Display panel and display device

Abstract

Embodiments of the present invention disclose a display panel and a display device. The display panel includes: an array substrate; a plurality of light-emitting elements located on one side of the array substrate and electrically connected to the array substrate; and a color conversion layer located on a side of the light-emitting elements away from the array substrate. The light-emitting elements include first light-emitting surfaces, and the plane on which the first light-emitting surface of at least one light-emitting element lies is not parallel to the plane on which the color conversion layer lies. The display panel provided by the embodiments of the present invention can increase the excitation thickness of the color conversion layer along the light-emitting direction of the first light-emitting surface, increase the optical path of light emitted from the first light-emitting surface in the color conversion layer, improve the conversion efficiency of the light-emitting elements, reduce light leakage, and thereby enhance the color purity and color gamut of the display panel, thereby improving its display quality.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the continuous development of display technology, display panels have been widely used in people's production and daily life. However, existing display panels still have some technical problems that need to be solved. For example, the thickness of the color conversion layer is insufficient, resulting in low conversion efficiency of the light-emitting element, which affects the display effect of the display panel. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the problem in existing display panels that low conversion efficiency of light-emitting elements affects display effects.

[0004] An embodiment of the present invention provides a display panel, comprising:

[0005] an array substrate;

[0006] A plurality of light emitting elements are located on one side of the array substrate and are electrically connected to the array substrate;

[0007] A color conversion layer is located on a side of the light-emitting element away from the array substrate;

[0008] The light-emitting element includes a first light-emitting surface, and a plane where the first light-emitting surface of at least one light-emitting element is located is not parallel to a plane where the color conversion layer is located.

[0009] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes the display panel provided by any embodiment of the present invention.

[0010] The display panel provided by an embodiment of the present invention is configured such that the plane on which the first light-emitting surface of at least one light-emitting element is located is not parallel to the plane on which the color conversion layer is located, so that the first light-emitting surface is inclined relative to the color conversion layer in a direction perpendicular to the plane on which the display panel is located. This can increase the excitation thickness of the color conversion layer along the light-emitting direction of the first light-emitting surface, increase the optical path of the light emitted from the first light-emitting surface in the color conversion layer, improve the conversion efficiency of the light-emitting element, reduce light leakage, and thereby improve the color purity and color gamut of the display panel, thereby improving its display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, although the drawings described below are some specific embodiments of the present invention, for those skilled in the art, the basic concepts of the device structure, driving method and manufacturing method disclosed and suggested by the various embodiments of the present invention can be expanded and extended to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the present invention.

[0012] Figure 1 is a schematic top view of a display panel provided by an embodiment of the present invention;

[0013] Figure 2 yes Figure 1 A schematic cross-sectional view along section line AA';

[0014] Figure 3 is a schematic top view of another display panel provided by an embodiment of the present invention;

[0015] Figure 4 yes Figure 3 A schematic cross-sectional view along section line BB';

[0016] Figure 5 yes Figure 1 Another cross-sectional schematic diagram along the section line AA';

[0017] Figure 6 yes Figure 1 Another cross-sectional schematic diagram along the section line AA';

[0018] Figure 7 yes Figure 3 Another cross-sectional schematic diagram along the section line BB';

[0019] Figure 8 yes Figure 3 Another cross-sectional schematic diagram along the section line BB';

[0020] Figure 9 is a schematic top view of another display panel provided by an embodiment of the present invention;

[0021] Figure 10 yes Figure 9 A schematic cross-sectional view along section line CC';

[0022] Figure 11 is a schematic top view of another display panel provided by an embodiment of the present invention;

[0023] Figure 12 yes Figure 11 A schematic cross-sectional view along section line DD';

[0024] Figure 13 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0025] Figure 14 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0026] Figure 15 yes Figure 14 An enlarged schematic diagram of the light-emitting element;

[0027] Figure 16 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0028] Figure 17 yes Figure 11 A schematic cross-sectional view along section line DD';

[0029] Figure 18 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0030] Figure 19 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0031] Figure 20 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0032] Figure 21 yes Figure 11 A schematic cross-sectional view along section line DD';

[0033] Figure 22 yes Figure 1 Another cross-sectional schematic diagram along the section line AA';

[0034] Figure 23 is a schematic top view of a display panel provided by an embodiment of the present invention;

[0035] Figure 24 yes Figure 23 A schematic cross-sectional view along section line EE';

[0036] Figure 25 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0037] Figure 26 yes Figure 11 Another cross-sectional schematic diagram along the section line DD';

[0038] Figure 27 yes Figure 11Another cross-sectional schematic diagram along the section line DD';

[0039] Figure 28 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will refer to the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention through implementation methods. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the basic concepts disclosed and suggested by the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

[0041] In view of the technical problems mentioned in the background technology, an embodiment of the present invention provides a display panel, which includes: an array substrate; a plurality of light-emitting elements located on one side of the array substrate and electrically connected to the array substrate; a color conversion layer located on a side of the light-emitting elements away from the array substrate; wherein the light-emitting elements include a first light-emitting surface close to a side of the color conversion layer, and the plane where the first light-emitting surface of at least one light-emitting element is located is not parallel to the plane where the color conversion layer is located.

[0042] The display panel provided by an embodiment of the present invention is configured such that the plane on which the first light-emitting surface of at least one light-emitting element is located is not parallel to the plane on which the color conversion layer is located, so that the first light-emitting surface is inclined relative to the color conversion layer in a direction perpendicular to the plane on which the display panel is located. This can increase the excitation thickness of the color conversion layer along the light-emitting direction of the first light-emitting surface, increase the optical path of the light emitted from the first light-emitting surface in the color conversion layer, improve the conversion efficiency of the light-emitting element, reduce light leakage, and thereby improve the color purity and color gamut of the display panel, thereby improving its display effect.

[0043] The above is the core idea of ​​the present invention. The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

[0044] For example, Figure 1 is a schematic top view of a display panel provided by an embodiment of the present invention, Figure 2 yes Figure 1 A cross-sectional diagram along the section line AA', refer to Figure 1 and Figure 2The display panel 10 provided by an embodiment of the present invention includes: an array substrate 100; a plurality of light-emitting elements 200, which are located on one side of the array substrate 100 and electrically connected to the array substrate 100; and a color conversion layer 300, which is located on a side of the light-emitting element 200 away from the array substrate 100; wherein the light-emitting element 200 includes a first light-emitting surface 21, and the plane where the first light-emitting surface 21 of at least one light-emitting element 200 is located is not parallel to the plane where the color conversion layer 300 is located.

[0045] Specifically, the display panel 10 provided in an embodiment of the present invention includes an array substrate 100, a light-emitting element 200, and a color conversion layer 300. The array substrate 100 is electrically connected to the light-emitting element 200, providing a driving signal to the light-emitting element 200, thereby driving the light-emitting element 200 to emit light. The light-emitting element 200 can be a monochromatic light-emitting element, such as a blue light-emitting element. The color conversion layer 300 is located on the side of the light-emitting element 200 away from the array substrate 100. When light emitted by the light-emitting element 200 passes through the color conversion layer 300, its wavelength is changed and converted into light of another color. For example, after the blue light-emitting element excites the color conversion layer 300, it is converted into red or green light. The light-emitting element 200 includes a first light-emitting surface 21. Optionally, the majority of light emitted by the light-emitting element 200 is emitted from the first light-emitting surface 21. For example, the first light-emitting surface 21 can be a surface of the light-emitting layer in the light-emitting element 200, particularly the surface of the light-emitting layer on the side of the light-emitting layer closest to the color conversion layer 300.

[0046] Since the proportion of light rays close to the center of the first light emitting surface 21 among the light rays emitted from the first light emitting surface 21 is greater than the proportion of light rays far from the center of the first light emitting surface 21, for example, among the light rays emitted from the first light emitting surface 21, with the center of the first light emitting surface 21 as the center of the sphere, the proportion of light rays with an emission angle within a range of 100° on the side of the first light emitting surface 21 close to the color conversion layer 300 and with an emission angle greater than the proportion of light rays with other emission angles around it, therefore, as long as it is ensured that the light rays close to the center of the first light emitting surface 21 among the light rays emitted from the first light emitting surface 21 have a higher conversion efficiency after passing through the color conversion layer 300, the overall conversion efficiency of the light emitting element 200 can be improved. To this end, in an embodiment of the present invention, the plane where the first light emitting surface 21 of the light emitting element 200 is located is not parallel to the plane where the color conversion layer 300 is located, so that the first light emitting surface 21 is inclined relative to the color conversion layer 300 along a direction perpendicular to the plane where the display panel 10 is located. Compared with the prior art method in which the plane where the first light emitting surface 21 of the light emitting element 200 is parallel to the plane where the color conversion layer 300 is located, this embodiment can increase the excitation thickness of the color conversion layer 300 along the light emitting direction of the first light emitting surface 21, increase the optical path of the outgoing light from the first light emitting surface 21 in the color conversion layer 300, improve the conversion efficiency of the light emitting element 200, reduce light leakage, and thereby improve the color purity and color gamut of the display panel 10, improve problems such as the bluish color when the display panel 10 displays green images, and improve its display effect.

[0047] It is understandable that the first light emitting surface 21 can also be the top surface of the light emitting element 200, that is, the surface of the light emitting element 200 close to the color conversion layer 300, so as to maximize the conversion of light emitted from the first light emitting surface 21 through the color conversion layer 300 and then emit it, thereby improving the conversion efficiency.

[0048] It should be noted that the present invention does not limit the material of the color conversion layer 300. Those skilled in the art may configure the material based on actual circumstances. For example, the color conversion layer 300 may include materials such as quantum dots or phosphors. Furthermore, the plane on which the first light-emitting surface 21 of the light-emitting element 200 lies is not parallel to or perpendicular to the plane on which the color conversion layer 300 lies. This ensures that the color conversion layer 300 is located in the light-emitting direction of the first light-emitting surface 21, ensuring that light is emitted from the light-emitting surface of the display panel 10.

[0049] Since the color conversion layer 300 has a low conversion efficiency and has different effects on the display of different color images on the display panel 10, those skilled in the art can set the type and number of light-emitting elements 200 tilted relative to the color conversion layer 300 according to actual needs. For example, if the display panel 10 has a larger color deviation when displaying a green image compared to other color images, only the first light-emitting surface 21 of the light-emitting element 200 corresponding to the color conversion layer 300 displaying green can be tilted to increase the excitation thickness corresponding to the color conversion layer 300 displaying green and improve the problem of the green image being bluish. The number of light-emitting elements 200 corresponding to the color conversion layer 300 displaying green needs to be designed according to actual conditions. Furthermore, the embodiments of the present invention do not limit the tilt direction of the light-emitting elements 200. The tilt directions of the light-emitting elements 200 can be the same or different, and can be designed according to actual conditions.

[0050] The display panel provided by an embodiment of the present invention is configured such that the plane on which the first light-emitting surface of at least one light-emitting element is located is not parallel to the plane on which the color conversion layer is located, so that the first light-emitting surface is inclined relative to the color conversion layer in a direction perpendicular to the plane on which the display panel is located. This can increase the excitation thickness of the color conversion layer along the light-emitting direction of the first light-emitting surface, increase the optical path of the light emitted from the first light-emitting surface in the color conversion layer, improve the conversion efficiency of the light-emitting element, reduce light leakage, and thereby improve the color purity and color gamut of the display panel, thereby improving its display effect.

[0051] refer to Figure 2 On the basis of the above embodiment, optionally, the light emitting element 200 includes a light emitting layer 220 , and the plane where the light emitting layer 220 is located is parallel to the plane where the first light emitting surface 21 is located.

[0052] The plane of the light-emitting layer 220 is parallel to the plane of the first light-emitting surface 21 of the light-emitting element 200, that is, perpendicular to the plane of the display panel 10. The light-emitting layer 220 is tilted as a whole, and is tilted relative to the color conversion layer 300. The light-emitting layer 220 is the light-emitting region of the light-emitting element 200. The overall tilt of the light-emitting layer 220 achieves a tilted first light-emitting surface 21 of the light-emitting element 200. The tilt of the light-emitting layer 220 relative to the color conversion layer 300 increases the excitation thickness of the color conversion layer 300 along the light-emitting direction of the first light-emitting surface 21, thereby increasing the optical path of light emitted from the first light-emitting surface 21 in the color conversion layer 300 and improving the conversion efficiency of the light-emitting element 200. This, in turn, enhances the color purity and color gamut of the display panel 10, improving its display quality. Furthermore, compared to tilting only one surface of the light-emitting layer 220, the overall tilt of the light-emitting layer 220 is more practical and simplifies the process.

[0053] Figure 3is a schematic top view of another display panel provided by an embodiment of the present invention, Figure 4 yes Figure 3 A cross-sectional diagram along the section line BB', refer to Figures 1 to 4 Optionally, a plurality of protruding structures 400 are provided on the surface of the array substrate 100 on the side close to the light-emitting element 200; the protruding structure 400 includes a top surface 410 on the side away from the array substrate 100, and the plane where the top surface 410 is located is not parallel to the plane where the color conversion layer 300 is located, and the light-emitting element 200 is arranged on the side of the top surface 410 facing the color conversion layer 300.

[0054] A plurality of protrusion structures 400 are provided on a surface of the array substrate 100 close to the light emitting element 200 . The protrusion structures 400 can tilt the first light emitting surface 21 of the light emitting element 200 relative to the color conversion layer 300 .

[0055] Specifically, the plane where the top surface 410 of the raised structure 400 is located is neither parallel to nor perpendicular to the plane where the color conversion layer 300 is located, so that the top surface 410 of the raised structure 400 is inclined relative to the color conversion layer 300 along a direction perpendicular to the plane where the display panel 10 is located. The light-emitting element 200 is arranged on the inclined top surface 410 and toward the side of the color conversion layer 300, so that the first light-emitting surface 21 of the light-emitting element 200 can be inclined relative to the color conversion layer 300, thereby increasing the excitation thickness of the color conversion layer 300 along the light-emitting direction of the first light-emitting surface 21, thereby improving the conversion efficiency of the light-emitting element 200.

[0056] In addition, compared to the light-emitting elements 200 in the prior art in which the plane where the light-emitting elements 200 are located is parallel to the plane where the color conversion layer 300 is located, the light-emitting elements 200 in this embodiment are arranged obliquely on the top surface 410, and the area of ​​the vertical projection on the array substrate 100 is smaller. Therefore, when the light-emitting elements 200 are arranged on the inclined top surface 410, the area of ​​the array substrate 100 occupied by the light-emitting elements 200 is smaller, and more light-emitting elements 200 can be arranged, which is conducive to improving the pixel density. Alternatively, when the areas of the vertical projections of the light-emitting elements 200 on the array substrate 100 are the same, when the light-emitting elements 200 are arranged on the inclined top surface 410, light-emitting elements 200 with a larger area can be used to further improve the luminous efficiency and conversion efficiency. It should be noted that the protruding structure 400 can be set independently of the array substrate 100, that is, multiple protruding structures 400 are additionally provided on the surface of one side of the array substrate 100 close to the light-emitting element 200. The additional protruding structure 400 does not require changing the original structure of the array substrate 100 and the light-emitting element 200, which can simplify the process and reduce costs.

[0057] Figure 5 yes Figure 1 Another cross-sectional diagram along the section line AA', refer to Figure 2 and Figure 5 Based on the above embodiment, optionally, the raised structure 400 further includes a bottom surface 420 close to the side of the array substrate 100, and the plane where the bottom surface 420 is located is parallel to the plane where the color conversion layer 300 is located; in the same raised structure 400, the vertical projection of the top surface 410 on the array substrate 100 covers the vertical projection of the bottom surface 420 on the array substrate 100.

[0058] When the protrusion structure 400 is provided independently of the array substrate 100, the bottom surface 420 of the protrusion structure 400 is in contact with the surface of the array substrate 100 close to the light emitting element 200. Figure 2 and Figure 5 For the same protrusion structure 400, the vertical projection of its top surface 410 on the array substrate 100 can cover the vertical projection of its bottom surface 420 on the array substrate 100, that is, the area of ​​the top surface 410 is larger than the area of ​​the bottom surface 420. In this way, the area of ​​the array substrate 100 occupied by the protrusion structure 400 can be reduced, more protrusion structures 400 can be arranged, and the number of light-emitting elements 200 can be increased, thereby improving the pixel density.

[0059] It should be noted that this embodiment only takes the vertical projection of the top surface 410 on the array substrate 100 covering the vertical projection of the bottom surface 420 on the array substrate 100 in the same protrusion structure 400 as an example to illustrate the shape and structure of the protrusion structure 400, but is not limiting. In other embodiments, those skilled in the art can design according to actual needs. For example, reference is made to FIG. Figure 4 In the same protrusion structure 400 , the vertical projection of the bottom surface 420 on the array substrate 100 may cover the vertical projection of the top surface 410 on the array substrate 100 .

[0060] Figure 6 yes Figure 1 Another cross-sectional diagram along the section line AA', refer to Figure 5 and Figure 6 Optionally, along a direction perpendicular to the plane where the display panel 10 is located, the cross-section of the protruding structure 400 is a right triangle or a right trapezoid; when the cross-section of the protruding structure 400 is a right triangle, the right-angled side of the right triangle is located on the side close to the array substrate 100, and the hypotenuse 401 of the right triangle is located on the side away from the array substrate 100; when the cross-section of the protruding structure 400 is a right trapezoid, the right trapezoid includes an upper base 404 and a lower base 405 that are relatively arranged in a direction parallel to the plane where the display panel 10 is located, and a right waist 406 and a hypotenuse waist 407 connecting the upper base 404 and the lower base 405, and the hypotenuse waist 407 is located on the side of the right waist 406 away from the array substrate 100.

[0061] For example, refer to Figure 5, along the direction perpendicular to the plane where the display panel 10 is located, the cross-section of the protruding structure 400 can be a right triangle, and the right triangle includes a hypotenuse 401, a first right-angled side 402 and a second right-angled side 403. The plane where the first right-angled side 402 is located, that is, the bottom surface 420 of the protruding structure 400 is bonded to the surface of the array substrate 100 close to the light-emitting element 200, the hypotenuse 401 is located on the side away from the array substrate 100, and the light-emitting element 200 is arranged on the plane where the hypotenuse 401 is located, that is, the top surface 410 of the protruding structure 400.

[0062] refer to Figure 6 , along a direction perpendicular to the plane where the display panel 10 is located, the cross-section of the protruding structure 400 can be a right-angled trapezoid, and the plane where the right-angled waist 406 of the right-angled trapezoid is located, that is, the bottom surface 420 of the protruding structure 400 is bonded to the surface of the array substrate 100 close to the light-emitting element 200, and the hypotenuse waist 407 is located on the side away from the array substrate 100. The light-emitting element 200 is arranged on the plane where the hypotenuse waist 407 is located, that is, the top surface 410 of the protruding structure 400.

[0063] In addition, when the cross section of the protrusion structure 400 is a right-angled trapezoid, other configurations are possible. For example, Figure 7 yes Figure 3 Another cross-sectional diagram along the section line BB', refer to Figure 7 When the cross-section of the protruding structure 400 is a right-angled trapezoid along a direction perpendicular to the plane where the display panel 10 is located, the right-angled trapezoid includes an upper base 404 and a lower base 405 that are oppositely arranged in a direction perpendicular to the plane where the display panel 10 is located, and a right-angled waist 406 and a hypotenuse waist 407 connecting the upper base 404 and the lower base 405. The lower base 405 is located on the side of the upper base 404 close to the array substrate 100.

[0064] Specifically, along the direction perpendicular to the plane where the display panel 10 is located, the cross-section of the raised structure 400 can be a right-angled trapezoid, and the plane where the lower base 405 of the right-angled trapezoid is located, that is, the bottom surface 420 of the raised structure 400 is bonded to the surface of the array substrate 100 close to the light-emitting element 200, and the hypotenuse 407 is located on the side away from the array substrate 100, and the light-emitting element 200 is arranged on the plane where the hypotenuse 407 is located, that is, the top surface 410 of the raised structure 400.

[0065] It should be noted that the above only takes the cross section of the protrusion structure 400 as a right triangle or a right trapezoid as an example, which is not limiting. In other embodiments, the cross section of the protrusion structure 400 may also be any other shape with a hypotenuse.

[0066] Figure 8 yes Figure 3 Another cross-sectional schematic diagram along the section line BB' is shown in FIG. Figure 8As shown, optionally, the array substrate 100 includes: a first film layer 110 , which is located on a side of the array substrate 100 close to the light emitting element 200 ; and the protrusion structure 400 is provided in the same layer as the first film layer 110 .

[0067] In this embodiment, the surface of the array substrate 100 close to the light emitting element 200, i.e., the contact surface with the light emitting element 400, can be made to have multiple inclined surfaces, i.e., top surfaces 410, which are inclined relative to the color conversion layer 300, so as to form multiple protrusion structures 400 with inclined top surfaces 410. Specifically, as Figure 8 As shown, along a direction perpendicular to the plane of the display panel 10, the array substrate 100 includes a stacked array of film layers, including a base substrate 101, a gate insulating layer 102, an active layer 103, an interlayer insulating layer 104, and a planarization layer 105, as well as metal layers such as a gate G, a source electrode S, and a drain electrode D. The first film layer 110 may include the planarization layer 105, meaning that the protruding structure 400 and the planarization layer 105 are fabricated in the same layer using the same process. Only the surface of the planarization layer 105, which is closest to the light-emitting element 200, is fabricated to have multiple top surfaces 410 that are inclined relative to the color conversion layer 300. This eliminates the need to modify the structures of other film layers in the array substrate 100, resulting in a relatively simple process.

[0068] It should be noted that the above description is based on the example that the first film layer 110 only includes the planarization layer 105, and is not intended to be limiting. In other embodiments, the first film layer 110 may also include an interlayer insulating layer 104, a gate insulating layer 102, a base substrate 101 and other film layers. It is sufficient to ensure that the surface of the array substrate 100 formed in the final form close to the side of the light-emitting element 200 has multiple top surfaces 410 inclined relative to the color conversion layer 300 to form multiple protruding structures 400 with inclined top surfaces 410.

[0069] Figure 9 is a top view schematic diagram of another display panel provided by an embodiment of the present invention, Figure 10 yes Figure 9 A cross-sectional diagram along the section line CC', refer to Figure 9 and Figure 10 Optionally, the top surface 410 of the same raised structure 400 includes a first top surface 411 and a second top surface 412 that are not coplanar, and the light-emitting element 200 includes a first light-emitting element 201 and a second light-emitting element 202; the plane where the first top surface 411 is located is not parallel to the plane where the color conversion layer 300 is located, and the first light-emitting element 201 is arranged on the side of the first top surface 411 facing the color conversion layer 300; and the plane where the second top surface 412 is located is not parallel to the plane where the color conversion layer 300 is located, and the second light-emitting element 202 is arranged on the side of the second top surface 412 facing the color conversion layer 300.

[0070] For example, refer to Figure 9 and Figure 10 Each raised structure 400 includes two top surfaces 410, namely a first top surface 411 and a second top surface 412. The planes on which the first top surface 411 and the second top surface 412 are located are not parallel to or perpendicular to the plane on which the color conversion layer 300 is located, and the plane on which the first top surface 411 is located is not parallel to the plane on which the second top surface 412 is located, so that the first top surface 411 and the second top surface 412 are both inclined relative to the color conversion layer 300, and a raised structure 400 includes two top surfaces 410 with opposite inclination directions. The first light-emitting element 201 and the second light-emitting element 202 are disposed on the first top surface 411 and the second top surface 412, respectively. This allows two light-emitting elements 200 with opposite inclinations to be disposed on a single raised structure 400, thereby evenly distributing light output in different directions. This fully utilizes the raised structure 400, reduces the number of raised structures 400, and simplifies the process. Furthermore, compared to the prior art where the plane of the light-emitting element 200 is parallel to the plane of the color conversion layer 300, the light-emitting element 200 disposed obliquely on the top surface 410 in this embodiment has a smaller vertical projection area on the array substrate 100, and the area of ​​the array substrate 100 occupied by the light-emitting element 200 is smaller, allowing for the installation of more light-emitting elements 200, thereby improving pixel density. Furthermore, the color conversion layer 300 at various locations within the opening of the retaining wall 600 is fully utilized. Furthermore, the raised structure 400 may further include a reflective material, which itself serves as a retaining wall between the first light-emitting element 201 and the second light-emitting element 202 located on the same raised structure 400 to prevent optical crosstalk.

[0071] It should be noted that the embodiment of the present invention does not limit the structure and number of the protrusion structure 400. For example, Figure 4 and Figure 5 The raised structure 400 may be a triangular prism structure, comprising an upper base and a lower base disposed opposite each other, and three side surfaces connecting the upper and lower bases. The planes on which the upper and lower bases lie are perpendicular to the plane on which the display panel 10 lies, and the upper and lower bases are both triangular. The three side surfaces are all rectangular and serve as the top surface 410, the bottom surface 420, and the sidewalls connecting the top surface 410 and the bottom surface 420 of the raised structure 400, respectively. The plane on which the side surface serving as the bottom surface 420 of the raised structure 400 lies is parallel to the plane on which the display panel 10 lies, that is, along a direction perpendicular to the plane on which the display panel 10 lies. The raised structure 400 is a flat triangular prism structure. In other embodiments, the raised structure 400 may also be any other structure having an inclined top surface 410.

[0072] Figure 11 A schematic top view of another display panel provided by an embodiment of the present invention is shown. Figure 12 yes Figure 11 A cross-sectional diagram along the section line DD', refer to Figure 11 and Figure 12 Optionally, the display panel 10 further includes: a connecting electrode 500; the connecting electrode 500 includes a first connecting electrode 510 and a second connecting electrode 520, and the light-emitting element 200 is electrically connected to the array substrate 100 through the first connecting electrode 510 and the second connecting electrode 520; along the direction perpendicular to the plane of the array substrate 100, the heights of the first connecting electrode 510 and the second connecting electrode 520 are different.

[0073] Exemplarily, the light-emitting element 200 includes a first electrode 210, a light-emitting layer 220 and a second electrode 230. The first electrode 210 of the light-emitting element 200 is electrically connected to the first connecting electrode 510, and the second electrode 230 of the light-emitting element 200 is electrically connected to the second connecting electrode 520, thereby realizing the electrical connection between the light-emitting element 200 and the array substrate 100. The array substrate 100 transmits different driving signals to the light-emitting element 200 through the first connecting electrode 510 and the second connecting electrode 520, respectively, to drive the light-emitting element 200 to emit light. By arranging the first connection electrode 510 and the second connection electrode 520 to have different heights along a direction perpendicular to the plane of the array substrate 100, the first light emitting surface 21 of the light emitting element 200 can be tilted relative to the color conversion layer 300 along a direction perpendicular to the plane of the display panel 10, thereby increasing the excitation thickness of the color conversion layer 300 along the light emitting direction of the first light emitting surface 21, improving the conversion efficiency of the light emitting element 200, and enhancing the display effect of the display panel 10; in addition, such an arrangement does not require changing the original structure and process of the array substrate 100 and the light emitting element 200, and the method is simple and efficient.

[0074] Figure 13 yes Figure 11 Another cross-sectional diagram along the section line DD' is shown in FIG. Figure 13 As shown, optionally, the light-emitting element 200 includes: a first electrode 210, a second electrode 230 and a light-emitting layer 220; the first electrode 210 and the second electrode 230 are both located on the side of the light-emitting layer 220 facing the array substrate 100, and the heights of the first electrode 210 and the second electrode 230 are different along the direction perpendicular to the plane where the array substrate 100 is located.

[0075] In this embodiment, the light-emitting element 200 has a same-side electrode structure, meaning that the first electrode 210 and the second electrode 230 are both located on the side of the light-emitting layer 220 facing the array substrate 100. This arrangement facilitates connection between the light-emitting element 200 and the array substrate 100 while also providing sufficient space for the color conversion layer 300. By arranging the first electrode 210 and the second electrode 230 at different heights perpendicular to the plane of the array substrate 100, the first light-emitting surface 21 of the light-emitting element 200 can be tilted relative to the color conversion layer 300 perpendicular to the plane of the display panel 10. This increases the excitation thickness of the color conversion layer 300 along the light-emitting direction of the first light-emitting surface 21, improving the conversion efficiency of the light-emitting element 200 without changing the film structure of the array substrate 100, thereby simplifying the process.

[0076] Figure 14 yes Figure 11 Another cross-sectional schematic diagram along the section line DD', Figure 15 yes Figure 14 The enlarged schematic diagram of the light-emitting element in Figure 14 and Figure 15 Optionally, the light-emitting element 200 includes a first electrode 210, a second electrode 230 and a light-emitting layer 220; along a direction perpendicular to the plane where the display panel 10 is located, the light-emitting layer 220 includes a first semiconductor layer 221, a composite layer 222 and a second semiconductor layer 223 arranged in a stacked manner; the first electrode 210 is located on a side of the first semiconductor layer 221 away from the composite layer 222, and is electrically connected to the first semiconductor layer 221; the second semiconductor layer 223 includes a first region 1 and a second region 2, the first region 1 corresponds to the light-emitting region of the light-emitting layer 220, and the second electrode 230 is located on a side of the second region 2 close to the composite layer 222, and is electrically connected to the second semiconductor layer 223.

[0077] Specifically, the first electrode 210 and the second electrode 230 are fabricated as follows: the first semiconductor layer 221 and the composite layer 222 are etched to expose a portion of the second semiconductor layer 223, i.e., the second region 2; the second electrode 230 is fabricated on the surface of the second region 2 of the second semiconductor layer 223 on the side close to the composite layer 222; and the first electrode 210 is fabricated on the side of the first semiconductor layer 221 away from the composite layer 222, ultimately forming the light-emitting element 200 with a same-side electrode structure. The materials of the first semiconductor layer 221, the composite layer 222, and the second semiconductor layer 223 are not limited; those skilled in the art can select the appropriate material based on the desired color of the light-emitting element 200.

[0078] Because the first electrode 210 and the second electrode 230 are located in different film layers and have different vertical spacings from the array substrate 100, the first light-emitting surface 21 of the light-emitting element 200 is naturally tilted relative to the color conversion layer 300 when the light-emitting element 200 is aligned and bonded to the array substrate 100. This embodiment utilizes the structural characteristics of the existing light-emitting element 200 to achieve tilting, without requiring additional structures or changes to the original film structure of the array substrate 100, resulting in a relatively simple process.

[0079] Figure 16 yes Figure 11 Another cross-sectional schematic diagram along the section line DD' is shown in FIG. Figure 16 As shown, optionally, the color conversion layer 300 includes a first surface 31 and a second surface 32 arranged opposite to each other in the light emitting direction of the display panel 10 ; the first surface 31 and / or the second surface 32 are not parallel to the plane where the display panel 10 is located.

[0080] In this embodiment, the first surface 31 and / or the second surface 32 of the color conversion layer 300 are not parallel to the plane where the display panel 10 is located. It can be understood that the first surface 31 and / or the second surface 32 of the color conversion layer 300 are inclined relative to the plane where the display panel 10 is located in a direction perpendicular to the plane where the display panel 10 is located. For example, the specific arrangement of the first surface 31 and the second surface 32 of the color conversion layer 300 can be referred to. Figure 16 , along a direction perpendicular to the plane where the display panel 10 is located, the first surface 31 of the color conversion layer 300 can be inclined relative to the plane where the display panel 10 is located, and the second surface 32 is parallel to the plane where the display panel 10 is located, or, both the first surface 31 and the second surface 32 of the color conversion layer 300 are inclined relative to the plane where the display panel 10 is located, and the planes where the first surface 31 and the second surface 32 are located are not parallel, or, the second surface 32 of the color conversion layer 300 can be inclined relative to the plane where the display panel 10 is located, and the first surface 31 is parallel to the plane where the display panel 10 is located.

[0081] It should be noted that the specific inclination direction of the first surface 31 and / or the second surface 32 of the color conversion layer 300 needs to be coordinated with the inclination direction of the light-emitting element 200, so that on the basis of the inclination of the light-emitting element 200 relative to the plane where the display panel 10 is located, the excitation thickness of the color conversion layer 300 is further increased along the light-emitting direction of the first light-emitting surface 21 of the light-emitting element 200, and the optical path of the light emitted from the first light-emitting surface 21 in the color conversion layer 300 is increased, thereby improving the conversion efficiency of the light-emitting element 200.

[0082] It is understood that for the sake of convenience of explanation, Figure 16Three different configurations of the first surface 31 and the second surface 32 of the color conversion layer 300 are shown in the same display panel 10. To simplify the process, one or two of the configurations can be selected in the same display panel 10. Figure 16 The inclination degree of the first surface 31 and the second surface 32 is only an example and not a limitation. Any setting method that can increase the excitation thickness of the color conversion layer 300 along the light emitting direction of the first light emitting surface 21 is within the protection scope of the embodiment of the present invention.

[0083] Figure 17 yes Figure 11 A cross-sectional diagram along the section line DD' is shown in FIG. Figure 17 As shown, optionally, the display panel 10 further includes: a plurality of retaining walls 600, the retaining walls 600 being located on a side of the array substrate 100 close to the light-emitting element 200 and between adjacent light-emitting elements 200; the retaining walls 600 including: a first retaining wall 610 and a second retaining wall 620, the first retaining wall 610 and the second retaining wall 620 being located on both sides of the light-emitting element 200 respectively; the first retaining wall 610 including a first side wall 61 close to the side of the light-emitting element 200, and the second retaining wall 620 including a second side wall 62 close to the side of the light-emitting element 200; along a direction perpendicular to the plane where the display panel 10 is located, the light-emitting element 200 is inclined toward the first retaining wall 610, at least a portion of the first side wall 61 is inclined toward a side away from the light-emitting element 200, and at least a portion of the second side wall 62 is inclined toward a side close to the light-emitting element 200.

[0084] Disposing a retaining wall 600 between adjacent light-emitting elements 200 prevents light from one light-emitting element 200 from being transmitted laterally to adjacent light-emitting elements 200, thereby preventing optical crosstalk. In this embodiment, the plane of the light-emitting layer 220 is tilted relative to the plane of the color conversion layer 300, perpendicular to the plane of the display panel 10. Due to the overall tilt of the light-emitting layer 220, the space occupied by it is increased. This allows for a more compact overall structure while preserving sufficient space for the light-emitting elements 200. This allows for a more rational design of the retaining wall 600 disposed adjacent to the light-emitting element 200.

[0085] Specifically, for ease of explanation, the retaining wall 600 is divided into a first retaining wall 610 and a second retaining wall 620. Taking a light-emitting element 200 as a reference, the first retaining wall 610 and the second retaining wall 620 are located on either side of the light-emitting element 200. The first retaining wall 610 includes a first sidewall 61 proximal to the light-emitting element 200, and the second retaining wall 620 includes a second sidewall 62 proximal to the light-emitting element 200. When the light-emitting element 200 tilts toward the first retaining wall 610 in a direction perpendicular to the plane of the display panel 10, at least a portion of the first sidewall 61 tilts away from the light-emitting element 200, while at least a portion of the second sidewall 62 tilts toward the light-emitting element 200. This ensures sufficient space for the light-emitting element 200 and a more compact overall structure.

[0086] Figure 18 yes Figure 11 Another cross-sectional diagram along the section line CC' is shown in FIG. Figure 18 As shown, optionally, along a direction perpendicular to the plane where the display panel 10 is located, the first retaining wall 610 is inclined toward a direction away from the light emitting element 200 , and the second retaining wall 620 is inclined toward a direction close to the light emitting element 200 .

[0087] In this embodiment, the first retaining wall 610 and the second retaining wall 620 are integrally tilted. Specifically, when the light-emitting element 200 tilts toward the first retaining wall 610 in a direction perpendicular to the plane of the display panel 10, the first retaining wall 610 tilts away from the light-emitting element 200, while the second retaining wall 620 tilts toward the light-emitting element 200. This ensures sufficient space for the light-emitting element 200 and makes the overall structure more compact. Furthermore, the overall tilting of the retaining wall 600 is highly maneuverable and relatively simple.

[0088] Figure 19 yes Figure 11 Another cross-sectional schematic diagram along the section line DD' is shown in FIG. Figure 19As shown, optionally, the first retaining wall 610 includes a first retaining wall section 611 and a first retaining wall section 612 connected to each other, and the first retaining wall section 612 is located between the first retaining wall section 611 and the array substrate 100; the second retaining wall 620 includes a second retaining wall section 621 and a second retaining wall section 622 connected to each other, and the second retaining wall section 622 is located between the second retaining wall section 621 and the array substrate 100; the first side wall 61 includes a first side wall 601 and a first side wall 602, and the first retaining wall section 611 includes a second retaining wall section 621 and a second retaining wall section 622 connected to each other, and the second retaining wall section 622 is located between the second retaining wall section 621 and the array substrate 100; A first A side wall 601, a first B retaining wall section 612 includes a first B side wall 602; a second side wall 62 includes a second A side wall 603 and a second B side wall 604, a second A retaining wall section 621 includes the second A side wall 603, and a second B retaining wall section 622 includes the second B side wall 604; along a direction perpendicular to the plane where the display panel 10 is located, the light-emitting element 200 is inclined toward the first retaining wall 610, the first B side wall 602 is inclined toward the side away from the light-emitting element 200, and the second B side wall 604 is inclined toward the side close to the light-emitting element 200.

[0089] In this embodiment, retaining wall 600 has a double-layer structure. Specifically, first retaining wall 610 comprises a first retaining wall section A 611 and a first retaining wall section B 612, which are interconnected. Second retaining wall 620 comprises a second retaining wall section A 621 and a second retaining wall section B 622, which are interconnected. Compared to a single-layer retaining wall, a double-layer retaining wall 600 is taller, allowing for ample space for the color conversion layer 300, facilitating its installation.

[0090] refer to Figure 19 The sidewalls of the retaining wall 600 may be partially tilted and partially non-tilted. Specifically, in the first retaining wall 610, the first retaining wall section 611 includes a first sidewall 601 close to the light-emitting element 200, and the first sidewall 602 close to the light-emitting element 200. When the light-emitting element 200 tilts toward the first retaining wall 610 in a direction perpendicular to the plane where the display panel 10 is located, the first sidewall 601 does not tilt, and the first sidewall 602 tilts toward the side away from the light-emitting element 200. In the second retaining wall 620, the second sidewall section 621 includes a second sidewall 603 close to the light-emitting element 200, and the second sidewall section 622 includes a second sidewall 604 close to the light-emitting element 200. When the light-emitting element 200 tilts toward the first retaining wall 610 in a direction perpendicular to the plane where the display panel 10 is located, the second sidewall 603 does not tilt, and the second sidewall 604 tilts toward the side close to the light-emitting element 200.

[0091] By setting up a double-layer structure of the retaining wall 600, the side walls (first B side wall 602 and second B side wall 604) of the retaining wall 600 (first B retaining wall 612 and second B retaining wall 622) located on the side close to the array substrate 100 are inclined, and the side walls (first A side wall 601 and second A side wall 603) of the retaining wall 600 (first A retaining wall 611 and second A retaining wall 621) located on the side away from the array substrate 100 are not inclined, so that sufficient accommodating space can be reserved for the light-emitting element 200, the overall structure is more compact, and there is no need to change the shape and structure of the color conversion layer 300, and the process flow is relatively simple.

[0092] Figure 20 yes Figure 11 Another cross-sectional schematic diagram along the section line DD' is shown in FIG. Figure 20 As shown, optionally, along a direction perpendicular to the plane where the display panel 10 is located, the first B-blocking wall 612 is inclined toward a direction away from the light emitting element 200 , and the second B-blocking wall 622 is inclined toward a direction close to the light emitting element 200 .

[0093] In the double-layer structure of the retaining wall 600, the retaining wall 600 located on the side close to the array substrate 100 (the first B retaining wall 612 and the second B retaining wall 622) can be tilted as a whole, and the retaining wall 600 located on the side away from the array substrate 100 (the first A retaining wall 611 and the second A retaining wall 621) is not tilted as a whole, so as to reserve sufficient accommodation space for the light-emitting element 200. The overall structure is more compact. At the same time, there is no need to change the shape and structure of the color conversion layer 300 and the retaining wall 600, and the process flow is relatively simple.

[0094] Figure 21 yes Figure 11 A cross-sectional diagram along the section line DD' is shown in FIG. Figure 21 As shown, optionally, the light-emitting element 200 includes a third light-emitting element 203 and a fourth light-emitting element 204 arranged adjacent to each other, and the inclination directions of the third light-emitting element 203 and the fourth light-emitting element 204 are opposite; the display panel 10 also includes a plurality of retaining walls 600, which are located on a side of the array substrate 100 close to the light-emitting element 200 and between adjacent light-emitting elements 200; the retaining wall 600 includes an intermediate retaining wall 650 located between the third light-emitting element 203 and the fourth light-emitting element 204; the intermediate retaining wall 650 includes a third side wall 63 close to the third light-emitting element 203 and a fourth side wall 64 close to the fourth light-emitting element 204; along a direction perpendicular to the plane of the display panel 10: at least a portion of the third side wall 63 has the same inclination direction as the third light-emitting element 203, at least a portion of the fourth side wall 64 has the same inclination direction as the fourth light-emitting element 204, and the width of the intermediate retaining wall 650 is gradually changed.

[0095] The light emitting element 200 includes a third light emitting element 203 and a fourth light emitting element 204. The third light emitting element 203 and the fourth light emitting element 204 are arranged adjacent to each other and have opposite tilt directions. For example, Figure 21 As shown, along the direction perpendicular to the plane where the display panel 10 is located, in the first light emitting surfaces 21 of the adjacent third light emitting elements 203 and the fourth light emitting elements 204, the vertical spacing between the ends close to the middle retaining wall 650 and the array substrate 100 is smaller than the vertical spacing between the ends away from the middle retaining wall 650 and the array substrate 100, that is, in the A1 area, the adjacent third light emitting elements 203 and the fourth light emitting elements 204 are both inclined toward the direction close to the middle retaining wall 650; or, in the first light emitting surfaces 21 of the adjacent third light emitting elements 203 and the fourth light emitting elements 204, the vertical spacing between the ends close to the middle retaining wall 650 and the array substrate 100 is larger than the vertical spacing between the ends away from the middle retaining wall 650 and the array substrate 100, that is, in the A2 area, the adjacent third light emitting elements 203 and the fourth light emitting elements 204 are both inclined toward the direction away from the middle retaining wall 650, that is, Figure 21 As shown, when the third light-emitting element 203 tilts to the right, the fourth light-emitting element 204 tilts to the left. Setting the adjacent third light-emitting elements 203 and fourth light-emitting elements 204 in opposite directions can even out the direction of light emission, thereby evenly emitting light in different directions, improving the display effect of the display panel 10. It can also improve the structural stability and enhance the reliability of the display panel 10.

[0096] Furthermore, the intermediate retaining wall 650 is arranged between the third light emitting element 203 and the fourth light emitting element 204 to avoid optical crosstalk. On this basis, according to the tilt direction of the light emitting element 200, the structure of the intermediate retaining wall 650 can be reasonably designed to reserve sufficient space for the light emitting element 200 while making the overall structure more compact. Specifically, the intermediate retaining wall 650 includes a third side wall 63 close to the third light emitting element 203 and a fourth side wall 64 close to the fourth light emitting element 204. For the convenience of explanation, the third side wall 63 and the third side wall 64 are tilted as a whole as an example. Figure 21 , along the direction perpendicular to the plane of the display panel 10, the third side walls 63 of the intermediate retaining wall 650 located on both sides of the third light-emitting element 203 are inclined to the right, that is, the inclination direction of the third side wall 63 is the same as the inclination direction of the third light-emitting element 203; the fourth side walls 64 of the intermediate retaining wall 650 located on both sides of the fourth light-emitting element 204 are inclined to the left, that is, the inclination direction of the fourth side wall 64 is the same as the inclination direction of the fourth light-emitting element 204.

[0097] In order to make the third side wall 63 and the fourth side wall 64 of the intermediate retaining wall 650 have the above-mentioned inclination, it can be achieved by setting the width of the intermediate retaining wall 650. Specifically, the width of the intermediate retaining wall 650 can be set to gradually change along the direction perpendicular to the plane where the display panel 10 is located. For example, referring to Figure 21 The cross-section of the intermediate retaining wall 650 can be trapezoidal along a direction perpendicular to the plane of the display panel 10. The intermediate retaining wall 650 with a gradually varying width is simple to manufacture and structurally stable. It is understood that the width direction of the intermediate retaining wall 650 described in this embodiment is parallel to the plane of the display panel 10.

[0098] It should be noted that Figure 21 The inclination directions of the third light-emitting element 203, the fourth light-emitting element 204, the third side wall 63 and the fourth side wall 64 and the structure of the intermediate retaining wall 650 are only examples. Those skilled in the art can design the structure of the intermediate retaining wall 650 according to the inclination direction of the light-emitting element 200, and the embodiments of the present invention are not limited to this.

[0099] Figure 22 yes Figure 1 Another cross-sectional schematic diagram along the section line AA' is shown in FIG. Figure 22 As shown, based on the above embodiment, optionally, the intermediate retaining wall 650 includes an intermediate retaining wall A 651 and an intermediate retaining wall B 652 that are connected to each other, and the intermediate retaining wall B 652 is located between the intermediate retaining wall A 651 and the array substrate 100; the intermediate retaining wall B 652 includes a third B side wall 65 close to the third light-emitting element 203 and a fourth B side wall 66 close to the fourth light-emitting element 204; along the direction perpendicular to the plane where the display panel 10 is located: the third B side wall 65 is in the same inclination direction as the third light-emitting element 203, the fourth B side wall 66 is in the same inclination direction as the fourth light-emitting element 204, and the width of the intermediate retaining wall B 652 is gradually changed.

[0100] In this embodiment, the intermediate retaining wall 650 has a double-layer structure, that is, the intermediate retaining wall 650 includes an intermediate retaining wall A 651 and an intermediate retaining wall B 652. According to the tilt direction of the light-emitting element 200, only the intermediate retaining wall B 652 on the side of the intermediate retaining wall 650 close to the array substrate 100 is set to make the overall structure compact. Specifically, along the direction perpendicular to the plane of the display panel 10, the third B side walls 65 of the B intermediate retaining wall 652 located on both sides of the third light-emitting element 203 are all tilted to the right, that is, the tilt direction of the third B side wall 65 is the same as the tilt direction of the third light-emitting element 203; the fourth B side walls 66 of the B intermediate retaining wall 652 located on both sides of the fourth light-emitting element 204 are all tilted to the left, that is, the tilt direction of the fourth B side wall 66 is the same as the tilt direction of the fourth light-emitting element 204, and the side walls of the A intermediate retaining wall 651 do not need to be changed according to the tilt direction of the light-emitting element 200. In this way, sufficient space is reserved for the light-emitting element 200, and there is no need to change the shape and structure of the color conversion layer 300 above the light-emitting element 200. The overall structure is compact and the process is simple.

[0101] In order to make the third B side wall 65 and the fourth B side wall 66 of the B intermediate retaining wall 652 have the above-mentioned inclination, it can be achieved by setting the width of the B intermediate retaining wall 652. Specifically, the width of the B intermediate retaining wall 652 can be set to gradually change along the direction perpendicular to the plane where the display panel 10 is located. For example, referring to Figure 22 , along the direction perpendicular to the plane where the display panel 10 is located, the cross section of the B intermediate retaining wall 652 can be a trapezoid. In addition, in order to increase the structural stability, the width of the A intermediate retaining wall 651 can be gradually changed along the direction perpendicular to the plane where the display panel 10 is located. For details, please refer to Figure 22 It is understandable that the width directions of the intermediate retaining wall A 651 and the intermediate retaining wall B 652 in this embodiment are both parallel to the plane where the display panel 10 is located.

[0102] Figure 23 is a schematic top view of a display panel provided by an embodiment of the present invention, Figure 24 yes Figure 23 A cross-sectional diagram along the section line EE', refer to Figure 23 and Figure 24 Optionally, the display panel 10 further includes: a plurality of retaining walls 600 , the retaining walls 600 being located on a side of the array substrate 100 close to the light-emitting element 200 and between adjacent light-emitting elements 200 ; the retaining walls 600 being arranged on a side of the top surface 410 facing the color conversion layer 300 .

[0103] A plurality of raised structures 400 are provided on a surface of one side of the array substrate 100 close to the light-emitting element 200. The plane on which the top surface 410 of the raised structure 400 lies is neither parallel to nor perpendicular to the plane on which the color conversion layer 300 lies, so that the top surface 410 of the raised structure 400 is tilted relative to the color conversion layer 300 in a direction perpendicular to the plane on which the display panel 10 lies. The light-emitting element 200 is disposed on the tilted top surface 410 and toward one side of the color conversion layer 300, so that the first light-emitting surface 21 of the light-emitting element 200 is tilted relative to the color conversion layer 300, thereby increasing the excitation thickness of the color conversion layer 300 along the light-emitting direction of the first light-emitting surface 21, and improving the conversion efficiency of the light-emitting element 200. On this basis, the retaining wall 600 can also be set on the side of the top surface 410 of the protruding structure 400 facing the color conversion layer 300, so that the retaining wall 600 is inclined relative to the color conversion layer 300, and the retaining wall 600 located on the top surface 410 of the same protruding structure 400 has the same inclination direction as the light-emitting element 200, which reserves sufficient accommodation space for the inclined light-emitting element 200 while making the overall structure more compact.

[0104] Figure 25 yes Figure 11 Another cross-sectional diagram along the section line DD', refer to Figure 25 Optionally, the display panel 10 further includes: a plurality of retaining walls 600, the retaining walls 600 being located on a side of the array substrate 100 close to the light emitting element 200 and being located between adjacent light emitting elements 200; the retaining walls 600 including: a third retaining wall 630 and a fourth retaining wall 640, the third retaining wall 630 and the fourth retaining wall 640 being located on both sides of the light emitting element 200 respectively; the third retaining wall 630 including a third retaining wall section A 631 and a third retaining wall section B 632 connected to each other, the third retaining wall section B 632 being located between the third retaining wall section A 631 and the array substrate 100; the fourth retaining wall 640 includes a fourth A retaining wall section 641 and a fourth B retaining wall section 642 that are interconnected, and the fourth B retaining wall section 642 is located between the fourth A retaining wall section 641 and the array substrate 100; along a direction perpendicular to the plane where the display panel 10 is located, the light-emitting element 200 is inclined toward the third retaining wall 630, the third A retaining wall section 631 is located on a side of the third B retaining wall section 632 close to the light-emitting element 200, and the fourth A retaining wall section 641 is located on a side of the fourth B retaining wall section 642 away from the light-emitting element 200.

[0105] In this embodiment, the retaining wall 600 has a double-layer structure. According to the tilt direction of the light-emitting element 200, the retaining wall 600 located on the side close to the array substrate 100 can be moved relative to the retaining wall 600 on the side away from the array substrate 100, so as to reserve sufficient accommodation space for the light-emitting element 200 while making the overall structure more compact.

[0106] Specifically, to facilitate explanation of the tilt direction of the light emitting element 200, the retaining wall 600 is divided into a third retaining wall 630 and a fourth retaining wall 640. The third retaining wall 630 and the fourth retaining wall 640 are both double-layer structures, i.e., the third retaining wall 630 includes a third retaining wall section A 631 and a third retaining wall section B 632 connected to each other, and the fourth retaining wall 640 includes a fourth retaining wall section A 641 and a fourth retaining wall section B 642 connected to each other. When the light-emitting element 200 tilts toward the third retaining wall 630 in a direction perpendicular to the plane of the display panel 10, the third B retaining wall 632 of the third retaining wall 630, located on the side closer to the array substrate 100, can move relative to the third A retaining wall section 631 located away from the array substrate 100, away from the light-emitting element 200. In other words, the third A retaining wall section 631 is located on the side of the third B retaining wall section 632 closer to the light-emitting element 200. Simultaneously, the fourth B retaining wall section 642 of the fourth retaining wall 640, located on the side closer to the array substrate 100, can move relative to the fourth A retaining wall section 641 located away from the array substrate 100, toward the light-emitting element 200. In other words, the fourth A retaining wall section 641 is located on the side of the fourth B retaining wall section 642 away from the light-emitting element 200. This arrangement not only reserves sufficient space for the light-emitting element 200 but also eliminates the need to change the shape and structure of the color conversion layer 300 above the light-emitting element 200, resulting in a compact overall structure and a simple process.

[0107] Figure 26 yes Figure 11 Another cross-sectional diagram along the section line DD', refer to Figure 26 Optionally, the light-emitting element 200 includes a blue light-emitting element, and the color conversion layer 300 includes a green color conversion layer 310; along the light-emitting direction of the first light-emitting surface 21, the green color conversion layer 310 at least partially overlaps with the blue light-emitting element, and the plane where the first light-emitting surface 21 of the blue light-emitting element overlapping with the green color conversion layer 310 is located is not parallel to the plane where the color conversion layer 300 is located.

[0108] Exemplarily, the light-emitting element 200 can be a blue light-emitting element that emits blue light. A green color conversion layer 310 and a red color conversion layer 320 are respectively arranged at positions corresponding to the blue light-emitting element to excite red light and green light, respectively. The blue color conversion layer 330 can be a transparent substrate or other color conversion layer that meets the blue light emission conditions. The position where the blue color conversion layer 330 is located can also be set to be unobstructed. The blue light is still blue light after passing through the transparent substrate or directly emitted. The green light, red light and blue light are mixed to achieve color display.

[0109] Since the display panel 10 has a large color deviation when displaying a green image, the plane where the first light emitting surface 21 of the blue light emitting element overlapping with the green color conversion layer 310 is located can be set to be neither parallel nor perpendicular to the plane where the color conversion layer 300 is located. That is, only the first light emitting surface 21 of the blue light emitting element corresponding to the green color conversion layer 310 is set to be tilted, while the first light emitting surface 21 of the blue light emitting element corresponding to the red color conversion layer 320 and the blue color conversion layer 330 can be tilted or not tilted, so as to increase the excitation thickness of the green color conversion layer 310 along the light emitting direction of the first light emitting surface 21, improve the conversion efficiency of the blue light emitting element, reduce light leakage, and improve the problem of bluish color when displaying green images.

[0110] It should be noted that, along the light emitting direction of the first light emitting surface 21, the green color conversion layer 310 and the blue light emitting element need to at least partially overlap to ensure that the light emitted from the first light emitting surface 21 of the blue light emitting element can pass through the green color conversion layer 310 to the maximum extent, thereby realizing the conversion of green light; similarly, along the light emitting direction of the first light emitting surface 21, the red color conversion layer 320 and the corresponding blue light emitting element at least partially overlap to ensure that the light emitted from the first light emitting surface 21 of the blue light emitting element can pass through the red color conversion layer 320 to the maximum extent, thereby realizing the conversion of red light.

[0111] Based on the above embodiment, optionally, the plane where the first light emitting surface 21 of any blue light emitting element is located is not parallel to the plane where the color conversion layer 300 is located.

[0112] In this embodiment, the plane where the first light emitting surfaces 21 of all blue light emitting elements are located can be arranged to be neither parallel nor perpendicular to the plane where the color conversion layer 300 is located, that is, the first light emitting surfaces 21 of all blue light emitting elements are arranged to be inclined relative to the plane where the color conversion layer 300 is located, so as to increase the excitation thickness of all color conversion layers 300 along the light emitting direction of the first light emitting surface 21, improve the conversion efficiency of all light emitting elements, and further improve the color gamut and display effect of the display panel 10.

[0113] Figure 27 yes Figure 11 Another cross-sectional schematic diagram along the section line DD' is shown in FIG. Figure 27 As shown, optionally, the display panel 10 further includes: a color resist layer 700 , which is located on a side of the color conversion layer 300 away from the array substrate 100 ; along the light emitting direction of the first light emitting surface 21 , the color resist layer 700 at least partially overlaps with the light emitting element 200 .

[0114] In this embodiment, a color-resistance layer 700 is disposed on the side of the color conversion layer 300 facing away from the array substrate 100. This color-resistance layer 700 can adjust the color coordinates of light emitted from the color conversion layer 300 to meet the requirements of different manufacturers. The color of the color-resistance layer 700 is the same as the color of the corresponding color conversion layer 300, and can be selected based on actual conditions. Along the light-emitting direction of the first light-emitting surface 21, the color-resistance layer 700 at least partially overlaps with the light-emitting element 200, ensuring that light emitted from the first light-emitting surface 21 of the light-emitting element 200 passes through the color conversion layer 300 before entering the corresponding color-resistance layer 700, achieving color coordinate adjustment.

[0115] Optionally, the light-emitting element 200 includes a micro light-emitting element, such as a micro light-emitting diode (Micro LED). The size of Micro LED is in the micron level. Display panels using Micro LED have the characteristics of independent pixel control, independent light control, high brightness, low power consumption, ultra-high resolution and high color, and have become a hot spot for the development of future display technology.

[0116] Based on the same concept, an embodiment of the present invention further provides a display device, Figure 28 is a structural diagram of a display device provided by an embodiment of the present invention, such as Figure 28 As shown, the display device includes the display panel 10 provided by any embodiment of the present invention. Since the display device includes any of the above-mentioned display panels 10, the display device has corresponding functions and beneficial effects, which will not be described in detail here.

[0117] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0118] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: an array substrate; A plurality of light emitting elements are located on one side of the array substrate and are electrically connected to the array substrate; A color conversion layer is located on a side of the light-emitting element away from the array substrate; The light emitting element includes a first light emitting surface, and the plane where the first light emitting surface of at least one light emitting element is located is not parallel to the plane where the color conversion layer is located, thereby increasing the optical path of the light emitted from the first light emitting surface in the color conversion layer.

2. The display panel according to claim 1, wherein: The light-emitting element includes a light-emitting layer, and a plane where the light-emitting layer is located is parallel to a plane where the first light-emitting surface is located.

3. The display panel according to claim 1, wherein: A plurality of protrusion structures are provided on a surface of the array substrate on one side close to the light emitting element; The protruding structure includes a top surface away from the array substrate. The plane where the top surface is located is not parallel to the plane where the color conversion layer is located. The light emitting element is arranged on the side of the top surface facing the color conversion layer.

4. The display panel according to claim 3, wherein: The top surface of the same protrusion structure includes a first top surface and a second top surface that are not coplanar, and the light-emitting element includes a first light-emitting element and a second light-emitting element; The plane where the first top surface is located is not parallel to the plane where the color conversion layer is located, and the first light-emitting element is arranged on the side of the first top surface facing the color conversion layer; and the plane where the second top surface is located is not parallel to the plane where the color conversion layer is located, and the second light-emitting element is arranged on the side of the second top surface facing the color conversion layer.

5. The display panel according to claim 1, wherein: The display panel further includes: connecting electrodes; The connecting electrodes include a first connecting electrode and a second connecting electrode, and the light emitting element is electrically connected to the array substrate via the first connecting electrode and the second connecting electrode; Along a direction perpendicular to the plane where the array substrate is located, the first connecting electrode and the second connecting electrode have different heights.

6. The display panel according to claim 1, wherein: The light emitting element comprises: a first electrode, a second electrode and a light emitting layer; The first electrode and the second electrode are both located on a side of the light emitting layer facing the array substrate, and the first electrode and the second electrode have different heights along a direction perpendicular to a plane where the array substrate is located.

7. The display panel according to claim 1, wherein: The light-emitting element includes a first electrode, a second electrode and a light-emitting layer; Along a direction perpendicular to the plane where the display panel is located, the light-emitting layer includes a first semiconductor layer, a composite layer, and a second semiconductor layer that are stacked; The first electrode is located on a side of the first semiconductor layer away from the composite layer and is electrically connected to the first semiconductor layer; The second semiconductor layer includes a first region and a second region. The first region corresponds to the light-emitting region of the light-emitting layer. The second electrode is located on a side of the second region close to the composite layer and is electrically connected to the second semiconductor layer.

8. The display panel according to claim 1, wherein: The color conversion layer includes a first surface and a second surface that are arranged opposite to each other in a direction perpendicular to the plane where the display panel is located; the first surface and / or the second surface are not parallel to the plane where the display panel is located.

9. The display panel according to claim 2, wherein: The display panel further includes: a plurality of retaining walls, the retaining walls being located on a side of the array substrate close to the light emitting elements and between adjacent light emitting elements; The retaining wall includes: a first retaining wall and a second retaining wall, wherein the first retaining wall and the second retaining wall are respectively located on both sides of the light-emitting element; the first retaining wall includes a first side wall close to the light-emitting element, and the second retaining wall includes a second side wall close to the light-emitting element; Along a direction perpendicular to the plane of the display panel, the light emitting element is inclined toward the first retaining wall, at least part of the first side wall is inclined toward a side away from the light emitting element, and at least part of the second side wall is inclined toward a side close to the light emitting element.

10. The display panel according to claim 9, wherein: Along a direction perpendicular to the plane where the display panel is located, the first blocking wall is inclined in a direction away from the light emitting element, and the second blocking wall is inclined in a direction close to the light emitting element.

11. The display panel according to claim 9, wherein The first retaining wall comprises a first retaining wall section A and a first retaining wall section B that are connected to each other, wherein the first retaining wall section B is located between the first retaining wall section A and the array substrate; The second retaining wall comprises a second retaining wall section A and a second retaining wall section B connected to each other, wherein the second retaining wall section B is located between the second retaining wall section A and the array substrate; The first side wall includes a first A side wall and a first B side wall, the first A retaining wall section includes the first A side wall, and the first B retaining wall section includes the first B side wall; The second side wall includes a second A side wall and a second B side wall, the second A retaining wall section includes the second A side wall, and the second B retaining wall section includes the second B side wall; along a direction perpendicular to the plane where the display panel is located, the light-emitting element is inclined toward the first retaining wall, the first B side wall is inclined toward the side away from the light-emitting element, and the second B side wall is inclined toward the side close to the light-emitting element.

12. The display panel according to claim 11, wherein: Along a direction perpendicular to the plane where the display panel is located, the first B-blocking wall is inclined in a direction away from the light emitting element, and the second B-blocking wall is inclined in a direction close to the light emitting element.

13. The display panel according to claim 2, wherein: The light-emitting elements include a third light-emitting element and a fourth light-emitting element that are adjacent to each other, and the third light-emitting element and the fourth light-emitting element are inclined in opposite directions; The display panel further includes a plurality of retaining walls, wherein the retaining walls are located on a side of the array substrate close to the light emitting elements and between adjacent light emitting elements; The retaining wall includes an intermediate retaining wall located between the third light-emitting element and the fourth light-emitting element, and the intermediate retaining wall includes a third side wall close to the third light-emitting element and a fourth side wall close to the fourth light-emitting element; Along a direction perpendicular to the plane where the display panel is located: at least part of the third side wall is inclined in the same direction as the third light-emitting element, at least part of the fourth side wall is inclined in the same direction as the fourth light-emitting element, and the width of the middle retaining wall is gradually changed.

14. The display panel according to claim 3, wherein: The display panel further includes: a plurality of retaining walls, the retaining walls being located on a side of the array substrate close to the light emitting elements and between adjacent light emitting elements; The retaining wall is arranged on a side of the top surface facing the color conversion layer.

15. The display panel according to claim 2, wherein: The display panel further includes: a plurality of retaining walls, the retaining walls being located on a side of the array substrate close to the light emitting elements and between adjacent light emitting elements; The retaining wall comprises: a third retaining wall and a fourth retaining wall, wherein the third retaining wall and the fourth retaining wall are respectively located on both sides of the light emitting element; The third retaining wall comprises a third retaining wall section A and a third retaining wall section B that are connected to each other, and the third retaining wall section B is located between the third retaining wall section A and the array substrate; The fourth retaining wall comprises a fourth retaining wall section A and a fourth retaining wall section B that are connected to each other, and the fourth retaining wall section B is located between the fourth retaining wall section A and the array substrate; Along a direction perpendicular to the plane where the display panel is located, the light-emitting element is inclined toward the third retaining wall, the third A retaining wall section is located on the side of the third B retaining wall section close to the light-emitting element, and the fourth A retaining wall section is located on the side of the fourth B retaining wall section away from the light-emitting element.

16. The display panel according to claim 1, wherein The light emitting element includes a blue light emitting element, and the color conversion layer includes a green color conversion layer; Along the light emitting direction of the first light emitting surface, the green color conversion layer at least partially overlaps with the blue light emitting element, and the plane where the first light emitting surface of the blue light emitting element overlapping with the green color conversion layer is located is not parallel to the plane where the color conversion layer is located.

17. The display panel according to claim 16, wherein: The plane where the first light-emitting surface of any of the blue light-emitting elements is located is not parallel to the plane where the color conversion layer is located.

18. The display panel according to claim 1, wherein The display panel further includes: a color resist layer, the color resist layer being located on a side of the color conversion layer away from the array substrate; Along the light emitting direction of the first light emitting surface, the color resist layer and the light emitting element at least partially overlap.

19. The display panel according to claim 1, wherein The light emitting element includes a micro light emitting element.

20. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 19.

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