Display panel and display device

Abstract

The application relates to a display panel and a display device, comprising a display light incident surface and a display light emitting surface, and the display panel comprises a substrate, a display function layer, a shielding layer and a light filtering unit. The display function layer is located on the substrate. The display function layer comprises a plurality of light emitting elements. The shielding layer is arranged on the side of the display function layer facing the display light emitting surface. The shielding layer comprises a plurality of openings and a barrier structure distributed around the openings, and the openings expose the light emitting elements. The thickness of the barrier structure between two adjacent openings presents a tapering trend from the display light incident surface to the display light emitting surface. The light filtering unit is arranged on the display function layer and corresponds to each opening. The embodiment of the application can effectively improve the color deviation phenomenon and reduce the reflectivity of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] With the development of display technology, existing display devices are gradually moving towards wider viewing angles. However, wide-viewing-angle display devices often suffer from color shift at large viewing angles. For example, the microcavity effect in organic light-emitting diode (OLED) displays causes the brightness of the electroluminescence spectrum to decrease with increasing viewing angle, and the brightness of different color sub-pixels decreases at different rates. This results in different light intensities of different color sub-pixels at wide viewing angles, leading to color shift at large viewing angles.

[0003] Therefore, a new display panel is urgently needed. Summary of the Invention

[0004] The display panel and display device provided in this application embodiment can effectively improve color deviation and enhance the display effect of the display panel.

[0005] On one hand, according to an embodiment of this application, a display panel is provided, including a light incident surface and a light emitting surface. The display panel includes: a substrate; a display functional layer located on the substrate, the display functional layer including a plurality of light-emitting elements; a shielding layer disposed on the side of the display functional layer facing the light emitting surface, the shielding layer including a plurality of openings and barrier structures distributed around the openings, the openings exposing the light-emitting elements, and the thickness of the barrier structures between two adjacent openings gradually decreasing from the light incident surface to the light emitting surface; and a light filtering unit disposed on the display functional layer corresponding to each opening.

[0006] On the other hand, embodiments of this application also provide a display device, including the display panel as described above.

[0007] According to the display panel and display device provided in this application, by setting the shape of the shielding layer to be tapered, and the size of the opening of the shielding layer is constant, the larger the angle between the side of the tapered shielding layer and the opening, the larger the exit angle of the light emitted from the opening; conversely, the smaller the angle, the smaller the exit angle of the light emitted from the opening. This results in a larger total output of longer wavelength light and a smaller total output of shorter wavelength light. When a user views the display panel at a wide viewing angle, because longer wavelength light attenuates faster and shorter wavelength light attenuates slower, the total amount of light of different wavelengths can be closer, that is, the brightness of different wavelengths of light is closer, thereby reducing the occurrence of color shift. Attached Figure Description

[0008] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0009] Figure 1 A top view of a display panel provided for some embodiments of this application;

[0010] Figure 2 for Figure 1 Enlarged diagram of Q;

[0011] Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure of AA;

[0012] Figure 4 for Figure 2 Another cross-sectional structural diagram of AA;

[0013] Figure 5 for Figure 2 Another cross-sectional structural diagram of AA;

[0014] Figure 6 for Figure 2 Another cross-sectional structural diagram of AA;

[0015] Figure 7 for Figure 2 Another cross-sectional structural diagram of AA;

[0016] Figure 8 for Figure 1 Another enlarged schematic diagram of Q.

[0017] Marker explanation:

[0018] 1. Display panel; S1, Display light incident surface; S2, Display light emitting surface; E1, First zone; E2, Second zone;

[0019] 10. Substrate;

[0020] 20. Display function layer; 21. Light-emitting element; 211. Driving circuit; 212. Sub-pixel; 213. Pixel definition layer; 22. Thin film encapsulation layer; 23. Touch layer;

[0021] 30. Shielding layer; 31. Opening; 32. Retaining wall structure; 321. Side wall; α. Minimum included angle; 322. First sub-retaining wall structure; 322a. First surface; 322b. Second surface; 323. Second sub-retaining wall structure; 324. Third sub-retaining wall structure; 325. Top surface; 325a. Sub-surface;

[0022] 40. Filter unit; 41. First sub-filter unit; 42. Second sub-filter unit; 43. Third sub-filter unit;

[0023] X: Display panel thickness direction; Y: First direction; Z: Second direction.

[0024] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application and not to limit it. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating examples.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0027] In existing technologies, conventional Organic Electroluminescence Display (OLED) panels are composed of a polyimide (PI) layer, an array substrate layer, an OLED layer, a thin-film encapsulation (TFE) layer, a touch (TPOT) layer, a polarizing (POL) layer, and a cover layer stacked sequentially. The POL layer is relatively rigid and difficult to bend, hindering the development and application of flexible screen technology. Therefore, CFOT (Color Filter On TFE) technology was developed. Display panels using CFOT technology replace the POL layer with a color filter (CFOT) layer. By filtering the light emitted from the OLED layer through color blocking, the inflexible POL layer can be eliminated, resulting in relatively pure sub-pixel light. This not only makes the display panel more flexible but also reduces the overall thickness of the display panel because the CFOT layer is much thinner than the POL layer.

[0028] However, display panels using CFOT technology still have drawbacks. Because the emitted light is blocked by the shielding layer in the CFOT layer, the viewing angle of the display panel is limited.

[0029] Therefore, in order to solve the above problems, this application proposes a display panel and a display device.

[0030] To better understand this application, on the one hand, the following will combine... Figures 1 to 8 The embodiments described herein will be described in detail.

[0031] Figure 1 This is a top view of a display panel provided in some embodiments of this application. Figure 2 for Figure 1 A magnified diagram of Q. Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure of AA.

[0032] like Figures 1 to 3 As shown, this application embodiment provides a display panel 1, including a light incident surface S1 and a light emitting surface S2. The display panel 1 includes a substrate 10, a display functional layer 20, a shielding layer 30, and a filter unit 40. The display functional layer 20 is located on the substrate 10. The display functional layer 20 includes a plurality of light-emitting elements 21. The shielding layer 30 is disposed on the side of the display functional layer 20 facing the light emitting surface S2. The shielding layer 30 includes a plurality of openings 31 and barrier structures 32 distributed around the openings 31, with the openings 31 exposing the light-emitting elements 21. The thickness of the barrier structure 32 between two adjacent openings 31 gradually decreases from the light incident surface S1 to the light emitting surface S2. The filter unit 40 is disposed on the display functional layer 20 corresponding to each opening 31.

[0033] The figure only shows a portion of the film structure of the display panel 1 in this embodiment. Any film layer that does not affect the functionality of this embodiment can be added. Figure 3 The upper surface of the display panel 1, the lower surface of the display panel 1, or the film layer structure of the display panel 1 shown.

[0034] Optionally, the light-emitting element 21 can be an OLED light-emitting element 21, a Mini LED light-emitting element 21, or a Micro LED light-emitting element 21. This application does not limit the specific type of the light-emitting element 21. Taking an OLED light-emitting element 21 as an example, the light-emitting element 21 includes a driving circuit 211, a plurality of sub-pixels 212, and a pixel definition layer 213. The sub-pixels 212 are arranged in an array in the display area, the pixel definition layer 213 is disposed in the area surrounding the sub-pixels 212, the driving circuit 211 drives the sub-pixels 212, and the sub-pixels 212 can emit light of a specific color.

[0035] In some optional embodiments of this application, the filter unit 40 is correspondingly arranged with the light-emitting element 21, and the color of the light transmitted by the filter unit 40 is the same as the color of the light emitted by the light-emitting element 21. For example, a red filter unit is correspondingly arranged with a red light-emitting element 21; a green filter unit is correspondingly arranged with a green light-emitting element 21; and a blue filter unit is correspondingly arranged with a blue light-emitting element 21. Taking the red light-emitting element 21 as an example, after the red light emitted by the red light-emitting element 21 passes through the red filter unit, due to the filtering effect of the red filter unit, light that deviates significantly from the red light spectrum can be filtered out, thereby increasing the purity of the red light passing through the red filter unit. In some other optional embodiments of this application, the light-emitting element 21 is a monochromatic light source, that is, the light-emitting element 21 emits only one color of light, and the filter unit 40 includes a red filter unit, a green filter unit, and a blue filter unit.

[0036] In some optional embodiments of this application, the shielding layer 30 is disposed around the filter unit 40, and the barrier structure 32 in the shielding layer 30 encloses and forms a plurality of openings 31, in which the filter unit 40 is disposed. In other optional embodiments of this application, the shielding layer 30 is located above the filter unit 40, and the plurality of openings 31 formed by the barrier structure 32 are correspondingly disposed with respect to the filter unit 40.

[0037] As some optional embodiments, the thickness of the barrier structure 32 between two adjacent openings 31 gradually decreases from the light incident surface S1 to the light emitting surface S2. That is, the cross-sectional shape of the barrier structure 32 includes triangles, trapezoids, and polygons with sides approaching each other along the direction from the light incident surface S1 to the light emitting surface S2. It is understood that with the gradually decreasing thickness of the barrier structure 32, when external incident light shines on the sidewall 321 of the barrier structure 32, the sidewall 321 can also diffusely reflect the external incident light, thereby reducing the reflectivity.

[0038] In one embodiment of this application, the shape of the shielding layer 30 in the display panel 1 and display device is set to be tapered, and the size of the opening 31 of the shielding layer 30 is fixed. The larger the angle between the side of the tapered shielding layer 30 and the opening 31, the larger the exit angle of the light emitted from the opening 31; conversely, the smaller the angle, the smaller the exit angle of the light emitted from the opening 31. This results in a larger total output of longer wavelength light and a smaller total output of shorter wavelength light. When a user views the display panel 1 at a wide viewing angle, the longer wavelength light attenuates faster, while the shorter wavelength light attenuates slower, making the total amount of light of different wavelengths more similar, i.e., the brightness of different wavelengths of light is more similar, thereby reducing color shift. Furthermore, the periphery of the shielding structure is tapered, so when external light shines on the shielding structure 40, the external light undergoes diffuse reflection, preventing specular reflection after the external light shines on the display panel 1 and reducing the reflectivity of the display panel 1.

[0039] Figure 4 for Figure 2 Another cross-sectional structural diagram of AA.

[0040] like Figure 2 and Figure 4 As shown, in some optional embodiments of this application, the retaining wall structure 32 includes a plurality of sidewalls 321 that enclose and form an opening 31, at least some of the sidewalls 321 having different slopes relative to the substrate 10.

[0041] As some optional embodiments, the slope of the sidewall 321 that surrounds and forms the opening 31 is correspondingly set to the filter unit 40. Different colored filter units 40 can transmit light, and the slope of the sidewall 321 corresponding to them forming the opening 31 is different. At least some of the red filter units have a different slope than the green filter units. At least some of the red filter units have a different slope than the blue filter units. At least some of the green filter units have a different slope than the blue filter units.

[0042] In some optional embodiments of this application, the slope of the sidewalls 321 surrounding a color filter unit 40 may be the same. In other optional embodiments of this application, the slope of the sidewalls 321 surrounding a color filter unit 40 may be different.

[0043] It is understandable that "different slopes" and "different slopes" both refer to the slope of the sidewall 321 with the same slope being greater than the slope of the sidewall 321 with a different slope; or the slope of the sidewall 321 with the same slope being less than the slope of the sidewall 321 with a different slope.

[0044] It should be noted that the slope of the sidewall 321 is relative to the substrate 10. The larger the slope of the sidewall 321, the larger the minimum angle α between the sidewall 321 and the substrate 10, and the smaller the light emission angle of the filter unit 40. Conversely, the smaller the slope of the sidewall 321, the smaller the minimum angle α between the sidewall 321 and the substrate 10, and the larger the light emission angle of the filter unit 40.

[0045] Please continue to refer to Figure 2 and Figure 4 In some optional embodiments of this application, the filter unit 40 includes two or more sub-filter units of different colors, and the slopes of at least a portion of the sidewalls 321 of the barrier structure 32 corresponding to at least one sub-filter unit of a different color are different.

[0046] As some optional embodiments, taking a red filter unit as an example, the red filter unit is surrounded by at least four sidewalls 321, and the slopes of these four sidewalls 321 can all be different; the slopes of three of the four sidewalls 321 can be the same, and the slope of the third sidewall 321 is different from the slopes of the three sidewalls 321; the slopes of two of the four sidewalls 321 can be the same, and the slopes of the other two sidewalls 321 can be different from the slopes of the two sidewalls 321; the slopes of the other two sidewalls 321 can be the same or different from each other.

[0047] In this embodiment of the application, in the display panel 1 with a wide viewing angle, the pixels near the edge need to emit directional light. The sidewalls 321 of the barrier wall around the filter unit 40 of a certain color are adjusted to different slopes so that the pixels can emit light in a predetermined direction, thereby obtaining a better display effect.

[0048] Figure 5 for Figure 2 Another cross-sectional structural diagram of AA

[0049] like Figure 2 and Figure 5As shown, in some optional embodiments of this application, the filter unit 40 includes a first sub-filter unit 41, a second sub-filter unit 42, and a third sub-filter unit 43, each with a different color. The barrier structure 32 includes a first sub-barrier structure 322, a second sub-barrier structure 323, and a third sub-barrier structure 324. The first sub-barrier structure 322 is disposed between adjacent first sub-filter units 41 and second sub-filter units 42. The second sub-barrier structure 323 is disposed between adjacent second sub-filter units 42 and third sub-filter units 43. The third sub-barrier structure 324 is disposed between adjacent first sub-filter units 41 and third sub-filter units 43. The slope of the sidewall 321 of any one of the first sub-barrier structure 322, second sub-barrier structure 323, and third sub-barrier structure 324 matches the slope of the sub-filter unit adjacent to that sidewall 321.

[0050] As some optional embodiments, the filter units 40 in the display panel 1 are arranged in an array in the display area. Taking the color arrangement order of the first sub-filter unit 41, the second sub-filter unit 42 and the third sub-filter unit 43 as red, green and blue as an example, the filter units 40 are arranged in red, green and blue in a column and in red, green and blue in a row.

[0051] In some optional embodiments of this application, the filter units 40 in the display panel 1 are arranged in an array in the display area, and the first sub-filter unit 41, the second sub-filter unit 42, and the third sub-filter unit 43 are arranged repeatedly in the display area as a pixel. On the two opposite sides of the first sub-filter unit 41 along the first direction Y, one side is the third sub-barrier structure 324 and the other side is the first sub-barrier structure 322; on the two opposite sides of the second sub-filter unit 42 along the first direction Y, one side is the first sub-barrier structure 322 and the other side is the second sub-barrier structure 323; on the two opposite sides of the third sub-filter unit 43 along the first direction Y, one side is the second sub-barrier structure 323 and the other side is the third sub-barrier structure 324.

[0052] Taking the two opposite sides of the first sub-filter unit 41 along the first direction Y as an example, the slope of the sidewall 321 of the first sub-barrier structure 322 and the third sub-barrier structure 324 facing the first sub-filter unit 41 is adjusted according to the light emission angle required by the first sub-filter unit 41.

[0053] It is understandable that the barrier structures 32 on both sides of the first sub-filter unit 41 along the second direction Z can also adjust the slope of the sidewalls 321 of the barrier structures 32 toward the first sub-filter unit 41 according to the required light emission angle of the first sub-filter unit 41.

[0054] In this embodiment, the slope of the sidewall 321 surrounding the filter unit 40 is adjusted according to the different colored filter units to obtain the required light emission angle and further improve the display effect.

[0055] Please continue to refer to Figure 2 and Figure 5 In some optional embodiments of this application, the slope of the sidewall 321 of the first sub-barrier structure 322 facing the first sub-filter unit 41 is different from the slope of the sidewall 321 of the first sub-barrier structure 322 facing the second sub-filter unit 42; and / or, the slope of the sidewall 321 of the second sub-barrier structure 323 facing the second sub-filter unit 42 is different from the slope of the sidewall 321 of the second sub-barrier structure 323 facing the third sub-filter unit 43; and / or, the slope of the sidewall 321 of the third sub-barrier structure 324 facing the first sub-filter unit 41 is different from the slope of the sidewall 321 of the third sub-barrier structure 324 facing the third sub-filter unit 43.

[0056] As some optional embodiments, the sidewall 321 of the first sub-barrier structure 322 facing the first sub-filter unit 41 is a first surface 322a, and the sidewall 321 of the first sub-barrier structure 322 facing the second sub-filter unit 42 is a second surface 322b. The slope of the first surface 322a relative to the substrate 10 can be greater than the slope of the second surface 322b relative to the substrate 10; the slope of the first surface 322a relative to the substrate 10 can be less than the slope of the second surface 322b relative to the substrate 10. This allows the slope between the first surface 322a and the second surface 322b to be adjusted according to different colored filter units 40, thereby regulating the light emission effect of the filter unit 40. Furthermore, surfaces with different slopes can also cause diffuse reflection of incident light, reducing reflectivity.

[0057] Similarly, the arrangement of the sidewalls 321 of the second sub-retaining wall structure 323 and the third sub-retaining wall structure 324 can refer to the arrangement of the sidewalls 321 of the first sub-retaining wall structure 322. It is understood that the slope of the sidewalls 321 of the second sub-retaining wall structure 323 can be the same as or different from the slope of the sidewalls 321 of the first sub-retaining wall structure 322. The slope of the sidewalls 321 of the third sub-retaining wall structure 324 can be the same as or different from the slope of the sidewalls 321 of the first sub-retaining wall structure 322. The slope of the sidewalls 321 of the second sub-retaining wall structure 323 can be the same as or different from the slope of the sidewalls 321 of the third sub-retaining wall structure 324.

[0058] In this embodiment, the light efficiency is determined by adjusting the slope of the sidewall 321 of the sub-barrier structure according to the different colored filter units 40.

[0059] In some optional embodiments of this application, the color of the filter unit 40 is the same as the color of the corresponding light-emitting element 21.

[0060] In this embodiment, a red filter unit is correspondingly configured with a red light-emitting element 21; a green filter unit is correspondingly configured with a green light-emitting element 21; and a blue filter unit is correspondingly configured with a blue light-emitting element 21. Since the filter unit 40 of the corresponding color can filter out light that deviates significantly from the spectrum of that color, the purity of the light emitted by the filter unit 40 of that color is improved, thereby enhancing the display effect.

[0061] Figure 6 for Figure 2 Another cross-sectional structural diagram of AA.

[0062] like Figure 2 and Figure 6 As shown, in some optional embodiments of this application, at least part of the retaining wall structure has a different vertical distance from the display functional layer 20 on the side facing away from the display functional layer 20.

[0063] As some optional embodiments, the vertical distance between one side of the retaining wall structure 32 facing away from the display functional layer 20 and the display functional layer 20 is different from the vertical distance between the other side of the retaining wall structure 32 facing away from the display functional layer 20 and the display functional layer 20. In other optional embodiments, the vertical distance between any two sides of the retaining wall structure 32 facing away from the display functional layer 20 and the display functional layer 20 is different.

[0064] For example, the vertical distance between a portion of the retaining wall structure 32 and the display function layer 20 on the side facing away from the display function layer 20 is greater than the vertical distance between the other portion of the retaining wall structure 32 and the display function layer 20 on the side facing away from the display function layer 20; the vertical distance between a portion of the retaining wall structure 32 and the display function layer 20 on the side facing away from the display function layer 20 is less than the vertical distance between the other portion of the retaining wall structure 32 and the display function layer 20 on the side facing away from the display function layer 20.

[0065] It should be noted that the greater the vertical distance between the side of the barrier structure 32 facing away from the display functional layer 20 and the display functional layer 20, the better the light-blocking effect of the barrier structure 32; the smaller the vertical distance between the side of the barrier structure 32 facing away from the display functional layer 20 and the display functional layer 20, the greater the light-emitting angle of the barrier structure 32.

[0066] Please continue to refer to Figure 2 and Figure 6In some optional embodiments of this application, any two barrier structures 32 are spaced apart along the thickness direction X of the display panel 1 on the side facing away from the substrate 10. That is, the side of one barrier structure 32 facing away from the substrate 10 and the side of another barrier structure 32 facing away from the substrate 10 are spaced apart along the thickness direction X of the display panel 1. In other words, there is a thickness difference between the two barrier structures 32.

[0067] It should be noted that the thickness of the barrier structure 32 surrounding the filter unit 40 can be matched to the different colors of the filter unit 40. For example, the thickness of the barrier structure 32 around the red filter unit is greater than the thickness of the barrier structure 32 around the green filter unit; the thickness of the barrier structure 32 around the red filter unit is less than the thickness of the barrier structure 32 around the green filter unit.

[0068] Furthermore, for display panels 1 of different sizes, the thickness of the barrier structure 32 surrounding the filter unit 40 of the same color is adjusted according to its different position in the display panel 1. For example, in a large-size display panel 1, the thickness of the barrier structure 32 surrounding the red filter unit near the center of the display panel 1 is less than the thickness of the barrier structure 32 surrounding the red filter unit at the edge of the display panel 1.

[0069] In this embodiment, the thickness of the surrounding barrier structure 32 is adjusted according to different colors or different positions of the filter unit 40, thereby changing the light emission angle, ensuring the uniformity of the emitted light color, and further improving the color deviation problem.

[0070] Figure 7 for Figure 2 Another cross-sectional structural diagram of AA.

[0071] like Figure 2 and Figure 7 As shown, in some optional embodiments of this application, at least part of the retaining wall structure 32 includes a top surface 325 and a sub-surface 325a located on the top surface 325. The sub-surface 325a is adjustable within the top surface 325. The sub-surface 325a of the retaining wall structure 32 between two adjacent openings 31 is inclined relative to the substrate 10.

[0072] As some alternative embodiments, the side of the retaining wall structure 32 facing away from the substrate 10 includes a top surface 325, in which a sub-surface 325a is inclined relative to the substrate 10; in other words, a portion of the surface of the top surface 325 is inclined. In other alternative embodiments, the top surface 325 as a whole may also be inclined relative to the substrate 10. In other alternative embodiments, the surfaces of the top surface 325 other than the sub-surface 325a may also be parallel to the substrate 10.

[0073] In this embodiment, the top surface 325 of the retaining wall structure 32 is inclined so that the incident light from the outside shines on the top surface 325 and undergoes diffuse reflection, further reducing the reflectivity and improving the display effect.

[0074] Please continue to refer to Figure 2 and Figure 7 In some optional embodiments of this application, the top surface 325 of the barrier structure 32 between two adjacent openings 31 protrudes towards the light emitting surface S2. In other words, the top surface 325 of the barrier structure 32 can be hemispherical or semi-arc-shaped so that incident light from the outside will undergo diffuse reflection on the top surface 325, further reducing the reflectivity and improving the display effect.

[0075] Figure 8 for Figure 1 Another enlarged schematic diagram of Q.

[0076] like Figure 7 and Figure 8 As shown, in some optional embodiments of this application, the display panel 1 includes a first area E1 and a second area E2 disposed around the first area E1. The thickness of the barrier structure 32 in the first area E1 along the thickness direction X of the display panel 1 is greater than or equal to the thickness of the barrier structure 32 in the second area E2 along the thickness direction X of the display panel 1.

[0077] In some optional embodiments, the first region E1 is located near the center of the display panel 1, and the second region E2 is located at the edge of the display panel 1. In other optional embodiments, the first region E1 is located in any region of the display panel 1, and the second region E2 is located around the display area. It should be noted that the display panel 1 may also have a third region, a fourth region... an Nth region, and the thickness of the retaining wall structure 32 in each region may be different; the thickness of the retaining wall structure 32 in some regions may also be different.

[0078] In this embodiment, the thickness of the barrier structure 32 in the second zone E2 is small, which reduces the light-blocking effect and results in higher brightness of the emitted light. The thickness of the barrier structure 32 in the first zone E1 is large, which increases the light-blocking effect and results in lower brightness of the emitted light. When mainly observing the displayed image in the first zone E1, the light in the second zone E2 can also reach the user's eyes, and the difference in brightness attenuation between the two zones is reduced, further improving the display effect of the display panel 1.

[0079] Please continue to refer to Figure 7 and Figure 8 In some optional embodiments of this application, the slope of the sidewall 321 of the retaining wall structure 32 in the first region E1 is greater than the slope of the sidewall 321 of the retaining wall structure 32 in the second region E2.

[0080] In some optional embodiments of this application, taking the first area E1 as the central area of ​​the display panel 1 as an example, the light emission angle of the filter unit 40 in the first area E1 is smaller than the light emission angle of the filter unit 40 in the second area E2, thereby increasing the viewing range of the display panel 1 at a wide viewing angle and improving the user experience.

[0081] Please continue to refer to Figure 8 In some optional embodiments of this application, the area of ​​the opening 31 is greater than or equal to the area of ​​the light-emitting element 21 exposed thereon.

[0082] As some alternative embodiments, the area of ​​the opening 31 is greater than or equal to the light-emitting area of ​​the light-emitting element 21, thereby increasing the area of ​​the emitted light from the light-emitting element 21 and increasing the opening ratio of the display panel 1.

[0083] On the other hand, embodiments of this application also provide a display device, including any of the display panels 1 described above.

[0084] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel comprising a display light entrance face and a display light exit face, characterized in that, The display panel comprises: a substrate; a display functional layer on the substrate, the display functional layer comprising a plurality of light emitting elements; a shielding layer arranged on a side of the display functional layer facing the display light exit surface, the shielding layer comprising a plurality of openings and a barrier wall structure distributed around the openings, the openings exposing the light emitting elements, and the thickness of the barrier wall structure between two adjacent openings gradually decreases from the display light incident surface to the display light exit surface; a light filtering unit arranged on the display functional layer corresponding to each opening; the barrier wall structure comprises a plurality of side walls enclosing the opening, and the slopes of the side walls of the barrier wall structure corresponding to at least part of the light emitting elements of different colors are different relative to the substrate.

2. The display panel of claim 1, wherein, The light filtering unit comprises two or more sub-light filtering units of different colors, and the slopes of at least part of the side walls of the barrier wall structure corresponding to the sub-light filtering units of at least one color are different.

3. The display panel of claim 2, wherein, The light filtering unit comprises first, second and third sub-light filtering units of different colors, and the barrier wall structure comprises first, second and third sub-barrier wall structures, the first sub-barrier wall structure is arranged between adjacent first and second sub-light filtering units, the second sub-barrier wall structure is arranged between adjacent second and third sub-light filtering units, and the third sub-barrier wall structure is arranged between adjacent first and third sub-light filtering units; wherein the slope of the side wall of any one of the first, second and third sub-barrier wall structures matches the sub-light filtering unit adjacent to the side wall.

4. The display panel of claim 3, wherein, The slope of the side wall of the first sub-barrier wall structure facing the first sub-light filtering unit is different from the slope of the side wall of the first sub-barrier wall structure facing the second sub-light filtering unit, and / or the slope of the side wall of the second sub-barrier wall structure facing the second sub-light filtering unit is different from the slope of the side wall of the second sub-barrier wall structure facing the third sub-light filtering unit, and / or the slope of the side wall of the third sub-barrier wall structure facing the first sub-light filtering unit is different from the slope of the side wall of the third sub-barrier wall structure facing the third sub-light filtering unit.

5. The display panel of claim 2, wherein, The color of the light filtering unit is the same as the color of the corresponding light emitting element.

6. The display panel of claim 1, wherein, The vertical distance from at least part of the side of the barrier wall structure facing away from the display functional layer to the display functional layer is different.

7. The display panel of claim 6, wherein, Any two barrier wall structures are arranged apart along the thickness direction of the display panel, i.e., the thickness between any two barrier wall structures is not the same.

8. The display panel of claim 6, wherein, At least part of the barrier wall structure comprises a top surface and a sub-surface on the top surface, the sub-surface is adjustable within the top surface, and the sub-surface between adjacent two openings of the barrier wall structure is arranged inclined relative to the substrate.

9. The display panel of claim 8, wherein, The top surface of the barrier wall structure between two adjacent openings is convexly arranged towards the display light exit surface.

10. The display panel of claim 1, wherein, The display panel includes a first region and a second region disposed around the first region, a thickness of the barrier wall structure in the first region in a thickness direction of the display panel is greater than or equal to a thickness of the barrier wall structure in the second region in the thickness direction of the display panel.

11. The display panel of claim 10, wherein, A slope of the sidewall of the barrier wall structure in the first region is greater than a slope of the sidewall of the barrier wall structure in the second region.

12. The display panel of claim 1, wherein, An area of the opening is greater than or equal to an area of the light emitting element exposed thereby.

13. A display device comprising: A display panel as claimed in any one of claims 1 to 12.

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