Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate and a plurality of light-emitting units. The dielectric layer is arranged on the side, away from the substrate, of the light-emitting unit, the dielectric 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 the plane where the substrate is located, and the second 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, close to the center of the display area, of the second surface inclines towards the side away from the light-emitting unit, or the end, away from the center of the display area, of the second surface inclines towards the side away from the light-emitting unit; a lens and a filling layer. Therefore, the angle customization function of the display panel can be improved, and meanwhile, the brightness loss of a specific angle is reduced.

Description

Technical Field

[0001] The present invention relates to the field of displays, and in particular, to a display panel and a display device. Background Art

[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 shift the lens and color film relative to the center of the light-emitting unit at the same time, so that the lens focus is shifted to a position where the light is converged at a small angle. However, limited by the pixel size and the light-emitting area of the light-emitting unit, the customized angle cannot be further improved, and the brightness loss of the display panel is serious after the lens is shifted. Therefore, the current display panel still needs to be further improved. Summary of the Invention

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

[0004] In one aspect of the present invention, a display panel is provided, including a display area, and the display area includes: 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 a side of the light-emitting unit away from the substrate, the dielectric layer including a first surface close to the light-emitting unit and a second surface away from the light-emitting unit, the first surface being parallel to the plane where the substrate is located, and in a direction from the center of the display area to the edge of the display area, one end of the second surface close to the center of the display area is inclined away from the light-emitting unit, or one end of the second surface away from the center of the display area is inclined away from the light-emitting unit; a plurality of lenses, the lenses being disposed on a side of the dielectric layer away from the light-emitting unit, the plurality of lenses being arranged in one-to-one correspondence with the plurality of light-emitting units; a filling layer, the filling layer being disposed on a side of the dielectric layer away from the light-emitting unit, the filling layer covering the surface of the lens and the surface of the dielectric layer exposed by the lens, and the refractive index of the filling layer being less than the refractive index of the lens. Thus, the angle customization function of the display panel can be improved, the light emitted by the light-emitting unit can be deflected to a larger angle according to the requirements of the optical engine, and the brightness loss at a specific angle can be reduced at the same time.

[0005] According to some embodiments of the present invention, the orthographic projection of the center of at least some of the light-emitting units on the substrate and the orthographic projection of the focus of the lens corresponding to the light-emitting unit on the substrate do not have an overlapping area. Thus, the angle customization of the display panel is further improved, and the light emitted by the light-emitting unit can be deflected to a larger angle according to the requirements of the optical engine.

[0006] 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 arranged in sequence, and the inclination angles of the corresponding second surface portions of the dielectric layer in each pixel area are the same. Thus, the light emitted by each light-emitting unit is deflected at the same angle, and the brightness of the display panel at the same deflection angle can be improved.

[0007] 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 inclination angles of the corresponding second surface portions of the dielectric layer in each pixel area gradually increase or gradually decrease. Thus, the light emitted by a plurality of light-emitting units has 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 deflection angle of the light emitted by the light-emitting unit is β. α and β satisfy the following relationship: where n 1 is the refractive index of the dielectric layer, and n 2 is the refractive index of the lens.

[0009] According to some embodiments of the present invention, the orthographic projection of the lens 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. Thus, it is avoided that the lens covers the adjacent light-emitting units.

[0010] According to some embodiments of the present invention, the pixel area is annular. Thus, the light engine can be better matched, and the visual effect can be improved.

[0011] According to some embodiments of the present invention, the display panel further includes: a color filter layer, the color filter includes a plurality of sub-color filters, and the plurality of sub-color filters are arranged in one-to-one correspondence with the plurality of light-emitting units. 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 corresponding to the light-emitting unit on the substrate do not overlap. Thus, the viewing angle deviation is improved.

[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 curvature radii of the lenses in each pixel area are the same. Thus, the complexity of the process for forming the lenses is reduced.

[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 gradually decreases. Thereby, light beams with different orientations can be provided, reducing the complexity of the optical engine.

[0015] According to some embodiments of the present invention, the orthographic projection of the lens 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 orthographic projection of the lens corresponding to the sub-color film on the substrate is within the range of the orthographic projection of the sub-color film on the substrate.

[0017] According to some embodiments of the present invention, the substrate includes a support surface close to the lens, and the maximum vertical distance between the surfaces of the multiple lenses in each pixel area away from the substrate and the support surface is the same. Thereby, the thickness of the display panel is reduced.

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

[0019] In another aspect of the present invention, a display device is provided, including the aforementioned display panel. Thereby, the display device has all the features and advantages of the aforementioned display panel, which will not be elaborated here. Generally speaking, it has at least the advantage of being able to meet the customization requirements at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 Shows a schematic structural diagram of a display panel according to an embodiment of the present invention.

[0022] Figure 2 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0023] Figure 3 Shows a schematic structural diagram of a display panel in the related art.

[0024] Figure 4 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0025] Figure 5 Shows a schematic diagram of a pixel area according to an embodiment of the present invention.

[0026] Figure 6 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0027] Figure 7 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0028] Figure 8 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0029] Figure 9 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0030] Figure 10 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0031] Figure 11 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0032] Figure 12 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0033] Figure 13 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0034] Figure 14 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0035] Figure 15 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0036] Figure 16 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0037] Figure 17 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0038] Figure 18 Shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

[0039] Reference numerals:

[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: Filling layer; 17: Encapsulation layer; 18: Protective layer. Detailed implementation manners

[0041] Embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. For those technologies or conditions not specified in the embodiments, they shall be carried out according to the technologies or conditions described in the literature in the field or according to the product specifications. For the reagents or instruments not specified for the manufacturer, they are all conventional products that can be obtained through commercial purchase.

[0042] In one aspect of the present invention, a display panel 1 is provided. Referring to Figure 1 and Figure 2 , the display panel 1 includes a substrate 11; a plurality of light-emitting units 12, and the plurality of light-emitting units 12 are arranged at intervals on one side of the substrate 11; a dielectric layer 14, the dielectric layer 14 is arranged on the side of the light-emitting units 12 away from the substrate 11, the dielectric layer 14 includes a first surface close to the light-emitting units 12 and a second surface away from the light-emitting units 12, the first surface is parallel to the plane where the substrate 11 is located, and in the direction from the center of the display area to the edge of the display area, one end of the second surface close to the center of the display area is inclined away from the light-emitting units 12 (refer to Figure 1 ), or one end of the second surface away from the center of the display area is inclined away from the light-emitting units 12 (refer to Figure 2 ); a plurality of lenses 15, the lenses 15 are arranged on the side of the dielectric layer 14 away from the light-emitting units 12, and the plurality of lenses 15 are arranged in one-to-one correspondence with the plurality of light-emitting units 12; a filling layer 16, the filling layer 16 is arranged on the side of the dielectric layer 14 away from the light-emitting units 12, the filling layer 16 covers the surface of the lenses 15 and the surface of the dielectric layer 14 exposed by the lenses 15, and the refractive index of the filling layer 16 is less than the refractive index of the lenses 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, the color filter layer is arranged 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 arranged corresponding to the red light-emitting unit 121, the green sub-color filter 132 is arranged corresponding to the green light-emitting unit 122, and the blue sub-color filter 133 is arranged 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 on the substrate 11 covers the orthographic projection of the light-emitting unit 12 on the substrate 11. The second surface of the dielectric layer 14 is inclined. The inclination mode of the second surface includes: one end of the second surface close to the center of the display area is inclined away from the side of the light-emitting unit 12 (refer to 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 one end of the second surface away from the center of the display area is inclined away from the side of the light-emitting unit 12 (refer to 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] On the side of the dielectric layer 14 away from the substrate 11, there are prisms corresponding to the red light-emitting unit 121, the green light-emitting unit 122, and the blue light-emitting unit 123 respectively. On the side of the dielectric layer 14 away from the substrate 11, there is a filling layer 16. The refractive index of the lens 15 is greater than the refractive index of the filling layer 16. When one end of the second surface away from the center of the display area is inclined away from the side of the light-emitting unit 12, the light emitted by the light-emitting unit 12 is vertically incident into the lens 15 and then deflected in the direction away from the center of the display area (refer to Figure 1 ); when one end of the second surface away from the center of the display area is inclined away from the side of the light-emitting unit 12, the light emitted by the light-emitting unit 12 is vertically incident into the lens 15 and then deflected toward the center of the display area (refer to Figure 2 ). For the specific deflection direction, those skilled in the art can design the inclination mode of the second surface of the dielectric layer 14 according to the requirements of the display device.

[0047] Thus, the angle customization function of the display panel 1 can be improved, the light emitted by the light-emitting unit 12 can be deflected at a larger angle according to the requirements of the optical engine, and at the same time, the brightness loss at the customized angle can be reduced.

[0048] Next, the principle by which the present invention can achieve the above beneficial effects will be described in detail:

[0049] Refer to Figure 3, in order to deflect the light emitted by the light-emitting unit of the display panel 1 in the related art to a small angle, after the lens 15 is translated, part of the light obliquely incident into the lens 15 from the light-emitting unit 12 deflects to a small angle at the interface between the lens 15 and the filling layer 16, realizing the customization function of a small angle to a certain extent. However, limited by the pixel size and the area of the light-emitting unit, after the lens 15 is offset to a certain extent, the deflection angle cannot be further increased. Moreover, since there is a gap between two adjacent lenses 15, part of the light with a positive viewing angle emitted by the light-emitting unit 12 leaks out between the two adjacent lenses 15 after the lens 15 is translated, increasing the brightness loss. In the display panel 1 proposed by the present invention, since the second surface of the dielectric layer 14 far from the substrate 11 is inclined, the orthographic projection of the focus of the lens 15 on the dielectric layer 14 on the substrate 11 is offset relative to the center of the light-emitting unit 12. After the light emitted from the center of the light-emitting unit 12 irradiates the lens 15, it can deflect at a larger angle. Specifically, the inclination angle of the second surface of the dielectric layer 14 can be designed according to the angle requirement of the display device to meet different angle customization. Since the light emitted from the center of the light-emitting unit 12 has the strongest brightness, deflecting the light emitted from the center of the light-emitting unit 12 can reduce the brightness loss.

[0050] According to some embodiments of the present invention, referring to Figure 4 , there is no overlapping area between the orthographic projection of the center of at least part of the light-emitting units 12 on the substrate 11 and the orthographic projection of the focus of the lens 15 corresponding to the light-emitting unit 12 on the substrate 11. Specifically, referring to Figure 4 , a plurality of lenses 15 are arranged in one-to-one correspondence with the 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 inclined, the lenses 15 arranged in one-to-one correspondence with the light-emitting units 12 can be translated as a whole toward the center of the display area, or the lenses 15 arranged in one-to-one correspondence with the light-emitting units 12 can be translated as a whole toward the edge of the display area. Thus, after the light emitted by the light-emitting unit 12 irradiates the lens 15, it can deflect at a larger angle at the interface between the lens 15 and the filling layer 16, thereby realizing the customization function of a larger angle.

[0051] 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 arranged in sequence, and the inclination angles of the corresponding second surface portions of the dielectric layer 14 in each pixel area are the same. Specifically, referring to Figure 5 , in the direction from the center to the edge of the display area, the display panel 1 includes the f1 pixel area, f2 pixel area, f3 pixel area... fz pixel area arranged in sequence, and the inclination angles of the second surfaces of the dielectric layer 14 in each pixel area are the same (refer to Figure 6) Thus, the light emitted by the light-emitting units 12 in different pixel regions can be deflected at the same angle, improving the brightness of the light at a specific viewing angle and enhancing the display effect.

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

[0053] According to some specific embodiments of the present invention, referring to Figure 5 and Figure 7 , in the direction from the center of the display region to the edge of the display region, the display panel 1 includes successively arranged f1 pixel regions, f2 pixel regions, f3 pixel regions... fz pixel regions, and the inclination angle of the corresponding second surface of the dielectric layer 14 in each pixel region gradually increases. Specifically, referring to Figure 7 , in the direction along the center of the display region to the edge of the display region, when one end of the second surface close to the center of the display region inclines away from the light-emitting unit 12, the inclination angle of the second surface in each pixel region gradually increases (α1 > α2); referring to Figure 8 , or in the direction along the center of the display region to the edge of the display region, when one end of the second surface away from the center of the display region inclines away from the light-emitting unit 12, the inclination angle of the second surface in each pixel region gradually increases (α1 > α2). Thus, angle customization with a larger deflection angle can be achieved, meeting 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 region to the edge of the display region, the display panel 1 includes successively arranged f1 pixel regions, f2 pixel regions, f3 pixel regions... fz pixel regions, and the inclination angle of the corresponding second surface of the dielectric layer 14 in each pixel region gradually decreases. Specifically, referring to Figure 9 , in the direction along the center of the display region to the edge of the display region, when one end of the second surface close to the center of the display region inclines away from the light-emitting unit 12, the inclination angle of the second surface in each pixel region gradually decreases (α1 > α2); referring to Figure 10 , or in the direction along the center of the display region to the edge of the display region, when one end of the second surface away from the center of the display region inclines away from the light-emitting unit 12, the inclination angle of the second surface in each pixel region gradually decreases (α1 > α2). Thus, the angle customization function for a larger angle can be improved, meeting the visual requirements of the optical engine.

[0055] 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 panel 1 includes an f1 pixel area, an f2 pixel area, an f3 pixel area... an fz pixel area arranged in sequence, and the inclination angles of the corresponding second surfaces of the dielectric layer 14 in each pixel area may also be arranged irregularly. Specifically, the inclination manner of the second surface of the dielectric 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, referring to Figure 2 , the included angle between the second surface of the dielectric layer 14 and the horizontal plane is α, and the deflection angle of the light emitted by the light-emitting unit 12 is β. α and β satisfy the following relationship: Wherein, n 1 is the refractive index of the dielectric layer 14, and n 2 is the refractive index of the lens 15. Thus, the inclination angle of the second surface can be designed according to the angle requirements of the optical engine.

[0057] According to some embodiments of the present invention, the positive projection of the lens 15 corresponding to the light-emitting unit 12 on the substrate 11 does not overlap with the positive projection of the adjacent light-emitting unit 12 on the substrate 11. Specifically, referring to Figure 2 , after the lens 15 is translated, the positive projection of the lens 15 corresponding to the red light-emitting unit 121 on the substrate 11 does not coincide with the positive projection of the green light-emitting unit 122 on the substrate 11 at all, or the positive projection of the lens 15 corresponding to the red light-emitting unit 121 on the substrate 11 is tangent to the edge of the positive projection of the green light-emitting unit 122 on the substrate 11. Thus, different colors of light are prevented from irradiating 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 area is circular. Referring to Figure 5 , in the direction from the center of the display area to the edge of the display area, the display panel 1 includes an f1 pixel area, an f2 pixel area, an f3 pixel area... an fz pixel area arranged in sequence, and each pixel area is circular. Thus, it can better match the viewing mode of the human eye and improve 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 includes a plurality of sub-color filters, and the plurality of sub-color filters are arranged in one-to-one correspondence with the plurality of light-emitting units 12. The positive projection of the center of the light-emitting unit 12 on the substrate 11 and the positive projection of the center of the sub-color filter corresponding to the light-emitting unit 12 on the substrate 11 do not overlap. Specifically, referring to Figures 6 - 11, a pixel region 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 may further translate the color filter, thereby achieving a greater angle customization while improving the viewing angle color shift 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, referring to Figure 11 , after translating the color filter layer, the orthographic projection of the red sub-color filter 131 on the substrate 11 does not overlap with the orthographic projection of the adjacent green light-emitting unit 122 on the substrate 11. Thus, it is avoided that the red sub-color filter 131 corresponding to the red light-emitting unit 121 covers the green light-emitting unit 122, improving the viewing angle color shift and enhancing the display effect.

[0061] According to some embodiments of the present invention, the radius of curvature of the lens 15 in each pixel region is the same. Specifically, referring to Figure 5 and Figure 12 , in the direction from the center of the display area to the edge of the display area, one end of the second surface close to 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 on the substrate 11 and the orthographic projection of the center of the sub-color filter corresponding to the light-emitting unit 12 on the substrate 11 do not overlap. The display panel 1 includes sequentially arranged f1 pixel regions, f2 pixel regions, f3 pixel regions... fz pixel regions. Taking the f1 pixel region and the f2 pixel region as an example, in the direction from the center of the display area to the edge of the display area, the radii of curvature of multiple lenses are the same. Thus, on the basis of realizing the angle customization function and improving the viewing angle color shift, the complexity of the process for manufacturing the lens 15 is reduced, and the process cost is lowered.

[0062] It should be noted that the radius of curvature of the lens 15 can be adjusted by adjusting the CD value of the lens 15 or the arch height of the lens 15. Specifically, when the CD values of the lens 15 are the same, the greater the arch height of the lens 15, the smaller the radius of curvature; when the arch heights of the lens 15 are the same, the greater the CD value, the greater the radius of curvature of the 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 region gradually increases or gradually decreases.

[0064] According to some embodiments of the present invention, referring to Figure 13, taking the example that the inclination angles of the second surfaces of the medium layer 14 in each pixel region are the same, in the direction from the center of the display region to the edge of the display region, the radius of curvature of the lens 15 in each pixel region gradually increases (the lens arch heights in the f1 pixel region and the f2 pixel region are the same, CD1 > CD2 > CD3 > CD4 > CD5 > CD6). At this time, as the radius of curvature increases, the deflection angle of light gradually decreases.

[0065] According to some embodiments of the present invention, referring to Figure 14 , in the direction from the center of the display region to the edge of the display region, the radius of curvature of the lens 15 in each pixel region gradually decreases (the lens arch heights in the f1 pixel region and the f2 pixel region are the same, CD1 > CD2 > CD3 > CD4 > CD5 > CD6). At this time, as the radius of curvature decreases, the deflection angle of light gradually increases. Thus, the lenses 15 corresponding to the red light emitting unit 121, the green light emitting unit 122, and the blue light emitting unit 123 can have different radii of curvature, and on the basis of realizing the angle customization function, the viewing angle color shift is improved.

[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 have an overlapping region with the orthographic projection of the adjacent light emitting unit 12 on the substrate 11. Specifically, when the lens arch heights of the lenses 15 corresponding to different light emitting units 12 are the same and the CD values are different, referring to Figure 13 and Figure 14 , the CD value of the lens 15 corresponding to the red light emitting unit 121 is the largest, the CD value of the lens 15 corresponding to the blue light emitting unit 123 is the smallest, the orthographic projection of the lens 15 corresponding to the red light emitting unit 121 on the substrate 11 does not completely overlap with the orthographic projection of the green light emitting unit 122 on the substrate 11, or the orthographic projection of the lens 15 corresponding to the red light emitting unit 121 on the substrate 11 only overlaps at the edge with the orthographic projection of the green light emitting unit 122 on the substrate 11. Thus, the light emitted by the green light emitting unit 122 is prevented 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 corresponding to the sub-color film on the substrate 11 is within the range of the orthographic projection of the sub-color film on the substrate 11. Specifically, referring to Figure 15 , the red light emitting unit 121 is correspondingly arranged with the red sub-color film 131, the green light emitting unit 122 is correspondingly arranged with the green sub-color film 132, the blue light emitting unit 123 is correspondingly arranged with the blue sub-color film 133, and the orthographic projection of the lens 15 corresponding to the red sub-color film 131 on the substrate 11 is within the range of the orthographic projection of the red sub-color film 131 on the substrate 11. Thus, while improving the viewing angle color shift, the display effect is improved.

[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 close to the light-emitting unit 12 and a second surface far from the light-emitting unit 12. The first surface is parallel to the plane where the substrate 11 is located. In the direction from the center of the display area to the edge of the display area, one end of the second surface close to the center of the display area is inclined away from the light-emitting unit 12, or one end of the second surface far from the center of the display area is inclined away from the light-emitting unit 12. Thereby, the angle customization of the display panel 1 can be improved, the light emitted by the light-emitting unit 12 can be deflected at a larger angle according to the requirements of the optical engine, and at the same time, the brightness loss at a specific angle can be reduced.

[0069] According to some embodiments of the present invention, the substrate 11 includes a supporting surface close to the lens. The maximum vertical distance between the surfaces of the plurality of lenses 15 in each pixel area far from the substrate 11 and the supporting surface is the same.

[0070] Specifically, referring to FIG. 15, each pixel area includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. The curvature radii of the lenses 15 corresponding to the red light-emitting unit 121, the green light-emitting unit 122, and the blue light-emitting unit 123 in each pixel area are the same, and the vertical distance between the surface of the lens 15 far from the substrate 11 and the supporting surface is d. Thereby, the thickness of the display panel 1 is reduced.

[0071] Referring to Figure 16 , each pixel area includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. In the direction from the center of the display area to the edge of the display area, the curvature radii of the lenses 15 corresponding to the red light-emitting unit 121, the green light-emitting unit 122, and the blue light-emitting unit 123 in each pixel area gradually decrease, and the vertical distance between the surface of the lens 15 far from the substrate 11 and the supporting surface is d. Thereby, the thickness of the display panel 1 is reduced.

[0072] Referring to Figure 17 , each pixel area includes a red light-emitting unit 121, a green light-emitting unit 122, and a blue light-emitting unit 123. In the direction from the center of the display area to the edge of the display area, the curvature radii of the lenses 15 corresponding to the red light-emitting unit 121, the green light-emitting unit 122, and the blue light-emitting unit 123 in each pixel area gradually increase, and the vertical distance between the surface of the lens 15 far from the substrate 11 and the supporting surface is d. Thereby, the thickness of the display panel 1 is reduced.

[0073] According to some embodiments of the present invention, referring toFigures 1 - 18 Further, the display panel 1 may further include a packaging layer 17 disposed on a side of the light-emitting unit 12 away from the substrate 11. A front projection of the packaging layer 17 on the substrate 11 completely covers a front projection of the light-emitting unit 12 on the substrate 11. The color filter layer is disposed on a side of the packaging layer 17 away from the light-emitting unit 12.

[0074] According to some embodiments of the present invention, with reference to Figure 18 Further, the display panel 1 may further include a protection layer 18 disposed on a side of the filling layer 16 away from the dielectric layer 14.

[0075] In another aspect of the present invention, a display device is provided, including the aforementioned display panel 1. Thus, the display device has all the features and advantages of the aforementioned display panel 1, which will not be elaborated herein. Generally speaking, it at least has the advantage of being able to meet the customization requirements at different 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 the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0078] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0079] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0081] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0082] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill 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, It is characterized in that Comprising a display area, the display area comprising: substrate; A plurality of light-emitting units, wherein the plurality of light-emitting units are arranged at intervals on one side of the substrate; a dielectric layer, the dielectric layer being arranged on a side of the light-emitting unit away from the substrate, the dielectric layer comprising a first surface close to the light-emitting unit and a second surface away from the light-emitting unit, the first surface being parallel to the plane where the substrate is located, and in a direction from the center of the display area to the edge of the display area, an end of the second surface close to the center of the display area is inclined toward a side away from the light-emitting unit, or an end of the second surface away from the center of the display area is inclined toward a side away from the light-emitting unit; A plurality of lenses, wherein the lenses are arranged on a side of the dielectric layer away from the light-emitting unit, and the plurality of lenses are arranged in one-to-one correspondence with the plurality of light-emitting units; A filling layer is arranged on a 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 smaller than the refractive index of the lens.

2. The display panel according to claim 1, It is characterized in that There is no overlapping area between the orthographic projection of the center of at least part of the light-emitting units on the substrate and the orthographic projection of the focus of the lens arranged corresponding to the light-emitting unit on the substrate.

3. The display panel according to claim 1, It is characterized in that In a 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 inclination angle of the second surface portion corresponding to the dielectric layer in each pixel area is the same.

4. The display panel according to claim 1, It is 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 inclination angle of the second surface portion corresponding to the dielectric layer in each pixel area gradually increases or decreases.

5. The display panel according to claim 3 or 4, It is characterized in that The angle between the second surface of the dielectric layer and the horizontal plane is α, the angle of deflection of the light emitted by the light-emitting unit is β, and α and β satisfy the following relationship: Among them, n 1 is the refractive index of the dielectric layer, n 2 is the refractive index of the lens.

6. The display panel according to claim 3 or 4, It is characterized in that There is no overlapping area between the orthographic projection of the lens corresponding to the light emitting unit on the substrate and the orthographic projection of the adjacent light emitting unit on the substrate.

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

8. The display panel according to claim 3 or 4, It is characterized in that The display panel also includes: a color film layer, the color film includes a plurality of sub-color films, the plurality of sub-color films are arranged in one-to-one correspondence with the plurality of light-emitting units, and 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 film arranged corresponding to the light-emitting unit on the substrate do not have an overlapping area.

9. The display panel according to claim 8, It is characterized in that There is no overlapping area between the orthographic projection of the sub-color film arranged corresponding to the light-emitting unit on the substrate and the orthographic projection of the adjacent light-emitting unit on the substrate.

10. The display panel according to claim 2, It is characterized in that The curvature radius of the lens in each pixel area is the same.

11. The display panel according to claim 2, It is characterized in that In a direction from the center of the display area to the edge of the display area, the curvature radius of the lens in each pixel area gradually increases or decreases.

12. The display panel according to claim 10 or 11, It is characterized in that There is no overlapping area between the orthographic projection of the lens corresponding to the light emitting unit on the substrate and the orthographic projection of the adjacent light emitting unit on the substrate.

13. The display panel according to claim 12, It is characterized in that The orthographic projection of the lens corresponding to the sub-color filter on the substrate is located within the range of the orthographic projection of the sub-color filter on the substrate.

14. The display panel according to claim 1, It is characterized in that The substrate comprises a supporting surface close to the lens, and the maximum vertical distance between the surfaces of the plurality of lenses in each pixel region away from the substrate and the supporting surface is the same.

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

16. A display device, It is characterized in that A display panel comprising any one of claims 1-15.

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