is less than or equal to 20°; and / or The difference between the second slope angle and the third slope angle is less than or equal to 20°.

32. A display device comprising the display panel according to any one of claims 1-31.

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