Display substrate, display panel and display apparatus

Abstract

A display substrate, a display panel and a display apparatus. The display substrate comprises a base substrate, a plurality of sub-pixels, a pixel definition layer, an inorganic pattern and an organic layer. The pixel definition layer comprises a plurality of pixel openings and a pixel definition portion; the inorganic pattern comprises a plurality of inorganic structures, each inorganic structure comprising a definition main body portion and a definition connection portion connected to each other; the organic layer comprises a plurality of organic structures; each inorganic structure comprises a protruding portion protruding with respect to the edge of an organic structure; the pixel definition layer further comprises a plurality of definition openings, the definition openings being configured to expose at least part of the protruding portions of the inorganic structures, so as to isolate at least one layer of each light-emitting functional layer; at least part of the edge of the definition main body portion of each of the at least one inorganic structure is covered by the pixel definition portion, and at least 50% of at least part of the edge in the length direction thereof is at an equal distance from a first electrode. Thus, the sub-pixels exhibit high electrode flatness, thereby achieving uniform and good light-emitting effects.

Description

Display substrate, display panel and display device TECHNICAL FIELD

[0001] The present disclosure relates to a display substrate, a display panel and a display device. BACKGROUND

[0002] An organic light-emitting diode (OLED) display device is favored by users due to its advantages of rich colors, fast response time, foldability, etc. An organic light-emitting display device with a tandem structure improves the service life and brightness of the light-emitting device and reduces power consumption by adding at least one light-emitting layer and a charge generation layer in the organic light-emitting device, thereby meeting the needs of users for power consumption and service life of the display device.

[0003] SUMMARY

[0004] The embodiments of the present disclosure provide a display substrate, a display panel and a display device.

[0005] At least one embodiment of the present disclosure provides a display substrate, comprising a substrate substrate, a plurality of sub-pixels, a pixel defining layer, an inorganic pattern and an organic layer, the plurality of sub-pixels are located on the substrate substrate, the sub-pixel comprises a light-emitting functional layer, and a first electrode and a second electrode located on both sides of the light-emitting functional layer in a direction perpendicular to the substrate substrate, the first electrode is located between the light-emitting functional layer and the substrate substrate, the sub-pixel further comprises a pixel driving circuit, the pixel driving circuit is configured to drive the light-emitting functional layer of the sub-pixel to emit light; at least part of the pixel defining layer is located between the light-emitting functional layer and the first electrode, the pixel defining layer comprises a plurality of pixel openings and a pixel defining portion located between adjacent pixel openings, the pixel opening exposes at least part of the first electrode to define a light-emitting area of the sub-pixel; the inorganic pattern is located between the first electrode of the sub-pixel and the substrate substrate, the inorganic pattern comprises a plurality of inorganic structures, the inorganic structure comprises a defining body portion and a defining connecting portion connected to each other, the defining connecting portion is located on one side of the defining body portion, at least part of the defining body portion overlaps with the light-emitting area of the sub-pixel, and the first electrode of the sub-pixel is connected with the pixel driving circuit through a first connecting via in the defining connecting portion; the organic layer is located on the side of the inorganic pattern close to the substrate substrate and in contact with the inorganic pattern, the organic layer comprises a plurality of organic structures, the orthographic projection of the inorganic structure on the substrate substrate at least partially overlaps with the orthographic projection of the organic structure on the substrate substrate, the inorganic structure comprises a protruding portion protruding relative to the edge of the organic structure, wherein the light-emitting functional layer comprises a plurality of film layers, the pixel defining layer further comprises a plurality of defining openings, there is one defining opening between adjacent sub-pixels in at least part of the sub-pixels, the defining opening is configured to expose at least part of the protruding portion of the inorganic structure to isolate at least one layer in the light-emitting functional layer, at least part of the edge of the defining body portion of each of the inorganic structures in at least one inorganic structure is covered by the pixel defining portion, and the distance between the at least part of the edge and the first electrode along at least 50% of the length of the at least part is equal.

[0006] For example, according to at least one embodiment of the present disclosure, the plurality of sub-pixels comprise at least two different color sub-pixels, the defining body portion of the inorganic structure overlapping with the first electrode of the at least two different color sub-pixels each comprises a covered portion covered by the pixel defining portion, and the distance between the edge of each covered portion and the corresponding first electrode is approximately equal.

[0007] For example, a display substrate provided according to at least one embodiment of the present disclosure, the plurality of sub-pixels includes at least two different color sub-pixels, the defined body portion of the inorganic structure overlapping the first electrode of the at least two different color sub-pixels each includes an exposed portion exposed by the defined opening, and the distance between the edge of each exposed portion and the corresponding first electrode is substantially equal.

[0008] For example, a display substrate provided according to at least one embodiment of the present disclosure, the defined body portion of the inorganic structure overlapping the first electrode of at least one of the sub-pixels includes a first edge covered by the pixel defining portion and a second edge exposed by the defined opening, the distance between the first edge and the first electrode is less than the distance between the second edge and the first electrode.

[0009] For example, a display substrate provided according to at least one embodiment of the present disclosure, the plurality of inorganic structures includes a first inorganic structure, two portions of the edge of the defined body portion of the first inorganic structure spaced apart from each other are covered by the pixel defining portion, and the distance between the two portions of the edge of the first inorganic structure spaced apart from each other and the first electrode is substantially equal.

[0010] For example, a display substrate provided according to at least one embodiment of the present disclosure, the plurality of inorganic structures includes a first inorganic structure and a second inorganic structure adjacent to each other, the area of the light emitting region of the sub-pixel overlapping the first inorganic structure is less than the area of the light emitting region of the sub-pixel overlapping the second inorganic structure, at least a portion of the edge of the defined body portion of the first inorganic structure is covered by the pixel defining portion, and the distance between the portion of the edge of the first inorganic structure and the first electrode is a first distance, at least a portion of the edge of the defined body portion of the second inorganic structure is covered by the pixel defining portion, and the distance between the portion of the edge of the second inorganic structure and the first electrode is a second distance, the first distance is not less than the second distance.

[0011] For example, a display substrate provided according to at least one embodiment of the present disclosure, the first distance is greater than the second distance.

[0012] For example, a display substrate provided according to at least one embodiment of the present disclosure, the first electrode overlapping the first inorganic structure and the first electrode overlapping the second inorganic structure has the defined opening, a portion of the edge of the defined body portion of the first inorganic structure is exposed by the defined opening, and the distance between the defined opening and the pixel opening corresponding to the first inorganic structure is not less than the distance between the defined opening and the pixel opening corresponding to the second inorganic structure.

[0013] For example, the display substrate provided by at least one embodiment of the present disclosure, the plurality of inorganic structures includes a third inorganic structure, an area of the light-emitting region of the sub-pixel overlapping with the third inorganic structure is greater than an area of the light-emitting region of the sub-pixel overlapping with the first inorganic structure and less than an area of the light-emitting region of the sub-pixel overlapping with the second inorganic structure, at least part of an edge of the defined body part of the third inorganic structure is exposed by the defined opening, and a distance between the part of the edge and the first electrode along at least 50% of a length direction of the part of the edge is equal.

[0014] For example, the display substrate provided by at least one embodiment of the present disclosure further includes at least one support structure, the support structure is arranged in a direction parallel to the substrate substrate with the first electrode of the sub-pixel, a surface of the support structure away from the substrate substrate is farther away from the substrate substrate than at least part of a surface of the pixel defining part away from the substrate substrate, a normal projection of the support structure on the substrate substrate does not overlap with a normal projection of the defined opening on the substrate substrate.

[0015] For example, the display substrate provided by at least one embodiment of the present disclosure, the plurality of sub-pixels includes a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels, the plurality of sub-pixels are arranged as a plurality of first sub-pixel groups and a plurality of second sub-pixel groups arranged alternately along a first arrangement direction, the first sub-pixel group includes the first sub-pixel and the second sub-pixel arranged alternately along a second arrangement direction, the second sub-pixel group includes the third sub-pixel arranged along the second arrangement direction, and the first arrangement direction intersects with the second arrangement direction; the first sub-pixel group and the second sub-pixel group are distributed staggered in the second arrangement direction, and each of at least part of the first sub-pixels is surrounded by eight sub-pixels, which include the third sub-pixels and the second sub-pixels arranged alternately.

[0016] For example, the display substrate provided by at least one embodiment of the present disclosure, the first electrode of each of the sub-pixels includes an electrode body part, at least part of the electrode body part of the first electrode overlaps with the pixel opening corresponding to the sub-pixel, the support structure is surrounded by a plurality of electrode body parts of a plurality of sub-pixels, and a normal projection of the support structure on the substrate substrate does not overlap with a normal projection of the inorganic pattern on the substrate substrate.

[0017] For example, the display substrate provided by at least one embodiment of the present disclosure, the first electrode of each of the sub-pixels comprises an electrode main body part and an electrode connecting part connected to each other, at least part of the electrode main body part of the first electrode overlaps the pixel opening corresponding to the sub-pixel, the electrode connecting part of the sub-pixel is connected to the pixel driving circuit through the first connecting via, the support structure is surrounded by the electrode main body part of at least one of the sub-pixels and the electrode connecting part of at least another sub-pixel, and the orthographic projection of the support structure on the substrate is at least partially overlapped with the orthographic projection of the inorganic pattern on the substrate.

[0018] For example, the display substrate provided by at least one embodiment of the present disclosure, the minimum distance between the support structure and the defining opening is greater than 0 microns and less than 10 microns.

[0019] For example, the display substrate provided by at least one embodiment of the present disclosure, the minimum distance between the support structure and the defining opening is greater than 2 microns.

[0020] For example, the display substrate provided by at least one embodiment of the present disclosure, the cross section of the support structure intersected by a plane parallel to the substrate is circular, elliptical or polygonal, and the straight line distance between any two points in the edge of the cross section is not greater than 20 microns.

[0021] For example, the display substrate provided by at least one embodiment of the present disclosure, in the direction perpendicular to the substrate, the size of the support structure is not greater than 10 microns.

[0022] For example, the display substrate provided by at least one embodiment of the present disclosure, the organic layer comprises a second connecting via, the first connecting via and the second connecting via are in communication, the first electrode of the sub-pixel is connected to the pixel driving circuit through the first connecting via and the second connecting via, the orthographic projection of the first connecting via on the substrate falls into the orthographic projection of the second connecting via on the substrate, and the area of the orthographic projection of the first connecting via on the substrate is smaller than the area of the orthographic projection of the second connecting via on the substrate.

[0023] For example, the display substrate provided by at least one embodiment of the present disclosure, the straight line distance between any two points on the edge of the cross section of the first connecting via intersected by a plane parallel to the substrate is not greater than 6 microns; and / or the straight line distance between any two points on the edge of the cross section of the second connecting via intersected by another plane parallel to the substrate is not greater than 10 microns.

[0024] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0025] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0026] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0027] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0028] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0029] For example, the display substrate provided by at least one embodiment of the present disclosure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, the first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction.

[0030] For example, according to at least one embodiment of the present disclosure, the display substrate is provided, the maximum size of the cross section of the defined opening, which is cut by a plane parallel to the arrangement direction of the adjacent sub-pixels and perpendicular to the direction of the substrate, in the arrangement direction of the adjacent sub-pixels is not greater than 10 microns.

[0031] Another embodiment of the present disclosure provides a display panel comprising any of the above display substrates.

[0032] Still another embodiment of the present disclosure provides a display device comprising any of the above display substrates. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some of the embodiments of the present disclosure, and not limit the present disclosure.

[0034] FIG. 1 is a partial planar structure schematic diagram of a display substrate provided by at least one embodiment of the present disclosure.

[0035] FIG. 2 is a partial cross-sectional structure schematic diagram along the AA' line shown in FIG. 1.

[0036] FIG. 3 is a schematic diagram of a first electrode of a first sub-pixel and a corresponding defined structure in the display substrate shown in FIG. 1.

[0037] FIG. 4 is a schematic diagram of a first electrode of a second sub-pixel and a corresponding defined structure in the display substrate shown in FIG. 1.

[0038] FIG. 5 is a schematic diagram of a first electrode of a third sub-pixel and a corresponding defined structure in the display substrate shown in FIG. 1.

[0039] FIG. 6 is a partial structure schematic diagram corresponding to the first sub-pixel in the display substrate shown in FIG. 1.

[0040] FIG. 7 is a partial cross-sectional structure schematic diagram along the BB' line shown in FIG. 1.

[0041] FIG. 8 is a partial structure schematic diagram of an inorganic pattern in the display substrate shown in FIG. 1.

[0042] FIG. 9 is a partial planar structure schematic diagram of another display substrate provided by at least one embodiment of the present disclosure.

[0043] FIG. 10 is a planar structure schematic diagram of a first connection via hole and a second connection via hole provided by at least one embodiment of the present disclosure.

[0044] FIG. 11 is a partial structure schematic diagram of another display substrate provided by at least one embodiment of the present disclosure.

[0045] FIG. 12 is a schematic block diagram of a display device, according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present disclosure.

[0047] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning of the terms to a person of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second”, and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms “include”, “contain”, and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The features “parallel”, “vertical”, and “same” used in the embodiments of the present disclosure include the strict “parallel”, “vertical”, “same” and the “approximately parallel”, “approximately vertical”, “approximately same” with a certain error, which, considering the measurement and the error related to the measurement of a specific quantity (for example, the limitation of a measurement system), means within an acceptable deviation range for a specific value determined by a person of ordinary skill in the art. For example, “approximately” can mean within one or more standard deviations, or within 10% or 5% of the value. When the quantity of a component is not specifically indicated in the following embodiments of the present disclosure, it means that the component can be one or more, or can be understood as at least one. “At least one” means one or more, and “a plurality of” means at least two.

[0048] The tandem technology is to stack and connect the light-emitting layers of the sub-pixels, and to set a full-layer charge generation layer, such as a P-type doped charge generation layer P-CGL and an N-type doped charge generation layer N-CGL, between the stacked light-emitting layers. Compared with a display substrate without a tandem device, the two light-emitting layers in the tandem device are connected in series, so that a double light-emitting device is connected in series, the light-emitting current of the light-emitting device is greatly reduced under the same light-emitting intensity, the life of the organic light-emitting element is improved, and the power consumption is reduced.

[0049] In the research, the inventors of the present application found that: generally, the two light-emitting layers in the tandem device are in series, which puts forward higher requirements on materials and evaporation, etc.; and the conductivity of the charge generation layer in the tandem device is larger, the charge generation layers of the two adjacent sub-pixels are continuous film layers, there is a phenomenon of lateral migration of charges, which is easy to cause cross talk between adjacent sub-pixels, resulting in color deviation of the display substrate. In addition, when the limiting opening in the pixel limiting portion is used to expose the partial limiting structure between adjacent sub-pixels to form a partition structure for partitioning at least one film layer in the light-emitting functional layer, the partial edge of the limiting structure overlapping with the first electrode of the sub-pixel is covered by the pixel limiting portion, and the distance between the partial edge and the first electrode greatly affects the topography of the pixel limiting portion, the uniformity of the process, etc., for example, it can cause the thickness uniformity of the pixel limiting portion at different positions to be poor, and further cause the slope angle of the pixel limiting portion at the pixel opening to be uneven, affecting the light-emitting effect of the sub-pixel, and making the electrode flatness of the sub-pixel poor.

[0050] At least one embodiment of the present disclosure provides a display substrate, comprising: a substrate substrate, a plurality of sub-pixels, a pixel defining layer, an inorganic pattern, and an organic layer, the plurality of sub-pixels are located on the substrate substrate, the sub-pixel comprises a light-emitting functional layer, and a first electrode and a second electrode located on both sides of the light-emitting functional layer in a direction perpendicular to the substrate substrate, the first electrode is located between the light-emitting functional layer and the substrate substrate, and the sub-pixel further comprises a pixel driving circuit configured to drive the light-emitting functional layer of the sub-pixel to emit light; at least part of the pixel defining layer is located between the light-emitting functional layer and the first electrode, the pixel defining layer comprises a plurality of pixel openings and a pixel defining portion located between adjacent pixel openings, the pixel opening exposes at least part of the first electrode to define a light-emitting area of the sub-pixel; the inorganic pattern is located between the first electrode of the sub-pixel and the substrate substrate, the inorganic pattern comprises a plurality of inorganic structures, the inorganic structure comprises a defining main body portion and a defining connecting portion connected to each other, the defining connecting portion is located on one side of the defining main body portion, at least part of the defining main body portion overlaps with the light-emitting area of the sub-pixel, and the first electrode of the sub-pixel is connected with the pixel driving circuit through a first connecting via in the defining connecting portion; the organic layer is located on a side of the inorganic pattern close to the substrate substrate and in contact with the inorganic pattern, the organic layer comprises a plurality of organic structures, the orthographic projection of the inorganic structure on the substrate substrate at least partially overlaps with the orthographic projection of the organic structure on the substrate substrate, the inorganic structure comprises a protruding portion protruding relative to the edge of the organic structure, the light-emitting functional layer comprises a plurality of film layers, the pixel defining layer further comprises a plurality of defining openings, there is one defining opening between adjacent sub-pixels in at least part of the sub-pixels, the defining opening is configured to expose at least part of the protruding portion of the inorganic structure to isolate at least one layer in the light-emitting functional layer, and at least part of the edge of the defining main body portion of each inorganic structure in at least one inorganic structure is covered by the pixel defining portion, and the distance between the edge and the first electrode is equal at least for 50% of the length of the edge.

[0051] In the display substrate provided by the embodiment of the present disclosure, at least part of the protruding portion of the inorganic structure is exposed by the defining opening, so that at least one layer in the light-emitting functional layer can be isolated, and the risk of crosstalk between adjacent sub-pixels can be reduced; in addition, since the distance between the edge of each inorganic structure in at least one inorganic structure covered by the pixel defining portion and the first electrode is equal at least for 50% of the length of the edge, it is beneficial to make the pixel defining portion have a good topography while comprising a plurality of pixel openings and a plurality of defining openings, for example, the thickness of the pixel defining portion at different positions can be uniform, thereby making the slope angle of the pixel defining portion at the pixel opening uniform, so that the light-emitting effect of the sub-pixel is good, and at the same time, it is beneficial to ensure the flatness of the electrode of the sub-pixel and the uniformity of the manufacturing process.

[0052] The display substrate, the display panel and the display device provided by the embodiments of the present disclosure are described below with reference to the drawings.

[0053] FIG. 1 is a schematic diagram of a partial planar structure of a display substrate according to at least one embodiment of the present disclosure; FIG. 2 is a schematic diagram of a partial cross-sectional structure along the line AA' shown in FIG. 1; FIG. 3 is a schematic diagram of a first electrode of a first sub-pixel and corresponding limiting structures in the display substrate shown in FIG. 1; FIG. 4 is a schematic diagram of a first electrode of a second sub-pixel and corresponding limiting structures in the display substrate shown in FIG. 1; FIG. 5 is a schematic diagram of a first electrode of a third sub-pixel and corresponding limiting structures in the display substrate shown in FIG. 1; and FIG. 6 is a schematic diagram of a partial structure corresponding to the first sub-pixel in the display substrate shown in FIG. 1.

[0054] As shown in FIGS. 1 and 2, the display substrate includes a substrate 01, and a plurality of sub-pixels 10, a pixel limiting layer 200, an inorganic pattern 3000, and an organic layer 4000 on the substrate 01. The sub-pixel 10 includes a light-emitting functional layer 130, and the light-emitting functional layer 130 includes a plurality of film layers. For example, the plurality of sub-pixels 10 can be located in an area of the display substrate for displaying images, and the display substrate further includes a peripheral area surrounding the display area. The sub-pixel 10 further includes a first electrode 110 and a second electrode 120 located on both sides of the light-emitting functional layer 130 in a direction perpendicular to the substrate 01 (i.e., the direction Z shown in FIG. 2), and the first electrode 110 is located between the light-emitting functional layer 130 and the substrate 01. For example, the light-emitting functional layer 130 can include a light-emitting layer for emitting light and a charge generation layer 133, and the charge generation layer 133 has strong conductivity, which can make the light-emitting functional layer 130 have the advantages of long service life, low power consumption, and high brightness. For example, the light-emitting functional layer 130 can be a film layer in an organic light-emitting element. For example, the light-emitting functional layer 130 can include a first light-emitting layer (EML) 131, a charge generation layer (CGL) 133, and a second light-emitting layer (EML) 132 stacked, and the charge generation layer 133 is located between the first light-emitting layer 131 and the second light-emitting layer 132. For example, the sub-pixel 10 can include a tandem light-emitting element, such as a Tandem OLED, but embodiments of the present disclosure are not limited thereto. For example, the first electrode 110 can act as an anode, and the second electrode 120 can act as a cathode. For example, the cathode can be formed of a material with high conductivity and low work function, for example, the cathode can be made of a metal material. For example, the anode can be formed of a transparent conductive material with a high work function.

[0055] It should be noted that the light-emitting functional layer 130 shown in FIG. 2 can also include other film layers, such as a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), etc., which are not limited by embodiments of the present disclosure. For example, the hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer, the charge generation layer 133, and the second electrode 120 are common film layers of the plurality of sub-pixels 10, which can be referred to as common layers. In addition, the thickness of each film layer shown in FIG. 2 is only for clearly showing each film layer, and does not represent the actual size.

[0056] As shown in FIG. 2, the sub-pixel 10 further includes a pixel driving circuit 020 configured to drive the light-emitting functional layer 130 of the sub-pixel 10 to emit light. For example, the side of the first electrode 110 facing the substrate 01 is further provided with other structures 02, such as including the above-mentioned pixel driving circuit 020, signal lines, and various insulating layers, etc., which can include a passivation layer, a buffer layer, a gate insulating layer, an interlayer insulating layer, etc., which are not limited by embodiments of the present disclosure.

[0057] As shown in FIGS. 1 and 2, at least part of the pixel defining layer 200 is located between the light-emitting functional layer 130 and the first electrode 110, and includes a plurality of pixel openings 201 and a pixel defining portion 230 located between adjacent pixel openings 201, the pixel opening 201 exposes at least part of the first electrode 110 to define the light-emitting area 010 of the sub-pixel 10. For example, the first electrode 110 and the second electrode 120 located on both sides of the light-emitting functional layer 130 can drive the light-emitting functional layer 130 in the pixel opening 201 to emit light. The above-mentioned light-emitting area 010 can refer to the effective light-emitting area of the sub-pixel 10, and the shape of the light-emitting area 010 refers to a two-dimensional shape, for example, the shape of the light-emitting area 010 can be the same as the shape of the orthographic projection of the part of the first electrode 110 exposed by the pixel opening 201 on the substrate 01.

[0058] As shown in FIGS. 2-5, the inorganic pattern 3000 is located between the first electrode 110 of the sub-pixel 10 and the substrate 01. For example, the inorganic pattern 3000 is a one-piece structure. The inorganic pattern 3000 includes a plurality of inorganic structures 300, and each inorganic structure 300 includes a defined body portion 310 and a defined connecting portion 320 connected to each other. The defined connecting portion 320 is located on one side of the defined body portion 310, at least part of the defined body portion 310 overlaps with the light-emitting area 010 (as shown in FIG. 1) of the sub-pixel 10, and the first electrode 110 of the sub-pixel 10 is connected to the pixel driving circuit 020 through a first connecting via N1 in the defined connecting portion 320. For example, the pixel driving circuit 020 can include a plurality of transistors and at least one capacitor (not shown in the figure), and the first electrode 110 can be electrically connected to the pixel driving circuit 020 through the first connecting via N1. For example, the distance between the edge of the defined body portion 310 and the edge of the first electrode 110 is not less than the distance between the edge of the defined connecting portion 320 and the edge of the first electrode 110.

[0059] For example, as shown in FIGS. 2-5, the defined body portion 310 and the defined connecting portion 320 in each inorganic structure 300 are a one-piece structure. For example, the inorganic structure 300 corresponding to the sub-pixel 10 refers to the inorganic structure 300 overlapping with the first electrode 110 of the sub-pixel 10. For example, the orthographic projection of the light-emitting area 010 (as shown in FIG. 1) of the sub-pixel 10 on the substrate 01 falls within the orthographic projection of the defined body portion 310 of the inorganic structure 300 corresponding to the sub-pixel 10 on the substrate 01. For example, the light-emitting area 010 of the sub-pixel 10 and the defined connecting portion 320 in the inorganic structure 300 corresponding to the sub-pixel 10 are arranged in a spaced manner. For example, the plurality of inorganic structures 300 correspond one-to-one to the plurality of sub-pixels 10.

[0060] As shown in FIG. 2, the organic layer 4000 is located on the side of the inorganic pattern 3000 close to the substrate 01 and in contact with the inorganic pattern 3000, and the organic layer 4000 includes a plurality of organic structures 400. The orthographic projection of the inorganic structure 300 on the substrate 01 at least partially overlaps with the orthographic projection of the organic structure 400 on the substrate 01, and the inorganic structure 300 includes a protruding portion 350 protruding relative to the edge of the organic structure 400. For example, the organic layer 4000 further includes a flat portion between the plurality of organic structures 400 and the substrate 01, and the flat portion is connected to the plurality of organic structures 400, for example, the flat portion and the plurality of organic structures 400 are a one-piece structure. For example, the plurality of organic structures 400 of the organic layer 400 are formed in the process of manufacturing the inorganic structure 300. For example, in the process of patterning the inorganic pattern 3000 by etching solution, the part of the organic layer 400 overlapping with the inorganic pattern 3000 is etched together, and the inorganic structure 300 is formed to have the protruding portion 350 protruding relative to the edge of the organic structure 400.

[0061] As shown in FIG. 1 and FIG. 2, the pixel defining layer 200 further comprises a plurality of defining openings 202. There is one defining opening 202 between adjacent sub-pixels 10 in at least part of the sub-pixels 10. The defining opening 202 is configured to expose at least part of the protruding portion 350 of the inorganic structure 300 to partition at least one layer in the light-emitting functional layer 130. For example, the defining opening 202 is arranged apart from the pixel opening 201. For example, the defining opening 202 is located between adjacent sub-pixels 10. For example, the protruding portion 350 of the inorganic structure 300 surrounds the light-emitting region 010 of the sub-pixel 10. For example, a part of the protruding portion 350 of the inorganic structure 300 between adjacent sub-pixels 10 is exposed by the defining opening 202. The part of the protruding portion 350 of the inorganic structure 300 exposed by the defining opening 202 is configured to partition at least one layer in the light-emitting functional layer 130.

[0062] As shown in FIG. 1, at least part of the edge of the defining main portion 310 of each inorganic structure 300 in the at least one inorganic structure 300 is covered by the pixel defining portion 230, and the distance between at least 50% of the part of the edge along the length direction of the edge and the first electrode 110 is equal. For example, the above-mentioned distance can be the distance between the edges of the defining main portion 310 and the first electrode 110 close to each other. For example, the distance relationship between the edge of the defining main portion 310 (see FIG. 3) corresponding to the sub-pixel 10 and the edge of the electrode main portion 111 of the first electrode 110 satisfies the relationship. For example, the length direction of the edge of the inorganic structure 300 is the extension direction of the edge. For example, the extension direction can be a straight line direction, or a broken line direction. For example, the protruding portion 350 of the inorganic structure 300 corresponding to each sub-pixel 10 comprises a part not exposed by the defining opening 202, and the part of the protruding portion 350 is covered by the pixel defining portion 230, and the light-emitting functional layer 130 and the second electrode 120 are continuous at the part of the protruding portion 350. For example, the edge of the inorganic structure 300 corresponding to the sub-pixel 10 covered by the pixel defining portion 230 is continuous, or comprises a plurality of parts spaced from each other. For example, as shown in FIG. 3, the edge of the inorganic structure 300 corresponding to the sub-pixel 10 covered by the pixel defining portion 230 comprises the edge 331 and the edge 332, the distance between a part of the edge 331 in the length direction thereof and the first electrode 110 is equal to the distance between a part of the edge 332 in the length direction thereof, and the sum of the length of the part of the edge 331 and the length of the part of the edge 332 is not less than 50% of the sum of the length of the edge 331 and the length of the edge 332. For example, the extension direction of the edge of the inorganic structure 300 corresponding to the sub-pixel 10 covered by the pixel defining portion 230 can be a non-straight line direction, and the embodiments of the present disclosure do not limit this.

[0063] The display substrate provided by the embodiments of the present disclosure has the advantages that at least part of the protruding portion of the inorganic structure is exposed by the opening, so that at least one layer of the light-emitting functional layer can be partitioned, and the risk of crosstalk between adjacent sub-pixels can be reduced. In addition, since the distance between the edge of each inorganic structure covered by the pixel defining portion and the first electrode is equal along at least 50% of the length of the edge, the pixel defining portion can have a good profile while including multiple pixel openings and multiple opening defining portions, for example, the thickness of the pixel defining portion at different positions can be uniform, and the slope angle of the pixel defining portion at the pixel opening is uniform, so that the light-emitting effect of the sub-pixel is good, and the flatness of the electrode of the sub-pixel is ensured, and the uniformity of the manufacturing process is also ensured.

[0064] For example, as shown in FIG. 1, the plurality of sub-pixels 10 in the display substrate includes a plurality of first sub-pixels 101, a plurality of second sub-pixels 102, and a plurality of third sub-pixels 103. The plurality of sub-pixels 10 is arranged as a plurality of first sub-pixel groups 0010 and a plurality of second sub-pixel groups 0020 arranged alternately along a first arrangement direction X, the first sub-pixel group 0010 includes the first sub-pixel 101 and the second sub-pixel 102 arranged alternately along a second arrangement direction Y, and the second sub-pixel group 0020 includes the third sub-pixel 103 arranged along the second arrangement direction Y. For example, the light-emitting colors of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 are different from each other. For example, the first sub-pixel 101 can be a red sub-pixel emitting red light, the second sub-pixel 102 can be a blue sub-pixel emitting blue light, and the third sub-pixel 103 can be a green sub-pixel emitting green light, but the embodiments of the present disclosure are not limited thereto, and the light-emitting colors of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 can be interchanged. The first arrangement direction X and the second arrangement direction Y intersect and are both parallel to the substrate 01.

[0065] For example, as shown in FIG. 1, the first sub-pixel group 0010 and the second sub-pixel group 0020 are distributed staggered in the second arrangement direction Y, and each of at least part of the first sub-pixels 101 is surrounded by eight sub-pixels 10 including the third sub-pixel 103 and the second sub-pixel 102 arranged alternately. For example, the area of the light-emitting region 010 of the first sub-pixel 101 and the area of the light-emitting region 010 of the third sub-pixel 103 are both smaller than the area of the light-emitting region 010 of the second sub-pixel 102, and the area of the light-emitting region 010 of the third sub-pixel 103 is smaller than the area of the light-emitting region 010 of the first sub-pixel 101.

[0066] In some embodiments, referring to FIG. 1, the plurality of sub-pixels 10 includes at least two sub-pixels 10 of different colors, such as the first sub-pixel 101 and the second sub-pixel 102, but not limited thereto, the defined main body part 310 of the inorganic structure 300 overlapping with the first electrode 110 of the two sub-pixels 10 of different colors each includes a covered part covered by the pixel defining part 230, and the distance between the edge of each covered part and the corresponding first electrode 110 is substantially equal. For example, in the embodiments of the present disclosure, the distance between the edge of the inorganic structure 300 and the first electrode 110 can be the distance between the edges of the inorganic structure 300 and the first electrode 110 facing each other.

[0067] For example, referring to FIG. 4 and FIG. 6, the inorganic structure 300 corresponding to the first sub-pixel 101 includes a first covered part M, the inorganic structure 300 corresponding to the second sub-pixel 102 includes a second covered part N, the distance between the edge of the first covered part M and the first electrode 110 of the first sub-pixel 101 can be substantially equal to the distance between the edge of the second covered part N and the first electrode 110 of the second sub-pixel 102, for example, both equal to the same value. For example, the distance between the edge of the first covered part M and the first electrode 110 of the first sub-pixel 101 can be substantially constant, and the distance between the edge of the second covered part N and the first electrode 110 of the second sub-pixel 102 can be substantially constant. FIG. 4 and FIG. 6 only schematically show the first covered part M and the second covered part N, and the distance between the edge of the first covered part M and the first electrode 110 and the distance between the edge of the second covered part N and the first electrode 110 can be designed according to design requirements, for example, can be equal.

[0068] In this way, it is beneficial to keep the distance between the edge of the covered part of the inorganic structure corresponding to the sub-pixels of different colors and the first electrode substantially constant, thereby facilitating the consistency of the slope angle of the pixel opening of the sub-pixels of different colors, and further making the light emitting effect of the sub-pixels of different colors uniform and good, while facilitating the uniformity of the manufacturing process.

[0069] For example, referring to FIG. 6, the extension length of the two adjacent defined openings 202 in the circumference of the light emitting area of the first sub-pixel 101 (of course, not limited to the first sub-pixel) can not be equal. For example, the extension length of one of the two adjacent defined openings 202 can be substantially equal to the size of the edge of the light emitting area facing it, and the size of the other of the two adjacent defined openings 202 can be smaller than the size of the edge of the light emitting area facing it. In this way, while meeting the partitioning requirement, the impact of the size of the defined opening on the topography of the pixel defining part can be reduced.

[0070] For example, referring to FIG. 6, the extension lengths of the two defining openings 202 facing each other on the circumference of the light emitting region of the first sub-pixel 101 (of course, not limited to the first sub-pixel) are substantially equal, so that the defining openings 202 can have good symmetry, which is beneficial to reduce the impact on the topography of the pixel defining part and weaken the difference in light emitting angle caused thereby.

[0071] In some embodiments, referring to FIG. 1, the plurality of sub-pixels 10 includes at least two sub-pixels 10 of different colors, for example, the first sub-pixel 101 and the third sub-pixel 103, but not limited thereto, and the defining main body part 310 of the inorganic structure 300 overlapping with the first electrode 110 of the two sub-pixels 10 of different colors each includes an exposed part exposed by the defining opening 202, and the distance between the edge of the exposed part and the corresponding first electrode 110 is substantially equal.

[0072] For example, referring to FIGS. 5 and 6, the edge of the defining main body part 310 of the inorganic structure 300 corresponding to the first sub-pixel 101 is exposed by the defining opening 202, and the distance between the above four parts of the edge and the first electrode 110 of the first sub-pixel 101 is ar1, ar2, ar3 and ar4 respectively, and ar1=ar2=ar3=ar4. For example, referring to FIG. 3, the two opposite parts of the edge of the defining main body part 310 of the inorganic structure 300 corresponding to the third sub-pixel 103 are exposed by the defining opening 202 (see FIG. 1), and the distance between the above two parts and the first electrode 110 of the third sub-pixel 103 is ag2 and ag4 respectively, and ag2=ag4.

[0073] By making ar1=ar2=ar3=ar4=ag2=ag4, it is beneficial to make the manufacturing process of the plurality of inorganic structures corresponding to the sub-pixels of different colors consistent, and to make the light emitting effect of each sub-pixel uniform and good.

[0074] For example, as shown in FIGS. 1, 3 and 4, the inorganic pattern 3000 includes a plurality of inorganic structures 300, and the plurality of inorganic structures 300 includes a first inorganic structure 301 and a second inorganic structure 302 adjacent to each other. For example, the third sub-pixel 103 corresponds to the first inorganic structure 301, and the second sub-pixel 102 corresponds to the second inorganic structure 302, but not limited thereto. The area of the light emitting region 010 overlapping with the first inorganic structure 301 (for example, the area of the light emitting region 010 of the third sub-pixel 103) is smaller than the area of the light emitting region 010 overlapping with the second inorganic structure 302 (for example, the area of the light emitting region 010 of the second sub-pixel 102).

[0075] For example, as shown in FIG. 1 and FIG. 3, at least part of the edges (such as edge 331 and edge 332) of the first inorganic structure 301 defining the main body part 310 are covered by the pixel defining part 230, and the distance between the above-mentioned edges of the first inorganic structure 301 and the first electrode 110 is a first distance. For example, the distance between the edge 331 and the first electrode 110 is ag1, the distance between the edge 332 and the first electrode 110 is ag3, ag1 and ag3 are both the first distance, and ag1 = ag3. For example, as shown in FIG. 1 and FIG. 4, at least part of the edges of the second inorganic structure 302 defining the main body part 310 are covered by the pixel defining part 230, and the distance between the part of the edges of the second inorganic structure 302 and the first electrode 110 is a second distance. For example, at least 90% of the edges of the second inorganic structure 302 defining the main body part 310 around the light emitting area 010 of the second sub-pixel 102 are covered by the pixel defining part 230, and FIG. 4 schematically shows the distances (all being the second distance) between the edges of the second inorganic structure 302 defining the main body part 310 at different positions and covered by the pixel defining part 230 and the first electrode 110, i.e., ab1, ab2, ab3 and ab4, and ab1 = ab1 = ab3 = ab4.

[0076] For example, as shown in FIG. 1, FIG. 3 and FIG. 4, the above-mentioned first distance is not less than the above-mentioned second distance, for example, the first distance can be equal to the second distance. In this way, it is beneficial to make the topography of the pixel defining part at the pixel opening of the sub-pixel with different areas of light emitting area consistent, beneficial to make the light emitting effect of each sub-pixel less deviated, and beneficial to make the manufacturing process of the sub-pixel with different areas of light emitting area consistent.

[0077] For example, as shown in FIG. 1, FIG. 3 and FIG. 4, the first distance can be greater than the second distance. For example, compared with the sub-pixel with a larger area of light emitting area (such as the second sub-pixel), when part of the edges of the main body part of the inorganic structure corresponding to the sub-pixel with a smaller area of light emitting area is exposed by the limiting opening, the topography of the pixel defining part is greatly affected, for example, the thickness of the part between the pixel opening and the limiting opening can be small, the uniformity is poor, and the requirement for the slope angle at the pixel opening can not be met, so that the light emitting angle of the sub-pixel is affected. Therefore, by making the above-mentioned first distance not less than the above-mentioned second distance, it is beneficial to reduce the influence of the setting of the limiting opening on the light emitting angle of the sub-pixel with a smaller area of light emitting area, and can make the light emitting effect of the multiple sub-pixels with different areas of light emitting area more uniform and good.

[0078] For example, as shown in FIG. 1, FIG. 3 and FIG. 4, the first electrode 110 overlapped by the first inorganic structure 301 (e.g., the first electrode 110 of the third sub-pixel 103) and the first electrode 110 overlapped by the second inorganic structure 302 (e.g., the first electrode 110 of the second sub-pixel 102) have a defined opening 202, for example, the defined opening 202 circled by the dashed box P in FIG. 1, a part of the edge of the defined main body part 310 of the first inorganic structure 301 corresponding to the third sub-pixel 103 is exposed by the defined opening 202, and the distance between the defined opening 202 and the pixel opening 201 corresponding to the first inorganic structure 301 is not less than the distance between the defined opening 202 and the pixel opening 201 corresponding to the second inorganic structure 302. For example, the distance between the edge of the defined main body part 310 of the first inorganic structure 301 corresponding to the third sub-pixel 103 exposed by the defined opening 202 and the pixel opening 201 corresponding to the first inorganic structure 301 is W1, the distance between the edge of the defined main body part 310 of the second inorganic structure 302 corresponding to the second sub-pixel 102 exposed by the defined opening 202 and the pixel opening 201 corresponding to the second inorganic structure 302 is W2, and W1 is not less than W2.

[0079] For example, as shown in FIG. 1, taking the defined opening 202 in the dashed box P as an example, the orthographic projection of the defined opening 202 on the substrate substrate is a long strip, and the length of the defined opening 202 is greater than the size of the first electrode 110 of the third sub-pixel 103 in the length direction, so that the defined opening 202 is arranged near the pixel opening 201 corresponding to the third sub-pixel 103, which may have a greater impact on the topography of the pixel defining part 230 (see FIG. 2). For example, it may make the thickness of the pixel defining part 230 between the pixel opening 201 corresponding to the third sub-pixel 103 and the adjacent defined opening 202 smaller, so that the part of the pixel defining part 230 cannot form a good slope angle at the pixel opening 201 according to the design requirements, thereby affecting the light output effect of the third sub-pixel 103.

[0080] Therefore, by making the above W1 not less than W2, sufficient space can be provided between the pixel opening corresponding to the third sub-pixel and the defined opening between the third sub-pixel and the second sub-pixel, so as to facilitate the arrangement of the pixel defining part, so that the pixel defining part surrounding the light emitting area of the third sub-pixel has a good topography, for example, can maintain sufficient thickness and form a good slope angle, so as to improve the light output effect of the third sub-pixel.

[0081] For example, as shown in FIGS. 1-5, the display substrate includes a plurality of inorganic structures 300, and the plurality of inorganic structures 300 includes a third inorganic structure 303. For example, the first sub-pixel 101 corresponds to the third inorganic structure 303. The area of the light emitting region 010 of the sub-pixel 10 (i.e., the first sub-pixel 101) overlapping with the third inorganic structure 303 is greater than the area of the light emitting region 010 of the sub-pixel 10 (i.e., the third sub-pixel 103) overlapping with the first inorganic structure 301, and is less than the area of the light emitting region 010 of the sub-pixel 10 (i.e., the second sub-pixel 102) overlapping with the second inorganic structure 302. For example, at least part of the edge of the third inorganic structure 303 defining the main body portion 310 is exposed by the defined opening 202, and the distance between the part of the edge along at least 50% of its length and the first electrode 110 is equal.

[0082] For example, as shown in FIGS. 1, 5 and 6, four parts of the edge of the third inorganic structure 303 defining the main body portion 310 corresponding to the first sub-pixel 101 are exposed by the defined opening 202, and the distance between the four parts of the edge and the first electrode 110 of the first sub-pixel 101 is ar1, ar2, ar3 and ar4 respectively, and ar1 = ar2 = ar3 = ar4. For example, the distance between each of the four parts of the edge and the first electrode 110 can be constant.

[0083] In this way, the distance between the edge of the first sub-pixel exposed by the defined opening and the first electrode has good uniformity, and the pixel defining portion around the pixel opening of the first sub-pixel has good topography, which is conducive to ensuring good light output effect.

[0084] For example, referring to FIG. 2 and FIG. 3, the defined body part 310 of the inorganic structure 300 overlapped by the first electrode 110 of at least one sub-pixel 10 (for example, the third sub-pixel 103) includes a first edge 313 covered by the pixel defining part 230 and a second edge 323 exposed by the defined opening 202, and the distance between the first edge 313 and the first electrode 110 is less than the distance between the second edge 323 and the first electrode 110. For example, the first edge 313 can include two opposite parts, i.e., an edge 331 and an edge 332, for example, the distance ag1 between the edge 331 and the first electrode 110 can be equal to the distance ag3 between the edge 332 and the first electrode 110, but the present disclosure is not limited thereto. For example, the second edge 323 can include two opposite parts, i.e., an edge 333 and an edge 334, for example, the distance ag2 between the edge 333 and the first electrode 110 can be equal to the distance ag4 between the edge 334 and the first electrode 110, but the present disclosure is not limited thereto. For example, ag1 = ag3 < ag2 = ag4. For example, ag1 < ag3 < ag2 = ag4. For example, ag1 < ag3 < ag2 < ag4, but the present disclosure is not limited thereto. For example, the distance between the first edge 313 and the first electrode 110 and the distance between the second edge 323 and the second electrode 120 can both be an average distance.

[0085] In this way, the distance between the defined opening exposing part of the edge of the defined body part corresponding to the sub-pixel and the first electrode is large, and the distance between the pixel opening and the defined opening is large, which is beneficial to the part of the pixel defining part between the pixel opening and the defined opening having a good topography, so as to have a good light-out effect.

[0086] For example, as shown in FIG. 3, two part edges of the defined body part 310 of the first inorganic structure 301 corresponding to the third sub-pixel 103 (see FIG. 1) are covered by the pixel defining part. For example, the part edge between the above-mentioned two part edges is exposed by the defined opening 202 (see FIG. 1). For example, the above-mentioned two part edges can be the edge 331 and the edge 332 of the first edge 313, and the edge 331 and the edge 332 are opposite to each other. For example, the distance ag1 between the edge 331 and the first electrode 110 is equal to the distance ag3 between the edge 332 and the first electrode 110. In some embodiments, the two part edges can also be two edges adjacent to each other and arranged at intervals, and the embodiments of the present disclosure are not limited thereto.

[0087] In this way, the topography of the pixel defining part around the pixel opening corresponding to the sub-pixel is consistent, which is beneficial to the light-out effect of the sub-pixel being good.

[0088] For example, as shown in FIG. 1, the plurality of sub-pixels 10 are arranged as a plurality of sub-pixel rows R1 and a plurality of sub-pixel columns R2. For example, the arrangement direction of the plurality of sub-pixel rows R1 is a first arrangement direction X along a direction rotated 45 degrees clockwise, and the arrangement direction of the plurality of sub-pixel columns R2 is a second arrangement direction Y along a direction rotated 45 degrees clockwise. For example, a plurality of limiting openings 202 are arranged between adjacent two sub-pixel rows R1, and the distance between adjacent limiting openings 202 located between the adjacent two sub-pixel rows R1 is not greater than 40 microns, for example, can be 5-10 microns, 15-25 microns, 30-40 microns, or other values not greater than 40 microns, which are not listed one by one here. For example, a plurality of limiting openings 202 are arranged between adjacent two sub-pixel columns R2, and the distance between adjacent limiting openings 202 located between the adjacent two sub-pixel columns R2 is not greater than 40 microns, for example, can be 5-10 microns, 15-25 microns, 30-40 microns, or other values not greater than 40 microns, which are not listed one by one here.

[0089] In this way, it is beneficial to maintain a good distance between adjacent limiting openings, so that the plurality of limiting openings in the pixel limiting portion are spaced apart and uniformly distributed, and it is beneficial to maintain a good topography of each part of the pixel limiting portion, for example, the thickness of the pixel limiting portion can be uniform, and a good slope angle is obtained at each pixel opening and each limiting opening.

[0090] For example, as shown in FIG. 1, the limiting main body part 310 of the inorganic structure 300 corresponding to each sub-pixel 10 is at least partially covered by the pixel limiting portion 230, so as to ensure the electrical connection between the second electrodes 120 (see FIG. 2) of the plurality of sub-pixels 10, so that the second electrodes 120 have continuity. For example, the orthogonal projection of the limiting opening 202 on the substrate 01 is a strip shape, and the length of the strip shape is not greater than 50 microns. For example, the length of the above-mentioned strip shape is substantially equal to the length of the edge of the limiting opening 202 close to the first electrode 110 of the sub-pixel 10. For example, the length of the above-mentioned strip shape can be equal to the size of the limiting opening 202 in its extension direction. For example, the length of the above-mentioned strip shape can be 20-30 microns, 30-40 microns, 35-50 microns, or other values not greater than 50 microns, which are not listed one by one here, so as to reduce the influence on the topography of the pixel limiting portion while ensuring the good isolation capability of the protruding part 350 (see FIG. 2) exposed by the limiting opening 202.

[0091] For example, as shown in FIG. 2, in the arrangement direction of the adjacent sub-pixels 10 (for example, the third sub-pixel 103 and the second sub-pixel 102) (for example, the direction Q shown in FIG. 2), the maximum size of the cross section of the defining opening 202 in the direction Q, which is cut by a plane parallel to the arrangement direction of the adjacent sub-pixels 10 and perpendicular to the direction of the substrate 01, is not greater than 10 microns. For example, the orthogonal projection of the defining opening 202 on the substrate 01 is a strip, and the size of the above-mentioned cross section in the direction Q can be equal to the width of the strip. For example, the width of the above-mentioned strip is not greater than 10 microns, for example, can be 5-8 microns, 6-9 microns or 7-10 microns, so that the partial edge of the inorganic structure 300 can be exposed to have good isolation ability. For example, in the embodiment of the present disclosure, the arrangement direction of the adjacent sub-pixels 10 is parallel to the substrate 01.

[0092] FIG. 7 is a schematic diagram of a partial cross-sectional structure along the line BB' shown in FIG. 1; and FIG. 8 is a schematic diagram of a partial structure of an inorganic pattern in the display substrate shown in FIG. 1.

[0093] For example, as shown in FIG. 1 and FIG. 7, the display substrate further comprises at least one support structure 500, the support structure 500 is arranged in a direction parallel to the substrate 01 and spaced apart from the first electrode 110 of the sub-pixel 10, and the surface of the support structure 500 away from the substrate 01 is farther away from the substrate 01 than the surface of the pixel defining portion 230 away from the substrate 01. For example, the support structure 500 is configured to support a mask. For example, as shown in FIG. 7, the support structure 500 is located on the side of the pixel defining portion 230 away from the substrate 01. For example, the support structure 500 and the pixel defining portion 230 can adopt different materials. For example, the orthogonal projection of the support structure 500 on the substrate 01 does not overlap with the orthogonal projection of the defining opening 202 on the substrate 01. For example, the support structure 500 and the defining opening 202 are arranged in parallel to the substrate 01. Thus, the influence of the defining opening 202 on the supporting effect of the support structure 500 can be reduced, so as to facilitate the stable arrangement of the support structure 500, and the influence on the process and the production capacity is lower.

[0094] For example, as shown in FIG. 1, the first electrode 110 of each sub-pixel 10 includes an electrode body part 111 and an electrode connecting part 112. The electrode body part 111 is connected with the electrode connecting part 112, for example, the electrode body part 111 and the electrode connecting part 112 are in an integrated structure. As shown in FIG. 1 and FIG. 2, at least part of the electrode body part 111 of the first electrode 110 overlaps with the pixel opening 201 corresponding to the sub-pixel 10, and the electrode connecting part 112 is connected with the pixel driving circuit 020 through the first connecting via N1. For example, the orthogonal projection of the pixel opening 201 corresponding to the sub-pixel 10 on the substrate falls within the orthogonal projection of the electrode body part 111 of the first electrode 110 of the sub-pixel 10 on the substrate. For example, the support structure 500 can be located within the dashed box U1 shown in FIG. 8, but is not limited thereto. For example, the electrode connecting part 112 is located on one side of the electrode body part 111, and the orthogonal projection area of the electrode connecting part 112 on the substrate is smaller than the orthogonal projection area of the electrode body part 111 on the substrate. For example, referring to FIG. 1 and FIG. 3, the orthogonal projection of the electrode body part 111 corresponding to the sub-pixel 10 on the substrate falls within the orthogonal projection of the defined body part 310 on the substrate, and the orthogonal projection of the electrode connecting part 112 on the substrate falls within the orthogonal projection of the defined connecting part 320 on the substrate 01. In some embodiments, the electrode connecting part 112 can at least partially overlap with the defined body part 310 (see FIG. 3) corresponding to the sub-pixel 10.

[0095] For example, as shown in FIG. 1, the support structure 500 is surrounded by the electrode body parts 111 of the plurality of sub-pixels 10. For example, the support structure 500 is surrounded by the electrode body parts 111 of one first sub-pixel 101, one second sub-pixel 102, and two third sub-pixels 103. For example, the support structure 500 is located between the opposite corners of the inorganic structure 300 corresponding to the first sub-pixel 101 and the inorganic structure 300 corresponding to the second sub-pixel 102 adjacent in the first arrangement direction X, and is located between the opposite corners of the inorganic structure 300 corresponding to the two adjacent third sub-pixels 103 in the second arrangement direction Y. The orthogonal projection of the support structure 500 on the substrate does not overlap with the orthogonal projection of the inorganic pattern 3000 on the substrate. For example, the support structure 500 is spaced apart from the inorganic pattern 3000.

[0096] In this way, it is beneficial to maintain a suitable distance between the support structure and the inorganic pattern, so that the support structure has sufficient arrangement space, thereby making the support structure have good support capability.

[0097] FIG. 9 is a schematic diagram of a partial planar structure of another display substrate provided by at least one embodiment of the present disclosure.

[0098] For example, the display substrate shown in FIG. 9 differs from the display substrate shown in FIG. 1 in that the support structure 500 is different, and the remaining features can be referred to the related descriptions of the above embodiments, which will not be repeated here. For example, the support structure 500 is surrounded by the electrode main body part 111 of the electrode of at least one sub-pixel 10 and the electrode connecting part 112 of the electrode of at least another sub-pixel 10. For example, the support structure 500 is surrounded by four sub-pixels 10. For example, the support structure 500 is located between two third sub-pixels 103 adjacent in the first arrangement direction X and between the first sub-pixel 101 and the second sub-pixel 102 adjacent in the second arrangement direction Y. For example, the support structure 500 is located between the electrode main body part 111 of the first electrode 110 of the first sub-pixel 101 and the electrode connecting part 112 of the first electrode 110 of the second sub-pixel 102 adjacent in the second arrangement direction Y, and between the electrode main body part 111 of the first electrode 110 of one third sub-pixel 103 and the electrode connecting part 112 of the first electrode 110 of another third sub-pixel 103 adjacent in the first arrangement direction X. For example, the support structure 500 can be located within the dashed box U2 shown in FIG. 8, but is not limited thereto. For example, the orthographic projection of the support structure 500 on the substrate 01 at least partially overlaps the orthographic projection of the inorganic pattern 3000 on the substrate 01. For example, the support structure 500 is located on the side of the inorganic pattern 3000 away from the substrate 01 and in contact with the inorganic pattern 3000.

[0099] In this way, the surface of the support structure close to the substrate is flat, and the surface of the support structure away from the substrate is relatively far from the substrate, i.e., the support structure has a relatively high height, preventing the Tandem from being scratched by the mask during multiple evaporation processes, thereby providing the support structure with good support capability.

[0100] For example, referring to FIG. 1, the two limiting openings 202 located on opposite sides of the support structure 500 are rotationally symmetric about the center of the support structure 500. For example, the support structure 500 is provided with limiting openings 202 on opposite sides, and the two limiting openings 202 closest to the support structure 500 are rotationally symmetric about the center of the support structure 500. For example, the support structure 500 is surrounded by four limiting openings 202, and is located between two opposite limiting openings 202 of the four limiting openings 202 and between the other two opposite limiting openings 202. For example, the limiting opening 202 on one side of the support structure 500 coincides with another limiting opening 202 on the opposite side after being rotated by 180 degrees in a plane perpendicular to the substrate.

[0101] In this way, the partitioning effect of the opposite sides of the support structure is relatively symmetrical, so that the effect of the opening on the shape of the pixel defining portion is relatively symmetrical and uniform, and the support structure is stably arranged to have a uniform support effect.

[0102] For example, referring to FIG. 1, the minimum distance between the support structure 500 and the opening 202 is greater than 0 microns and less than 10 microns. For example, the minimum distance can be the minimum distance between the orthographic projection of the support structure 500 on the substrate and the orthographic projection of the opening 202 on the substrate. For example, the minimum distance can be 1-5 microns, 3-6 microns, 7-10 microns, or other values greater than 0 microns and less than 10 microns, which are not listed one by one. In this way, the effect of the opening 202 on the shape of the pixel defining portion 230 (see FIG. 2) is reduced, and the surface of the pixel defining portion 230 in contact with the support structure 500 is as flat as possible, so as to ensure the stable arrangement of the support structure 500 and reduce the risk of tilting or position deviation of the support structure 500.

[0103] For example, referring to FIG. 1, the minimum distance between the support structure 500 and the opening 202 is greater than 2 microns and less than 10 microns, for example, can be not less than 3 microns, 4 microns, 5 microns, 7 microns or 9 microns, or can be any value between 2 microns and 10 microns, which is not listed one by one. In this way, the effect of the opening 202 on the shape of the pixel defining portion 230 (see FIG. 2) can be effectively reduced, and the risk of tilting or position deviation of the support structure 500 is further reduced, so that the support structure 500 has a good support effect.

[0104] For example, referring to FIG. 1 and FIG. 2, the cross section of the support structure 500 taken parallel to the plane of the substrate 01 is circular, elliptical or polygonal, and the linear distance between any two points on the edge of the cross section is no more than 20 microns. For example, the linear distance is the length of the straight line segment between two points on the edge of the cross section of the support structure 500. For example, the support structure 500 can be cylindrical, and the shapes of the cross sections of the support structure 500 taken parallel to the planes of the substrate 01 can not be the same. For example, the cross section of the support structure 500 taken parallel to a plane of the substrate 01 is circular, so that the maximum linear distance between any two points on the edge of the cross section of the support structure 500 is the diameter of the circle. For example, when the cross section of the support structure 500 taken parallel to a plane of the substrate 01 is elliptical, the maximum linear distance between any two points on the edge of the cross section of the support structure 500 is equal to the size of the major axis of the ellipse. Embodiments of the present disclosure do not limit the shape of the cross section of the support structure 500, which can also be polygonal or other shapes.

[0105] For example, as shown in FIG. 7, the size of the support structure 500 in the direction perpendicular to the substrate 01, i.e. in the direction Z, is no more than 10 microns. For example, in order to make the support structure 500 have a stronger supporting force on the mask, the size of the support structure 500 in the direction Z can be made as large as possible, for example, it can be 5-10 microns, 6-8 microns or 8-10 microns, and embodiments of the present disclosure do not limit this.

[0106] FIG. 10 is a schematic diagram of a planar structure of a first connection via and a second connection via provided by at least one embodiment of the present disclosure.

[0107] For example, as shown in FIG. 1 and FIG. 10, the organic layer 4000 includes a second connection via N2, the first connection via N1 communicates with the second connection via N2, and the first electrode 110 of the sub-pixel 10 is connected with the pixel driving circuit 020 through the first connection via N1 and the second connection via N2. For example, the orthographic projection of the first connection via N1 on the substrate substrate 01 falls in the orthographic projection of the second connection via N2 on the substrate substrate 01, and the area of the orthographic projection of the first connection via N1 on the substrate substrate 01 is smaller than the area of the orthographic projection of the second connection via N2 on the substrate substrate 01. For example, the first connection via N1 and the second connection via N2 constitute a nested via. For example, the edge of the inorganic structure 300 at the first connection via N1 protrudes from the inner wall of the second connection via N2. For example, the orthographic projection of the part of the first connection via N1 in the second connection via N2 on the substrate substrate 01 is a closed ring. For example, the shape of the above-mentioned cross section of the first connection via N1 and the shape of the above-mentioned cross section of the second connection via N2 can be different, and the embodiments of the present disclosure do not limit the cross-sectional shape of the first connection via N1 and the second connection via N2.

[0108] In this way, the risk of the first electrode being broken in the first connection via or the second connection via can be effectively reduced, thereby facilitating the connection effect between the first electrode and the pixel driving circuit.

[0109] For example, as shown in FIG. 1 and FIG. 10, the straight line distance between any two points on the edge of the cross section of the first connection via N1 cut by a plane parallel to the substrate substrate 01 (such as b and b' shown in FIG. 10) is not greater than 6 microns, for example, it can be 3 microns, 4 microns, 5 microns or other values not greater than 6 microns, which are not listed one by one here. For example, the straight line distance between any two points on the edge of the cross section of the second connection via N2 cut by another plane parallel to the substrate substrate 01 (such as c and c' shown in FIG. 10) is not greater than 10 microns, for example, it can be 6 microns, 7 microns, 8 microns or other values not greater than 10 microns, which are not listed one by one here. For example, the inner diameter of the first connection via N1 is smaller than the inner diameter of the second connection via N2.

[0110] By making the first connection via and the second connection via meet the above size requirements, the electrode can have good flatness while effectively connecting the first electrode and the pixel driving circuit and reducing the risk of the first electrode being broken, thereby ensuring good light output effect.

[0111] FIG. 11 is a schematic diagram of a partial structure of another display substrate provided by at least one embodiment of the present disclosure.

[0112] For example, the arrangement of the plurality of sub-pixels in the display substrate shown in FIG. 11 is different from that in the display substrate shown in FIG. 1, and the structures such as the substrate, the pixel defining part, and the light emitting element in the display substrate shown in FIG. 11 can refer to the description about FIG. 1 in the above embodiment, which will not be repeated here.

[0113] For example, as shown in FIG. 11, the plurality of sub-pixels 10 includes a plurality of first sub-pixels 101, a plurality of second sub-pixels 102, and a plurality of third sub-pixels 103, and the first sub-pixels 101, the second sub-pixels 102, and the third sub-pixels 103 constitute a repeating unit. For the sake of clarity, only one repeating unit is shown in FIG. 11, and the number of repeating units is not limited in the embodiments of the present disclosure. For example, the first sub-pixel 101 and the second sub-pixel 102 in the repeating unit are arranged in sequence in the first arrangement direction X, and the first sub-pixel 101 and the second sub-pixel 102 are located on one side of the third sub-pixel 103 in the second arrangement direction Y. For example, one of the first sub-pixel 101 and the second sub-pixel 102 can be a red sub-pixel emitting red light, and the other can be a green sub-pixel emitting green light, and the third sub-pixel 103 can be a blue sub-pixel emitting blue light. For example, the light emitting colors of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 can be interchanged. For example, the area of the light emitting area of the first sub-pixel 101 is smaller than that of the second sub-pixel 102, and the area of the light emitting area of the second sub-pixel 102 is smaller than that of the third sub-pixel 103. Of course, the embodiments of the present disclosure are not limited thereto, and the area of the light emitting area of each sub-pixel can be set according to product requirements.

[0114] For example, as shown in FIG. 11, one limiting opening 202 is provided between any two of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 to achieve good isolation effect. For example, referring to FIGS. 2 and 11, at least part of the edge of the limiting main part 310 of the inorganic structure 300 overlapping with the first electrode 110 of any one of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 is exposed by the limiting opening 202, and the orthographic projection of the at least one limiting opening 202 on the substrate 01 is in the shape of “L”. For example, the orthographic projection of the light emitting area 010 of each sub-pixel 10 in the repeating unit on the substrate is in the shape of a rectangle. For example, the at least one limiting opening 202 surrounds the corner between the adjacent two edges of the light emitting area 010 of the sub-pixel 10. For example, the two corners of the light emitting area 010 of the first sub-pixel 101 opposite to each other are respectively surrounded by the limiting opening 202.

[0115] In this way, the part of the limiting main part of the inorganic structure corresponding to the adjacent two edges of the light emitting area is exposed through one limiting opening to form an isolation structure, thereby simplifying the manufacturing process while ensuring good isolation effect.

[0116] For example, as shown in FIG. 11, in the first arrangement direction X, opposite sides of the light emitting region 010 of the third sub-pixel 103 are provided with two limiting openings 202, and the two limiting openings 202 are symmetrical with respect to the center plane P located between the two and perpendicular to the substrate 01. For example, at least part of the third sub-pixel 103 is located between the first sub-pixel 101 and the second sub-pixel 102. For example, the limiting main body 310 of the inorganic structure 300 corresponding to the third sub-pixel 103 is symmetrical with respect to the center plane P. Thus, the partition structure of the third sub-pixel 103 located on both sides of the center plane P can be symmetrical, which is beneficial to making the partition effect symmetrical, and further making the topography of the pixel limiting part located on both sides of the center plane P symmetrical, which is beneficial to making the light emitting effect of the third sub-pixel 103 uniform and good.

[0117] For example, referring to FIG. 11, the limiting main body 310 corresponding to at least one of the first sub-pixel 101 and the second sub-pixel 102 in the repeating unit includes a protruding end 1021 with respect to the third sub-pixel 103 in the first arrangement direction X. For example, the protruding end 1021 can be a part of the first sub-pixel 101 or the second sub-pixel 102 that exceeds the third sub-pixel 103 in the first arrangement direction X. For example, in the first arrangement direction X, the support structure 500 is arranged at an interval with the third sub-pixel 103. For example, the support structure 500 and the third sub-pixel 103 can be located in the same column. For example, in the second arrangement direction Y, the support structure 500 and the third sub-pixel 103 are located on the same side of the first sub-pixel 101 and the second sub-pixel 102, and the protruding end 1021 overlaps at least part of the support structure 500 in the second arrangement direction Y. For example, in the second arrangement direction Y, the size of the support structure 500 is substantially the same as the size of the light emitting region 010 of the third sub-pixel 103. For example, in the first arrangement direction X, the distance between the edges of the first sub-pixel 101 and the second sub-pixel 102 away from each other is not less than the difference between the size of the third sub-pixel 103 and the distance between the support structure 500 and the third sub-pixel 103. For example, the edge of the sub-pixel 10 can be part of the first electrode 110 of the sub-pixel 10. For example, in the first arrangement direction X, the size of the sub-pixel 10 can be the size of the first electrode 110 thereof, but is not limited thereto.

[0118] Thus, the layout space of the side of the protruding end of the second sub-pixel close to the third sub-pixel and the side of the third sub-pixel close to the protruding end can be reasonably utilized, and the support structure can be stably arranged while ensuring the partition effect, thereby having a good mask support effect.

[0119] Another embodiment of this disclosure provides a display panel that includes any of the display substrates described above. Therefore, the technical effects of the aforementioned display substrates can also be reflected in this display panel, and will not be elaborated further here. For example, the display panel may further include an Enhancement Efficiency Structure (EES) located on the display substrate (e.g., on its encapsulation layer) to enhance light extraction efficiency. For example, the display panel may further include a color filter, which may be located on the side of the EES away from the display substrate, but is not limited thereto; by providing a color filter, the color intensity of light can be enhanced. For example, the display panel may also have other film layers, which are not limited in the embodiments of this disclosure.

[0120] Figure 12 is a schematic block diagram of a display device provided in at least one embodiment of the present disclosure.

[0121] As shown in Figure 12, another embodiment of this disclosure provides a display device, which includes any of the above-described display substrates. Therefore, the technical effects of the aforementioned display substrates can also be reflected in this display device, and will not be elaborated further here.

[0122] For example, the display device also includes a cover plate located on the light-emitting side of the display substrate.

[0123] 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.

[0124] The following points need to be explained:

[0125] (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.

[0126] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0127] 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

A display substrate comprises: a substrate substrate; a plurality of sub-pixels on the substrate substrate, the sub-pixel comprising a light-emitting functional layer, and a first electrode and a second electrode located on both sides of the light-emitting functional layer in a direction perpendicular to the substrate substrate, the first electrode being located between the light-emitting functional layer and the substrate substrate, the sub-pixel further comprising a pixel driving circuit configured to drive the light-emitting functional layer of the sub-pixel to emit light; a pixel defining layer, at least part of the pixel defining layer being located between the light-emitting functional layer and the first electrode, the pixel defining layer comprising a plurality of pixel openings and a pixel defining portion located between adjacent pixel openings, the pixel opening exposing at least part of the first electrode to define a light-emitting area of the sub-pixel; an inorganic pattern located between the first electrode of the sub-pixel and the substrate substrate, the inorganic pattern comprising a plurality of inorganic structures, the inorganic structure comprising a defined main portion and a defined connecting portion connected to each other, the defined connecting portion being located on one side of the defined main portion, at least part of the defined main portion overlapping the light-emitting area of the sub-pixel, the first electrode of the sub-pixel being connected to the pixel driving circuit through a first connecting via in the defined connecting portion; an organic layer located on a side of the inorganic pattern close to the substrate substrate and in contact with the inorganic pattern, the organic layer comprising a plurality of organic structures, a normal projection of the inorganic structure on the substrate substrate at least partially overlapping a normal projection of the organic structure on the substrate substrate, the inorganic structure comprising a protruding portion protruding relative to an edge of the organic structure, wherein the light-emitting functional layer comprises a plurality of film layers, the pixel defining layer further comprises a plurality of defined openings, there is one defined opening between adjacent sub-pixels in at least part of the sub-pixels, the defined opening being configured to expose at least part of the protruding portion of the inorganic structure to isolate at least one layer in the light-emitting functional layer, at least part of an edge of the defined main portion of each of the inorganic structures in the at least one inorganic structure is covered by the pixel defining portion, and the distance between the at least part of the edge and an edge of the first electrode is equal along at least 50% of the length of the at least part of the edge. The display substrate according to claim 1, wherein The plurality of sub-pixels comprises at least two sub-pixels of different colors, the defined main portion of the inorganic structure overlapping the first electrode of the sub-pixels of the at least two different colors each comprises a covered portion covered by the pixel defining portion, and the distance between the edge of each covered portion and the corresponding first electrode is approximately equal. The display substrate according to claim 1, wherein The plurality of sub-pixels comprises at least two sub-pixels of different colors, the defined main portion of the inorganic structure overlapping the first electrode of the sub-pixels of the at least two different colors each comprises an exposed portion exposed by the defined opening, and the distance between the edge of each exposed portion and the corresponding first electrode is approximately equal. The display substrate according to any one of claims 1-3, wherein The first electrode of the at least one sub-pixel overlaps with the defined body portion of the inorganic structure, and the defined body portion of the inorganic structure includes a first edge covered by the pixel defining portion and a second edge exposed by the defined opening, a distance between the first edge and the first electrode is less than a distance between the second edge and the first electrode. The display substrate according to any one of claims 1-4, wherein The plurality of inorganic structures includes a first inorganic structure, two portions of an edge of the defined body portion of the first inorganic structure spaced apart from each other are covered by the pixel defining portion, and distances between the two portions of the edge and the first electrode are substantially equal. The display substrate according to claim 1, wherein The plurality of inorganic structures includes a first inorganic structure and a second inorganic structure adjacent to each other, an area of the light emitting region of the sub-pixel overlapping with the first inorganic structure is less than an area of the light emitting region of the sub-pixel overlapping with the second inorganic structure, At least a portion of an edge of the defined body portion of the first inorganic structure is covered by the pixel defining portion, and a distance between the portion of the edge of the first inorganic structure and the first electrode is a first distance, At least a portion of an edge of the defined body portion of the second inorganic structure is covered by the pixel defining portion, and a distance between the portion of the edge of the second inorganic structure and the first electrode is a second distance, the first distance is not less than the second distance. The display substrate according to claim 6, wherein The first distance is greater than the second distance. The display substrate according to claim 6 or 7, wherein The first electrode overlapping with the first inorganic structure and the first electrode overlapping with the second inorganic structure have the defined opening, a portion of the edge of the defined body portion of the first inorganic structure is exposed by the defined opening, and a distance between the defined opening and a pixel opening corresponding to the first inorganic structure is not less than a distance between the defined opening and a pixel opening corresponding to the second inorganic structure. The display substrate according to any one of claims 6-8, wherein The plurality of inorganic structures includes a third inorganic structure, an area of the light emitting region of the sub-pixel overlapping with the third inorganic structure is greater than an area of the light emitting region of the sub-pixel overlapping with the first inorganic structure and less than an area of the light emitting region of the sub-pixel overlapping with the second inorganic structure, At least a portion of an edge of the defined body portion of the third inorganic structure is exposed by the defined opening, and a distance between the portion of the edge and the first electrode is equal along at least 50% of a length of the portion of the edge. The display substrate according to any one of claims 1-9, further comprising: At least one support structure, the support structure is spaced apart from the first electrode of the sub-pixel in a direction parallel to the substrate, a surface of the support structure away from the substrate is farther away from the substrate than at least a portion of a surface of the pixel defining portion away from the substrate, A normal projection of the support structure on the substrate does not overlap with a normal projection of the defined opening on the substrate. The display substrate according to claim 10, wherein The plurality of sub-pixels comprises a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the plurality of sub-pixels are arranged as a plurality of first sub-pixel groups and a plurality of second sub-pixel groups arranged alternately along a first arrangement direction, the first sub-pixel group comprises the first sub-pixel and the second sub-pixel arranged alternately along a second arrangement direction, the second sub-pixel group comprises the third sub-pixel arranged along the second arrangement direction, and the first arrangement direction intersects the second arrangement direction; The first sub-pixel group and the second sub-pixel group are distributed staggeredly in the second arrangement direction, and each of at least part of the first sub-pixels is surrounded by eight sub-pixels, the eight sub-pixels comprise the third sub-pixel and the second sub-pixel arranged alternately. The display substrate according to claim 11, wherein The first electrode of each of the sub-pixels comprises an electrode main body part, at least part of the electrode main body part of the first electrode overlaps the pixel opening corresponding to the sub-pixel, The support structure is surrounded by a plurality of electrode main body parts of a plurality of sub-pixels, and a normal projection of the support structure on the substrate substrate does not overlap a normal projection of the inorganic pattern on the substrate substrate. The display substrate according to claim 11, wherein The first electrode of each of the sub-pixels comprises an electrode main body part and an electrode connection part connected to each other, at least part of the electrode main body part of the first electrode overlaps the pixel opening corresponding to the sub-pixel, and the electrode connection part of the sub-pixel is connected to the pixel driving circuit through the first connection via, The support structure is surrounded by the electrode main body part of at least one sub-pixel and the electrode connection part of at least another sub-pixel, and a normal projection of the support structure on the substrate substrate at least partially overlaps a normal projection of the inorganic pattern on the substrate substrate. The display substrate according to any one of claims 10-13, wherein The minimum distance between the support structure and the defined opening is greater than 0 microns and less than 10 microns. The display substrate according to any one of claims 10-13, wherein The minimum distance between the support structure and the defined opening is greater than 2 microns. The display substrate according to any one of claims 10-13, wherein The cross section of the support structure intersected by a plane parallel to the substrate substrate is circular, elliptical or polygonal, and the straight line distance between any two points in the edge of the cross section is not greater than 20 microns. The display substrate according to any one of claims 10-13, wherein In the direction perpendicular to the substrate substrate, the size of the support structure is not greater than 10 microns. The display substrate according to any one of claims 10-13, wherein The organic layer comprises a second connection via, the first connection via and the second connection via are in communication, the first electrode of the sub-pixel is connected to the pixel driving circuit through the first connection via and the second connection via, The normal projection of the first connection via on the substrate substrate falls into the normal projection of the second connection via on the substrate substrate, and the area of the normal projection of the first connection via on the substrate substrate is smaller than the area of the normal projection of the second connection via on the substrate substrate. The display substrate according to claim 18, wherein The straight line distance between any two points on the edge of the cross section of the first connection via intersected by a plane parallel to the substrate substrate is not greater than 6 microns; and / or The straight line distance between any two points on the edge of the cross section of the second connection via intersected by another plane parallel to the substrate substrate is not greater than 6 microns. A straight line distance between any two points on the edge is not greater than 10 micrometers. The display substrate according to claim 10, wherein The plurality of sub-pixels comprises a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, the first sub-pixels, the second sub-pixels, and the third sub-pixels constitute a repeating unit, The first sub-pixels and the second sub-pixels in the repeating unit are arranged in a first arrangement direction in sequence, and the first sub-pixels and the second sub-pixels are located on one side of the third sub-pixels in a second arrangement direction, the first arrangement direction intersects the second arrangement direction. The display substrate according to claim 20, wherein At least part of the edge of the defined main part of the inorganic structure overlapping the first electrode of any one of the first sub-pixels, the second sub-pixels, and the third sub-pixels is exposed by the defined opening, and a normal projection of at least one defined opening on the substrate substrate is in an "L" shape. The display substrate according to claim 20 or 21, wherein In the first arrangement direction, two defined openings are arranged on opposite sides of the light-emitting area of the third sub-pixel, and the two defined openings are symmetrically distributed with respect to the center between them and perpendicular to the substrate substrate. The display substrate according to claim 20 or 21, wherein The support structure and the third sub-pixel are arranged in the first arrangement direction, and the support structure and the third sub-pixel are located on the same side of the first sub-pixel and the second sub-pixel in the second arrangement direction, At least one of the first sub-pixel and the second sub-pixel in the repeating unit corresponds to the defined main part, which includes a convex end with respect to the third sub-pixel in the first arrangement direction, and the convex end at least partially overlaps the support structure in the second arrangement direction. The display substrate according to any one of claims 1-10, wherein The plurality of sub-pixels are arranged as a plurality of sub-pixel rows and a plurality of sub-pixel columns, In a direction parallel to the substrate substrate, the distance between adjacent defined openings between two adjacent sub-pixel rows is not greater than 40 micrometers, and the distance between adjacent defined openings between two adjacent sub-pixel columns is not greater than 40 micrometers. The display substrate according to any one of claims 1-10, wherein At least part of the edge of the defined main part of each inorganic structure is covered by the pixel defining part, and the size of the defined opening in the extension direction thereof is not greater than 50 micrometers. The display substrate according to any one of claims 1-10, wherein The maximum size of the cross section of the defined opening cut by a plane parallel to the arrangement direction of adjacent sub-pixels and perpendicular to the substrate substrate in the arrangement direction of the adjacent sub-pixels is not greater than 10 micrometers. A display panel comprising the display substrate of any one of claims 1-26. A display device comprising the display substrate of any one of claims 1-26.

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