Display substrate and display apparatus

Abstract

Provided in at least one embodiment of the present disclosure are a display substrate and a display apparatus. The display substrate comprises: a base substrate; a pixel definition layer, which is located on the base substrate and comprises a plurality of pixel openings and pixel spacing portions that space the plurality of pixel openings apart; a plurality of sub-pixels, which are located on the base substrate and correspond to the plurality of pixel openings on a one-to-one basis, wherein each sub-pixel comprises a light-emitting element, each light-emitting element comprises a light-emitting layer and a plurality of first electrodes spaced apart from each other, and each first electrode corresponds to a plurality of sub-pixels; and the orthographic projections, on the base substrate, of a plurality of adjacent light-emitting layers emitting light of the same color are located within the orthographic projection of the same first electrode on the base substrate, the orthographic projections of the light-emitting layers on a plane parallel to a main surface of the base substrate are elongated, first edges of the light-emitting layers extend in a first direction, and second edges intersecting with the first edges extend in a second direction. The display substrate can solve the problems of blue shift at viewing angles and severe motion blur.

Description

Display substrate and display device Technical Field

[0001] Embodiments of this disclosure relate to a display substrate and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) displays are the next generation of displays following liquid crystal displays (LCDs). OLEDs offer advantages such as self-illumination, wide viewing angles (over 175°), short response times (1μs), high luminous efficiency, low operating voltage, wide color gamut, and flexibility / foldability. OLED display panels boast high luminous efficiency, low driving voltage, fast response speed, rich color display, ultra-thin and portable design, and wide viewing angles, meeting consumer demands for modern display technology and becoming a key focus in the flat panel display field. OLED-based displays in mobile phones and other products have been widely adopted in the market, with positive customer feedback. Currently, researchers are exploring new applications for OLEDs, with automotive OLED products becoming star products in the automotive industry, signifying the technological advancements in the automotive sector. Summary of the Invention

[0003] At least one embodiment of this disclosure provides a display substrate and a display device. The display substrate includes: a substrate; a pixel defining layer located on the substrate, including a plurality of pixel openings and pixel spacing portions that space the plurality of pixel openings; a plurality of sub-pixels located on the substrate and corresponding one-to-one with the plurality of pixel openings, wherein each sub-pixel includes a light-emitting element, the light-emitting element includes a light-emitting layer and a plurality of mutually spaced first electrodes, each first electrode corresponding to a plurality of sub-pixels; the orthographic projections of a plurality of adjacent light-emitting layers emitting the same color of light on the substrate are located within the orthographic projections of the same first electrode on the substrate, and the orthographic projection of the light-emitting layer on a plane parallel to the main surface of the substrate is elongated, the first side of the light-emitting layer extends along a first direction, and the second side intersecting the first side extends along a second direction. The embodiments of this disclosure divide the light-emitting layers corresponding to the sub-pixels emitting the same color of light into a plurality of light-emitting layers with smaller light-emitting areas, and optimize the ratio of the first electrodes to avoid the problems of rapid attenuation of brightness at small viewing angles and absorption of brightness at large viewing angles, resulting in blue tint and severe image ghosting.

[0004] At least one embodiment of this disclosure provides a display substrate, the display substrate comprising: a substrate; a pixel defining layer located on the substrate, including a plurality of pixel openings and pixel spacing portions separating the plurality of pixel openings; a plurality of sub-pixels located on the substrate, corresponding one-to-one with the plurality of pixel openings, wherein each sub-pixel includes a light-emitting element, the light-emitting element including a light-emitting layer and a plurality of mutually spaced first electrodes, each first electrode corresponding to a plurality of sub-pixels; the orthographic projections of a plurality of adjacent light-emitting layers emitting light of the same color on the substrate are located within the orthographic projection of the same first electrode on the substrate, and the orthographic projection of the light-emitting layer on a plane parallel to the main surface of the substrate is elongated, a first side of the light-emitting layer extends along a first direction, and a second side intersecting the first side extends along a second direction.

[0005] For example, in a display substrate provided in at least one embodiment of this disclosure, the length of the first side of the light-emitting layer in the first direction is equal to or approximately equal to the length of the corresponding first electrode in the first direction.

[0006] For example, in a display substrate provided in at least one embodiment of this disclosure, the sum of the lengths of the first sides of the plurality of light-emitting layers arranged in the first direction is equal to or approximately equal to the length of the corresponding first electrode in the first direction.

[0007] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projections of three adjacent light-emitting layers emitting the same color of light on the substrate are located within the orthographic projection of the same first electrode on the substrate. The width of each light-emitting layer in the second direction is a first width a, the spacing between adjacent light-emitting layers is a first distance b, the width d of the first electrode in the second direction is greater than 3a+2b, and the distance between the edge of the first electrode and the edge of the pixel defining layer is greater than or equal to 2 micrometers.

[0008] For example, in at least one embodiment of the present disclosure, the display substrate further includes a light control structure disposed on the light-emitting element, wherein the light control structure includes a first black matrix layer, a first transparent adhesive layer, a second black matrix layer and a second transparent adhesive layer stacked together, and the orthographic projections of the first black matrix layer and the second black matrix layer on the substrate and the orthographic projections of the light-emitting layer of the light-emitting element on the substrate do not overlap.

[0009] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projections of the first black matrix layer and the second black matrix layer on the substrate are both located within the orthographic projection of the pixel spacing portion on the substrate.

[0010] For example, in a display substrate provided in at least one embodiment of this disclosure, the second black matrix layer is on the side of the first black matrix layer away from the substrate, and the first black matrix layer includes a first cutout area, the second black matrix layer includes a second cutout area, the orthographic projection of the first cutout area on the substrate and the orthographic projection of the second cutout area on the substrate overlap, and both expose the light-emitting layer of the corresponding light-emitting element.

[0011] For example, in a display substrate provided in at least one embodiment of this disclosure, the area of ​​the orthographic projection of the first cutout region on the substrate is less than or equal to the area of ​​the orthographic projection of the second cutout region on the substrate, and the orthographic projection of the first cutout region on the substrate is located within the orthographic projection of the second cutout region on the substrate, and the orthographic projection of the light-emitting element on the substrate is located within the orthographic projection of the first cutout region on the substrate.

[0012] For example, in a display substrate provided in at least one embodiment of this disclosure, the area of ​​the orthogonal projection of the pixel opening on the substrate is smaller than the area of ​​the orthogonal projection of the first hollow region on the substrate, and smaller than the area of ​​the orthogonal projection of the second hollow region on the substrate; the orthogonal projection of the pixel opening on the substrate is located within the orthogonal projection of the first hollow region on the substrate, and is located within the orthogonal projection of the second hollow region on the substrate.

[0013] For example, in the display substrate provided in at least one embodiment of this disclosure, in the direction of the sub-pixel arrangement, the pixel opening and the corresponding first hollow area each have a first side and a second side. On the first side, there is a first gap between the edge of the pixel opening and the edge of the corresponding first hollow area; on the second side, there is a second gap between the edge of the pixel opening and the edge of the corresponding first hollow area, and the first gap and the second gap are equal.

[0014] For example, at least one embodiment of the display substrate provided in this disclosure further includes an encapsulation structure disposed between the light-emitting element and the light control structure, wherein the encapsulation structure includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer stacked together.

[0015] For example, in a display substrate provided in at least one embodiment of this disclosure, the thickness of the organic encapsulation layer is greater than 0 and less than or equal to 10 micrometers, and the thickness of the first transparent adhesive layer is greater than or equal to 8 micrometers and less than or equal to 30 micrometers.

[0016] For example, in a display substrate provided in at least one embodiment of this disclosure, a first buffer layer, a touch layer, and a second buffer layer are provided between the packaging structure and the light control structure.

[0017] For example, in a display substrate provided in at least one embodiment of this disclosure, the plurality of sub-pixels constitute a plurality of pixel units, each pixel unit including a first color sub-pixel and a second color sub-pixel arranged in the first direction, and a third color sub-pixel located on the same side of the first color sub-pixel and the second color sub-pixel in the second direction.

[0018] For example, in the display substrate provided in at least one embodiment of this disclosure, the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a blue sub-pixel, the third color sub-pixel is a green sub-pixel, and the outer contour shape of the orthographic projection of the first main body of the first anode corresponding to the red sub-pixel on the substrate is a first rectangle, and the outer contour shape of the orthographic projection of the third main body of the third anode corresponding to the green sub-pixel on the substrate is a third rectangle.

[0019] For example, in a display substrate provided in at least one embodiment of this disclosure, the first main body portion of the first anode corresponding to the red sub-pixel corresponds to a plurality of first pixel opening regions, and the orthographic projection of each first pixel opening region on the substrate is rectangular; the third main body portion of the third anode corresponding to the green sub-pixel corresponds to a plurality of third pixel opening regions, and the orthographic projection of each third pixel opening region on the substrate is rectangular.

[0020] For example, in a display substrate provided in at least one embodiment of this disclosure, the length of the side of the first rectangle extending in the second direction is less than the length of the side extending in the first direction; and the length of the side of the third rectangle extending in the second direction is less than the length of the side extending in the first direction.

[0021] For example, in a display substrate provided in at least one embodiment of this disclosure, in the third main body portion of the third anode corresponding to the green sub-pixel, the third main body portion has an electrode opening at at least a portion of the position corresponding to the pixel spacing portion.

[0022] For example, in a display substrate provided in at least one embodiment of this disclosure, the width of the electrode opening in the second direction is greater than or equal to 2 micrometers and less than or equal to 10 micrometers, and the minimum distance between the electrode opening and the pixel opening is greater than 0 micrometers and less than or equal to 5 micrometers.

[0023] For example, in a display substrate provided in at least one embodiment of this disclosure, a planarization layer is further disposed between the light-emitting element and the substrate. The light-emitting element further includes a second electrode disposed on the side of the light-emitting layer away from the substrate. A pixel driving circuit is disposed between the planarization layer and the substrate. The first electrode and the pixel driving circuit are electrically connected through a via structure in the planarization layer.

[0024] At least one embodiment of this disclosure also provides a display device, which includes the display substrate described in any of the above claims. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0026] Figure 1 is a plan view of the fluorescent display of the panel with integrated light control film;

[0027] Figure 2 is a schematic diagram of the stacked structure of a display substrate with an integrated light control film;

[0028] Figure 3 is a schematic cross-sectional view of a display substrate provided in at least one embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of a planar structure of a display substrate provided in at least one embodiment of the present disclosure;

[0030] Figure 5 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure;

[0031] Figure 6 is a schematic cross-sectional view of another display substrate provided in at least one embodiment of the present disclosure;

[0032] Figure 7 is a schematic cross-sectional view of another display substrate provided in at least one embodiment of the present disclosure;

[0033] Figure 8 is a schematic cross-sectional view of another display substrate provided in at least one embodiment of the present disclosure;

[0034] Figure 9 is a schematic cross-sectional view of another display substrate provided in at least one embodiment of the present disclosure;

[0035] Figure 10 is a layout of a first electrode provided in at least one embodiment of this disclosure;

[0036] Figure 11 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure;

[0037] Figure 12 is a schematic diagram of the planar structure of another display substrate provided in at least one embodiment of the present disclosure; and

[0038] Figure 13 is a schematic diagram of a display device provided in at least one embodiment of the present disclosure. Detailed Implementation

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

[0040] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0041] Unless otherwise defined, the features such as "parallel," "perpendicular," and "identical" used in the embodiments of this invention include strictly defined cases of "parallel," "perpendicular," and "identical," as well as cases involving a certain degree of error, such as "approximately parallel," "approximately perpendicular," and "approximately identical." For example, the aforementioned "approximately" may indicate that the difference between the compared objects is within 10% or 5% of the average value of the compared objects. Unless otherwise specified in the following embodiments of this invention, the quantity of a component or element is implied to mean that the component or element may be one or more, or can be understood as at least one. "At least one" refers to one or more, and "more" refers to at least two. In the embodiments of this invention, "same-layer arrangement" refers to the relationship between multiple film layers formed from the same material after undergoing the same step (e.g., a patterning process). Here, "same-layer" does not always mean that the multiple film layers have the same thickness or that the multiple film layers have the same height in a cross-sectional view.

[0042] Considering driver safety, the brightness of in-vehicle screens varies depending on the viewing angle, thus requiring different design structures to meet diverse application scenarios. Currently, the automotive market uses Light Control Film (LCF) to achieve viewing angles in the H direction (wide viewing angle) and V direction (LCF direction). During LCF panel integration, the size of the emitting layers and the black matrix in the H and V directions are controlled to achieve rapid brightness decay at small viewing angles and absorption of brightness at large viewing angles. For example, Figure 1 shows a plan view of the fluorescent display of a panel integrated with a light control film. As can be seen from Figure 1, the red sub-pixel emitting red light has the smallest emitting area, while the green sub-pixel emitting green light has the largest emitting area. The horizontal length of a green sub-pixel corresponds to the sum of the horizontal lengths of a red sub-pixel and a green sub-pixel. For example, Figure 2 is a schematic diagram of the stacked structure of a display substrate integrated with a light control film. As shown in Figure 2, this display substrate includes two stacked black matrix layers, and the width of the pixel openings corresponding to the emitting layers is used to control the viewing angle in the V direction.

[0043] For example, as shown in FIG2, the display substrate 100 includes: a substrate 101, a pixel defining layer 102 on the substrate 101, the pixel defining layer 102 including a plurality of pixel openings 103 and pixel spacing portions 104 spacing the plurality of pixel openings 103. The display substrate 100 also includes a plurality of sub-pixels 105 on the substrate 101, the plurality of sub-pixels 105 corresponding one-to-one with the plurality of pixel openings 103, each sub-pixel 105 including a light-emitting element 106, and a light control structure 107 disposed on the light-emitting element 106, the light control structure 107 including a first black matrix layer 1071, a first transparent adhesive layer 1072, a second black matrix layer 1073 and a second transparent adhesive layer 1074 stacked thereon, and the orthographic projection of the first black matrix layer 1071 and the second black matrix layer 1073 on the substrate 101 and the orthographic projection of the light-emitting layer 1061 of the light-emitting element 106 on the substrate 101 do not overlap. It should be noted that only one pixel opening 103 is shown in Figure 2. This single pixel opening 103 contains only one sub-pixel 105, and this single sub-pixel 105 corresponds to one first electrode. In the display substrate 100 shown in Figure 2, the light control structure 107 is integrated inside the display substrate 100. This reduces the process of forming an external light control structure while meeting normal display requirements, allowing the light control structure to be integrated into the display substrate. Consequently, the final display device structure is thinner and lighter, and the production cost is lower. However, the stacked structure of the display substrate with integrated light control film shown in Figure 2 has some problems in optical display and image quality. For example, there will be rapid attenuation of brightness at small viewing angles and absorption of brightness at large viewing angles, resulting in blue tint at viewing angles and severe image ghosting.

[0044] The inventors of this disclosure have noted that a display substrate with a light control film function can be provided, which avoids the problems of rapid brightness decay at small viewing angles and blue tinting and severe image ghosting caused by absorption of brightness at large viewing angles by pixel segmentation and optimization of the anode ratio.

[0045] For example, Figure 3 is a cross-sectional structural schematic diagram of a display substrate provided in at least one embodiment of the present disclosure, and Figure 4 is a planar structural schematic diagram of a display substrate provided in at least one embodiment of the present disclosure. As shown in Figures 3 and 4, the display substrate 200 includes: a substrate 201; a pixel defining layer 202 located on the substrate 201, including a plurality of pixel openings 203 and pixel spacing portions 204 that space the plurality of pixel openings 203; a plurality of sub-pixels 205 located on the substrate 201, corresponding one-to-one with the plurality of pixel openings 203, each sub-pixel 205 including a light-emitting element 206, the light-emitting element 206 including a light-emitting layer 2061 and a plurality of mutually spaced first electrodes 207, each first electrode 207 corresponding to a plurality of sub-pixels 205; the orthographic projections of a plurality of adjacent light-emitting layers 2061 emitting light of the same color on the substrate 201 are located within the orthographic projections of the same first electrode 207 on the substrate 201, and the orthographic projections of the light-emitting layers 2061 on a plane parallel to the main surface of the substrate 201 are elongated. As shown in Figure 4, the first side 2061a of the light-emitting layer 2061 extends along the first direction X, and the second side 2061b intersecting the first side X extends along the second direction Y. Embodiments of this disclosure divide the light-emitting layer corresponding to sub-pixels 205 that emit light of the same color into multiple light-emitting layers with smaller light-emitting areas, and optimize the ratio of the first electrode 207 to avoid the problems of rapid brightness decay at small viewing angles and blue tint and severe image ghosting caused by absorption of brightness at large viewing angles.

[0046] For example, in the structure shown in FIG3, one first electrode 207 corresponds to three sub-pixels 205, that is, the orthographic projections of three adjacent light-emitting layers 2061 emitting the same color of light on the substrate 201 are located within the orthographic projection of the same first electrode 207 on the substrate 201. However, the embodiments of this disclosure are not limited to this. It is also possible to divide the light-emitting layer corresponding to the sub-pixel 205 emitting the same color of light into three or more light-emitting layers with smaller light-emitting areas, that is, three or more light-emitting layers correspond to one first electrode 207.

[0047] For example, in the structure shown in Figure 3, the substrate 201 can be made of a light-transmitting material. For example, the substrate 201 can be inorganic glass, plexiglass, plastic substrate, or other organic material substrate. The first substrate 201 can be rigid or flexible.

[0048] For example, as shown in Figure 4, the first direction X can be perpendicular to the second direction Y. In the second direction Y, the phenomenon of projection on the dashboard can be reduced, as well as the difference in viewing angle caused by the brightness difference of the in-vehicle screen in the first direction X can be reduced.

[0049] For example, as shown in Figure 4, in order to ensure the consistency of the light emission attenuation of light-emitting devices of various colors and to shorten the color deviation trajectory, it is necessary to segment the sub-pixels that emit light of the same color. For example, only the sub-pixels that emit light of one color can be segmented, or the sub-pixels that emit light of multiple colors can be segmented at the same time. For example, the sub-pixels that emit light of two different colors can be segmented, or the sub-pixels that emit light of three different colors can be segmented. Figure 4 illustrates this by taking the segmentation of sub-pixels that emit light of three different colors as an example.

[0050] For example, as shown in Figure 4, the length of the first side 2061a of the light-emitting layer 2061 in the first direction X and the length of the corresponding first electrode 207 in the first direction X are equal or approximately equal. That is, multiple light-emitting layers 2061 are arranged sequentially only in the second direction Y. The length of each light-emitting layer 2061 in the first direction X and the length of the corresponding first electrode 207 in the first direction X are equal or approximately equal. This can ensure uniform light output and the continuity of light output.

[0051] It should be noted that, due to limitations in the fabrication process, the length of each light-emitting layer 2061 in the first direction X is slightly less than the length of the corresponding first electrode 207 in the first direction X. That is, the length of each light-emitting layer 2061 in the first direction X and the length of the corresponding first electrode 207 in the first direction X are approximately equal.

[0052] For example, in another example, multiple light-emitting layers 2061 are arranged in an array along a first direction X and a second direction Y. The multiple light-emitting layers 2061 arranged in this array correspond to a first electrode. That is, the sum of the lengths of the first sides 2061a of the multiple light-emitting layers 2061 arranged in the first direction X in the first direction X is equal to or approximately equal to the length of the corresponding first electrode 207 in the first direction X. This allows for the formation of multiple arrayed light-emitting layers 2061, making it easier to adjust the brightness of the light-emitting layers 2061.

[0053] For example, referring to Figures 3 and 4, the orthographic projections of three adjacent light-emitting layers 2061 emitting the same color of light onto the substrate 201 lie within the orthographic projection of the same first electrode 207 onto the substrate 201. Each light-emitting layer 2061 has a width of a first width 'a' in the second direction Y, and the spacing between adjacent light-emitting layers 2061 is a first distance 'b'. The width 'd' of the first electrode 207 in the second direction Y is greater than 3a + 2b, and the distance between the edge of the first electrode 207 and the edge of the pixel defining layer 202 is greater than or equal to 2 micrometers. Both sides of the first electrode 207 in the second direction Y are outside the edges of the light-emitting layers 2061. This satisfies the condition that the orthographic projection of the light-emitting layer 2061 onto the substrate 201 lies within the orthographic projection of its corresponding first electrode 207 onto the substrate 201.

[0054] For example, in Figure 4, the first color emitting layer is divided into three first color emitting layers with smaller emitting areas, the second color emitting layer is divided into three second color emitting layers with smaller emitting areas, and the third color emitting layer is divided into three third color emitting layers with smaller emitting areas. For multiple first color emitting layers, the width of each first color emitting layer in the second direction Y is a, and the second direction Y is parallel to the narrow viewing angle direction of the screen, that is, the direction perpendicular to the horizontal plane, to achieve the light emission effect of the narrow viewing angle, so as to make driving safer. The spacing between adjacent first color emitting layers is b, and the distance from the boundary of the first electrode 207 to the boundary of the pixel opening is c, and c is greater than or equal to 2 micrometers, that is, the width d of the first electrode 207 in the second direction Y is greater than 3a+2b. Similarly, the second color emitting layer and the third color emitting layer also have the above size relationship.

[0055] For example, as shown in FIG3, the display substrate 200 further includes a light control structure 208 disposed on the light-emitting element 206. The light control structure 208 includes a first black matrix layer 2081, a first transparent adhesive layer 2082, a second black matrix layer 2083, and a second transparent adhesive layer 2084 stacked together. The orthographic projections of the first black matrix layer 2081 and the second black matrix layer 2083 on the substrate 201 do not overlap with the orthographic projection of the light-emitting layer 2061 of the light-emitting element 206 on the substrate 201. The second black matrix layer 2083 is located on the side of the first black matrix layer 2081 away from the substrate 201. The first black matrix layer 2081 includes a first hollow area 301, and the second black matrix layer 2083 includes a second hollow area 302. The orthographic projections of the first hollow area 301 and the second hollow area 302 on the substrate 201 overlap and both expose the corresponding light-emitting element 206. For example, exposing the corresponding light-emitting element 206 in both the first cutout area 301 and the second cutout area 302 can enable the display substrate to perform normal display, thereby ensuring the display effect of the final display device.

[0056] For example, as shown in FIG3, the orthographic projections of the first black matrix layer 2081 and the second black matrix layer 2083 on the substrate 201 are both located within the orthographic projection of the pixel spacing portion 204 on the substrate 201, which can avoid further reduction of the light-emitting area.

[0057] For example, in one example, the area of ​​the orthographic projection of the first cutout region 301 onto the substrate 201 is less than or equal to the area of ​​the orthographic projection of the second cutout region 302 onto the substrate 201, and the orthographic projection of the first cutout region 301 onto the substrate 201 lies within the orthographic projection of the second cutout region 302 onto the substrate 201, and the orthographic projection of the light-emitting element 206 onto the substrate 201 lies within the orthographic projection of the first cutout region 301 onto the substrate 201. This allows light rays emanating obliquely from the periphery of the first cutout region 301 to exit through the second cutout region 302. For example, in Figure 3, light rays emanating obliquely from the left or right side of the first cutout region 301 can exit through the second cutout region 302, thereby meeting the display requirements of the display device.

[0058] For example, in one example, the area of ​​the orthographic projection of the first cutout region 301 onto the substrate 201 is 1 / 2, 2 / 3, 3 / 4, or 4 / 5 of the area of ​​the orthographic projection of the second cutout region 302 onto the substrate 201, or the area of ​​the orthographic projection of the first cutout region 301 onto the substrate 201 and the area of ​​the orthographic projection of the second cutout region 302 onto the substrate 201 are equal. The embodiments disclosed herein do not limit this.

[0059] For example, referring to Figure 3, in one example, the area of ​​the orthographic projection of the pixel opening 203 onto the substrate 201 is smaller than the area of ​​the orthographic projection of the first cutout region 301 onto the substrate 201, and smaller than the area of ​​the orthographic projection of the second cutout region 302 onto the substrate 201. The orthographic projection of the pixel opening 203 onto the substrate 201 lies within the orthographic projection of the first cutout region 301 onto the substrate 201, and also within the orthographic projection of the second cutout region 302 onto the substrate 201. This allows the light-emitting element 206 to be located within the pixel opening 203, and ensures that all light emitted from the light-emitting element 206 can be emitted from both the first cutout region 301 and the second cutout region 302.

[0060] For example, in one embodiment, the first transparent adhesive layer 2082 can fill the first hollow area 301 included in the first black matrix layer 2081, and make the first black matrix layer 2081 have a flat surface, and can bond the second black matrix layer 2083 to the first black matrix layer 2081. The second transparent adhesive layer 2084 can fill the second hollow area 302 included in the second black matrix layer 2083, and make the second black matrix layer 2083 have a flat surface, and the stacking of the second black matrix layer 2083 and the first black matrix layer 2081 can make the final black matrix achieve the required thickness.

[0061] For example, as shown in Figure 3, in the direction of the sub-pixel 205 arrangement, the pixel opening 203 and the corresponding first hollow area 301 each have a first side and a second side. For the first hollow area 301 located in the middle, on the first side, there is a first gap m1 between the edge of the pixel opening 203 and the edge of the corresponding first hollow area 301; on the second side, there is a second gap m2 between the edge of the pixel opening 203 and the edge of the corresponding first hollow area 301. The first gap m1 can be equal to the second gap m2, thereby adjusting the amount of light emitted from both sides of the pixel opening 203 to make the amount of emitted light more uniform. For the first cutout area 301 located on the right side, on the first side, the first spacing between the edge of the pixel opening 203 and the edge of the corresponding first cutout area 301 can be equal to the second spacing between the edge of the pixel opening 203 and the edge of the corresponding first cutout area 301 on the second side; for the first cutout area 301 located on the left side, on the first side, the first spacing between the edge of the pixel opening 203 and the edge of the corresponding first cutout area 301 can be greater than the second spacing between the edge of the pixel opening 203 and the edge of the corresponding first cutout area 301 on the second side.

[0062] For example, Figure 5 is a schematic diagram of another planar structure of a display substrate provided in at least one embodiment of the present disclosure. As shown in Figure 5, in the edge region of the corresponding first electrode, the outer contour of the light-emitting layer can be a long strip with missing corners to adapt to the shape of the first electrode at the edge position.

[0063] For example, as shown in FIG3, the display substrate 200 further includes an encapsulation structure 209 disposed between the light-emitting element 206 and the light control structure 208. The encapsulation structure 209 includes a first inorganic encapsulation layer 2091, an organic encapsulation layer 2092 and a second inorganic encapsulation layer 2093 stacked together. The encapsulation structure 209 adopts a structure with an organic layer sandwiched between two inorganic layers, which can improve the effect of preventing water and oxygen intrusion.

[0064] For example, as shown in FIG3, the encapsulation structure 209 may have the shape of a continuous film formed over the light-emitting region and the non-light-emitting region. The first inorganic encapsulation layer 2091 and the second inorganic encapsulation layer 2093 are made of inorganic materials selected from at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride (SiON), or lithium fluoride. As another example, the organic encapsulation layer 2092 is made of organic materials, such as at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, or dinaphthalene-containing resin. Those skilled in the art can modify the number of layers, materials, and structure of the encapsulation structure 209 as needed; the embodiments disclosed herein are not limited thereto.

[0065] For example, at the edge position, the first inorganic encapsulation layer 2091 and the second inorganic encapsulation layer 2093 are in contact, the materials of the first inorganic encapsulation layer 2091 and the second inorganic encapsulation layer 2093 are inorganic insulating materials, and the material of the organic encapsulation layer 2092 is organic insulating material.

[0066] For example, as shown in Figure 3, the thickness of the organic encapsulation layer 2092 is greater than 0 and less than or equal to 10 micrometers, and the thickness of the first transparent adhesive layer 2082 is greater than or equal to 8 micrometers and less than or equal to 30 micrometers. This can prevent light leakage from a single sub-pixel when the viewing angle is 45 degrees to 80 degrees, and can also achieve the effect of privacy protection.

[0067] For example, Figure 6 is a cross-sectional structural diagram of another display substrate provided in at least one embodiment of this disclosure. As shown in Figure 6, a first buffer layer 210, a touch layer 211, and a second buffer layer 212 are disposed between the encapsulation structure 209 and the light control structure 208. The materials of the first buffer layer 210 and the second buffer layer 212 can be the same or different. The materials of the first buffer layer 210 and the second buffer layer 212 can both be inorganic insulating materials. The first buffer layer 210 and the second buffer layer 212 can protect the touch layer 211 sandwiched between them. For example, the touch layer 211 may include a touch electrode structure, which includes a touch scanning electrode and a touch sensing electrode. The touch sensing electrode includes a first sensing sub-electrode and a second sensing sub-electrode. The structure of the touch layer is not limited to this; reference can be made to the structure of conventional touch layers. The embodiments of this disclosure do not limit this.

[0068] For example, in Figure 6, the combined structure formed by the first buffer layer 210, the touch layer 211, and the second buffer layer 212 is located between the first black matrix layer 2081 and the second black matrix layer 2083, and the touch layer 211 is a structure formed by two layers of metal.

[0069] For example, Figure 7 is a schematic cross-sectional view of another display substrate provided in at least one embodiment of this disclosure. As shown in Figure 7, a first buffer layer 210, a touch layer 211, and a second buffer layer 212 are disposed on the side of the light control structure 208 away from the substrate 201. The materials of the first buffer layer 210 and the second buffer layer 212 can be the same or different. The materials of the first buffer layer 210 and the second buffer layer 212 can both be inorganic insulating materials. The first buffer layer 210 and the second buffer layer 212 can protect the touch layer 211 sandwiched between them. For example, the touch layer 211 may include a touch electrode structure, which includes a touch scanning electrode and a touch sensing electrode. The touch sensing electrode includes a first sensing sub-electrode and a second sensing sub-electrode. The structure of the touch layer is not limited to this. Refer to the structure of a conventional touch layer. The embodiments of this disclosure are not limited in this respect.

[0070] That is, in Figure 7, the combined structure formed by the first buffer layer 210, the touch layer 211 and the second buffer layer 212 is located on the side of the second black matrix layer 2083 away from the substrate 201, and the touch layer 211 is a structure formed by two layers of metal.

[0071] For example, Figure 8 is a cross-sectional structural diagram of another display substrate provided in at least one embodiment of this disclosure. As shown in Figure 8, a first buffer layer 210, a single-layer touch layer 211, and a second buffer layer 212 are disposed between the encapsulation structure 209 and the light control structure 208. The materials of the first buffer layer 210 and the second buffer layer 212 can be the same or different. The materials of the first buffer layer 210 and the second buffer layer 212 can both be inorganic insulating materials. The first buffer layer 210 and the second buffer layer 212 can protect the touch layer 211 sandwiched between them. For example, the touch layer 211 may include a touch electrode structure, which includes a touch scanning electrode and a touch sensing electrode. The touch sensing electrode includes a first sensing sub-electrode and a second sensing sub-electrode. The structure of the touch layer is not limited to this; reference can be made to the structure of conventional touch layers. The embodiments of this disclosure do not limit this.

[0072] For example, in Figure 8, the combined structure formed by the first buffer layer 210, the touch layer 211, and the second buffer layer 212 is located between the first black matrix layer 2081 and the second black matrix layer 2083, and the touch layer 211 is a structure formed by a single layer of metal.

[0073] For example, Figure 9 is a cross-sectional structural diagram of another display substrate provided in at least one embodiment of this disclosure. As shown in Figure 9, a first buffer layer 210, a single-layer touch layer 211, and a second buffer layer 212 are disposed on the side of the light control structure 208 away from the substrate 201. The materials of the first buffer layer 210 and the second buffer layer 212 can be the same or different. The materials of the first buffer layer 210 and the second buffer layer 212 can both be inorganic insulating materials. The first buffer layer 210 and the second buffer layer 212 can protect the touch layer 211 sandwiched between them. For example, the touch layer 211 may include a touch electrode structure, which includes a touch scanning electrode and a touch sensing electrode. The touch sensing electrode includes a first sensing sub-electrode and a second sensing sub-electrode. The structure of the touch layer is not limited to this. Refer to the structure of a conventional touch layer. The embodiments of this disclosure are not limited in this respect.

[0074] For example, in Figure 9, the combined structure formed by the first buffer layer 210, the touch layer 211, and the second buffer layer 212 is located on the side of the second black matrix layer 2083 away from the substrate 201, and the touch layer 211 is a structure formed by a single layer of metal.

[0075] For example, FIG10 is a layout of a first electrode provided in at least one embodiment of the present disclosure. For example, referring to FIG3 and FIG10, the light-emitting element 206 may include a plurality of switching elements located on the substrate 201. FIG10 shows the approximate location of the light-emitting element 206 with the first electrode 207 as an example. In a pixel unit 400, the switching elements include a plurality of first switching elements T1, a plurality of second switching elements T2, and a plurality of third switching elements T3, that is, a large sub-pixel is divided into a plurality of smaller sub-pixels. For example, the plurality of first switching elements T1 may be located in a first light-emitting region LA1, the plurality of second switching elements T2 may be located in a second light-emitting region LA2, and the plurality of third switching elements T3 may be located in a third light-emitting region LA3. As another example, at least one of the plurality of first switching elements T1, the plurality of second switching elements T2, and the plurality of third switching elements T3 may be a thin-film transistor comprising polysilicon or a thin-film transistor comprising oxide semiconductor. For example, when the switching element is a thin-film transistor comprising oxide semiconductor, it may be a thin-film transistor having a top-gate structure. The switching element may be connected to signal lines, which include, but are not limited to, gate lines, data lines, and power lines.

[0076] For example, in the structure shown in Figure 10, the direction of subpixel arrangement, for S-RGB arrangement, refers to the direction in which subpixels located in the same row are arranged in the row direction, or the direction in which subpixels located in the same column are arranged in the column direction. For example, the row direction is the second direction Y, and the column direction is the first direction X. In the second direction Y, multiple subpixels constitute multiple pixel units 400. Each pixel unit 400 includes a first color subpixel 401 and a second color subpixel 402 arranged in the first direction X, and a third color subpixel 403 located on the same side of the first color subpixel 401 and the second color subpixel 402 in the second direction Y, and the first direction X and the second direction Y intersect. For example, in the example shown in Figure 7, the first direction X and the second direction Y are perpendicular. The first color sub-pixel 401 and the second color sub-pixel 402 are arranged sequentially in the first direction X, that is, in the vertical direction. The third color sub-pixel 403 is located to the right of the first color sub-pixel 401 and the second color sub-pixel 402. Overall, the planar shape of the pixel unit 400 formed by the first color sub-pixel 401, the second color sub-pixel 402 and the third color sub-pixel 403 is rectangular, so that each pixel unit can be arranged in a regular manner to maximize the area of ​​the light-emitting region.

[0077] For example, referring to Figures 3 and 10, in one example, the first color sub-pixel 401 is a red sub-pixel, the second color sub-pixel 402 is a blue sub-pixel, and the third color sub-pixel 403 is a green sub-pixel. The outer contour shape of the orthographic projection of the first main body portion 4011a of the first anode 4011 corresponding to the red sub-pixel 401 on the substrate 201 is a first rectangle, and the outer contour shape of the orthographic projection of the third main body portion 4031a of the third anode 4031 corresponding to the green sub-pixel 403 on the substrate 201 is a third rectangle. The basically regular rectangle can also make the light-emitting area more regular so as to maximize the area of ​​the emitted light. It should be noted that the long strip-shaped connecting part extending from the edge should be ignored here, and only the shape of the main light-emitting area should be considered.

[0078] For example, as shown in Figures 3 and 10, the first main body portion 4011a of the first anode 4011 corresponding to the red sub-pixel corresponds to a plurality of first pixel opening regions, and the outer contour shape of the orthographic projection of each first pixel opening region on the substrate 201 is rectangular; the third main body portion 4031a of the third anode 4031 corresponding to the green sub-pixel corresponds to a plurality of third pixel opening regions, and the outer contour shape of the orthographic projection of each third pixel opening region on the substrate 201 is rectangular. The first pixel opening region corresponds to the opening for emitting light from the first color sub-pixel 401, and the third pixel opening region corresponds to the opening for emitting light from the third color sub-pixel 403.

[0079] For example, as shown in Figure 10, the length of the side extending in the second direction Y of the first rectangle is greater than the length of the side extending in the first direction X. The length of the side extending in the second direction Y of the third rectangle is less than the length of the side extending in the first direction X. The lengths of the long side of the first rectangle and the short side of the third rectangle are approximately equal. The first color sub-pixel 401 is a red sub-pixel, and the third color sub-pixel 403 is a green sub-pixel, thereby making the light-emitting area of ​​the green sub-pixel greater than the light-emitting area of ​​the red sub-pixel in a pixel unit 300.

[0080] For example, in one instance, the length of the long side of the third pixel opening region corresponding to the third color sub-pixel 403 in the first direction X is greater than or equal to 20 micrometers and less than 40 micrometers; the length of the short side of the third pixel opening region corresponding to the third color sub-pixel 403 in the second direction Y is greater than 5 micrometers and less than or equal to 10 micrometers. That is, the orthographic projection of the third main body corresponding to the third color sub-pixel 403 onto the substrate 201 is also rectangular, and the length of the long side of the third color sub-pixel 403 in the first direction X is approximately equal to the sum of the lengths of the sides of the first color sub-pixel 401 and the second color sub-pixel 402 in the first direction X. The area of ​​the orthographic projection of the third color sub-pixel 403 onto the substrate 201 is greater than the area of ​​the orthographic projection of the second color sub-pixel 402 onto the substrate 201, and also greater than the area of ​​the orthographic projection of the first color sub-pixel 401 onto the substrate 201.

[0081] For example, FIG11 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure. As shown in FIG3 and FIG11, in the third main body portion 4031a of the third anode 4031 corresponding to the green sub-pixel G, at least a portion of the corresponding pixel spacing portion 204 of the third main body portion 4031a has an electrode opening 2041.

[0082] For example, in a conventional pixel arrangement, the light-emitting area is formed by the first electrode and the pixel-defining layer directly above the first electrode. In Figure 11, the light-emitting layers corresponding to the red and green sub-pixels are divided into rectangles to achieve the function of integrating a light control film in the display panel. The third anode corresponding to the green sub-pixel has the largest area, which also maximizes the width of the electrode opening 2041 in the second direction Y, thereby making the light-emitting area of ​​the green sub-pixel larger and the lifespan of the final light-emitting diode display device longer. The first electrode corresponding to the green sub-pixel has the largest area, which makes the overlap area between the first and second electrodes of the green sub-pixel relatively larger than that of traditional products. When the green sub-pixel emits light, the geometric capacitance formed by the first and second electrodes of the green sub-pixel needs to be charged first. This will cause a delay in light emission and shutdown, resulting in the phenomenon of green sub-pixel light emission ghosting.

[0083] For example, as shown in Figure 11, designing an electrode opening in the first electrode structure corresponding to the green sub-pixel can reduce the capacitance of the green sub-pixel and increase the brightness ratio of the first frame. To solve the problem of severe ghosting in the green sub-pixel, considering that the operating voltages of the red and green sub-pixels in the LED device are basically the same and their reset requirements are basically the same, the area of ​​the first electrode corresponding to the red sub-pixel and the area of ​​the first electrode corresponding to the green sub-pixel can be designed to be as close as possible without affecting the connectivity of the first electrode. The area of ​​the first electrode corresponding to the blue sub-pixel can be determined based on the opening areas of the red, green, and blue sub-pixels in the LED device.

[0084] For example, as shown in Figure 11, the width k of the electrode opening 2041 in the second direction Y is greater than or equal to 2 micrometers and less than or equal to 10 micrometers, and the minimum distance f between the electrode opening 2041 and the pixel opening is greater than 0 micrometers and less than or equal to 5 micrometers. For example, the width k of the electrode opening 2041 in the second direction Y is 3 micrometers.

[0085] For example, FIG12 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure. Referring to FIGS. 3 and 12, in the third main body portion 4031a of the third anode 4031 corresponding to the green sub-pixel G, at least a portion of the corresponding pixel spacing portion 204 of the third main body portion 4031a has an electrode opening 2041. In the third main body portion 4021a of the second anode 4021 corresponding to the blue sub-pixel B, at least a portion of the corresponding pixel spacing portion 204 of the second main body portion 4021a has an electrode opening 2041. The electrode openings 2041 designed in the first electrodes corresponding to the blue and green sub-pixels can avoid the phenomenon of light emission ghosting between the green and blue sub-pixels.

[0086] For example, as shown in Figures 3, 6, 7, 8 and 9, a planarization layer 213 is also provided between the light-emitting element and the substrate 201. The light-emitting element also includes a second electrode disposed on the side of the light-emitting layer away from the substrate 201, and a first electrode 207 on the side of the second electrode close to the substrate 201. A pixel driving circuit 215 is provided between the planarization layer 213 and the substrate 201. The first electrode 207 and the pixel driving circuit 215 are electrically connected through a via structure 216 in the planarization layer 213.

[0087] For example, the pixel driving circuit 215 is configured to drive the light-emitting element to emit light. The light-emitting functional layer may include multiple sub-functional layers, and the multiple sub-functional layers may include charge generation layers with high conductivity. It should be noted that the above-mentioned light-emitting functional layer does not only include film layers that directly emit light, but also includes functional film layers used to assist in light emission, such as: hole injection layer, hole transport layer, electron injection layer, electron transport layer, electron blocking layer, and hole blocking layer, etc.

[0088] For example, the first electrode can be an anode, and the second electrode can be 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 metallic material. For example, the anode can be formed of a transparent conductive material with a high work function.

[0089] For example, the pixel driving circuit 215 can be electrically connected to the first electrode 207 in the correspondingly configured light-emitting element, thereby driving the light-emitting element to emit light. Multiple sub-pixels emitting different colors of light can share a second electrode, that is, multiple sub-pixels emitting different colors of light can share a cathode. Alternatively, multiple sub-pixels emitting the same color of light can share a second electrode, that is, multiple sub-pixels emitting the same color of light can share a cathode.

[0090] For example, as shown in Figures 3, 6, 7, 8 and 9, the material of the planarization layer 213 can be an organic material, such as one or a combination of resin, acrylic or polyethylene terephthalate, polyimide, polyamide, polycarbonate, epoxy resin, etc.

[0091] For example, in one example, the thickness of the planarization layer 213 is 1 micrometer to 3 micrometers. In another example, the thickness of the planarization layer 213 is 1.5 micrometers to 2 micrometers.

[0092] For example, in some examples, other film layers are disposed between the planarization layer 213 and the substrate 201. These other film layers may include gate insulating layers, interlayer insulating layers, various film layers in pixel driving circuits (e.g., including thin film transistors, storage capacitors, etc.), data lines, gate lines, power signal lines, reset power signal lines, reset control signal lines, light emission control signal lines, etc.

[0093] At least one embodiment of this disclosure also provides a display device, which includes the display substrate described in any of the preceding claims. Figure 13 is a schematic diagram of a display device provided in at least one embodiment of this disclosure. As shown in Figure 13, the display device 700 further includes a display substrate 200. When this display device is applied to automotive display products, the automotive display product can display normally, reducing projection phenomena on the dashboard to avoid affecting road condition judgment. Furthermore, under the condition of meeting normal display requirements, the display device can reduce the process of forming a dedicated external light control structure, allowing the light control structure to be integrated into the display substrate included in the display device, resulting in a thinner and lighter final display device with lower production costs. In addition, the display substrate included in this display device avoids crosstalk between adjacent sub-pixels caused by the highly conductive charge generation layer by setting a partition structure between adjacent sub-pixels and disconnecting the charge generation layer in the light-emitting functional layer at the location of the partition structure. Therefore, the display device including this display substrate can also avoid crosstalk between adjacent sub-pixels, thus achieving higher product yield and higher display quality.

[0094] On the other hand, since the display substrate can increase pixel density while employing a dual-layer tandem EL design, display devices including this display substrate have advantages such as long lifespan, low power consumption, high brightness, and high resolution.

[0095] 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.

[0096] The following points need to be explained:

[0097] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0098] (2) For clarity, the thickness of layers or regions in the drawings used to describe embodiments of the present disclosure is enlarged or reduced, i.e., these drawings are not drawn to actual scale.

[0099] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0100] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure should be determined by the scope of protection of the claims.

Claims

1. A display substrate, comprising: Substrate; A pixel defining layer, located on the substrate, includes a plurality of pixel openings and pixel spacing portions that space the plurality of pixel openings; Multiple sub-pixels are located on the substrate and correspond one-to-one with the multiple pixel openings. Each sub-pixel includes a light-emitting element, which includes a light-emitting layer and multiple spaced-apart first electrodes. Each first electrode corresponds to multiple sub-pixels. The orthographic projections of multiple adjacent light-emitting layers emitting the same color of light onto the substrate are located within the orthographic projection of the same first electrode onto the substrate, and the orthographic projection of the light-emitting layer onto a plane parallel to the main surface of the substrate is elongated, with a first side of the light-emitting layer extending along a first direction and a second side intersecting the first side extending along a second direction.

2. The display substrate according to claim 1, wherein, The length of the first side of the light-emitting layer in the first direction is equal to or approximately equal to the length of the corresponding first electrode in the first direction.

3. The display substrate according to claim 1, wherein, The sum of the lengths of the first sides of the plurality of light-emitting layers arranged in the first direction is equal to or approximately equal to the length of the corresponding first electrode in the first direction.

4. The display substrate according to claim 2, wherein, The orthographic projections of three adjacent light-emitting layers emitting the same color of light onto the substrate are located within the orthographic projection of the same first electrode onto the substrate. The width of each light-emitting layer in the second direction is a first width a, the spacing between adjacent light-emitting layers is a first distance b, the width d of the first electrode in the second direction is greater than 3a+2b, and the distance between the edge of the first electrode and the edge of the pixel defining layer is greater than or equal to 2 micrometers.

5. The display substrate according to any one of claims 1 to 4, further comprising a light control structure disposed on the light-emitting element, wherein, The light control structure includes a first black matrix layer, a first transparent adhesive layer, a second black matrix layer, and a second transparent adhesive layer stacked together. The orthographic projections of the first black matrix layer and the second black matrix layer on the substrate and the orthographic projections of the light-emitting layer of the light-emitting element on the substrate do not overlap.

6. The display substrate according to claim 5, wherein, The orthographic projections of the first black matrix layer and the second black matrix layer on the substrate are both located within the orthographic projection of the pixel spacing portion on the substrate.

7. The display substrate according to claim 5, wherein, The second black matrix layer is located on the side of the first black matrix layer away from the substrate. The first black matrix layer includes a first cutout area, and the second black matrix layer includes a second cutout area. The orthographic projections of the first cutout area and the second cutout area on the substrate overlap, and both expose the light-emitting layer of the corresponding light-emitting element.

8. The display substrate according to claim 7, wherein, The area of ​​the first hollow area projected onto the substrate is less than or equal to the area of ​​the second hollow area projected onto the substrate, and the first hollow area projected onto the substrate is located within the second hollow area projected onto the substrate, and the light-emitting element projected onto the substrate is located within the first hollow area projected onto the substrate.

9. The display substrate according to claim 7, wherein, The area of ​​the pixel opening projected onto the substrate is smaller than the area of ​​the first hollow area projected onto the substrate, and smaller than the area of ​​the second hollow area projected onto the substrate. The orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the first cutout area on the substrate, and is also located within the orthographic projection of the second cutout area on the substrate.

10. The display substrate according to claim 9, wherein, In the direction of the sub-pixel arrangement, the pixel opening and the corresponding first hollow area each have a first side and a second side. On the first side, there is a first gap between the edge of the pixel opening and the edge of the corresponding first hollow area. On the second side, there is a second spacing between the edge of the pixel opening and the edge of the corresponding first hollow area, and the first spacing and the second spacing are equal.

11. The display substrate according to any one of claims 5 to 10, further comprising an encapsulation structure disposed between the light-emitting element and the light control structure, wherein, The encapsulation structure includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked together.

12. The display substrate according to claim 11, wherein, The thickness of the organic encapsulation layer is greater than 0 and less than or equal to 10 micrometers, and the thickness of the first transparent adhesive layer is greater than or equal to 8 micrometers and less than or equal to 30 micrometers.

13. The display substrate according to claim 11, wherein, A first buffer layer, a touch layer, and a second buffer layer are disposed between the encapsulation structure and the light control structure.

14. The display substrate according to any one of claims 1 to 13, wherein, The plurality of sub-pixels constitute a plurality of pixel units, each pixel unit including a first color sub-pixel and a second color sub-pixel arranged in the first direction, and a third color sub-pixel located on the same side of the first color sub-pixel and the second color sub-pixel in the second direction.

15. The display substrate according to claim 14, wherein, The first color sub-pixel is a red sub-pixel, the second color sub-pixel is a blue sub-pixel, and the third color sub-pixel is a green sub-pixel. The outer contour shape of the orthographic projection of the first main body of the first anode corresponding to the red sub-pixel on the substrate is a first rectangle, and the outer contour shape of the orthographic projection of the third main body of the third anode corresponding to the green sub-pixel on the substrate is a third rectangle.

16. The display substrate according to claim 15, wherein, The first main body portion of the first anode corresponding to the red sub-pixel corresponds to a plurality of first pixel opening regions, and the orthographic projection of each first pixel opening region on the substrate is rectangular; the third main body portion of the third anode corresponding to the green sub-pixel corresponds to a plurality of third pixel opening regions, and the orthographic projection of each third pixel opening region on the substrate is rectangular.

17. The display substrate according to claim 15, wherein, The length of the side of the first rectangle extending in the second direction is less than the length of the side extending in the first direction; The length of the side of the third rectangle extending in the second direction is less than the length of the side extending in the first direction.

18. The display substrate according to any one of claims 15 to 17, wherein, In the third main body portion of the third anode corresponding to the green sub-pixel, the third main body portion has an electrode opening at at least a portion of the location corresponding to the pixel spacing portion.

19. The display substrate according to claim 18, wherein, The width of the electrode opening in the second direction is greater than or equal to 2 micrometers and less than or equal to 10 micrometers, and the minimum distance between the electrode opening and the pixel opening is greater than 0 micrometers and less than or equal to 5 micrometers.

20. The display substrate according to any one of claims 1 to 19, wherein, A planarization layer is further disposed between the light-emitting element and the substrate. The light-emitting element also includes a second electrode disposed on the side of the light-emitting layer away from the substrate. A pixel driving circuit is disposed between the planarization layer and the substrate. The first electrode and the pixel driving circuit are electrically connected through a via structure in the planarization layer.

21. A display device comprising a display substrate according to any one of claims 1 to 20.

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