Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a substrate and a plurality of light-emitting units; a medium layer is arranged on a side of the light-emitting unit away from the substrate, the medium layer comprises a first surface close to the light-emitting unit and a second surface away from the light-emitting unit, the first surface is parallel to a plane where the substrate is located, and in a direction from a center of the display area to an edge of the display area, one end of the second surface close to the center of the display area is inclined to the side away from the light-emitting unit, or one end of the second surface away from the center of the display area is inclined to the side away from the light-emitting unit; a lens and a filling layer. Thus, the angle customization function of the display panel can be improved, and the brightness loss at a specific angle can be reduced.

Description

Technical Field

[0001] This invention relates to the field of displays, and more specifically, to display panels and display devices. Background Technology

[0002] With the development of AR (Augmented Reality) and VR (Virtual Reality) technologies, OLED has gradually emerged as the best display device for AR / VR. To meet the viewing angle requirements of the optical engine, related technologies offset both the lens and the color filter relative to the center of the light-emitting unit, shifting the lens focus to a position that converges light at a small angle. However, limited by pixel size and the light-emitting area of ​​the light-emitting unit, the customized viewing angle cannot be further improved, and the brightness of the display panel is severely reduced after the lens is shifted. Therefore, current display panels still require further improvement. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] In one aspect of the present invention, a display panel is provided, comprising a display area, the display area comprising: a substrate; a plurality of light-emitting units, the plurality of light-emitting units being spaced apart on one side of the substrate; a dielectric layer, the dielectric layer being disposed on the side of the light-emitting units away from the substrate, the dielectric layer comprising a first surface near the light-emitting units and a second surface away from the light-emitting units, the first surface being parallel to the plane of the substrate, and the second surface being inclined at one end near the center of the display area toward the side away from the light-emitting units, or the second surface being inclined at one end away from the center of the display area toward the side away from the light-emitting units; a plurality of lenses, the lenses being disposed on the side of the dielectric layer away from the light-emitting units, the plurality of lenses being disposed one-to-one with the plurality of light-emitting units; and a filling layer, the filling layer being disposed on the side of the dielectric layer away from the light-emitting units, the filling layer covering the surface of the lenses and the surface of the dielectric layer exposed by the lenses, the refractive index of the filling layer being less than the refractive index of the lenses. This improves the angle customization function of the display panel, allowing light emitted by the light-emitting units to be deflected at a larger angle according to optical engine requirements, while reducing brightness loss at specific angles.

[0005] According to some embodiments of the present invention, at least a portion of the orthographic projection of the center of the light-emitting unit onto the substrate and the orthographic projection of the focal point of the lens corresponding to the light-emitting unit onto the substrate do not overlap. This further enhances the angle customization of the display panel, allowing the light emitted by the light-emitting unit to be deflected at a greater angle according to optical engine requirements.

[0006] According to some embodiments of the present invention, in the direction from the center to the edge of the display area, the display area includes a plurality of sequentially arranged pixel areas, and the tilt angle of the second surface portion corresponding to the dielectric layer in each pixel area is the same. Therefore, the light emitted by each light-emitting unit is deflected at the same angle, which can improve the brightness of the display panel at the same deflection angle.

[0007] According to some embodiments of the present invention, in the direction from the center to the edge of the display area, the display area includes a plurality of pixel areas, and in the direction from the center to the edge of the display area, the tilt angle of the second surface portion corresponding to the dielectric layer in each pixel area gradually increases or gradually decreases. This causes the light emitted by the plurality of light-emitting units to have different deflection angles.

[0008] According to some embodiments of the present invention, the angle between the second surface of the dielectric layer and the horizontal plane is α, and the light emitted by the light-emitting unit is deflected by an angle β according to some embodiments of the present invention, wherein α and β satisfy the following relationship: Wherein, n1 is the refractive index of the medium layer, and n2 is the refractive index of the lens.

[0009] According to some embodiments of the present invention, the orthographic projection of the lens disposed corresponding to the light-emitting unit on the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit on the substrate. This avoids the lens covering adjacent light-emitting units.

[0010] According to some embodiments of the present invention, the pixel area is annular. This allows for better matching of the optical mechanism and improves visual effects.

[0011] According to some embodiments of the present invention, the display panel further includes a color filter layer, the color filter comprising a plurality of sub-color filters, the plurality of sub-color filters being disposed one-to-one with a plurality of light-emitting units, wherein the orthographic projection of the center of the light-emitting unit on the substrate and the orthographic projection of the center of the sub-color filter disposed corresponding to the light-emitting unit on the substrate do not overlap. This improves viewing angle distortion.

[0012] According to some embodiments of the present invention, the orthographic projection of the sub-color filter corresponding to the light-emitting unit on the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit on the substrate.

[0013] According to some embodiments of the present invention, the radius of curvature of the lens is the same in each pixel region. This reduces the complexity of the lens forming process.

[0014] According to some embodiments of the present invention, in the direction from the center of the display area to the edge of the display area, the radius of curvature of the lens in each pixel area gradually increases or decreases. This allows for the provision of light beams with different orientations, reducing the complexity of the optical mechanism.

[0015] According to some embodiments of the present invention, the orthographic projection of the lens disposed corresponding to the light-emitting unit on the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit on the substrate.

[0016] According to some embodiments of the present invention, the orthogonal projection of the lens disposed corresponding to the sub-color filter on the substrate is located within the range of the orthogonal projection of the sub-color filter on the substrate.

[0017] According to some embodiments of the present invention, the substrate includes a support surface adjacent to the lens, and the surfaces of the plurality of lenses in each pixel region that are away from the substrate are at the same maximum vertical distance from the support surface. This reduces the thickness of the display panel.

[0018] According to some embodiments of the present invention, the dielectric layer is a planarization layer.

[0019] In another aspect of the invention, a display device is provided, comprising the aforementioned display panel. Thus, the display device possesses all the features and advantages of the aforementioned display panel, which will not be repeated here. In general, it has at least the advantage of being able to meet customized requirements for different viewing angles. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 A schematic diagram of the structure of a display panel according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the structure of a display panel in the related technology is shown.

[0024] Figure 4 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0025] Figure 5 A schematic diagram of a pixel region according to an embodiment of the present invention is shown.

[0026] Figure 6 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0027] Figure 7 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0028] Figure 8 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0029] Figure 9 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0030] Figure 10 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0031] Figure 11 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0032] Figure 12 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0033] Figure 13 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0034] Figure 14 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0035] Figure 15 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0036] Figure 16 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0037] Figure 17 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0038] Figure 18 A schematic diagram of the structure of a display panel according to another embodiment of the present invention is shown.

[0039] Figure label:

[0040] 1: Display panel; 11: Substrate; 12: Light-emitting unit; 121: Red light-emitting unit; 122: Green light-emitting unit; 123: Blue light-emitting unit; 131: Red sub-color filter; 132: Green sub-color filter; 133: Blue sub-color filter; 14: Dielectric layer; 15: Lens; 16: Filler layer; 17: Encapsulation layer; 18: Protective layer. Detailed Implementation

[0041] The embodiments of the present invention are described in detail below. These embodiments are exemplary and are only used to explain the present invention, and should not be construed as limiting the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in the art or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all commercially available conventional products.

[0042] In one aspect of the invention, a display panel 1 is provided, with reference to... Figure 1 and Figure 2 The display panel 1 includes a substrate 11; a plurality of light-emitting units 12, which are spaced apart on one side of the substrate 11; and a dielectric layer 14 disposed on the side of the light-emitting units 12 away from the substrate 11. The dielectric layer 14 includes a first surface near the light-emitting unit 12 and a second surface away from the light-emitting unit 12. The first surface is parallel to the plane of the substrate 11. In the direction from the center of the display area to the edge of the display area, the end of the second surface near the center of the display area is inclined toward the side away from the light-emitting unit 12 (see reference). Figure 1 ), or the end of the second surface away from the center of the display area is tilted toward the side away from the light-emitting unit 12 (see reference). Figure 2 The medium layer 14 contains a plurality of lenses 15 disposed on the side of the medium layer 14 away from the light-emitting unit 12, with each lens 15 corresponding to one of the light-emitting units 12; a filling layer 16 disposed on the side of the medium layer 14 away from the light-emitting unit 12, covering the surface of the lens 15 and the surface of the medium layer 14 exposed by the lens 15, wherein the refractive index of the filling layer 16 is less than that of the lens 15.

[0043] Specifically, the light-emitting unit 12 may include a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123.

[0044] A color filter layer is disposed on the side of the light-emitting unit 122 away from the substrate 11. The color filter layer includes a red sub-color filter 131, a green sub-color filter 132, and a blue sub-color filter 133. The red sub-color filter 131 is disposed corresponding to the red light-emitting unit 121, the green sub-color filter 132 is disposed corresponding to the green light-emitting unit 122, and the blue sub-color filter 133 is disposed corresponding to the blue light-emitting unit 123.

[0045] The dielectric layer 14 is disposed on the side of the color filter layer away from the substrate 11. The orthographic projection of the dielectric layer 14 onto the substrate 11 covers the orthographic projection of the light-emitting unit 12 onto the substrate 11. The second surface of the dielectric layer 14 is inclined, and the inclination of the second surface includes: the end of the second surface near the center of the display area is inclined toward the side away from the light-emitting unit 12 (see reference). Figure 1 That is, along the direction from the center of the display area to the edge of the display area, the thickness of the dielectric layer 14 gradually decreases; or the end of the second surface away from the center of the display area is inclined toward the side away from the light-emitting unit 12 (see reference). Figure 2 That is, along the direction from the center of the display area to the edge of the display area, the thickness of the dielectric layer 14 gradually increases.

[0046] A prism is provided on the side of the dielectric layer 14 away from the substrate 11, with red light emitting unit 121, green light emitting unit 122, and blue light emitting unit 123 arranged in a corresponding manner. A filling layer 16 is provided on the side of the dielectric layer 14 away from the substrate 11. The refractive index of the lens 15 is greater than that of the filling layer 16. When the end of the second surface away from the center of the display area is tilted towards the side away from the light emitting unit 12, the light emitted by the light emitting unit 12 is perpendicularly entered into the lens 15 and deflected in a direction away from the center of the display area (reference). Figure 1 When the end of the second surface furthest from the center of the display area is tilted toward the side furthest from the light-emitting unit 12, the light emitted by the light-emitting unit 12 is perpendicularly received by the lens 15 and deflected toward the center of the display area (reference). Figure 2 The specific deflection direction can be designed by those skilled in the art according to the requirements of the display device, specifying the tilting method of the second surface of the dielectric layer 14.

[0047] This enhances the angle customization function of the display panel 1, allowing the light emitted by the light-emitting unit 12 to be deflected at a larger angle according to the optical engine requirements, while reducing brightness loss at the customized angle.

[0048] The principle by which the present invention achieves the above-mentioned beneficial effects will be explained in detail below:

[0049] refer to Figure 3In related technologies, display panels 1 deflect light emitted by light-emitting units at small angles by translating lens 15. This causes some light emitted by light-emitting units 12, which obliquely enters lens 15, to be deflected at a small angle at the interface between lens 15 and filling layer 16, achieving a certain degree of small-angle customization. However, limited by pixel size and the area of ​​light-emitting units, the deflection angle cannot be further increased after lens 15 is shifted to a certain extent. Moreover, due to the gap between adjacent lenses 15, some light emitted by light-emitting units 12 at a normal viewing angle leaks out between them after lens 15 is translated, increasing brightness loss. The display panel 1 proposed in this invention, because the second surface of the dielectric layer 14 away from the substrate 11 is tilted, causes the orthogonal projection of the focal point of lens 15 on the dielectric layer 14 onto the substrate 11 to be offset relative to the center of light-emitting unit 12. Light emitted from the center of light-emitting unit 12, after illuminating lens 15, can be deflected at a larger angle. Specifically, the tilt angle of the second surface of the dielectric layer 14 can be designed according to the angle requirements of the display device to meet different angle customization needs. Since the light emitted from the center of the light-emitting unit 12 is the brightest, deflecting the light emitted from the center of the light-emitting unit 12 can reduce the loss of brightness.

[0050] According to some embodiments of the present invention, reference Figure 4 At least some of the orthographic projections of the center of the light-emitting unit 12 onto the substrate 11 and the orthographic projections of the focal point of the lens 15 corresponding to the light-emitting unit 12 onto the substrate 11 do not overlap. Specifically, refer to Figure 4 Multiple lenses 15 are arranged one-to-one with red light-emitting units 121, green light-emitting units 122, and blue light-emitting units 123. After the second surface of the dielectric layer 14 is tilted, the lenses 15 arranged one-to-one with the light-emitting units 12 can be moved as a whole towards the center of the display area, or the lenses 15 arranged one-to-one with the light-emitting units 12 can be moved as a whole towards the edge of the display area. As a result, when the light emitted by the light-emitting units 12 shines on the lenses 15, it can be deflected at a larger angle at the interface between the lenses 15 and the filling layer 16, thereby realizing a larger angle customization function.

[0051] According to some embodiments of the present invention, in the direction from the center of the display area to the edge of the display area, the display area includes a plurality of sequentially arranged pixel areas, and the tilt angle of the second surface portion corresponding to the dielectric layer 14 in each pixel area is the same. Specifically, refer to Figure 5 In the direction from the center to the edge of the display area, the display panel 1 includes sequentially arranged pixel areas f1, f2, f3, ... fz, each pixel area having the same tilt angle of the second surface of the dielectric layer 14 (reference). Figure 6Therefore, the light emitted by the light-emitting unit 12 in different pixel areas can be deflected at the same angle, increasing the brightness of the light at a specific viewing angle and improving the display effect.

[0052] According to some embodiments of the present invention, in the direction from the center of the display area to the edge of the display area, the display area includes a plurality of pixel areas, and in the direction from the center of the display area to the edge of the display area, the tilt angle of the second surface portion corresponding to the dielectric layer 14 in each pixel area gradually increases or gradually decreases.

[0053] According to some specific embodiments of the present invention, reference is made to Figure 5 and Figure 7 In the direction from the center to the edge of the display area, the display panel 1 includes sequentially arranged pixel areas f1, f2, f3, ... fz, with the tilt angle of the second surface corresponding to the dielectric layer 14 gradually increasing within each pixel area. Specifically, refer to... Figure 7 In the direction from the center of the display area to the edge of the display area, when the end of the second surface near the center of the display area is tilted towards the side away from the light-emitting unit 12, the tilt angle of the second surface in each pixel area gradually increases (α1 > α2); Reference Figure 8 Alternatively, along the direction from the center to the edge of the display area, when the end of the second surface away from the center of the display area is tilted towards the side away from the light-emitting unit 12, the tilt angle of the second surface in each pixel area gradually increases (α1 > α2). Thus, larger angle customization can be achieved to meet the visual requirements of AR / VR.

[0054] According to some specific embodiments of the present invention, in the direction from the center of the display area to the edge of the display area, the display panel 1 includes sequentially arranged pixel areas f1, f2, f3, ... fz, and the tilt angle of the second surface corresponding to the dielectric layer 14 in each pixel area gradually decreases. Specifically, refer to... Figure 9 In the direction from the center of the display area to the edge of the display area, when the end of the second surface near the center of the display area is tilted towards the side away from the light-emitting unit 12, the tilt angle of the second surface in each pixel area gradually decreases (α1 > α2); Reference Figure 10 Alternatively, in the direction from the center of the display area to its edge, when the end of the second surface away from the center of the display area is tilted toward the side away from the light-emitting unit 12, the tilt angle of the second surface in each pixel area gradually decreases (α1 > α2). This allows for greater angle customization capabilities, meeting the visual requirements of the optical engine.

[0055] According to some embodiments of the present invention, in the direction from the center to the edge of the display area, the display panel 1 includes f1 pixel area, f2 pixel area, f3 pixel area...fz pixel area arranged sequentially, and the tilt angle of the second surface corresponding to the medium layer 14 in each pixel area can also be irregularly arranged. Specifically, the tilt mode of the second surface of the medium layer 14 in each pixel area can be designed according to the angle requirements of AR / VR.

[0056] According to some embodiments of the present invention, reference Figure 2 The angle between the second surface of the dielectric layer 14 and the horizontal plane is α, and the angle of deflection of the light emitted by the light-emitting unit 12 is β. α and β satisfy the following relationship: Wherein, n1 is the refractive index of the dielectric layer 14, and n2 is the refractive index of the lens 15. Therefore, the tilt angle of the second surface can be designed according to the angular requirements of the optomechanical system.

[0057] According to some embodiments of the present invention, the orthographic projection of the lens 15 disposed corresponding to the light-emitting unit 12 on the substrate 11 does not overlap with the orthographic projection of the adjacent light-emitting unit 12 on the substrate 11. Specifically, refer to Figure 2 After the lens 15 is translated, the orthographic projection of the lens 15 corresponding to the red light emitting unit 121 onto the substrate 11 is completely different from the orthographic projection of the green light emitting unit 122 onto the substrate 11, or the orthographic projection of the lens 15 corresponding to the red light emitting unit 121 onto the substrate 11 is tangent to the edge of the orthographic projection of the green light emitting unit 122 onto the substrate 11. This prevents different colors of light from shining into the same lens 15, improving the display effect of the display panel 1.

[0058] According to some embodiments of the present invention, the pixel region is annular. (See reference) Figure 5 Along the direction from the center to the edge of the display area, the display panel 1 includes sequentially arranged pixel areas f1, f2, f3, ... fz, each of which is circular. This better matches the viewing habits of the human eye and improves the visual experience of the optical engine.

[0059] According to some embodiments of the present invention, the display panel 1 further includes: a color filter layer, the color filter including a plurality of sub-color filters, the plurality of sub-color filters being disposed one-to-one with a plurality of light-emitting units 12, wherein the orthographic projection of the center of the light-emitting unit 12 on the substrate 11 and the orthographic projection of the center of the sub-color filter disposed corresponding to the light-emitting unit 12 on the substrate 11 do not overlap. Specifically, refer to Figures 6-11A pixel area may include a red light emitting unit 121, a green light emitting unit 122 and a blue light emitting unit 123. The color filter layer includes a red sub-color filter 131, a green sub-color filter 132 and a blue sub-color filter 133. Based on the translation lens 15, the display panel 1 can further translate the color filter, thereby achieving greater angle customization while improving the viewing angle deviation and enhancing the display effect.

[0060] According to some embodiments of the present invention, the orthographic projection of the sub-color filter corresponding to the light-emitting unit 12 on the substrate 11 does not overlap with the orthographic projection of the adjacent light-emitting unit 12 on the substrate 11. Specifically, refer to... Figure 11 After the color filter layer is shifted, the orthographic projection of the red sub-color filter 131 on the substrate 11 and the orthographic projection of the adjacent green light-emitting unit 122 on the substrate 11 do not overlap. This prevents the red sub-color filter 131 corresponding to the red light-emitting unit 121 from covering the green light-emitting unit 122, improving viewing angle distortion and enhancing the display effect.

[0061] According to some embodiments of the present invention, the radius of curvature of the lens 15 is the same within each pixel region. Specifically, refer to... Figure 5 and Figure 12 Along the direction from the center to the edge of the display area, the end of the second surface near the center of the display area is inclined away from the light-emitting unit 12. The orthographic projection of the center of the light-emitting unit 12 onto the substrate 11 and the orthographic projection of the center of the sub-color filter corresponding to the light-emitting unit 12 onto the substrate 11 do not overlap. The display panel 1 includes sequentially arranged pixel areas f1, f2, f3, ..., fz. Taking the f1 and f2 pixel areas as examples, the radii of curvature of the multiple lenses are the same along the direction from the center to the edge of the display area. Therefore, while achieving angle customization and improving viewing angle distortion, the complexity of the lens 15 fabrication process is reduced, and the manufacturing cost is lowered.

[0062] It should be noted that the radius of curvature of lens 15 can be adjusted by adjusting the CD value or the arch height of lens 15. Specifically, when the CD value of lens 15 is the same, the larger the arch height of lens 15, the smaller the radius of curvature; when the arch height of lens 15 is the same, the larger the CD value, the larger the radius of curvature of lens 15.

[0063] According to some embodiments of the present invention, in the direction from the center of the display area to the edge of the display area, the radius of curvature of the lens 15 in each pixel area gradually increases or gradually decreases.

[0064] According to some embodiments of the present invention, reference Figure 13Taking the same tilt angle of the second surface of the medium layer 14 in each pixel area as an example, in the direction from the center of the display area to the edge of the display area, the radius of curvature of the lens 15 in each pixel area gradually increases (the lens arch height in the f1 pixel area and the f2 pixel area is the same, CD1>CD2>CD3>CD4>CD5>CD6). At this time, as the radius of curvature increases, the light deflection angle gradually decreases.

[0065] According to some embodiments of the present invention, reference Figure 14 In the direction from the center to the edge of the display area, the radius of curvature of the lens 15 in each pixel area gradually decreases (the lens arch heights in pixel areas f1 and f2 are the same, CD1 > CD2 > CD3 > CD4 > CD5 > CD6). As the radius of curvature decreases, the light deflection angle gradually increases. Therefore, the lenses 15 corresponding to the red light emitting unit 121, green light emitting unit 122, and blue light emitting unit 123 can have different radii of curvature, improving viewing angle distortion while achieving angle customization.

[0066] According to some embodiments of the present invention, the orthographic projection of the lens 15 corresponding to the light-emitting unit 12 on the substrate 11 does not overlap with the orthographic projection of the adjacent light-emitting unit 12 on the substrate 11. Specifically, when the lens 15 corresponding to different light-emitting units 12 has the same arch height but different CD values, the reference... Figure 13 and Figure 14 The lens 15 corresponding to the red light emitting unit 121 has the largest CD value, while the lens 15 corresponding to the blue light emitting unit 123 has the smallest CD value. The orthographic projection of the lens 15 corresponding to the red light emitting unit 121 onto the substrate 11 does not coincide at all with the orthographic projection of the green light emitting unit 122 onto the substrate 11, or the orthographic projection of the lens 15 corresponding to the red light emitting unit 121 onto the substrate 11 only overlaps at the edges with the orthographic projection of the green light emitting unit 122 onto the substrate 11. This prevents light emitted from the green light emitting unit 122 from entering the lens 15 corresponding to the red light emitting unit 121.

[0067] According to some embodiments of the present invention, the orthographic projection of the lens 15 disposed corresponding to the sub-color filter on the substrate 11 is located within the range of the orthographic projection of the sub-color filter on the substrate 11. Specifically, refer to Figure 15 The red light-emitting unit 121 is correspondingly arranged with the red sub-color filter 131, the green light-emitting unit 122 is correspondingly arranged with the green sub-color filter 132, and the blue light-emitting unit 123 is correspondingly arranged with the blue sub-color filter 133. The orthogonal projection of the lens 15, which is correspondingly arranged with the red sub-color filter 131, onto the substrate 11 is located within the orthogonal projection range of the red sub-color filter 131 onto the substrate 11. Therefore, while improving viewing angle distortion, the display effect is enhanced.

[0068] According to some embodiments of the present invention, the dielectric layer 14 is a planarization layer. That is, the planarization layer includes a first surface near the light-emitting unit 12 and a second surface away from the light-emitting unit 12. The first surface is parallel to the plane containing the substrate 11. Along the direction from the center of the display area to the edge of the display area, the end of the second surface near the center of the display area is inclined towards the side away from the light-emitting unit 12, or the end of the second surface away from the center of the display area is inclined towards the side away from the light-emitting unit 12. This allows for improved angle customization of the display panel 1, deflecting the light emitted by the light-emitting unit 12 to a larger angle according to optical engine requirements, while reducing brightness loss at specific angles.

[0069] According to some embodiments of the present invention, the substrate 11 includes a support surface close to the lens, and the surface of the plurality of lenses 15 in each pixel region that is away from the substrate 11 is at the same maximum vertical distance from the support surface.

[0070] Specifically, referring to reference 15, each pixel region includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. The lenses 15 corresponding to the red light-emitting unit 121, green light-emitting unit 122, and blue light-emitting unit 123 within each pixel region have the same radius of curvature. The vertical distance d between the surface of the lens 15 away from the substrate 11 and the supporting surface is also considered. This reduces the thickness of the display panel 1.

[0071] refer to Figure 16 Each pixel region includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. Along the direction from the center to the edge of the display area, the radius of curvature of the lens 15 corresponding to the red light-emitting unit 121, green light-emitting unit 122, and blue light-emitting unit 123 in each pixel region gradually decreases. The vertical distance d between the surface of the lens 15 away from the substrate 11 and the supporting surface is always the same. This reduces the thickness of the display panel 1.

[0072] refer to Figure 17 Each pixel region includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. Along the direction from the center to the edge of the display area, the radius of curvature of the lens 15 corresponding to the red light-emitting unit 121, green light-emitting unit 122, and blue light-emitting unit 123 in each pixel region gradually increases. The vertical distance d between the surface of the lens 15 away from the substrate 11 and the supporting surface is always the same. This reduces the thickness of the display panel 1.

[0073] According to some embodiments of the present invention, reference Figures 1-18 The display panel 1 may further include an encapsulation layer 17, which is disposed on the side of the light-emitting unit 12 away from the substrate 11. The orthographic projection of the encapsulation layer 17 on the substrate 11 completely covers the orthographic projection of the light-emitting unit 12 on the substrate 11. The color filter layer is disposed on the side of the encapsulation layer 17 away from the light-emitting unit 12.

[0074] According to some embodiments of the present invention, reference Figure 18 The display panel 1 may further include a protective layer 18, which is disposed on the side of the filler layer 16 away from the dielectric layer 14.

[0075] In another aspect of the invention, a display device is provided, comprising the aforementioned display panel 1. Thus, this display device possesses all the features and advantages of the aforementioned display panel 1, which will not be repeated here. In general, it has at least the advantage of being able to meet customized requirements for different viewing angles.

[0076] According to some embodiments of the present invention, the display device may be an AR display device or a VR display device.

[0077] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0079] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A display panel, characterized by, Includes a display area, the display area including: Base; Multiple light-emitting units are spaced apart on one side of the substrate; A dielectric layer is disposed on the side of the light-emitting unit away from the substrate. The dielectric layer includes a first surface close to the light-emitting unit and a second surface away from the light-emitting unit. The first surface is parallel to the plane where the substrate is located. In the direction from the center of the display area to the edge of the display area, the end of the second surface close to the center of the display area is inclined toward the side away from the light-emitting unit, or the end of the second surface away from the center of the display area is inclined toward the side away from the light-emitting unit. Multiple lenses are disposed on the side of the dielectric layer away from the light-emitting unit, and the multiple lenses are disposed in a one-to-one correspondence with the multiple light-emitting units; A filling layer is disposed on the side of the dielectric layer away from the light-emitting unit, the filling layer covers the surface of the lens and the surface of the dielectric layer exposed by the lens, and the refractive index of the filling layer is less than the refractive index of the lens.

2. The display panel according to claim 1, characterized in that, At least some of the orthographic projections of the center of the light-emitting unit onto the substrate and the orthographic projections of the focal point of the lens corresponding to the light-emitting unit onto the substrate do not overlap.

3. The display panel according to claim 1, characterized in that, In the direction from the center of the display area to the edge of the display area, the display area includes a plurality of pixel areas arranged in sequence, and the tilt angle of the second surface portion corresponding to the medium layer in each pixel area is the same.

4. The display panel according to claim 1, characterized in that, In the direction from the center of the display area to the edge of the display area, the display area includes a plurality of pixel areas, and in the direction from the center of the display area to the edge of the display area, the tilt angle of the second surface portion corresponding to the medium layer in each pixel area gradually increases or gradually decreases.

5. The display panel according to claim 3 or 4, characterized in that, The angle between the second surface of the dielectric layer and the horizontal plane is α, and the angle of deflection of the light emitted by the light-emitting unit is β. α and β satisfy the following relationship: Where n1 is the refractive index of the medium layer and n2 is the refractive index of the lens.

6. The display panel according to claim 3 or 4, characterized in that, The orthographic projection of the lens corresponding to the light-emitting unit onto the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit onto the substrate.

7. The display panel according to claim 3 or 4, characterized in that, The pixel area is circular.

8. The display panel according to claim 3 or 4, characterized in that, The display panel further includes a color filter layer, which includes multiple sub-color filters. Each sub-color filter is disposed in a one-to-one correspondence with a multiple light-emitting unit. The orthographic projection of the center of the light-emitting unit on the substrate and the orthographic projection of the center of the sub-color filter disposed in relation to the light-emitting unit on the substrate do not overlap.

9. The display panel according to claim 8, characterized in that, The orthographic projection of the sub-color filter corresponding to the light-emitting unit on the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit on the substrate.

10. The display panel according to claim 3, characterized in that, The radius of curvature of the lens is the same in each pixel region.

11. The display panel according to claim 3, characterized in that, In the direction from the center of the display area to the edge of the display area, the radius of curvature of the lens in each pixel area gradually increases or gradually decreases.

12. The display panel according to claim 10 or 11, characterized in that, The orthographic projection of the lens corresponding to the light-emitting unit onto the substrate does not overlap with the orthographic projection of the adjacent light-emitting unit onto the substrate.

13. The display panel according to claim 8, characterized in that, The orthographic projection of the lens corresponding to the sub-color filter onto the substrate is located within the range of the orthographic projection of the sub-color filter onto the substrate.

14. The display panel according to claim 3 or 4, characterized in that, The substrate includes a support surface near the lens, and the surfaces of the plurality of lenses in each pixel region that are away from the substrate are at the same maximum vertical distance from the support surface.

15. The display panel according to claim 1, characterized in that, The dielectric layer is a planarization layer.

16. A display device, characterized in that, Includes the display panel as described in any one of claims 1-15.

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