Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises sub-pixels (10) and defining structures (20). Each sub-pixel (10) comprises a light-emitting functional layer (13); and each defining structure (20) is located between light-emitting regions (100) of sub-pixels (10) of different colors, and the thickness of the portion of a light-emitting functional layer (13) located on a defining structure (20) is less than the thickness of the portion of the light-emitting functional layer (13) located in the light-emitting region (100) of a sub-pixel (10). The sub-pixels (10) include sub-pixels (10) of two colors that are arranged in a first direction and disposed adjacently, and the light-emitting region (100) of one of the sub-pixels (10) of two colors comprises a first region (101) and a second region (102), which are arranged in a second direction; and the defining structures (20) include a first defining structure (210), which is located between the light-emitting regions (100) of the sub-pixels (10) of two colors, wherein the first defining structure (210) comprises a first inclined portion (212), an orthographic projection of the first inclined portion (212) on a projection straight line overlaps with an orthographic projection of the first region (101) on the projection straight line, the first inclined portion (212) bends in the direction away from the first region (101), and an extension direction of at least part of the first inclined portion (212) intersects with the first direction and the second direction. By means of setting a bending direction and extension direction of the first inclined portion, the display effect can be improved.

Description

Display substrate and display device

[0001] This application claims priority to Chinese Patent Application No. 202510486597.3, filed on April 17, 2025, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] This disclosure relates to a display substrate and a display device. Background Technology

[0003] Organic light-emitting diode (OLED) display devices have advantages such as being thin and light, having good display effects, high resolution, wide color gamut, low power consumption, and the ability to achieve flexible displays. Therefore, OLED display devices are gradually becoming the mainstream display devices. Summary of the Invention

[0004] This disclosure provides a display substrate and a display device.

[0005] This disclosure provides a display substrate, comprising: a substrate; a plurality of sub-pixels located on the substrate, each sub-pixel including at least a portion thereof including a first electrode, a light-emitting functional layer and a second electrode stacked thereon, the first electrode being located between the light-emitting functional layer and the substrate, the light-emitting functional layer including a plurality of film layers; a defining structure located at least between the light-emitting regions of adjacent and different color sub-pixels, wherein the thickness of the portion of at least a portion of the film layers in the light-emitting functional layer located at at least a portion of the position in the defining structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel. The plurality of sub-pixels includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The light-emitting area of ​​one of the two types of color sub-pixels includes a first area and a second area arranged along a second direction. The orthographic projection of the first area on a projection line extending along the second direction does not overlap with the orthographic projections of the light-emitting areas of other color sub-pixels on the same projection line. The first direction intersects the second direction. The defining structure includes a first defining structure located between the light-emitting areas of the two types of color sub-pixels. The number of first defining structures is plurality of them. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the first area on the same projection line. The first inclined portion bends relative to the main body portion in a direction away from the sub-pixel where the first area is located. The extension direction of at least a portion of the first inclined portion intersects both the first direction and the second direction.

[0006] For example, according to an embodiment of this disclosure, the edge of the first inclined portion protrudes relative to the edge of the first region that is far from the second region.

[0007] For example, according to an embodiment of this disclosure, the plurality of sub-pixels are divided into a plurality of pixel units, each pixel unit including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, the first color sub-pixel and the second color sub-pixel being arranged along the second direction, and the first color sub-pixel and the third color sub-pixel being arranged along the first direction; the two color sub-pixels include sub-pixels located in the same pixel unit, and / or include sub-pixels located in two pixel units respectively arranged adjacent to each other in the first direction; the two color sub-pixels include one of the first color sub-pixel and the second color sub-pixel and the third color sub-pixel, at least one of the first color sub-pixel and the second color sub-pixel including the first region; in the first defining structure, the first inclined portion, relative to at least a portion of the main body portion, bends toward a side close to the center line extending along the second direction of the light-emitting area of ​​the third color sub-pixel, and the extension direction of the at least portion of the first inclined portion intersects with the extension direction of each side of the light-emitting area of ​​the third color sub-pixel.

[0008] For example, according to an embodiment of this disclosure, the plurality of pixel units are divided into a plurality of pixel groups, each pixel group includes pixel units arranged along the second direction, each pixel group includes a first sub-pixel group and a second sub-pixel group arranged along the first direction, the first sub-pixel group includes a plurality of first color sub-pixels and a plurality of second color sub-pixels arranged along the second direction, and the second sub-pixel group includes a plurality of third color sub-pixels arranged along the second direction; in the first defining structure located between the adjacent first sub-pixel groups and the second sub-pixel groups, a gap is provided between two adjacent first defining structures.

[0009] For example, according to an embodiment of this disclosure, the limiting structure further includes a second limiting structure located between the light-emitting areas of the adjacent first color sub-pixel and the second color sub-pixel, the second limiting structure being spaced apart from the first limiting structure, and in the first direction, the size of the light-emitting areas of both the first color sub-pixel and the second color sub-pixel is not greater than the size of the second limiting structure.

[0010] For example, according to an embodiment of this disclosure, the first electrode includes a main electrode and a connecting electrode connected to each other, and the connecting electrode does not overlap with the light-emitting area of ​​the sub-pixel along a direction perpendicular to the substrate; the number of second defining structures is multiple, and at least some of the second defining structures include a bent portion.

[0011] For example, according to an embodiment of this disclosure, the display substrate further includes: at least one auxiliary electrode line, disposed on the same layer as the first electrode and spaced apart, wherein at least a portion of each of the at least one auxiliary electrode line extends along the first direction. Each auxiliary electrode line includes at least one contact pad, the at least one contact pad being electrically connected to the second electrode through a via in a film layer between the contact pad and the second electrode, the film layer including at least one of the light-emitting functional layers.

[0012] For example, according to an embodiment of this disclosure, the defining structure does not overlap with the at least one contact pad in a direction perpendicular to the substrate.

[0013] For example, according to an embodiment of this disclosure, at least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad.

[0014] For example, according to an embodiment of this disclosure, the orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line.

[0015] For example, according to an embodiment of this disclosure, in the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

[0016] For example, according to an embodiment of this disclosure, the display substrate further includes a spacer located on the side of the first electrode away from the substrate. The orthographic projection of the spacer on the substrate does not overlap with the orthographic projection of the at least one auxiliary electrode line on the substrate.

[0017] For example, according to an embodiment of this disclosure, the defining structure between the third color sub-pixel and other adjacent color sub-pixels includes only a first defining structure, and the defining structure between the adjacent first color sub-pixel and the second color sub-pixel includes only a second defining structure.

[0018] For example, according to an embodiment of this disclosure, the second defining structure located between the first color sub-pixel and the second color sub-pixel in the same pixel group is a first type defining structure, and the second defining structure belonging to the first color sub-pixel and the second color sub-pixel in adjacent pixel groups is a second type defining structure. At least one of the first type defining structure and the second type defining structure includes the bent portion, and the shape of the second type defining structure is different from the shape of the first type defining structure. At least one of the opposite ends of the second defining structure in the first direction protrudes relative to the edge of the first electrode of the first color sub-pixel and the second color sub-pixel. The main body includes a recessed portion disposed opposite to the protruding end of the second defining structure, and the orthographic projection of the first defining structure on the projection line and the orthographic projection of the second type defining structure on the projection line do not overlap.

[0019] For example, according to an embodiment of this disclosure, the edge of the first inclined portion away from at least one of the first color sub-pixel and the second color sub-pixel is a first edge, and the edge of the light-emitting area of ​​the third color sub-pixel close to the first color sub-pixel and the second color sub-pixel is a second edge. The second edge extends along the second direction, and the distance between the straight line passing through the first edge and extending along the second direction and the second edge is not greater than 5 micrometers. The edge of the first inclined portion protrudes relative to the edge of the first region away from the second region, and the distance between the two straight lines passing through these two edges and extending along the first direction is not less than 4 micrometers and not greater than half the distance between the light-emitting areas of two adjacent sub-pixels. The distance between the first type-defined structure and the recessed portion is 4 to 7 micrometers.

[0020] For example, according to an embodiment of this disclosure, the dimension of the end of the second defined structure extending beyond the edge of the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel is 5 to 7 micrometers; the distance between the recess and the light-emitting area of ​​the third color sub-pixel is 3 to 5 micrometers.

[0021] For example, according to an embodiment of this disclosure, the distance between the portion of the main body other than the recessed portion and the light-emitting area of ​​the third color sub-pixel is 6 to 10 micrometers, the distance between the portion of the main body other than the recessed portion and the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel is 6 to 10 micrometers, and the width of the first defining structure in the first direction is 3 to 5 micrometers.

[0022] For example, according to an embodiment of this disclosure, two first defining structures located on both sides of the same third color sub-pixel are symmetrically distributed with respect to the center line of the light-emitting area in the third color sub-pixel extending along the second direction.

[0023] For example, according to an embodiment of this disclosure, the main body portion, except for the recessed portion, consists of straight sections extending along the second direction. The first inclined portion includes an inclined segment and a straight segment. The inclined segment is located between the straight segment and the main body portion. The extension direction of the inclined segment intersects both the first direction and the second direction. The straight segment extends along the second direction. The second limiting structure, except for the bent portion, extends along the first direction.

[0024] For example, according to embodiments of this disclosure, at least a portion of the plurality of first defining structures includes at least one first curved portion in the main body portion other than the recessed portion, and at least a portion of the plurality of second defining structures includes at least one second curved portion.

[0025] For example, according to an embodiment of this disclosure, the distances between the light-emitting area of ​​the third color sub-pixel and the recess and the at least one first curved portion are a first distance and a second distance, respectively, wherein the first distance is less than the second distance.

[0026] For example, according to an embodiment of this disclosure, in the second direction, the size of the recess is larger than the size of the at least first curved portion.

[0027] For example, according to an embodiment of this disclosure, the display substrate further includes: at least one auxiliary electrode line, disposed on the same layer as the first electrode and spaced apart, wherein at least a portion of each of the at least one auxiliary electrode line extends along the first direction. Each auxiliary electrode line includes at least one contact pad, the at least one contact pad being electrically connected to the second electrode through a via in a film layer between the contact pad and the second electrode, the film layer including at least one of the light-emitting functional layers.

[0028] For example, according to an embodiment of this disclosure, the defining structure does not overlap with the at least one contact pad in a direction perpendicular to the substrate.

[0029] For example, according to an embodiment of this disclosure, at least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad; the orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the emitting area of ​​the third color sub-pixel on the projection line.

[0030] For example, according to an embodiment of this disclosure, the orthogonal projection of the edge of the second inclined portion onto the projection line is completely located within the orthogonal projection of the luminous area of ​​one of the first color sub-pixels and the second color sub-pixels onto the projection line.

[0031] For example, according to an embodiment of this disclosure, in the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

[0032] For example, according to an embodiment of this disclosure, along a direction perpendicular to the substrate, the at least one auxiliary electrode line overlaps with at least one of the plurality of second defining structures.

[0033] For example, according to an embodiment of this disclosure, the display substrate further includes: spacers located on the side of the first electrode away from the substrate. The spacers are located between the first electrodes of the third color sub-pixels disposed adjacent to each other in the second direction, and there are multiple spacers and multiple contact pads, with the multiple spacers and multiple contact pads alternating in at least one of the first direction and the second direction.

[0034] For example, according to embodiments of this disclosure, the limiting structure further includes a plurality of third limiting structures and a plurality of fourth limiting structures, each third limiting structure surrounding at least the corner of the first electrode of at least one of the first color sub-pixels and the second color sub-pixels, and each fourth limiting structure being located between the first color sub-pixels and the first limiting structure.

[0035] For example, according to an embodiment of this disclosure, each of the second defined structures has opposite ends in the first direction that do not exceed the edges of the first electrodes of at least one of the first color sub-pixels and the second color sub-pixels on both sides of the first direction.

[0036] For example, according to an embodiment of this disclosure, the two first electrodes of the first color sub-pixel and the second color sub-pixel arranged adjacent to each other include four corners that are adjacent to each other. The first corner and the second corner are respectively surrounded by a third defining structure, and the first corner and the second corner are two corners that are opposite to the first color sub-pixel and the second color sub-pixel in an oblique direction, wherein the oblique direction is the direction that intersects with the arrangement direction of the first color sub-pixel and the second color sub-pixel.

[0037] For example, according to an embodiment of this disclosure, a second defining structure and two third defining structures are provided between adjacent first color sub-pixels and second color sub-pixels. The second defining structure includes three parts arranged along the first direction. In the second direction, the first part of the three parts overlaps with one of the two third defining structures, the second part of the three parts does not overlap with either of the two third defining structures, and the third part of the three parts overlaps with the other of the two third defining structures. The first part and the third part extend along the first direction, and the extension direction of the second part intersects both the first direction and the second direction.

[0038] For example, according to an embodiment of this disclosure, the second limiting structure and at least one fourth limiting structure are provided on both sides of the third and fourth corner portions of the four corner portions.

[0039] For example, according to an embodiment of this disclosure, the edge of the first inclined portion that is away from at least one of the first color sub-pixel and the second color sub-pixel is a first edge, and the light-emitting area of ​​the third color sub-pixel includes a second edge extending along the second direction, and the distance between the straight line passing through the first edge and extending along the second direction and the second edge is not greater than 5 micrometers; the edge of the first inclined portion protrudes relative to the edge of the first region that is away from the second region, and the distance between the two straight lines passing through these two edges and extending along the first direction is not less than 4 micrometers and not greater than half the distance between the light-emitting areas of two adjacent sub-pixels.

[0040] For example, according to an embodiment of this disclosure, in the first direction, the size of the light-emitting area of ​​the first color sub-pixel and the size of the light-emitting area of ​​the second color sub-pixel are both no greater than the distance between the two ends of the second defining structure in the first direction.

[0041] For example, according to embodiments of this disclosure, at least one third defining structure includes a substructure extending along the second direction, the third color sub-pixel includes a third edge extending along the first direction, the extension line of the third edge passing through the substructure or being flush with the edge of the substructure; and / or, the extension line of the third edge passing through the fourth defining structure or being flush with the edge of the fourth defining structure.

[0042] For example, according to an embodiment of this disclosure, two first defining structures located on both sides of the same third color sub-pixel are symmetrically distributed with respect to the center line of the light-emitting area in the third color sub-pixel extending along the second direction.

[0043] For example, according to an embodiment of this disclosure, the center of the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel is provided with two third defining structures on one side of the first direction and a fourth defining structure on the other side of the first direction. Each third defining structure surrounds a corner, and a straight line extending along the first direction passes through the gap between the two third defining structures and the first inclined portion.

[0044] For example, according to an embodiment of this disclosure, in at least one first defining structure, the main body is a linear structure extending along the second direction.

[0045] For example, according to embodiments of this disclosure, in at least one second defining structure, all three parts are linear structures; at least one third defining structure includes two substructures extending along the first direction and the second direction respectively, at least a portion of the two substructures being linear structures; and at least one fourth defining structure is a linear structure extending along the second direction.

[0046] For example, according to embodiments of this disclosure, in at least one first defining structure, the main body portion includes at least one first curved portion, at least one second defining structure includes at least one second curved portion, at least one third defining structure includes at least one third curved portion, and at least one fourth defining structure includes at least one fourth curved portion.

[0047] For example, according to an embodiment of this disclosure, the display substrate further includes: at least one auxiliary electrode line, disposed on the same layer as the first electrode and spaced apart, wherein at least a portion of each of the at least one auxiliary electrode line extends along the first direction. Each auxiliary electrode line includes at least one contact pad, the at least one contact pad being electrically connected to the second electrode through a via in a film layer between the contact pad and the second electrode, the film layer including at least one of the light-emitting functional layers.

[0048] For example, according to an embodiment of this disclosure, a third defining structure is provided around two adjacent corners of the first electrode of the sub-pixel in the second direction near the corner of the first electrode of at least one of the first color sub-pixels and the second color sub-pixel.

[0049] For example, according to an embodiment of this disclosure, the defining structure does not overlap with the at least one contact pad in a direction perpendicular to the substrate.

[0050] For example, according to an embodiment of this disclosure, at least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad; the orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the emitting area of ​​the third color sub-pixel on the projection line.

[0051] For example, according to an embodiment of this disclosure, the orthogonal projection of the edge of the second inclined portion onto the projection line is completely located within the orthogonal projection of the luminous area of ​​one of the first color sub-pixels and the second color sub-pixels onto the projection line.

[0052] For example, according to an embodiment of this disclosure, in the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

[0053] For example, according to an embodiment of this disclosure, the display substrate further includes: spacers located on the side of the first electrode away from the substrate. The spacers are located between the first electrodes of the third color sub-pixels disposed adjacent to each other in the second direction, and there are multiple spacers and multiple contact pads, with the multiple spacers and multiple contact pads alternating in at least one of the first direction and the second direction.

[0054] Another embodiment of this disclosure provides a display substrate, comprising: a substrate; a plurality of sub-pixels located on the substrate, each sub-pixel including at least a portion thereof including a first electrode, a light-emitting functional layer and a second electrode stacked thereon, the first electrode being located between the light-emitting functional layer and the substrate, the light-emitting functional layer including a plurality of film layers; a defining structure located at least between the light-emitting regions of adjacent and different color sub-pixels, wherein the thickness of at least a portion of the film layers in the light-emitting functional layer located at at least a portion of the position on the defining structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel. The plurality of sub-pixels includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The defining structure includes a first defining structure located between the light-emitting areas of the two types of color sub-pixels. The number of first defining structures is plurality of them. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on a projection line extending along a second direction does not overlap with the orthographic projection of the light-emitting area of ​​one of the two types of color sub-pixels on the projection line, and the orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the light-emitting area of ​​the other of the two types of color sub-pixels on the projection line. The first direction intersects the second direction. The distance between the light-emitting area of ​​the other of the two types of color sub-pixels and at least a portion of the first inclined portion is a first sub-distance, and the distance between the light-emitting area of ​​the other of the two types of color sub-pixels and at least a portion of the main body portion is a second sub-distance. The first sub-distance is greater than the second sub-distance.

[0055] For example, according to an embodiment of this disclosure, the edge of the first inclined portion protrudes relative to the edge of the light-emitting area of ​​the other of the two color sub-pixels.

[0056] For example, according to an embodiment of this disclosure, the plurality of sub-pixels are divided into a plurality of pixel units, each pixel unit including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, the first color sub-pixel and the second color sub-pixel being arranged along the second direction, and the first color sub-pixel and the third color sub-pixel being arranged along the first direction; the two color sub-pixels include sub-pixels located in the same pixel unit, and / or include sub-pixels located in two pixel units respectively arranged adjacent to each other in the first direction; the two color sub-pixels include one of the first color sub-pixel and the second color sub-pixel and the third color sub-pixel, and the other of the two color sub-pixels includes at least one of the first color sub-pixel and the second color sub-pixel; in the first defining structure, the first inclined portion, relative to at least a portion of the main body portion, bends toward a side close to the center line extending along the second direction of the light-emitting area of ​​the third color sub-pixel, and the extension direction of the at least portion of the first inclined portion intersects with the extension direction of each side of the light-emitting area of ​​the third color sub-pixel.

[0057] For example, according to an embodiment of this disclosure, the plurality of pixel units are divided into a plurality of pixel groups, each pixel group includes pixel units arranged along the second direction, each pixel group includes a first sub-pixel group and a second sub-pixel group arranged along the first direction, the first sub-pixel group includes a plurality of first color sub-pixels and a plurality of second color sub-pixels arranged along the second direction, and the second sub-pixel group includes a plurality of third color sub-pixels arranged along the second direction; in the first defining structure located between the adjacent first sub-pixel groups and the second sub-pixel groups, a gap is provided between two adjacent first defining structures.

[0058] For example, according to an embodiment of this disclosure, the limiting structure further includes a second limiting structure located between adjacent first and second color sub-pixels, the second limiting structure being spaced apart from the first limiting structure, and in the first direction, the size of the light-emitting area of ​​both the first and second color sub-pixels is not greater than the size of the second limiting structure.

[0059] For example, according to an embodiment of this disclosure, the display substrate further includes: at least one auxiliary electrode line, disposed on the same layer as the first electrode and spaced apart, wherein at least a portion of each of the at least one auxiliary electrode line extends along the first direction. Each auxiliary electrode line includes at least one contact pad, the at least one contact pad being electrically connected to the second electrode through a via in a film layer between the contact pad and the second electrode, the film layer including at least one of the light-emitting functional layers.

[0060] For example, according to an embodiment of this disclosure, the defining structure does not overlap with the at least one contact pad in a direction perpendicular to the substrate.

[0061] For example, according to an embodiment of this disclosure, at least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad.

[0062] For example, according to an embodiment of this disclosure, the orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line.

[0063] For example, according to an embodiment of this disclosure, each of the at least one contact pad is located between the first electrodes of a third color sub-pixel disposed adjacent to each other in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of the adjacent first color sub-pixel and the second color sub-pixel.

[0064] For example, according to an embodiment of this disclosure, the display substrate further includes a spacer located on the side of the first electrode away from the substrate. The orthographic projection of the spacer on the substrate does not overlap with the orthographic projection of the at least one auxiliary electrode line on the substrate.

[0065] Another embodiment of this disclosure provides a display device including any of the above-described display substrates. Attached Figure Description

[0066] 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.

[0067] Figure 1 is a partial planar structure schematic diagram of a display substrate provided according to an example of an embodiment of the present disclosure.

[0068] Figure 2 is a schematic diagram of a partial cross-sectional structure cut along line AA' shown in Figure 1.

[0069] Figure 3 is a schematic diagram of a pixel unit and its defined structure in the display substrate shown in Figure 1.

[0070] Figure 4 is a partial planar structure schematic diagram of a display substrate provided according to another example of an embodiment of the present disclosure.

[0071] Figures 5 and 6 are schematic diagrams of partial planar structures of display substrates provided according to different examples of embodiments of the present disclosure.

[0072] Figure 7 is a schematic diagram of a partial cross-sectional structure cut along line BB' shown in Figure 5.

[0073] Figures 8 and 9 are schematic diagrams of partial planar structures of display substrates provided according to different examples of another embodiment of the present disclosure.

[0074] Figure 10 is a schematic diagram of a pixel unit and its defined structure in the display substrate shown in Figure 8.

[0075] Figures 11 and 12 are schematic diagrams of partial planar structures of display substrates provided according to different examples of embodiments of the present disclosure.

[0076] Figure 13 is a schematic block diagram of a display device provided according to another embodiment of the present disclosure. Detailed Implementation

[0077] 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. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0078] 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 an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0079] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include a certain degree of error. Taking into account measurement and errors associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of said value. Unless otherwise specified in the following embodiments of this disclosure, the quantity of a component is implied to mean that the component can be one or more, or can be understood as at least one. "At least one" means one or more, and "more" means at least two.

[0080] In their research, the inventors of this application discovered that when an OLED display substrate displays an image, ideally, if only a portion of the pixel area needs to be illuminated, the pixel areas that should not be illuminated should be completely off-light. However, due to the strong leakage current between the illuminated pixel area and its adjacent pixel areas, the adjacent pixel areas that should not be illuminated will slightly glow under the influence of the leakage current, resulting in pixel "stealing" of light and affecting the display effect.

[0081] This disclosure provides a display substrate and a display device.

[0082] The display substrate provided in this disclosure includes a substrate, a plurality of sub-pixels located on the substrate, and a defining structure. Each sub-pixel, at least some of which are sub-pixels, includes a first electrode, a light-emitting functional layer, and a second electrode stacked thereon. The first electrode is located between the light-emitting functional layer and the substrate. The light-emitting functional layer includes a plurality of film layers. The defining structure is located at least between the light-emitting regions of adjacent sub-pixels of different colors. The thickness of the portion of the film layers in the light-emitting functional layer located at at least a portion of the defined structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel. The plurality of sub-pixels includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The light-emitting area of ​​one of the two color sub-pixels includes a first area and a second area arranged along a second direction. The orthographic projection of the first area on a projection line extending along the second direction does not overlap with the orthographic projections of the light-emitting areas of the other color sub-pixels on the projection line. The first direction intersects the second direction. The defining structure includes a first defining structure located between the light-emitting areas of the two color sub-pixels. The number of first defining structures is plurality of. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the first area on the projection line. The first inclined portion bends relative to the main body portion in a direction away from the sub-pixel where the first area is located. The extension direction of at least a portion of the first inclined portion intersects both the first direction and the second direction.

[0083] In the display substrate provided in this disclosure, while a first limiting structure is set between two color sub-pixels, the bending direction and extension direction of the first inclined portion are set according to the positional relationship between the light-emitting areas of the two color sub-pixels and the first limiting structure. This helps to alleviate the problem of pixel light stealing in the display substrate, while also enabling the second electrode of the sub-pixel to have a large area of ​​conductive channel, avoiding affecting the conductivity of the second electrode of the sub-pixel, thereby improving the display effect of the display substrate.

[0084] The display substrate provided in this disclosure includes a substrate, a plurality of sub-pixels located on the substrate, and a defining structure. Each sub-pixel includes a first electrode, a light-emitting functional layer, and a second electrode stacked thereon. The first electrode is located between the light-emitting functional layer and the substrate. The light-emitting functional layer includes a plurality of film layers. The defining structure is located at least between the light-emitting regions of adjacent sub-pixels of different colors. The thickness of the portion of the film layers in the light-emitting functional layer located at at least a portion of the defined structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel. The plurality of sub-pixels includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The defining structure includes a first defining structure located between the light-emitting areas of the two types of color sub-pixels. There are multiple first defining structures. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on a projection line extending along a second direction does not overlap with the orthographic projection of the light-emitting area of ​​one of the two types of color sub-pixels on the projection line. However, the orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the light-emitting area of ​​the other type of color sub-pixel on the projection line. The first direction intersects the second direction. The distance between the light-emitting area of ​​the other type of color sub-pixel and at least a portion of the first inclined portion is a first sub-distance. The distance between the light-emitting area of ​​the other type of color sub-pixel and at least a portion of the main body portion is a second sub-distance. The first sub-distance is greater than the second sub-distance.

[0085] In the display substrate provided in this disclosure, while a first limiting structure is set between two color sub-pixels, the distance relationship between the first inclined portion and the light-emitting area of ​​the other of the two color sub-pixels is set according to the positional relationship between the light-emitting areas of the two color sub-pixels and the first limiting structure. This helps to alleviate the problem of pixel light stealing in the display substrate, while also enabling the second electrode of the sub-pixel to have a large area of ​​conductive channel, avoiding affecting the conductivity of the second electrode of the sub-pixel, thereby improving the display effect of the display substrate.

[0086] The display substrate and display device provided in the embodiments of this disclosure are described below with reference to the accompanying drawings.

[0087] Figure 1 is a partial planar structural schematic diagram of a display substrate provided according to an example of an embodiment of the present disclosure. Figure 2 is a partial cross-sectional structural schematic diagram taken along line AA' shown in Figure 1.

[0088] As shown in Figures 1 and 2, the display substrate includes a substrate 01, a plurality of sub-pixels 10 located on the substrate 01, and a defining structure 20.

[0089] As shown in Figures 1 and 2, each sub-pixel 10 in at least a portion of the sub-pixels 10 includes a first electrode 11, a light-emitting functional layer 13, and a second electrode 12 stacked together, with the first electrode 11 located between the light-emitting functional layer 13 and the substrate 01. For example, the display substrate includes a display area and a peripheral area surrounding the display area, and a plurality of sub-pixels 10 are located in the display area of ​​the display substrate.

[0090] For example, as shown in FIG2, the light-emitting functional layer 13 includes multiple film layers. For example, the light-emitting functional layer 13 may include a charge generation layer 133 and a light-emitting layer for emitting light. For example, the light-emitting functional layer 13 may be a film layer in an organic light-emitting element. For example, the light-emitting functional layer 13 may include a first light-emitting layer 131, a charge generation layer (CGL) 133, and a second light-emitting layer 132 stacked sequentially, with the charge generation layer 133 located between the first light-emitting layer 131 and the second light-emitting layer 132. The thicknesses of the multiple film layers included in the light-emitting functional layer 13 shown in FIG2 are only for clear illustration of each film layer and do not represent actual dimensions. For example, in the same sub-pixel 10, the first light-emitting layer 131 and the second light-emitting layer 132 may be light-emitting layers that emit the same color of light. For example, in a sub-pixel 10 that emits different colors of light, the first light-emitting layer 131 emits different colors of light. For example, in a sub-pixel 10 that emits different colors of light, the second light-emitting layer 132 emits different colors of light. Of course, the embodiments disclosed herein are not limited to this. For example, in the same sub-pixel 10, the first light-emitting layer 131 and the second light-emitting layer 132 can be light-emitting layers that emit different colors of light. By setting light-emitting layers that emit different colors of light in the same sub-pixel 10, the light emitted by the multiple light-emitting layers included in the sub-pixel 10 can be mixed into white light. The color of the light emitted by each sub-pixel can be adjusted by setting a color filter layer.

[0091] For example, as shown in Figure 2, the film layer between the charge generation layer 133 and the substrate 0101 may include a first light-emitting layer 131 and other functional layers, such as a hole injection layer between the first electrode 11 and the first light-emitting layer 131; or an electron transport layer between the charge generation layer 133 and the first light-emitting layer 131. Similarly, the film layer between the charge generation layer 133 and the second electrode 12 may include a second light-emitting layer 132 and other functional layers, such as a hole transport layer between the second light-emitting layer 132 and the charge generation layer 133; or an electron transport layer and an electron injection layer between the second light-emitting layer 132 and the second electrode 12.

[0092] For example, the hole injection layer, hole transport layer, electron transport layer, electron injection layer, charge generation layer 133, and second electrode 12 are all shared film layers of multiple sub-pixels 10, and can be called common layers. For example, the aforementioned common layer and second electrode 12 can be full-surface film layers formed using an open mask. For example, the first light-emitting layer and the second light-emitting layer can be film layers formed using a fine metal mask (FMM), and a gap can be set between the light-emitting layers of different sub-pixels.

[0093] For example, as shown in Figure 2, the charge generation layer 133 has strong conductivity, which enables the light-emitting functional layer 13 to have advantages such as long lifetime, low power consumption, and high brightness. For example, the charge generation layer 133 may include an N-type charge generation layer and a P-type charge generation layer. For example, the material of the charge generation layer 133 may be a material containing phosphorothoxy groups or a triazine material. For example, the ratio of the electron mobility of the material of the charge generation layer 133 to the electron mobility of the electron transport layer material is 10. -2 ~10 2 .

[0094] For example, the organic light-emitting element shown in Figure 2 can be a tandem device, in which two light-emitting layers of a sub-pixel are stacked and connected in series, and a full-layer charge generation layer 133, such as a P-type doped charge generation layer P-CGL and an N-type doped charge generation layer N-CGL, is disposed between the stacked light-emitting layers. Compared to a display substrate without a tandem device, the tandem device uses N / P-CGL as a heterojunction to connect the two light-emitting layers in series. This technology realizes the series connection of two light-emitting devices, which greatly reduces the light-emitting current of the light-emitting devices under the same luminous intensity, improves the lifetime of the organic light-emitting element, and reduces power consumption. However, because the charge generation layer 133 has strong conductivity, it is easy for a strong leakage current to be generated between the lit sub-pixel and the adjacent sub-pixel that should not be lit, resulting in the problem of pixel "stealing" light. Of course, the embodiments of this disclosure are not limited to this; the organic light-emitting element may include only one light-emitting layer, such as a single device.

[0095] For example, as shown in Figure 2, the first electrode 11 can be an anode and the second electrode 12 can be a cathode.

[0096] For example, as shown in Figures 1 and 2, a pixel defining pattern 02 is provided on the side of the first electrode 11 away from the substrate 01. The pixel defining pattern 02 includes a pixel opening for defining the light-emitting area 100 of the sub-pixel 10. When the light-emitting functional layer 13 is formed in the pixel opening of the pixel defining pattern 02, the first electrode 11 and the second electrode 12 located on both sides of the light-emitting functional layer 13 can drive the light-emitting functional layer 13 in the pixel opening to emit light. The light-emitting area 100 can refer to the effective light-emitting area of ​​the sub-pixel, and the shape of the light-emitting area 100 refers to a two-dimensional shape. For example, the shape of the light-emitting area 100 can be the same as the shape of the pixel opening of the pixel defining pattern 01. The light-emitting area 100 can refer to the area defined by the edge of the pixel defining portion surrounding the pixel opening in the pixel defining pattern that contacts the first electrode 11. This area can be called the PDL opening.

[0097] For example, as shown in Figures 1 and 2, a sub-pixel 10 corresponds to at least one pixel opening, and at least a portion of the light-emitting functional layer 13 of the sub-pixel 10 is located in the pixel opening corresponding to the sub-pixel 10.

[0098] For example, as shown in Figure 2, the material of the pixel defining portion in the pixel defining pattern 02 may include polyimide, acrylic, or polyethylene terephthalate, etc.

[0099] For example, as shown in Figure 2, the portions of each film layer in the light-emitting functional layer 13 located in the pixel opening are continuously arranged, and the portions of the second electrode 12 located in the pixel opening are also continuously arranged.

[0100] For example, as shown in Figure 2, there are other film layers (not shown in the figure) between the first electrode 11 and the substrate 01. The other film layers may include pixel circuits, signal lines, insulating layers, etc. The first electrode 11 is electrically connected to the pixel circuit.

[0101] As shown in Figures 1 and 2, the defining structure 20 is located at least between the light-emitting regions 100 of adjacent sub-pixels of different colors, and the thickness of the portion of at least a portion of the film layer in the light-emitting functional layer 13 located at at least a portion of the position of the defining structure 20 is less than the thickness of the portion located within the light-emitting region 100 of the sub-pixel 10. For example, the thickness of the portion of at least a portion of the film layer in the light-emitting functional layer 13 located at at least a portion of the position of the defining structure 20 can be 0, that is, at least a portion of the film layer in the light-emitting functional layer 13 is isolated.

[0102] The limiting structure 20 can be used to reduce the thickness of at least a portion of the film in the light-emitting functional layer 13, or even to isolate at least a portion of the film in the light-emitting functional layer 13, so as to extend the leakage migration path of charge carriers and thereby reduce crosstalk between adjacent sub-pixels.

[0103] For example, as shown in FIG2, the defining structure 20 may be located on the side of the pixel defining portion away from the substrate 01. For example, the defining structure 20 may include a groove, wherein the thickness of at least a portion of the film layer in the light-emitting functional layer 13 located on the sidewall of the groove is less than the thickness of the portion located within the light-emitting region 100. For example, the thickness of at least one common layer in the light-emitting functional layer 13 located on the sidewall of the groove is less than the thickness of the portion located within the light-emitting region 100. For example, the thickness of the portion of the charge-generating layer 133 located on the sidewall of the groove is less than the thickness of the portion located within the light-emitting region 100.

[0104] The "thickness" in "thickness of the portion of at least a portion of the film layer in the light-emitting functional layer located at at least a portion of the defined structure" can refer to the average thickness, maximum thickness, or thickness at any location of the film layer at the aforementioned at least a portion of the location. Similarly, the "thickness" in "thickness of the portion of the film layer in the light-emitting functional layer located within the light-emitting region of the sub-pixel" can refer to the average thickness, maximum thickness, or thickness at any location of the film layer within the light-emitting region.

[0105] For example, the thickness of the portion of the second electrode 12 located at at least a portion of the defining structure is less than the thickness of the portion located within the light-emitting region 100 of the sub-pixel. For example, the thickness of the portion of the second electrode 12 located at at least a portion of the defining structure is 0, that is, the second electrode 12 is isolated by the defining structure.

[0106] For example, Figure 2 schematically shows that the light-emitting layers of two adjacent sub-pixels overlap within the groove included in the defining structure, but is not limited thereto. Depending on the setting of the distance between the defining structure and the light-emitting areas of different sub-pixels, the light-emitting layers of two adjacent sub-pixels may overlap at a position outside the groove of the defining structure.

[0107] Figure 2 schematically illustrates a recess located on the side of the pixel defining portion away from the substrate 01, but is not limited thereto. For example, in other examples, the defining structure may also include a portion of the pixel defining portion, such as a defining layer provided on the side of the pixel defining portion away from the substrate 01, the defining structure including an opening through the defining layer and a recess in the pixel defining portion. For example, in other examples, the defining structure may also be a protrusion located on the side of the pixel defining portion away from the substrate 01. For example, the cross-section of the protrusion cut by a plane perpendicular to the substrate includes two sides parallel to the substrate, wherein the length of the side away from the substrate is greater than the length of the side closer to the substrate, such as forming a generally inverted trapezoidal shape; wherein the length of the side away from the substrate is less than the length of the side closer to the substrate, such as forming a generally regular trapezoidal shape. For example, in other examples, the defining structure may be a recess in the pixel defining portion. For example, in other examples, the defining structure may include a recess in a planarization layer (PLN) between the first electrode and the substrate.

[0108] For example, as shown in Figure 2, the defining structure 20 can be made of a black material to shield certain structures in the pixel circuit, such as thin-film transistors containing oxides. For instance, the material of the defining structure 20 can include acrylic or polyacrylic acid, and can be made black by adding black pigments or dyes.

[0109] As shown in Figure 1, the plurality of sub-pixels 10 include at least two types of color sub-pixels arranged and adjacent to each other along a first direction. The light-emitting area 100 of one of the two types of color sub-pixels includes a first area 101 and a second area 102 arranged along a second direction. The orthographic projection of the first area 101 on the projection line extending along the second direction does not overlap with the orthographic projection of the light-emitting area 100 of the other color sub-pixels on the projection line. The first direction intersects with the second direction.

[0110] For example, as shown in Figure 1, the first direction can be the X direction, as indicated by the arrow pointing to the X direction, or the opposite direction. The second direction can be the Y direction, as indicated by the arrow pointing to the Y direction, or the opposite direction. For example, one of the first and second directions can be a row direction, and the other a column direction. For example, the angle between the first and second directions can be 80 to 100 degrees, such as when the first and second directions are perpendicular. The first and second directions can be interchanged.

[0111] For example, as shown in Figure 1, the first region 101 and the second region 102 can be two parts of the light-emitting region 100 in the same sub-pixel 10. For instance, the first region 101 and the second region 102 can be an integrated region, with the first electrode 11 corresponding to the first region 101 and the second region 102 in the same sub-pixel 10 being an integrated electrode, and the light-emitting layer being an integrated film layer. Alternatively, the first electrode 11 corresponding to the first region 101 and the second region 102 in the same sub-pixel 10 can be a non-integrated electrode, such as electrodes spaced apart, and the light-emitting layer being an integrated film layer. Or, the first electrode 11 corresponding to the first region 101 and the second region 102 in the same sub-pixel 10 can be a non-integrated electrode, such as electrodes spaced apart, and the light-emitting layer being a non-integrated film layer, such as a film layer spaced apart. For example, the first region 101 and the second region 102 can be two spaced-apart sub-regions included in the light-emitting region 100 of the same sub-pixel 10. The first electrode 11 corresponding to these two sub-regions can be electrically connected to the same pixel circuit or to different pixel circuits.

[0112] The dashed line in Figure 1 shows the boundary line between the first region 101 and the second region 102. This boundary line can be an extension of the boundary of the light-emitting area 100 of the sub-pixels of the two colors, excluding the first region 101. For example, the orthographic projection of the second region 102 on the projection line overlaps with the orthographic projection of the light-emitting area 100 of the other of the two colors on the projection line, and the orthographic projection of the first region 101 on the projection line overlaps only with the orthographic projections of the light-emitting areas 100 of other sub-pixels of the same color as its sub-pixel. For example, the first region 101 can be the portion of the light-emitting area 100 of one of the two colors that extends beyond the boundary of the light-emitting area 100 of the other of the two colors in the second direction.

[0113] For example, the above-mentioned "projected straight line" is a virtual straight line, and the light-emitting area 100 of each sub-pixel can be a region in the plane where the pixel limiting part and the contact surface of the first electrode 11 are located. The above-mentioned virtual straight line can be located in the same plane as the light-emitting area 100 of each sub-pixel, or it can be located in other planes.

[0114] For example, as shown in Figure 1, in the planar view, the straight line extending along the first direction and passing through the first region 101 does not pass through the light-emitting region 100 of other color sub-pixels.

[0115] As shown in Figure 1, the defining structure 20 includes a first defining structure 210 located between the light-emitting areas 100 of the two color sub-pixels. There are multiple first defining structures 210. At least one first defining structure 210 includes a main body portion 211 and a first inclined portion 212 connected to each other. The orthographic projection of the first inclined portion 212 on the projection line overlaps with the orthographic projection of the first area 101 on the projection line. The first inclined portion 212 bends relative to the main body portion 211 in a direction away from the sub-pixel where the first area 101 is located, and at least a portion of the extension direction of the first inclined portion 212 intersects both the first direction and the second direction. For example, some first defining structures 210 include a main body portion 211 and a first inclined portion 212. For example, each first defining structure 210 includes a main body portion 211 and a first inclined portion 212.

[0116] In the display substrate provided in this disclosure, while a first limiting structure 210 is provided between two color sub-pixels, the bending direction and extension direction of the first inclined portion 212 are set according to the positional relationship between the light-emitting area 100 of the two color sub-pixels and the first limiting structure 210. This prevents lateral leakage and helps to alleviate the problem of pixel stealing in the display substrate. At the same time, it makes the second electrode 12 of the sub-pixel have a large area of ​​conductive channel, avoids affecting the conductivity of the second electrode 12 of the sub-pixel, and makes the potential on the second electrode 12 of different sub-pixels maintain a high uniformity, thereby improving the display effect of the display substrate.

[0117] By setting the shape of the first limiting structure 210, the line connecting any position of the light emission area 100 boundary of the two color sub-pixels can pass through the first limiting structure 210, thus avoiding crosstalk between the two color sub-pixels.

[0118] For example, as shown in Figure 1, the light-emitting area 100 of the sub-pixel excluding the first area 101 in the above two color sub-pixels 10 includes four corners. The two first limiting structures 210 located on both sides of the sub-pixel 10 in the first direction include four first inclined portions 212. The four first inclined portions 212 are inclined toward the four corners respectively to achieve the effect of surrounding the four corners.

[0119] For example, as shown in FIG1, the main body portion 211 and the first inclined portion 212 are integrally formed. For example, the first inclined portion 212 may be provided on at least one side of the main body portion 211. For example, the boundary line between the main body portion 211 and the first inclined portion 212 may be the boundary line between the first region 101 and the second region 102, or the boundary line between the main body portion 211 and the first inclined portion 212 may be the boundary line between the portion of the main body portion 211 extending in the second direction and the portion of the first inclined portion 212 extending in the oblique direction.

[0120] For example, as shown in FIG1, in the orthographic projection on the XY plane, the straight line passing through the main body 211 passes through the second region 102 and the light-emitting region 100 of the other sub-pixel of the two colors. For example, in the orthographic projection on the XY plane, the straight line passing through the main body 211 passes through the first region 101 and does not pass through the light-emitting region 100 of the other sub-pixel of the two colors.

[0121] For example, as shown in Figure 1, with the direction pointed to by the arrow in the Y direction as upward, the first region 101 protrudes in the Y direction relative to the light-emitting region 100 of the other color sub-pixel of the two types of color sub-pixels. The first inclined portion 212 is inclined to the upper side of the light-emitting region 100 of the other color sub-pixel to increase the distance between the first inclined portion 212 and the limiting structure 20 located on the upper side of the first region 101, thereby increasing the conduction area of ​​the second electrode 12 on the upper side of the first region 101 and reducing power consumption.

[0122] In some examples, as shown in Figure 1, the edge of the first inclined portion 212 protrudes relative to the edge of the first region 101 away from the edge of the second region 102.

[0123] By setting the edge of the first inclined portion 212 to protrude relative to the edge of the first region 101, it is beneficial to extend the leakage migration path of charge carriers in the two different color sub-pixels, thereby reducing crosstalk between adjacent sub-pixels.

[0124] In some examples, as shown in Figure 1, multiple sub-pixels 10 are divided into multiple pixel units 300. Each pixel unit 300 includes a first color sub-pixel 110, a second color sub-pixel 120, and a third color sub-pixel 130. The first color sub-pixel 110 and the second color sub-pixel 120 are arranged along a second direction, and the first color sub-pixel 110 and the third color sub-pixel 130 are arranged along a first direction.

[0125] For example, as shown in Figure 1, one of the first color sub-pixel 110 and the second color sub-pixel 120 can be a red sub-pixel, and the other can be a green sub-pixel; the third color sub-pixel 130 is a blue sub-pixel. For example, the first color sub-pixel 110 can be a red sub-pixel, and the second color sub-pixel 120 can be a green sub-pixel.

[0126] In some examples, as shown in FIG1, the two color sub-pixels 10 include sub-pixels 10 located in the same pixel unit 300, and / or include sub-pixels 10 located in two pixel units 300 respectively arranged adjacently in a first direction; the two color sub-pixels 10 include one of a first color sub-pixel 110 and a second color sub-pixel 120 and a third color sub-pixel 130, and at least one of the first color sub-pixel 110 and the second color sub-pixel 120 includes a first region 101.

[0127] For example, as shown in Figure 1, the first defining structure 210 can be located between the first color sub-pixel 110 and the third color sub-pixel 130 in the same pixel unit 300; the first defining structure 210 can be located between the second color sub-pixel 120 and the third color sub-pixel 130 in the same pixel unit 300; the first defining structure 210 can be located between the first color sub-pixel 110 and the third color sub-pixel 130 belonging to adjacent pixel units 300; the first defining structure 210 can be located between the second color sub-pixel 120 and the third color sub-pixel 130 belonging to adjacent pixel units 300. For example, both the first color sub-pixel 110 and the second color sub-pixel 120 include the aforementioned first region 101. For example, the direction from the center of the first region 101 in the first color sub-pixel 110 to the center of the second region 102 is opposite to the direction from the center of the first region 101 in the second color sub-pixel 120 to the center of the second region 102.

[0128] In some examples, as shown in FIG1, in the first limiting structure 210, the first inclined portion 212 bends toward the side of the center line C0 extending in the second direction of the light-emitting area 100 of the third color sub-pixel 130 relative to at least a portion of the main body portion 211, and the extending direction of at least a portion of the first inclined portion 212 intersects with the extending direction of each side of the light-emitting area 100 of the third color sub-pixel 130.

[0129] By providing a first limiting structure 210 including the aforementioned first inclined portion 212 between at least one of the first color sub-pixel 110 and the second color sub-pixel 120 and the third color sub-pixel 130, the crosstalk between the third color sub-pixel 130 and other color sub-pixels can be reduced, while increasing the area of ​​the conduction channel of the second electrode 12 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120, thus avoiding affecting the conductivity of the second electrode 12 of the sub-pixel.

[0130] In some examples, as shown in Figure 1, multiple pixel units 300 are divided into multiple pixel groups 400. Each pixel group 400 includes pixel units 300 arranged along a second direction, such as a column (or row) of pixel units 300 arranged along the second direction. Each pixel group 400 includes a first sub-pixel group 410 and a second sub-pixel group 420. The first sub-pixel group 410 includes multiple first-color sub-pixels 110 and multiple second-color sub-pixels 120 arranged along the second direction. The second sub-pixel group 420 includes multiple third-color sub-pixels 130 arranged along the second direction.

[0131] For example, Figure 1 schematically shows that in each first sub-pixel group 410, the first color sub-pixel 110 and the second color sub-pixel 120 are arranged alternately, but it is not limited to this. In the same first sub-pixel group 410, the two adjacent sub-pixels 10 in two adjacent pixel units 300 can be the same color sub-pixel. For example, the two adjacent sub-pixels 10 in two adjacent pixel units 300 can be the first color sub-pixel 110 or the second color sub-pixel 120 to achieve a 2-in-1 mask design, which is beneficial to improve the aperture ratio of the sub-pixels.

[0132] In some examples, as shown in Figure 1, in the first defining structure 210 located between the adjacent first sub-pixel group 410 and the second sub-pixel group 420, there is a gap between two adjacent first defining structures 210.

[0133] By setting the limiting structure between the adjacent first sub-pixel group 410 and the second sub-pixel group 420 to include a first limiting structure 210 with multiple intervals, it is beneficial to increase the area of ​​the conduction channel of the second electrode 12 and reduce power consumption.

[0134] In some examples, as shown in FIG1, the limiting structure 20 further includes a second limiting structure 220 located between the light-emitting areas 100 of the adjacent first color sub-pixel 110 and second color sub-pixel 120. The second limiting structure 220 is spaced apart from the first limiting structure 210, and in the first direction, the size of the light-emitting areas 100 of the first color sub-pixel 110 and the second color sub-pixel 120 is not greater than the size of the second limiting structure 220.

[0135] By setting a second limiting structure 220 with a size larger than the light-emitting areas 100 of the first color sub-pixel 110 and the second color sub-pixel 120 between their light-emitting areas 100, and by spacing the second limiting structure 220 from the first limiting structure 210, it is beneficial to reduce crosstalk between the first color sub-pixel 110 and the second color sub-pixel 120 while increasing the area of ​​the conduction channel of the second electrode 12 in the first color sub-pixel 110 and the second color sub-pixel 120.

[0136] In some examples, as shown in FIG1, the first electrode 11 includes a main electrode 011 and a connecting electrode 012 connected to each other. Along a direction perpendicular to the substrate 01, the connecting electrode 012 does not overlap with the light-emitting area 100 of the sub-pixel 10.

[0137] For example, as shown in Figure 1, the main electrode 011 and the connecting electrode 012 are integrally formed in the same first electrode 11. For example, the shape of the main electrode 011 is substantially the same as the shape of the light-emitting area 100. For example, the connecting electrode 012 is configured to be electrically connected to the pixel circuit.

[0138] For example, as shown in Figure 1, the first electrode 11 of the first color sub-pixel 110 and the second color sub-pixel 120 includes only the main electrode 011 and the connecting electrode 012. The first electrode 11 of the third color sub-pixel 130, in addition to the main electrode 011 and the connecting electrode 012, also includes a protruding electrode 013. The protruding electrode 013 can block part of the pixel circuit structure between itself and the substrate 01, such as blocking part of the thin-film transistor structure. For example, in the direction perpendicular to the substrate 01, the first defining structure 210 overlaps with both the connecting electrode 012 and the protruding electrode 013, but the first defining structure 210 does not overlap with the main electrode 011.

[0139] In some examples, as shown in FIG1, there are multiple second defining structures 220, and at least some of the second defining structures 220 include a bend 2201 to avoid the connection electrode 012 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120.

[0140] By providing a bend 2201 in part of the second limiting structure 220, the overlap area between the second limiting structure 220 and the connecting electrode 012 can be reduced, so as to avoid the second limiting structure 220 affecting the first electrode 11.

[0141] For example, as shown in FIG1, the bending portion 2201 bends toward the side away from the connection electrode 012 of the first color sub-pixel 110, so as to avoid the connection electrode 012 of the first color sub-pixel 110 as much as possible.

[0142] In some examples, as shown in Figure 1, the limiting structure 20 between the third color sub-pixel 130 and other adjacent color sub-pixels includes only a first limiting structure 210, and the limiting structure 20 between the adjacent first color sub-pixel 110 and the second color sub-pixel 120 includes only a second limiting structure 220.

[0143] By setting only one limiting structure between the third color sub-pixel 130 and the adjacent second color sub-pixel 120 and first color sub-pixel 110, and by setting only one limiting structure between the adjacent first color sub-pixel 110 and second color sub-pixel 120, it is beneficial to reduce crosstalk between adjacent different color sub-pixels while maximizing the conduction channel of the second electrode 12 located between different color sub-pixels.

[0144] In some examples, as shown in Figure 1, the second defining structure 220 located between the first color sub-pixel 110 and the second color sub-pixel 120 in the same pixel group 400 is a first type defining structure 221, and the second defining structure 220 belonging to the first color sub-pixel 110 and the second color sub-pixel 120 in adjacent pixel groups 400 is a second type defining structure 222. At least one of the first type defining structure 221 and the second type defining structure 222 includes a bending portion 2201, and the shape of the second type defining structure 222 is different from the shape of the first type defining structure 221.

[0145] The shape of the second limiting structure 220 is set for the position of the connecting electrode 012 in the first color sub-pixel 110 and the second color sub-pixel 120. This helps to reduce the influence of the second limiting structure 220 on the connecting electrode 012, while adjusting the shape of the conduction channel of the second electrode 12 to improve the conduction effect of the second electrode 12.

[0146] For example, as shown in Figure 1, two connection electrodes 012 for sub-pixels 10 are disposed between the first color sub-pixel 110 and the second color sub-pixel 120 in the same pixel group 400. The first type defining structure 221 between these two sub-pixels 10 includes a bending portion 2201, and the second type defining structure 222 is a straight structure. However, it is not limited to this. If the connection electrode 012 of one of the first color sub-pixels 110 and the second color sub-pixel 120 in the same pixel group is located between the two, and the connection electrode 012 of the other is facing the second type defining structure 222, then both the first type defining structure 221 and the second type defining structure 222 include bending portions 2201. If the connection electrodes 012 for these two sub-pixels are disposed between the first color sub-pixels 110 and the second color sub-pixels 120 in adjacent pixel groups, the second type defining structure 222 between these two sub-pixels is provided with a bending portion 2201.

[0147] In some examples, as shown in FIG1, at least one of the opposite ends of the second defining structure 220 in the first direction protrudes relative to the edge of the first electrode 11 of the first color sub-pixel 110 and the second color sub-pixel 120, and the main body 211 includes a recess 2111 disposed opposite to the protruding end of the second defining structure 220, and the orthographic projection of the first defining structure 210 on the projection line does not overlap with the orthographic projection of the second type defining structure 222 on the projection line.

[0148] By setting the relative positional relationship between the second limiting structure 220 and the first electrode 11 of the first color sub-pixel 110 and the second color sub-pixel 120, as well as the relative positional relationship between the second limiting structure 220 and the first limiting structure 210, crosstalk between different color sub-pixels can be reduced while ensuring that the second electrode 12 between the first limiting structure 210 and the second limiting structure 220 has a larger conduction channel area without increasing the power consumption of the second electrode 12.

[0149] For example, as shown in FIG1, both ends of the second defining structure 220 protrude relative to the edges of the first electrodes 11 of the first color sub-pixel 110 and the second color sub-pixel 120 in the first direction. For example, the recessed portion 2111 is disposed opposite to the end of the first type defining structure 221.

[0150] For example, as shown in FIG1, each of the first limiting structures 210 has a first inclined portion 212 at both ends of the main body portion 211. For example, the distance between the first inclined portions 212 of two adjacent first limiting structures 210 in the second direction is greater than the dimension of the second type limiting structure 222 in the second direction.

[0151] In some examples, as shown in Figure 1, two first defining structures 210 located on either side of the same third color sub-pixel 130 are symmetrically distributed with respect to the center line C0 of the light-emitting area 100 in the third color sub-pixel 130 extending in the second direction.

[0152] By setting the two first limiting structures 210 on both sides of the same third color sub-pixel 130 to be symmetrically distributed, it is beneficial to make the width of the conduction channel of the second electrode 12 on both sides of the third color sub-pixel 130 more balanced.

[0153] In some examples, as shown in FIG1, the main body portion 211, except for the recessed portion 2111, consists of straight portions 2112 extending along the second direction. The first inclined portion 212 includes an inclined segment 2121 and a straight segment 2122. The inclined segment 2121 is located between the straight segment 2122 and the main body portion 211. The extension direction of the inclined segment 2121 intersects both the first and second directions. The straight segment 2122 extends along the second direction. The second limiting structure 220, except for the bent portion 2201, extends along the first direction.

[0154] By setting the first inclined portion 212 to include an inclined segment 2121 and a straight segment 2122, it is advantageous to make the conduction channel of the second electrode 12 on the upper side of the third color sub-pixel 130 have a larger width.

[0155] Of course, the embodiments disclosed herein are not limited thereto, and the first inclined portion 212 may only include the inclined segment 2121.

[0156] For example, as shown in FIG1, the recessed portion 2111 in the main body portion 211 includes a portion extending in a second direction. For example, the length of the portion extending in the second direction in the recessed portion 2111 is less than the length of the straight portion 2112. For example, two straight portions 2112 are provided on both sides of the recessed portion 2111.

[0157] For example, as shown in Figure 1, the straight portion 2112 and the recessed portion 2111 are integrally formed. For example, the inclined segment 2121 and the straight segment 2122 are integrally formed. For example, the length of the straight segment 2122 is less than the dimension of the inclined segment 2121 in the second direction.

[0158] For example, as shown in FIG1, the display substrate further includes a spacer 600 located on the side of the first electrode 11 away from the substrate 01. For example, the spacer 600 is located on the side of the pixel defining portion away from the substrate 01. For example, the spacer 600 may be located between two adjacent third color sub-pixels 130. For example, the spacer 600 is configured to support a fine metal mask (FMM) for forming the light-emitting layer.

[0159] Figure 3 is a schematic diagram of a pixel unit and its defined structure in the display substrate shown in Figure 1.

[0160] In some examples, as shown in FIG3, the edge of the first inclined portion 212 away from at least one of the first color sub-pixel 110 and the second color sub-pixel 120 is the first edge 2130, and the edge of the light-emitting area 100 of the third color sub-pixel 130 close to the first color sub-pixel 110 and the second color sub-pixel 120 is the second edge 131. The second edge 131 extends along a second direction, and the distance d between the straight line passing through the first edge 2130 and extending along the second direction and the second edge 131 is not greater than 5 micrometers. For example, the second edge 131 can be located on the side of the straight line passing through the first edge 2130 away from the first color sub-pixel 110, or it can be located between the aforementioned straight line and the first color sub-pixel 110. For example, the value of d can be 0, 1, 2, 3, 4, or 5. The specific values ​​of d in this embodiment are not listed one by one, and can be any value between 0 and 5.

[0161] For example, as shown in Figure 3, in the plan view, the straight line extending along the second direction passes through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, which is beneficial to increase the size of the conductive channel of the second electrode 12 at the upper left and upper right corners of the second color sub-pixel 120.

[0162] In some examples, as shown in Figure 3, the edge of the first inclined portion 212 protrudes relative to the edge of the first region 101 that is away from the second region 102, and the distance e between two straight lines extending along the first direction passing through these two edges is not less than 4 micrometers and not greater than half the distance between the light-emitting areas 100 of two adjacent sub-pixels. For example, when the straight line extending along the second direction passes through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, the value of e can be 4 to 6; when the straight line extending along the second direction does not pass through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, the value of e is greater than 6.

[0163] By setting the values ​​of d and e as described above, the carrier leakage path between the first color sub-pixel 110 and the third color sub-pixel 130 can be extended to 36-42 micrometers, thereby lengthening the lateral leakage path between the first color sub-pixel 110 and the third color sub-pixel 130 and reducing the leakage current. Similarly, the first inclined portion 212 between the second color sub-pixel 120 and the third color sub-pixel 130 also satisfies the above-mentioned dimensional relationship setting, which can lengthen the lateral leakage path between the second color sub-pixel 120 and the third color sub-pixel 130 and reduce the leakage current.

[0164] In some examples, as shown in Figure 3, the distance b between the first type defining structure 221 and the recess 2111 is 4 to 7 micrometers. For example, the value of b can be 4, 5, 6, or 7. This embodiment of the present disclosure will not list the specific values ​​of b one by one, and it can be any value between 4 and 7.

[0165] In some examples, as shown in FIG3, the dimension 'a' of the end of the second defining structure 220 extending beyond the edge of the light-emitting area 100 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120 is 5 to 7 micrometers. For example, the value of 'a' can be 5, 6, or 7. This embodiment of the present disclosure will not list the specific values ​​of 'a' one by one, but it can be any value between 5 and 7.

[0166] By setting the values ​​of a and b, a channel with a width of 5 to 7 micrometers is formed between the first color sub-pixel 110 and the second color sub-pixel 120 and the first limiting structure 210, and a channel with a width of 4 to 7 micrometers is formed between the second limiting structure 220 and the first limiting structure 210. This prevents lateral leakage while providing sufficient connectivity path width for the second electrode 12. Furthermore, the channel path value of leakage current between the first color sub-pixel 110 and the second color sub-pixel 120 can be extended to 24 to 28 micrometers, thereby extending the lateral leakage path and reducing the leakage current.

[0167] In some examples, as shown in Figure 3, the distance c between the recess 2111 and the light-emitting area 100 of the third color sub-pixel 130 is 3 to 5 micrometers. For example, the value of c can be 3, 4, or 5. This embodiment of the present disclosure will not list the specific values ​​of c one by one, and it can be any value between 3 and 5.

[0168] To satisfy the numerical range of a and b mentioned above, the value of c can be set to 3 to 5 micrometers.

[0169] In some examples, as shown in FIG3, the distance x between the portion of the main body 211 excluding the recessed portion 2111 and the light-emitting area 100 of the third color sub-pixel 130 is 6 to 10 micrometers, the distance x between the portion of the main body 211 excluding the recessed portion 2111 and the light-emitting area 100 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120 is 6 to 10 micrometers, and the width y of the first defining structure 210 in the first direction is 3 to 5 micrometers.

[0170] For example, the value of x can be 6, 7, 8, 9, or 10. This embodiment of the disclosure will not list all the specific values ​​of x, but it can be any value between 6 and 10. For example, the value of y can be 3, 4, or 5. This embodiment of the disclosure will not list all the specific values ​​of y, but it can be any value between 3 and 5.

[0171] Figure 4 is a partial planar structural schematic diagram of a display substrate provided according to another example of an embodiment of the present disclosure. The display substrate shown in Figure 4 differs from the display substrate shown in Figure 1 in that the shape defining the structure is different.

[0172] In some examples, as shown in FIG4, at least a portion of the plurality of first defining structures 210 includes at least one first curved portion 2113 in the portion of the main body 211 other than the recessed portion 2111, and at least a portion of the plurality of second defining structures 220 includes at least one second curved portion 2202.

[0173] By providing a first curved portion 2113 in the first defining structure 210 and a second curved portion 2202 in the second defining structure 220, the length of the edge of the defining structure is increased, thereby increasing the area of ​​the sidewalls of the defining structure. This requires the charge-generating layer at the location of the defining structure to be distributed over a larger area of ​​the sidewalls, increasing the effective isolation area of ​​the defining structure. Consequently, the charge-generating layer can be thinned or broken more effectively by the sidewalls of the defining structure, increasing the lateral resistance of the charge-generating layer, preventing lateral leakage, and avoiding signal crosstalk between adjacent sub-pixels, thus improving display quality.

[0174] For example, as shown in FIG1, each main body portion 211 includes a plurality of first curved portions 2113, and the first curved portions 2113 located on the same side as the recessed portion 2111 form a wavy shape. For example, each second defining structure 220 includes a plurality of second curved portions 2202, and the second curved portions 2202 located on the same side as the bent portion 2201 form a wavy shape. For example, both the first type defining structure 221 and the second type defining structure 222 include a plurality of second curved portions 2202.

[0175] In some examples, as shown in FIG4, the distances between the light-emitting area 100 of the third color sub-pixel 130 and the recess 2111 and at least one first curved portion 2113 are a first distance d1 and a second distance d2, respectively, wherein the first distance d2 is less than the second distance d2.

[0176] By setting the relationship between the first distance and the second distance, the distance between the first curved portion 2113 of the first limiting structure 210 and the light-emitting area 100 of the third color sub-pixel 130 and the first color sub-pixel 110 (or the second color sub-pixel 120) located on both sides of it can be adjusted to avoid affecting the conductivity of the second electrode 12.

[0177] In some examples, as shown in FIG4, in the second direction, the size of the recess 2111 is larger than the size of at least the first bend 2113.

[0178] By setting the size of the first curved portion 2113 to be smaller than the size of the recessed portion 2111, it is beneficial to increase the number of the first curved portions 2113 and improve the partitioning effect of the first limiting structure 210.

[0179] For example, as shown in FIG4, the first inclined portion 212 may not include the first curved portion 2113. However, it is not limited to this; in other examples, the first inclined portion 212 may also include the first curved portion 2113.

[0180] The structures and sub-pixels in the display substrate shown in Figure 4, except for the defined structure which has a curved portion, can have the same features as the corresponding structures in the display substrate shown in Figure 1, and will not be described again here.

[0181] Figures 5 and 6 are partial planar structural schematic diagrams of display substrates provided according to different examples of embodiments of the present disclosure. Figure 7 is a partial cross-sectional structural schematic diagram taken along line BB' shown in Figure 5.

[0182] The display substrate shown in Figure 5 differs from the display substrate shown in Figure 1 in that it also includes at least one auxiliary electrode line 500. The display substrate shown in Figure 6 differs from the display substrate shown in Figure 4 in that it also includes at least one auxiliary electrode line 500.

[0183] In some examples, as shown in Figures 5 to 7, the display substrate further includes at least one auxiliary electrode line 500, which is disposed in the same layer as the first electrode 11 and spaced apart. At least a portion of each of the at least one auxiliary electrode lines 500 extends along a first direction. Each auxiliary electrode line 500 includes at least one contact pad 510. The at least one contact pad 510 is electrically connected to the second electrode 12 through vias 511 and 512 in a film layer between it and the second electrode 12. The film layer includes at least one of the light-emitting functional layers 13.

[0184] By providing an auxiliary electrode line 500 electrically connected to the second electrode 12 on the same layer as the first electrode 11, it is beneficial to reduce lateral leakage between adjacent and different color sub-pixels to reduce crosstalk, while reducing the resistance of the second electrode 12 to improve the problem of increased resistance of the second electrode 12 caused by the setting of the limited structure, and to minimize the increase in power consumption of the display substrate.

[0185] For example, the contact pad and the first electrode can be made of the same material and formed in the same process step.

[0186] For example, as shown in Figures 5 to 7, an auxiliary electrode line 500 is provided between any two adjacent pixel units 300 arranged along the second direction. For example, each auxiliary electrode line 500 may include multiple contact pads 510. For example, the ratio of the number of pixel units 300 arranged along the first direction to the number of contact pads 510 provided on the same auxiliary electrode line 500 is not less than 2. For example, the film layer between the contact pads 510 and the second electrode 12 may include a pixel defining portion, a defining structure, and a light-emitting functional layer 13, etc. Via 511 is a via in the pixel defining portion, and via 512 is a via formed by drilling the light-emitting functional layer 13 with a laser. In at least the direction along the BB' line, the size of via 512 is smaller than the size of via 511. For example, in any direction, the size of via 512 is smaller than the size of via 511.

[0187] In some examples, as shown in Figures 5 and 6, in the second direction, the distance between the first electrodes 11 of adjacent third color sub-pixels 130 is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120; each of the at least one contact pad 510 is located between the first electrodes 11 of adjacent third color sub-pixels 130 in the second direction, and in the second direction, the size of the contact pad 510 is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120. For example, in the second direction, the size of the via is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120.

[0188] After forming the light-emitting functional layer 13, it is easy to implement the process of forming vias exposing contact pads 510 in the light-emitting functional layer 13 and the pixel electrode by laser drilling. The size of the via formed by laser drilling is relatively large. For example, if the size of the via and the contact pad 510 is larger than the distance between the first electrodes 11 of the adjacent first color sub-pixels 110 and second color sub-pixels 120, by placing the via and the contact pad 510 between the first electrodes 11 of the adjacent third color sub-pixels 130, interference between the contact pad 510 and the first electrode 11 can be avoided.

[0189] In some examples, as shown in Figures 5 and 6, the display substrate further includes a spacer 600 located on the side of the first electrode 11 away from the substrate 01. For example, the spacer 600 may be located on the side of the pixel defining portion away from the substrate 01. The orthographic projection of the spacer 600 on the substrate 01 does not overlap with the orthographic projection of the at least one auxiliary electrode line 500 on the substrate 01. For example, the spacer 600 does not overlap with any of the auxiliary electrode lines 500.

[0190] By ensuring the spacer does not overlap with the auxiliary electrode lines, the flatness of the film layer between the spacer and the auxiliary electrode lines can be avoided, preventing irregularities in the spacer's shape, such as affecting its height and consequently its support for the fine metal photomask. Furthermore, since the auxiliary electrode lines are reflective, ensuring the spacer does not overlap with them prevents the auxiliary electrode lines from enhancing the exposure effect on the spacer during exposure, thus avoiding a reduction in the spacer's height and affecting its support.

[0191] In some examples, as shown in Figures 5 and 6, spacers 600 are located between the first electrodes 11 of third color sub-pixels 130 that are adjacently disposed in the second direction, and there are multiple spacers 600 and multiple contact pads 510, with the multiple spacers 600 and the multiple contact pads 510 alternating in at least one of the first and second directions.

[0192] For example, as shown in Figures 5 and 6, the auxiliary electrode line 500 passes around the spacer 600. For example, the portion of the auxiliary electrode line 500 that passes around the spacer 600 and the portion that passes over the contact pad 510 extends along the first direction.

[0193] For example, as shown in Figures 5 and 6, spacers 600 are disposed between the first electrodes 11 of adjacent third color sub-pixels 130 along the second direction. For example, spacers 600 or contact pads 510 are disposed between the first electrodes 11 of adjacent third color sub-pixels 130 along the second direction. The ratio of the number of pixel units 300 arranged along the first direction to the number of spacers 600 arranged along the first direction is not less than 2. For example, the ratio of the number of spacers 600 arranged along the first direction to the number of contact pads 510 in the same auxiliary electrode line 500 is 0.9 to 1.1. For example, spacers 600 and contact pads 510 are arranged alternately along the first direction. For example, spacers 600 and contact pads 510 are arranged alternately along the second direction.

[0194] In some examples, as shown in Figures 5 and 6, the defining structure 20 does not overlap with at least one contact pad 510 along a direction perpendicular to the substrate 01. For example, the defining structure 20 does not overlap with any of the contact pads 510. For example, the defining structure 20 may be a groove in a pixel defining portion.

[0195] By setting the limiting structure to not overlap with the contact pad 510, the edge of the contact pad 510 can be avoided from being exposed, thus avoiding process defects such as silver precipitation on the contact pad 510.

[0196] For example, as shown in Figures 5 and 6, the defining structure may overlap with a portion of the auxiliary electrode line 500 other than the contact pad 510. For example, the portion of the auxiliary electrode line 500 that passes around the spacer 600 overlaps with the first defining structure 210. For example, the first inclined portion 212 overlaps with the portion of the auxiliary electrode line 500 that passes around the spacer 600.

[0197] For example, as shown in Figures 5 and 6, the edge of the first electrode 11 of the third color sub-pixel 130 that faces the contact pad 510 includes a zigzag edge to avoid the contact pad 510.

[0198] For example, as shown in Figures 5 and 6, the distance between the contact pad 510 and the orthographic projection of the defining structure on the substrate 01 is 3 to 6 micrometers.

[0199] In some examples, as shown in Figures 5 and 6, at least one of the plurality of first defining structures 210 further includes a second inclined portion 213 connected to the body portion 211, the second inclined portion 213 being bent relative to the body portion 211 toward the side away from the contact pad 510 to avoid the contact pad 510.

[0200] By providing a second inclined portion 213 in the first limiting structure 210, it is possible to reduce the lateral leakage current between the third color sub-pixel 130 and other color sub-pixels while avoiding the overlap between the first limiting structure 210 and the contact pad 510.

[0201] In some examples, as shown in Figures 5 and 6, the orthographic projection of the second tilted portion 213 onto the projection line does not overlap with the orthographic projection of the light-emitting area 100 of the third color sub-pixel 130 onto the projection line. For example, the orthographic projection of the second tilted portion 213 onto the projection line overlaps with the orthographic projection of the first area 101 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120 onto the projection line.

[0202] In some examples, as shown in Figures 5 and 6, the orthographic projection of the edge of the second inclined portion 213 onto the projection line lies entirely within the orthographic projection of the light-emitting area 100 of one of the first color sub-pixels 110 and the second color sub-pixels 120 onto the projection line. For example, the orthographic projection of the edge of the second inclined portion 213 onto the projection line lies entirely within the orthographic projection of the first area 101 onto the projection line.

[0203] By setting the relative positional relationship between the edges of the first inclined portion 212, the second inclined portion 213, and the first region 101, it is possible to reduce the lateral leakage between the third color sub-pixel 130 and other color sub-pixels, and also to prevent the first limiting structure 210 from overlapping with the contact pad 510.

[0204] For example, as shown in Figures 5 and 6, in the second direction, the size of the first inclined portion 212 is larger than the size of the second inclined portion 213. For example, the same first defining structure 210 may include two first inclined portions 212. For example, the same first defining structure 210 may include one first inclined portion 212 and one second inclined portion 213. For example, one of two first defining structures 210 located on either side of the same third color sub-pixel 130 includes a second inclined portion 213, while the other does not. For example, in the same first defining structure 210, the inclined directions of the first inclined portion 212 and the second inclined portion 213 are opposite.

[0205] In some examples, as shown in Figures 5 and 6, at least one auxiliary electrode line 500 overlaps with at least one of a plurality of second defining structures 220 along a direction perpendicular to the substrate 01.

[0206] The distance ratio between the second defining structure 220 located between the adjacent first color sub-pixel 110 and second color sub-pixel 120 and the light-emitting area 100 of the two sub-pixels is approximately equal, and the distance ratio between the auxiliary electrode line 500 located between the light-emitting areas 100 of the two sub-pixels and the light-emitting area 100 of the two sub-pixels is approximately equal. This helps to ensure that the second electrode 12 has a more balanced conductive channel width while avoiding interference between the auxiliary electrode line 500 and the first electrode 11 of the two sub-pixels.

[0207] For example, as shown in Figures 5 and 6, along the direction perpendicular to the substrate 01, the auxiliary electrode line 500 overlaps with the second type defining structure 222, but does not overlap with the first type defining structure 221.

[0208] For example, as shown in Figure 5, a wiring layer (not shown) may be provided between the auxiliary electrode line 500 and the substrate. This wiring layer has at least a plurality of traces extending along the Y direction. For example, the wiring layer may include grid traces. The auxiliary electrode line is electrically connected to the wiring layer through vias in the insulating layer between it and the wiring layer to reduce the power consumption of the second electrode. For example, in the direction perpendicular to the substrate, the vias overlap with the second type of defined structure.

[0209] Figures 8 and 9 are schematic partial planar structures of display substrates provided according to different examples of another embodiment of the present disclosure. The display substrates shown in Figures 8 and 9 differ in the shape of the defining structures. The display substrate shown in Figure 8 differs from the display substrate shown in Figure 1 in the number of defining structures disposed between adjacent sub-pixels, and the shapes of the first defining structure 210 and the second defining structure 220 are different in the two examples. The distribution of sub-pixels in the display substrates shown in Figures 8 and 9 is the same as that in the display substrate shown in Figure 1, and will not be described again here.

[0210] In some examples, as shown in Figures 8 and 9, the defining structure 20 further includes a plurality of third defining structures 230 and a plurality of fourth defining structures 240, each third defining structure 230 surrounding at least one corner of the first electrode 11 of the first color sub-pixel 110 and the second color sub-pixel 120, and each fourth defining structure 240 being located between the first defining structure 210 and at least one of the first color sub-pixel 110 and the second color sub-pixel 120.

[0211] By setting multiple limiting structures between the third color sub-pixel 130 and other color sub-pixels, the isolation effect can be improved, forcing the lateral leakage current to flow to the area without limiting structures, thereby extending the current flow path and reducing the impact of leakage current.

[0212] For example, as shown in Figures 8 and 9, at least one corner of the first electrode 11 of the first color sub-pixel 110 is surrounded by a third defining structure 230. For example, at least one corner of the first electrode 11 of the second color sub-pixel 120 is surrounded by a third defining structure 230. For example, a fourth defining structure 240 is provided between the same first defining structure 210 and one of the second color sub-pixel 120 and the first color sub-pixel 110. For example, a third defining structure 230 is provided between the same first defining structure 210 and one of the second color sub-pixel 120 and the first color sub-pixel 110, and a fourth defining structure 240 is provided between the same first defining structure 210 and the other of the second color sub-pixel 120 and the first color sub-pixel 110.

[0213] In some examples, as shown in Figures 8 and 9, each of the second defining structures 220 has opposite ends in the first direction that do not exceed the edges of the first electrode 11 on both sides of the first electrode 11 in the first direction, at least one of the first color sub-pixel 110 and the second color sub-pixel 120.

[0214] By setting the relative positional relationship between the two ends of the second limiting structure 220 and the edges of the first electrode 11 of the first color sub-pixel 110 and the second color sub-pixel 120, it is beneficial to increase the distance between the first limiting structure 210 and the second limiting structure 220, thereby increasing the area of ​​the conductive channel of the second electrode 12 and reducing the impact on the power consumption of the display substrate.

[0215] For example, as shown in Figures 8 and 9, each of the second defining structures 220 has opposite ends in the first direction that do not exceed the edges of the first electrodes 11 of the first color sub-pixel 110 and the second color sub-pixel 120 on both sides in the first direction.

[0216] In some examples, as shown in Figures 8 and 9, the two first electrodes 11 of the adjacent first color sub-pixel 110 and second color sub-pixel 120 include four corners adjacent to each other. The first corner 0131 and the second corner 0132 of the four corners are respectively surrounded by a third defining structure 230, and the first corner 0131 and the second corner 0132 are two corners of the first color sub-pixel 110 and the second color sub-pixel 120 that are opposite each other in the oblique direction. The oblique direction is the direction that intersects with the arrangement direction of the first color sub-pixel 110 and the second color sub-pixel 120.

[0217] By setting a third limiting structure 230 at the first corner 0131 and the second corner 0132 in the oblique direction, it is beneficial to further extend the leakage path from the third color sub-pixel 130 to the first corner 0131 and the second corner 0132, and reduce the crosstalk between the third color sub-pixel 130 and other color sub-pixels.

[0218] For example, as shown in Figures 8 and 9, the first color sub-pixel 110 includes a first corner portion 0131, and the second color sub-pixel 120 includes a second corner portion 0132. The phrase "the first corner portion 0131 and the second corner portion 0132 are each surrounded by a third defining structure 230" means that the third defining structure 230 encompasses the apex corners of the first corner portion 0131 and the second corner portion 0132, as well as the portions of the two sides constituting the apex corners. For example, one end of the third defining structure 230 extends to the connecting electrode 012 of the first electrode 11, and the other end of the third defining structure 230 extends beyond the edge of the light-emitting area 100 of the third color sub-pixel 130 extending along the first direction.

[0219] In some examples, as shown in Figures 8 and 9, a second defining structure 220 and two third defining structures 230 are provided between adjacent first color sub-pixels 110 and second color sub-pixels 120. One second defining structure 220 includes three parts arranged along a first direction. In a second direction, the first part 2203 of the three parts overlaps with one of the two third defining structures 230, the second part 2204 of the three parts does not overlap with either of the two third defining structures 230, and the third part 2205 of the three parts overlaps with the other of the two third defining structures 230.

[0220] By setting the relative positional relationship between the second limiting structure 220 and the third limiting structure 230, crosstalk between the first color sub-pixel 110 and the second color sub-pixel 120 can be reduced while maximizing the width of the conductive channel of the second electrode 12.

[0221] For example, as shown in Figures 8 and 9, the second limiting structure 220 is shaped like a broken line to bypass the connection electrode 012 of the first color sub-pixel 110 and the connection electrode 012 of the second color sub-pixel 120 as much as possible, and to maintain a large distance from the third limiting structure 230. Setting the shape of the second limiting structure 220 as a broken line can change the flow path of the lateral leakage current.

[0222] In some examples, as shown in Figures 8 and 9, each of the third corner 0133 and the fourth corner 0134 has a second limiting structure 220 and at least one fourth limiting structure 240 on both sides.

[0223] By providing the second limiting structure 220 and the third limiting structure 230 at the third corner 0133 and the fourth corner 0134 to expose the apex of the third corner 0133 and the fourth corner 0134, it is beneficial to increase the area of ​​the conductive channel of the second electrode 12.

[0224] For example, as shown in Figures 8 and 9, a second limiting structure 220 and a fourth limiting structure 240 are provided on both sides of the third corner 0133. For example, a second limiting structure 220 and a fourth limiting structure 240 are provided on both sides of the fourth corner 0134.

[0225] For example, as shown in Figures 8 and 9, there is a gap between the second limiting structure 220 and the third limiting structure 230, and a gap between the second limiting structure 220 and the fourth limiting structure 240. The gap between the third limiting structure 230 and the fourth limiting structure 240 is greater than the gap between the third limiting structure 230 and the second limiting structure 220.

[0226] In some examples, as shown in Figures 8 and 9, two first defining structures 210 located on either side of the same third color sub-pixel 130 are symmetrically distributed with respect to the center line of the light-emitting area 100 in the third color sub-pixel 130 extending along the second direction.

[0227] By setting the two first limiting structures 210 on both sides of the same third color sub-pixel 130 to be symmetrically distributed, it is beneficial to make the width of the conduction channel of the second electrode 12 on both sides of the third color sub-pixel 130 more balanced.

[0228] In some examples, as shown in Figures 8 and 9, the center of the light-emitting area 100 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120 is provided with two third defining structures 230 on one side of the first direction and a fourth defining structure 240 on the other side of the first direction. Each third defining structure 230 surrounds a corner, and a straight line extending along the first direction passes through the gap between the two third defining structures 230 and the first inclined portion 212.

[0229] By setting the relative positional relationship of the first inclined portion 212, the third limiting structure 230, and the fourth limiting structure 240 of the first limiting structure 210, the leakage path between the third color sub-pixel 130 and other color sub-pixels can be increased while maximizing the width of the conduction channel of the second electrode 12.

[0230] For example, as shown in Figures 8 and 9, the center of the light-emitting area 100 of the first color sub-pixel 110 is provided with two third limiting structures 230 on one side of the first direction and a fourth limiting structure 240 on the other side of the first direction. For example, the center of the light-emitting area 100 of the second color sub-pixel 120 is provided with two third limiting structures 230 on one side of the first direction and a fourth limiting structure 240 on the other side of the first direction.

[0231] For example, as shown in Figures 8 and 9, the two third defining structures 230 located on one side of the same light-emitting region 100 have different lengths in the second direction. For example, in the second direction, the length of the fourth defining structure 240 is no greater than the length of the longer of the two third defining structures 230.

[0232] In some examples, as shown in FIG8, in at least one first defining structure 210, the main body portion 211 extends along a second direction. For example, in each first defining structure 210, the main body portion 211 extends along a second direction.

[0233] The first inclined portion 212 in the example shown in Figure 8 can have the same features as the first inclined portion 212 in the example shown in Figure 1, and will not be described again here.

[0234] In some examples, as shown in Figure 8, at least one second defining structure 220 has three parts that are all linear structures; at least one third defining structure 230 includes two substructures 231 extending along a first direction and a second direction respectively, at least a portion of the two substructures 231 being linear structures; and at least one fourth defining structure 240 is a linear structure extending along a second direction.

[0235] For example, as shown in Figure 8, in each of the second limiting structures 220, all three parts are linear structures; each of the third limiting structures 230 includes two substructures 231 extending along the first direction and the second direction respectively, and at least a portion of the two substructures 231 is a linear structure; each of the fourth limiting structures 240 is a linear structure extending along the second direction.

[0236] In some examples, as shown in FIG9, in at least one first defining structure 210, the main body portion 211 includes at least one first curved portion 2113, at least one second defining structure 220 includes at least one second curved portion 2202, at least one third defining structure 230 includes at least one third curved portion 232, and at least one fourth defining structure 240 includes at least one fourth curved portion 241.

[0237] By providing a first curved portion 2113 in the first limiting structure 210, a second curved portion 2202 in the second limiting structure 220, a third curved portion 232 in the third limiting structure 230, and a fourth curved portion 241 in the fourth limiting structure 240, the length of the edges of the limiting structures is increased, thereby increasing the area of ​​the sidewalls of the limiting structures. This requires the charge-generating layer at the location of the limiting structure to be distributed over a larger area of ​​the sidewalls, increasing the effective isolation area of ​​the limiting structure. Consequently, the charge-generating layer can be thinned or broken more effectively by the sidewalls of the limiting structure, thereby increasing the lateral resistance of the charge-generating layer, preventing lateral leakage, avoiding signal crosstalk between adjacent sub-pixels, and improving display quality.

[0238] For example, as shown in FIG8, the first electrode 11 of the second color sub-pixel 120 includes a main electrode 011 and a connecting electrode 012, as well as a protruding electrode 013. The protruding electrode 013 can block part of the pixel circuit structure between itself and the substrate 01, such as blocking a thin-film transistor. For example, in the direction perpendicular to the substrate 01, at least one of the third defining structure 230 and the fourth defining structure 240 overlaps with the protruding electrode. For example, in the direction perpendicular to the substrate 01, both the third defining structure 230 and the fourth defining structure 240 overlap with the protruding electrode.

[0239] Figure 10 is a schematic diagram of a pixel unit and its defined structure in the display substrate shown in Figure 8.

[0240] In some examples, as shown in FIG10, the edge of the first inclined portion 212 away from at least one of the first color sub-pixel 110 and the second color sub-pixel 120 is a first edge 2130, and the edge of the light-emitting area 100 of the third color sub-pixel 130 close to the first color sub-pixel 110 and the second color sub-pixel 120 is a second edge 131. The second edge 131 extends along a second direction, and the distance d between the straight line passing through the first edge 2130 and extending along the second direction and the second edge 131 is not greater than 5 micrometers. For example, the second edge 131 can be located on the side of the straight line passing through the first edge 2130 away from the first color sub-pixel 110, or it can be located between the aforementioned straight line and the first color sub-pixel 110. For example, the value of d can be 0, 1, 2, 3, 4, or 5. The specific values ​​of d in this embodiment are not listed one by one, and can be any value between 0 and 5.

[0241] For example, as shown in Figure 10, in the plan view, the straight line extending along the second direction passes through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, which is beneficial to increase the size of the conductive channel of the second electrode 12 at the upper left and upper right corners of the second color sub-pixel 120.

[0242] In some examples, as shown in Figure 10, the edge of the first inclined portion 212 protrudes relative to the edge of the first region 101 that is away from the second region 102, and the distance e between two straight lines extending along the first direction passing through these two edges is not less than 4 micrometers and not greater than half the distance between the light-emitting areas 100 of two adjacent sub-pixels. For example, when the straight line extending along the second direction passes through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, the value of e can be 4 to 6; when the straight line extending along the second direction does not pass through the first inclined portion 212 and the light-emitting area 100 of the third color sub-pixel 130, the value of e is greater than 6.

[0243] By setting the values ​​of d and e as described above, the carrier leakage path between the first color sub-pixel 110 and the third color sub-pixel 130 can be made greater than 25 micrometers, thereby lengthening the lateral leakage path between the first color sub-pixel 110 and the third color sub-pixel 130 and reducing the leakage current. Similarly, the first inclined portion 212 between the second color sub-pixel 120 and the third color sub-pixel 130 also satisfies the above-mentioned dimensional relationship setting, which can lengthen the lateral leakage path between the second color sub-pixel 120 and the third color sub-pixel 130 and reduce the leakage current.

[0244] In some examples, as shown in FIG10, in the first direction, the size of the light-emitting area 100 of the first color sub-pixel 110 and the size of the light-emitting area 100 of the second color sub-pixel 120 are both no greater than the distance between the two ends of the second defining structure 220 in the first direction.

[0245] By setting the distance between the two ends of the second defining structure 220 in the first direction and the size relationship between the light-emitting area 100 of the sub-pixel, it is beneficial to extend the leakage path between the first color sub-pixel 110 and the second color sub-pixel 120.

[0246] For example, the distance 'a' in the first direction between one end of the second defining structure 220 in the first direction and the edge extending in the second direction of the light-emitting area 100 of the second color sub-pixel 120 is greater than 0. The distance 'a' in the first direction between one end of the second defining structure 220 in the first direction and the edge extending in the second direction of the light-emitting area 100 of the first color sub-pixel 110 is greater than 0.

[0247] By setting the value of 'a', the leakage path between the first color sub-pixel 110 and the second color sub-pixel 120 can be made larger than the distance between the light-emitting areas 100 (e.g., 21 micrometers). For example, the leakage path can be 23 to 26 micrometers.

[0248] In some examples, as shown in FIG10, at least one third defining structure 230 includes a substructure 231 extending along a second direction, and a third color subpixel 130 includes a third edge 132 extending along a first direction, the extension of the third edge 132 passing through the substructure 231 or being flush with the edge of the substructure 231, such as b being greater than 0; and / or, the extension of the third edge 132 passing through a fourth defining structure 240 or being flush with the edge of the fourth defining structure 240.

[0249] For example, as shown in Figure 10, the distance x between the light-emitting area 100 of the third color sub-pixel 130 and the first defining structure 210 is 2 to 6 micrometers. For example, the value of x can be 2, 3, 4, 5, or 6. This embodiment of the present disclosure will not list the specific values ​​of x one by one, and it can be any value between 2 and 6.

[0250] For example, as shown in Figure 10, the width y of the first limiting structure 210 in the first direction is 3 to 5 micrometers. For example, the value of y can be 3, 4, or 5. This embodiment of the present disclosure will not list the specific values ​​of y one by one, but it can be any value between 3 and 5.

[0251] For example, as shown in Figure 10, the value of the distance z between the first limiting structure 210 and the third limiting structure 230 is related to the distance between pixel openings (PDL Gap). For example, with a PDL Gap of 21 micrometers, the z value satisfies: 2 < z < 6; for every 1 micrometer increase in PDL Gap, the maximum value range of z increases by 1 micrometer. For example, when the PDL Gap increases to 23 micrometers, the z value satisfies: 2 < z < 8.

[0252] Figures 11 and 12 are schematic diagrams of partial planar structures of display substrates provided according to different examples of embodiments of the present disclosure.

[0253] The display substrate shown in Figure 11 differs from the display substrate shown in Figure 8 in that it also includes at least one auxiliary electrode line 500. The display substrate shown in Figure 12 differs from the display substrate shown in Figure 9 in that it also includes at least one auxiliary electrode line 500.

[0254] In some examples, as shown in Figures 11 and 12, the display substrate further includes at least one auxiliary electrode line 500, which is disposed in the same layer as the first electrode 11 and spaced apart. At least a portion of each auxiliary electrode line 500 extends along a first direction. Each auxiliary electrode line 500 includes at least one contact pad 510, which is electrically connected to the second electrode 12 through a via 511 in a film layer between itself and the second electrode 12. The film layer includes at least one of the light-emitting functional layers 13. A cross-sectional view of the connection between the contact pad 510 and the second electrode 12 through the via in this example can be seen in Figure 7.

[0255] By providing an auxiliary electrode line 500 electrically connected to the second electrode 12 on the same layer as the first electrode 11, it is beneficial to reduce lateral leakage between adjacent and different color sub-pixels to reduce crosstalk, while reducing the resistance of the second electrode 12 to improve the problem of increased resistance of the second electrode 12 caused by the setting of the limited structure, and to minimize the increase in power consumption of the display substrate.

[0256] For example, the auxiliary electrode lines can be made of the same material as the first electrode and formed in the same patterning process.

[0257] For example, as shown in Figures 11 and 12, an auxiliary electrode line 500 is provided between any two adjacent pixel units 300 arranged along the second direction. For example, each auxiliary electrode line 500 may include multiple contact pads 510. For example, the ratio of the number of pixel units 300 arranged along the first direction to the number of contact pads 510 provided on the same auxiliary electrode line 500 is not less than 2. For example, the film layer between the film layer containing the contact pads 510 and the second electrode 12 may include a pixel defining portion, a defining structure, and a light-emitting functional layer 13, etc., and the via 511 penetrates the common layer and the pixel defining portion in the light-emitting functional layer 13.

[0258] In some examples, as shown in Figures 11 and 12, in the second direction, the distance between the first electrodes 11 of adjacent third color sub-pixels 130 is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120; each of the at least one contact pad 510 is located between the first electrodes 11 of adjacent third color sub-pixels 130 in the second direction, and in the second direction, the size of the contact pad 510 is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120. For example, in the second direction, the size of the via is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120.

[0259] After forming the light-emitting functional layer 13, it is easy to implement the process of forming vias exposing contact pads 510 in the light-emitting functional layer 13 and the pixel electrode by laser drilling. The size of the via formed by laser drilling is relatively large. For example, if the size of the via and the contact pad 510 is larger than the distance between the first electrodes 11 of the adjacent first color sub-pixels 110 and second color sub-pixels 120, by placing the via and the contact pad 510 between the first electrodes 11 of the adjacent third color sub-pixels 130, interference between the contact pad 510 and the first electrode 11 can be avoided.

[0260] In some examples, as shown in Figures 11 and 12, the display substrate further includes a spacer 600 located on the side of the first electrode 11 away from the substrate 01. For example, the spacer 600 may be located on the side of the pixel defining portion away from the substrate 01. The orthographic projection of the spacer 600 on the substrate 01 does not overlap with the orthographic projection of the at least one auxiliary electrode line 500 on the substrate 01. For example, the spacer 600 does not overlap with any of the auxiliary electrode lines 500.

[0261] By setting the spacer 600 to not overlap with the auxiliary electrode line 500, the auxiliary electrode line 500 can be prevented from affecting the support effect of the spacer 600 on the fine metal mask.

[0262] In some examples, as shown in Figures 11 and 12, spacers 600 are located between first electrodes 11 of third color sub-pixels 130 that are adjacently disposed in the second direction, and there are multiple spacers 600 and multiple contact pads 510, with the multiple spacers 600 and multiple contact pads 510 alternating in at least one of the first and second directions.

[0263] For example, as shown in Figures 11 and 12, the auxiliary electrode line 500 passes around the spacer 600. For example, the portion of the auxiliary electrode line 500 that passes around the spacer 600 and the portion that passes over the contact pad 510 extends along the first direction.

[0264] For example, as shown in Figures 11 and 12, spacers 600 are disposed between the first electrodes 11 of adjacent third color sub-pixels 130 along the second direction. For example, spacers 600 or contact pads 510 are disposed between the first electrodes 11 of adjacent third color sub-pixels 130 along the second direction. The ratio of the number of pixel units 300 arranged along the first direction to the number of spacers 600 arranged along the first direction is not less than 2. For example, the ratio of the number of spacers 600 arranged along the first direction to the number of contact pads 510 in the same auxiliary electrode line 500 is 0.9 to 1.1. For example, spacers 600 and contact pads 510 are arranged alternately along the first direction. For example, spacers 600 and contact pads 510 are arranged alternately along the second direction.

[0265] In some examples, as shown in Figures 11 and 12, the defining structure does not overlap with at least one contact pad 510 along a direction perpendicular to the substrate 01. For example, the defining structure does not overlap with any of the contact pads 510. For example, the defining structure may be a groove in the pixel defining portion.

[0266] By setting the limiting structure to not overlap with the contact pad 510, the edge of the contact pad 510 can be avoided from being exposed, thus avoiding process defects such as silver precipitation on the contact pad 510.

[0267] For example, as shown in Figures 11 and 12, the defining structure may overlap with a portion of the auxiliary electrode line 500 other than the contact pad 510. For example, the portion of the auxiliary electrode line 500 that passes around the spacer 600 overlaps with the first defining structure 210. For example, the first inclined portion 212 overlaps with the portion of the auxiliary electrode line 500 that passes around the spacer 600.

[0268] For example, as shown in Figures 11 and 12, the edge of the first electrode 11 of the third color sub-pixel 130 that faces the contact pad 510 includes a zigzag edge to avoid the contact pad 510.

[0269] For example, as shown in Figures 11 and 12, the distance between the contact pad 510 and the orthographic projection of the defining structure on the substrate 01 is 3 to 6 micrometers.

[0270] In some examples, as shown in Figures 11 and 12, at least one of the plurality of first defining structures 210 further includes a second inclined portion 213 connected to the body portion 211, the second inclined portion 213 being bent relative to the body portion 211 toward the side away from the contact pad 510 to avoid the contact pad 510.

[0271] By providing a second inclined portion 213 in the first limiting structure 210, it is possible to reduce the lateral leakage current between the third color sub-pixel 130 and other color sub-pixels while avoiding the overlap between the first limiting structure 210 and the contact pad 510.

[0272] In some examples, as shown in Figures 11 and 12, the orthographic projection of the second tilted portion 213 on the projection line does not overlap with the orthographic projection of the light-emitting area 100 of the third color sub-pixel 130 on the projection line. For example, the orthographic projection of the second tilted portion 213 on the projection line overlaps with the orthographic projection of the first area 101 of at least one of the first color sub-pixel 110 and the second color sub-pixel 120 on the projection line.

[0273] In some examples, as shown in Figures 11 and 12, the orthographic projection of the edge of the second inclined portion 213 onto the projection line lies entirely within the orthographic projection of the light-emitting area 100 of one of the first color sub-pixels 110 and the second color sub-pixels 120 onto the projection line. For example, the orthographic projection of the edge of the second inclined portion 213 onto the projection line lies entirely within the orthographic projection of the first area 101 onto the projection line.

[0274] By setting the relative positional relationship between the edges of the first inclined portion 212, the second inclined portion 213, and the first region 101, it is possible to reduce the lateral leakage between the third color sub-pixel 130 and other color sub-pixels, and also to prevent the first limiting structure 210 from overlapping with the contact pad 510.

[0275] For example, as shown in Figures 11 and 12, the same first defining structure 210 may include two first tilted portions 212. For example, the same first defining structure 210 may include one first tilted portion 212 and one second tilted portion 213. For example, one of the two first defining structures 210 located on either side of the same third color sub-pixel 130 may include a second tilted portion 213, while the other may not include a second tilted portion 213. For example, in the same first defining structure 210, the tilting directions of the first tilted portion 212 and the second tilted portion 213 are opposite.

[0276] For example, as shown in Figures 11 and 12, along the second direction, the size of the first inclined portion 212 is larger than the size of the second inclined portion 213.

[0277] In some examples, as shown in Figures 11 and 12, a third defining structure 230 is disposed around two adjacent corners 0130 in a second direction of the first electrode 11 of at least one of the first color sub-pixels 110 and the second color sub-pixels 120 near the corner of at least one contact pad 510.

[0278] To avoid contact pad 510, a portion of the first inclined portion 212 in the first limiting structure 210 is replaced with a second inclined portion 213. Since the second inclined portion 213 is smaller, its blocking effect on lateral leakage current between the third color sub-pixel 130 and other color sub-pixels is poor. By setting the third limiting structure 230 to a shape surrounding the two corners, it is beneficial to reduce crosstalk between the third color sub-pixel 130 and other color sub-pixels near the contact pad 510. By setting the aforementioned third limiting structure 230 surrounding the two corners, the path of lateral leakage current between the third color sub-pixel 130 and other color sub-pixels can be extended to 35-45 micrometers.

[0279] For example, as shown in Figures 11 and 12, a third defining structure 230 is disposed near the corner of the first electrode 11 of the second color sub-pixel 120, around two adjacent corners 0130 of the first electrode 11 of the sub-pixel in a second direction.

[0280] For example, as shown in Figures 11 and 12, the first color sub-pixel 110 has two third limiting structures 230 on one side of its center line extending along the second direction, and a fourth limiting structure 240 on the other side. For example, the second color sub-pixel 120 has a third limiting structure 230 on one side of its center line extending along the second direction, and a fourth limiting structure 240 on the other side.

[0281] Another embodiment of this disclosure provides a display substrate. Referring to FIGS. 1 to 12, the display substrate includes a substrate 01, a plurality of sub-pixels 10 located on the substrate 01, and a defining structure 20. Each sub-pixel 10 includes a first electrode 11, a light-emitting functional layer 13, and a second electrode 12 stacked thereon. The first electrode 11 is located between the light-emitting functional layer 13 and the substrate 01. The light-emitting functional layer 13 includes a plurality of film layers. The defining structure 20 is located at least between the light-emitting regions 100 of adjacent sub-pixels of different colors. The thickness of the portion of the film layers in the light-emitting functional layer 13 located at at least a portion of the position on the defining structure 20 is less than the thickness of the portion located within the light-emitting region 100 of the sub-pixel 10. The plurality of sub-pixels 10 includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The defining structure 20 includes a first defining structure 210 located between the light-emitting areas 100 of the two types of color sub-pixels. There are multiple first defining structures 210. At least one first defining structure 210 includes a main body portion 211 and a first inclined portion 212 connected to each other. The orthographic projection of the first inclined portion 212 on a projection line extending along a second direction does not overlap with the orthographic projection of the light-emitting area 100 of one of the two types of color sub-pixels 10 on the projection line, but the orthographic projection of the first inclined portion 212 on the projection line overlaps with the orthographic projection of the light-emitting area 100 of the other type of color sub-pixel 10 on the projection line. The first direction intersects the second direction. As shown in FIG1, the distance between the light-emitting area 100 of the other type of color sub-pixel 10 and at least a portion of the first inclined portion 212 is a first sub-distance d01, and the distance between the light-emitting area 100 of the other type of color sub-pixel 10 and at least a portion of the main body portion 211 is a second sub-distance d02. The first sub-distance d01 is greater than the second sub-distance d02.

[0282] In the display substrate provided in this disclosure, while a first limiting structure 210 is provided between two color sub-pixels, the distance relationship between the first inclined portion and the light-emitting area 100 of the other of the two color sub-pixels is set according to the positional relationship between the light-emitting area 100 of the two color sub-pixels and the first limiting structure 210. This helps to alleviate the problem of pixel light stealing in the display substrate, while also enabling the second electrode 12 of the sub-pixel to have a larger area of ​​conductive channel, avoiding affecting the conductivity of the second electrode 12 of the sub-pixel, thereby improving the display effect of the display substrate.

[0283] When the main body 211 does not include the curved portion, the first sub-distance can refer to the distance between the inclined portion and the light-emitting area 100 at each position except the position where it is in contact with the main body 211, and the second sub-distance can be the distance between the portion between the recessed portion 2111 of the main body 211 and the first inclined portion and the light-emitting area 100.

[0284] When the main body 211 includes a curved portion, the first sub-distance can refer to the distance between the first inclined portion and the light-emitting area 100 at each position other than the position where it is in contact with the main body 211. The second sub-distance can be the distance between the portion of the main body 2111 that is closest to the light-emitting area 100 and the light-emitting area 100 in the portion between the recessed portion 2111 of the main body 211 and the first inclined portion.

[0285] In some examples, as shown in Figures 1 to 12, the edge of the first inclined portion 212 protrudes relative to the edge of the other light-emitting area 100 of the two color sub-pixels.

[0286] In some examples, as shown in Figures 1 to 12, multiple sub-pixels 10 are divided into multiple pixel units 300. Each pixel unit 300 includes a first color sub-pixel 110, a second color sub-pixel 120, and a third color sub-pixel 130. The first color sub-pixel 110 and the second color sub-pixel 120 are arranged along a second direction, and the first color sub-pixel 110 and the third color sub-pixel 130 are arranged along a first direction. The two color sub-pixels include sub-pixels located in the same pixel unit 300, and / or include sub-pixels located in two adjacent pixel units 300 arranged in the first direction. The two color sub-pixels include one of the first color sub-pixel 110 and the second color sub-pixel 120 and a third color sub-pixel 130. The other of the two color sub-pixels includes at least one of the first color sub-pixel 110 and the second color sub-pixel 120. In the first defining structure 210, the first inclined portion 212, relative to at least a portion of the main body portion 211, bends toward the side of the light-emitting area 100 of the third color sub-pixel 130 extending in the second direction, and the extension direction of at least a portion of the first inclined portion 212 intersects with the extension direction of each side of the light-emitting area 100 of the third color sub-pixel 130.

[0287] In some examples, as shown in Figures 1 to 12, multiple pixel units 300 are divided into multiple pixel groups 400. Each pixel group 400 includes pixel units 300 arranged along a second direction. Each pixel group includes a first sub-pixel group 410 and a second sub-pixel group 420. The first sub-pixel group 410 includes multiple first color sub-pixels 110 and multiple second color sub-pixels 120 arranged along the second direction. The second sub-pixel group 420 includes multiple third color sub-pixels 130 arranged along the second direction. In the first defining structure 210 located between the adjacent first sub-pixel groups 410 and second sub-pixel groups 420, a gap is provided between two adjacent first defining structures 210.

[0288] In some examples, as shown in Figures 1 to 12, the limiting structure 20 further includes a second limiting structure 220 located between the adjacent first color sub-pixel 110 and the second color sub-pixel 120. The second limiting structure 220 is spaced apart from the first limiting structure 210, and in the first direction, the size of the light-emitting area 100 of the first color sub-pixel 110 and the second color sub-pixel 120 is not greater than the size of the second limiting structure 220.

[0289] In some examples, as shown in Figures 1 to 12, the display substrate further includes at least one auxiliary electrode line 500, which is disposed in the same layer as the first electrode 11 and spaced apart. At least a portion of each of the at least one auxiliary electrode line 500 extends along a first direction. Each auxiliary electrode line 500 includes at least one contact pad 510. The at least one contact pad 510 is electrically connected to the second electrode 12 through a via in a film layer between it and the second electrode 12. The film layer includes at least one of the light-emitting functional layers 13.

[0290] In some examples, as shown in Figures 1 to 12, the defined structure 20 does not overlap with at least one contact pad 510 in a direction perpendicular to the substrate 01.

[0291] In some examples, as shown in Figures 1 to 12, at least one of the plurality of first defining structures 210 further includes a second inclined portion 213 connected to the main body portion 211, the second inclined portion 213 being bent relative to the main body portion 211 toward the side away from the contact pad 510.

[0292] In some examples, as shown in Figures 1 to 12, the orthographic projection of the second inclined portion 213 on the projection line does not overlap with the orthographic projection of the light-emitting area 100 of the third color sub-pixel 130 on the projection line.

[0293] In some examples, as shown in Figures 1 to 12, each of at least one contact pad 510 is located between the first electrodes 11 of adjacent third color sub-pixels 130 in a second direction, and in the second direction, the size of the contact pad 510 is greater than the distance between the first electrodes 11 of adjacent first color sub-pixels 110 and second color sub-pixels 120.

[0294] In some examples, as shown in Figures 1 to 12, the display substrate further includes a spacer 600 located on the side of the first electrode 11 away from the substrate 01; the orthographic projection of the spacer 600 on the substrate 01 does not overlap with the orthographic projection of at least one auxiliary electrode line 500 on the substrate 01.

[0295] The sub-pixels, limiting structures, pixel limiting parts, and other structures in this embodiment can have the same features as the corresponding structures in the above embodiments, and will not be described again here.

[0296] Figure 13 is a schematic block diagram of a display device according to another embodiment of the present disclosure. As shown in Figure 13, a display device provided in this embodiment includes any of the above-described display substrates. In the display device using the above-described display substrate, while a first limiting structure 210 is provided between two color sub-pixels, the distance between the first inclined portion 212 and the light-emitting area 100 of the other of the two color sub-pixels is set according to the positional relationship between the light-emitting area 100 of the two color sub-pixels and the first limiting structure 210. This helps to alleviate the problem of pixel light stealing in the display substrate, and at the same time, it makes the second electrode 12 of the sub-pixel have a larger area of ​​conductive channel, avoiding affecting the conductivity of the second electrode 12 of the sub-pixel, thereby improving the display effect of the display substrate.

[0297] For example, a display device may or may not have a color filter layer.

[0298] For example, the display device also includes a cover plate located on the light-emitting side of the display substrate.

[0299] For example, the display device can be an organic light-emitting diode display device or other display device, as well as any product or component with display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator that includes the display device. This embodiment is not limited to this.

[0300] The following points need to be explained:

[0301] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0302] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0303] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A display substrate, comprising: Substrate; Multiple sub-pixels are located on the substrate. At least some of the sub-pixels include a first electrode, a light-emitting functional layer and a second electrode stacked together. The first electrode is located between the light-emitting functional layer and the substrate. The light-emitting functional layer includes multiple film layers. A defined structure is located at least between the light-emitting regions of adjacent and different color sub-pixels, wherein the thickness of at least a portion of the film layer in the light-emitting functional layer located at at least a portion of the defined structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel; Wherein, the plurality of sub-pixels include at least two types of color sub-pixels arranged and adjacent to each other along a first direction, and the light-emitting area of ​​one of the two types of color sub-pixels includes a first area and a second area arranged along a second direction, wherein the orthographic projection of the first area on a projection line extending along the second direction does not overlap with the orthographic projection of the light-emitting area of ​​the other color sub-pixel on the projection line, and the first direction intersects with the second direction. The defining structure includes a first defining structure located between the light-emitting areas of the two color sub-pixels. There are multiple first defining structures. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the first area on the projection line. The first inclined portion bends relative to the main body portion in a direction away from the sub-pixel where the first area is located. At least a portion of the extension direction of the first inclined portion intersects both the first direction and the second direction. 2.The display substrate of claim 1, wherein, The edge of the first inclined portion protrudes relative to the edge of the first region that is far from the second region. 3.The display substrate according to claim 1 or 2, wherein, The plurality of sub-pixels are divided into a plurality of pixel units, each pixel unit including a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the first color sub-pixel and the second color sub-pixel are arranged along the second direction, and the first color sub-pixel and the third color sub-pixel are arranged along the first direction; The two color sub-pixels include sub-pixels located in the same pixel unit, and / or include sub-pixels located in two pixel units that are adjacent to each other in the first direction; The two color sub-pixels include one of the first color sub-pixel and the second color sub-pixel and the third color sub-pixel, wherein at least one of the first color sub-pixel and the second color sub-pixel includes the first region; In the first defined structure, the first inclined portion bends toward the side of the center line extending along the second direction of the light-emitting area of ​​the third color sub-pixel, relative to at least a portion of the main body portion, and the extending direction of the at least portion of the first inclined portion intersects with the extending direction of each side of the light-emitting area of ​​the third color sub-pixel. 4.The display substrate of claim 3, wherein, The plurality of pixel units are divided into a plurality of pixel groups. Each pixel group includes pixel units arranged along the second direction. Each pixel group includes a first sub-pixel group and a second sub-pixel group arranged along the first direction. The first sub-pixel group includes a plurality of first color sub-pixels and a plurality of second color sub-pixels arranged along the second direction. The second sub-pixel group includes a plurality of third color sub-pixels arranged along the second direction. In the first defining structure located between the first sub-pixel group and the second sub-pixel group which are arranged adjacently, there is a gap between two adjacent first defining structures. 5.The display substrate of claim 4, wherein, The limiting structure further includes a second limiting structure located between the light-emitting areas of the adjacent first color sub-pixel and the second color sub-pixel. The second limiting structure is spaced apart from the first limiting structure, and in the first direction, the size of the light-emitting areas of both the first color sub-pixel and the second color sub-pixel is not greater than the size of the second limiting structure. 6.The display substrate of claim 5, wherein, The first electrode includes a main electrode and a connecting electrode connected to each other. Along a direction perpendicular to the substrate, the connecting electrode does not overlap with the light-emitting area of ​​the sub-pixel. The number of second defining structures is multiple, and at least some of the second defining structures include a bent portion.

7. The display substrate according to any one of claims 3-6, further comprising: At least one auxiliary electrode line is disposed in the same layer as the first electrode and spaced apart from it, and at least a portion of each of the at least one auxiliary electrode lines extends along the first direction. Each auxiliary electrode line includes at least one contact pad, which is electrically connected to the second electrode through a via in a film layer between it and the second electrode. The film layer includes at least one of the light-emitting functional layers. 8.The display substrate of claim 7, wherein, Along a direction perpendicular to the substrate, the defining structure does not overlap with the at least one contact pad. 9.The display substrate of claim 8, wherein, At least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad. 10.The display substrate of claim 9, wherein, The orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line. 11.The display substrate of any one of claims 7-10, wherein, In the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; Each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

12. The display substrate according to any one of claims 7-11, further comprising: A spacer is located on the side of the first electrode away from the substrate. Wherein, the orthographic projection of the spacer on the substrate does not overlap with the orthographic projection of the at least one auxiliary electrode line on the substrate. 13.The display substrate of claim 6, wherein, The defining structure between the third color sub-pixel and other adjacent color sub-pixels includes only one first defining structure, and the defining structure between the adjacent first color sub-pixel and the second color sub-pixel includes only one second defining structure.

14. The display substrate according to claim 13, wherein, The second defining structure located between the first color sub-pixel and the second color sub-pixel in the same pixel group is a first type defining structure, and the second defining structure belonging to the first color sub-pixel and the second color sub-pixel in adjacent pixel groups is a second type defining structure. At least one of the first type defining structure and the second type defining structure includes the bending portion, and the shape of the second type defining structure is different from the shape of the first type defining structure. The second defining structure has at least one of its opposite ends in the first direction protruding relative to the edge of the first electrode of the first color sub-pixel and the second color sub-pixel. The main body includes a recessed portion disposed opposite to the protruding end of the second defining structure, and the orthographic projection of the first defining structure on the projection line does not overlap with the orthographic projection of the second defining structure on the projection line.

15. The display substrate according to claim 14, wherein, The first edge is the edge of the first inclined portion that is far away from at least one of the first color sub-pixel and the second color sub-pixel. The edge of the light-emitting area of ​​the third color sub-pixel that is close to the first color sub-pixel and the second color sub-pixel is the second edge. The second edge extends along the second direction. The distance between the second edge and the straight line that passes through the first edge and extends along the second direction is no more than 5 micrometers. The edge of the first inclined portion protrudes relative to the edge of the first region that is far from the second region, and the distance between two straight lines that pass through these two edges and extend along the first direction is not less than 4 micrometers and not greater than half the distance between the light-emitting areas of two adjacent sub-pixels. The distance between the first type of defined structure and the recess is 4 to 7 micrometers.

16. The display substrate according to claim 15, wherein, The dimension of the end of the second defining structure extending beyond the edge of the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel is 5 to 7 micrometers; The distance between the recessed portion and the light-emitting area of ​​the third color sub-pixel is 3 to 5 micrometers.

17. The display substrate according to claim 16, wherein, The distance between the portion of the main body other than the recessed portion and the light-emitting area of ​​the third color sub-pixel is 6 to 10 micrometers, the distance between the portion of the main body other than the recessed portion and the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel is 6 to 10 micrometers, and the width of the first defining structure in the first direction is 3 to 5 micrometers.

18. The display substrate according to any one of claims 13-17, wherein, Two first defining structures located on either side of the same third color sub-pixel are symmetrically distributed with respect to the center line of the light-emitting area in the third color sub-pixel extending along the second direction.

19. The display substrate according to claim 14, wherein, The main body portion, except for the recessed portion, consists of straight sections extending along the second direction. The first inclined portion includes an inclined segment and a straight segment. The inclined segment is located between the straight segment and the main body portion. The extension direction of the inclined segment intersects both the first direction and the second direction. The straight segment extends along the second direction. The portion of the second defining structure, excluding the bent portion, extends along the first direction.

20. The display substrate according to claim 14, wherein, In at least a portion of the plurality of first defining structures, the main body portion, excluding the recessed portion, includes at least one first curved portion, and in at least a portion of the plurality of second defining structures, at least a second curved portion is included.

21. The display substrate according to claim 20, wherein, The distances between the light-emitting area of ​​the third color sub-pixel and the recess and the at least one first curved portion are a first distance and a second distance, respectively, wherein the first distance is less than the second distance.

22. The display substrate according to claim 20, wherein, In the second direction, the size of the recess is larger than the size of the at least one first curved portion.

23. The display substrate according to any one of claims 13-17 and 19-22, further comprising: At least one auxiliary electrode line is disposed in the same layer as the first electrode and spaced apart from it, and at least a portion of each of the at least one auxiliary electrode lines extends along the first direction. Each auxiliary electrode line includes at least one contact pad, which is electrically connected to the second electrode through a via in a film layer between it and the second electrode. The film layer includes at least one of the light-emitting functional layers.

24. The display substrate according to claim 23, wherein, Along a direction perpendicular to the substrate, the defining structure does not overlap with the at least one contact pad.

25. The display substrate according to claim 24, wherein, At least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad; The orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line.

26. The display substrate according to claim 25, wherein, The orthographic projection of the edge of the second inclined portion onto the projection line lies entirely within the orthographic projection of the luminous area of ​​one of the first color sub-pixels and the second color sub-pixels onto the projection line.

27. The display substrate according to any one of claims 23-26, wherein, In the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; Each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

28. The display substrate according to any one of claims 23-27, wherein, Along a direction perpendicular to the substrate, the at least one auxiliary electrode line overlaps with at least one of the plurality of second defining structures.

29. The display substrate according to any one of claims 23-28, further comprising: A spacer is located on the side of the first electrode away from the substrate. The spacers are located between the first electrodes of the third color sub-pixels that are adjacent to each other in the second direction, and there are multiple spacers and multiple contact pads, which are arranged alternately in at least one of the first direction and the second direction.

30. The display substrate according to claim 6, wherein, The defining structure further includes a plurality of third defining structures and a plurality of fourth defining structures, each third defining structure surrounding at least the corner of the first electrode of at least one of the first color sub-pixels and the second color sub-pixels, and each fourth defining structure being located between the first color sub-pixel and at least one of the second color sub-pixels and the first defining structure.

31. The display substrate according to claim 30, wherein, Each of the second defined structures has opposite ends in the first direction that do not exceed the edges of the first electrode of at least one of the first color sub-pixels and the second color sub-pixels in the first direction.

32. The display substrate according to claim 31, wherein, The two first electrodes of the first color sub-pixel and the second color sub-pixel arranged adjacent to each other include four corners that are adjacent to each other. The first corner and the second corner are respectively surrounded by a third defining structure. The first corner and the second corner are two corners that are opposite to the first color sub-pixel and the second color sub-pixel in an oblique direction. The oblique direction is the direction that intersects with the arrangement direction of the first color sub-pixel and the second color sub-pixel.

33. The display substrate according to claim 32, wherein, A second defining structure and two third defining structures are provided between adjacent first color sub-pixels and second color sub-pixels. The second defining structure includes three parts arranged along the first direction. In the second direction, the first part of the three parts overlaps with one of the two third defining structures, the second part of the three parts does not overlap with either of the two third defining structures, and the third part of the three parts overlaps with the other of the two third defining structures. The first part and the third part extend along the first direction, and the extension direction of the second part intersects both the first direction and the second direction.

34. The display substrate according to claim 32, wherein, The third and fourth corner portions of the four corner portions are provided with the second limiting structure and at least one fourth limiting structure on both sides of each corner portion.

35. The display substrate according to claim 30, wherein, The first edge is the edge of the first inclined portion that is far from at least one of the first color sub-pixel and the second color sub-pixel. The light-emitting area of ​​the third color sub-pixel includes a second edge extending along the second direction. The distance between the straight line passing through the first edge and extending along the second direction and the second edge is no greater than 5 micrometers. The edge of the first inclined portion protrudes relative to the edge of the first region that is far from the second region, and the distance between two straight lines that pass through these two edges and extend along the first direction is not less than 4 micrometers and not greater than half the distance between the light-emitting areas of two adjacent sub-pixels.

36. The display substrate according to claim 35, wherein, In the first direction, the size of the light-emitting area of ​​the first color sub-pixel and the size of the light-emitting area of ​​the second color sub-pixel are both no greater than the distance between the two ends of the second defining structure in the first direction.

37. The display substrate according to claim 36, wherein, At least one third defining structure includes a substructure extending along the second direction, the third color sub-pixel including a third edge extending along the first direction, the extension of the third edge passing through the substructure or flush with the edge of the substructure; and / or, The extension line of the third edge passes through the fourth defining structure or is flush with the edge of the fourth defining structure.

38. The display substrate according to any one of claims 30-37, wherein, Two first defining structures located on either side of the same third color sub-pixel are symmetrically distributed with respect to the center line of the light-emitting area in the third color sub-pixel extending along the second direction.

39. The display substrate according to claim 32, wherein, The center of the light-emitting area of ​​at least one of the first color sub-pixel and the second color sub-pixel has two third defining structures on one side of the first direction and a fourth defining structure on the other side of the first direction. Each third defining structure surrounds a corner, and a straight line extending along the first direction passes through the gap between the two third defining structures and the first inclined portion.

40. The display substrate according to any one of claims 30-39, wherein, In at least one first defining structure, the main body is a linear structure extending along the second direction.

41. The display substrate according to claim 33, wherein, In at least one second defining structure, all three parts are linear structures; At least one third defining structure includes two substructures extending along the first direction and the second direction respectively, and at least a portion of the two substructures are linear structures; At least one fourth defining structure is a linear structure extending along the second direction.

42. The display substrate according to claim 31, wherein, In at least one first defining structure, the main body portion includes at least one first curved portion, at least one second defining structure includes at least one second curved portion, at least one third defining structure includes at least one third curved portion, and at least one fourth defining structure includes at least one fourth curved portion.

43. The display substrate according to any one of claims 30-37 and 40-42, further comprising: At least one auxiliary electrode line is disposed in the same layer as the first electrode and spaced apart from it, and at least a portion of each of the at least one auxiliary electrode lines extends along the first direction. Each auxiliary electrode line includes at least one contact pad, which is electrically connected to the second electrode through a via in a film layer between it and the second electrode. The film layer includes at least one of the light-emitting functional layers.

44. The display substrate according to claim 43, wherein, A third defining structure is provided around two adjacent corners in the second direction of the first electrode of at least one of the first color sub-pixels and the second color sub-pixels near the corner of the at least one contact pad.

45. The display substrate according to claim 43, wherein, Along a direction perpendicular to the substrate, the defining structure does not overlap with the at least one contact pad.

46. ​​The display substrate according to claim 45, wherein, At least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad; The orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line.

47. The display substrate according to claim 46, wherein, The orthographic projection of the edge of the second inclined portion onto the projection line lies entirely within the orthographic projection of the luminous area of ​​one of the first color sub-pixels and the second color sub-pixels onto the projection line.

48. The display substrate according to any one of claims 43-47, wherein, In the second direction, the distance between the first electrodes of adjacent third color sub-pixels is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels; Each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

49. The display substrate according to any one of claims 43-48, further comprising: A spacer is located on the side of the first electrode away from the substrate. The spacers are located between the first electrodes of the third color sub-pixels that are adjacent to each other in the second direction, and there are multiple spacers and multiple contact pads, which are arranged alternately in at least one of the first direction and the second direction.

50. A display substrate, comprising: Substrate; Multiple sub-pixels are located on the substrate. At least some of the sub-pixels include a first electrode, a light-emitting functional layer and a second electrode stacked together. The first electrode is located between the light-emitting functional layer and the substrate. The light-emitting functional layer includes multiple film layers. A defined structure is located at least between the light-emitting regions of adjacent and different color sub-pixels, wherein the thickness of at least a portion of the film layer in the light-emitting functional layer located at at least a portion of the position on the defined structure is less than the thickness of the portion located within the light-emitting region of the sub-pixel; The plurality of sub-pixels includes at least two types of color sub-pixels arranged adjacent to each other along a first direction. The defining structure includes a first defining structure located between the light-emitting areas of the two types of color sub-pixels. The number of first defining structures is plurality of them. At least one first defining structure includes a main body portion and a first inclined portion connected to each other. The orthographic projection of the first inclined portion on a projection line extending along a second direction does not overlap with the orthographic projection of the light-emitting area of ​​one of the two types of color sub-pixels on the projection line. The orthographic projection of the first inclined portion on the projection line overlaps with the orthographic projection of the light-emitting area of ​​the other of the two types of color sub-pixels on the projection line. The first direction intersects with the second direction. The distance between the light-emitting area of ​​the other of the two color sub-pixels and at least a portion of the first inclined portion is a first sub-distance, and the distance between the light-emitting area of ​​the other of the two color sub-pixels and at least a portion of the main body portion is a second sub-distance, wherein the first sub-distance is greater than the second sub-distance.

51. The display substrate according to claim 50, wherein, The edge of the first inclined portion protrudes relative to the edge of the light-emitting area of ​​the other of the two color sub-pixels.

52. The display substrate according to claim 50 or 51, wherein, The plurality of sub-pixels are divided into a plurality of pixel units, each pixel unit including a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the first color sub-pixel and the second color sub-pixel are arranged along the second direction, and the first color sub-pixel and the third color sub-pixel are arranged along the first direction; The two color sub-pixels include sub-pixels located in the same pixel unit, and / or include sub-pixels located in two pixel units that are adjacent to each other in the first direction; The two color sub-pixels include one of the first color sub-pixel and the second color sub-pixel and the third color sub-pixel, and the other of the two color sub-pixels includes at least one of the first color sub-pixel and the second color sub-pixel; In the first defined structure, the first inclined portion bends toward the side of the center line extending along the second direction of the light-emitting area of ​​the third color sub-pixel, relative to at least a portion of the main body portion, and the extending direction of the at least portion of the first inclined portion intersects with the extending direction of each side of the light-emitting area of ​​the third color sub-pixel.

53. The display substrate according to claim 52, wherein, The plurality of pixel units are divided into a plurality of pixel groups. Each pixel group includes pixel units arranged along the second direction. Each pixel group includes a first sub-pixel group and a second sub-pixel group arranged along the first direction. The first sub-pixel group includes a plurality of first color sub-pixels and a plurality of second color sub-pixels arranged along the second direction. The second sub-pixel group includes a plurality of third color sub-pixels arranged along the second direction. In the first defining structure located between the first sub-pixel group and the second sub-pixel group which are arranged adjacently, there is a gap between two adjacent first defining structures.

54. The display substrate according to claim 53, wherein, The limiting structure further includes a second limiting structure located between the adjacent first color sub-pixel and the second color sub-pixel. The second limiting structure is spaced apart from the first limiting structure, and in the first direction, the size of the light-emitting area of ​​both the first color sub-pixel and the second color sub-pixel is not greater than the size of the second limiting structure.

55. The display substrate according to any one of claims 52-54, further comprising: At least one auxiliary electrode line is disposed in the same layer as the first electrode and spaced apart from it, and at least a portion of each of the at least one auxiliary electrode lines extends along the first direction. Each auxiliary electrode line includes at least one contact pad, which is electrically connected to the second electrode through a via in a film layer between it and the second electrode. The film layer includes at least one of the light-emitting functional layers.

56. The display substrate according to claim 55, wherein, Along a direction perpendicular to the substrate, the defining structure does not overlap with the at least one contact pad.

57. The display substrate according to claim 56, wherein, At least one of the plurality of first defining structures further includes a second inclined portion connected to the main body portion, the second inclined portion being bent relative to the main body portion toward a side away from the contact pad.

58. The display substrate according to claim 57, wherein, The orthographic projection of the second inclined portion on the projection line does not overlap with the orthographic projection of the luminous area of ​​the third color sub-pixel on the projection line.

59. The display substrate according to claim 55, wherein, Each of the at least one contact pad is located between the first electrodes of adjacent third color sub-pixels in the second direction, and in the second direction, the size of the contact pad is greater than the distance between the first electrodes of adjacent first color sub-pixels and second color sub-pixels.

60. The display substrate according to any one of claims 55-59, further comprising: A spacer is located on the side of the first electrode away from the substrate. Wherein, the orthographic projection of the spacer on the substrate does not overlap with the orthographic projection of the at least one auxiliary electrode line on the substrate.

61. A display device comprising the display substrate according to any one of claims 1-60.

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