Light-emitting panel, preparation method and display panel

Abstract

The invention relates to the field of display, in particular to a light-emitting panel, a preparation method and a display panel, and aims to solve the problem that the outermost area of an existing light-emitting panel is dim. In order to achieve the purpose, the light-emitting panel comprises a substrate, a retaining wall and a light-emitting element, and the substrate comprises a first area, a third area surrounding the first area and a second area located between the third area and the first area; the retaining wall is arranged in the second area and surrounds the first area; the light-emitting element is at least arranged between the first area and the third area and between the retaining wall and the third area. The light emitted by the light-emitting element located between the retaining wall and the third area can be reflected by the retaining wall, so that the light intensity of the area between the retaining wall and the edge of the substrate is enhanced, the darkness of the light-emitting panel in the outermost area is weakened or even eliminated, and the display effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of display, and specifically provides a light-emitting panel and a preparation method thereof, as well as a display panel. Background Art

[0002] Display panels using Mini-LED as the light source are gaining popularity among consumers due to their high contrast, wide color gamut, and long lifespan. However, due to structural stability considerations, the LED chip is designed to be relatively far from the edge of the display area, resulting in dark bands around the Mini-LED backlight. Summary of the Invention

[0003] The present invention aims to solve the problems of the prior art and provides a light-emitting panel and a preparation method thereof, as well as a display panel.

[0004] In a first aspect, the present invention provides a light-emitting panel, comprising: a substrate, comprising a first area, a third area surrounding the first area, and a second area located between the third area and the first area; a retaining wall, arranged in the second area and surrounding the first area; and a light-emitting element, arranged at least in the first area and between the retaining wall and the third area.

[0005] In some exemplary embodiments, the light emitting element is further disposed between the retaining wall and the first area.

[0006] In some exemplary embodiments, the power of the light-emitting element located in the second region is greater than the power of the light-emitting element located in the first region.

[0007] In some exemplary embodiments, the retaining wall is arranged in a curved shape along the extension direction.

[0008] In some exemplary embodiments, the retaining wall has a first curved portion along the extension direction, the first curved portion is curved toward the first zone, and the light-emitting element located between the retaining wall and the third zone is arranged in the area surrounded by the first curved portion; and / or, the retaining wall has a second curved portion along the extension direction, the second curved portion is curved toward the third zone, and the light-emitting element located between the retaining wall and the first zone is arranged in the area surrounded by the second curved portion.

[0009] In some exemplary embodiments, a side of the cross section of the retaining wall facing the third area is configured as a curved surface.

[0010] In some exemplary embodiments, the curved surface includes a plurality of sub-curved surfaces having the same cross-sectional shape and continuously arranged along a direction perpendicular to the substrate.

[0011] In some exemplary embodiments, the sub-surface has a V-shaped cross section.

[0012] In some exemplary embodiments, a distance between adjacent sub-curved surfaces is P, a minimum distance between the barrier wall and the light-emitting element in the first region is A, and 0.4≤A / P≤0.8 is satisfied.

[0013] In some exemplary embodiments, a cross section of the sub-surface is arc-shaped.

[0014] In some exemplary embodiments, a distance between adjacent sub-curved surfaces is P, a minimum distance between the barrier wall and the light-emitting element in the first region is A, and 0.2≤A / P≤0.8 is satisfied.

[0015] In some exemplary embodiments, a side of the cross section of the retaining wall facing the third area is configured as a curved surface.

[0016] In a second aspect, the present invention provides a method for preparing a light-emitting panel, comprising: providing a substrate, the substrate comprising a first area, a third area surrounding the first area, and a second area located between the third area and the first area; setting a retaining wall in the second area; and setting a light-emitting element between the retaining wall and the third area and in the first area.

[0017] In a third aspect, the present invention provides a display panel comprising the above-mentioned light-emitting panel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The light-emitting panel provided by the present invention includes: a substrate, a retaining wall, and a light-emitting element. The substrate includes a first region, a third region surrounding the first region, and a second region located between the third region and the first region. The retaining wall is disposed in the second region and surrounds the first region. The light-emitting element is disposed at least within the first region and between the retaining wall and the third region. Light emitted by the light-emitting element located between the retaining wall and the third region can be reflected by the retaining wall, thereby increasing the light intensity in the area between the retaining wall and the edge of the substrate, thereby reducing or even eliminating dimming in the outermost areas of the light-emitting panel and improving the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0021] Figure 1 is a plan view schematic diagram of a light-emitting panel provided by at least one embodiment of the present disclosure;

[0022] Figure 2 is a partial schematic diagram of a light-emitting panel provided by at least one embodiment of the present disclosure;

[0023] Figure 3 yes Figure 1 The first cross-section along line AA;

[0024] Figure 4 yes Figure 1 The second cross-section along line AA;

[0025] Figure 5 is a first cross-sectional view of a display panel provided by at least one embodiment of the present disclosure;

[0026] Figure 6 This is a second cross-sectional view of a display panel provided by at least one embodiment of the present disclosure.

[0027] Description of reference numerals:

[0028] 1. Substrate; 11. First zone; 12. Second zone; 13. Third zone; 2. Light-emitting element; 3. Retaining wall; 31. Sub-surface; 32. First curved portion; 33. Second curved portion; 41. First uniform light film; 42. Second uniform light film; 43. Third uniform light film; 5. Quantum dot film; 6. Blue light-transmitting film; 7. Diffusion film; 8. Brightness-enhancing film; 9. Reflective brightness-enhancing film. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "installed," "disposed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] The light-emitting panel corresponds to the display area of ​​the display panel and provides backlight for the display area. The light-emitting panel includes a substrate and a light-emitting element, which is arranged on the light-emitting side of the substrate. In some examples, the light-emitting element is a mini-LED. For the stability of the mini-LED structure, the light-emitting element is located a certain distance from the edge of the substrate. Therefore, the light intensity at the edge of the substrate is low, resulting in a dark band in the second area of ​​the light-emitting panel, affecting the display effect.

[0033] In view of this, an embodiment of the present disclosure provides a light-emitting panel, comprising: a substrate, comprising a first area, a third area surrounding the first area, and a second area located between the third area and the first area; a retaining wall, arranged in the second area and surrounding the first area; and a light-emitting element, at least arranged in the first area and between the retaining wall and the third area.

[0034] The light-emitting panels of some embodiments of the present disclosure are described below through several specific examples.

[0035] Figure 1 1 is a schematic plan view of a light-emitting panel provided in at least one embodiment of the present disclosure. Figure 2 It is a partial schematic diagram of a light-emitting panel provided by at least one embodiment of the present disclosure.

[0036] like Figure 1 and Figure 2 As shown, the light-emitting panel includes a substrate 1, a light-emitting element 2, and a retaining wall 3. The substrate 1 includes a first area 11, a third area 13 surrounding the first area 11, and a second area 12 located between the third area 13 and the first area 11. The retaining wall 3 is located in the second area 12, and the retaining wall 3 surrounds the first area 11. The light-emitting element 2 is located at least between the retaining wall 3 and the third area 13 and in the first area 11. The light emitted by the light-emitting element 2 located between the retaining wall 3 and the third area 13 can be reflected by the retaining wall 3, thereby enhancing the light intensity of the area between the retaining wall 3 and the edge of the substrate 1, thereby weakening or even eliminating the dimming of the light-emitting panel in the outermost area (here referring to the area between the retaining wall 3 and the outer edge of the substrate 1), thereby improving the display effect.

[0037] For example, the light emitting elements 2 in the first area 11 are arranged in an array. For example, the light emitting elements 2 are mini-LEDs, and the long side size thereof is between 100 μm and 300 μm.

[0038] For example, the side of the retaining wall 3 facing the third area 13 is coated with a reflective material to enhance the reflective effect of the retaining wall 3. For example, the side of the retaining wall 3 facing the first area 11 is coated with a reflective material to enhance the reflective effect of the retaining wall 3.

[0039] In some embodiments, a light-emitting element 2 is also disposed between the retaining wall 3 and the first area 11. The light-emitting element 2 between the retaining wall 3 and the first area 11 can also increase the light intensity in the second area 12. In particular, due to the reflection effect of the retaining wall 3, the light intensity in the second area 12 can be further increased, thereby reducing or even eliminating the dimming of the light-emitting panel in the second area 12.

[0040] For example, the power of the light-emitting elements 2 located in the second area 12 is greater than the power of the light-emitting elements 2 located in the first area 11. As a result, the light emitted by the light-emitting elements 2 located in the second area 12, after being reflected by the retaining wall 3, can further increase the light intensity in the second and third areas 12, 13, making the light intensity in the second and third areas 12, 13 closer to the light intensity in the first area 11, thereby reducing or even eliminating the dimming of the light-emitting panel in the second and third areas 12, 13, and improving the display effect.

[0041] In some embodiments, the retaining wall 3 is arranged in a curved shape along its own extension direction. The retaining wall 3 arranged at both ends of the substrate 1 in the first direction X extends along the second direction Y, and the retaining wall 3 arranged at both ends of the substrate 1 in the second direction Y extends along the first direction X. For example, the curve is a continuous broken line or a wavy line. In this way, the diffuse reflection effect of the retaining wall 3 can be improved, thereby improving the uniformity of the light reflected by the retaining wall 3 and improving the visual effect of the display panel using the light-emitting panel in the edge area (here corresponding to the second area 12 and the third area 13 of the substrate 1). Of course, in other examples, the retaining wall 3 can also be set as a straight line.

[0042] For example, the retaining wall 3 has a first bend 32 along the extension direction, and the first bend 32 bends toward the first zone 11. The light-emitting element 2 located between the retaining wall 3 and the third zone 13 is arranged in the area surrounded by the first bend 32. The light emitted by the light-emitting element 2 located in the area surrounded by the first bend 32 can be fully reflected at the first bend 32 of the retaining wall 3 to enhance the light intensity of the second zone 12 and the third zone 13, thereby improving the visual effect of the display panel using the light-emitting panel in the edge area (corresponding to the second zone 12 and the third zone 13 of the substrate 1). It should be noted that the area surrounded by the first bend 32 specifically refers to the area between the first bend 32 and the line connecting the end points of the first bend 32 closest to the third zone 13 (such as Figure 2 Area B).

[0043] For example, the retaining wall 3 has a second curved portion 33 along the extension direction, and the second curved portion 33 is curved toward the third zone 13. The light-emitting element 2 located between the retaining wall 3 and the first zone 11 is arranged in the area surrounded by the second curved portion 33. The light emitted by the light-emitting element 2 located in the area surrounded by the second curved portion 33 can be fully reflected at the second curved portion 33 of the retaining wall 3 to enhance the light intensity in the second zone 12 and in the area where the first zone 11 is close to the second zone 12, thereby improving the visual effect of the display panel using the light-emitting panel in the edge area. It should be noted that the area surrounded by the second curved portion 33 specifically refers to the area between the second curved portion 33 and the line connecting the end points of the second curved portion 33 closest to the first zone 11 (such as Figure 2 Area C in the

[0044] For example, in some examples, the first curved portion 32 and the second curved portion 33 partially overlap.

[0045] In some examples, the arrangement of the light-emitting elements 2 disposed in the second area 12 (including the light-emitting elements 2 disposed between the retaining wall 3 and the third area 13 and between the retaining wall 3 and the first area 11) is the same as the extension of the retaining wall 3. For example, the retaining wall 3 extends in a zigzag shape, and the light-emitting elements 2 in the second area 12 are also arranged in a zigzag shape, with two adjacent light-emitting elements 2 located on either side of the retaining wall 3.

[0046] Figure 3 yes Figure 1 The first cross-section along line AA; Figure 4 yes Figure 1 The second cross-section along line AA.

[0047] In some embodiments, as Figure 3 As shown, the cross-section of the retaining wall 3 facing the third region 13 is configured as a curved surface. It should be noted that the cross-section of the retaining wall 3 extending along the first direction X specifically refers to a surface defined by a direction perpendicular to the substrate 1 (i.e., the Z direction) and the second direction Y. The cross-section of the retaining wall 3 extending along the second direction Y specifically refers to a surface defined by a direction perpendicular to the substrate 1 (i.e., the Z direction) and the first direction X.

[0048] For example, the curved surface includes multiple sub-curved surfaces 31 with the same cross-sectional shape and arranged continuously in a direction perpendicular to the substrate 1. These sub-curved surfaces 31 are sequentially connected to form the profile of the side of the retaining wall 3 facing the third area 13. This enhances the diffuse reflection effect of the side of the retaining wall 3 facing the third area 13, thereby improving the uniformity of light reflected by the side of the retaining wall 3 facing the third area 13 and enhancing the visual quality of a display panel using the light-emitting panel. For example, the sub-curved surfaces 31 may be convex toward the third area 13. For example, the sub-curved surfaces 31 may be concave away from the third area 13.

[0049] For example, Figure 3 As shown, the cross-section of the sub-curved surface 31 is V-shaped. The depth of the V-shaped sub-curved surface 31 is H, the distance between adjacent sub-curved surfaces 31 is P, and the minimum spacing between the retaining wall 3 and the light-emitting element 2 in the first region 11 is A. For example, when H = 0.05 μm, 0.4 ≤ A / P ≤ 0.8 is satisfied. Of course, when H is other values, 0.4 ≤ A / P ≤ 0.8 is also satisfied. Among them, the larger the value of A / P, the larger the distance between the light-emitting element 2 in the first zone 11 and the retaining wall 3, and the weaker the light-emitting element 2 in the first zone 11 is in assisting in improving the dim light in the second zone 12 and the third zone 13. Therefore, A / P≤0.8 must be satisfied so that the light-emitting element 2 in the first zone 11 can enhance the light intensity in the second zone 12 and the third zone 13; at the same time, the smaller the value of A / P, the smaller the distance between the light-emitting element 2 in the first zone 11 and the retaining wall 3, and the stronger the light-emitting element 2 in the first zone 11 is in assisting in improving the dim light in the second zone 12 and the third zone 13. However, the retaining wall 3 may interfere with the light-emitting element 2 during installation. Therefore, 0.4≤A / P must be satisfied to ensure that the retaining wall 3 can be smoothly set on the substrate 1.

[0050] It should be noted that the distance between the light emitting element 2 and the retaining wall 3 in the second area 12 is smaller than the distance between the light emitting element 2 and the retaining wall 3 in the first area 11 .

[0051] For example, Figure 4 As shown, the sub-surface 31 has an arcuate cross-section. The arcuate sub-surface 31 has a depth of H and a radius of R. The distance between adjacent sub-surfaces 31 is P. The minimum spacing between the retaining wall 3 and the light-emitting element 2 in the first region 11 is A. For example, when H = 0.05 μm and R = 0.05 μm, 0.2 ≤ A / P ≤ 0.8 is satisfied. Of course, when H and R have other values, 0.2 ≤ A / P ≤ 0.8 is also satisfied.

[0052] For example, the side of the cross-section of the retaining wall 3 facing the third area 13 can also be configured as a curved surface. This improves the diffuse reflection effect of the side of the retaining wall 3 facing the first area 11, thereby increasing the uniformity of light reflected by the side of the retaining wall 3 facing the first area 11 and improving the visual quality of a display panel using the light-emitting panel. For example, the side of the cross-section of the retaining wall 3 facing the first area 11 can be symmetrical or identical to the side of the cross-section of the retaining wall 3 facing the third area 13. For example, the side of the cross-section of the retaining wall 3 facing the first area 11 can have a different curved shape than the side of the cross-section of the retaining wall 3 facing the third area 13.

[0053] At least one embodiment of the present disclosure further provides a method for manufacturing a light-emitting panel, which can be used to manufacture the light-emitting panel described above. The method comprises: providing a substrate 1, the substrate 1 comprising a first region 11, a third region 13 surrounding the first region 11, and a second region 12 located between the third region 13 and the first region 11; providing a retaining wall 3 in the second region 12; and providing a light-emitting element 2 between the retaining wall 3 and the third region 13, as well as in the first region 11.

[0054] Below, the method for preparing the light-emitting panel provided by the embodiment of the present disclosure is introduced by taking the formation of the light-emitting panel shown in the figure as an example.

[0055] First, a substrate 1 is provided. The substrate 1 includes a first area 11, a third area 13 surrounding the first area 11, and a second area 12 located between the third area 13 and the first area 11. For example, the substrate 1 is a glass substrate, an aluminum substrate, a PCB substrate, or an FPC substrate.

[0056] The retaining wall 3 is provided in the second area 12, and the retaining wall 3 surrounds the first area 11. After the retaining wall 3 is formed, it is provided in the second area 12 of the substrate 1 by a patch method.

[0057] For example, the main structure of the retaining wall 3 is first formed, and then a reflective material is coated on the side of the retaining wall 3 facing the third area 13, and a reflective material is coated on the side of the retaining wall 3 facing the first area 11. For example, a mold having a curved surface is used to emboss the surface of the retaining wall 3 facing the third area 13, so that the resulting profile includes multiple sub-curved surfaces 31 with the same cross-sectional shape and arranged continuously in a direction perpendicular to the substrate 1, thereby enhancing the diffuse reflection effect of the retaining wall 3. For example, the sub-curved surfaces 31 are V-shaped or R-shaped.

[0058] For example, after the embossing is completed on the surface of the retaining wall 3 facing the third area 13 , the retaining wall 3 is rotated 180°, and the embossing is performed on the surface of the retaining wall 3 facing the first area 11 using the same mold.

[0059] For example, the main structure of the retaining wall 3 is arranged in a curve along its own extension direction, such as a broken line or a wavy line. For example, the material of the retaining wall 3 is PMMA (Polymethyl methacrylate, organic glass) or PC (Polycarbonate).

[0060] Light-emitting elements 2 are disposed between the retaining wall 3 and the third region 13, between the retaining wall 3 and the first region 11, and within the first region 11. The light-emitting elements 2 can be disposed on the substrate 1 in the form of patches. The arrangement of the light-emitting elements 2 between the retaining wall 3 and the third region 13, between the retaining wall 3 and the first region 11, and within the first region 11 is not particularly limited. For example, the light-emitting elements 2 within the first region 11 can be uniformly arranged in an array.

[0061] In some examples, the arrangement of the light-emitting elements 2 disposed in the second area 12 (including the light-emitting elements 2 disposed between the retaining wall 3 and the third area 13 and between the retaining wall 3 and the first area 11) is the same as the extension of the retaining wall 3. For example, the retaining wall 3 extends in a zigzag shape, and the light-emitting elements 2 in the second area 12 are also arranged in a zigzag shape, with two adjacent light-emitting elements 2 located on either side of the retaining wall 3.

[0062] At least one embodiment of the present disclosure further provides a display panel including the above-mentioned light-emitting panel. It should be noted that the light-emitting panel provided by the present disclosure can be applied to any display panel using a light-emitting panel, such as a liquid crystal display panel, an LED display panel, and the embodiments of the present disclosure are not limited thereto.

[0063] Figure 5 is a first cross-sectional view of a display panel provided by at least one embodiment of the present disclosure; Figure 6 This is a second cross-sectional view of a display panel provided by at least one embodiment of the present disclosure.

[0064] like Figure 5 and Figure 6 As shown, in addition, the display panel also includes a light uniforming film, a quantum dot film 5, a blue light-transmitting film 6 and a diffusion film 7.

[0065] Among them, the light-diffusing film can improve the transmittance and scattering uniformity of light, thereby improving the visual effect of the display. The main function of the light-diffusing film is to enhance the contrast and brightness of the image and reduce eye fatigue by adjusting the refractive index and reflectivity of light. In addition, the light-diffusing film can effectively reduce reflections and glare, increase the viewing angle range of the screen, and thus improve the user experience. For example, the light-diffusing film is set with one to three layers, or more than three layers. The more layers of light-diffusing film, the better the uniformity of the light emitted by the light-emitting panel.

[0066] For example, the light emitted by the light-emitting element 2 in the light-emitting panel is blue light. The blue light-transmitting film 6 allows the blue light emitted by the light-emitting element 2 to pass through the blue light-transmitting film 6, thereby filtering out stray light. After passing through the quantum dot film 5, the blue light can excite the quantum dots in the quantum dot film 5, converting the blue light into white light. The blue light-transmitting film 6 is located on the side of the quantum dot film 5 facing the substrate. For example, the blue light-transmitting film 6 and the quantum dot film 5 are manufactured as a composite film material.

[0067] The diffusion film 7 is provided with a diffusion layer of multiple materials with randomly arranged refractive indices on its surface or inside. When light propagates on the surface of the diffusion film 7 or in it, it continuously passes through two media with different refractive indices. At the same time, the light will undergo multiple refractions, reflections and scattering phenomena, thus forming an optical diffusion effect. After the light source is diffused by the diffusion material, it can become a secondary light source with a larger area, better uniformity and stable color. In the example of the present invention, the light emitted by the light-emitting element 2 located in the second area 12 is reflected by the retaining wall 3, which can enhance the light intensity of the display panel at the edge of the display area. Therefore, there is no need to print micro-gradient ink particles on the edge of the diffusion film 7 to enhance the angle of light scattering, which can avoid display defects caused by the shedding of ink particles on the diffusion film 7.

[0068] The stacking order of the composite film material of the blue light-transmitting film 6 and the quantum dot film 5, the multi-layer light-homogenizing film and the diffusion film 7 can be arranged arbitrarily. Figure 5 As shown, the light-homogenizing film is three-layered. On the light-emitting side of the substrate 1, the stacking order of the film layers is: first light-homogenizing film 41, second light-homogenizing film 42, third light-homogenizing film 43, blue light-transmitting film 6, quantum dot film 5 and diffusion film 7. For example, Figure 6 As shown, the light-homogenizing film is a three-layer film. On the light-emitting side of the substrate 1 , the stacking order of the film layers is: first light-homogenizing film 41 , blue light-transmitting film 6 , quantum dot film 5 , second light-homogenizing film 42 , diffusion film 7 and third light-homogenizing film 43 .

[0069] For example, the display panel further includes a brightness enhancement film 8 and a reflective brightness enhancement film 9. The light uniformity film, the diffusion film 7, the blue light-transmitting film 6 and the quantum dot film 5 are located between the brightness enhancement film 8 and the substrate 1, and the reflective brightness enhancement film 9 is located on the side of the brightness enhancement film 8 away from the substrate 1.

[0070] The brightness enhancement film 8 can significantly improve the brightness and contrast of the display panel, making the screen image clearer and sharper; at the same time, the brightness enhancement film 8 can effectively reduce reflection and scattering, reduce glare, and relieve eye fatigue.

[0071] The reflective film 9 can reduce the reflected light on the display panel surface and reduce the interference of external light, thereby improving the display effect and visual comfort. Especially in bright environments, the reflective film can effectively prevent glare and interference caused by reflected light, protecting the user's visual health.

[0072] The display panel provided in the embodiments of the present disclosure can be used in a display device, which can be any product or component with a display function, such as a mobile phone, tablet computer, television, display panel, laptop computer, digital photo frame, navigator, etc. The embodiments of the present disclosure are not limited to this.

[0073] There are a few points to note:

[0074] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0075] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or intervening elements may be present.

[0076] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0077] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A light-emitting panel, characterized in that: include: a substrate comprising a first region, a third region surrounding the first region, and a second region located between the third region and the first region; a retaining wall located in the second area and surrounding the first area; The light-emitting element is located at least in the first area and between the retaining wall and the third area.

2. The light emitting panel according to claim 1, wherein: The light emitting element is further disposed between the retaining wall and the first area.

3. The light emitting panel according to claim 1, wherein: The power of the light-emitting element located in the second area is greater than the power of the light-emitting element located in the first area.

4. The light-emitting panel according to claim 2, wherein: The retaining wall is arranged in a curve along the extension direction.

5. The light emitting panel according to claim 4, wherein: The retaining wall has a first curved portion along the extension direction, the first curved portion is curved toward the first area, and the light emitting element located between the retaining wall and the third area is arranged in the area surrounded by the first curved portion; and / or, The retaining wall has a second curved portion along the extending direction, the second curved portion is curved toward the third area, and the light emitting element located between the retaining wall and the first area is disposed in an area surrounded by the second curved portion.

6. The light emitting panel according to claim 1, wherein: The profile of the side of the cross section of the retaining wall facing the third area is set to be a curved surface.

7. The light emitting panel according to claim 6, wherein: The curved surface includes a plurality of sub-curved surfaces having the same cross-sectional shape and continuously arranged along a direction perpendicular to the substrate.

8. The light emitting panel according to claim 7, wherein: The cross section of the sub-curved surface is V-shaped.

9. The light emitting panel according to claim 8, wherein: The distance between adjacent sub-curved surfaces is P, the minimum distance between the retaining wall and the light-emitting element in the first area is A, and 0.4≤A / P≤0.8 is satisfied.

10. The light emitting panel according to claim 7, wherein: The cross section of the sub-curved surface is arc-shaped.

11. The light emitting panel according to claim 10, wherein: The distance between adjacent sub-curved surfaces is P, the minimum distance between the retaining wall and the light-emitting element in the first area is A, and 0.2≤A / P≤0.8 is satisfied.

12. The light-emitting panel according to claim 6, wherein: The profile of the side of the cross section of the retaining wall facing the third area is set to be a curved surface.

13. A method for preparing a light-emitting panel, characterized in that: include: providing a substrate comprising a first region, a third region surrounding the first region, and a second region located between the third region and the first region; providing a retaining wall in the second zone; Light-emitting elements are arranged between the retaining wall and the third area and in the first area.

14. A display panel, characterized in that: A light-emitting panel comprising the light-emitting panel according to any one of claims 1 to 12.

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