Light-emitting chip, light-emitting substrate and display device

Abstract

The embodiment of the invention provides a light-emitting chip, a light-emitting substrate and a display device. The light-emitting chip comprises a light-emitting structure and a light-transmitting cover plate. The light-emitting structure comprises a first light-emitting element, a second light-emitting element and a third light-emitting element, and light emitted by the first light-emitting element, the second light-emitting element and the third light-emitting element is different in color; the light-emitting structure is divided into a first light-emitting part, a second light-emitting part and a third light-emitting part, the first light-emitting part comprises all first light-emitting elements, the second light-emitting part comprises all second light-emitting elements, and the third light-emitting part comprises all third light-emitting elements; the light-transmitting cover plate is located on the light-emitting side of the light-emitting structure. The surface of the side, away from the light-emitting structure, of the light-transmitting cover plate is provided with a symmetric center, and the orthographic projection of the first light-emitting part on the surface, the orthographic projection of the second light-emitting part on the surface and the orthographic projection of the third light-emitting part on the surface are in central symmetry about the symmetric center of the surface. The problem of color cast of the light-emitting chip can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a light-emitting chip, a light-emitting substrate and a display device. Background Art

[0002] With the development of light emitting diode technology, light emitting substrates using sub-millimeter (Mini) or even micron (Micro) light emitting diodes (Light Emitting Diode, LED for short) have been widely used.

[0003] In the related art, the light-emitting substrate includes a plurality of LED chips arranged at intervals, and the LED chips include LED chips of three different light-emitting colors (eg, red, green, and blue). However, the LED chips have the problem of color deviation under a large viewing angle. Summary of the invention

[0004] The embodiment of the present application provides a light-emitting chip, including:

[0005] A light-emitting structure, wherein the light-emitting structure comprises a first light-emitting element, a second light-emitting element and a third light-emitting element, wherein the first light-emitting element, the second light-emitting element and the third light-emitting element emit light of different colors; the light-emitting structure is divided into a first light-emitting portion, a second light-emitting portion and a third light-emitting portion, wherein the first light-emitting portion comprises all the first light-emitting elements, the second light-emitting portion comprises all the second light-emitting elements, and the third light-emitting portion comprises all the third light-emitting elements;

[0006] A light-transmitting cover is located on the light-emitting side of the light-emitting structure; a surface on one side of the light-transmitting cover away from the light-emitting structure has a center of symmetry, and the orthographic projection of the first light-emitting part on the surface, the orthographic projection of the second light-emitting part on the surface, and the orthographic projection of the third light-emitting part on the surface are respectively symmetrical about the center of symmetry of the surface.

[0007] In some embodiments, a symmetry center of an orthographic projection of one of the light-emitting elements of the light-emitting structure on the surface coincides with a symmetry center of the surface.

[0008] In some embodiments, a surface of one side of the light-transmitting cover away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line;

[0009] The first light-emitting portion includes three first light-emitting elements, which are arranged along the first diagonal line, and the symmetry center of the orthographic projection of one of the first light-emitting elements on the surface coincides with the symmetry center of the surface; the second light-emitting portion includes two second light-emitting elements, which are arranged on both sides of the symmetry center in a direction parallel to the first side; the third light-emitting portion includes two third light-emitting elements, which are distributed on opposite sides of the symmetry center in the direction of the second diagonal line; the orthographic projection of the third light-emitting element on the surface is a rectangle, and the long side of the rectangle is parallel to the first side.

[0010] In some embodiments, a surface of one side of the light-transmitting cover away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line;

[0011] The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface along the first diagonal line; the second light-emitting portion includes a second light-emitting element, and the symmetry center of the orthographic projection of the second light-emitting element on the surface coincides with the symmetry center of the surface; the third light-emitting portion includes two third light-emitting elements, and the two third light-emitting elements are distributed on opposite sides of the symmetry center in the direction of the second diagonal line; the orthographic projection of the third light-emitting element on the surface includes a first area and a second area connected to each other, the extension direction of the first area is parallel to the first side, and the extension direction of the second area is parallel to the second side.

[0012] In some embodiments, a surface of one side of the light-transmitting cover away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line;

[0013] The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface along the second diagonal line; the second light-emitting portion includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center in a direction parallel to the first side; the third light-emitting portion includes a third light-emitting element, and the symmetry center of the orthographic projection of the third light-emitting element on the surface coincides with the symmetry center of the surface; the orthographic projection of the third light-emitting element on the surface includes a first area, a second area and a third area connected in sequence, the extension direction of the first area and the extension direction of the third area are both parallel to the first side, the extension direction of the second area is parallel to the second side, and the orthographic projection of the first area on the surface and the orthographic projection of the third area on the surface are symmetrical about the symmetry center of the surface.

[0014] In some embodiments, a surface of one side of the light-transmitting cover away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line;

[0015] The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface in a direction parallel to the first side; the second light-emitting portion includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center in a direction parallel to the second side; the third light-emitting portion includes five third light-emitting elements, the symmetry center of the orthographic projection of one of the third light-emitting elements on the surface coincides with the symmetry center of the surface, the other two third light-emitting elements are arranged on both sides of the symmetry center of the surface along the first diagonal line, and the remaining two third light-emitting elements are arranged on both sides of the symmetry center of the surface along the second diagonal line.

[0016] In some embodiments, the light emitted by the first light emitting element is red light, the light emitted by the second light emitting element is blue light, and the light emitted by the third light emitting element is green light;

[0017] An area of ​​an orthographic projection of the third light emitting portion on the surface is larger than an area of ​​an orthographic projection of the second light emitting portion on the surface, and larger than an area of ​​an orthographic projection of the first light emitting portion on the surface.

[0018] In some embodiments, the light emitting chip comprises:

[0019] A light-emitting layer, comprising a plurality of light-emitting diodes arranged at intervals;

[0020] The color conversion layer is located on the light-emitting side of the light-emitting layer. The color conversion layer includes a limiting dam layer located on the light-emitting side of the light-emitting layer and a plurality of color conversion parts. The limiting dam layer has a plurality of opening areas. Each color conversion part is located in an opening area corresponding to it.

[0021] In some embodiments, the light emitting layer includes a plurality of light emitting diodes, the light emitting diodes including at least one first light emitting diode, at least one second light emitting diode, and at least one third light emitting diode;

[0022] The plurality of opening areas include at least one first opening area, at least one second opening area and at least one third opening area, the first opening area is arranged corresponding to the first light-emitting diode, the second opening area is arranged corresponding to the second light-emitting diode, and the third opening area is arranged corresponding to the third light-emitting diode;

[0023] The color conversion layer includes at least one first color conversion unit for converting light emitted by a first light emitting diode into a first light, at least one second color conversion unit for converting light emitted by a second light emitting diode into a second light, and at least one third color conversion unit for converting light emitted by a third light emitting diode into a third light or maintaining the light emitted by the third light emitting diode as a third light. The colors of the first light, the second light and the third light are different. The first light emitting unit includes all of the first light emitting diodes and all of the first color conversion units. The second light emitting unit includes all of the second light emitting diodes and all of the second color conversion units. The third light emitting unit includes all of the third light emitting diodes and all of the third color conversion units.

[0024] The present application also provides a light-emitting substrate, comprising:

[0025] An array substrate;

[0026] A plurality of the aforementioned light emitting chips are arranged at intervals on one side of the array substrate.

[0027] In some embodiments, the light emitting substrate further comprises:

[0028] A black film layer, at least a portion of which is located in a spacing area between light-transmitting cover plates adjacent to the light-emitting chips.

[0029] The present application also provides a light-emitting substrate, comprising:

[0030] An array substrate;

[0031] A plurality of light-emitting chips are arranged at intervals on one side of the array substrate;

[0032] The encapsulation adhesive layer, at least part of which is located in the spacing area of ​​the light-transmitting cover plate adjacent to the light-emitting chip, is made of a light-transmitting material, and the refractive index of the light-transmitting material is substantially the same as the refractive index of the light-transmitting cover plate.

[0033] In some embodiments, the light emitting substrate further includes a black film located on a side of the packaging glue layer away from the array substrate.

[0034] The present application also provides a display device, comprising the light-emitting substrate as described above.

[0035] The beneficial effects of this application include:

[0036] In the present embodiment, when the black film layer in the interval area between the transparent cover plates of adjacent light-emitting chips absorbs and blocks the light emitted at a large angle, causing a color shift problem, since the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion are all centrally symmetrically distributed, when the light emitted by the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion is emitted to the transparent cover plate, the intensity difference of the light of the same color on the opposite sides in multiple directions of the light-emitting surface of the transparent cover plate at a large viewing angle is reduced, thereby reducing the degree of change in the brightness ratio of the three colors of light at a large viewing angle with changes in the viewing angle, thereby improving the color shift problem of the display substrate, and improving the color shift problem caused by the irregular arrangement of the light-emitting portions.

[0037] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] Figure 1 Shown is a schematic cross-sectional structure diagram of a light-emitting substrate in the related art;

[0040] Figure 2 The figure shows a complex structure diagram of a light emitting chip in the related art;

[0041] Figure 3 The figure shows a curve diagram showing the difference between the color coordinates of white light of a light-emitting chip in the related art and the color coordinates at a normal viewing angle as a function of the viewing angle;

[0042] Figure 4 The figure shows a curve diagram of the change of the illumination intensity of the red light in the light emitted by the light emitting chip at different viewing angles in the related art;

[0043] Figure 5 The figure shows a curve diagram of the change of the illumination intensity of the green light in the light emitted by the light emitting chip at different viewing angles in the related art;

[0044] Figure 6 The figure shows a curve diagram of the intensity variation of blue light in the light emitted by the light emitting chip at different viewing angles in the related art;

[0045] Figure 7 FIG. 1 is a cross-sectional schematic diagram of light-emitting chips arranged at intervals on an array substrate provided by an exemplary embodiment of the present embodiment;

[0046] Figure 8 to Figure 12 Shown is a schematic diagram of a top view structure of several light-emitting chips provided by an exemplary embodiment of the present application;

[0047] Fig.13 FIG. 1 is a cross-sectional schematic diagram of a light-emitting chip provided by an exemplary embodiment of the present embodiment;

[0048] Fig.14 Shown is a schematic diagram of a top view structure of a light-emitting chip provided by an exemplary embodiment of the present application;

[0049] Fig.15 Shown is a schematic cross-sectional structure diagram of a light-emitting substrate provided by an exemplary embodiment of the present application;

[0050] Fig.16 Shown is a schematic cross-sectional structure diagram of a light-emitting substrate provided by an exemplary embodiment of the present application;

[0051] Fig.17 Shown is a schematic cross-sectional structure diagram of a light-emitting structure provided by an exemplary embodiment of the present application.

[0052] In the figure: 1-light-emitting chip; 10-light-emitting structure; 20-translucent cover plate; 201-surface; 11-first light-emitting part; 111-first light-emitting element; 12-second light-emitting part; 121-second light-emitting element; 13-third light-emitting part; 131-third light-emitting element; L1-first side; L2-second side; L3-third side; L4-fourth side; L5-first diagonal line; L6-second diagonal line; O-symmetry center; L7-symmetry axis; 2-array substrate; 3-black film layer; 4-encapsulation glue layer; 5-black film; 101-light-emitting layer; 1011-first electrode; 1012-first semiconductor layer; 101 3-multi-quantum well layer; 1014-second semiconductor layer; 1015-second electrode; 1016-passivation layer; 101a-first light-emitting diode; 101b-second light-emitting diode; 101c-third light-emitting diode; 102-color conversion layer; 1021-defining dam layer; 1022-color conversion part; 1022a-first color conversion part; 1022b-second color conversion part; 1022c-third color conversion part; 103-filter layer; 1031-shading part; 1032-filter part; 1032a-first filter part; 1032b-second filter part; 1032c-third filter part; 104-bonding layer. DETAILED DESCRIPTION

[0053] Hereinafter, the present application will be described more fully with reference to the accompanying drawings, in which embodiments are shown.

[0054] It should be noted that when an A element such as a layer, a film, or a region is referred to as being "on the side of the B element away from the C element", it means that the A element may be directly on the surface of the side of the B element away from the C element, or an intermediate layer, intermediate region, or intermediate element may exist between the B element and the A element. When an A element such as a layer, a film, or a region is referred to as being "between the B element and the C element", it means that only the A element exists between the B element and the C element, or an intermediate layer, intermediate region, or intermediate element may exist between the A element and the B element, or between the A element and the C element.

[0055] Although terms such as "first", "second", etc. can be used to describe various components, such components are not limited by the above terms. These terms are only used to distinguish one component from another component, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more. In the absence of conflict, the features in the following embodiments of the present application can complement or combine with each other.

[0056] In the accompanying drawings, the symbols "x", "y" and "z" are used to indicate directions, and the x, y and z directions are not limited to three mutually perpendicular directions of a rectangular coordinate system, and can be interpreted in a broader sense. For example, the x, y and z directions may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. Exemplarily, x is used to indicate a first direction, y is used to indicate a second direction perpendicular to the first direction, and z is used to indicate a third direction perpendicular to the first direction and the second direction. The first direction x, the second direction y and the third direction z may correspond to the horizontal direction, the vertical direction and the thickness direction of the display panel, respectively.

[0057] In the accompanying drawings, the size and thickness of the elements may be exaggerated for better understanding, clarity and ease of description. However, the present application is not limited to the size and thickness shown in the accompanying drawings. In the accompanying drawings, the thickness of layers, films, panels, regions and other elements may be exaggerated for clarity. Example embodiments are shown in the accompanying drawings, wherein the same reference numerals represent the same elements.

[0058] like Figure 1 and Figure 2As shown, the light-emitting chip 1 on the light-emitting substrate includes three light-emitting elements of different colors, namely a first light-emitting element 11', a second light-emitting element 12' and a third light-emitting element 13', and the arrangement of the three light-emitting elements of different colors is roughly in a triangle. The light-emitting chip 1 also includes a light-transmitting cover plate 20 located on the light-emitting side of each light-emitting element. The light-emitting substrate also includes a black film layer 3 located in the spacing area between adjacent light-emitting chips 1. Specifically, the black film layer 3 can partially transmit the emitted light. The material of the black film layer 3 can be a resin material doped with carbon black. Since the black film layer 3 absorbs and blocks the emitted wide-angle light, it causes the maximum emission angles of the light of the light-emitting element in different directions (for example, the maximum emission angles θ1 and θ2 of the light of the first light-emitting element 11' on the left and right sides are different). For example, Figure 3 The figure shows a curve of the difference between the color coordinates of the white light of the light emitting chip 1 in the related art and the color coordinates at a normal viewing angle as a function of the viewing angle. It can be seen that the color coordinates of the white light of the LED chip at different viewing angles vary greatly. Figure 4 The figure shows a curve diagram of the change of the illumination intensity of the red light in the light emitted by the light emitting chip 1 at different viewing angles in the related art. Figure 5 The figure shows a curve diagram of the change of the illumination intensity of the green light in the light emitted by the light emitting chip 1 at different viewing angles in the related art. Figure 6 The figure shows the intensity variation curve of the blue light in the light emitted by the light emitting chip 1 at different viewing angles. Figures 4 to 6 It can be seen that in the light emitting chip 1 of the related art, in the same direction (vertical direction or horizontal direction), the intensity of light of different colors varies greatly with the change of viewing angle, resulting in a large change in the brightness ratio of the three colors of light at a large viewing angle with the change of viewing angle. Therefore, the color deviation of the light emitting chip 1 in the related art is more serious. The vertical direction and the horizontal direction refer to two mutually perpendicular directions in the light emitting surface of the light-transmitting cover plate.

[0059] The present application provides a light-emitting chip, a light-emitting substrate and a display device, aiming to solve or improve the above technical problems.

[0060] The present application provides a light-emitting chip. Figure 7 FIG. 1 is a cross-sectional schematic diagram of the light-emitting chips provided in this embodiment arranged at intervals on the array substrate. Figure 7 As shown, the light emitting chip 1 includes a light emitting structure 10 and a light-transmissive cover plate 20 located on the light-emitting side of the light emitting structure 10 . Figure 8 to Figure 12 FIG. 1 is a schematic diagram of a top view of several light-emitting chips 1 provided by an exemplary embodiment of the present application. Figure 8 to Figure 12As shown in any of the figures, the light emitting structure 10 includes a first light emitting element 111, a second light emitting element and a third light emitting element 131, and the colors of the light emitted by the first light emitting element 111, the second light emitting element and the third light emitting element 131 are all different; the light emitting structure 10 is divided into a first light emitting portion 11, a second light emitting portion 12 and a third light emitting portion 13, the first light emitting portion 11 includes all the first light emitting elements 111, the second light emitting portion 12 includes all the second light emitting elements, and the third light emitting portion 13 includes all the third light emitting elements 131. A side surface 201 of the transparent cover plate 20 away from the light emitting structure 10 has a symmetry center O, and the orthographic projection of the first light emitting portion 11 on the surface 201, the orthographic projection of the second light emitting portion 12 on the surface 201 and the orthographic projection of the third light emitting portion 13 on the surface 201 are respectively symmetric about the symmetry center O of the surface 201.

[0061] In the present embodiment, when the black film layer 3 in the interval area between the transparent cover plates 20 of adjacent light-emitting chips 1 absorbs and blocks the light emitted at a large angle, causing a color shift problem, since the first light-emitting portion 11, the second light-emitting portion 12, and the third light-emitting portion 13 are all centrally symmetrically distributed, when the light emitted by the first light-emitting portion 11, the second light-emitting portion 12, and the third light-emitting portion 13 is emitted to the transparent cover plate 20, the intensity difference of the light of the same color on the opposite sides in multiple directions of the light-emitting surface of the transparent cover plate 20 at a large viewing angle is reduced, thereby reducing the degree of change of the brightness ratio of the three colors of light at a large viewing angle with the change of the viewing angle, thereby improving the color shift problem of the display substrate, and improving the color shift problem caused by the irregular arrangement of the light-emitting portions.

[0062] Specifically, the black film layer 3 can partially transmit the emitted light. The material of the black film layer 3 can be a resin material doped with carbon black.

[0063] Furthermore, the light emitting surface (ie, the corresponding surface 201) of the transparent cover plate 20 includes two mutually perpendicular directions, namely, the horizontal direction and the vertical direction. The large viewing angle color deviation problem in the horizontal direction and the vertical direction can be improved.

[0064] In some embodiments, the symmetry center O of the orthographic projection of a light emitting element of the light emitting structure 10 on the surface 201 coincides with the symmetry center O of the surface 201. This can avoid the space in the area where the symmetry center O is located from being idle, and the space in the area where the symmetry center O is located can be fully utilized, so that the first light emitting portion 11, the second light emitting portion 12, and the third light emitting portion 13 can be symmetrically distributed while fully utilizing the layout space of the light emitting chip 1.

[0065] In some embodiments, Figure 8As shown, a side surface 201 of the light-transmitting cover plate 20 away from the light-emitting structure 10 has a first side L1, a second side L2, a third side L3 and a fourth side L4 connected in sequence, the first side L1 is parallel to the third side L3, and the second side L2 is parallel to the fourth side L4; the intersection of the first side L1 and the second side L2 is the first intersection, the intersection of the second side L2 and the third side L3 is the second intersection, the intersection of the third side L3 and the fourth side L4 is the third intersection, the intersection of the fourth side L4 and the first side L1 is the fourth intersection, the line connecting the first intersection and the third intersection is the first diagonal L5, the line connecting the second intersection and the fourth intersection is the second diagonal L6, and the center of symmetry O is the intersection of the first diagonal L5 and the second diagonal L6.

[0066] The first light-emitting portion 11 includes three first light-emitting elements 111, which are arranged along the first diagonal line L5, and the symmetry center O of the orthographic projection of one of the first light-emitting elements 111 on the surface 201 coincides with the symmetry center O of the surface 201; the second light-emitting portion 12 includes two second light-emitting elements, which are arranged on both sides of the symmetry center O in a direction parallel to the first side L1; the third light-emitting portion 13 includes two third light-emitting elements 131, which are distributed on opposite sides of the symmetry center O in the direction of the second diagonal line L6; the orthographic projection of the third light-emitting element 131 on the surface 201 is a rectangle, and the long side of the rectangle is parallel to the first side L1.

[0067] In the present embodiment, the third light-emitting element 131 can be set to a rectangle so that the shapes of the light-emitting parts with different luminous colors are different, and the spatial distribution ratio of the third light-emitting part 13 on the surface 201 can be further made different from that of the first light-emitting part 11 and the second light-emitting part 12. According to the different luminous efficiencies of the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 emitting light of different colors, the colors corresponding to the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 can be adaptively planned so that the area divided by the light-emitting element with relatively low luminous efficiency accounts for a larger proportion.

[0068] In some embodiments, Fig. 9As shown, a side surface 201 of the light-transmitting cover plate 20 away from the light-emitting structure 10 has a first side L1, a second side L2, a third side L3 and a fourth side L4 connected in sequence, the first side L1 is parallel to the third side L3, and the second side L2 is parallel to the fourth side L4; the intersection of the first side L1 and the second side L2 is the first intersection, the intersection of the second side L2 and the third side L3 is the second intersection, the intersection of the third side L3 and the fourth side L4 is the third intersection, the intersection of the fourth side L4 and the first side L1 is the fourth intersection, the line connecting the first intersection and the third intersection is the first diagonal L5, the line connecting the second intersection and the fourth intersection is the second diagonal L6, and the center of symmetry O is the intersection of the first diagonal L5 and the second diagonal L6.

[0069] The first light-emitting portion 11 includes two first light-emitting elements 111, and the two first light-emitting elements 111 are distributed on opposite sides of the symmetry center O in the direction of the first diagonal line L5; the second light-emitting portion 12 includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center O in a direction parallel to the first side L1; the third light-emitting portion 13 includes three third light-emitting elements 131, and the symmetry center O of the orthographic projection of one third light-emitting element 131 on the surface 201 coincides with the symmetry center O of the surface 201, and the other two third light-emitting elements 131 are distributed on opposite sides of the symmetry center O in the direction of the second diagonal line L6 and the orthographic projections of the other two third light-emitting elements 131 on the surface 201 are rectangles, and the long sides of the rectangles are parallel to the first side L1.

[0070] Compared with the aforementioned embodiment, this embodiment can configure different first light-emitting elements 111, second light-emitting elements and third light-emitting elements 131 corresponding to different areas when the shape of the distribution area is constant, thereby improving the color deviation problem of the light-emitting chip 1 and making the arrangement more flexible.

[0071] In some embodiments, Fig.10 As shown, a side surface 201 of the light-transmitting cover plate 20 away from the light-emitting structure 10 has a first side L1, a second side L2, a third side L3 and a fourth side L4 connected in sequence, the first side L1 is parallel to the third side L3, and the second side L2 is parallel to the fourth side L4; the intersection of the first side L1 and the second side L2 is the first intersection, the intersection of the second side L2 and the third side L3 is the second intersection, the intersection of the third side L3 and the fourth side L4 is the third intersection, the intersection of the fourth side L4 and the first side L1 is the fourth intersection, the line connecting the first intersection and the third intersection is the first diagonal L5, the line connecting the second intersection and the fourth intersection is the second diagonal L6, and the center of symmetry O is the intersection of the first diagonal L5 and the second diagonal L6.

[0072] The first light-emitting portion 11 includes two first light-emitting elements 111, and the two light-emitting elements are arranged on both sides of the symmetry center O of the surface 201 along the first diagonal line L5; the second light-emitting portion 12 includes a second light-emitting element, and the symmetry center O of the orthographic projection of the second light-emitting element on the surface 201 coincides with the symmetry center O of the surface 201; the third light-emitting portion 13 includes two third light-emitting elements 131, and the two third light-emitting elements 131 are distributed on opposite sides of the symmetry center O in the direction of the second diagonal line L6; the orthographic projection of the third light-emitting element 131 on the surface 201 includes a first area 1311 and a second area 1312 connected to each other, the extension direction of the first area 1311 is parallel to the first side L1, and the extension direction of the second area 1312 is parallel to the second side L2.

[0073] In this embodiment, the area occupied by the orthographic projection of the third light-emitting portion 13 on the surface 201 can be further increased to adaptively design the luminous colors corresponding to the first light-emitting portion 11, the second light-emitting portion 12 and the third light-emitting portion 13, so that the area occupied by the light-emitting elements with relatively low luminous efficiency can be larger.

[0074] In some embodiments, Fig.11 As shown, a side surface 201 of the light-transmitting cover plate 20 away from the light-emitting structure 10 has a first side L1, a second side L2, a third side L3 and a fourth side L4 connected in sequence, the first side L1 is parallel to the third side L3, and the second side L2 is parallel to the fourth side L4; the intersection of the first side L1 and the second side L2 is the first intersection, the intersection of the second side L2 and the third side L3 is the second intersection, the intersection of the third side L3 and the fourth side L4 is the third intersection, the intersection of the fourth side L4 and the first side L1 is the fourth intersection, the line connecting the first intersection and the third intersection is the first diagonal L5, the line connecting the second intersection and the fourth intersection is the second diagonal L6, and the center of symmetry O is the intersection of the first diagonal L5 and the second diagonal L6.

[0075] The first light-emitting portion 11 includes two first light-emitting elements 111, and the two light-emitting elements are arranged on both sides of the symmetry center O of the surface 201 along the second diagonal line L6; the second light-emitting portion 12 includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center O in a direction parallel to the first side L1; the third light-emitting portion 13 includes a third light-emitting element 131, and the symmetry center O of the orthographic projection of the third light-emitting element 131 on the surface 201 coincides with the symmetry center O of the surface 201; the orthographic projection of the third light-emitting element 131 on the surface 201 includes a first area 1311, a second area 1312 and a third area 1313 connected in sequence, the extension direction of the first area 1311 and the extension direction of the third area 1313 are both parallel to the first side L1, the extension direction of the second area 1312 is parallel to the second side L2, and the orthographic projection of the first area 1311 on the surface 201 and the orthographic projection of the third area 1313 on the surface 201 are symmetric about the symmetry center O of the surface 201.

[0076] In the present embodiment, the first region 1311, the second region 1312 and the third region 1313 are connected in sequence. Compared with configuring the light-emitting areas in each separate area, the interval area between adjacent light-emitting elements can be set as the light-emitting area during the epitaxial growth process of the light-emitting chip 1, so as to further increase the light-emitting area ratio of the third light-emitting part 13, thereby improving the utilization efficiency of the light-emitting chip 1, that is, it can have a higher brightness under a smaller current condition, and can further improve the light-emitting efficiency of the light-emitting substrate.

[0077] In some embodiments, Fig.12 As shown, a side surface 201 of the light-transmitting cover plate 20 away from the light-emitting structure 10 has a first side L1, a second side L2, a third side L3 and a fourth side L4 connected in sequence, the first side L1 is parallel to the third side L3, and the second side L2 is parallel to the fourth side L4; the intersection of the first side L1 and the second side L2 is the first intersection, the intersection of the second side L2 and the third side L3 is the second intersection, the intersection of the third side L3 and the fourth side L4 is the third intersection, the intersection of the fourth side L4 and the first side L1 is the fourth intersection, the line connecting the first intersection and the third intersection is the first diagonal L5, the line connecting the second intersection and the fourth intersection is the second diagonal L6, and the center of symmetry O is the intersection of the first diagonal L5 and the second diagonal L6.

[0078] The first light-emitting portion 11 includes two first light-emitting elements 111, and the two light-emitting elements are arranged on both sides of the symmetry center O of the surface 201 in a direction parallel to the first side L1; the second light-emitting portion 12 includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center O in a direction parallel to the second side L2; the third light-emitting portion 13 includes five third light-emitting elements 131, and the symmetry center O of the orthographic projection of one third light-emitting element 131 on the surface 201 coincides with the symmetry center O of the surface 201, and the other two third light-emitting elements 131 are arranged on both sides of the symmetry center O of the surface 201 along the first diagonal line L5, and the remaining two third light-emitting elements 131 are arranged on both sides of the symmetry center O of the surface 201 along the second diagonal line L6.

[0079] In the present embodiment, by evenly arranging the third light-emitting elements 131 of the third light-emitting portion 13 at the symmetry center O of the surface 201 and at the four vertex directions corresponding to the two diagonals, it is possible to improve the luminous efficiency of the third light-emitting portion 13 by increasing the proportion of the arrangement area of ​​the third light-emitting elements 131 of the third light-emitting portion 13 on the surface 201 when there is a large difference in luminous efficiency between the third light-emitting portion 13 and the first light-emitting portion 11 and the second light-emitting portion 12 at the same luminous area.

[0080] In some embodiments, the light emitted by the first light-emitting element 111 is red light, the light emitted by the second light-emitting element is blue light, and the light emitted by the third light-emitting element 131 is green light; the area of ​​the orthographic projection of the third light-emitting portion 13 on the surface 201 is larger than the area of ​​the orthographic projection of the second light-emitting portion 12 on the surface 201, and is larger than the area of ​​the orthographic projection of the first light-emitting portion 11 on the surface 201.

[0081] Generally, the light emitting element with green light has the lowest light emitting efficiency. By increasing the area ratio of the third light emitting element 131 to increase the amount of green light emitted, it is helpful to improve the white balance effect of the light emitting chip.

[0082] Based on the same inventive concept, Fig.13 and Fig.14 As shown, Fig.13 is a cross-sectional view of the light emitting chip 1 provided in this embodiment, Fig.14The figure shows a schematic diagram of the top view of the light emitting chip 1 provided by the present application. The present application also provides a light emitting chip 1, which includes a light emitting substrate and a light-transmitting cover plate 20. The light-emitting structure 10 includes a first light-emitting element 111, a second light-emitting element and a third light-emitting element 131, and the colors of the light emitted by the first light-emitting element 111, the second light-emitting element and the third light-emitting element 131 are different; the light-emitting structure 10 is divided into a first light-emitting portion 11, a second light-emitting portion 12 and a third light-emitting portion 13, the first light-emitting portion 11 includes all the first light-emitting elements 111, the second light-emitting portion 12 includes all the second light-emitting elements, and the third light-emitting portion 13 includes all the third light-emitting elements 131; the transparent cover 20 is located on the light-emitting side of the light-emitting structure 10; a side surface 201 of the transparent cover 20 away from the light-emitting structure 10 has a symmetry axis L7, and the orthographic projection of the first light-emitting portion 11 on the surface 201, the orthographic projection of the second light-emitting portion 12 on the surface 201 and the orthographic projection of the third light-emitting portion 13 on the surface 201 are symmetrical about the symmetry axis L7 of the surface 201, respectively, and the first light-emitting portion 11, the second light-emitting portion 12 and the third light-emitting portion 13 are arranged sequentially along the extension direction of the symmetry axis L7.

[0083] In this embodiment, by setting the first light-emitting unit 11, the second light-emitting unit 12 and the third light-emitting unit 13 to be symmetrical about the symmetry axis L7 of the transparent cover plate 20, the color shift problem of the light-emitting chip 1 in the second direction y at a large viewing angle can be improved. For example, in the actual application scenario of a suspended display product, the color shift problem in the horizontal direction will affect the user's experience, so the color shift problem in the horizontal direction has a more significant impact on the user's viewing experience, while the color shift problem in the vertical direction does not affect the user's experience. Therefore, the second direction y can be a horizontal direction.

[0084] In one embodiment, the light emitting element may include a Micro LED and / or a Mini LED. The size (e.g., length) of the Micro LED is less than 50 microns, for example, 10 microns to 50 microns. The size (e.g., length) of the Mini LED is 50 microns to 150 microns, for example, 80 microns to 120 microns.

[0085] The present application also provides a light-emitting substrate, such as Fig.15 As shown, the light-emitting substrate also includes a packaging glue layer 4, which is arranged in the spacing area of ​​the transparent cover plate 20 of adjacent light-emitting chips 1. The packaging glue layer 4 is made of a transparent material, and the refractive index of the transparent material is substantially the same as that of the transparent cover plate 20.

[0086] In this embodiment, since the refractive index of the light-transmitting material is substantially the same as that of the light-transmitting cover plate 20, the light-transmitting cover plate 20 and the encapsulation adhesive layer 4 can be approximately an integrated structure, that is, a structure similar to a whole light-transmitting cover plate 20 can be formed, which can reduce the difference in the maximum emission angles of the light emitted by each light-emitting portion, help improve the color cast problem, and also improve the light transmittance.

[0087] In some embodiments, Fig.16 As shown, the light-emitting substrate further includes a black film 5 located on the side of the packaging glue layer 4 away from the array substrate 2. The black film 5 can blacken the surface and improve the ink color consistency of the light-emitting substrate. Specifically, the black film 5 can partially transmit the emitted light.

[0088] In some embodiments, the material of the black film 5 may include resin doped with carbon black.

[0089] In some embodiments, for ease of mounting, the material of the black film 5 further includes polyethylene terephthalate (PET). For example, a black dye (such as carbon black) can be added to PET. For example, the material of the black film 5 is a composite material, including a PET layer and an attachment layer, wherein the attachment layer is doped with a black dye (such as carbon black), and the attachment layer is used to attach the black film 5 to the side of the encapsulation glue layer 4 away from the array substrate 2, and the attachment layer can be a resin material.

[0090] In some embodiments, Fig.17As shown, the light-emitting structure 10 includes a light-emitting layer 101, a color conversion layer 102 and a filter layer 103 stacked on one side of the array substrate 2, the light-emitting layer 101 includes a plurality of light-emitting diodes arranged at intervals, and the light-emitting diodes include at least one first light-emitting diode 101a, at least one second light-emitting diode 101b and at least one third light-emitting diode 101c. The color conversion layer 102 includes a limiting dam layer 1021 and a plurality of color conversion parts 1022 arranged at intervals. The limiting dam layer 1021 is provided with a plurality of opening areas, each opening area is used to accommodate a corresponding color conversion part 1022, and the color conversion part 1022 includes a first color conversion part 1022a, a second color conversion part 1022b and a third color conversion part 1022c. The first color conversion part 1022a is used to convert the light emitted by the first light emitting diode 101a into a first light, the second color conversion part 1022b is used to convert the light emitted by the second light emitting diode 101b into a second light, and the third color conversion part 1022c is used to convert the light emitted by the third light emitting diode 101c into a third light or maintain the light emitted by the third light emitting diode 101c as a third light, and the colors of the first light, the second light and the third light are different. The filter layer 103 includes a light shielding portion 1031 and a plurality of filter portions 1032. The light shielding portion 1031 is provided with a plurality of second openings, and each second opening is used to accommodate at least a portion of a corresponding filter portion 1032. The orthographic projection of the light shielding portion 1031 on the array substrate 2 covers the orthographic projection of the limiting dam layer 1021 on the array substrate 2, and the orthographic projection of the filter portion 1032 on the array substrate 2 covers the orthographic projection of the color conversion portion 1022 on the array substrate 2. The filter portion 1032 includes a first filter portion 1032a, a second filter portion 1032b, and a third filter portion 1032c. The orthographic projection of the first filter portion 1032a on the array substrate 2 covers the orthographic projection of the first color conversion portion 1022a on the array substrate 2, the orthographic projection of the second filter portion 1032b on the array substrate 2 covers the orthographic projection of the second color conversion portion 1022b on the array substrate 2, and the orthographic projection of the third filter portion 1032c on the array substrate 2 covers the orthographic projection of the third color conversion portion 1022c on the array substrate 2. Among them, all the first light-emitting diodes 101a, the first color conversion portion 1022a, and the first filter layer 103 together constitute the first light-emitting portion 11, all the second light-emitting diodes 101b, the second color conversion portion 1022b, and the second filter layer 103 together constitute the second light-emitting portion 12, and all the second light-emitting diodes 101b, the second color conversion portion 1022b, and the second filter layer 103 together constitute the third light-emitting portion 13.

[0091] In some embodiments, the orthographic projection of the first filter part 1032a on the transparent cover plate 20, the orthographic projection of the second filter part 1032b on the transparent cover plate 20, and the orthographic projection of the third filter part 1032c on the transparent cover plate 20 are respectively symmetrical about the symmetry center O of the transparent cover plate 20. This can improve the color deviation problem of the light-emitting substrate at different viewing angles.

[0092] In some embodiments, the orthographic projection of the first filter part 1032a on the light-transmitting cover plate 20, the orthographic projection of the second filter part 1032b on the light-transmitting cover plate 20, and the orthographic projection of the third filter part 1032c on the light-transmitting cover plate 20 are all symmetrical about the symmetry axis L7 of the light-transmitting cover plate 20. This can improve the color deviation in a single direction, and can be applied to application scenarios where the color deviation in a single direction has a significant impact on the user experience.

[0093] In some embodiments, the light-emitting diode in the light-emitting layer 101 may be a monochromatic light-emitting device, specifically a blue LED or an ultraviolet LED. When the light-emitting diode is a blue LED, two of the color conversion parts 1022 in the first color conversion part 1022a, the second color conversion part 1022b, and the third color conversion part 1022c are respectively a red conversion part and a green conversion part, and the remaining color conversion part 1022 is a light transmission part. When the light-emitting diode is an ultraviolet LED, the first color conversion part 1022a, the second color conversion part 1022b, and the third color conversion part 1022c may be respectively a red conversion part, a green conversion part, and a blue conversion part.

[0094] In some embodiments, Fig.16 As shown, the first light emitting diode 101a includes a first electrode 1011, a first semiconductor layer 1012, a multi-quantum well layer 1013, a second semiconductor layer 1014 and a second electrode 1015. The second light emitting diode 101b and the third light emitting diode 101c are similar. The first light emitting diode 101a, the second light emitting diode 101b and the third light emitting diode 101c share the second semiconductor layer 1014.

[0095] In some embodiments, the material of the first electrode 1011 includes a transparent conductive oxide, a metal, or a stacked structure of the two. In some embodiments, the material of the second electrode 1015 includes a metal. In some embodiments, the material of the first semiconductor layer 1012 includes p-type GaN. In some embodiments, the material of the second semiconductor layer 1014 includes n-type GaN.

[0096] In some embodiments, the light emitting layer 101 further includes a passivation layer 1016 .

[0097] In some embodiments, a bonding layer 104 is further disposed between the light-emitting layer 101 and the color conversion layer 102 .

[0098] The present application also provides a light-emitting substrate, such as Fig.15 As shown, it includes a light emitting chip 1 and an array substrate 2 as provided in the above embodiment, and a plurality of light emitting chips 1 are arranged at intervals on one side of the array substrate 2. The array substrate 2 includes a driving circuit for driving the light emitting chip 1. In some embodiments, the driving circuit includes a thin film transistor.

[0099] The embodiment of the light-emitting substrate provided in the embodiment of the present application and the embodiment of the light-emitting chip 1 belong to the same inventive concept, and the description of the relevant details and beneficial effects can be referred to each other and will not be repeated here.

[0100] It should be noted that in this embodiment, the refractive index of the light-transmitting material and the refractive index of the light-transmitting cover plate 20 are "substantially the same" means that the difference between the refractive index of the light-transmitting material and the refractive index of the light-transmitting cover plate 20 is less than 10% of the larger value of the refractive index of the two. Preferably, the refractive index of the light-transmitting material and the refractive index of the light-transmitting cover plate 20 are exactly the same.

[0101] In some embodiments, the light-transmitting material may be acrylic resin, epoxy resin, benzoolefin, etc. In one example, the light-transmitting cover plate 20 is made of glass, and the refractive index of the light-transmitting material ranges from 1.5 to 1.9.

[0102] Based on the same inventive concept, the present application also provides a display device, including a light-emitting substrate and a housing as in the above-mentioned embodiment. The embodiment of the display device provided in the present application and the embodiment of the light-emitting substrate belong to the same inventive concept, and the description of the relevant details and beneficial effects can refer to each other and will not be repeated here.

[0103] In some embodiments, the light-emitting substrate is a display panel, and the light-emitting elements are sub-pixels of the display panel. In another embodiment, the display panel is a liquid crystal display panel, and the light-emitting substrate is a backlight module.

[0104] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for the purpose of limitation. The description of features or aspects within each embodiment should generally be considered as other similar features or aspects that can be used in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope defined by the claims and their equivalents.

Claims

1. A light-emitting chip, characterized in that: include: A light-emitting structure, wherein the light-emitting structure comprises a first light-emitting element, a second light-emitting element and a third light-emitting element, wherein the first light-emitting element, the second light-emitting element and the third light-emitting element emit light of different colors; the light-emitting structure is divided into a first light-emitting portion, a second light-emitting portion and a third light-emitting portion, wherein the first light-emitting portion comprises all the first light-emitting elements, the second light-emitting portion comprises all the second light-emitting elements, and the third light-emitting portion comprises all the third light-emitting elements; A light-transmitting cover plate, located on the light-emitting side of the light-emitting structure; A surface of the light-transmitting cover plate on one side away from the light-emitting structure has a center of symmetry, and the orthographic projection of the first light-emitting part on the surface, the orthographic projection of the second light-emitting part on the surface and the orthographic projection of the third light-emitting part on the surface are respectively symmetrical about the center of symmetry of the surface.

2. The light-emitting chip according to claim 1, characterized in that: A symmetry center of an orthographic projection of one of the light-emitting elements of the light-emitting structure on the surface coincides with a symmetry center of the surface.

3. The light-emitting chip according to claim 2, characterized in that: A surface of the light-transmitting cover plate on one side away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line; The first light-emitting portion includes three first light-emitting elements, which are arranged along the first diagonal line, and the symmetry center of the orthographic projection of one of the first light-emitting elements on the surface coincides with the symmetry center of the surface; the second light-emitting portion includes two second light-emitting elements, which are arranged on both sides of the symmetry center in a direction parallel to the first side; the third light-emitting portion includes two third light-emitting elements, which are distributed on opposite sides of the symmetry center in the direction of the second diagonal line; the orthographic projection of the third light-emitting element on the surface is a rectangle, and the long side of the rectangle is parallel to the first side.

4. The light-emitting chip according to claim 2, characterized in that: A surface of the light-transmitting cover plate on one side away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line; The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface along the first diagonal line; the second light-emitting portion includes a second light-emitting element, and the symmetry center of the orthographic projection of the second light-emitting element on the surface coincides with the symmetry center of the surface; the third light-emitting portion includes two third light-emitting elements, and the two third light-emitting elements are distributed on opposite sides of the symmetry center in the direction of the second diagonal line; the orthographic projection of the third light-emitting element on the surface includes a first area and a second area connected to each other, the extension direction of the first area is parallel to the first side, and the extension direction of the second area is parallel to the second side.

5. The light-emitting chip according to claim 2, characterized in that: A surface of the light-transmitting cover plate on one side away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line; The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface along the second diagonal line; the second light-emitting portion includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center in a direction parallel to the first side; the third light-emitting portion includes a third light-emitting element, and the symmetry center of the orthographic projection of the third light-emitting element on the surface coincides with the symmetry center of the surface; The orthographic projection of the third light-emitting element on the surface includes a first area, a second area and a third area connected in sequence, an extension direction of the first area and an extension direction of the third area are both parallel to the first side, an extension direction of the second area is parallel to the second side, and the orthographic projection of the first area on the surface and the orthographic projection of the third area on the surface are centrally symmetric about the symmetry center of the surface.

6. The light emitting chip according to claim 2, characterized in that: A surface of the light-transmitting cover plate on one side away from the light-emitting structure has a first side, a second side, a third side and a fourth side connected in sequence, the first side is parallel to the third side, and the second side is parallel to the fourth side; the intersection of the first side and the second side is a first intersection, the intersection of the second side and the third side is a second intersection, the intersection of the third side and the fourth side is a third intersection, the intersection of the fourth side and the first side is a fourth intersection, the line connecting the first intersection and the third intersection is a first diagonal line, the line connecting the second intersection and the fourth intersection is a second diagonal line, and the symmetry center is the intersection of the first diagonal line and the second diagonal line; The first light-emitting portion includes two first light-emitting elements, and the two light-emitting elements are arranged on both sides of the symmetry center of the surface in a direction parallel to the first side; the second light-emitting portion includes two second light-emitting elements, and the two second light-emitting elements are arranged on both sides of the symmetry center in a direction parallel to the second side; the third light-emitting portion includes five third light-emitting elements, the symmetry center of the orthographic projection of one of the third light-emitting elements on the surface coincides with the symmetry center of the surface, the other two third light-emitting elements are arranged on both sides of the symmetry center of the surface along the first diagonal line, and the remaining two third light-emitting elements are arranged on both sides of the symmetry center of the surface along the second diagonal line.

7. The light-emitting chip according to any one of claims 1 to 6, characterized in that: The light emitted by the first light emitting element is red light, the light emitted by the second light emitting element is blue light, and the light emitted by the third light emitting element is green light; An area of ​​an orthographic projection of the third light emitting portion on the surface is larger than an area of ​​an orthographic projection of the second light emitting portion on the surface, and larger than an area of ​​an orthographic projection of the first light emitting portion on the surface.

8. The light emitting chip according to claim 1, characterized in that: The light emitting chip comprises: A light-emitting layer, comprising a plurality of light-emitting diodes arranged at intervals; The color conversion layer is located on the light-emitting side of the light-emitting layer. The color conversion layer includes a limiting dam layer located on the light-emitting side of the light-emitting layer and a plurality of color conversion parts. The limiting dam layer has a plurality of opening areas. Each color conversion part is located in an opening area corresponding to it.

9. The light emitting chip according to claim 8, characterized in that: The light emitting layer includes a plurality of light emitting diodes, wherein the light emitting diodes include at least one first light emitting diode, at least one second light emitting diode and at least one third light emitting diode; The plurality of opening areas include at least one first opening area, at least one second opening area and at least one third opening area, the first opening area is arranged corresponding to the first light-emitting diode, the second opening area is arranged corresponding to the second light-emitting diode, and the third opening area is arranged corresponding to the third light-emitting diode; The color conversion layer includes at least one first color conversion unit for converting light emitted by a first light emitting diode into a first light, at least one second color conversion unit for converting light emitted by a second light emitting diode into a second light, and at least one third color conversion unit for converting light emitted by a third light emitting diode into a third light or maintaining the light emitted by the third light emitting diode as a third light. The colors of the first light, the second light and the third light are different. The first light emitting unit includes all of the first light emitting diodes and all of the first color conversion units. The second light emitting unit includes all of the second light emitting diodes and all of the second color conversion units. The third light emitting unit includes all of the third light emitting diodes and all of the third color conversion units.

10. A light-emitting substrate, characterized in that: include: An array substrate; A plurality of light-emitting chips as described in any one of claims 1 to 9 are arranged at intervals on one side of the array substrate.

11. The light emitting substrate according to claim 10, characterized in that: The light-emitting substrate further comprises: A black film layer, at least a portion of which is located in a spacing area between light-transmitting cover plates adjacent to the light-emitting chips.

12. A light-emitting substrate, characterized in that: include: An array substrate; A plurality of light-emitting chips are arranged at intervals on one side of the array substrate; The encapsulation adhesive layer, at least part of which is located in the spacing area of ​​the light-transmitting cover plate adjacent to the light-emitting chip, is made of a light-transmitting material, and the refractive index of the light-transmitting material is substantially the same as the refractive index of the light-transmitting cover plate.

13. The light emitting substrate according to claim 12, characterized in that: The light emitting substrate further comprises a black film located on a side of the packaging glue layer away from the array substrate.

14. A display device, characterized in that: It comprises the light-emitting substrate as described in any one of claims 10 to 13.

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