Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises a base substrate (101) and a plurality of light-emitting units, wherein the plurality of light-emitting units include at least a first light-emitting unit (1) emitting light of a first color, a second light-emitting unit (2) emitting light of a second color, a third light-emitting unit (3) emitting light of a third color, and a fourth light-emitting unit (4) emitting light of a fourth color; the first light-emitting unit (1), the second light-emitting unit (2) and the third light-emitting unit (3) emit light in a normal display mode; the second light-emitting unit (2), the third light-emitting unit (3) and the fourth light-emitting unit (4) emit light in a night-vision display mode, the first light-emitting unit (1) does not emit light in the night-vision display mode, and the first color is red; and the first light-emitting unit (1) has a first light-emitting region, the fourth light-emitting unit (4) has a fourth light-emitting region, and the area of the fourth light-emitting region is less than the area of the first light-emitting region.

Description

Display substrate and display device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 29, 2024, with application number 202410232708.3 and invention name “A display substrate and display device”, the contents of which should be understood as incorporated into this application by reference. Technical Field

[0002] This article relates to, but is not limited to, the field of display technology, and in particular to a display substrate and a display device. Background Art

[0003] With the development of active-matrix organic light emitting diode (AMOLED) displays, the application scenarios are gradually increasing, such as mobile terminals, car displays, and airborne displays. For the scenario of using AMOLED for airborne displays, AMOLED is required to meet the requirements of night vision compatibility on the basis of meeting the requirements of conventional use. Night vision compatibility of airborne displays generally refers to the use of night vision goggles to enhance the light outside the cabin when pilots perform night flights and reconnaissance missions at night so that pilots can observe the situation outside the cabin. During the use of night vision goggles, the lighting system and display system in the cabin must not affect the normal operation of the night vision goggles, and it must be ensured that the pilots can see the instruments, indicator lights and display information in the cabin with their naked eyes. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] Embodiments of the present disclosure provide a display substrate and a display device.

[0006] In one aspect, an embodiment of the present disclosure provides a display substrate, comprising a base substrate and a plurality of pixel units located on the base substrate; at least one pixel unit comprises a plurality of light-emitting units, the plurality of light-emitting units comprising at least a first light-emitting unit emitting a first color light, a second light-emitting unit emitting a second color light, a third light-emitting unit emitting a third color light, and a fourth light-emitting unit emitting a fourth color light; the first light-emitting unit having a first light-emitting area, the second light-emitting unit having a second light-emitting area, the third light-emitting unit having a third light-emitting area, and the fourth light-emitting unit having a fourth light-emitting area;

[0007] The first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are configured to emit light in a normal display mode; the second light-emitting unit, the third light-emitting unit, and the fourth light-emitting unit are configured to emit light in a night vision display mode, and the first light-emitting unit is configured not to emit light in the night vision display mode, and the first color is red;

[0008] The first light-emitting region has a first light-emitting area, the fourth light-emitting region has a fourth light-emitting area, and the fourth light-emitting area is smaller than the first light-emitting area.

[0009] In an exemplary embodiment, a ratio of the first light-emitting area to the fourth light-emitting area ranges from 1:0.1 to 1:0.5.

[0010] In an exemplary embodiment, the arrangement of the plurality of first light-emitting areas, the plurality of second light-emitting areas, the plurality of third light-emitting areas, and the plurality of fourth light-emitting areas satisfies one of the following arrangement forms:

[0011] First arrangement form: the first light-emitting area, the second light-emitting area, and the third light-emitting area are alternately arranged along a first direction, and the second light-emitting area and the fourth light-emitting area are alternately arranged along a second direction;

[0012] Second arrangement form: the first light-emitting areas and the third light-emitting areas are alternately arranged along the first direction, the second light-emitting areas and the fourth light-emitting areas are alternately arranged along the first direction, the first light-emitting areas and the second light-emitting areas are alternately arranged along the second direction, and the third light-emitting areas and the fourth light-emitting areas are alternately arranged along the second direction;

[0013] A third arrangement form: the first light-emitting area, the fourth light-emitting area, the third light-emitting area, and the fourth light-emitting area are alternately arranged in sequence along the first direction, and a plurality of second light-emitting areas are arranged in sequence along the first direction; the fourth light-emitting area and the second light-emitting area are alternately arranged along the second direction, and the first light-emitting area and the third light-emitting area are alternately arranged along the second direction;

[0014] Fourth arrangement form: the first light-emitting areas and the third light-emitting areas are alternately arranged in sequence along the first direction, and the first light-emitting areas, the fourth light-emitting areas, and the third light-emitting areas are alternately arranged in sequence along the second direction, and a plurality of second light-emitting areas are arranged in sequence along the second direction;

[0015] A fifth arrangement form: the third light-emitting area, the first light-emitting area, and two second light-emitting areas are alternately arranged along the first direction, two second light-emitting areas are arranged along the second direction, and a plurality of fourth light-emitting areas are arranged along the second direction;

[0016] The plane formed by the intersection of the first direction and the second direction is parallel to the plane where the base substrate is located.

[0017] In an exemplary embodiment, in at least one pixel unit, the orthographic projections of the first light-emitting area, the second light-emitting area, the third light-emitting area, and the fourth light-emitting area on the plane where the substrate is located do not overlap; a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a first line, and a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is a second line, and the first line is parallel to the second line.

[0018] In an exemplary embodiment, the at least one pixel unit includes at least one first pixel unit; in the first pixel unit, a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a first straight line, a line connecting the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located is a second straight line, a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located is a third straight line, and the first straight line, the second straight line and the third straight line intersect to form a triangle, and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is located within the triangle.

[0019] In an exemplary embodiment, the center of the orthographic projection of the fourth light emitting area on the plane where the base substrate is located coincides with the center of the triangle.

[0020] In an exemplary embodiment, the at least one pixel unit further includes at least one second pixel unit; in the second pixel unit, a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a fourth straight line, a line connecting the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located is a fifth straight line, and a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located is a sixth straight line; the fourth straight line, the fifth straight line, and the sixth straight line intersect to form a triangle, and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is located within the triangle;

[0021] The first straight line is parallel to the fifth straight line, the second straight line is parallel to the fourth straight line, and the third straight line is parallel to the sixth straight line.

[0022] In an exemplary embodiment, a plurality of the first pixel units and a plurality of the second pixel units are alternately arranged in sequence along the first direction.

[0023] In an exemplary embodiment, each of the pixel units includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, the first sub-pixel includes a first light-emitting unit, the second sub-pixel includes a second light-emitting unit, the third sub-pixel includes a third light-emitting unit, and the fourth sub-pixel includes a fourth light-emitting unit; the plurality of pixel units are arranged sequentially along a first direction;

[0024] Part of the sub-pixels of two adjacent pixel units are shared.

[0025] In an exemplary embodiment, the shared sub-pixel includes at least one of the first sub-pixel, the third sub-pixel, and the fourth sub-pixel.

[0026] In an exemplary embodiment, the plurality of pixel units include at least a third pixel unit, a fourth pixel unit, and a fifth pixel unit arranged in sequence along a first direction; the third pixel unit and the fourth pixel unit share the third sub-pixel, and the fourth pixel unit and the fifth pixel unit share the first sub-pixel.

[0027] In an exemplary embodiment, the plurality of pixel units include at least a sixth pixel unit, a seventh pixel unit, and an eighth pixel unit arranged in sequence along the first direction; the sixth pixel unit and the seventh pixel unit share the third sub-pixel, and the seventh pixel unit and the eighth pixel unit share the first sub-pixel and the fourth sub-pixel.

[0028] In an exemplary embodiment, each of the pixel units includes one first sub-pixel, two second sub-pixels, one third sub-pixel, and one fourth sub-pixel.

[0029] In an exemplary embodiment, the shared sub-pixel includes at least one of the first sub-pixel, the third sub-pixel, and the fourth sub-pixel.

[0030] In an exemplary embodiment, there is a first minimum distance between the orthographic projection of the first light-emitting area on the plane where the substrate substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate substrate is located, there is a second minimum distance between the orthographic projection of the second light-emitting area on the plane where the substrate substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate substrate is located, and there is a third minimum distance between the orthographic projection of the third light-emitting area on the plane where the substrate substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate substrate is located; wherein at least two of the first minimum distance, the second minimum distance and the third minimum distance are equal.

[0031] In an exemplary embodiment, the at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; the first sub-pixel includes the first light-emitting unit and has a first microcavity length H1; the second sub-pixel includes the second light-emitting unit and has a second microcavity length H2; the third sub-pixel includes the third light-emitting unit and has a third microcavity length H3; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein H1 is greater than H4, H4 is greater than H2, and H2 is greater than H3.

[0032] In an exemplary embodiment, the first light-emitting unit includes a first light-emitting device, and the first light-emitting device includes a first organic light-emitting layer; the second light-emitting unit includes a second light-emitting device, and the second light-emitting device includes a second organic light-emitting layer; the third light-emitting unit includes a third light-emitting device, and the third light-emitting device includes a third organic light-emitting layer; the fourth light-emitting unit includes a fourth light-emitting device, and the fourth light-emitting device includes a fourth organic light-emitting layer; along a direction perpendicular to the plane of the substrate, the first organic light-emitting layer has a first size L1, and the second organic light-emitting layer has a second size L2, and the third organic light-emitting layer has a third size L3, and the fourth organic light-emitting layer has a fourth size L4; wherein L1 is greater than L4, and L4 is greater than L2, and L2 is greater than L3.

[0033] In an exemplary embodiment, the first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence, and the first electrode is closer to the base substrate than the second electrode; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode;

[0034] Along a direction perpendicular to the plane of the substrate, the first electrode has a first thickness h1, and the seventh electrode has a seventh thickness h7, wherein h1 is greater than or equal to h7.

[0035] In an exemplary embodiment, the number of layers of the seventh electrode film is smaller than the number of layers of the first electrode film.

[0036] In an exemplary embodiment, the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode; wherein the material of the seventh electrode includes at least one metal material other than silver.

[0037] In an exemplary embodiment, the at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; the first sub-pixel includes the first light-emitting unit and has a first microcavity length H1; the second sub-pixel includes the second light-emitting unit and has a second microcavity length H2; the third sub-pixel includes the third light-emitting unit and has a third microcavity length H3; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein H1 is equal to H4, H4 is greater than H2, and H2 is greater than H3.

[0038] In an exemplary embodiment, the first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence, and the first electrode is closer to the base substrate than the second electrode; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode; wherein the first electrode and the seventh electrode are the same-layer structure.

[0039] In an exemplary embodiment, the first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the first light-emitting device and the fourth light-emitting device emit light of the same color;

[0040] The fourth light-emitting unit also includes a fourth color filter, which is located on a side of the fourth light-emitting device away from the base substrate. The fourth color filter and the fourth light-emitting area at least partially overlap in their orthographic projection on the plane where the base substrate is located, and the fourth color filter is configured to make the fourth light-emitting unit emit a fourth color light.

[0041] In an exemplary embodiment, the first light emitting device and the fourth light emitting device both emit red light.

[0042] In an exemplary embodiment, the at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein the fourth microcavity length H4 is equal to a non-integer multiple of the peak wavelength of the fourth color light; and the peak wavelength range of the fourth color light is 525 nanometers to 585 nanometers.

[0043] In an exemplary embodiment, within the same pixel unit, a minimum distance between edges of orthographic projections of two adjacent areas among the first light-emitting area, the second light-emitting area, the third light-emitting area, and the fourth light-emitting area on the plane where the substrate is located is between 15 micrometers and 25 micrometers.

[0044] In an exemplary embodiment, the first light-emitting unit includes a first color filter and a first light-emitting device, the second light-emitting unit includes a second color filter and a second light-emitting device, the third light-emitting unit includes a third color filter and a third light-emitting device, and the fourth light-emitting unit includes a fourth color filter and a fourth light-emitting device;

[0045] The first color filter is located on a side of the first light-emitting device away from the base substrate, and the first color filter and the first light-emitting area at least partially overlap in an orthographic projection on a plane where the base substrate is located, and the first color filter is configured to cause the first light-emitting unit to emit light of a first color;

[0046] The second color filter is located on a side of the second light-emitting device away from the base substrate, and the second color filter and the second light-emitting area at least partially overlap in an orthographic projection on a plane where the base substrate is located, and the second color filter is configured to cause the second light-emitting unit to emit a second color light;

[0047] The third color filter is located on a side of the third light-emitting device away from the base substrate, and the orthographic projections of the third color filter and the third light-emitting region on the plane where the base substrate is located at least partially overlap, and the third color filter is configured to cause the third light-emitting unit to emit a third color light;

[0048] The fourth color filter is located on a side of the fourth light-emitting device away from the base substrate, and the fourth color filter and the fourth light-emitting area at least partially overlap in their orthographic projection on the plane where the base substrate is located, and the fourth color filter is configured to make the fourth light-emitting unit emit fourth color light.

[0049] In an exemplary embodiment, the orthographic projection of an edge of the first color filter on the plane where the base substrate is located surrounds the orthographic projection of an edge of the first light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns;

[0050] The orthographic projection of the edge of the second color filter on the plane where the base substrate is located surrounds the orthographic projection of the edge of the second light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns;

[0051] The orthographic projection of the edge of the third color filter on the plane where the base substrate is located surrounds the orthographic projection of the edge of the third light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns;

[0052] The orthographic projection of the edge of the fourth color filter on the plane where the substrate is located surrounds the orthographic projection of the edge of the fourth light-emitting area on the plane where the substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns.

[0053] In an exemplary embodiment, the display substrate further includes a light extraction layer, a first encapsulation layer, a color filter structure layer and a protective layer located on one side of the base substrate; the first encapsulation layer is located on a side of the light extraction layer away from the base substrate, and the color filter structure layer is located on a side of the first encapsulation layer away from the base substrate; the protective layer is located on a side of the color filter structure layer away from the base substrate, and the thickness of the protective layer ranges from 2.0 microns to 5.0 microns.

[0054] In an exemplary embodiment, the peak wavelength range of the first color light is 615 nm to 625 nm; the peak wavelength range of the second color light is 515 nm to 525 nm; the peak wavelength range of the third color light is 455 nm to 465 nm; and the peak wavelength range of the fourth color light is 525 nm to 585 nm.

[0055] In an exemplary embodiment, the orthographic projection shape of the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area on the plane where the substrate is located is any one of a triangle, a rectangle, a rhombus, a trapezoid, a pentagon, a hexagon or a circle.

[0056] In an exemplary embodiment, the second light-emitting region has a second light-emitting area, the third light-emitting region has a third light-emitting area, the first light-emitting region, the second light-emitting region, the third light-emitting region and the fourth light-emitting region have the same orthographic projection shape on the plane where the substrate is located, and the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area are all different; or, the first light-emitting region, the second light-emitting region, the third light-emitting region and the fourth light-emitting region have different orthographic projection shapes on the plane where the substrate is located.

[0057] On the other hand, an embodiment of the present disclosure provides a display substrate, comprising a base substrate, a plurality of light-emitting units located on the same side of the base substrate, and a cutoff layer located on a side of the plurality of light-emitting units away from the base substrate; the plurality of light-emitting units include at least a first light-emitting unit that emits a first color light, a second light-emitting unit that emits a second color light, and a third light-emitting unit that emits a third color light; the first light-emitting unit has a first light-emitting area, the second light-emitting unit has a second light-emitting area, and the third light-emitting unit has a third light-emitting area; the first color is red;

[0058] The orthographic projection of the cutoff layer on the plane where the base substrate is located at least partially overlaps with the orthographic projection of the first light-emitting area on the plane where the base substrate is located, and the cutoff layer is configured to prevent light with a wavelength above 630 nanometers from emitting from the display substrate.

[0059] In an exemplary embodiment, the orthographic projection of the cut-off layer on the plane where the base substrate is located includes the orthographic projection of the first light-emitting region on the plane where the base substrate is located.

[0060] In an exemplary embodiment, an orthographic projection of the cutoff layer on the plane where the base substrate is located at least partially overlaps with an orthographic projection of at least one of the second light-emitting region and the third light-emitting region on the plane where the base substrate is located.

[0061] In an exemplary embodiment, in a plane perpendicular to the base substrate, the display substrate further includes a light-emitting structure layer and a color filter structure layer sequentially located on the same side of the base substrate; the light-emitting structure layer includes at least a first light-emitting device of the first light-emitting unit, a second light-emitting device of the second light-emitting unit, and a third light-emitting device of the third light-emitting unit; the color filter structure layer includes at least a first color filter, a second color filter, and a third color filter; the cut-off layer is located on a side of the color filter structure layer away from the base substrate.

[0062] In an exemplary embodiment, in a plane perpendicular to the base substrate, the display substrate further includes a light-emitting structure layer located on one side of the base substrate; the light-emitting structure layer includes at least a first light-emitting device of the first light-emitting unit, a second light-emitting device of the second light-emitting unit, and a third light-emitting device of the third light-emitting unit; and the cutoff layer is located on a side of the light-emitting structure layer away from the base substrate.

[0063] In an exemplary embodiment, the display substrate further includes a light adjustment layer, and the light adjustment layer is located on a side of the cut-off layer away from the base substrate, and the light adjustment layer includes at least a polarizer.

[0064] In another aspect, an embodiment of the present disclosure provides a display device comprising the display substrate described in any one of the above embodiments.

[0065] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description.

[0066] Summary of the Figures

[0067] The accompanying drawings are used to provide an understanding of the technical solution of this article and constitute a part of the specification. Together with the embodiments of this article, they are used to explain the technical solution of this article and do not constitute a limitation to the technical solution of this article.

[0068] FIG1 is a display spectrum curve of a display device and a response spectrum curve of a night vision imaging system;

[0069] FIG2 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0070] FIG3 is a schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0071] FIG4 is a second schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0072] FIG5 is a third schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0073] FIG6 is a fourth schematic diagram of the planar structure of a display device according to an embodiment of the present disclosure;

[0074] FIG7 is a fifth schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0075] FIG8 is a sixth schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0076] FIG9 is a seventh schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure;

[0077] FIG10 is a schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure;

[0078] FIG11 is a graph showing a display spectrum curve of a display device and a response spectrum curve of a night vision imaging system according to an embodiment of the present disclosure;

[0079] FIG12 is a schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure;

[0080] FIG13 is a second schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure;

[0081] FIG14 is a third schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure;

[0082] FIG15 is a fourth schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure;

[0083] FIG16 is a schematic diagram of a partial cross-sectional structure of a display device according to another embodiment of the present disclosure;

[0084] FIG17 is a second schematic diagram of a partial cross-sectional structure of a display device according to another embodiment of the present disclosure;

[0085] FIG18 is a schematic diagram of a planar structure of a display device according to another embodiment of the present disclosure;

[0086] FIG19 is a second schematic planar structural diagram of a display device according to another embodiment of the present disclosure;

[0087] FIG20 is a third schematic planar structural diagram of a display device according to another embodiment of the present disclosure;

[0088] FIG21 is a fourth schematic planar structural diagram of a display device according to another embodiment of the present disclosure;

[0089] FIG22 is a fifth schematic diagram of the planar structure of a display device according to another embodiment of the present disclosure.

[0090] Details

[0091] The embodiments of the present disclosure will be described below with reference to the accompanying drawings. The embodiments can be implemented in a variety of different forms. A person skilled in the art can easily understand that the method and content can be transformed into one or more forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other in any way.

[0092] In the drawings, the size of one or more components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or values ​​shown in the drawings.

[0093] The ordinal numbers such as "first," "second," and "third" in this disclosure are provided to avoid confusion among constituent elements, and are not intended to limit the number. The "plurality" in this disclosure includes two or more.

[0094] In this disclosure, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation of this disclosure. The positional relationships of constituent elements are appropriately changed according to the direction in which the constituent elements are described. Therefore, the words and phrases are not limited to those described in the specification and can be appropriately replaced according to the circumstances.

[0095] In this disclosure, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the meaning of these terms in this disclosure based on the specific circumstances.

[0096] In this disclosure, a transistor refers to a device comprising at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain) and a source electrode (source electrode terminal, source region, or source), and current can flow through the drain electrode, the channel region, and the source electrode. In this disclosure, the channel region refers to the region through which current primarily flows.

[0097] In the present disclosure, the first electrode may be a drain electrode and the second electrode may be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in the present disclosure, "source electrode" and "drain electrode" may be interchanged.

[0098] In this disclosure, "electrically connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables the transfer of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having one or more functions.

[0099] In this disclosure, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus includes a state where the angle is greater than 85° and less than 95°.

[0100] In this disclosure, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0101] The term "about" in the present disclosure refers to a numerical value that is not strictly defined and allows for process and measurement errors.

[0102] The principle of a night vision imaging system is to utilize image enhancement and photoelectric conversion technologies to amplify infrared and near-infrared light in the environment outside the cabin, which is invisible or has low visual quality to the human eye, and then convert it into an image visible to the human eye. As shown in Figure 1, the red spectrum displayed by an existing display device significantly overlaps with the response spectrum of the night vision imaging system. As shown in Figure 1, the peak wavelength of the red spectrum is approximately 620 nanometers. In Figure 1, the curve marked ① is the response spectrum curve of the night vision imaging system, and the curve marked ② is the spectrum curve displayed by the display device. The red light emitted by the display device will interfere with the imaging of the night vision imaging system.

[0103] An embodiment of the present disclosure provides a display substrate, comprising a base substrate and a plurality of pixel units located on the base substrate; at least one pixel unit comprises a first light-emitting unit emitting a first color light, a second light-emitting unit emitting a second color light, a third light-emitting unit emitting a third color light, and a fourth light-emitting unit emitting a fourth color light; the first light-emitting unit has a first light-emitting area, the second light-emitting unit has a second light-emitting area, the third light-emitting unit has a third light-emitting area, and the fourth light-emitting unit has a fourth light-emitting area;

[0104] The first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are configured to emit light in a normal display mode; the second light-emitting unit, the third light-emitting unit, and the fourth light-emitting unit are configured to emit light in a night vision display mode, and the first light-emitting unit is configured not to emit light in the night vision display mode, and the first color is red;

[0105] The first light-emitting region has a first light-emitting area, the fourth light-emitting region has a fourth light-emitting area, and the fourth light-emitting area is smaller than the first light-emitting area.

[0106] The display substrate provided in the embodiment of the present disclosure, by adding a fourth light-emitting unit and rationally arranging the first to fourth light-emitting units, can enable the display device to display normally during the day, and the light emitted by the display device at night will not interfere with the night vision device, so that the night vision device can operate normally, the night vision device and the display device can be used at the same time, and it can be ensured that the image displayed by the display device is not distorted, thereby improving the compatibility of the display device and the night vision device.

[0107] FIG2 is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure. As shown in FIG2 , the display device may include a timing controller, a data driver, a scan driver, and a pixel array. The timing controller is respectively connected to the data driver and the scan driver. The data driver is respectively connected to a plurality of data signal lines (D1 to Dn). The scan driver is respectively connected to a plurality of scan signal lines (S1 to Sm). The pixel array may include a plurality of sub-pixels Pxij. Each sub-pixel Pxij may be connected to a corresponding data signal line and a corresponding scan signal line. i and j may be natural numbers. At least one sub-pixel Pxij may include at least a circuit unit and a display unit. The circuit unit may include at least a pixel driving circuit. The pixel driving circuit is respectively connected to the scan signal line and the data signal line. The display unit may include at least a light-emitting device. The light-emitting device is connected to the pixel driving circuit of the circuit unit. Sub-pixel Pxij may refer to a sub-pixel whose pixel driving circuit is connected to the i-th scan signal line and the j-th data signal line. In an exemplary embodiment, the timing controller may provide grayscale values ​​and control signals suitable for the specifications of the data driver to the data driver. It may also provide clock signals, scan start signals, etc. suitable for the specifications of the scan driver to the scan driver. The data driver can generate data voltages to be provided to data signal lines D1, D2, D3, ..., and Dn using grayscale values ​​and control signals received from a timing controller. For example, the data driver can sample grayscale values ​​using a clock signal and apply data voltages corresponding to the grayscale values ​​to data signal lines D1 to Dn on a pixel column basis, where n can be a natural number. The scan driver can generate scan signals to be provided to scan signal lines S1, S2, S3, ..., and Sm by receiving clock signals, scan start signals, etc. from a timing controller. For example, the scan driver can sequentially provide scan signals having on-level pulses to scan signal lines S1 to Sm. For example, the scan driver can be configured in the form of a shift register and can generate scan signals by sequentially transmitting scan start signals provided in the form of on-level pulses to the next level circuit under the control of a clock signal. m can be a natural number. In an exemplary embodiment, the pixel array can be provided on a display substrate.

[0108] FIG3 is a schematic diagram of a planar structure of a display device according to an embodiment of the present disclosure. As shown in FIG3 , the display device may include a display substrate, which may include a plurality of pixel units P arranged in a matrix. At least one pixel unit P may include a plurality of sub-pixels. The plurality of sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. Each of the four sub-pixels may include a pixel driving circuit and a light-emitting unit. The pixel driving circuit in each sub-pixel is respectively connected to a scan signal line and a data signal line. The pixel driving circuit is configured to receive a data voltage transmitted by the data signal line under the control of the scan signal line and output a corresponding current to the light-emitting device in the light-emitting unit. The light-emitting devices in each sub-pixel are respectively connected to the pixel driving circuit of the sub-pixel. The light-emitting devices are configured to emit light of corresponding brightness in response to the current output by the pixel driving circuit of the sub-pixel. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0109] In one exemplary embodiment, the first subpixel P1 may be a red subpixel that emits red (R) light, the second subpixel P2 may be a green subpixel that emits green (G) light, the third subpixel P3 may be a blue subpixel that emits blue (B) light, and the fourth subpixel P4 may be an orange subpixel that emits orange (O) light. The peak wavelength of red light ranges from 615 nanometers to 625 nanometers. The peak wavelength of green light ranges from 515 nanometers to 525 nanometers. The peak wavelength of blue light ranges from 455 nanometers to 465 nanometers. The peak wavelength of orange light ranges from 525 nanometers to 585 nanometers. In the embodiments of the present disclosure, red may be referred to as the first color, green may be referred to as the second color, blue may be referred to as the third color, and orange may be referred to as the fourth color. In the embodiments of the present disclosure, the first subpixel P1 includes a first light-emitting unit configured to emit light of the first color. The second subpixel P2 includes a second light-emitting unit configured to emit light of the second color. The third sub-pixel P3 includes a third light emitting unit configured to emit light of a third color. The fourth sub-pixel P4 includes a fourth light emitting unit configured to emit light of a fourth color.

[0110] In an exemplary embodiment, the first subpixel P1 may have a first light-emitting area 10, the second subpixel P2 may have a second light-emitting area 20, the third subpixel P3 may have a third light-emitting area 30, and the fourth subpixel P4 may have a fourth light-emitting area 40. The arrangement of the plurality of first light-emitting areas 10, the plurality of second light-emitting areas 20, the plurality of third light-emitting areas 30, and the plurality of fourth light-emitting areas 40 satisfies one of the following arrangement forms:

[0111] First arrangement: The first light-emitting areas 10, the second light-emitting areas 20, and the third light-emitting areas 30 are arranged alternately along the first direction X, and the second light-emitting areas 20 and the fourth light-emitting areas 40 are arranged alternately along the second direction Y. Second arrangement: The first light-emitting areas 10 and the third light-emitting areas 30 are arranged alternately along the first direction X, the second light-emitting areas 20 and the fourth light-emitting areas 40 are arranged alternately along the first direction X, and the first light-emitting areas 10 and the second light-emitting areas 20 are arranged alternately along the second direction Y, and the third light-emitting areas 30 and the fourth light-emitting areas 40 are arranged alternately along the second direction Y. Third arrangement: The first light-emitting areas 10, the fourth light-emitting areas 40, the third light-emitting areas 30, and the fourth light-emitting areas 40 are arranged alternately in sequence along the first direction X, and multiple second light-emitting areas 20 are arranged in sequence along the first direction X, the fourth light-emitting areas 40 and the second light-emitting areas 20 are arranged alternately in the second direction Y, and the first light-emitting areas 10 and the third light-emitting areas 30 are arranged alternately in the second direction Y. Fourth arrangement: The first light-emitting regions 10 and the third light-emitting regions 30 are arranged alternately along the first direction X, and the first light-emitting regions 10, the fourth light-emitting regions 40, and the third light-emitting regions 30 are arranged alternately along the second direction Y, and the plurality of second light-emitting regions 20 are arranged sequentially along the second direction Y. Fifth arrangement: The third light-emitting regions 30, the first light-emitting region 10, and the two second light-emitting regions 20 are arranged alternately along the first direction X, and the two second light-emitting regions 20 are arranged along the second direction Y, and the plurality of fourth light-emitting regions 40 are arranged along the second direction Y. In one exemplary embodiment, as shown in FIG. 3 , the display substrate may have a first central axis 100 extending along the first direction X, and the display substrate may have a second central axis 200 extending along the second direction Y. The display substrate may include a plurality of pixel units P arranged in a matrix. In some possible embodiments, the plurality of pixel units P may be symmetrical along the first central axis 100, or the plurality of pixel units P may be symmetrical along the second central axis 200, or the plurality of pixel units P may be symmetrical along both the first central axis 100 and the second central axis 200. In the embodiment of the present disclosure, the first direction X intersects with the second direction Y, and a plane formed by the first direction X and the second direction Y is parallel to the plane where the display substrate is located.

[0112] In an exemplary embodiment, as shown in FIG3 , the first subpixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second subpixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third subpixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth subpixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located may be any one of a triangle, a rectangle, a rhombus, a trapezoid, a pentagon, a hexagon, or a circle, or the orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located may be any one of a near-triangle, a near-rectangle, a near-rhombus, a near-trapezoidal, a near-pentagon, or a near-hexagon, which is not limited in this disclosure. The orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located may include rounded corners or chamfered corners, etc. For example, the orthographic projection shape of the first light emitting region 10 on the plane where the display substrate is located may be an approximate rectangle, and one or more corners of the approximate rectangle may be rounded.

[0113] In one exemplary embodiment, the orthographic projection shape of the second light-emitting region 20 on the plane where the display substrate is located can be the same as or different from the orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located. The orthographic projection shape of the third light-emitting region 30 on the plane where the display substrate is located can be the same as or different from the orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located. The orthographic projection shape of the fourth light-emitting region 40 on the plane where the display substrate is located can be the same as or different from the orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located.

[0114] In one exemplary embodiment, the orthographic projections of the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane of the display substrate have the same shape, and the orthographic projection areas of the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane of the display substrate are all different. For example, the orthographic projection areas of the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane of the display substrate vary proportionally. For example, the orthographic projection area of ​​the first light-emitting region 10 on the plane of the display substrate is twice the orthographic projection area of ​​the fourth light-emitting region 40 on the plane of the display substrate, the orthographic projection area of ​​the second light-emitting region 20 on the plane of the display substrate is twice the orthographic projection area of ​​the first light-emitting region 10 on the plane of the display substrate, and the orthographic projection area of ​​the third light-emitting region 30 on the plane of the display substrate is twice the orthographic projection area of ​​the second light-emitting region 20 on the plane of the display substrate. In the embodiment of the present disclosure, the orthographic projection area of ​​the first light-emitting region on the plane where the display substrate is located can also be referred to as the first light-emitting area, the orthographic projection area of ​​the second light-emitting region on the plane where the display substrate is located can also be referred to as the second light-emitting area, the orthographic projection area of ​​the third light-emitting region on the plane where the display substrate is located can also be referred to as the third light-emitting area, and the orthographic projection area of ​​the fourth light-emitting region on the plane where the display substrate is located can also be referred to as the fourth light-emitting area.

[0115] In an exemplary embodiment, as shown in FIG3 , the first light-emitting region 10 , the second light-emitting region 20 , and the third light-emitting region 30 are sequentially arranged and spaced apart along the first direction X. The fourth light-emitting region 40 and the second light-emitting region 20 are sequentially arranged and spaced apart along the second direction Y. For example, the fourth light-emitting region 40 may be located on a side of the first light-emitting region 10 opposite to the second direction Y.

[0116] In an exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. For example, the third light-emitting area is larger than the first light-emitting area, the third light-emitting area is larger than the second light-emitting area, and the third light-emitting area is larger than the fourth light-emitting area.

[0117] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.5, which can ensure that the display substrate displays an image without distortion.

[0118] In an exemplary embodiment, among the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area, the fourth light-emitting area is the smallest, so that when the display substrate is in the night vision display mode, the display device and the night vision goggles can work at the same time, and the light emitted by the display substrate will not affect the normal operation of the night vision goggles, thereby improving the compatibility between the display device and the night vision goggles.

[0119] In an exemplary embodiment, within the same pixel unit, the minimum distance between the edges of the orthographic projections of two adjacent regions among the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane where the display substrate is located can be 15 microns to 25 microns.

[0120] FIG4 is a second schematic planar structural diagram of a display device according to an embodiment of the present disclosure. As shown in FIG4 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in FIG4 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0121] As shown in FIG4 , the first light-emitting region 10 and the second light-emitting region 20 may be arranged at intervals along the second direction Y, and the third light-emitting region 30 and the fourth light-emitting region 40 may be arranged at intervals along the second direction Y, and the third light-emitting region 30 and the fourth light-emitting region 40 are located on one side of the extending direction of the first light-emitting region 10 and the second light-emitting region 20. For example, the third light-emitting region 30 is located on one side of the first light-emitting region 10 in the first direction X, and the fourth light-emitting region 40 is located on one side of the second light-emitting region 20 in the first direction X.

[0122] In an exemplary embodiment, as shown in Figure 4, the line connecting the center of the orthographic projection of the first light-emitting area 10 on the plane where the display substrate is located and the center of the orthographic projection of the second light-emitting area 20 on the plane where the display substrate is located is a first line P10, and the line connecting the center of the orthographic projection of the third light-emitting area 30 on the plane where the display substrate is located and the center of the orthographic projection of the fourth light-emitting area 40 on the plane where the display substrate is located is a second line P20. The first line P10 can be parallel to the second line P20.

[0123] In an exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. For example, the third light-emitting area is larger than the first light-emitting area, the third light-emitting area is larger than the second light-emitting area, and the third light-emitting area is larger than the fourth light-emitting area.

[0124] In an exemplary embodiment, among the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area, the fourth light-emitting area is the smallest, so that when the display substrate is in the night vision display mode, the display device and the night vision goggles can work at the same time, and the light emitted by the display substrate will not affect the normal operation of the night vision goggles, thereby improving the compatibility between the display device and the night vision goggles.

[0125] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.5, which can ensure that the display substrate displays an image without distortion.

[0126] In an exemplary embodiment, within the same pixel unit, the minimum distance between the edges of the orthographic projections of two adjacent regions among the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane where the display substrate is located can be 15 microns to 25 microns.

[0127] Figure 5 is a third schematic planar structural diagram of a display device according to an embodiment of the present disclosure. As shown in Figure 5 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in Figure 5 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0128] As shown in FIG5 , the plurality of pixel units P may include a plurality of first pixel units P11. The first pixel unit P11 may include a first sub-pixel P1, a second sub-pixel P2, a third sub-pixel P3, and a fourth sub-pixel P4. A line connecting the center of the orthographic projection of the first light-emitting region 10 on the plane of the display substrate and the center of the orthographic projection of the second light-emitting region 20 on the plane of the display substrate is a first straight line L11. A line connecting the center of the orthographic projection of the second light-emitting region 20 on the plane of the display substrate and the center of the orthographic projection of the third light-emitting region 30 on the plane of the display substrate is a second straight line L22. A line connecting the center of the orthographic projection of the third light-emitting region 30 on the plane of the display substrate and the center of the orthographic projection of the first light-emitting region 10 on the plane of the display substrate is a third straight line L33. The first straight line L11, the second straight line L22, and the third straight line L33 intersect to form a triangle. The orthographic projection of the fourth light-emitting region 40 on the plane of the display substrate is located within the triangle. For example, the triangle may be an isosceles triangle.

[0129] In an exemplary embodiment, the center of the orthographic projection of the fourth light emitting area 40 on the plane where the display substrate is located coincides with the center of the triangle.

[0130] In one exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. As shown in FIG5 , the first light-emitting area, the second light-emitting area, and the third light-emitting area can all be larger than the fourth light-emitting area. This allows the display device and night vision goggles to operate simultaneously when the display substrate is in night vision display mode, and the light emitted by the display substrate does not affect the normal operation of the night vision goggles, thereby improving the compatibility between the display device and the night vision goggles.

[0131] In an exemplary embodiment, as shown in Figure 5, there is a first minimum spacing W1 between the orthographic projection of the first light-emitting area 10 on the plane where the display substrate is located and the orthographic projection of the fourth light-emitting area 40 on the plane where the display substrate is located, there is a second minimum spacing W2 between the orthographic projection of the second light-emitting area 20 on the plane where the display substrate is located and the orthographic projection of the fourth light-emitting area 40 on the plane where the display substrate is located, and there is a third minimum spacing W3 between the orthographic projection of the third light-emitting area 30 on the plane where the display substrate is located and the orthographic projection of the fourth light-emitting area 40 on the plane where the display substrate is located. The first minimum spacing W1 can be equal to the second minimum spacing W2, and the first minimum spacing W1 can be equal to the third minimum spacing W3.

[0132] In some possible exemplary embodiments, at least two of the first minimum interval W1 , the second minimum interval W2 , and the third minimum interval W3 may be equal.

[0133] In an exemplary embodiment, as shown in FIG5 , the plurality of pixel units P may include a plurality of second pixel units P22 , each of which may include a first sub-pixel P1 , a second sub-pixel P2 , a third sub-pixel P3 , and a fourth sub-pixel P4 . A line connecting the center of the orthographic projection of the first light-emitting region 10 on the plane of the display substrate and the center of the orthographic projection of the second light-emitting region 20 on the plane of the display substrate is a fourth straight line L44 , a line connecting the center of the orthographic projection of the second light-emitting region 20 on the plane of the display substrate and the center of the orthographic projection of the third light-emitting region 30 on the plane of the display substrate is a fifth straight line L55 , and a line connecting the center of the orthographic projection of the third light-emitting region 30 on the plane of the display substrate and the center of the orthographic projection of the first light-emitting region 10 on the plane of the display substrate is a sixth straight line L66 . The fourth straight line L44 , the fifth straight line L55 , and the sixth straight line L66 intersect to form a triangle, and the orthographic projection of the fourth light-emitting region 40 on the plane of the display substrate is located within the triangle. For example, the triangle may be an isosceles triangle.

[0134] In an exemplary embodiment, as shown in FIG5 , a plurality of first pixel units P11 and a plurality of second pixel units P22 may be alternately arranged in sequence along the first direction X. The first straight line L11 and the fifth straight line L55 may be parallel, the second straight line L22 and the fourth straight line L44 may be parallel, and the third straight line L33 and the sixth straight line L66 may be parallel.

[0135] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.5, which can ensure that the displayed image of the display substrate is not distorted.

[0136] In an exemplary embodiment, within the same pixel unit, the minimum distance between the edges of the orthographic projections of two adjacent regions among the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane where the display substrate is located can be 15 microns to 25 microns.

[0137] Figure 6 is a fourth schematic diagram of the planar structure of a display device according to an embodiment of the present disclosure. As shown in Figure 6 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in Figure 6 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0138] As shown in FIG6 , the plurality of pixel units P may include a third pixel unit P33, a fourth pixel unit P44, and a fifth pixel unit P55 arranged sequentially along a first direction X. The third pixel unit P33 and the fourth pixel unit P44 share some sub-pixels, and the fourth pixel unit P44 and the fifth pixel unit P55 share some sub-pixels. In the present embodiment, the shared sub-pixels are referred to as shared sub-pixels, and the shared sub-pixels may include at least one of the first sub-pixel P1 and the third sub-pixel P3. For example, as shown in FIG6 , the third pixel unit P33 and the fourth pixel unit P44 share one third sub-pixel P3. The fourth pixel unit P44 and the fifth pixel unit P55 share one first sub-pixel P1. This arrangement can increase the pixel density of the display substrate and reduce the size of the display substrate. As shown in FIG6 , the fourth light-emitting region 40 may be located between the first light-emitting region 10 and the third light-emitting region 30, and the plurality of fourth light-emitting regions 40 may be arranged at intervals along the first direction X.

[0139] 6 , the second sub-pixel P2 and the fourth sub-pixel P4 may be sequentially arranged at intervals along the second direction Y. The second light emitting region 20 and the fourth light emitting region 40 may be sequentially arranged at intervals along the second direction Y.

[0140] In one exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. As shown in FIG6 , the first light-emitting area, the second light-emitting area, and the third light-emitting area can all be larger than the fourth light-emitting area. This allows the display device and night vision goggles to operate simultaneously when the display substrate is in night vision display mode, and the light emitted by the display substrate does not affect the normal operation of the night vision goggles, thereby improving the compatibility of the display device and night vision goggles.

[0141] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.3, which can ensure that the displayed image of the display substrate is not distorted.

[0142] Figure 7 is a fifth schematic planar structural diagram of a display device according to an embodiment of the present disclosure. As shown in Figure 7 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in Figure 7 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0143] As shown in FIG7 , the plurality of pixel units P may include a sixth pixel unit P66, a seventh pixel unit P77, and an eighth pixel unit P88, arranged sequentially along a first direction X. The sixth pixel unit P66 and the seventh pixel unit P77 share some sub-pixels, and the seventh pixel unit P77 and the eighth pixel unit P88 share some sub-pixels. In the present embodiment, the shared sub-pixels are referred to as shared sub-pixels. The shared sub-pixels may include at least one of a first sub-pixel P1, a third sub-pixel P3, and a fourth sub-pixel P4. For example, as shown in FIG7 , the sixth pixel unit P66 and the seventh pixel unit P77 share one third sub-pixel P3. The seventh pixel unit P77 and the eighth pixel unit P88 share one first sub-pixel P1 and one fourth sub-pixel P4. This arrangement can increase the pixel density of the display substrate and reduce the size of the display substrate. For example, as shown in FIG7 , a fourth light-emitting region 40 may be located between two adjacent second light-emitting regions 20, and multiple fourth light-emitting regions 40 may be arranged at intervals along the first direction X.

[0144] In an exemplary embodiment, as shown in FIG. 7 , the fourth subpixel P4 and the first subpixel P1 may be provided in a group, and the fourth subpixel P4 and the first subpixel P1 in the same group may be adjacently arranged along the second direction Y.

[0145] In one exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. As shown in FIG7 , the first light-emitting area, the second light-emitting area, and the third light-emitting area can all be larger than the fourth light-emitting area. This allows the display device and night vision goggles to operate simultaneously when the display substrate is in night vision display mode, and the light emitted by the display substrate does not affect the normal operation of the night vision goggles, thereby improving the compatibility of the display device and night vision goggles.

[0146] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.5, which can ensure that the displayed image of the display substrate is not distorted.

[0147] In an exemplary embodiment, within the same pixel unit, the minimum distance between the edges of the orthographic projections of two adjacent regions among the first light-emitting region 10, the second light-emitting region 20, the third light-emitting region 30, and the fourth light-emitting region 40 on the plane where the display substrate is located can be 15 microns to 25 microns.

[0148] Figure 8 is a sixth schematic diagram of the planar structure of a display device according to an embodiment of the present disclosure. As shown in Figure 8 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in Figure 8 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0149] As shown in FIG8 , the plurality of pixel units P may include at least one ninth pixel unit P99 and one tenth pixel unit P100. Each of the ninth pixel unit P99 and the tenth pixel unit P100 may include one first sub-pixel P1, two second sub-pixels P2, one third sub-pixel P3, and one fourth sub-pixel P4. The two second sub-pixels P2 located in the same ninth pixel unit P99 may be arranged at intervals along the second direction Y.

[0150] A plurality of ninth pixel units P99 and a plurality of tenth pixel units P100 may be alternately arranged in sequence along the second direction Y. Adjacent ninth pixel units P99 and tenth pixel units P100 share some sub-pixels. In the embodiment of the present disclosure, the shared sub-pixels are referred to as shared sub-pixels, and the shared sub-pixels may include at least one of the first sub-pixel P1 and the third sub-pixel P3. As shown in FIG8 , the first sub-pixel P1 and the third sub-pixel P3 in the adjacent ninth pixel unit P99 and tenth pixel unit P100 are shared, and the second sub-pixel P2 in the adjacent ninth pixel unit P99 and tenth pixel unit P100 are located on opposite sides of the first sub-pixel P1 and the third sub-pixel P3 along the second direction Y, respectively.

[0151] In an exemplary embodiment, as shown in Figure 8, the line connecting the center of the orthographic projection of the first light-emitting area 10 on the plane where the display substrate is located and the center of the orthographic projection of the third light-emitting area 30 on the plane where the display substrate is located is a third line P30. The third line P30 can extend along the first direction X, and the adjacent ninth pixel unit P99 and tenth pixel unit P100 can be symmetrical about the third line P30.

[0152] In one exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. As shown in FIG8 , the first light-emitting area, the second light-emitting area, and the third light-emitting area are all larger than the fourth light-emitting area. This allows the display device and night vision goggles to operate simultaneously when the display substrate is in night vision display mode, and the light emitted by the display substrate does not affect the normal operation of the night vision goggles, thereby improving the compatibility of the display device and night vision goggles.

[0153] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.3, which can ensure that the displayed image of the display substrate is not distorted.

[0154] Figure 9 is a seventh schematic planar structural diagram of a display device according to an embodiment of the present disclosure. As shown in Figure 9 , the display substrate may include multiple pixel units P arranged in a matrix. At least one pixel unit P may include multiple sub-pixels. The multiple sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first color may be red, the second color may be green, the third color may be blue, and the fourth color may be orange. As shown in Figure 9 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The fourth sub-pixel P4 may have a fourth light-emitting region 40, through which light may be emitted from the display device. The display substrate provided by the embodiments of the present disclosure can be used in both normal display mode and night vision display mode. In normal display mode, the first subpixel emits light of a first color. In night vision display mode, the first subpixel does not emit light of the first color, and the fourth subpixel emits light of a fourth color. When the display substrate is in night vision display mode, the display device and night vision goggles can operate simultaneously. The light emitted by the display substrate does not affect the normal operation of the night vision goggles. The display substrate provided by the embodiments of the present disclosure is highly compatible with the night vision goggles and can ensure that the displayed image is not distorted.

[0155] As shown in FIG9 , the plurality of pixel units P may include at least one eleventh pixel unit P110 and one twelfth pixel unit P120. Each of the eleventh pixel unit P110 and the twelfth pixel unit P120 may include one first sub-pixel P1, two second sub-pixels P2, one third sub-pixel P3, and one fourth sub-pixel P4. The two second sub-pixels P2 located in the same eleventh pixel unit P110 may be arranged at intervals along the second direction Y.

[0156] A plurality of eleventh pixel units P110 and a plurality of twelfth pixel units P120 may be alternately arranged in sequence along the second direction Y. Adjacent eleventh pixel units P110 and twelfth pixel units P120 share some sub-pixels. In the embodiment of the present disclosure, the shared sub-pixels are referred to as shared sub-pixels, and the shared sub-pixels may include at least one of the first sub-pixel P1, the fourth sub-pixel P4, and the third sub-pixel P3. As shown in FIG9 , the first sub-pixel P1, the fourth sub-pixel P4, and the third sub-pixel P3 in the adjacent eleventh pixel unit P110 and the twelfth pixel unit P120 are shared, and the second sub-pixel P2 in the adjacent eleventh pixel unit P110 and the twelfth pixel unit P120 are located on opposite sides of the first sub-pixel P1 and the third sub-pixel P3 along the second direction Y, respectively.

[0157] In an exemplary embodiment, as shown in FIG. 9 , the first sub-pixel P1 and the fourth sub-pixel P4 are arranged in a group, and the first sub-pixel P1 and the fourth sub-pixel P4 are arranged at intervals along the second direction Y.

[0158] In one exemplary embodiment, the first light-emitting region 10 has a first light-emitting area, the second light-emitting region 20 has a second light-emitting area, the third light-emitting region 30 has a third light-emitting area, and the fourth light-emitting region 40 has a fourth light-emitting area. As shown in FIG9 , the first light-emitting area, the second light-emitting area, and the third light-emitting area are all larger than the fourth light-emitting area. This allows the display device and night vision goggles to operate simultaneously when the display substrate is in night vision display mode, and the light emitted by the display substrate does not affect the normal operation of the night vision goggles, thereby improving the compatibility between the display device and the night vision goggles.

[0159] In an exemplary embodiment, the fourth light emitting area is smaller than the first light emitting area, and the ratio of the first light emitting area to the fourth light emitting area may be in a range of 1:0.1 to 1:0.5, which can ensure that the displayed image of the display substrate is not distorted.

[0160] FIG10 is a schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure. As shown in FIG10 , taking only one pixel unit as an example, the pixel unit may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, a third sub-pixel P3 that emits a third color light, and a fourth sub-pixel P4 that emits a fourth color light. The first sub-pixel P1 may include a first light-emitting unit 1, which is configured to emit a first color light. The second sub-pixel P2 may include a second light-emitting unit 2, which is configured to emit a second color light. The third sub-pixel P3 may include a third light-emitting unit 3, which is configured to emit a third color light. The fourth sub-pixel P4 may include a fourth light-emitting unit 4, which is configured to emit a fourth color light. The first light-emitting unit 1 has a first light-emitting area, the second light-emitting unit 2 has a second light-emitting area, the third light-emitting unit 3 has a third light-emitting area, and the fourth light-emitting unit 4 has a fourth light-emitting area. The first light emitting unit 1, the second light emitting unit 2 and the third light emitting unit 3 are configured to emit light in the normal display mode, and the fourth light emitting unit 4 is configured to emit light in the normal display mode, or the fourth light emitting unit 4 is configured not to emit light in the normal display mode. The second light emitting unit 2, the third light emitting unit 3 and the fourth light emitting unit 4 are configured to emit light in the night vision display mode, and the first light emitting unit 1 is configured not to emit light in the night vision display mode. The display substrate provided in the embodiment of the present disclosure, by adding a fourth light emitting unit and rationally arranging the first to fourth light emitting units, can enable the display device to display normally during the day, the light emitted by the display device at night will not interfere with the night vision device, the night vision device can work normally, the night vision device and the display device can be used at the same time, and it can be ensured that the image displayed by the display device is not distorted.

[0161] As shown in FIG10 , a display device may include a display substrate, which may include a base substrate 101 and a driving circuit layer 102, a light-emitting structure layer 103, a first encapsulation layer 104, a touch structure layer 105, a color filter structure layer 106, a protective layer 109, and a light-regulating layer 110, which are sequentially arranged on one side of the base substrate 101. In some possible implementations, the display device may also include other film layers, which are not limited in this disclosure. The light-emitting structure layer 103 may include multiple light-emitting devices, which may include at least a first light-emitting device 301, a second light-emitting device 302, a third light-emitting device 303, and a fourth light-emitting device 304. The color filter structure layer 106 may include multiple color filters, which may include at least a first color filter 601, a second color filter 602, a third color filter 603, and a fourth color filter 604. The first light-emitting unit 1 may include a first light-emitting device 301 and a first color filter 601, the second light-emitting unit 2 may include a second light-emitting device 302 and a second color filter 602, the third light-emitting unit 3 may include a third light-emitting device 303 and a third color filter 603, and the fourth light-emitting unit 4 may include a fourth light-emitting device 304 and a fourth color filter 604.

[0162] In an exemplary embodiment, the substrate 101 may be a silicon-on-insulator (SOI) substrate or a glass substrate. The driving circuit layer 102 may be prepared on the substrate 101 by a silicon semiconductor process (such as a CMOS process). The driving circuit layer 102 may include a plurality of circuit units, and the circuit unit may include at least a pixel driving circuit, and the pixel driving circuit is connected to the scanning signal line and the data signal line respectively, and the pixel driving circuit may include a plurality of transistors and a storage capacitor. The transistor may include a gate electrode, a first pole and a second pole. For example, the gate electrode, the first pole and the second pole may be connected to corresponding connecting electrodes respectively through tungsten metal-filled vias (i.e., tungsten vias, W-vias), and may be connected to other electrical structures (such as traces, etc.) through connecting electrodes. In the embodiment of the present disclosure, the plane where the substrate is located is parallel to the plane where the display substrate is located.

[0163] In an exemplary embodiment, the driving circuit layer 102 may include a circuit structure layer 201 and a connection layer 202. The circuit structure layer 201 may include multiple pixel driving circuits, each of which may include multiple transistors and storage capacitors. The transistor may include a gate electrode, a first electrode, and a second electrode. The connection layer 202 may include multiple connection electrodes, each of which may include at least a first connection electrode, a second connection electrode, a third connection electrode, and a fourth connection electrode. The first connection electrode is configured to connect the first light-emitting device 301 and the pixel driving circuit electrically connected thereto. The second connection electrode is configured to connect the second light-emitting device 302 and the pixel driving circuit electrically connected thereto. The third connection electrode is configured to connect the third light-emitting device 303 and the pixel driving circuit electrically connected thereto. The fourth connection electrode is configured to connect the fourth light-emitting device 304 and the pixel driving circuit electrically connected thereto.

[0164] In an exemplary embodiment, the material of the connection layer 202 can be a metal material, such as any one or more of molybdenum (Mo), aluminum (Al), copper (Cu), and titanium (Ti). Alternatively, it can be an alloy material of metal materials such as molybdenum (Mo), aluminum (Al), copper (Cu), and titanium (Ti), such as aluminum-neodymium alloy (AlNd), molybdenum-niobium alloy (MoNb), or molybdenum-nickel-titanium alloy (MoNiTi). The connection layer 202 can have a single-layer structure or a multi-layer composite structure, such as Ti / Al / Ti, Mo / Nb / Cu, MoNiTi / Cu, MoNb / Cu / MoNiTi, or MoNiTi / Cu / MoNiTi.

[0165] In an exemplary embodiment, the light-emitting structure layer 103 may include a plurality of light-emitting devices, and the light-emitting device may include at least a first electrode, an organic light-emitting layer, and a second electrode. The first electrode may be connected to the second electrode of the transistor through a connecting electrode, the organic light-emitting layer is connected to the first electrode, the second electrode is connected to the organic light-emitting layer, and the second electrode may be connected to a second power line. The organic light-emitting layer emits light under the drive of the first electrode and the second electrode. For example, the first electrode may be the anode of the light-emitting device, and the second electrode may be the cathode of the light-emitting device. In an exemplary embodiment, the organic light-emitting layer may include a light-emitting layer (EML for short), and any one or more of the following: a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL). In some possible implementations, for a light-emitting device emitting white light, the organic light-emitting layers of all sub-pixels may be a common layer connected together.

[0166] In one exemplary embodiment, as shown in FIG10 , within a plane perpendicular to the base substrate 101, the light-emitting structure layer 103 may include an anode layer, an organic light-emitting layer, and a cathode layer, stacked sequentially in a direction away from the base substrate 101. The light-emitting structure layer 103 may include a plurality of light-emitting devices, which may include at least a first light-emitting device 301, a second light-emitting device 302, a third light-emitting device 303, and a fourth light-emitting device 304. In the disclosed embodiment, the first light-emitting device 301 may be configured to emit light of a first color, the second light-emitting device 302 may be configured to emit light of a second color, the third light-emitting device 303 may be configured to emit light of a third color, and the fourth light-emitting device 304 may be configured to emit light of the first color.

[0167] In one exemplary embodiment, as shown in FIG10 , the first subpixel P1 may have a first microcavity length H1, the second subpixel P2 may have a second microcavity length H2, the third subpixel P3 may have a third microcavity length H3, and the fourth subpixel P4 may have a fourth microcavity length H4, where H1 is greater than H4, H4 is greater than H2, and H2 is greater than H3. The display substrate provided by the disclosed embodiment can utilize a strong microcavity effect to enhance the light emitted by the organic light-emitting layer of each subpixel near the resonant wavelength of the microcavity length and broaden its spectrum, while weakening the light at other wavelengths not corresponding to the resonant wavelength and narrowing its spectrum. This allows the light-emitting structure layer located in the first subpixel P1 to primarily emit light of the first color, the light-emitting structure layer located in the second subpixel P2 to primarily emit light of the second color, the light-emitting structure layer located in the third subpixel P3 to primarily emit light of the third color, and the light-emitting structure layer located in the fourth subpixel P4 to primarily emit light of the first color. Because the color of the light emitted by the light-emitting structure layer located in the first, second, and third sub-pixels is the same as the color of the light allowed to pass through the color filter of the sub-pixel, the light energy loss caused by the light passing through the color filter can be minimized, thereby improving the light extraction efficiency of the display substrate and enhancing the display effect of the display product. In the embodiment of the present disclosure, the microcavity length refers to the distance between the cathode and anode of the sub-pixel in the optical resonant cavity.

[0168] In one exemplary embodiment, as shown in FIG10 , the first light-emitting device 301 may include a first electrode 301-1, a first organic light-emitting layer 301-3, and a second electrode 301-2. The first electrode 301-1 may be located in the anode layer, the first organic light-emitting layer 301-3 may be located in the organic light-emitting layer, and the second electrode 301-2 may be located in the cathode layer. The first electrode 301-1 may be connected to the second electrode of the transistor via a first connecting electrode, the first organic light-emitting layer 301-3 may be connected to the first electrode 301-1, and the second electrode 301-2 may be connected to the first organic light-emitting layer 301-3. The second electrode 301-2 may be connected to a second power line. The first organic light-emitting layer 301-3 emits light when driven by the first and second electrodes 301-1 and 301-2. In an embodiment of the present disclosure, the second power line is configured to continuously provide a low-level signal to the light-emitting device. The first electrode 301-1 may be the anode of the first light-emitting device 301, and the second electrode 301-2 may be the cathode of the first light-emitting device 301.

[0169] In one exemplary embodiment, as shown in FIG10 , the second light-emitting device 302 may include a third electrode 302-3, a second organic light-emitting layer 302-5, and a fourth electrode 302-4. The third electrode 302-3 may be located in the anode layer, the second organic light-emitting layer 302-5 may be located in the organic light-emitting layer, and the fourth electrode 302-4 may be located in the cathode layer. The third electrode 302-3 may be connected to the second electrode of the transistor via a second connecting electrode, the second organic light-emitting layer 302-5 may be connected to the third electrode 302-3, and the fourth electrode 302-4 may be connected to the second organic light-emitting layer 302-5. The fourth electrode 302-4 may be connected to a second power line. The second organic light-emitting layer 302-5 emits light when driven by the third electrode 302-3 and the fourth electrode 302-4. The third electrode 302-3 may be the anode of the second light-emitting device 302, and the fourth electrode 302-4 may be the cathode of the second light-emitting device 302.

[0170] In one exemplary embodiment, as shown in FIG10 , the third light-emitting device 303 may include a fifth electrode 303-5, a third organic light-emitting layer 303-7, and a sixth electrode 303-6. The fifth electrode 303-5 may be located in the anode layer, the third organic light-emitting layer 303-7 may be located in the organic light-emitting layer, and the sixth electrode 303-6 may be located in the cathode layer. The fifth electrode 303-5 may be connected to the second electrode of the transistor via a third connecting electrode, the third organic light-emitting layer 303-7 may be connected to the fifth electrode 303-5, the sixth electrode 303-6 may be connected to the third organic light-emitting layer 303-7, and the sixth electrode 303-6 may be connected to a second power line. The third organic light-emitting layer 303-7 emits light when driven by the fifth and sixth electrodes 303-5, 303-6. The fifth electrode 303-5 may be the anode of the third light-emitting device 303, and the sixth electrode 303-6 may be the cathode of the third light-emitting device 303.

[0171] In one exemplary embodiment, as shown in FIG10 , the fourth light-emitting device 304 may include a seventh electrode 304-7, a fourth organic light-emitting layer 304-9, and an eighth electrode 304-8. The seventh electrode 304-7 may be located in the anode layer, the fourth organic light-emitting layer 304-9 may be located in the organic light-emitting layer, and the eighth electrode 304-8 may be located in the cathode layer. The seventh electrode 304-7 may be connected to the second electrode of the transistor via a fourth connecting electrode, the fourth organic light-emitting layer 304-9 may be connected to the seventh electrode 304-7, the eighth electrode 304-8 may be connected to the fourth organic light-emitting layer 304-9, and the eighth electrode 304-8 may be connected to a second power line. The fourth organic light-emitting layer 304-9 emits light when driven by the seventh electrode 304-7 and the eighth electrode 304-8. The seventh electrode 304-7 may be the anode of the fourth light-emitting device 304, and the eighth electrode 304-8 may be the cathode of the fourth light-emitting device 304. The cathode of the first light-emitting device 301, the cathode of the second light-emitting device 302, the cathode of the third light-emitting device 303, and the cathode of the fourth light-emitting device 304 can be interconnected as an integral structure. For example, the structures of the first organic light-emitting layer 301-3 and the fourth organic light-emitting layer 304-9 can be the same, and the first light-emitting device 301 and the fourth light-emitting device 304 can both emit red light.

[0172] In one exemplary embodiment, as shown in FIG10 , along the thickness direction of the display substrate, the first organic light-emitting layer 301-3 has a first dimension L1, the second organic light-emitting layer 302-5 has a second dimension L2, the third organic light-emitting layer 303-7 has a third dimension L3, and the fourth organic light-emitting layer 304-9 has a fourth dimension L4. The first dimension L1 is greater than the fourth dimension L4, the fourth dimension L4 is greater than the second dimension L2, and the second dimension L2 is greater than the third dimension L3. The display substrate provided in the present embodiment can adjust the first dimension L1, the second dimension L2, the third dimension L3, and the fourth dimension L4 so that the first subpixel P1 has a first microcavity length H1, the second subpixel P2 has a second microcavity length H2, the third subpixel P3 has a third microcavity length H3, and the fourth subpixel P4 has a fourth microcavity length H4.

[0173] In an exemplary embodiment, in a plane perpendicular to the base substrate 101, the light emitting structure layer 103 may further include a light extraction layer 305, and the light extraction layer 305 is located on the side of the cathode layer away from the base substrate 101. The orthographic projection of the light extraction layer 305 on the plane where the base substrate 101 is located may include the orthographic projections of the first light emitting device 301, the second light emitting device 302, the third light emitting device 303, and the fourth light emitting device 304 on the plane where the base substrate 101 is located. The provision of the light extraction layer can enhance the light extraction effect. The material of the light extraction layer 305 may include an organic material, for example, an organic material such as any one or more of epoxy resin, phenolic resin, urea-formaldehyde resin, melamine formaldehyde resin, furan resin, silicone resin, polyester resin, polyamide resin, acrylic resin, polyurethane, vinyl resin, hydrocarbon resin, polyether resin, etc.

[0174] In an exemplary embodiment, as shown in FIG10 , the light-emitting structure layer 103 may further include a pixel definition layer 306. The pixel definition layer 306 may have multiple opening regions, which may include at least a first opening region 306-1, a second opening region 306-2, a third opening region 306-3, and a fourth opening region 306-4. In the embodiment of the present disclosure, the first opening region is the aforementioned first light-emitting region, the second opening region is the aforementioned second light-emitting region, the third opening region is the aforementioned third light-emitting region, and the fourth opening region is the aforementioned fourth light-emitting region.

[0175] The pixel definition layer 306 may include a plurality of partitions 306a, which may be arranged around the opening region. The structures of the plurality of partitions 306a may be the same or different. Light emitted by the first light-emitting device 301 may be emitted through the corresponding first opening region 306-1. Light emitted by the second light-emitting device 302 may be emitted through the corresponding second opening region 306-2. Light emitted by the third light-emitting device 303 may be emitted through the corresponding third opening region 306-3. Light emitted by the fourth light-emitting device 304 may be emitted through the corresponding fourth opening region 306-4.

[0176] In an exemplary embodiment, the separator 306a may include multiple film layers. For example, the separator 306a may include three film layers. The multiple film layers constituting the separator 306a may form an undercut structure, which can reduce the size of the separator, increase the aperture ratio of the display substrate, and facilitate disconnection of the organic light-emitting layer at the separator, thereby preventing crosstalk between adjacent sub-pixels and improving the display quality of the display product. The separator with an undercut structure can also prevent cathode puncture or fracture caused by deformation of its edges.

[0177] In an exemplary embodiment, the partition 306a may include multiple film layers, and the materials of the multiple film layers may include silicon oxide (SiO x ) and silicon nitride (SiN x ), etc. For example, the silicon oxide may be silicon oxide, and the silicon nitride may be silicon nitride. For example, the partition 306a may be a composite film structure of silicon oxide, silicon nitride, and silicon oxide. Designing the materials of the multiple film layers to be different can facilitate the formation of an undercut structure in the partition.

[0178] In an exemplary embodiment, the first encapsulation layer 104 may adopt a thin film encapsulation (TFE) method to ensure that external water vapor cannot enter the light-emitting structure layer. In one example, the first encapsulation layer 104 may include a first encapsulation sublayer, a second encapsulation sublayer and a third encapsulation sublayer, and the second encapsulation sublayer may be located between the first encapsulation sublayer and the third encapsulation sublayer. The materials of the first encapsulation sublayer and the third encapsulation sublayer may both be inorganic materials, and the material of the second encapsulation sublayer may be organic materials. The first encapsulation layer 104 forms a laminated structure of inorganic material / organic material / inorganic material, which can ensure that external water vapor cannot enter the light-emitting structure layer and improve the reliability of the light-emitting structure layer. For example, the inorganic material is, for example, silicon oxynitride (SiO x N y ) or silicon nitride (SiN x ) or silicon oxide (SiO x) etc. Organic materials, for example, any one or more of epoxy resin, phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, furan resin, silicone resin, polyester resin, polyamide resin, acrylic resin, polyurethane, vinyl resin, hydrocarbon resin, polyether resin, etc.

[0179] In one exemplary embodiment, the thickness of the first encapsulation layer 104 may range from 8.0 microns to 20 microns.

[0180] In an exemplary embodiment, the touch structure layer 105 may include multiple touch electrodes, each of which may include at least a drive (Tx) electrode and a sense (Rx) electrode. For example, the touch electrodes may be in the form of transparent conductive electrodes. For example, the touch electrodes may be in the form of a metal grid, wherein the metal grid is formed by interweaving multiple metal wires, and the metal grid includes multiple grid patterns, each of which may be a polygon formed by multiple metal wires. Metal grid touch electrodes have advantages such as low resistance, small thickness, and fast response speed.

[0181] In an exemplary embodiment, the color filter structure layer 106 may include a black matrix (BM) and a plurality of color filters (CF), and the black matrix may be located between two adjacent color filters. The plurality of color filters (CF) may include at least a first color filter 601, a second color filter 602, a third color filter 603, and a fourth color filter 604. The first sub-pixel P1 includes a first color filter 601, and the first color filter 601 is configured to allow only light of the first color to be emitted. The second sub-pixel P2 includes a second color filter 602, and the second color filter 602 is configured to allow only light of the second color to be emitted. The third sub-pixel P3 includes a third color filter 603, and the third color filter 603 is configured to allow only light of the third color to be emitted. The fourth sub-pixel P4 includes a fourth color filter 604, and the fourth color filter 604 is configured to allow only light of the fourth color to be emitted.

[0182] In an exemplary embodiment, the orthographic projection of the first color filter 601 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the first opening area 306-1 on the plane of the substrate 101. For example, the orthographic projection of the first color filter 601 on the plane of the substrate 101 may include the orthographic projection of the first opening area 306-1 on the plane of the substrate 101, thereby increasing the light-emitting area of ​​the color filter structure layer. The orthographic projection of the second color filter 602 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the second opening area 306-2 on the plane of the substrate 101. For example, the orthographic projection of the second color filter 602 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the second opening area 306-2 on the plane of the substrate 101, thereby increasing the light-emitting area of ​​the color filter structure layer. The orthographic projection of the third color filter 603 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the third opening area 306-3 on the plane of the substrate 101. For example, the orthographic projection of the third color filter 603 on the plane of the substrate 101 may include the orthographic projection of the third opening area 306-3 on the plane of the substrate 101, thereby increasing the light-emitting area of ​​the color filter structure layer. The orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening area 306-4 on the plane of the substrate 101. For example, the orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening area 306-4 on the plane of the substrate 101, thereby increasing the light-emitting area of ​​the color filter structure layer.

[0183] In an exemplary embodiment, as shown in FIG10 , the display substrate may further include a protective layer 109 (over coating, abbreviated as OC). The protective layer 109 may be located on the side of the color filter structure layer 106 away from the base substrate 101. The orthographic projection of the protective layer 109 on the plane of the base substrate 101 may include the orthographic projection of the color filter structure layer 106 on the plane of the base substrate 101. The protective layer 109 can prevent water, oxygen, and other factors from corroding the color filter structure layer, thereby improving the reliability of the display substrate. The material of the protective layer 109 may include optically clear adhesive (OCA), etc. For example, the thickness of the protective layer 109 may range from 2.0 microns to 5.0 microns.

[0184] In an exemplary embodiment, as shown in FIG10 , the display substrate may further include a light-regulating layer 110, which may be located on a side of the protective layer 109 away from the base substrate 101. The light-regulating layer 110 may include a polarizer (POL) to prevent glare from occurring on the display substrate.

[0185] Figure 11 shows a display spectrum curve of a display device according to an embodiment of the present disclosure and a response spectrum curve of a night vision imaging system. In Figure 11, the curve labeled ① is the response spectrum curve of the night vision imaging system, and the curve labeled ② is the spectrum curve displayed by the display device according to an embodiment of the present disclosure in night vision mode. As shown in Figure 11, in night vision mode, the displayed spectrum curve and the response spectrum curve of the night vision imaging system do not interfere with each other, and the night vision imaging system can operate normally.

[0186] Figure 12 is a schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure. As shown in Figure 12, only the first subpixel P1 and the fourth subpixel P4 are shown. The first subpixel P1 may include a first light-emitting unit 1, which may include a first light-emitting device 301 and a first color filter 601. The first light-emitting device 301 may include a first electrode 301-1, a first organic light-emitting layer 301-3, and a second electrode 301-2. The first organic light-emitting layer 301-3 emits light when driven by the first and second electrodes 301-1 and 301-2. Along the thickness direction of the display substrate, the first subpixel P1 has a first microcavity length H1, the first organic light-emitting layer 301-3 has a first dimension L1, and the first electrode 301-1 has a first thickness h1. The fourth subpixel P4 may include a fourth light-emitting unit 4, which may include a fourth light-emitting device 304 and a fourth color filter 604. The fourth light-emitting device 304 may include a seventh electrode 304-7, a fourth organic light-emitting layer 304-9, and an eighth electrode 304-8. The fourth organic light-emitting layer 304-9 emits light when driven by the seventh and eighth electrodes 304-7 and 304-8. Along the thickness of the display substrate, the fourth subpixel P4 has a fourth microcavity length H4, the fourth organic light-emitting layer 304-9 has a fourth dimension L4, and the seventh electrode 304-7 has a seventh thickness h7. The first microcavity length H1 is greater than the fourth microcavity length H4, the first dimension L1 is equal to the fourth dimension L4, and the first thickness h1 is greater than the seventh thickness h7. In the disclosed embodiments, the anode of the light-emitting device can adjust the microcavity length, simplifying the preparation process of the organic light-emitting layer.

[0187] In some possible exemplary embodiments, the first thickness h1 is equal to the seventh thickness h7.

[0188] In one exemplary embodiment, the material of the seventh electrode 304-7 includes at least one metal material other than silver. For example, the material of the seventh electrode 304-7 may include ITO, or the seventh electrode 304-7 may be ITO / ITO. The fact that the seventh electrode 304-7 does not include silver eliminates the microcavity effect of the fourth sub-pixel, broadens the full width at half maximum of the fourth sub-pixel's emission spectrum, increases the wavelength range of the fourth sub-pixel, improves the light extraction efficiency of the fourth sub-pixel, and enhances the night vision capability of the display device.

[0189] In one exemplary embodiment, the first electrode 301-1 and the seventh electrode 304-7 may both have a multi-layer structure, with the first electrode 301-1 having a greater number of layers than the seventh electrode 304-7. Examples of multi-layer structures include ITO / Ag / ITO, Ti / Al / Ti, Mo / Nb / Cu, MoNiTi / Cu, MoNb / Cu / MoNiTi, or MoNiTi / Cu / MoNiTi. For example, the first electrode 301-1 may be ITO / Ag / ITO, and the seventh electrode 304-7 may be ITO / ITO.

[0190] In one exemplary embodiment, as shown in FIG12 , the color filter structure layer 106 may include a first color filter 601. The orthographic projection of the first color filter 601 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the first opening region 306-1 on the plane of the substrate 101. For example, the orthographic projection of the first color filter 601 on the plane of the substrate 101 may include the orthographic projection of the first opening region 306-1 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The first color filter 601 has a first edge 11, and the first opening region 306-1 has a second edge 12. The orthographic projection of the first edge 11 on the plane of the substrate 101 may surround the orthographic projection of the second edge 12 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns, thereby increasing the light emission area of ​​the color filter structure layer and achieving a higher pixel density. In the embodiment of the present disclosure, the first opening area is also the aforementioned first light-emitting area, the second opening area is also the aforementioned second light-emitting area, the third opening area is also the aforementioned third light-emitting area, and the fourth opening area is also the aforementioned fourth light-emitting area.

[0191] In an exemplary embodiment, the orthographic projection of the edge of the second color filter on the plane where the substrate is located can surround the orthographic projection of the edge of the second opening area on the plane where the substrate is located, and there is a gap between the orthographic projections of the two, and the range of the gap can be greater than 0 and less than or equal to 5.0 microns.

[0192] In an exemplary embodiment, the orthographic projection of the edge of the third color filter on the plane where the substrate is located can surround the orthographic projection of the edge of the third opening area on the plane where the substrate is located, and there is a gap between the orthographic projections of the two, and the range of the gap can be greater than 0 and less than or equal to 5.0 microns.

[0193] In one exemplary embodiment, as shown in FIG. 12 , the color filter structure layer 106 may include a fourth color filter 604. The orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101. For example, the orthographic projection of the fourth color filter 604 on the plane of the substrate 101 may include the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The fourth color filter 604 has a third edge 13, and the fourth opening region 306-4 has a fourth edge 14. The orthographic projection of the third edge 13 on the plane of the substrate 101 may surround the orthographic projection of the fourth edge 14 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns. This increases the light emission area of ​​the color filter structure layer and achieves a higher pixel density.

[0194] In some possible exemplary embodiments, the display substrate may further include two protective layers, one protective layer may be located on the side of the color filter structure layer 106 away from the base substrate 101, and the other protective layer may be located between the touch structure layer 105 and the color filter structure layer 106, which may enhance the ability of the display substrate to resist water and oxygen.

[0195] Figure 13 is a second schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure. As shown in Figure 13 , only the first subpixel P1 and the fourth subpixel P4 are illustrated. The first subpixel P1 may include a first light-emitting device 301. Along the thickness direction of the display substrate, the first subpixel P1 has a first microcavity length H1, the first organic light-emitting layer 301-3 has a first dimension L1, and the first electrode 301-1 has a first thickness h1. The fourth subpixel P4 may include a fourth light-emitting device 304. Along the thickness direction of the display substrate, the fourth subpixel P4 has a fourth microcavity length H4, the fourth organic light-emitting layer 304-9 has a fourth dimension L4, and the seventh electrode 304-7 has a seventh thickness h7. The first microcavity length H1 is greater than the fourth microcavity length H4, the first dimension L1 is equal to the fourth dimension L4, and the first thickness h1 is greater than the seventh thickness h7.

[0196] In some possible exemplary embodiments, the first thickness h1 is equal to the seventh thickness h7.

[0197] In one exemplary embodiment, as shown in FIG. 13 , the color filter structure layer 106 may include a fourth color filter 604. The orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101. For example, the orthographic projection of the fourth color filter 604 on the plane of the substrate 101 may include the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The fourth color filter 604 has a third edge 13, and the fourth opening region 306-4 has a fourth edge 14. The orthographic projection of the third edge 13 on the plane of the substrate 101 may surround the orthographic projection of the fourth edge 14 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns, thereby increasing the light emission area of ​​the color filter structure layer and achieving a higher pixel density.

[0198] Figure 14 is a third schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure. As shown in Figure 14 , only the first subpixel P1 and the fourth subpixel P4 are illustrated. The first subpixel P1 may include a first light-emitting device 301. Along the thickness direction of the display substrate, the first subpixel P1 has a first microcavity length H1, the first organic light-emitting layer 301-3 has a first dimension L1, and the first electrode 301-1 has a first thickness h1. The fourth subpixel P4 may include a fourth light-emitting device 304. Along the thickness direction of the display substrate, the fourth subpixel P4 has a fourth microcavity length H4, the fourth organic light-emitting layer 304-9 has a fourth dimension L4, and the seventh electrode 304-7 has a seventh thickness h7. The first microcavity length H1 is equal to the fourth microcavity length H4, the first dimension L1 is equal to the fourth dimension L4, and the first thickness h1 is equal to the seventh thickness h7.

[0199] In one exemplary embodiment, as shown in FIG. 14 , the color filter structure layer 106 may include a first color filter 601. The orthographic projection of the first color filter 601 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the first opening region 306-1 on the plane of the substrate 101. For example, the orthographic projection of the first color filter 601 on the plane of the substrate 101 may include the orthographic projection of the first opening region 306-1 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The first color filter 601 has a first edge 11, and the first opening region 306-1 has a second edge 12. The orthographic projection of the first edge 11 on the plane of the substrate 101 may surround the orthographic projection of the second edge 12 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns, thereby increasing the light emission area of ​​the color filter structure layer and achieving a higher pixel density.

[0200] In one exemplary embodiment, as shown in FIG. 14 , the color filter structure layer 106 may include a fourth color filter 604. The orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101. For example, the orthographic projection of the fourth color filter 604 on the plane of the substrate 101 may include the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The fourth color filter 604 has a third edge 13, and the fourth opening region 306-4 has a fourth edge 14. The orthographic projection of the third edge 13 on the plane of the substrate 101 may surround the orthographic projection of the fourth edge 14 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns. This increases the light emission area of ​​the color filter structure layer and achieves a higher pixel density.

[0201] Figure 15 is a fourth schematic diagram of a partial cross-sectional structure of a display device according to an embodiment of the present disclosure. As shown in Figure 15 , only the first subpixel P1 and the fourth subpixel P4 are illustrated. The first subpixel P1 may include a first light-emitting device 301. Along the thickness direction of the display substrate, the first subpixel P1 has a first microcavity length H1, the first organic light-emitting layer 301-3 has a first dimension L1, and the first electrode 301-1 has a first thickness h1. The fourth subpixel P4 may include a fourth light-emitting device 304. Along the thickness direction of the display substrate, the fourth subpixel P4 has a fourth microcavity length H4, the fourth organic light-emitting layer 304-9 has a fourth dimension L4, and the seventh electrode 304-7 has a seventh thickness h7. The first microcavity length H1 is equal to the fourth microcavity length H4, the first dimension L1 is equal to the fourth dimension L4, and the first thickness h1 is equal to the seventh thickness h7.

[0202] In one exemplary embodiment, as shown in FIG. 15 , the color filter structure layer 106 may include a fourth color filter 604. The orthographic projection of the fourth color filter 604 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101. For example, the orthographic projection of the fourth color filter 604 on the plane of the substrate 101 may include the orthographic projection of the fourth opening region 306-4 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. The fourth color filter 604 has a third edge 13, and the fourth opening region 306-4 has a fourth edge 14. The orthographic projection of the third edge 13 on the plane of the substrate 101 may surround the orthographic projection of the fourth edge 14 on the plane of the substrate 101, with a gap between the orthographic projections. The gap may be greater than 0 and less than or equal to 5.0 microns. This increases the light emission area of ​​the color filter structure layer and achieves a higher pixel density.

[0203] In an exemplary embodiment, as shown in FIG15 , the display substrate may further include a light-regulating layer 110, which may be located on a side of the protective layer 109 away from the base substrate 101. The light-regulating layer 110 may include a polarizer (POL), which may prevent glare from occurring on the display substrate.

[0204] In some possible exemplary embodiments, the fourth microcavity length H4 may be equal to a non-integer multiple of the peak wavelength of the fourth color light. The fourth microcavity may form a weak microcavity. For example, the fourth microcavity length H4 may be equal to 1.5 times the peak wavelength of the fourth color light, or 2.2 times the peak wavelength of the fourth color light. The peak wavelength of the fourth color light ranges from 525 nanometers to 585 nanometers.

[0205] FIG16 is a schematic diagram of a partial cross-sectional structure of a display device according to another embodiment of the present disclosure. As shown in FIG16 , taking only one pixel unit as an example, the pixel unit may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, and a third sub-pixel P3 that emits a third color light. The first sub-pixel P1 may include a first light-emitting unit 1, which is configured to emit a first color light. The second sub-pixel P2 may include a second light-emitting unit 2, which is configured to emit a second color light. The third sub-pixel P3 may include a third light-emitting unit 3, which is configured to emit a third color light.

[0206] In one exemplary embodiment, as shown in FIG16 , the first light-emitting device 301 may include a first electrode 301-1, a first organic light-emitting layer 301-3, and a second electrode 301-2. The first electrode 301-1 may be located in the anode layer, the first organic light-emitting layer 301-3 may be located in the organic light-emitting layer, and the second electrode 301-2 may be located in the cathode layer. The first electrode 301-1 may be connected to the second electrode of the transistor via a first connecting electrode, the first organic light-emitting layer 301-3 may be connected to the first electrode 301-1, and the second electrode 301-2 may be connected to the first organic light-emitting layer 301-3. The second electrode 301-2 may be connected to a second power line. The first organic light-emitting layer 301-3 emits light when driven by the first and second electrodes 301-1 and 301-2. In an embodiment of the present disclosure, the second power line is configured to continuously provide a low-level signal to the light-emitting device. The first electrode 301-1 may be the anode of the first light-emitting device 301, and the second electrode 301-2 may be the cathode of the first light-emitting device 301.

[0207] In one exemplary embodiment, as shown in FIG16 , the second light-emitting device 302 may include a third electrode 302-3, a second organic light-emitting layer 302-5, and a fourth electrode 302-4. The third electrode 302-3 may be located in the anode layer, the second organic light-emitting layer 302-5 may be located in the organic light-emitting layer, and the fourth electrode 302-4 may be located in the cathode layer. The third electrode 302-3 may be connected to the second electrode of the transistor via a second connecting electrode, the second organic light-emitting layer 302-5 may be connected to the third electrode 302-3, and the fourth electrode 302-4 may be connected to the second organic light-emitting layer 302-5. The fourth electrode 302-4 may be connected to a second power line. The second organic light-emitting layer 302-5 emits light when driven by the third electrode 302-3 and the fourth electrode 302-4. The third electrode 302-3 may be the anode of the second light-emitting device 302, and the fourth electrode 302-4 may be the cathode of the second light-emitting device 302.

[0208] In one exemplary embodiment, as shown in FIG16 , the third light-emitting device 303 may include a fifth electrode 303-5, a third organic light-emitting layer 303-7, and a sixth electrode 303-6. The fifth electrode 303-5 may be located in the anode layer, the third organic light-emitting layer 303-7 may be located in the organic light-emitting layer, and the sixth electrode 303-6 may be located in the cathode layer. The fifth electrode 303-5 may be connected to the second electrode of the transistor via a third connecting electrode, the third organic light-emitting layer 303-7 may be connected to the fifth electrode 303-5, the sixth electrode 303-6 may be connected to the third organic light-emitting layer 303-7, and the sixth electrode 303-6 may be connected to a second power line. The third organic light-emitting layer 303-7 emits light when driven by the fifth and sixth electrodes 303-5, 303-6. The fifth electrode 303-5 may be the anode of the third light-emitting device 303, and the sixth electrode 303-6 may be the cathode of the third light-emitting device 303.

[0209] In one exemplary embodiment, as shown in FIG16 , along the thickness direction of the display substrate, the first subpixel P1 has a first microcavity length H1, the first organic light-emitting layer 301-3 has a first dimension L1, and the first electrode 301-1 has a first thickness h1. The second subpixel P2 has a second microcavity length H2, the second organic light-emitting layer 302-5 has a second dimension L2, and the third electrode 302-3 has a third thickness h3. The third subpixel P3 has a third microcavity length H3, the third organic light-emitting layer 303-7 has a third dimension L3, and the fifth electrode 303-5 has a fifth thickness h5. The first microcavity length H1 is equal to the second microcavity length H2, and the first microcavity length H1 is equal to the third microcavity length H3. The first dimension L1 is equal to the second dimension L2, and the first dimension L1 is equal to the third dimension L3. The first thickness h1 is equal to the third thickness h3, and the first thickness h1 is equal to the fifth thickness h5.

[0210] In one exemplary embodiment, as shown in FIG16 , the color filter structure layer 106 may include a first color filter 601, wherein the orthographic projection of the first color filter 601 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the first opening region 306-1 on the plane of the substrate 101. For example, the orthographic projection of the first color filter 601 on the plane of the substrate 101 may include the orthographic projection of the first opening region 306-1 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. As shown in FIG16 , the color filter structure layer 106 may include a second color filter 602, wherein the orthographic projection of the second color filter 602 on the plane of the substrate 101 at least partially overlaps with the orthographic projection of the second opening region 306-2 on the plane of the substrate 101. For example, the orthographic projection of the second color filter 602 on the plane of the substrate 101 may include the orthographic projection of the second opening region 306-2 on the plane of the substrate 101, thereby increasing the light emission area of ​​the color filter structure layer. As shown in Figure 16, the color filter structure layer 106 may include a third color filter 603, and the orthographic projection of the third color filter 603 on the plane where the base substrate 101 is located is at least partially overlapped with the orthographic projection of the third opening area 306-3 on the plane where the base substrate 101 is located. For example, the orthographic projection of the third color filter 603 on the plane where the base substrate 101 is located may include the orthographic projection of the third opening area 306-3 on the plane where the base substrate 101 is located, which can increase the light output area of ​​the color filter structure layer.

[0211] In one exemplary embodiment, the first color filter 601 has a first edge 11, and the first opening region 306-1 has a second edge 12. The orthographic projection of the first edge 11 on the plane of the substrate 101 can surround the orthographic projection of the second edge 12 on the plane of the substrate 101, with a gap between the two orthographic projections. The gap can range from greater than 0 to less than or equal to 5.0 microns, thereby increasing the light-emitting area of ​​the color filter structure layer and achieving a higher pixel density. The orthographic projection of the edge of the second color filter on the plane of the substrate can surround the orthographic projection of the edge of the second opening region on the plane of the substrate, with a gap between the two orthographic projections. The gap can range from greater than 0 to less than or equal to 5.0 microns. The orthographic projection of the edge of the third color filter on the plane of the substrate can surround the orthographic projection of the edge of the third opening region on the plane of the substrate, with a gap between the two orthographic projections. The gap can range from greater than 0 to less than or equal to 5.0 microns.

[0212] In an exemplary embodiment, as shown in FIG16 , the display substrate may further include a protective layer 109 (overcoating, abbreviated as OC). The protective layer 109 may be located on the side of the color filter structure layer 106 away from the base substrate 101. The orthographic projection of the protective layer 109 on the plane of the base substrate 101 may include the orthographic projection of the color filter structure layer 106 on the plane of the base substrate 101. The protective layer 109 can prevent corrosion of the color filter structure layer by water, oxygen, etc., thereby improving the reliability of the display substrate. The material of the protective layer 109 may include optically clear adhesive (OCA), etc. For example, the thickness of the protective layer 109 may range from 2.0 microns to 5.0 microns.

[0213] In an exemplary embodiment, as shown in FIG16 , the display substrate may further include a cutoff layer 111. The cutoff layer 111 may be located on a side of the protective layer 109 away from the base substrate 101. The cutoff layer 111 is configured to prevent light with a wavelength of 630 nanometers or greater from emitting from the display device. For example, the cutoff layer 111 may include an infrared cutoff filter. The orthographic projection of the cutoff layer 111 on the plane of the base substrate 101 at least partially overlaps with the orthographic projection of the first opening area 306-1 on the plane of the base substrate 101. For example, the orthographic projection of the cutoff layer 111 on the plane of the base substrate 101 may include the orthographic projection of the first opening area 306-1 on the plane of the base substrate 101. In the disclosed embodiment, by providing the cutoff layer, the display substrate does not need to be provided with a fourth light-emitting unit. The cutoff layer can prevent light with a wavelength of 630 nanometers or greater from emitting from the display device, thereby preventing light emitted by the display device from interfering with the night vision device. The night vision device can function normally, allowing the user to use the night vision device and the display device simultaneously, thereby improving the compatibility of the display device and the night vision device.

[0214] In an exemplary embodiment, as shown in FIG16 , the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located at least partially overlaps with the orthographic projection of the second opening area 306 - 2 on the plane where the base substrate 101 is located. For example, the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located may include the orthographic projection of the second opening area 306 - 2 on the plane where the base substrate 101 is located.

[0215] In an exemplary embodiment, as shown in FIG16 , the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located at least partially overlaps with the orthographic projection of the third opening area 306 - 3 on the plane where the base substrate 101 is located. For example, the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located may include the orthographic projection of the third opening area 306 - 3 on the plane where the base substrate 101 is located.

[0216] In one exemplary embodiment, as shown in FIG16 , the display substrate may further include a cover layer 112. The cover layer 112 may be located on a side of the cutoff layer 111 away from the base substrate 101. For example, the cover layer 112 may be a cover window. The cover layer 112 may protect the display screen from external influences.

[0217] FIG17 is a second schematic diagram of a partial cross-sectional structure of a display device according to another embodiment of the present disclosure. As shown in FIG17 , taking only one pixel unit as an example, the pixel unit may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, and a third sub-pixel P3 that emits a third color light. The first sub-pixel P1 may include a first light-emitting unit 1, which is configured to emit a first color light. The second sub-pixel P2 may include a second light-emitting unit 2, which is configured to emit a second color light. The third sub-pixel P3 may include a third light-emitting unit 3, which is configured to emit a third color light.

[0218] In one exemplary embodiment, as shown in FIG17 , the display device may further include a cover layer 112, a light-regulating layer 110, and a cutoff layer 111 stacked in sequence, with the cutoff layer 111 being closer to the base substrate 101 than the cover layer 112. The cutoff layer 111 is configured to prevent light with a wavelength of 630 nanometers or greater from emitting from the display device. The orthographic projection of the cutoff layer 111 on the plane of the base substrate 101 at least partially overlaps with the orthographic projection of the first opening region 306-1 on the plane of the base substrate 101. For example, the orthographic projection of the cutoff layer 111 on the plane of the base substrate 101 may include the orthographic projection of the first opening region 306-1 on the plane of the base substrate 101. In the disclosed embodiment, by providing the cutoff layer, the display substrate does not need to be provided with a fourth light-emitting unit. The cutoff layer can prevent light with a wavelength of 630 nanometers or greater from emitting from the display device, thereby preventing light emitted by the display device from interfering with the night vision device, allowing the night vision device to function normally. The user can use the night vision device and the display device simultaneously, thereby improving the compatibility of the display device and the night vision device.

[0219] In an exemplary embodiment, as shown in FIG17 , the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located at least partially overlaps with the orthographic projection of the second opening area 306 - 2 on the plane where the base substrate 101 is located. For example, the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located may include the orthographic projection of the second opening area 306 - 2 on the plane where the base substrate 101 is located.

[0220] In an exemplary embodiment, as shown in FIG17 , the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located at least partially overlaps with the orthographic projection of the third opening area 306 - 3 on the plane where the base substrate 101 is located. For example, the orthographic projection of the cut-off layer 111 on the plane where the base substrate 101 is located may include the orthographic projection of the third opening area 306 - 3 on the plane where the base substrate 101 is located.

[0221] FIG18 is a schematic diagram of a planar structure of a display device according to another embodiment of the present disclosure. As shown in FIG18 , the display device may include a display substrate, which may include a plurality of pixel units P arranged in a matrix. At least one pixel unit P may include a plurality of sub-pixels. The plurality of sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, and a third sub-pixel P3 that emits a third color light. Each of the three sub-pixels may include a pixel driving circuit and a light-emitting unit. The pixel driving circuit in each sub-pixel is respectively connected to a scan signal line and a data signal line. The pixel driving circuit is configured to receive a data voltage transmitted by the data signal line under the control of the scan signal line and output a corresponding current to the light-emitting device in the light-emitting unit. The light-emitting devices in each sub-pixel are respectively connected to the pixel driving circuit of the sub-pixel. The light-emitting devices are configured to emit light of corresponding brightness in response to the current output by the pixel driving circuit of the sub-pixel.

[0222] As shown in FIG18 , the first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device. The orthographic projection shape of the first light-emitting region 10 on the plane where the display substrate is located may be any one of a triangle, rectangle, rhombus, trapezoid, parallelogram, pentagon, hexagon, or circle, and is not limited in this disclosure.

[0223] As shown in FIG. 18 , the first light emitting region 10 , the second light emitting region 20 , and the third light emitting region 30 may be arranged in sequence along the first direction X at intervals.

[0224] In an exemplary embodiment, within the same pixel unit, the minimum distance between the orthographic projection edges of two adjacent areas among the first light-emitting area 10 , the second light-emitting area 20 , and the third light-emitting area 30 on the plane where the display substrate is located may be 15 μm to 25 μm.

[0225] Figure 19 is a second schematic planar structural diagram of a display device according to another embodiment of the present disclosure. As shown in Figure 19, the first light-emitting region 10 and the second light-emitting region 20 can be arranged with a gap along the second direction Y, and the third light-emitting region 30 can be located to one side of the direction in which the first light-emitting region 10 and the second light-emitting region 20 extend. For example, the third light-emitting region 30 is located to one side of the first light-emitting region 10 in the first direction X.

[0226] FIG20 is a third schematic diagram of the planar structure of a display device according to another embodiment of the present disclosure. As shown in FIG20 , the display substrate may include a plurality of pixel units arranged in a matrix, at least one pixel unit may include a plurality of sub-pixels, and the plurality of sub-pixels may include at least a first sub-pixel P1 that emits a first color light, a second sub-pixel P2 that emits a second color light, and a third sub-pixel P3 that emits a third color light. The first color may be red, the second color may be green, and the third color may be blue. The first sub-pixel P1 may have a first light-emitting region 10, through which light may be emitted from the display device. The second sub-pixel P2 may have a second light-emitting region 20, through which light may be emitted from the display device. The third sub-pixel P3 may have a third light-emitting region 30, through which light may be emitted from the display device.

[0227] As shown in FIG20 , the plurality of pixel units may include a plurality of thirteenth pixel units P130, and the thirteenth pixel unit P130 may include a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3. A line connecting the center of the orthographic projection of the first light-emitting region 10 on the plane where the display substrate is located and the center of the orthographic projection of the second light-emitting region 20 on the plane where the display substrate is located is a first straight line L11, a line connecting the center of the orthographic projection of the second light-emitting region 20 on the plane where the display substrate is located and the center of the orthographic projection of the third light-emitting region 30 on the plane where the display substrate is located is a second straight line L22, and a line connecting the center of the orthographic projection of the third light-emitting region 30 on the plane where the display substrate is located and the center of the orthographic projection of the first light-emitting region 10 on the plane where the display substrate is located is a third straight line L33. The first straight line L11, the second straight line L22, and the third straight line L33 intersect to form a triangle. For example, the triangle may be an isosceles triangle.

[0228] As shown in FIG20 , the plurality of pixel units may include a plurality of fourteenth pixel units P140, and the fourteenth pixel unit P140 may include a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3. A line connecting the center of the orthographic projection of the first light-emitting region 10 on the plane where the display substrate is located and the center of the orthographic projection of the second light-emitting region 20 on the plane where the display substrate is located is a fourth straight line L44, a line connecting the center of the orthographic projection of the second light-emitting region 20 on the plane where the display substrate is located and the center of the orthographic projection of the third light-emitting region 30 on the plane where the display substrate is located is a fifth straight line L55, and a line connecting the center of the orthographic projection of the third light-emitting region 30 on the plane where the display substrate is located and the center of the orthographic projection of the first light-emitting region 10 on the plane where the display substrate is located is a sixth straight line L66. The fourth straight line L44, the fifth straight line L55, and the sixth straight line L66 intersect to form a triangle. For example, the triangle may be an isosceles triangle.

[0229] As shown in FIG20 , a plurality of thirteenth pixel units P130 and a plurality of fourteenth pixel units P140 may be alternately arranged in sequence along the first direction X. The first straight line L11 and the fifth straight line L55 may be parallel, the second straight line L22 and the fourth straight line L44 may be parallel, and the third straight line L33 and the sixth straight line L66 may be parallel.

[0230] FIG21 is a fourth schematic planar structural diagram of a display device according to another embodiment of the present disclosure. As shown in FIG21 , the plurality of pixel units may include a fifteenth pixel unit P150, a sixteenth pixel unit P160, and a seventeenth pixel unit P170, arranged sequentially along a first direction X. The fifteenth pixel unit P150 shares some sub-pixels with the sixteenth pixel unit P160, and the sixteenth pixel unit P160 shares some sub-pixels with the seventeenth pixel unit P170. In the present embodiment, the shared sub-pixels are referred to as shared sub-pixels, and the shared sub-pixels may include at least one of a first sub-pixel P1 and a third sub-pixel P3. For example, as shown in FIG21 , the fifteenth pixel unit P150 and the sixteenth pixel unit P160 share one third sub-pixel P3. The sixteenth pixel unit P160 and the seventeenth pixel unit P170 share one first sub-pixel P1. This arrangement can increase the pixel density of the display substrate and reduce the size of the display substrate.

[0231] Figure 22 is a schematic diagram of a planar structure of a display device according to another embodiment of the present disclosure. As shown in Figure 22, the plurality of pixel units may include at least one eighteenth pixel unit P180 and one nineteenth pixel unit P190. Each of the eighteenth pixel unit P180 and the nineteenth pixel unit P190 may include one first sub-pixel P1, two second sub-pixels P2, and one third sub-pixel P3. The two second sub-pixels P2 within the same eighteenth pixel unit P180 may be spaced apart along the second direction Y.

[0232] As shown in FIG22 , a plurality of eighteenth pixel units P180 and nineteenth pixel units P190 may be alternately arranged in sequence along the second direction Y. Adjacent eighteenth pixel units P180 and nineteenth pixel units P190 may share some sub-pixels. In the embodiment of the present disclosure, the shared sub-pixels are referred to as shared sub-pixels, and the shared sub-pixels may include at least one of the first sub-pixel P1 and the third sub-pixel P3. As shown in FIG22 , the first sub-pixel P1 and the third sub-pixel P3 in the adjacent eighteenth pixel units P180 and nineteenth pixel units P190 are shared, and the second sub-pixel P2 in the adjacent eighteenth pixel units P180 and nineteenth pixel units P190 are located on opposite sides of the first sub-pixel P1 and the third sub-pixel P3 along the second direction Y, respectively.

[0233] An embodiment of the present disclosure provides a display device, which includes the display substrate described in any of the aforementioned embodiments. The display device can be any product with a display function, such as a mobile terminal, a vehicle-mounted display screen, an aircraft-mounted display screen, or a navigator.

[0234] Although the embodiments disclosed herein are as described above, the contents described are merely embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. It should be noted that the above embodiments or implementations are merely illustrative and not restrictive. Therefore, the present disclosure is not limited to the contents specifically shown and described herein. Various modifications, substitutions, or omissions may be made to the forms and details of the implementations without departing from the scope of the present disclosure.

Claims

1. A display substrate, comprising a base substrate and a plurality of pixel units located on the base substrate; at least one pixel unit includes a plurality of light-emitting units, the plurality of light-emitting units including at least a first light-emitting unit emitting a first color light, a second light-emitting unit emitting a second color light, a third light-emitting unit emitting a third color light, and a fourth light-emitting unit emitting a fourth color light; the first light-emitting unit having a first light-emitting area, the second light-emitting unit having a second light-emitting area, the third light-emitting unit having a third light-emitting area, and the fourth light-emitting unit having a fourth light-emitting area; The first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are configured to emit light in a normal display mode; the second light-emitting unit, the third light-emitting unit, and the fourth light-emitting unit are configured to emit light in a night vision display mode, and the first light-emitting unit is configured not to emit light in the night vision display mode, and the first color is red; The first light-emitting region has a first light-emitting area, the fourth light-emitting region has a fourth light-emitting area, and the fourth light-emitting area is smaller than the first light-emitting area.

2. The display substrate according to claim 1, wherein: The ratio of the first light emitting area to the fourth light emitting area is in a range of 1:0.1 to 1:0.

5.

3. The display substrate according to claim 1, wherein: The arrangement of the plurality of first light-emitting areas, the plurality of second light-emitting areas, the plurality of third light-emitting areas, and the plurality of fourth light-emitting areas satisfies one of the following arrangement forms: First arrangement form: the first light-emitting area, the second light-emitting area, and the third light-emitting area are alternately arranged along a first direction, and the second light-emitting area and the fourth light-emitting area are alternately arranged along a second direction; Second arrangement form: the first light-emitting areas and the third light-emitting areas are alternately arranged along the first direction, the second light-emitting areas and the fourth light-emitting areas are alternately arranged along the first direction, the first light-emitting areas and the second light-emitting areas are alternately arranged along the second direction, and the third light-emitting areas and the fourth light-emitting areas are alternately arranged along the second direction; A third arrangement form: the first light-emitting area, the fourth light-emitting area, the third light-emitting area, and the fourth light-emitting area are alternately arranged in sequence along the first direction, and a plurality of second light-emitting areas are arranged in sequence along the first direction; the fourth light-emitting area and the second light-emitting area are alternately arranged along the second direction, and the first light-emitting area and the third light-emitting area are alternately arranged along the second direction; Fourth arrangement form: the first light-emitting areas and the third light-emitting areas are alternately arranged in sequence along the first direction, and the first light-emitting areas, the fourth light-emitting areas, and the third light-emitting areas are alternately arranged in sequence along the second direction, and a plurality of second light-emitting areas are arranged in sequence along the second direction; A fifth arrangement form: the third light-emitting area, the first light-emitting area, and two second light-emitting areas are alternately arranged along the first direction, two second light-emitting areas are arranged along the second direction, and a plurality of fourth light-emitting areas are arranged along the second direction; The plane formed by the intersection of the first direction and the second direction is parallel to the plane where the base substrate is located.

4. The display substrate according to any one of claims 1 to 3, wherein: In at least one pixel unit, the orthographic projections of the first light-emitting area, the second light-emitting area, the third light-emitting area, and the fourth light-emitting area on the plane where the substrate is located do not overlap; a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a first line, and a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is a second line, and the first line is parallel to the second line.

5. The display substrate according to any one of claims 1 to 3, wherein: The at least one pixel unit includes at least one first pixel unit; in the first pixel unit, a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a first straight line, a line connecting the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located is a second straight line, a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located is a third straight line, and the first straight line, the second straight line and the third straight line intersect to form a triangle, and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is located within the triangle.

6. The display substrate according to claim 5, wherein: The center of the orthographic projection of the fourth light-emitting area on the plane where the base substrate is located coincides with the center of the triangle.

7. The display substrate according to claim 5, wherein: The at least one pixel unit further includes at least one second pixel unit; in the second pixel unit, a line connecting the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located is a fourth straight line, a line connecting the center of the orthographic projection of the second light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located is a fifth straight line, and a line connecting the center of the orthographic projection of the third light-emitting area on the plane where the substrate is located and the center of the orthographic projection of the first light-emitting area on the plane where the substrate is located is a sixth straight line, the fourth straight line, the fifth straight line, and the sixth straight line intersect to form a triangle, and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located is located within the triangle; The first straight line is parallel to the fifth straight line, the second straight line is parallel to the fourth straight line, and the third straight line is parallel to the sixth straight line.

8. The display substrate according to claim 7, wherein: A plurality of the first pixel units and a plurality of the second pixel units are alternately arranged in sequence along a first direction.

9. The display substrate according to any one of claims 1 to 3, wherein: Each of the pixel units includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, wherein the first sub-pixel includes a first light-emitting unit, the second sub-pixel includes a second light-emitting unit, the third sub-pixel includes a third light-emitting unit, and the fourth sub-pixel includes a fourth light-emitting unit; the plurality of pixel units are arranged sequentially along a first direction; Part of the sub-pixels of two adjacent pixel units are shared.

10. The display substrate according to claim 9, wherein: The shared sub-pixel includes at least one of the first sub-pixel, the third sub-pixel, and the fourth sub-pixel.

11. The display substrate according to claim 10, wherein: The plurality of pixel units include at least a third pixel unit, a fourth pixel unit and a fifth pixel unit arranged in sequence along the first direction; the third pixel unit and the fourth pixel unit share the third sub-pixel, and the fourth pixel unit and the fifth pixel unit share the first sub-pixel.

12. The display substrate according to claim 10, wherein: The plurality of pixel units include at least a sixth pixel unit, a seventh pixel unit and an eighth pixel unit arranged in sequence along the first direction; the sixth pixel unit and the seventh pixel unit share the third sub-pixel, and the seventh pixel unit and the eighth pixel unit share the first sub-pixel and the fourth sub-pixel.

13. The display substrate according to claim 9, wherein: Each of the pixel units includes one first sub-pixel, two second sub-pixels, one third sub-pixel, and one fourth sub-pixel.

14. The display substrate according to claim 13, wherein: The shared sub-pixel includes at least one of the first sub-pixel, the third sub-pixel, and the fourth sub-pixel.

15. The display substrate according to any one of claims 1 to 3, wherein: There is a first minimum distance between the orthographic projection of the first light-emitting area on the plane where the substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located, there is a second minimum distance between the orthographic projection of the second light-emitting area on the plane where the substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located, and there is a third minimum distance between the orthographic projection of the third light-emitting area on the plane where the substrate is located and the orthographic projection of the fourth light-emitting area on the plane where the substrate is located; wherein, at least two of the first minimum distance, the second minimum distance and the third minimum distance are equal.

16. The display substrate according to any one of claims 1 to 3, wherein: The at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; the first sub-pixel includes the first light-emitting unit and has a first microcavity length H1; the second sub-pixel includes the second light-emitting unit and has a second microcavity length H2; the third sub-pixel includes the third light-emitting unit and has a third microcavity length H3; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein H1 is greater than H4, H4 is greater than H2, and H2 is greater than H3.

17. The display substrate according to claim 16, wherein: The first light-emitting unit includes a first light-emitting device, and the first light-emitting device includes a first organic light-emitting layer; the second light-emitting unit includes a second light-emitting device, and the second light-emitting device includes a second organic light-emitting layer; the third light-emitting unit includes a third light-emitting device, and the third light-emitting device includes a third organic light-emitting layer; the fourth light-emitting unit includes a fourth light-emitting device, and the fourth light-emitting device includes a fourth organic light-emitting layer; along a direction perpendicular to the plane of the substrate, the first organic light-emitting layer has a first size L1, the second organic light-emitting layer has a second size L2, the third organic light-emitting layer has a third size L3, and the fourth organic light-emitting layer has a fourth size L4; wherein L1 is greater than L4, L4 is greater than L2, and L2 is greater than L3.

18. The display substrate according to claim 16, wherein: The first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence, and the first electrode is closer to the base substrate than the second electrode; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode; Along a direction perpendicular to the plane of the substrate, the first electrode has a first thickness h1, and the seventh electrode has a seventh thickness h7, wherein h1 is greater than or equal to h7.

19. The display substrate according to claim 18, wherein: The number of layers of the seventh electrode film is less than the number of layers of the first electrode film.

20. The display substrate according to any one of claims 1 to 3, wherein: The fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode; wherein the material of the seventh electrode includes at least one metal material other than silver.

21. The display substrate according to any one of claims 1 to 3, wherein: The at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; the first sub-pixel includes the first light-emitting unit and has a first microcavity length H1; the second sub-pixel includes the second light-emitting unit and has a second microcavity length H2; the third sub-pixel includes the third light-emitting unit and has a third microcavity length H3; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein H1 is equal to H4, H4 is greater than H2, and H2 is greater than H3.

22. The display substrate according to claim 21, wherein The first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence, and the first electrode is closer to the base substrate than the second electrode; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the seventh electrode is closer to the base substrate than the eighth electrode; wherein the first electrode and the seventh electrode are of the same layer structure.

23. The display substrate according to any one of claims 1 to 3, wherein: The first light-emitting unit includes a first light-emitting device, which includes a first electrode, a first organic light-emitting layer, and a second electrode stacked in sequence; the fourth light-emitting unit includes a fourth light-emitting device, which includes a seventh electrode, a fourth organic light-emitting layer, and an eighth electrode stacked in sequence, and the first light-emitting device and the fourth light-emitting device emit light of the same color; The fourth light-emitting unit also includes a fourth color filter, which is located on a side of the fourth light-emitting device away from the base substrate. The fourth color filter and the fourth light-emitting area at least partially overlap in their orthographic projection on the plane where the base substrate is located, and the fourth color filter is configured to make the fourth light-emitting unit emit a fourth color light.

24. The display substrate according to claim 23, wherein: The first light emitting device and the fourth light emitting device both emit red light.

25. The display substrate according to any one of claims 1 to 3, wherein: The at least one pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; the fourth sub-pixel includes the fourth light-emitting unit and has a fourth microcavity length H4; wherein the fourth microcavity length H4 is equal to a non-integer multiple of the peak wavelength of the fourth color light; the peak wavelength range of the fourth color light is 525 nanometers to 585 nanometers.

26. The display substrate according to any one of claims 1 to 3, wherein: In the same pixel unit, a minimum distance between edges of orthographic projections of two adjacent areas among the first light-emitting area, the second light-emitting area, the third light-emitting area, and the fourth light-emitting area on the plane where the substrate is located is 15 microns to 25 microns.

27. The display substrate according to any one of claims 1 to 3, wherein: The first light-emitting unit includes a first color filter and a first light-emitting device, the second light-emitting unit includes a second color filter and a second light-emitting device, the third light-emitting unit includes a third color filter and a third light-emitting device, and the fourth light-emitting unit includes a fourth color filter and a fourth light-emitting device; The first color filter is located on a side of the first light-emitting device away from the base substrate, and the first color filter and the first light-emitting area at least partially overlap in an orthographic projection on a plane where the base substrate is located, and the first color filter is configured to cause the first light-emitting unit to emit light of a first color; The second color filter is located on a side of the second light-emitting device away from the base substrate, and the second color filter and the second light-emitting area at least partially overlap in an orthographic projection on a plane where the base substrate is located, and the second color filter is configured to cause the second light-emitting unit to emit a second color light; The third color filter is located on a side of the third light-emitting device away from the base substrate, and the orthographic projections of the third color filter and the third light-emitting region on the plane where the base substrate is located at least partially overlap, and the third color filter is configured to cause the third light-emitting unit to emit a third color light; The fourth color filter is located on a side of the fourth light-emitting device away from the base substrate, and the fourth color filter and the fourth light-emitting area at least partially overlap in their orthographic projection on the plane where the base substrate is located, and the fourth color filter is configured to make the fourth light-emitting unit emit fourth color light.

28. The display substrate according to claim 27, wherein: The orthographic projection of the edge of the first color filter on the plane where the base substrate is located surrounds the orthographic projection of the edge of the first light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns; The orthographic projection of the edge of the second color filter on the plane where the base substrate is located surrounds the orthographic projection of the edge of the second light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns; The orthographic projection of the edge of the third color filter on the plane where the base substrate is located surrounds the orthographic projection of the edge of the third light-emitting area on the plane where the base substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns; The orthographic projection of the edge of the fourth color filter on the plane where the substrate is located surrounds the orthographic projection of the edge of the fourth light-emitting area on the plane where the substrate is located, and there is a gap between the orthographic projections of the two edges, and the range of the gap is greater than 0 and less than or equal to 5.0 microns.

29. The display substrate as described in any one of claims 1 to 3, further comprising a light extraction layer, a first encapsulation layer, a color filter structure layer and a protective layer located on one side of the base substrate; the first encapsulation layer is located on a side of the light extraction layer away from the base substrate, the color filter structure layer is located on a side of the first encapsulation layer away from the base substrate, the protective layer is located on a side of the color filter structure layer away from the base substrate, and the thickness of the protective layer ranges from 2.0 microns to 5.0 microns.

30. The display substrate according to any one of claims 1 to 3, wherein: The peak wavelength range of the first color light is 615 nanometers to 625 nanometers; the peak wavelength range of the second color light is 515 nanometers to 525 nanometers; the peak wavelength range of the third color light is 455 nanometers to 465 nanometers; and the peak wavelength range of the fourth color light is 525 nanometers to 585 nanometers.

31. The display substrate according to any one of claims 1 to 3, wherein: The orthographic projection shapes of the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area on the plane where the base substrate is located are any one of a triangle, a rectangle, a rhombus, a trapezoid, a pentagon, a hexagon or a circle.

32. The display substrate according to claim 31, wherein: The second light-emitting region has a second light-emitting area, the third light-emitting region has a third light-emitting area, the first light-emitting region, the second light-emitting region, the third light-emitting region and the fourth light-emitting region have the same orthographic projection shape on the plane where the substrate is located, and the first light-emitting area, the second light-emitting area, the third light-emitting area and the fourth light-emitting area are all different; or, the first light-emitting region, the second light-emitting region, the third light-emitting region and the fourth light-emitting region have different orthographic projection shapes on the plane where the substrate is located.

33. A display substrate, comprising a base substrate, a plurality of light-emitting units located on the same side of the base substrate, and a cutoff layer located on a side of the plurality of light-emitting units away from the base substrate; the plurality of light-emitting units include at least a first light-emitting unit emitting a first color light, a second light-emitting unit emitting a second color light, and a third light-emitting unit emitting a third color light; the first light-emitting unit has a first light-emitting area, the second light-emitting unit has a second light-emitting area, and the third light-emitting unit has a third light-emitting area; the first color is red; The orthographic projection of the cutoff layer on the plane where the base substrate is located at least partially overlaps with the orthographic projection of the first light-emitting area on the plane where the base substrate is located, and the cutoff layer is configured to prevent light with a wavelength above 630 nanometers from emitting from the display substrate.

34. The display substrate according to claim 33, wherein: The orthographic projection of the cut-off layer on the plane where the base substrate is located includes the orthographic projection of the first light-emitting region on the plane where the base substrate is located.

35. The display substrate according to claim 33, wherein: An orthographic projection of the cutoff layer on the plane where the base substrate is located at least partially overlaps with an orthographic projection of at least one of the second light-emitting region and the third light-emitting region on the plane where the base substrate is located.

36. The display substrate according to any one of claims 33 to 35, wherein: In a plane perpendicular to the base substrate, the display substrate further includes a light-emitting structure layer and a color filter structure layer sequentially located on the same side of the base substrate; the light-emitting structure layer includes at least a first light-emitting device of the first light-emitting unit, a second light-emitting device of the second light-emitting unit, and a third light-emitting device of the third light-emitting unit; the color filter structure layer includes at least a first color filter, a second color filter, and a third color filter; the cut-off layer is located on a side of the color filter structure layer away from the base substrate.

37. The display substrate according to any one of claims 33 to 35, wherein: In a plane perpendicular to the base substrate, the display substrate further comprises a light-emitting structure layer located on one side of the base substrate; the light-emitting structure layer comprises at least a first light-emitting device of the first light-emitting unit, a second light-emitting device of the second light-emitting unit, and a third light-emitting device of the third light-emitting unit; the cut-off layer is located on a side of the light-emitting structure layer away from the base substrate. 38 . The display substrate according to claim 37 , further comprising a light adjustment layer, wherein the light adjustment layer is located on a side of the cutoff layer away from the base substrate, and the light adjustment layer comprises at least a polarizer.

39. A display device comprising the display substrate according to any one of claims 1 to 38.

Images