Display substrate and display apparatus

Abstract

At least one embodiment of the present disclosure provides a display substrate and a display apparatus. The display substrate comprises: a base substrate; a pixel defining layer located on the base substrate and comprising a plurality of pixel openings and pixel spacing parts spacing apart the plurality of pixel openings; a plurality of sub-pixels located on the base substrate and being in one-to-one correspondence with the plurality of pixel openings, wherein each sub-pixel comprises a light-emitting element; and a light control structure arranged on the light-emitting elements, wherein the light control structure comprises a first black matrix layer, a first transparent bonding layer, a second black matrix layer, and a second transparent bonding layer which are stacked, and the orthographic projections of the first black matrix layer and the second black matrix layer on the base substrate do not overlap the orthographic projections of light-emitting layers of the light-emitting elements on the base substrate. The display apparatus comprising the display substrate can allow the light control structure to be integrated in the display substrate while satisfying normal display, thereby realizing a lighter and thinner structure of the display apparatus and lower production costs.

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.

[0003] Summary of the Invention

[0004] At least one embodiment of this disclosure provides a display substrate and a display device. The display substrate includes a light-emitting element with a light control structure. 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 and second black matrix layers on the substrate and the orthographic projections of the light-emitting layer of the light-emitting element on the substrate do not overlap. This display substrate reduces the need for a dedicated external light control structure. When a display device with this display substrate is applied to automotive displays, the automotive display can function normally, reducing projection phenomena on the dashboard and avoiding interference with road condition assessment. Furthermore, the display device can integrate the light control structure into the display substrate while maintaining normal display performance, resulting in a thinner and lighter display device with lower production costs. Additionally, the display substrate of this display device avoids crosstalk between adjacent sub-pixels caused by the highly conductive charge generation layer by providing 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 the display substrate can also avoid crosstalk between adjacent sub-pixels. Thus, the display substrate and display device provided by the embodiments of this disclosure have high product yield and high display quality.

[0005] 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, each sub-pixel including a light-emitting element; and 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 thereon, 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.

[0006] 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 corresponding light-emitting element.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] For example, at least one embodiment of the present disclosure provides a display substrate that 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.

[0011] 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.

[0012] 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 a second 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 a first direction, and the first direction and the second direction intersect.

[0013] 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 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 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.

[0014] For example, in a display substrate provided in at least one embodiment of this disclosure, the first main body portion of the first anode 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 corresponds to a plurality of third pixel opening regions, and the orthographic projection of each third pixel opening region on the substrate is rectangular.

[0015] 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 greater than the length of the side extending in the first direction.

[0016] For example, in the display substrate provided in at least one embodiment of this disclosure, the length of the long side of the third pixel opening region corresponding to the third color sub-pixel in the second direction 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 in the first direction is greater than 5 micrometers and less than or equal to 10 micrometers.

[0017] For example, in a display substrate provided in at least one embodiment of this disclosure, a planarization layer and a spacer layer are further disposed between the light-emitting element and the substrate, and the spacer layer is disposed on the side of the planarization layer away from the substrate; the surface of the planarization layer away from the substrate has a groove, the spacer layer has a first through hole penetrating the spacer layer, the pixel spacing portion includes a pixel spacing opening, and the first through hole, the groove and the pixel spacing opening are connected.

[0018] For example, in a display substrate provided in at least one embodiment of this disclosure, a portion of the orthogonal projection of the first through hole on the substrate is located within the orthogonal projection of the groove on the substrate, the orthogonal projection of the first through hole on the substrate is located between two adjacent sub-pixels, and both the orthogonal projection of the first through hole on the substrate and the orthogonal projection of the groove on the substrate are located within the orthogonal projection of the pixel spacing opening on the substrate.

[0019] For example, in a display substrate provided in at least one embodiment of this disclosure, the pixel spacing opening includes a first pixel spacing opening extending in the second direction, the first pixel spacing opening being between the third color sub-pixel and the second color sub-pixel, and in the first direction, the minimum distance between the first pixel spacing opening and the nearest third color sub-pixel is less than the minimum distance between the first pixel spacing opening and the nearest second color sub-pixel; the pixel spacing opening also includes a second pixel spacing opening extending in the first direction, the second pixel spacing opening being between the first color sub-pixel and the second color sub-pixel, and in the second direction, the minimum distance between the second pixel spacing opening and the nearest first color sub-pixel is less than the minimum distance between the second pixel spacing opening and the nearest second color sub-pixel.

[0020] For example, in the display substrate provided in at least one embodiment of this disclosure, in the first direction, the minimum distance between the first pixel spacing opening and the nearest third color sub-pixel is 4.5 micrometers to 7 micrometers, and the minimum distance between the first pixel spacing opening and the nearest second color sub-pixel is 8.5 micrometers to 13 micrometers; in the second direction, the minimum distance between the second pixel spacing opening and the nearest first color sub-pixel is 3.5 micrometers to 6 micrometers, and the minimum distance between the second pixel spacing opening and the nearest second color sub-pixel is 5.5 micrometers to 10 micrometers.

[0021] For example, in a display substrate provided in at least one embodiment of this disclosure, the area of ​​the orthogonal projection of the groove on the substrate is smaller than the area of ​​the orthogonal projection of the pixel spacing opening on the substrate, and the orthogonal projection of the groove on the substrate is located within the orthogonal projection of the pixel spacing opening on the substrate.

[0022] For example, in a display substrate provided in at least one embodiment of this disclosure, the pixel defining layer has a thickness of 1 micrometer to 3 micrometers on the main surface perpendicular to the substrate, the groove has a depth of 0.1 micrometer to 0.8 micrometers on the main surface perpendicular to the substrate, and the spacer layer has a thickness of 10 angstroms to 2500 angstroms on the main surface perpendicular to the substrate.

[0023] For example, in a display substrate provided in at least one embodiment of this disclosure, the ratio of the depth of the groove on the main surface perpendicular to the substrate to the thickness of the pixel defining layer on the main surface perpendicular to the substrate is in the range of 1 / 5 to 2 / 3.

[0024] For example, in a display substrate provided in at least one embodiment of this disclosure, two adjacent pixel units in the first direction constitute a pixel unit group, and two adjacent pixel unit groups in the second direction constitute a repeating unit; in the repeating unit, the pixel units located in the first row and arranged sequentially in the first direction are a first pixel unit and a second pixel unit, and the pixel units located in the second row and arranged sequentially in the first direction are a third pixel unit and a fourth pixel unit, a first spacer is provided at the edge of a repeating unit extending in the second direction and at the edge of the second pixel unit, and a second spacer is provided at the junction of the third pixel unit and the fourth pixel unit in a repeating unit.

[0025] For example, in the display substrate provided in at least one embodiment of this disclosure, the cross-sectional shape of the first spacer and the second spacer is circular or near-circular, and the diameter of the circle or the equivalent diameter of the near-circular spacer is in the range of 10 micrometers to 15 micrometers.

[0026] For example, in a display substrate provided in at least one embodiment of this disclosure, the second anode corresponding to the blue sub-pixel includes a second main body portion and an extension portion extending from the second main body portion to the space between two adjacent green sub-pixels in the second direction. A via structure is provided at a position away from the second main body portion of the extension portion. At least a portion of the via structure is disposed adjacent to the first spacer or the second spacer and spaced apart from each other.

[0027] For example, in a display substrate provided in at least one embodiment of this disclosure, the width of the first main body portion of the first anode in the first direction ranges from 10 micrometers to 20 micrometers, and the length in the second direction ranges from 8 micrometers to 10 micrometers; the width of the second main body portion of the second anode in the first direction ranges from 10 micrometers to 20 micrometers, and the length in the second direction ranges from 20 micrometers to 50 micrometers; the width of the third main body portion of the third anode in the first direction ranges from 15 micrometers to 25 micrometers, and the length in the second direction ranges from 30 micrometers to 60 micrometers.

[0028] For example, in a display substrate provided in at least one embodiment of this disclosure, the width of the first pixel opening region corresponding to the first main body portion in the first direction ranges from 5 micrometers to 15 micrometers, and the length in the second direction ranges from 3.5 micrometers to 10 micrometers.

[0029] For example, in a display substrate provided in at least one embodiment of this disclosure, the light-emitting element includes a first electrode, a second electrode, and a light-emitting functional layer sandwiched between the first electrode and the second electrode. The first electrode is located on the side of the second electrode closer to the substrate, and 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.

[0030] At least one embodiment of this disclosure also provides a display device, which includes the display substrate described in any of the above embodiments. Attached Figure Description

[0031] 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.

[0032] Figure 1 is a schematic cross-sectional view of a display substrate provided in at least one embodiment of the present disclosure;

[0033] Figure 2 is a layout of a first black matrix layer and a second black matrix layer provided in at least one embodiment of the present disclosure;

[0034] Figure 3 is a layout of a pixel-defining layer provided in at least one embodiment of the present disclosure;

[0035] Figure 4 is a layout of a pixel-defining layer and a first black matrix layer stacked according to at least one embodiment of the present disclosure;

[0036] Figure 5 is an enlarged view of the area shown in the dashed box M in Figure 4;

[0037] Figure 6 is a layout of the first electrode provided in at least one embodiment of this disclosure;

[0038] Figure 7 is a cross-sectional structural schematic diagram of a partial structure of another display substrate provided in at least one embodiment of the present disclosure;

[0039] Figure 8 is a layout of a single-layer structure of a spacer layer provided in at least one embodiment of the present disclosure;

[0040] Figure 9 is a layout of the stack of spacer layer and first electrode provided in at least one embodiment of the present disclosure;

[0041] Figure 10 is a layout of the stacked first electrode and pixel defining layer provided in at least one embodiment of the present disclosure;

[0042] Figure 11 is a schematic diagram of a planar structure of a pixel unit group provided in at least one embodiment of the present disclosure;

[0043] Figure 12 is a layout of a pixel unit group provided in at least one embodiment of the present disclosure;

[0044] Figure 13 is a schematic cross-sectional view of a light-emitting element provided in at least one embodiment of this disclosure; and

[0045] Figure 14 is a schematic diagram of a display device provided in at least one embodiment of the present disclosure. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] When applying OLED displays to automotive displays, driver safety is paramount, and screen brightness varies across viewing angles. This necessitates different structural designs to meet diverse application scenarios. Currently, the automotive market utilizes light control film (LCF) to achieve brightness differentiation at different viewing angles. Furthermore, the lifespan of the automotive display must match the lifespan of the vehicle, for example, approximately 10 years. The lifespan of single-layer OLED displays is insufficient to meet these requirements; therefore, tandem OLED displays have become the preferred choice for automotive OLED displays.

[0050] The inventors of this disclosure have noted that a structure for integrating a display device can be designed to reduce the production cost of each layer in an automotive screen and to integrate tandem OLED display devices into the display device, achieving an optimal structural design. Specifically, a display substrate can be designed such that a light control structure is disposed on the light-emitting element. This 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 and second black matrix layers onto the substrate do not overlap with the orthographic projections of the light-emitting layer of the light-emitting element onto the substrate. This reduces the need for a dedicated external light control structure while still meeting normal display requirements, allowing the light control structure to be integrated into the display substrate. Consequently, the resulting display device is thinner and lighter, with lower production costs.

[0051] At least one embodiment of this disclosure provides a display substrate and a display device including the display substrate. The display substrate includes: a substrate, a pixel defining layer on the substrate, the pixel defining layer including a plurality of pixel openings and pixel spacing portions spaced apart from the plurality of pixel openings; a plurality of sub-pixels on the substrate, the plurality of sub-pixels corresponding one-to-one with the plurality of pixel openings, each sub-pixel including a light-emitting element; and a light control structure disposed on the light-emitting element, the light control structure including a first black matrix layer, a first transparent adhesive layer, a second black matrix layer and a second transparent adhesive layer stacked together, wherein the orthographic projection of the first black matrix layer and the second black matrix layer on the substrate and the orthographic projection of the light-emitting layer of the light-emitting element on the substrate do not overlap. This allows the display to function normally when applied to automotive display products, reducing projection phenomena on the dashboard and avoiding interference with road condition judgment. Furthermore, the display device can reduce 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 included in the display device, resulting in a thinner and lighter structure and lower production cost for the final display device.

[0052] For example, FIG1 is a schematic cross-sectional view of a display substrate provided in at least one embodiment of the present disclosure. As shown in FIG1, the display substrate 100 includes: a substrate 101, a pixel defining layer 102 located 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 located 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 includes 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 together, 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. In the display substrate 100 shown in Figure 1, the light control structure 107 is integrated inside the display substrate 100. This reduces the need for a dedicated external light control structure while ensuring normal display. As a result, the light control structure can be integrated into the display substrate, making the final display device thinner and lighter, and reducing production costs.

[0053] For example, as shown in Figure 1, the second black matrix layer 1073 is located on the side of the first black matrix layer 1071 away from the substrate 101. The first black matrix layer 1071 includes a first cutout region 201, and the second black matrix layer 1073 includes a second cutout region 202. The orthographic projection of the first cutout region 201 onto the substrate 101 and the orthographic projection of the second cutout region 202 onto the substrate 101 overlap, and both expose the corresponding light-emitting elements 106. For example, the fact that both the first cutout region 201 and the second cutout region 202 expose the corresponding light-emitting elements 106 enables the display substrate to perform normal display, thereby ensuring the display effect of the final display device.

[0054] For example, in one example, the area of ​​the orthographic projection of the first cutout region 201 onto the substrate 101 is less than or equal to the area of ​​the orthographic projection of the second cutout region 202 onto the substrate 101, and the orthographic projection of the first cutout region 201 onto the substrate 101 lies within the orthographic projection of the second cutout region 202 onto the substrate 101. This allows light rays that are obliquely emitted from the periphery of the first cutout region 201 to exit through the second cutout region 202. For example, in Figure 1, light rays that are obliquely emitted from the left or right side of the first cutout region 201 can exit through the second cutout region 202, thereby meeting the display requirements of the display device.

[0055] For example, in one example, the area of ​​the orthographic projection of the first cutout region 201 onto the substrate 101 is 1 / 2, 2 / 3, 3 / 4, or 4 / 5 of the area of ​​the orthographic projection of the second cutout region 202 onto the substrate 101, or the area of ​​the orthographic projection of the first cutout region 201 onto the substrate 101 and the area of ​​the orthographic projection of the second cutout region 202 onto the substrate 101 are equal. The embodiments disclosed herein do not limit this.

[0056] For example, referring to Figure 1, in one example, the area of ​​the orthographic projection of the pixel opening 103 onto the substrate 101 is smaller than the area of ​​the orthographic projection of the first cutout region 201 onto the substrate 101, and smaller than the area of ​​the orthographic projection of the second cutout region 202 onto the substrate 101. The orthographic projection of the pixel opening 103 onto the substrate 101 lies within the orthographic projection of the first cutout region 201 onto the substrate 101, and also within the orthographic projection of the second cutout region 202 onto the substrate 101. This allows the light-emitting element 106 to be located within the pixel opening 103, and ensures that all light emitted from the light-emitting element 106 can be emitted from both the first cutout region 201 and the second cutout region 202.

[0057] For example, in one embodiment, the first transparent adhesive layer 1072 can fill the first hollow area 201 included in the first black matrix layer 1071, and make the first black matrix layer 1071 have a flat surface, and can bond the second black matrix layer 1073 to the first black matrix layer 1071. The second transparent adhesive layer 1074 can fill the second hollow area 202 included in the second black matrix layer 1073, and make the second black matrix layer 1073 have a flat surface, and the stacking of the second black matrix layer 1073 and the first black matrix layer 1071 can make the final black matrix achieve the required thickness.

[0058] For example, Figure 2 shows a layout of a first black matrix layer and a second black matrix layer according to at least one embodiment of this disclosure. For instance, in the layout structure shown in Figure 2, the planar structures of the first black matrix layer 1071 and the second black matrix layer 1073 are identical. In the structure shown in Figure 2, the unfilled portions are the actual solid portions of the black matrix, and the filled portions are the hollowed-out portions. The cross-sectional structure of the first black matrix layer 1071 and the second black matrix layer 1073 in the cross-sectional structure shown in Figure 1 is a cross-sectional structure formed by cutting at point A-A' in Figure 2. For instance, in the cross-sectional structure shown in Figure 1, the lengths of the first hollowed-out region 201 and the second hollowed-out region 202 are equal.

[0059] For example, FIG3 is a layout of a pixel defining layer provided in at least one embodiment of the present disclosure. As shown in FIG3, the pixel defining layer 102 includes a pixel opening 103 and a pixel spacing portion 104. For example, FIG4 is a layout of a pixel defining layer and a first black matrix layer stacked in at least one embodiment of the present disclosure. FIG5 is an enlarged view of the area shown in the dashed box M in FIG4. As shown in FIG4 and FIG5, the pixel opening 103 is located within the corresponding first hollow area 201. In the direction of sub-pixel arrangement, i.e., in the first direction X, the pixel opening 103 and the corresponding first hollow area 201 each have a first side and a second side. That is, the pixel opening 103 has a first edge ab on the first side, and the first hollow area 201 has a first edge AB on the first side; the pixel opening 103 has a second edge cd on the second side, and the first hollow area 201 has a second edge CD on the second side. On the first side, there is a first spacing d1 between the first edge ab of the pixel opening 103 and the first edge AB of the corresponding first hollow area 201. On the second side, there is a second spacing d2 between the second edge cd of the pixel opening 103 and the second edge CD of the corresponding first hollow area 201, and the first spacing d1 and the second spacing d2 are equal. Setting the first spacing d1 and the second spacing d2 to be equal can achieve uniformity of the emitted light.

[0060] For example, in one example, the first black matrix layer 1071 extends outward relative to the pixel defining layer 102 by a distance equal to the first pitch d1 and the second pitch d2. The first pitch d1 is equal to the second pitch d2, and both the first pitch d1 and the second pitch d2 are equal to 2 micrometers, thereby making the first black matrix layer 1071 and the pixel defining layer 102 of the designed display substrate symmetrical.

[0061] For example, in one example, the first pitch d1 and the second pitch d2 are not equal, and the first black matrix layer 1071 and the pixel defining layer 102 of the display substrate do not have symmetry. However, the orthographic projections of the second black matrix layer 1073 and the first black matrix layer 1071 on the substrate 101 can be designed to overlap so that the second black matrix layer 1073 and the first black matrix layer 1071 satisfy symmetry in structure.

[0062] For example, the display substrate 100 shown in FIG. 1 further includes an encapsulation structure 203 disposed between the light-emitting element 106 and the light control structure 107. The encapsulation structure 203 includes a first inorganic encapsulation layer 109, an organic encapsulation layer 110, and a second inorganic encapsulation layer 111 stacked together. The encapsulation structure 203 may have the shape of a continuous film formed over the light-emitting and non-light-emitting areas. The first inorganic encapsulation layer 109 and the second inorganic encapsulation layer 111 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 110 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-based phenylene oxide resin. Those skilled in the art can change the number of layers, materials, and structure of the encapsulation structure 203 as needed, and the embodiments disclosed herein are not limited thereto.

[0063] For example, at the edge position, the first inorganic encapsulation layer 109 and the second inorganic encapsulation layer 111 are in contact, the materials of the first inorganic encapsulation layer 109 and the second inorganic encapsulation layer 111 are inorganic insulating materials, and the material of the organic encapsulation layer 110 is organic insulating material.

[0064] For example, as shown in Figure 1, a first buffer layer 112, a touch layer 113, and a second buffer layer 114 are disposed between the encapsulation structure 203 and the light control structure 107. The materials of the first buffer layer 112 and the second buffer layer 114 can be the same or different. The materials of the first buffer layer 112 and the second buffer layer 114 can both be inorganic insulating materials. The first buffer layer 112 and the second buffer layer 114 can protect the touch layer 113 sandwiched between them. For example, the touch layer 113 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; conventional touch layer structures can be referred to, and the embodiments disclosed herein are not limited thereto.

[0065] For example, FIG6 is a layout of a first electrode provided in at least one embodiment of the present disclosure. For example, referring to FIG1 and FIG6, the light-emitting element 106 may include a plurality of switching elements located on a substrate 101. FIG6 shows the approximate location of the light-emitting element with the first electrode 1061 as an example. In a pixel unit 300, the switching elements include first switching elements T1, T2, and T3. For example, the first switching element T1 may be located in a first light-emitting region LA1, the second switching element T2 may be located in a second light-emitting region LA2, and the third switching element T3 may be located in a third light-emitting region LA3. As another example, at least one of the first switching element T1, the second switching element T2, and the third switching element 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 with a top-gate structure. The switching element may be connected to signal lines, including but not limited to gate lines, data lines, and power lines.

[0066] For example, in the structure shown in Figure 6, 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 first direction X, and the column direction is the second direction Y. In the first direction X, multiple subpixels constitute multiple pixel units 300. Each pixel unit 300 includes a first color subpixel 301 and a second color subpixel 302 arranged in the second direction Y, and a third color subpixel 303 located on the same side of the first color subpixel 301 and the second color subpixel 302 in the first direction X, and the first direction X and the second direction Y intersect. For example, in the example shown in Figure 6, the first direction X and the second direction Y are perpendicular. The first color sub-pixel 301 and the second color sub-pixel 302 are arranged sequentially in the second direction Y, that is, in the vertical direction. The third color sub-pixel 303 is located to the right of the first color sub-pixel 301 and the second color sub-pixel 302. Overall, the planar shape of the pixel unit 300 formed by the first color sub-pixel 301, the second color sub-pixel 302 and the third color sub-pixel 303 is rectangular, so that each pixel unit can be arranged in a regular manner to maximize the area of ​​the light-emitting region.

[0067] For example, referring to Figure 6, in one example, the first color sub-pixel 301 is a red sub-pixel, the second color sub-pixel 302 is a blue sub-pixel, and the third color sub-pixel 303 is a green sub-pixel. The orthographic projection of the first main body portion 3011a of the first anode 3011 corresponding to the red sub-pixel 301 onto the substrate 101 is a first rectangle, and the orthographic projection of the third main body portion 3031a of the third anode 3031 corresponding to the green sub-pixel 303 onto the substrate 101 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.

[0068] For example, as shown in FIG6, the first main body portion 3011a of the first anode 3011 corresponds to a plurality of first pixel opening regions (not shown in FIG6), and the orthographic projection of each first pixel opening region on the substrate 101 is rectangular; the second main body portion 3031a of the third anode 3031 corresponds to a plurality of third pixel opening regions, and the orthographic projection of each third pixel opening region on the substrate 101 is rectangular. The first pixel opening region corresponds to the opening for emitting light from the first color sub-pixel 301, and the third pixel opening region corresponds to the opening for emitting light from the third color sub-pixel 303.

[0069] For example, as shown in Figure 6, the length of the side extending in the second direction Y of the first rectangle is less 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 greater than the length of the side extending in the first direction X. That is, 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 301 is a red sub-pixel, and the third color sub-pixel 303 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.

[0070] For example, in one instance, the length of the long side of the third pixel opening region corresponding to the third color sub-pixel 303 in the second direction Y 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 303 in the first direction X 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 303 onto the substrate 101 is also rectangular, and the length of the long side of the third color sub-pixel 303 in the second direction Y is approximately equal to the sum of the lengths of the sides of the first color sub-pixel 301 and the second color sub-pixel 302 in the second direction Y. The area of ​​the orthographic projection of the third color sub-pixel 303 onto the substrate 101 is greater than the area of ​​the orthographic projection of the second color sub-pixel 302 onto the substrate 101, and also greater than the area of ​​the orthographic projection of the first color sub-pixel 301 onto the substrate 101.

[0071] For example, in the structure shown in Figure 1, 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.

[0072] For example, in the first direction X, it can reduce the projection on the dashboard and reduce the difference in viewing angle of the in-vehicle screen brightness in the first direction.

[0073] For example, Figure 7 is a cross-sectional schematic diagram of a partial structure of another display substrate provided in at least one embodiment of the present disclosure. As shown in Figure 7, a planarization layer 108 and a spacer layer 205 are further disposed between the first electrode 1061 of the light-emitting element and the substrate 101. The spacer layer 205 is disposed on the side of the planarization layer 108 away from the substrate 101. The surface of the planarization layer 108 away from the substrate 101 has a groove 2041. The spacer layer 205 has a first through-hole 2051 penetrating the spacer layer 205, and the first through-hole 2051 communicates with the groove 2041 to form a partition structure 208. That is, the partition structure 208 is an isolation structure with a groove. For example, the spacer layer 205 can be a passivation layer.

[0074] For example, as shown in FIG7, a portion of the orthographic projection of the first via 2051 on the substrate 101 lies within the orthographic projection of the groove 2041 on the substrate 101, and the orthographic projection of the first via 2051 on the substrate 101 lies between two adjacent sub-pixels. The other portion of the orthographic projection of the first via 2051 on the substrate 101 does not overlap with the orthographic projection of the groove 2041 on the substrate 101. That is, in the structure shown in FIG7, at the left side of the first via 2051, the spacer layer 205 extends over the groove 2041, and at the right side of the first via 2051, a portion of the pixel spacer 104 is spaced between the pixel spacer portion 104 and the first via 2051.

[0075] For example, in one embodiment, the partition structure 208 is located on the substrate 101 between adjacent sub-pixels, and the charge generation layer in the light-emitting functional layer of the light-emitting element is disconnected at the location of the partition structure 208. Thus, by setting the partition structure 208 between adjacent sub-pixels and causing the charge generation layer in the light-emitting functional layer to be disconnected at the location of the partition structure, the display substrate can avoid crosstalk between adjacent sub-pixels caused by the highly conductive charge generation layer. It should be noted that the charge generation layer in the light-emitting functional layer is either a discontinuous structure or a non-integral structure at the disconnected location.

[0076] For example, in the display substrate provided in the embodiments of this disclosure, by providing 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, crosstalk between adjacent sub-pixels caused by the highly conductive charge generation layer is avoided. On the other hand, since this display substrate can avoid crosstalk between adjacent sub-pixels through the partition structure, it can increase pixel density while employing a tandem EL design. Therefore, this display substrate can have advantages such as long lifespan, low power consumption, high brightness, and high resolution.

[0077] It should be noted that in some examples, "adjacent subpixels" means that no other subpixels are set between two subpixels.

[0078] It should also be noted that in some examples, the line connecting the brightness centers of two adjacent sub-pixels passes through the partition structure. Because the charge generation layer has a smaller dimension and lower resistance in the direction of this line's extension, charge can easily transfer from one of the two adjacent sub-pixels through the charge generation layer along the extension direction of the line to the other. Therefore, by having the line pass through the partition structure, the display substrate effectively blocks the shortest path of charge propagation, thereby effectively avoiding crosstalk between adjacent sub-pixels. It should be noted that the brightness center of each sub-pixel can be the geometric center of the effective light-emitting area of ​​that sub-pixel. Of course, embodiments of this disclosure include, but are not limited to, the brightness center of each sub-pixel can also be the location of the maximum luminous intensity of that sub-pixel.

[0079] For example, as shown in FIG7, the pixel defining layer 102 includes a plurality of pixel openings 103 and pixel spacing openings 1041. The plurality of pixel openings 103 correspond one-to-one with a plurality of sub-pixels to define the effective light-emitting areas of the plurality of sub-pixels. The pixel openings 103 are configured to expose a first electrode 1061, such as an anode, so that the first electrode 1061 contacts the subsequently formed light-emitting functional layer. The pixel spacing openings 1041 are located between adjacent first electrodes 1061, and at least a portion of the partition structure 208 is located within the pixel spacing openings 1041. Thus, the display substrate can avoid fabricating the partition structure on the pixel defining layer, thereby avoiding increasing the thickness of the display substrate. Of course, embodiments of this disclosure include, but are not limited to, the pixel defining layer may not have the aforementioned pixel spacing openings, so that the partition structure can be directly disposed on the pixel defining layer, or the partition structure can be fabricated using the pixel defining layer. For example, as shown in FIG7, the pixel spacing opening 1041, the first through-hole 2051, and the groove 2041 are interconnected.

[0080] For example, as shown in Figure 7, the area of ​​the orthographic projection of the groove 2041 onto the substrate 101 is smaller than the area of ​​the orthographic projection of the pixel spacing opening 1041 onto the substrate 101, and the orthographic projection of the groove 2041 onto the substrate 101 lies within the orthographic projection of the pixel spacing opening 1041 onto the substrate. In the cross-sectional structure shown in Figure 7, the cross-sectional shape of the groove 2041 is an isosceles trapezoid, and the cross-sectional shape of the pixel spacing opening 1041 is an isosceles trapezoid. The angle between the hypotenuse and the base of the isosceles trapezoid corresponding to the pixel spacing opening 1041 is smaller than the angle between the hypotenuse and the base of the isosceles trapezoid corresponding to the groove 2041. That is, the slope angle between the hypotenuse and the base of the isosceles trapezoid corresponding to the groove 2041 is greater than the slope angle between the hypotenuse and the base of the isosceles trapezoid corresponding to the pixel spacing opening 1041. Therefore, the inclined surface in the groove 2041 is steeper than that in the pixel spacing opening 1041, making it easier for the subsequently formed organic light-emitting layer to break at the location of the partition structure.

[0081] For example, as shown in Figure 7, the orthographic projection of the first through hole 2051 on the substrate 101 and the orthographic projection of the groove 2041 on the substrate 101 are both located within the orthographic projection of the pixel spacing opening 1041 on the substrate 101. That is, the area of ​​the orthographic projection of the pixel spacing opening 1041 on the substrate 101 is greater than the area of ​​the orthographic projection of the first through hole 2051 on the substrate 101, and is also greater than the area of ​​the orthographic projection of the groove 2041 on the substrate 101.

[0082] For example, the material of the pixel defining layer 102 may include organic materials, such as polyimide, acrylic, or polyethylene terephthalate.

[0083] For example, as shown in FIG7, the thickness of the pixel defining layer 102 on the main surface perpendicular to the substrate 101 is 1 micrometer to 3 micrometers. For example, in one example, the thickness of the pixel defining layer 102 on the main surface perpendicular to the substrate 101 is 1.2 micrometers to 1.5 micrometers.

[0084] For example, in the structure shown in FIG7, the groove 2041 has a depth of 0.1 micrometer to 0.8 micrometer on the main surface perpendicular to the substrate 101.

[0085] For example, the thickness of the spacer layer 205 on the main surface perpendicular to the substrate 101 is 10 angstroms to 2500 angstroms. For example, in one example, the thickness of the spacer layer 205 on the main surface perpendicular to the substrate 101 is 500 angstroms to 1500 angstroms.

[0086] It should be noted that the embodiments of this disclosure do not limit the thickness of the above-mentioned layer structures. As long as the first electrode 1061 can be electrically connected to the pixel driving circuit 206 and the sub-pixels of different colors can be separated, the design of the thickness of the above-mentioned layer structures can make the formed isolation structure better separate the sub-pixels of different colors when preparing the sub-pixels of different colors of the display substrate, so as to avoid crosstalk between pixels.

[0087] For example, in one example, the ratio of the depth of the groove 2041 on the main surface perpendicular to the substrate 101 to the thickness of the pixel defining layer 102 on the main surface perpendicular to the substrate 101 is in the range of 1 / 5 to 2 / 3. For example, the ratio of the depth of the groove 2041 on the main surface perpendicular to the substrate 101 to the thickness of the pixel defining layer 102 on the main surface perpendicular to the substrate 101 is 1 / 5, 2 / 5, 1 / 2, 3 / 5 and 2 / 3, etc. The embodiments of this disclosure do not limit this.

[0088] For example, FIG8 is a layout of a single-layer structure of a spacer layer provided in at least one embodiment of the present disclosure, and FIG9 is a layout of a stack of a spacer layer and a first electrode provided in at least one embodiment of the present disclosure. As shown in FIG7, FIG8 and FIG9, the orthographic projection of the first electrode 1061 on the substrate 101 is located within the orthographic projection of the spacer layer 205 on the substrate 101, and the planar shape of the spacer layer 205 is the same as or substantially the same as the planar shape of the first electrode 1061.

[0089] For example, FIG10 is a layout of the stack of the first electrode and the pixel defining layer provided in at least one embodiment of the present disclosure. As shown in FIG10, the elongated filled portion represents the portion of the pixel defining layer that has been removed, and the remaining blank area is the portion of the pixel defining layer that has been retained. As shown in FIG10, the pixel spacing opening 1041 includes a first pixel spacing opening 1041a extending in the second direction Y. The first pixel spacing opening 1041a is between the third color sub-pixel 303 and the second color sub-pixel 302. In the first direction X, the minimum distance d3 between the first pixel spacing opening 1041a and the nearest third color sub-pixel 303 is less than the minimum distance d4 between the first pixel spacing opening 1041a and the nearest second color sub-pixel 302.

[0090] For example, as shown in FIG10, the pixel spacing opening 1041 further includes a second pixel spacing opening 1041b extending in the first direction X. The second pixel spacing opening 1041b is between the first color sub-pixel 301 and the second color sub-pixel 302, and in the second direction Y, the minimum distance d5 between the second pixel spacing opening 1041b and the nearest first color sub-pixel 301 is less than the minimum distance d6 between the second pixel spacing opening 1041b and the nearest second color sub-pixel 302.

[0091] For example, as shown in Figure 10, in the first direction X, the minimum distance between the first pixel spacing opening 1041a and the nearest third color sub-pixel 303 is 4.5 micrometers to 7 micrometers, and the minimum distance between the first pixel spacing opening 1041a and the nearest second color sub-pixel 302 is 8.5 micrometers to 13 micrometers; in the second direction Y, the minimum distance between the second pixel spacing opening 1041b and the nearest first color sub-pixel 301 is 3.5 micrometers to 6 micrometers, and the minimum distance between the second pixel spacing opening 1041b and the nearest second color sub-pixel 302 is 5.5 micrometers to 10 micrometers.

[0092] For example, in one instance, in the first direction X, the minimum distance between the first pixel spacing opening 1041a and the nearest third color sub-pixel 303 is 6 micrometers, and the minimum distance between the first pixel spacing opening 1041a and the nearest second color sub-pixel 302 is 10 micrometers; in the second direction Y, the minimum distance between the second pixel spacing opening 1041b and the nearest first color sub-pixel 301 is 5 micrometers, and the minimum distance between the second pixel spacing opening 1041b and the nearest second color sub-pixel 302 is 7 micrometers.

[0093] For example, in another example, in the first direction X, the minimum distance between the first pixel spacing opening 1041a and the nearest third color sub-pixel 303 is 5.5 micrometers, and the minimum distance between the first pixel spacing opening 1041a and the nearest second color sub-pixel 302 is 11 micrometers; in the second direction Y, the minimum distance between the second pixel spacing opening 1041b and the nearest first color sub-pixel 301 is 4.5 micrometers, and the minimum distance between the second pixel spacing opening 1041b and the nearest second color sub-pixel 302 is 8.5 micrometers.

[0094] It should be noted that, although not marked in Figure 10, a third pixel gap opening is also provided between the first color sub-pixel 301 and the third color sub-pixel 303. This third pixel gap opening extends in the second direction Y, and in the first direction X, the minimum distance between the third pixel gap opening and the nearest third color sub-pixel 303 is less than the minimum distance between the third pixel gap opening and the nearest first color sub-pixel. The minimum distance between the third pixel gap opening and the nearest third color sub-pixel 303 is equal to the minimum distance d3 between the first pixel gap opening 1041a and the nearest third color sub-pixel 303, and the minimum distance between the third pixel gap opening and the nearest first color sub-pixel is equal to the minimum distance d4 between the first pixel gap opening 1041a and the nearest second color sub-pixel 302.

[0095] For example, Figure 11 is a schematic diagram of a planar structure of a pixel unit group provided in at least one embodiment of the present disclosure. Referring to Figures 6 and 11, each pixel unit 300 includes a first color sub-pixel 301 and a second color sub-pixel 302 arranged in the second direction Y, and a third color sub-pixel 303 located on the same side of the first color sub-pixel 301 and the second color sub-pixel 302 in the first direction X. Two adjacent pixel units 300 in the first direction X constitute a pixel unit group 400, and two adjacent pixel unit groups 400 in the second direction constitute a repeating unit 500. In a repeating unit 500, the pixel units located in the first row and arranged sequentially in the first direction X are the first pixel unit 300a and the second pixel unit 300b, and the pixel units located in the second row and arranged sequentially in the first direction X are the third pixel unit 300c and the fourth pixel unit 300d. A first spacer 601 is provided at the edge of the repeating unit extending in the second direction Y and at the edge of the second pixel unit 300b. A second spacer 602 is provided at the junction of the third pixel unit 300c and the fourth pixel unit 300d. By placing the first spacer 601 and the second spacer 602 at the edge of the repeating unit 500, the vapor deposition rate during the formation of each organic layer can be controlled, and crosstalk between sub-pixels of different colors in the organic light-emitting diode can be improved.

[0096] For example, FIG12 is a layout of a pixel unit group provided in at least one embodiment of the present disclosure. As shown in FIG12, since the gap between the third color sub-pixel 303 of the second pixel unit 300b and the third color sub-pixel 303 of the fourth pixel unit 300d is relatively large, when the first spacer 601 is disposed at the gap between the third color sub-pixel 303 of the second pixel unit 300b and the third color sub-pixel 303 of the fourth pixel unit 300d, the area on the display substrate can be fully utilized, thereby increasing the pixel density. Moreover, since the gap between the third color sub-pixel 303 of the third pixel unit 300c and the second color sub-pixel 303 of the fourth pixel unit 300d is relatively large, when the second spacer 602 is disposed at the gap between the third color sub-pixel 303 of the third pixel unit 300c and the second color sub-pixel 303 of the fourth pixel unit 300d, the area on the display substrate can also be fully utilized, thereby increasing the pixel density. In addition, placing the first spacer 601 and the second spacer 602 at the edge of a repeating unit facilitates the fabrication of each layer structure.

[0097] For example, in the structure shown in Figure 12, the cross-sectional shape of the first spacer 601 and the second spacer 602 is circular or near-circular, and the diameter of the circle or the equivalent diameter of the near-circular circle is in the range of 10 micrometers to 15 micrometers. The first spacer 601 and the second spacer 602 within this size range can ensure that the display area has the largest area while providing stable support.

[0098] For example, referring to Figures 10 and 12, the second color sub-pixel 302, that is, the second anode 3021 corresponding to the blue sub-pixel, includes a second main body portion 3021a and an extension portion 3021b extending from the second main body portion 3021a to the space between two adjacent green sub-pixels in the second direction Y. A through-hole structure 304 is provided at a position of the extension portion 3021b away from the second main body portion 3021a. At least a portion of the through-hole structure 304 is disposed adjacent to the first spacer 601 or the second spacer 602, and at least a portion of the through-hole structure 304 and the first spacer 601 or the second spacer 602 are spaced apart from each other.

[0099] For example, referring to Figures 10 and 12, the width of the first main body portion 3011a of the first anode 3011 corresponding to the first color sub-pixel 301, i.e. the red sub-pixel, in the first direction X ranges from 10 micrometers to 20 micrometers, and the length in the second direction Y ranges from 8 micrometers to 10 micrometers.

[0100] For example, referring to Figures 10 and 12, the width of the second main body portion 3021a of the second anode 3021 corresponding to the second color sub-pixel 302, i.e. the blue sub-pixel, in the first direction X ranges from 10 micrometers to 20 micrometers, and the length in the second direction Y ranges from 20 micrometers to 50 micrometers.

[0101] For example, referring to Figures 10 and 12, the third main body portion 3031a of the third color sub-pixel 303, that is, the third anode 3031 corresponding to the green sub-pixel, has a width ranging from 15 micrometers to 25 micrometers in the first direction X, and a length ranging from 30 micrometers to 60 micrometers in the second direction Y.

[0102] For example, referring to Figures 10 and 12, the width of the first pixel opening region 3012 corresponding to the first main body portion 3011a in the first direction X ranges from 5 micrometers to 15 micrometers, and the length in the second direction Y ranges from 3.5 micrometers to 10 micrometers. It should be noted that although the second pixel opening region is not shown in Figure 12, it can be designed as needed.

[0103] For example, in one example, the width of the first pixel opening region 3012 corresponding to the first main body portion 3011a in the first direction X is 5 micrometers, 7 micrometers, 8 micrometers, 9 micrometers, 10 micrometers, 11 micrometers, 12 micrometers or 15 micrometers, and the length in the second direction Y is 4 micrometers, 5 micrometers, 6 micrometers, 7 micrometers, 8 micrometers, 9 micrometers or 10 micrometers.

[0104] It should be noted that the widths and lengths of the first main body portion 3011a, the second main body portion 3021a, and the third main body portion 3031a, as well as the widths and lengths of the first pixel opening region 3012 and the third pixel opening region 3032, are merely illustrative examples. The widths and lengths of the first main body portion 3011a, the second main body portion 3021a, and the third main body portion 3031a can be determined according to the resolution of the display substrate. The area ratios of the first main body portion 3011a, the second main body portion 3021a, and the third main body portion 3031a can vary depending on the display substrate. In one example, the area ratio of the first main body portion 3011a, the second main body portion 3021a, and the third main body portion 3031a is 1:2.5:1.7.

[0105] Figure 13 is a cross-sectional structural schematic diagram of a light-emitting element provided in at least one embodiment of the present disclosure. Referring to Figures 7 and 13, the light-emitting element 106 includes a first electrode 1061, a second electrode 1062, and a light-emitting functional layer 1063 sandwiched between the first electrode 1061 and the second electrode 1062. The first electrode 1061 is located on the side of the second electrode 1062 near the substrate 101, and a pixel driving circuit 206 is disposed between the planarization layer 108 and the substrate 101. The first electrode 1061 and the pixel driving circuit 206 are electrically connected through a via structure 204 in the planarization layer 108.

[0106] For example, the pixel driving circuit 206 is configured to drive the light-emitting element 106 to emit light. The light-emitting functional layer 1063 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 for assisting light emission, such as: hole injection layer, hole transport layer, electron injection layer, electron transport layer, electron blocking layer, and hole blocking layer, etc.

[0107] For example, the first electrode 1061 can be an anode, and the second electrode 1062 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.

[0108] For example, the pixel driving circuit 206 can be electrically connected to the first electrode 1061 in the correspondingly configured light-emitting element 106, thereby driving the light-emitting element 106 to emit light. Multiple sub-pixels 200 can share a second electrode 132, that is, multiple sub-pixels 200 can share a cathode.

[0109] For example, as shown in Figure 7, the material of the planarization layer 108 can be an organic material, such as one or a combination of resin, acrylic or polyethylene terephthalate, polyimide, polyamide, polycarbonate, epoxy resin, etc.

[0110] For example, in one example, the thickness of the planarization layer 108 is 1 micrometer to 3 micrometers. In another example, the thickness of the planarization layer 108 is 1.5 micrometers to 2 micrometers.

[0111] For example, in some examples, other film layers are disposed between the planarization layer 108 and the substrate 101. 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.

[0112] At least one embodiment of this disclosure also provides a display device. FIG14 is a schematic diagram of a display device provided in at least one embodiment of this disclosure. As shown in FIG14, the display device 700 further includes a display substrate 100. When this display device is applied to display products such as automotive displays, the automotive display product can display normally and reduce projection phenomena on the dashboard to avoid affecting road condition judgment. Moreover, the display device can reduce the process of forming a dedicated external light control structure while meeting normal display requirements, so that the light control structure can be integrated into the display substrate included in the display device, thereby making the final display device thinner and lighter and reducing production costs. In addition, the display substrate included in the 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. Thus, the display device including this display substrate can also avoid crosstalk between adjacent sub-pixels, thus having a higher product yield and higher display quality.

[0113] 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.

[0114] 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.

[0115] The display substrate and display device provided in at least one embodiment of this disclosure have at least one of the following beneficial technical effects:

[0116] (1) When the display device provided in at least one embodiment of the present disclosure is applied to display products such as vehicle display products, the vehicle display product can display normally and reduce the projection phenomenon on the dashboard to avoid affecting the judgment of road conditions. Moreover, the display device can reduce the process of forming an external light control structure under the condition of meeting normal display, so that the light control structure can be integrated into the display substrate included in the display device, thereby making the final display device structure thinner and lighter and with lower production cost.

[0117] (2) The display substrate provided in at least one embodiment of this disclosure avoids crosstalk between adjacent sub-pixels caused by the highly conductive charge generation layer by providing 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. As a result, the display device including this display substrate can also avoid crosstalk between adjacent sub-pixels, thus having a higher product yield and higher display quality.

[0118] The following points need to be explained:

[0119] (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.

[0120] (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.

[0121] (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.

[0122] 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. The light control structure disposed on the light-emitting element 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 projection of the light-emitting layer of the light-emitting element on the substrate do not overlap.

2. The display substrate according to claim 1, 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 corresponding light-emitting elements.

3. The display substrate according to claim 2, wherein, 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.

4. The display substrate according to claim 2 or 3, 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 orthogonal projection of the pixel opening onto the substrate is located in the first hollow area. Within the orthographic projection on the substrate, and located within the orthographic projection of the second cutout area on the substrate.

5. The display substrate according to claim 4, 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.

6. The display substrate according to any one of claims 1 to 5, 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.

7. The display substrate according to claim 6, wherein, A first buffer layer, a touch layer, and a second buffer layer are disposed between the encapsulation structure and the light control structure.

8. The display substrate according to any one of claims 1 to 7, 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 a second 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 a first direction, wherein the first direction and the second direction intersect.

9. The display substrate according to claim 8, 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 orthographic projection of the first main body of the first anode corresponding to the red sub-pixel onto the substrate is a first rectangle, and the orthographic projection of the third main body of the third anode corresponding to the green sub-pixel onto the substrate is a third rectangle.

10. The display substrate according to claim 9, wherein, The first main body portion of the first anode 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 corresponds to a plurality of third pixel opening regions, and the shape of the orthographic projection of each third pixel opening region on the substrate is rectangular.

11. The display substrate according to claim 9, 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 greater than the length of the side extending in the first direction.

12. The display substrate according to claim 11, wherein, The length of the long side of the third pixel opening region corresponding to the third color sub-pixel in the second direction 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 in the first direction is greater than 5 micrometers and less than or equal to 10 micrometers.

13. The display substrate according to any one of claims 8 to 12, wherein, A planarization layer and a spacer layer are further disposed between the light-emitting element and the substrate, and the spacer layer is disposed on the side of the planarization layer away from the substrate. The planarization layer has a groove on the surface away from the substrate, the spacer layer has a first through-hole penetrating the spacer layer, the pixel spacer includes a pixel spacer opening, and the first through-hole, the groove and the pixel spacer opening are connected.

14. The display substrate according to claim 13, wherein, A portion of the orthographic projection of the first through-hole on the substrate is located within the orthographic projection of the groove on the substrate. The orthographic projection of the first through-hole on the substrate is located between two adjacent sub-pixels. Both the orthographic projection of the first through-hole on the substrate and the orthographic projection of the groove on the substrate are located within the orthographic projection of the pixel spacing opening on the substrate.

15. The display substrate according to claim 14, wherein, The pixel spacing opening includes a first pixel spacing opening extending in the second direction, the first pixel spacing opening being between the third color sub-pixel and the second color sub-pixel, and in the first direction, the minimum distance between the first pixel spacing opening and the nearest third color sub-pixel is less than the minimum distance between the first pixel spacing opening and the nearest second color sub-pixel; The pixel spacing opening further includes a second pixel spacing opening extending in the first direction, the second pixel spacing opening being between the first color sub-pixel and the second color sub-pixel, and in the second direction, the minimum distance between the second pixel spacing opening and the nearest first color sub-pixel is less than the minimum distance between the second pixel spacing opening and the nearest second color sub-pixel.

16. The display substrate according to claim 15, wherein, In the first direction, the minimum distance between the first pixel spacing opening and the nearest third color sub-pixel is 4.5 micrometers to 7 micrometers, and the minimum distance between the first pixel spacing opening and the nearest second color sub-pixel is 8.5 micrometers to 13 micrometers; In the second direction, the minimum distance between the second pixel spacing opening and the nearest first color sub-pixel is 3.5 micrometers to 6 micrometers, and the minimum distance between the second pixel spacing opening and the nearest second color sub-pixel is 5.5 micrometers to 10 micrometers.

17. The display substrate according to claim 16, wherein, The area of ​​the orthogonal projection of the groove on the substrate is smaller than the area of ​​the orthogonal projection of the pixel spacing opening on the substrate, and the orthogonal projection of the groove on the substrate is located within the orthogonal projection of the pixel spacing opening on the substrate.

18. The display substrate according to claim 13, wherein, The pixel defining layer has a thickness of 1 micrometer to 3 micrometers on the main surface perpendicular to the substrate, the groove has a depth of 0.1 micrometer to 0.8 micrometers on the main surface perpendicular to the substrate, and the spacer layer has a thickness of 10 angstroms to 2500 angstroms on the main surface perpendicular to the substrate.

19. The display substrate according to claim 13, wherein, The ratio of the depth of the groove on the main surface perpendicular to the substrate to the thickness of the pixel defining layer on the main surface perpendicular to the substrate is in the range of 1 / 5 to 2 / 3.

20. The display substrate according to claim 8, wherein, Two adjacent pixel units in the first direction constitute a pixel unit group, and two adjacent pixel unit groups in the second direction constitute a repeating unit; In the repeating unit, the pixel units located in the first row and arranged sequentially in the first direction are the first pixel unit and the second pixel unit, and the pixel units located in the second row and arranged sequentially in the first direction are the third pixel unit and the fourth pixel unit. A first spacer is provided at the edge of the repeating unit extending in the second direction and at the edge of the second pixel unit, and a second spacer is provided at the junction of the third pixel unit and the fourth pixel unit in the repeating unit.

21. The display substrate according to claim 20, wherein, The cross-sectional shape of both the first spacer and the second spacer is circular or near-circular, and the diameter of the circle or the equivalent diameter of the near-circular spacer is in the range of 10 micrometers to 15 micrometers.

22. The display substrate according to claim 10, wherein, The second anode corresponding to the blue sub-pixel includes a second main body and an extension extending from the second main body to between two adjacent green sub-pixels in the second direction. A via structure is provided at a position away from the second main body of the extension. At least a portion of the via structure is disposed adjacent to the first spacer or the second spacer and spaced apart from each other.

23. The display substrate according to claim 22, wherein, The width of the first main body portion of the first anode in the first direction ranges from 10 micrometers to 20 micrometers, and the length in the second direction ranges from 8 micrometers to 10 micrometers; The width of the second main body portion of the second anode in the first direction ranges from 10 micrometers to 20 micrometers, and the length in the second direction ranges from 20 micrometers to 50 micrometers; The width of the third main body portion of the third anode in the first direction ranges from 15 micrometers. The length in the second direction ranges from 30 to 60 micrometers, and is between 25 micrometers.

24. The display substrate according to claim 23, wherein, The width of the first pixel opening region corresponding to the first main body portion in the first direction ranges from 5 micrometers to 15 micrometers, and the length in the second direction ranges from 3.5 micrometers to 10 micrometers.

25. The display substrate according to any one of claims 13 to 24, wherein, The light-emitting element includes a first electrode, a second electrode, and a light-emitting functional layer sandwiched between the first electrode and the second electrode. The first electrode is located on the side of the second electrode closer to the substrate, and 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.

26. A display device comprising a display substrate according to any one of claims 1 to 25.

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