Display panel and display device

Abstract

The application relates to the technical field of display, and provides a display panel and a display device. The display panel comprises a substrate and a pixel definition layer. The pixel definition layer is located on one side of the substrate. The pixel definition layer comprises a first adjusting area and a pixel opening which is surrounded by the first adjusting area. A surface of the first adjusting area away from the substrate forms a first adjusting surface. In a direction perpendicular to a plane where the substrate is located, the first adjusting surface is arranged to be inclined towards the substrate from one end of the pixel opening. The use performance of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, more particularly, relates to a display panel and a display device. BACKGROUND

[0002] Organic light emitting diode (OLED) and flat display devices based on light emitting diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range, and have become the mainstream of display devices.

[0003] However, the use performance of the current OLED display product needs to be improved. SUMMARY

[0004] The present application provides a display panel and a display device to at least partially improve the use performance of the display panel.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: in a first aspect, a display panel is provided, comprising a substrate and a pixel definition layer, the pixel definition layer being located on one side of the substrate, the pixel definition layer comprising a first adjustment area and a pixel opening enclosed by the first adjustment area, the first adjustment area forming a first adjustment surface away from the surface of the substrate;

[0006] In a direction perpendicular to the plane in which the substrate is located, the first adjustment surface is inclined towards the substrate away from one end of the pixel opening.

[0007] In the display panel provided in the embodiments of the present application, by setting the first adjustment area of the pixel definition layer for enclosing the pixel opening to be inclined towards the side away from the substrate at one end close to the pixel opening, the reflection direction of the ambient light irradiating the first adjustment area is changed and directed to the direction of the black matrix, so as to achieve the effect of reducing the ambient light reflectivity.

[0008] Optionally, the display panel further comprises a filling layer and a light shielding layer, the filling layer covering the pixel definition layer, the light shielding layer being located on the side of the filling layer away from the substrate and enclosing a plurality of light transmission openings, the light transmission openings being correspondingly arranged with the pixel openings, and the orthographic projection of the light shielding layer on the substrate being arranged apart from the orthographic projection of the pixel opening on the substrate.

[0009] Optionally, the orthographic projection of the light shielding layer on the substrate is arranged apart from the orthographic projection of the first adjustment surface on the substrate.

[0010] Optionally, a projection outline of the light-shielding layer on the substrate partially overlaps with a projection outline of the first adjusting surface on the substrate.

[0011] Optionally, an angle between the first adjusting surface close to one end of the pixel opening and the plane where the substrate is located is greater than a preset angle.

[0012] In a direction perpendicular to the plane where the substrate is located, a distance between a projection of the light-shielding layer on the substrate and a projection of the pixel opening on the substrate is a first distance, a distance between a surface of the light-shielding layer close to one side of the substrate and an end of the first adjusting surface close to the pixel opening is a second distance, and the following relationship is satisfied:

[0013]

[0014] wherein θ is the preset angle, d is the first distance, h is the second distance, and n is a refractive index of the filling layer.

[0015] Optionally, α is 8°.

[0016] Optionally, at least part of the first adjusting surface is a curved surface.

[0017] Optionally, in a direction perpendicular to the plane where the substrate is located, a cross section of the first adjusting surface includes at least two arc surface segments, and among the at least two arc surface segments, an angle between the arc surface segment close to one side of the substrate and the plane where the substrate is located is smaller than an angle between the arc surface segment away from one side of the substrate and the plane where the substrate is located.

[0018] Optionally, among any two adjacent arc surface segments, an angle between the arc surface segment close to one side of the substrate and the plane where the substrate is located is smaller than an angle between the arc surface segment away from one side of the substrate and the plane where the substrate is located.

[0019] Optionally, in a direction close to the substrate, the angle between the arc surface segment and the substrate gradually decreases.

[0020] Optionally, the display panel further includes a light filtering element, the light filtering element is located on a side of the filling layer away from the substrate and is arranged corresponding to the pixel opening.

[0021] Optionally, the light filtering element and the light-shielding layer are located in the same layer and are arranged in a spaced manner.

[0022] Optionally, at least part of the light filtering element is located in the light-transmitting opening.

[0023] Optionally, a projection of the light filtering element on the substrate overlaps with a projection of the light-transmitting opening on the substrate.

[0024] Optionally, a normal projection of the pixel opening on the substrate is located within a normal projection of the light-transmissive opening on the substrate.

[0025] Optionally, the display panel further comprises a protruding portion arranged corresponding to the pixel opening, the protruding portion being located between the pixel definition layer and the substrate.

[0026] A side surface of the protruding portion facing away from the substrate comprises a supporting surface and a second adjusting surface, the second adjusting surface being arranged around the supporting surface, the first adjusting region covering the second adjusting surface, and the supporting surface being exposed relative to the pixel opening.

[0027] The second adjusting surface is arranged to be inclined towards the same side as the first adjusting surface, and the inclination of the second adjusting surface is greater than the inclination of the first adjusting surface.

[0028] Optionally, at least part of the second adjusting surface is curved.

[0029] Optionally, in a direction perpendicular to the plane in which the substrate lies, a cross section of the second adjusting surface comprises at least two curved segments, and in the at least two curved segments, the curved segment closer to the substrate has a smaller included angle with the plane in which the substrate lies than the curved segment farther away from the substrate.

[0030] Optionally, in any two adjacent curved segments, the curved segment closer to the substrate has a smaller included angle with the plane in which the substrate lies than the curved segment farther away from the substrate.

[0031] Optionally, in a direction closer to the substrate, the included angle between the curved segment and the substrate gradually decreases.

[0032] Optionally, the included angle between each curved segment and the plane in which the substrate lies ranges from 20° to 60°.

[0033] Optionally, in a direction perpendicular to the plane in which the substrate lies, the thickness of the protruding portion is greater than 1 μm.

[0034] Optionally, the display panel further comprises a light-emitting element, the light-emitting element comprising a first electrode, a light-emitting functional layer, and a second electrode, the first electrode being located between the pixel definition layer and the substrate, the first electrode covering a side of the protruding portion facing away from the substrate and part of a surface of the first electrode being exposed through the pixel opening, the light-emitting functional layer covering the pixel opening, and the second electrode being located on a side of the light-emitting functional layer facing away from the substrate and covering the first adjusting surface.

[0035] Optionally, a projection of the protrusion on the substrate is located within a projection of the first electrode on the substrate.

[0036] Optionally, a distance between an outer contour of the projection of the first electrode on the substrate and an outer contour of the projection of the protrusion on the substrate is not less than 1 μm.

[0037] Optionally, a projection of the first adjustment region on the substrate is located within a projection of the first electrode on the substrate.

[0038] Optionally, the pixel definition layer further comprises a ramp region, the ramp region being located on a side of the first adjustment region away from the pixel opening.

[0039] A surface of the ramp region away from the substrate forms a ramp surface, a projection of the ramp surface on the substrate is located on a periphery of a projection of the first adjustment region on the substrate.

[0040] Optionally, an outer contour of the projection of the ramp surface on the substrate partially overlaps with an outer contour of the projection of the first adjustment region on the substrate.

[0041] Optionally, the pixel definition layer has a light-transmitting layer and a light-absorbing layer arranged in a stack, the light-transmitting layer being located on a side of the light-absorbing layer away from the substrate, and a projection of the light-transmitting layer on the substrate has a distance from a projection of the pixel opening on the substrate, the light-absorbing layer being configured to absorb ambient light.

[0042] Optionally, the first adjustment region is formed in the light-absorbing layer, and the ramp region is formed in the light-transmitting layer.

[0043] Optionally, a material of the light-absorbing layer comprises a black material.

[0044] In a second aspect, the present application further provides a display device comprising the display panel as described in any one of the above.

[0045] The display device provided by the embodiments of the present application comprises the display panel as described above, and thus has at least the beneficial effects of the display panel as described in any one or more of the above. For details, refer to the above description, which will not be repeated here.

[0046] The beneficial effects of the display panel and display device provided in this application are as follows: Compared with related technologies, the display panel provided in this application can obtain a tilted first adjustment surface by adjusting the shape of the area located between the light-transmitting opening and the pixel opening. The special shape of the first adjustment surface can reflect the light irradiated to this area to the bottom of the light-shielding layer. By reducing the reflected light emitted through the light-transmitting opening, the reflectivity of the display panel to ambient light is effectively reduced, which helps to improve the optical effect of the display panel in the dark state and optimize the performance of the display panel. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the planar structure of the display surface provided in the embodiments of this application;

[0049] Figure 2 for Figure 1 The image shows an enlarged view of the structure of area A in the display panel.

[0050] Figure 3 for Figure 2 The diagram shows a first cross-sectional structure of the display panel.

[0051] Figure 4 for Figure 3 Enlarged view of the structure of region B in the middle;

[0052] Figure 5 for Figure 2 The diagram shows a second cross-sectional structure of the display panel.

[0053] Figure 6 for Figure 2 The diagram shows a third cross-sectional structure of the display panel.

[0054] Figure 7 for Figure 2 BB-direction sectional view in the middle;

[0055] Figure 8 This is a schematic diagram of the planar structure of the display device provided in the embodiments of this application.

[0056] The following are the labeling elements in the figure:

[0057] 100. Display device; 10. Display panel;

[0058] 1, substrate; 2, pixel definition layer; 21, first adjusting area; 211, first adjusting surface; 2111, arc surface segment; 22, climbing area; 221, climbing surface; 210, light transmission layer; 220, light absorption layer; 201, pixel opening; 3, filling layer; 31, first encapsulation layer; 32, second encapsulation layer; 33, third encapsulation layer; 34, touch layer; 4, light shielding layer; 401, light transmission opening; 5, light filtering element; 6, protruding part; 61, supporting surface; 62, second adjusting surface; 621, curved surface segment; 7, light emitting element; 71, first electrode; 72, light emitting functional layer; 73, second electrode. DETAILED DESCRIPTION

[0059] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0060] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0061] In the description of the present application, 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", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0063] In this application, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between components; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In this application, unless otherwise expressly 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," "on top of," and "over" 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.

[0065] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. 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.

[0066] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).

[0067] As used herein, the term "layer" can refer to a portion of material that includes a region having a thickness. A layer can extend over an entire underlying or overlying structure, or can have a scope less than the scope of an underlying or overlying structure. Further, a layer can be a region of a continuous structure that is uniform or non-uniform in composition, having a thickness less than the thickness of the continuous structure. For example, a layer can be between or at any pair of lateral planes between a top surface and a bottom surface of the continuous structure. A layer can extend laterally, vertically, and / or along a tapered surface. A substrate can be a layer, can include one or more layers therein, and / or can have one or more layers thereon, thereabove, and / or therebelow. Layers can include multiple layers. For example, an interconnect layer can include one or more conductor and contact layers (within which contacts, interconnect lines, and / or vias are formed) and one or more dielectric layers.

[0068] In a conventional display panel, after the cathode material plating process is completed, there will be a mirror effect, which is easy to reflect external ambient light, affecting the display brightness and contrast of the device. The traditional solution is to use a circular polarizer to weaken the influence of ambient light, but the circular polarizer will reduce the light transmittance and increase the screen thickness. In view of this situation, some display panels use COE (Color Filter on Encapsulation) technology. The COE technology removes the polarizer and directly forms a color film outside the encapsulation layer, which not only reduces the thickness of the display panel, but also improves the light transmittance of the display panel, so that the screen can present brighter and clearer images.

[0069] In the implementation process of the present application, the inventors found that the related art has the following problems: the display panel 10 has a problem of high reflectivity, which affects the display effect of the display panel 10 to some extent, and ultimately affects its use performance.

[0070] Based on this, the embodiments of the present application provide a display panel 10 to at least alleviate or improve the above technical problems.

[0071] In a first aspect, the embodiments of the present application provide a display panel 10, which comprises a substrate 1 and a pixel definition layer 2, the pixel definition layer 2 is located on one side of the substrate 1, the pixel definition layer 2 comprises a first adjustment area 21 and a pixel opening 201 enclosed by the first adjustment area 21, the surface of the first adjustment area 21 away from the substrate 1 forms a first adjustment face 211; in the direction perpendicular to the plane where the substrate 1 is located, the end of the first adjustment face 211 away from the pixel opening 201 is inclinedly arranged towards the substrate 1.

[0072] Please refer to Figure 1 and Figure 2 The number of the above-mentioned pixel openings 201 is multiple.

[0073] Specifically, the first adjusting region 21 is a hollow annular structure, and the periphery of any one pixel opening 201 is surrounded by the first adjusting region 21. The side surface of the first adjusting region 21 away from the substrate 1 is a first adjusting surface 211 which is inclined.

[0074] Please refer to Figure 3 The orthogonal projection of the first adjusting surface 211 on the substrate 1 is located at the periphery of the orthogonal projection of the pixel opening 201 on the substrate 1, and the orthogonal projection of the first adjusting surface 211 on the substrate 1 is an annular structure.

[0075] Since the end of the first adjusting surface 211 away from the pixel opening 201 is inclined towards the substrate 1, the distance between the end of the first adjusting surface 211 close to the pixel opening 201 and the substrate 1 is greater than the distance between the end of the first adjusting surface 211 away from the pixel opening 201 and the substrate 1. At this time, the first adjusting surface 211 can form an outward inclined slope structure as shown in Figure 3 When ambient light is irradiated to the first adjusting surface 211 from the outside of the display panel 10, the first adjusting surface 211 serves as the interface of light rays from one medium to another medium, and reflection can occur on its surface, and the reflected light rays are emitted in a direction symmetrical to the incident angle of the incident light rays. Since the end of the first adjusting surface 211 away from the pixel opening 201 is inclined towards the substrate 1, for example, in the direction shown in Figure 3 After the incident light rays from above are reflected on the first adjusting surface 211, the reflected light rays will be deflected towards the side away from the pixel opening 201 relative to the incident light rays and emitted.

[0076] Please refer to Figure 3 The display panel 10 provided by the embodiment of the present application further comprises a light shielding layer 4 located on the side of the pixel definition layer 2 away from the substrate 1. The light shielding layer 4 comprises a black matrix (BM). The black matrix is composed of black material and can play a role of light shielding on the surface of the display panel 10.

[0077] Specifically, the orthogonal projection of the light shielding layer 4 on the substrate 1 is arranged in a spaced manner with the orthogonal projection of the pixel opening 201 on the substrate 1.

[0078] The reflected light rays will be emitted to the light shielding layer 4 composed of the black matrix. Since the light shielding layer 4 has good light shielding and ambient light absorption effect, the ambient light reflectivity at the first adjusting surface 211 can be effectively reduced, so as to improve the display effect of the display panel 10.

[0079] In the display panel 10 provided in the embodiments of the present application, by setting the pixel definition layer 2 to form the first adjusting area 21 surrounding the pixel opening 201, the end of the first adjusting area 21 close to the pixel opening 201 is inclined towards the side of the substrate 1 facing away from the substrate 1, so that the reflection direction of the ambient light irradiated to the first adjusting area 21 is changed and irradiated to the position of the black matrix, thereby achieving the effect of reducing the ambient light reflectivity.

[0080] Referring to Figure 3 The light shielding layer 4 is formed by patterning to avoid the pixel opening 201.

[0081] Specifically, the light shielding layer 4 forms a plurality of light transmission openings 401 surrounding the pixel opening 201.

[0082] In some embodiments, the orthographic projection of the first adjusting surface 211 on the substrate 1 is located within the orthographic projection of the light transmission opening 401 on the substrate 1.

[0083] Referring to Figure 3 At this time, the orthographic projection of the light shielding layer 4 on the substrate 1 is spaced apart from the orthographic projection of the first adjusting surface 211 on the substrate 1.

[0084] In other similar embodiments, the orthographic projection of the light shielding layer 4 on the substrate 1 can be arranged to be adjacent to the orthographic projection of the first adjusting surface 211 on the substrate 1, and at this time, the outer contour of the orthographic projection of the light shielding layer 4 on the substrate 1 partially overlaps with the outer contour of the orthographic projection of the first adjusting surface 211 on the substrate 1.

[0085] Specifically, the orthographic projection of the end of the first adjusting surface 211 away from the substrate 1 on the substrate 1 can exactly fall on the orthographic projection contour of the light shielding layer 4 on the substrate 1.

[0086] In some embodiments, the display panel 10 further comprises a filling layer 3, and the filling layer 3 covers the pixel definition layer 2 and is located on the side of the light shielding layer 4 close to the substrate 1.

[0087] Specifically, the filling layer 3 is located between the pixel definition layer 2 and the light shielding layer 4, and the light shielding layer 4 is located on the side of the filling layer 3 away from the substrate 1.

[0088] Referring to Figure 3 The filling layer 3 represents various film layers between the pixel definition layer 2 and the light shielding layer 4 in the display panel 10, including but not limited to film layer structures such as an encapsulation layer and a touch layer 34.

[0089] In some embodiments, the filling layer 3 comprises a first encapsulation layer 31 made of an organic material.

[0090] In other similar embodiments, the filling layer 3 further comprises a second encapsulation layer 32, which is located between the first encapsulation layer 31 and the pixel definition layer 2, and is made of an organic material. Specifically, the material of the second encapsulation layer 32 is substantially the same as that of the first encapsulation layer 31.

[0091] Specifically, the second encapsulation layer 32 covers the pixel opening 201 of the pixel definition layer 2.

[0092] In other similar embodiments, the filling layer 3 further comprises a third encapsulation layer 33, which is located on the side of the first encapsulation layer 31 away from the substrate 1. That is, the third encapsulation layer 33 covers the first encapsulation layer 31.

[0093] Specifically, the third encapsulation layer 33 is made of an inorganic material.

[0094] In other embodiments, the filling layer 3 further comprises a touch layer 34, which is located on the side of the third encapsulation layer 33 away from the substrate 1. That is, the touch layer 34 covers the third encapsulation layer 33, and is located between the third encapsulation layer 33 and the light shielding layer 4.

[0095] Please refer to Figure 6 The thickness of the first encapsulation layer 31 is greater than that of any one of the second encapsulation layer 32, the third encapsulation layer 33, and the touch layer 34.

[0096] Specifically, the thickness of the first encapsulation layer 31 is greater than the sum of the thicknesses of the second encapsulation layer 32, the third encapsulation layer 33, and the touch layer 34.

[0097] In some embodiments, the thicknesses of the second encapsulation layer 32, the third encapsulation layer 33, and the touch layer 34 are much smaller than that of the first encapsulation layer 31. Therefore, the above-mentioned various film layers can be regarded as the same film layer structure, i.e., the filling layer 3.

[0098] In order to form the first adjustment area 21 with the above-mentioned inclined shape, in some embodiments, the display panel 10 further comprises a protruding portion 6, please refer to Figure 3 .

[0099] Specifically, the protruding portion 6 is located at and opposite to the pixel opening 201. The protruding portion 6 is located between the pixel definition layer 2 and the substrate 1, and the pixel opening 201 is formed on the side of the protruding portion 6 away from the substrate 1.

[0100] Please refer to Figure 3 and Figure 4The protruding portion 6 is a middle protruding portion, and has a bump-shaped structure with a slope structure around the protruding portion 6. The side surface of the protruding portion 6 away from the substrate 1 includes a supporting surface 61 and a second adjusting surface 62, wherein the supporting surface 61 is located in the middle of the protruding portion 6, and the second adjusting surface 62 is located around the supporting surface 61.

[0101] Specifically, in the direction perpendicular to the plane where the substrate 1 is located, the thickness of the protruding portion 6 is greater than 1 μm. That is, the maximum distance between the side of the supporting surface 61 away from the substrate 1 and the side close to the substrate 1 is not less than 1 μm.

[0102] In some embodiments, the first adjusting region 21 covers the second adjusting surface 62, and the pixel opening 201 is formed on the side of the supporting surface 61 away from the substrate 1, and the supporting surface 61 is exposed relative to the pixel opening 201. That is, the light emitting element 7 for emitting light is at least partially located on the side of the supporting surface 61 away from the substrate 1.

[0103] Specifically, the second adjusting surface 62 is an annular structure arranged around the supporting surface 61, and the first adjusting region 21 covers the second adjusting surface 62.

[0104] Specifically, the orthographic projection of the second adjusting surface 62 on the substrate 1 is located within the orthographic projection of the first adjusting surface 211 on the substrate 1; or, the orthographic projection of the second adjusting surface 62 on the substrate 1 coincides with the orthographic projection of the first adjusting surface 211 on the substrate 1.

[0105] Please refer to Figure 3 The second adjusting surface 62 and the first adjusting surface 211 are inclined towards the same side, and the inclination of the second adjusting surface 62 is greater than the inclination of the first adjusting surface 211.

[0106] The first adjusting region 21 of the pixel defining layer 2 covers the second adjusting surface 62 of the protruding portion 6 and forms the slope-shaped first adjusting surface 211 on the side of the second adjusting surface 62 away from the substrate 1, so as to achieve a desired special reflection surface profile capable of reflecting the incident ambient light.

[0107] Specifically, the first adjusting surface 211 has a first end close to the pixel opening 201 and a second end away from the pixel opening 201; the second adjusting surface 62 has a third end close to the pixel opening 201 and a fourth end away from the pixel opening 201, and the orthographic projection of the first end on the substrate 1 at least partially coincides with the orthographic projection of the third end on the substrate 1, and the orthographic projection of the second end on the substrate 1 at least partially coincides with the orthographic projection of the fourth end on the substrate 1. In the direction perpendicular to the plane where the substrate 1 is located, the distance between the first end and the second end is a first height, the distance between the third end and the fourth end is a second height, and the second height is greater than the first height.

[0108] The height difference between the first end and the second end in the first adjustment surface 211 is smaller than the height difference between the third end and the fourth end in the second adjustment surface 62, which means that the inclination of the first adjustment surface 211 is smaller than the inclination of the second adjustment surface 62.

[0109] The first end and the third end are respectively located at one end of the first adjustment surface 211 and the second adjustment surface 62 which points to the pixel opening 201.

[0110] The first adjustment surface 211 and the second adjustment surface 62 are both relatively smooth surfaces. In an ideal state, the first adjustment surface 211 and the second adjustment surface 62 are smooth surfaces.

[0111] At least part of the first adjustment surface 211 is a plane. When the first adjustment surface 211 is a plane, the angle between the first adjustment surface 211 and the substrate 1 is consistent at different positions.

[0112] In other similar embodiments, at least part of the first adjustment surface 211 is a curved surface.

[0113] Please refer to Figure 4 In the direction perpendicular to the plane where the substrate 1 is located, the cross section of the first adjustment surface 211 is composed of smooth line segments.

[0114] The cross section of the first adjustment surface 211 includes at least one arc segment 2111.

[0115] Specifically, the cross section of the first adjustment surface 211 includes at least two arc segments 2111. Among the at least two arc segments 2111, the angle between the arc segment 2111 close to the substrate 1 and the plane where the substrate 1 is located is smaller than the angle between the arc segment 2111 far from the substrate 1 and the plane where the substrate 1 is located.

[0116] In the direction close to the substrate 1, the angle between the arc segment 2111 and the substrate 1 gradually decreases.

[0117] In some embodiments, the cross section of the first adjustment surface 211 includes at least two adjacent arc segments 2111. Among any two adjacent arc segments 2111, the angle between the arc segment 2111 close to the substrate 1 and the plane where the substrate 1 is located is smaller than the angle between the arc segment 2111 far from the substrate 1 and the plane where the substrate 1 is located.

[0118] The structure of the second adjustment surface 62 is basically the same as that of the first adjustment surface 211.

[0119] Specifically, at least part of the second adjustment surface 62 is a plane. When the second adjustment surface 62 is a plane, the angle between the second adjustment surface 62 and the substrate 1 is consistent at different positions.

[0120] In other similar embodiments, at least part of the second adjustment surface 62 is curved.

[0121] Referring to Figure 4 In the direction perpendicular to the plane on which the substrate 1 lies, the cross section of the second adjustment surface 62 is composed of smooth line segments.

[0122] The cross section of the second adjustment surface 62 includes at least one curved segment 621.

[0123] Specifically, the cross section of the second adjustment surface 62 includes at least two curved segments 621. Among the at least two curved segments 621, the curved segment 621 closer to the substrate 1 has a smaller angle with the plane on which the substrate 1 lies than the curved segment 621 farther from the substrate 1.

[0124] In the direction closer to the substrate 1, the angle between the curved segment 621 and the substrate 1 gradually decreases.

[0125] In some embodiments, the cross section of the second adjustment surface 62 includes at least two adjacent curved segments 621. Among any two adjacent curved segments 621, the curved segment 621 closer to the substrate 1 has a smaller angle with the plane on which the substrate 1 lies than the curved segment 621 farther from the substrate 1.

[0126] Referring to Figure 4 The angle between each curved segment 621 and the plane on which the substrate 1 lies is in the range of 20° to 60°.

[0127] Specifically, the angle between each curved segment 621 and the plane on which the substrate 1 lies can also be in the range of 30° to 50°.

[0128] It should be noted that the curved segments 621 and the arc segments 2111 are mainly used to distinguish the line segments constituting the first adjustment surface 211 and the second adjustment surface 62, and are not considered as limiting the shape of the curved line segments.

[0129] In some embodiments, the orthographic projection of the light shielding layer 4 on the substrate 1 is spaced apart from the orthographic projection of the first adjustment surface 211 on the substrate 1, and at this time, the orthographic projection of the pixel opening 201 on the substrate 1 is located within the orthographic projection of the light transmission opening 401 of the light shielding layer 4 on the substrate 1.

[0130] This structural design can increase the aperture ratio of the light shielding layer 4 to some extent. The greater the aperture ratio of the light shielding layer 4, the more conducive to light emission, and accordingly, the better the viewing angle of the display panel 10. Therefore, a larger light transmission opening 401 helps to increase the viewing angle of the display panel 10 and the brightness of the display panel 10, and also helps to make the color transition between different color light emitting elements 7 more gentle. However, correspondingly, an excessively large aperture ratio will have a negative impact on the reflectivity of the display panel 10.

[0131] In order to overcome the above problems and improve the visual effect of the display panel 10 in the non-lighting state, the size of the light shielding layer 4 needs to be adjusted and limited.

[0132] Please refer to Figure 3 In the direction perpendicular to the plane where the substrate 1 is located, there is a distance between the orthographic projection of the side of the light shielding layer 4 close to the light transmission opening 401 on the substrate 1 and the orthographic projection of the pixel opening 201 on the substrate 1, which is the first distance, denoted as d; the distance between the side surface of the light shielding layer 4 close to the substrate 1 and the end of the first adjusting surface 211 close to the pixel opening 201 is the second distance, denoted as h.

[0133] The angle between the end of the first adjusting surface 211 close to the pixel opening 201 and the plane where the substrate 1 is located should be not less than (or greater than) the preset angle θ.

[0134] The relationship between the preset angle and the first distance d and the second distance h is:

[0135]

[0136] Wherein, θ is the preset angle, d is the first distance, h is the second distance, and n is the refractive index of the filling layer 3.

[0137] Specifically, the value of the angle α in the formula is 8°, and α is a detection parameter of the detection equipment.

[0138] In some embodiments, when the area ratio of the pixel opening 201 on the pixel definition layer 2 is 17%, and the first distance between the side of the light shielding layer 4 close to the light transmission opening 401 and the corresponding pixel opening 201 is 5μm, the reflectivity benefit of the display panel 10 is 0.2-0.3; when the area ratio of the pixel opening 201 on the pixel definition layer 2 is 13%, and the first distance between the side of the light shielding layer 4 close to the light transmission opening 401 and the corresponding pixel opening 201 is 8μm, the reflectivity benefit of the display panel 10 is 0.3-0.4.

[0139] The reflectivity benefit can be simply understood as the benefit obtained by reducing the reflectivity. In the display panel 10, reducing the reflectivity can make the screen clear and visible under strong light, reduce the interference of reflected light on vision, and thus improve the user experience.

[0140] When the filling layer 3 is a single film layer, the refractive index is the refractive index of the filling layer 3; when the filling layer 3 is a multi-layer structure, the refractive index can be an equivalent refractive index calculated or the refractive index of the film layer with the largest thickness among the film layers constituting the filling layer 3. The value of the refractive index can be adaptively adjusted as needed, which will not be described here.

[0141] It should be noted that the second distance h can also be regarded as the distance between the side surface of the light shielding layer 4 close to the substrate 1 and the side surface of the protrusion 6 away from the substrate 1 (this distance refers to the film thickness) because the first adjusting surface 211 covers the second adjusting surface 62 of the protrusion 6 and extends to the junction of the second adjusting surface 62 and the supporting surface 61 close to the one end of the pixel opening 201.

[0142] In the direction close to the substrate 1, the angle between the arc surface segment 2111 constituting the first adjusting surface 211 and the substrate 1 gradually decreases, thus the angle between the tangent plane of each position of the first adjusting surface 211 and the substrate 1 gradually decreases in the direction close to the substrate 1. Correspondingly, the angle between the other positions of the first adjusting surface 211 away from the one end of the pixel opening 201 and the substrate 1 can be smaller than the preset angle θ or larger than the preset angle θ, as long as the first adjusting surface 211 can reflect the light entering through the light-transmitting opening 401 to the light shielding layer 4, and the specific angle value is not limited in the embodiment.

[0143] Please refer to Figure 3 , the display panel 10 further comprises a light emitting element 7 located at the pixel opening 201.

[0144] Specifically, the light emitting element 7 comprises a first electrode 71, a light emitting functional layer 72 and a second electrode 73 which are stacked, wherein the first electrode 71 is located between the pixel defining layer 2 and the substrate 1, the first electrode 71 covers the side of the protrusion 6 away from the substrate 1 and part of the surface of the first electrode 71 is exposed through the pixel opening 201, the light emitting functional layer 72 covers the pixel opening 201, and the second electrode 73 is located on the side of the light emitting functional layer 72 away from the substrate 1 and covers the first adjusting surface 211.

[0145] Therefore, the part of the second electrode 73 covering the first adjusting surface 211 forms a reflection surface for reflecting ambient light. Due to the special shape of the first adjusting surface 211, the ambient light irradiated to this position can be reflected to the position below the light shielding layer 4, so as to reduce the reflectivity of the display panel 10. Please refer to Figure 3 , the dotted line in the figure is the light path of the incident light and the reflected light.

[0146] In other embodiments, the first electrode 71 covers the second adjusting surface 62, thus the part of the first electrode 71 covering the second adjusting surface 62 can also form a reflection surface for reflecting ambient light. Since the inclination of the second adjusting surface 62 is larger than that of the first adjusting surface 211, the reflection surface formed on the surface of the first electrode 71 can also have the function of reflecting ambient light to the position below the light shielding layer 4.

[0147] Both of the above reflection surfaces can reflect ambient light to the position below the light shielding layer 4, so as to reduce the reflectivity of the display panel 10.

[0148] One of the first electrode 71 and the second electrode 73 is an anode, and the other is a cathode.

[0149] In the present embodiment, the first electrode 71 is an anode, and the second electrode 73 is a cathode.

[0150] In some embodiments, the first electrode 71 can cover the entire second adjustment surface 62, and in this case, the orthographic projection of the protruding portion 6 on the substrate 1 is located within the orthographic projection of the first electrode 71 on the substrate 1.

[0151] In other similar embodiments, the first electrode 71 can also extend outward beyond the protruding portion 6 in the direction of the plane of the substrate 1.

[0152] Specifically, the distance between the outer contour of the orthographic projection of the first electrode 71 on the substrate 1 and the outer contour of the orthographic projection of the protruding portion 6 on the substrate 1 is not less than 1 μm.

[0153] In some embodiments, the orthographic projection of the first adjustment region 21 on the substrate 1 is located within the orthographic projection of the first electrode 71 on the substrate 1.

[0154] Referring to Figure 3 , the display panel 10 further comprises a light filtering element 5.

[0155] Specifically, the light filtering element 5 is located on the side of the filling layer 3 away from the substrate 1 and is arranged corresponding to the pixel opening 201.

[0156] The light emitting element 7 is located at the pixel opening 201, so the light filtering element 5 is arranged corresponding to the light emitting element 7.

[0157] In some embodiments, the light emitting element 7 includes first, second and third light emitting elements with different light emitting colors, and correspondingly, the light filtering element 5 also has corresponding first, second and third light filtering elements.

[0158] Specifically, the first light filtering element is arranged corresponding to the first light emitting element, the second light filtering element is arranged corresponding to the second light emitting element, and the third light filtering element is arranged corresponding to the third light emitting element.

[0159] It should be noted that the arrangement of the first, second and third light emitting elements with different light emitting colors can have various modes, such as Figure 2 shown. Taking the orientation shown in Figure 2 as an example, the same light emitting elements 7 are arranged in the horizontal direction in sequence and form a pixel row, and different pixel rows formed by different light emitting elements 7 are parallel to each other.

[0160] The different light emitting elements 7 can be arranged in a regular pattern along a fixed direction to form a regular pixel row and a regular pixel column, and the pixel rows and the pixel columns together form a pixel matrix for presenting an image.

[0161] Specifically, the first light emitting element is defined to emit blue light, the second light emitting element is defined to emit green light, and the third light emitting element is defined to emit red light. The first filter element is configured to absorb light of other colors than blue light in the environment to reduce the reflectivity of ambient light, and meanwhile, the blue light emitted by the first light emitting element will not be absorbed by the first filter element. The second filter element is configured to absorb light of other colors than green light in the environment to reduce the reflectivity of ambient light, and meanwhile, the green light emitted by the first light emitting element will not be absorbed by the second filter element. The third filter element is configured to absorb light of other colors than red light in the environment to reduce the reflectivity of ambient light, and meanwhile, the red light emitted by the first light emitting element will not be absorbed by the third filter element.

[0162] In addition, the ambient light not absorbed by the filter element 5 can be guided and reflected to the light shielding layer 4 under the action of the first adjusting surface 211 with a special shape when irradiating the first adjusting area 21 of the pixel defining layer 2, so as to reduce the intensity of the ambient light emitted again through the filter element 5, thereby further reducing the reflectivity of the display panel 10.

[0163] In the embodiment, the filter element 5 and the light shielding layer 4 are located in the same layer and are spaced apart.

[0164] Please refer to Figure 3 The filter element 5 is arranged in the light transmission opening 401 of the light shielding layer 4. Since the size of the filter element 5 required by the corresponding different light emitting element 7 may have certain differences, there is a possibility that the thickness of part of the filter element 5 is greater than the thickness of the light shielding layer 4 and protrudes relative to the light transmission opening 401. The embodiment does not limit this.

[0165] Specifically, at least part of the filter element 5 is located in the light transmission opening 401, and the orthographic projection of the filter element 5 on the substrate 1 coincides with the orthographic projection of the light transmission opening 401 on the substrate 1.

[0166] In addition, please refer to Figure 3 In the thickness direction of the display panel 10, the protruding portion 6 is located below the filter element 5, and at least part of the first adjusting area 21 of the pixel defining layer 2 is also located below the filter element 5.

[0167] Please refer to Figure 7 In the thickness direction of the display panel 10, the plurality of light emitting elements 7 are arranged in a certain order and are located below the corresponding filter elements 5 in sequence. The two adjacent filter elements 5 are connected by the light shielding layer 4.

[0168] In some embodiments, the pixel definition layer 2 further comprises a ramping region 22, which is located at a side of the first adjusting region 21 away from the pixel opening 201, please refer to Figure 3 、 Figure 5 and Figure 6 .

[0169] Specifically, a surface of the ramping region 22 away from the substrate 1 forms a ramping surface 221, and a footprint of the ramping surface 221 on the substrate 1 is located at a periphery of a footprint of the first adjusting region 21 on the substrate 1.

[0170] The first adjusting region 21 encloses the pixel opening 201, which means that the first adjusting region 21 is in a ring structure. The ramping region 22 can also be in a ring structure surrounding a periphery of the first adjusting region 21. In a direction perpendicular to a plane where the substrate 1 is located, a footprint of the ramping surface 221 on the substrate 1 is arranged around a footprint of the first adjusting region 21 on the substrate 1, and is located at a side of the footprint of the first adjusting region 21 on the substrate 1 away from a footprint of the pixel opening 201 on the substrate 1.

[0171] Please refer to Figure 3 、 Figure 5 and Figure 6 , the ramping region 22 is located below the light shielding layer 4, and a footprint of the ramping region 22 on the substrate 1 does not overlap with a footprint of the light transmission opening 401 on the substrate 1, at this time, the footprint of the ramping region 22 on the substrate 1 is located within the footprint of the light shielding layer 4 on the substrate 1.

[0172] In some embodiments, the ramping surface 221 directly contacts an end of the first adjusting surface 211 away from the pixel opening 201, at this time, an outer contour of the footprint of the ramping surface 221 on the substrate 1 partially overlaps with an outer contour of the footprint of the first adjusting surface 211 on the substrate 1.

[0173] In other similar embodiments, there is a certain gap between the ramping surface 221 and the end of the first adjusting surface 211 away from the pixel opening 201, at this time, the footprint of the ramping surface 221 on the substrate 1 is arranged apart from the footprint of the first adjusting surface 211 on the substrate 1.

[0174] Due to the influence of machining precision, any one display panel 10 can have one of the above structures, or can have both of the above structures.

[0175] In order to form the above-mentioned ramping surface 221 and the first adjusting surface 211 on a surface of the pixel definition layer 2 away from the substrate 1, in some embodiments, the pixel definition layer 2 can be provided as a multi-layer structure.

[0176] Specifically, the pixel definition layer 2 is a double-layer structure.

[0177] Please refer toFigure 3 The pixel definition layer 2 includes a light-transmitting layer 210 and a light-absorbing layer 220 arranged in a stack, and the light-transmitting layer 210 is located on the side of the light-absorbing layer 220 away from the substrate 1. There is a certain spacing between the light-transmitting layer 210 and the pixel opening 201, and in addition, the end of the light-transmitting layer 210 directed toward the pixel opening 201 can form the aforementioned ramping region 22 and ramping surface 221; the light-absorbing layer 220 covers the second adjustment surface 62 of the protruding portion 6 to form the aforementioned first adjustment region 21 and first adjustment surface 211.

[0178] Specifically, the orthographic projection of the light-transmitting layer 210 on the substrate 1 is spaced apart from the orthographic projection of the pixel opening 201 on the substrate 1.

[0179] In this embodiment, the light-transmitting layer 210 is made of a material with good light-transmitting effect, and the light-absorbing layer 220 includes a black material for absorbing ambient light.

[0180] Specifically, the material of the light-transmitting layer 210 includes at least one of photosensitive polyimide, colorless acrylic resin, and the like; and the black material used to form the light-absorbing layer 220 can include carbon black, organic light-absorbing material, and the like.

[0181] In order to form the aforementioned ramping surface 221 and first adjustment surface 211 on the side surface of the pixel definition layer 2 away from the substrate 1, in some embodiments, the aforementioned pixel definition layer 2 can be provided as a single-layer structure.

[0182] Referring to Figure 5 The aforementioned pixel definition layer 2 can be made of a material with good light-transmitting effect, and the light-transmitting layer 210 forms the first adjustment region 21 with an outward slope by covering the second adjustment surface 62 of the protruding portion 6.

[0183] It can be understood that the display panel 10 provided by the embodiments of the present application can obtain the inclined first adjustment surface 211 by adjusting the shape of the region between the light-transmitting opening 401 and the pixel opening 201, and the special shape of the first adjustment surface 211 can reflect the light irradiated to the region to the light-shielding layer 4 below, thereby effectively reducing the reflectivity of the display panel 10 to ambient light in the manner of reducing the reflected light exiting through the light-transmitting opening 401, which helps to improve the optical effect of the display panel 10 in a dark state and optimize the use performance of the display panel 10.

[0184] In a second aspect, the present application also provides a display device 100, referring to Figure 8 The display device 100 includes the display panel 10 described in any of the above embodiments.

[0185] For the specific structure of the display panel 10, please refer to the specific description in the foregoing embodiments, which will not be described here again.

[0186] The display device 100 provided by the embodiment can be a mobile phone, a notebook, a tablet computer, a smart watch, a smart bracelet, a navigator, a display, a personal digital assistant (PDA) or the like, or a product or component having a display function.

[0187] Since the display device 100 has the display panel 10 described above, the display device 100 at least includes the beneficial effects of any one or several of the display panels 10 described above, and specific effects are described above and will not be repeated here.

[0188] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that, include: Substrate; A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a first adjustment area and a pixel opening enclosed by the first adjustment area. The surface of the first adjustment area facing away from the substrate forms a first adjustment surface. A light-shielding layer is located on the side of the pixel definition layer facing away from the substrate. The light-shielding layer encloses and forms a plurality of light-transmitting openings, which are correspondingly arranged with the pixel openings. A filling layer covers the pixel definition layer, and a light-shielding layer is located on the side of the filling layer facing away from the substrate. The orthographic projection of the light-shielding layer on the substrate and the orthographic projection of the pixel opening on the substrate are spaced apart. In a direction perpendicular to the plane of the substrate, the end of the first adjustment surface away from the pixel opening is inclined toward the substrate.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the light-shielding layer on the substrate is spaced apart from the orthographic projection of the first adjustment surface on the substrate.

3. The display panel according to claim 1, characterized in that, The outer contour of the light-shielding layer projected onto the substrate partially overlaps with the outer contour of the first adjustment surface projected onto the substrate.

4. The display panel according to claim 1, characterized in that, The angle between the end of the first adjustment surface near the pixel opening and the plane where the substrate is located is greater than a preset angle; In a direction perpendicular to the plane of the substrate, the distance between the orthographic projection of the light-shielding layer onto the substrate and the orthographic projection of the pixel opening onto the substrate is a first distance, and the distance between the surface of the light-shielding layer near the substrate and the end of the first adjustment surface near the pixel opening is a second distance. Then: ； Wherein, θ is the preset angle, d is the first distance, h is the second distance, and n is the refractive index of the filling layer.

5. The display panel according to claim 4, characterized in that, The value of α is 8°.

6. The display panel according to claim 1, characterized in that, At least a portion of the first adjustment surface is a curved surface.

7. The display panel according to claim 1, characterized in that, In a direction perpendicular to the plane of the substrate, the cross-section of the first adjustment surface includes at least two arcuate segments. Among the at least two arcuate segments, the angle between the arcuate segment closer to the substrate and the plane of the substrate is smaller than the angle between the arcuate segment farther from the substrate and the plane of the substrate.

8. The display panel according to claim 7, characterized in that, In any two adjacent arc segments, the angle between the arc segment closer to the substrate and the plane containing the substrate is smaller than the angle between the arc segment farther from the substrate and the plane containing the substrate.

9. The display panel according to claim 7, characterized in that, Along the direction close to the substrate, the angle between the arc segment and the substrate gradually decreases.

10. The display panel according to any one of claims 1-9, characterized in that, The display panel further includes a protrusion corresponding to the pixel opening, the protrusion being located between the pixel definition layer and the substrate; The protrusion's surface facing away from the substrate includes a support surface and a second adjustment surface. The second adjustment surface surrounds the support surface, the first adjustment area covers the second adjustment surface, and the support surface is exposed relative to the pixel opening. The second adjustment surface and the first adjustment surface are inclined to the same side, and the inclination of the second adjustment surface is greater than that of the first adjustment surface.

11. The display panel according to claim 10, characterized in that, At least a portion of the second adjustment surface is a curved surface.

12. The display panel according to claim 10, characterized in that, In a direction perpendicular to the plane of the substrate, the cross-section of the second adjustment surface includes at least two curved surface segments. Among the at least two curved surface segments, the angle between the curved surface segment closer to the substrate and the plane of the substrate is smaller than the angle between the curved surface segment farther from the substrate and the plane of the substrate.

13. The display panel according to claim 12, characterized in that, In any two adjacent surface segments, the angle between the surface segment closer to the substrate and the plane containing the substrate is smaller than the angle between the surface segment farther from the substrate and the plane containing the substrate.

14. The display panel according to claim 12, characterized in that, Along the direction close to the substrate, the angle between the curved surface segment and the substrate gradually decreases.

15. The display panel according to claim 12, characterized in that, The angle between each of the curved surface segments and the plane containing the substrate ranges from 20° to 60°.

16. The display panel according to claim 10, characterized in that, The thickness of the protrusion is greater than 1 μm in a direction perpendicular to the plane of the substrate.

17. The display panel according to claim 10, characterized in that, The display panel further includes a light-emitting element, which includes a first electrode, a light-emitting functional layer, and a second electrode. The first electrode is located between the pixel definition layer and the substrate. The first electrode covers the side of the protrusion facing away from the substrate, and a portion of the surface of the first electrode is exposed through the pixel opening. The light-emitting functional layer covers the pixel opening. The second electrode is located on the side of the light-emitting functional layer facing away from the substrate and covers the first adjustment surface.

18. The display panel according to claim 17, characterized in that, The orthogonal projection of the protrusion on the substrate lies within the orthogonal projection of the first electrode on the substrate.

19. The display panel according to claim 17, characterized in that, The distance between the outer contour of the first electrode projected onto the substrate and the outer contour of the protrusion projected onto the substrate is not less than 1 μm.

20. The display panel according to claim 17, characterized in that, The orthographic projection of the first adjustment region on the substrate lies within the orthographic projection of the first electrode on the substrate.

21. The display panel according to claim 1, characterized in that, The pixel definition layer also includes a ramp area, which is located on the side of the first adjustment area opposite to the pixel opening; The surface of the climbing area facing away from the substrate forms a climbing surface, and the orthographic projection of the climbing surface on the substrate is located around the orthographic projection of the first adjustment area surface on the substrate.

22. The display panel according to claim 21, characterized in that, The outer contour of the orthographic projection of the ramp surface on the substrate partially coincides with the outer contour of the orthographic projection of the first adjustment surface on the substrate.

23. The display panel according to claim 21 or 22, characterized in that, The pixel definition layer has a light-transmitting layer and a light-absorbing layer stacked together. The light-transmitting layer is located on the side of the light-absorbing layer that faces away from the substrate, and there is a gap between the orthogonal projection of the light-transmitting layer on the substrate and the orthogonal projection of the pixel opening on the substrate. The first adjustment zone is formed in the light-absorbing layer, and the climbing zone is formed in the light-transmitting layer.

24. The display panel according to claim 23, characterized in that, The light-absorbing layer is made of a black material.

25. The display panel according to claim 1, characterized in that, The display panel further includes a filter element located on the side of the filler layer facing away from the substrate and positioned corresponding to the pixel opening.

26. The display panel according to claim 25, characterized in that, The filter element and the light-shielding layer are located on the same layer and are arranged at intervals.

27. The display panel according to claim 25, characterized in that, At least a portion of the filter element is located in the light-transmitting opening.

28. The display panel according to claim 25, characterized in that, The orthographic projection of the filter element on the substrate coincides with the orthographic projection of the light-transmitting opening on the substrate.

29. The display panel according to claim 25, characterized in that, The orthographic projection of the pixel opening on the substrate lies within the orthographic projection of the light-transmitting opening on the substrate.

30. A display device, characterized in that, The display panel includes any one of claims 1-29.

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