Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate and a first film layer located on one side of the substrate, and at least two cup-shaped structures are formed in the first film layer in the direction away from the substrate; the radial sizes of the at least two cup-shaped structures are gradually increased in the direction away from or close to the substrate, and the radial size of each cup-shaped structure is gradually increased; in the direction far away from the substrate, the cup-shaped structure, far away from the substrate, in any two adjacent cup-shaped structures covers the cup-shaped structure, close to the substrate; or in the direction close to the substrate, the cup-shaped structure, closer to the substrate, in any two adjacent cup-shaped structures covers the cup-shaped structure, farther away from the substrate; the reflecting electrode is positioned on one side, deviating from the substrate, of the first film layer and at least covers the cup bottom of the cup-shaped structure with the minimum radial size and the cup side walls of all the cup-shaped structures; the light-emitting functional layer is located on the side, away from or close to the substrate, of the reflecting electrode; the first electrode is located on the side, away from or close to the substrate, of the light-emitting functional layer.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of display technology, and particularly relate to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display screens have attracted widespread attention due to their advantages such as self-luminescence, low power consumption, lightness, flexibility, bright colors, high contrast, and fast response rate. Summary of the invention

[0003] In a first aspect, an embodiment of the present disclosure provides a display panel, comprising a substrate,

[0004] A first film layer, located on one side of the substrate, wherein at least two cup-shaped structures are formed in the first film layer in a direction away from the substrate;

[0005] Along the direction away from or approaching the substrate, the radial dimensions of the at least two cup-shaped structures gradually increase, and the radial dimension of each of the cup-shaped structures gradually increases;

[0006] Along the direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure closer to the substrate on the substrate;

[0007] Alternatively, along the direction approaching the substrate, the orthographic projection of the cup-shaped structure closer to the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure farther from the substrate on the substrate;

[0008] a reflective electrode, located on a side of the first film layer away from the substrate, and having an orthographic projection on the substrate covering at least the cup bottom of the cup-shaped structure with the smallest radial dimension and all cup side walls of the cup-shaped structure;

[0009] a light-emitting functional layer, located on a side of the reflective electrode away from or close to the substrate, and in contact with the reflective electrode;

[0010] The first electrode is located on a side of the light-emitting functional layer away from or close to the substrate and contacts the light-emitting functional layer, and the orthographic projection of the first electrode on the substrate at least covers the orthographic projection of the light-emitting functional layer on the substrate.

[0011] In some embodiments, the first film layer includes a first sublayer and a second sublayer,

[0012] The first sub-layer and the second sub-layer are stacked in sequence in a direction away from the substrate,

[0013] The cup-shaped structure includes a first opening formed in the first sub-layer and a second opening formed in the second sub-layer;

[0014] The radial dimension of the second opening is larger than that of the first opening;

[0015] In the direction away from the substrate, the radial dimension of the first opening gradually increases, and the radial dimension of the second opening gradually increases;

[0016] The orthographic projection of the second opening on the substrate covers the orthographic projection of the first opening on the substrate.

[0017] In some embodiments, the first film layer further includes a third sub-layer located on a side of the second sub-layer away from the first sub-layer,

[0018] The cup-shaped structure further includes a third opening formed in the third sub-layer;

[0019] The radial dimension of the third opening is larger than that of the second opening;

[0020] In the direction away from the substrate, the radial dimension of the third opening gradually increases;

[0021] The orthographic projection of the third opening on the substrate covers the orthographic projection of the second opening on the substrate.

[0022] In some embodiments, the included angle range between the side wall of the first opening and the surface of the first sub-layer close to the substrate is 20° to 60°.

[0023] In some embodiments, the included angle range between the side wall of the second opening and the surface of the second sub-layer close to the substrate is 30° to 60°.

[0024] In some embodiments, the included angle range between the side wall of the third opening and the surface of the third sub-layer close to the substrate is 30° to 60°.

[0025] In some embodiments, the first sub-layer includes a first platform, and the surface of the first platform facing away from the substrate is located between the side walls of the second opening and the first opening, and the three are sequentially joined;

[0026] The reflective electrode is located on a side of the second sub-layer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the first opening, the first platform, and the second opening on the substrate.

[0027] In some embodiments, the first sub-layer includes a first platform, and a side surface of the first platform facing away from the substrate is located between side walls of the second opening and side walls of the first opening, and the three are spliced in sequence;

[0028] And / or, the second sub-layer includes a second platform, and a side surface of the second platform facing away from the substrate is located between side walls of the third opening and side walls of the second opening, and the three are spliced in sequence;

[0029] The reflective electrode is located on a side of the third sub-layer facing away from the substrate, and a positive projection of the reflective electrode on the substrate covers positive projections of the first opening, the first platform, the second opening, the second platform, and the third opening on the substrate.

[0030] In some embodiments, the substrate includes a base, a pixel circuit, and a first planarization layer, and the pixel circuit and the first planarization layer are sequentially stacked on a side of the base close to the first film layer;

[0031] A first via is formed in the first film layer and penetrates through to the first planarization layer, and the pixel circuit is exposed at the first via; the reflective electrode also extends into the first via and is electrically connected to the pixel circuit;

[0032] The display panel further includes a pixel defining layer located on a side of the reflective electrode facing away from the substrate, and a fourth opening is formed in the pixel defining layer,

[0033] A positive projection of the fourth opening on the substrate is located within a positive projection area of the first opening on the substrate,

[0034] The reflective electrode is exposed at the fourth opening.

[0035] In some embodiments, the first sub-layer is reused as a second planarization layer;

[0036] The second sub-layer is reused as a third planarization layer or a spacer layer.

[0037] In some embodiments, the first sub-layer is reused as a second planarization layer,

[0038] The second sub-layer is reused as a third planarization layer,

[0039] The third sub-layer is reused as a fourth planarization layer or a spacer layer.

[0040] In some embodiments, the first film layer includes a first sub-layer and a second sub-layer,

[0041] The first sub-layer and the second sub-layer are sequentially stacked in a direction away from the substrate,

[0042] The cup-shaped structure includes a first convex portion and a second convex portion. The first convex portion is located in the first sub-layer, and the second convex portion is located in the second sub-layer;

[0043] The cross-sectional shape of the first convex portion perpendicular to the substrate includes a trapezoid.

[0044] The reflective electrode is located on the side of the second sub-layer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the first convex portion and the second convex portion on the substrate;

[0045] The shape of the side of the second convex portion away from the substrate is adapted to the shape of the side of the first convex portion away from the substrate;

[0046] The shape of the side of the reflective electrode away from the substrate is adapted to the shape of the side of the second convex portion away from the substrate.

[0047] In some embodiments, the first film layer includes a first sub-layer, a second sub-layer, and a third sub-layer. The first sub-layer, the third sub-layer, and the second sub-layer are stacked in sequence in a direction away from the substrate;

[0048] The cup-shaped structure includes a first convex portion, a second convex portion, and a third convex portion. The first convex portion is located in the first sub-layer, the second convex portion is located in the second sub-layer, and the third convex portion is located in the third sub-layer;

[0049] The cross-sectional shape of the first convex portion perpendicular to the substrate includes a trapezoid, and the cross-sectional shape of the third convex portion perpendicular to the substrate includes a trapezoid.

[0050] The orthographic projection of the third convex portion on the substrate is located within the orthographic projection of the first convex portion on the substrate;

[0051] The reflective electrode is located on the side of the second sub-layer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the second convex portion, the third convex portion, and the first convex portion on the substrate;

[0052] The shape of the side of the third convex portion away from the substrate, the shape of the side of the portion of the first convex portion that does not overlap with the orthographic projection of the third convex portion on the substrate away from the substrate, and the shape of the second convex portion are adapted to each other;

[0053] The shape of the side of the reflective electrode away from the substrate is adapted to the shape of the side of the second convex portion away from the substrate.

[0054] In some embodiments, the area of the orthographic projection of the side surface of the third protrusion close to the substrate on the substrate is smaller than the area of the orthographic projection of the side surface of the first protrusion far from the substrate on the substrate.

[0055] In some embodiments, the angle range of the bottom corner of the first protrusion is 20° to 60°;

[0056] The angle range of the bottom corner of the third protrusion is 30° to 60°.

[0057] In some embodiments, the second sub-layer is reused as a pixel defining layer,

[0058] A fourth opening is formed in the second protrusion, and the orthographic projection of the fourth opening on the substrate is located within the orthographic projection area of the first protrusion on the substrate.

[0059] The first electrode is located between the first sub-layer and the second sub-layer, and the orthographic projection of the first electrode on the substrate covers the orthographic projection of the first protrusion on the substrate.

[0060] The first electrode is exposed at the fourth opening;

[0061] The light-emitting functional layer is located in the fourth opening.

[0062] In some embodiments, the second sub-layer is reused as a pixel defining layer,

[0063] A fourth opening is formed in the second protrusion, and the orthographic projection of the fourth opening on the substrate is located within the overlapping area of the orthographic projections of the first protrusion and the third protrusion on the substrate.

[0064] The first electrode is located between the third sub-layer and the second sub-layer, and the orthographic projection of the first electrode on the substrate covers the orthographic projections of the first protrusion and the third protrusion on the substrate.

[0065] The first electrode is exposed at the fourth opening;

[0066] The light-emitting functional layer is located in the fourth opening.

[0067] In some embodiments, the substrate includes a substrate, a pixel circuit, and a first planar layer, and the pixel circuit and the first planar layer are sequentially stacked on one side of the substrate close to the first film layer;

[0068] A first via is formed in the first sub-layer, and the first via also penetrates through to the first planarization layer, and the pixel circuit is exposed at the first via; the first electrode also extends into the first via and is electrically connected to the pixel circuit;

[0069] The first sub-layer is reused as the second planarization layer.

[0070] In some embodiments, the substrate includes a base, a pixel circuit, and a first planarization layer, and the pixel circuit and the first planarization layer are sequentially stacked on one side of the base close to the first film layer;

[0071] A first via is formed in the third sub-layer, and the first via also penetrates through to the first sub-layer and the first planarization layer, and the pixel circuit is exposed at the first via; the first electrode also extends into the first via and is electrically connected to the pixel circuit;

[0072] The first sub-layer is reused as the second planarization layer;

[0073] The third sub-layer is reused as the third planarization layer or a spacer layer.

[0074] In a second aspect, an embodiment of the present disclosure further provides a display device, which includes the above display panel.

[0075] In the display panel provided by the embodiment of the present disclosure, at least two cup-shaped structures are formed in the first film layer in a direction away from the substrate; in a direction away from or close to the substrate, the radial dimensions of at least two cup-shaped structures gradually increase, and the radial dimension of each cup-shaped structure gradually increases; in a direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure closer to the substrate on the substrate; or, in a direction close to the substrate, the orthographic projection of the cup-shaped structure closer to the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure farther from the substrate on the substrate; the light emitted by the light-emitting functional layer under the electric field action of the reflective electrode and the first electrode can be reflected by the reflective electrode to the light-emitting area within the set viewing angle range of the light-emitting element. Compared with the structure in the related art in which the light-emitting element is disposed in a single cup-shaped opening, in this embodiment, the light-emitting element is located at the bottom of at least two cup-shaped structures. In a direction away from or close to the substrate, the reflective electrode covering the cup side wall of the cup-shaped structure with a larger radial dimension can reflect the light with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element, and further being beneficial to improving the lifespan of the display panel and reducing the power consumption of the display panel.

[0076] The display device provided by the embodiments of the present disclosure improves the light extraction efficiency of the display device by adopting the above-mentioned display panel, which is beneficial to improving the lifespan of the display device and reducing the power consumption of the display device. Description of the Drawings

[0077] The drawings are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation to the present disclosure. By describing the detailed exemplary embodiments with reference to the drawings, the above and other features and advantages will become more obvious to those skilled in the art. In the drawings:

[0078] Figure 1 It is a schematic diagram of light extraction when a light-emitting element is placed in a reflector cup structure in the related art.

[0079] Figure 2a It is a schematic cross-sectional view of a partial structure of a display panel in an embodiment of the present disclosure.

[0080] Figure 2b It is a schematic cross-sectional view of a partial structure of another display panel in an embodiment of the present disclosure.

[0081] Figure 2c It is a schematic cross-sectional view of a partial structure of yet another display panel in an embodiment of the present disclosure.

[0082] Figure 3a It is a schematic cross-sectional view of a partial structure of yet another display panel in an embodiment of the present disclosure.

[0083] Figure 3b It is a schematic cross-sectional view of a partial structure of yet another display panel in an embodiment of the present disclosure.

[0084] Figure 3c It is a schematic cross-sectional view of a partial structure of yet another display panel in an embodiment of the present disclosure. Detailed Embodiments

[0085] To enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, a display panel and a display device provided by the embodiments of the present disclosure will be further described in detail below with reference to the drawings and specific embodiments.

[0086] In the following, the embodiments of the present disclosure will be described more fully with reference to the drawings. However, the disclosed embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0087] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the drawings illustrate the specific shapes of the regions, but are not intended to be limiting.

[0088] Mobile phones, notebooks and other foldable display products have increasing demands for long life and low power consumption, which are difficult to meet with display products composed of a single OLED light-emitting element. Display products using a stacked structure (Tandem structure, i.e., multiple organic light-emitting functional layers are stacked) light-emitting elements can meet the requirements, but the process cost of the light-emitting devices in the display products will increase.

[0089] In the related art, in order to meet the requirements of long life and low power consumption of display products, a reflective cup structure is designed to improve the light extraction efficiency of the light emitting element. Figure 1 Taking the top-emitting OLED light-emitting element as an example, a flat layer 7 is added on one side of the substrate 1, and a cup-shaped opening 70 is provided in the flat layer 7. A pixel defining layer 6 is also provided on the side of the flat layer 7 facing away from the substrate 1. The pixel defining layer 6 has a fourth opening 60 at a position corresponding to the cup-shaped opening 70. The orthographic projection of the fourth opening 60 on the substrate 1 is located within the orthographic projection of the cup-shaped opening 70 on the substrate 1. An OLED light-emitting element 8 is disposed in the cup-shaped opening 70 and the fourth opening 60. The OLED light-emitting element 8 includes an anode 81, a light-emitting functional layer 82 and a cathode 83 which are sequentially stacked on the substrate 1. The anode 81 serves as a reflective electrode and can reflect the light emitted by the light-emitting element 8 toward the display side. Figure 1 It can be seen that the anode 81 covers the bottom and side walls of the cup-shaped opening 70. The anode 81 film covering the side walls of the cup-shaped opening 70 can reflect part of the light emitted by the light-emitting element 8 with a large viewing angle (such as ±60° to ±90°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element 8, thereby improving the light-emitting efficiency of the light-emitting element 8.

[0090] However, in the structure where the light emitting element 8 is arranged in a single cup-shaped opening 70, a large portion of the wide-viewing angle light L emitted by the light emitting element 8 still cannot be utilized, so that the requirements for long life and low power consumption of display products cannot be well met.

[0091] In order to solve the problems in the related art, in a first aspect, an embodiment of the present disclosure provides a display panel, referring to Figure 2a , Figure 2b and Figure 2c, wherein the display panel includes a substrate 1, a first film layer 2 located on one side of the substrate 1, and at least two cup-shaped structures 20 are formed in the first film layer 2 in a direction away from the substrate 1; along the direction away from the substrate 1, the radial dimensions of the at least two cup-shaped structures 20 gradually increase, and the radial dimension of each cup-shaped structure 20 gradually increases; along the direction away from the substrate 1, the positive projection of the cup-shaped structure 20 that is farther from the substrate 1 among any two adjacent cup-shaped structures 20 on the substrate 1 covers the positive projection of the cup-shaped structure 20 that is closer to the substrate 1 on the substrate 1; a reflective electrode 3 located on the side of the first film layer 2 away from the substrate 1, and its positive projection on the substrate 1 covers at least the bottom of the cup-shaped structure 20 with the smallest radial dimension and the cup sidewalls of all cup-shaped structures 20; a light-emitting functional layer 4 located on the side of the reflective electrode 3 away from the substrate 1 and in contact with the reflective electrode 3; a first electrode 5 located on the side of the light-emitting functional layer 4 away from the substrate 1 and in contact with the light-emitting functional layer 4, and the positive projection of the first electrode 5 on the substrate 1 covers at least the positive projection of the light-emitting functional layer 4 on the substrate 1.

[0092] Wherein, the light-emitting functional layer 4 can be a single-layer organic electroluminescent material layer, a stacked organic electroluminescent material layer, or a quantum dot light-emitting material layer. The reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 are stacked and in contact with each other in sequence to form an OLED light-emitting element with a single-layer structure or a stacked structure, or a quantum dot OLED light-emitting element.

[0093] In this embodiment, the reflective electrode 3 serves as the anode of the light-emitting element and needs to be patterned. The first electrode 5 serves as the cathode of the light-emitting element and can be patterned or entirely covered, that is, the cathode entirely covers the substrate 1. In this embodiment, the reflective electrode 3 is made of an opaque metal or metal alloy material, and the first electrode 5 is made of a conductive material that can transmit light or a conductive material that can partially transmit light. The light-emitting element in this embodiment is a top-emitting type.

[0094] In this embodiment, at least two cup-shaped structures 20 are formed in the first film layer 2 in a direction away from the substrate 1; in the direction away from the substrate 1, the radial dimensions of the at least two cup-shaped structures 20 gradually increase, and the radial dimension of each cup-shaped structure 20 gradually increases; in the direction away from the substrate 1, the positive projection of the cup-shaped structure 20 farther from the substrate 1 among any two adjacent cup-shaped structures 20 on the substrate 1 covers the positive projection of the cup-shaped structure 20 closer to the substrate 1 on the substrate 1; the light emitted by the light-emitting functional layer 4 under the electric field action of the reflective electrode 3 and the first electrode 5 can be reflected by the reflective electrode 3 to the light-emitting area within the set viewing angle range of the light-emitting element. Compared with the structure in the related art where the light-emitting element is disposed in a single cup-shaped opening, in this embodiment, the light-emitting element is located at the bottom of at least two cup-shaped structures 20. In the direction away from the substrate 1, the reflective electrode 3 covering the side wall of the cup-shaped structure 20 with a larger radial dimension can reflect the light with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element, and further being beneficial to improving the lifespan of the display panel and reducing the power consumption of the display panel.

[0095] In some embodiments, referring to Figure 2a and Figure 2b , the first film layer 2 includes a first sub-layer 21 and a second sub-layer 22, the first sub-layer 21 and the second sub-layer 22 are stacked in sequence in a direction away from the substrate 1, the cup-shaped structure 20 includes a first opening A formed in the first sub-layer 21 and a second opening B formed in the second sub-layer 22; the radial dimension of the second opening B is larger than the radial dimension of the first opening A; in the direction away from the substrate 1, the radial dimension of the first opening A gradually increases, and the radial dimension of the second opening B gradually increases; the positive projection of the second opening B on the substrate 1 covers the positive projection of the first opening A on the substrate 1.

[0096] Wherein, the cross-sectional shape of the first opening A perpendicular to the substrate 1 is an inverted trapezoid, and the cross-sectional shape of the second opening B perpendicular to the substrate 1 is an inverted trapezoid. The total thickness of the overlapping area of the positive projections of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 is less than the thickness of the first sub-layer 21. With such a setting, the light with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element formed by stacking the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 can be reflected by the reflective electrode 3 covering the side walls of the first opening A and the second opening B to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0097] In some embodiments, the included angle α between the sidewall of the first opening A and the surface of the first sub-layer 21 close to the substrate 1 ranges from 20° to 60°. With such a setting, the reflective electrode 3 covering the sidewall of the first opening A can reflect light within a larger viewing angle (such as ±70° to ±90°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0098] In some embodiments, the included angle θ between the sidewall of the second opening B and the surface of the second sub-layer 22 close to the substrate 1 ranges from 30° to 60°. With such a setting, the reflective electrode 3 covering the sidewall of the second opening B can reflect light within a relatively large viewing angle (such as ±60° to ±70°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0099] In some embodiments, referring to Figure 2a and Figure 2b , the first sub-layer 21 includes a first platform C. The surface of the first platform C facing away from the substrate 1 is located between the sidewalls of the second opening B and the first opening A, and the three are spliced in sequence; the reflective electrode 3 is located on the side of the second sub-layer 22 facing away from the substrate 1, and the orthographic projection of the reflective electrode 3 on the substrate 1 covers the orthographic projections of the first opening A, the first platform C, and the second opening B on the substrate 1.

[0100] Among them, the setting of the first platform C enables the reflective electrode 3 covering the surface of the first platform C facing away from the substrate 1 to further reflect the light reflected by the reflective electrode 3 covering the sidewall of the second opening B to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby further improving the light extraction efficiency of the light-emitting element.

[0101] In some embodiments, referring to Figure 2c , in Figure 2a or Figure 2b , based on the display panel structure shown in

[0102] Among them, the cross-sectional shape of the third opening D perpendicular to the substrate 1 is an inverted trapezoid. Light with a large viewing angle (such as ±60° to ±90°) emitted by the light-emitting element composed of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 can be further reflected by the reflective electrode 3 covering the side walls of the first opening A, the second opening B, and the third opening D to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby further improving the light extraction efficiency of the light-emitting element.

[0103] In some embodiments, referring to Figure 2c , the included angle β between the side wall of the third opening D and the surface of the third sub-layer 23 close to the substrate 1 ranges from 30° to 60°. With such a setting, the reflective electrode 3 covering the side wall of the third opening D can reflect light with a large viewing angle (such as ±60° to ±70°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0104] In some embodiments, referring to Figure 2c , the first sub-layer 21 includes a first platform C. The surface of the first platform C facing away from the substrate 1 is located between the side walls of the second opening B and the first opening A, and the three are spliced in sequence; and / or, the second sub-layer 22 includes a second platform E. The surface of the second platform E facing away from the substrate 1 is located between the side walls of the third opening D and the second opening B, and the three are spliced in sequence; the reflective electrode 3 is located on the side of the third sub-layer 23 facing away from the substrate 1, and the orthographic projection of the reflective electrode 3 on the substrate 1 covers the orthographic projections of the first opening A, the first platform C, the second opening B, the second platform E, and the third opening D on the substrate 1.

[0105] Among them, the setting of the first platform C enables the reflective electrode 3 covering the surface of the first platform C facing away from the substrate 1 to further reflect the light reflected by the reflective electrode 3 covering the side wall of the second opening B to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element; the setting of the second platform E enables the reflective electrode 3 covering the surface of the second platform E facing away from the substrate 1 to further reflect the light reflected by the reflective electrode 3 covering the side wall of the third opening D to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element; thereby further improving the light extraction efficiency of the light-emitting element.

[0106] In some embodiments, referring to Figure 2a 、 Figure 2b and Figure 2c, the substrate 1 includes a base 10, a pixel circuit 11, and a first planar layer 12. The pixel circuit 11 and the first planar layer 12 are sequentially stacked on one side of the base 10 close to the first film layer 2; a first via 200 is formed in the first film layer 2, and the first via 200 also penetrates into the first planar layer 12, and the pixel circuit 11 is exposed at the first via 200; the reflective electrode 3 also extends into the first via 200 and is electrically connected to the pixel circuit 11; the display panel further includes a pixel defining layer 6 located on the side of the reflective electrode 3 away from the substrate 1. A fourth opening 60 is formed in the pixel defining layer 6, and the orthographic projection of the fourth opening 60 on the substrate 1 is located within the orthographic projection area of the first opening A on the substrate 1, and the reflective electrode 3 is exposed at the fourth opening 60.

[0107] In some embodiments, the first sub-layer 21 is reused as the second planar layer; the second sub-layer 22 is reused as the third planar layer (refer to Figure 2b ) or the spacer layer (refer to Figure 2a ).

[0108] Among them, the second planar layer, the third planar layer, and the spacer layer are all made of organic resin materials, and their thicknesses can be made relatively thick, so that the side wall areas of the first opening A and the second opening B are larger, and then the reflective electrode 3 covering the side walls of the first opening A and the second opening B can reflect the light with a larger viewing angle emitted by the light-emitting element to the light-emitting area within the smaller viewing angle range of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0109] In some embodiments, refer to Figure 2c , the first sub-layer 21 is reused as the second planar layer, the second sub-layer 22 is reused as the third planar layer, and the third sub-layer 23 is reused as the fourth planar layer or the spacer layer.

[0110] Among them, the second planar layer, the third planar layer, the fourth planar layer, and the spacer layer are all made of organic resin materials, and their thicknesses can be made relatively thick, so that the side wall areas of the first opening A, the second opening B, and the third opening D are larger, and then the reflective electrode 3 covering the side walls of the first opening A, the second opening B, and the third opening D can reflect the light with a larger viewing angle emitted by the light-emitting element to the light-emitting area within the smaller viewing angle range of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0111] The embodiments of the present disclosure also provide a display panel, refer to Figure 3a , Figure 3b and Figure 3c, wherein, the display panel includes a substrate 1, a first film layer 2 located on one side of the substrate 1, and at least two cup-shaped structures 20 are formed in the first film layer 2 in a direction away from the substrate 1; along the direction close to the substrate 1, the radial dimensions of the at least two cup-shaped structures 20 gradually increase, and the radial dimension of each cup-shaped structure 20 gradually increases; along the direction close to the substrate 1, the positive projection of the cup-shaped structure 20 closer to the substrate 1 among any two adjacent cup-shaped structures 20 on the substrate 1 covers the positive projection of the cup-shaped structure 20 farther from the substrate 1 on the substrate 1; a reflective electrode 3 located on the side of the first film layer 2 facing away from the substrate 1, and its positive projection on the substrate 1 covers at least the bottom of the cup-shaped structure 20 with the smallest radial dimension and the side walls of all cup-shaped structures 20; a light-emitting functional layer 4 located on the side of the reflective electrode 3 close to the substrate 1 and in contact with the reflective electrode 3; a first electrode 5 located on the side of the light-emitting functional layer 4 close to the substrate 1 and in contact with the light-emitting functional layer 4, and the positive projection of the first electrode 5 on the substrate 1 covers at least the positive projection of the light-emitting functional layer 4 on the substrate 1.

[0112] In this embodiment, the reflective electrode 3 serves as the cathode of the light-emitting element, and can be patterned or set as a whole surface, that is, the cathode covers the substrate 1 as a whole surface. The first electrode 5 serves as the anode of the light-emitting element and needs to be patterned. In this embodiment, the reflective electrode 3 is made of an opaque metal or metal alloy material, and the first electrode 5 is made of a light-transmissive conductive material or a partially light-transmissive conductive material. The light-emitting element in this embodiment is a bottom-emitting type.

[0113] In this embodiment, by forming at least two cup-shaped structures 20 in the first film layer 2 in a direction away from the substrate 1; along the direction close to the substrate 1, the radial dimensions of the at least two cup-shaped structures 20 gradually increase, and the radial dimension of each cup-shaped structure 20 gradually increases; along the direction close to the substrate 1, the positive projection of the cup-shaped structure 20 closer to the substrate 1 among any two adjacent cup-shaped structures 20 on the substrate 1 covers the positive projection of the cup-shaped structure 20 farther from the substrate 1 on the substrate 1; the light emitted by the light-emitting functional layer 4 under the electric field action of the reflective electrode 3 and the first electrode 5 can be reflected by the reflective electrode 3 to the light-emitting area within the set viewing angle range of the light-emitting element. Compared with the structure in the related art where the light-emitting element is arranged in a single cup-shaped opening, in this embodiment, the light-emitting element is located at the bottoms of at least two cup-shaped structures 20. Along the direction close to the substrate 1, the reflective electrode 3 covering the side walls of the cup-shaped structure 20 with a larger radial dimension can reflect the light with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light-emitting efficiency of the light-emitting element, and further being beneficial to improving the lifespan of the display panel and reducing the power consumption of the display panel.

[0114] In some embodiments, referring to Figure 3a andFigure 3b , the first film layer 2 includes a first sub-layer 21 and a second sub-layer 22. The first sub-layer 21 and the second sub-layer 22 are stacked in sequence in a direction away from the substrate 1. The cup-shaped structure 20 includes a first protrusion F and a second protrusion G. The first protrusion F is located in the first sub-layer 21, and the second protrusion G is located in the second sub-layer 22. The cross-sectional shape of the first protrusion F perpendicular to the substrate 1 includes a trapezoid. The reflective electrode 3 is located on the side of the second sub-layer 22 away from the substrate 1. The orthographic projection of the reflective electrode 3 on the substrate 1 covers the orthographic projections of the first protrusion F and the second protrusion G on the substrate 1. The shape of the side of the second protrusion G away from the substrate 1 is adapted to the shape of the side of the first protrusion F away from the substrate 1. The shape of the side of the reflective electrode 3 away from the substrate 1 is adapted to the shape of the side of the second protrusion G away from the substrate 1.

[0115] Among them, the total thickness of the overlapping area of the orthographic projections of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 is less than the thickness of the second sub-layer 22. By making the cross-sectional shape of the first protrusion F perpendicular to the substrate 1 be a trapezoid, and the shape of the side of the second protrusion G away from the substrate 1 be adapted to the shape of the side of the first protrusion F away from the substrate 1, and the shape of the side of the reflective electrode 3 away from the substrate 1 be adapted to the shape of the side of the second protrusion G away from the substrate 1, the light with a large viewing angle (such as ±60° to ±90°) emitted by the light-emitting element composed of the stacked reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 can be reflected by the reflective electrode 3 covering the side wall of the slope of the second protrusion G away from the first protrusion F to the light-emitting area within a small viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0116] In some embodiments, referring to Figure 3c , the first film layer 2 includes a first sub-layer 21, a second sub-layer 22, and a third sub-layer 23. The first sub-layer 21, the third sub-layer 23, and the second sub-layer 22 are stacked in sequence in a direction away from the substrate 1. The cup-shaped structure 20 includes a first protrusion F, a second protrusion G, and a third protrusion H. The first protrusion F is located in the first sub-layer 21, the second protrusion G is located in the second sub-layer 22, and the third protrusion H is located in the third sub-layer 23. The cross-sectional shape of the first protrusion F perpendicular to the substrate 1 includes a trapezoid, and the cross-sectional shape of the third protrusion H perpendicular to the substrate 1 includes a trapezoid. The orthographic projection of the third protrusion H on the substrate 1 is located within the orthographic projection of the first protrusion F on the substrate 1. The reflective electrode 3 is located on the side of the second sub-layer 22 away from the substrate 1. The orthographic projection of the reflective electrode 3 on the substrate 1 covers the orthographic projections of the second protrusion G, the third protrusion H, and the first protrusion F on the substrate 1. The shape of the side of the third protrusion H away from the substrate 1, the shape of the side of the part of the first protrusion F that does not overlap with the orthographic projection of the third protrusion H on the substrate 1 away from the substrate 1, and the shape of the second protrusion G are adapted. The shape of the side of the reflective electrode 3 away from the substrate 1 is adapted to the shape of the side of the second protrusion G away from the substrate 1.

[0117] By making the cross-sectional shape of the first protrusion F perpendicular to the substrate 1 trapezoidal, the cross-sectional shape of the third protrusion H perpendicular to the substrate 1 trapezoidal, and the shape of the side of the third protrusion H facing away from the substrate 1, the side of the first protrusion F that does not overlap with the third protrusion H in the orthographic projection on the substrate 1 and faces away from the substrate 1 is adapted to the shape of the second protrusion G; the reflective electrode 3 and the side of the second protrusion G facing away from the substrate 1 are adapted in shape, and light rays with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element formed by stacking the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 can pass through the reflective electrode 3 covering the side wall of the slope of the second protrusion G facing away from the third protrusion H and the reflective electrode 3 covering the side wall of the slope of the second protrusion G facing away from the first protrusion F and be reflected to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby further improving the light extraction efficiency of the light-emitting element.

[0118] In some embodiments, referring to Figure 3c , the orthographic projection area of the surface of the third protrusion H close to the substrate 1 on the substrate 1 is smaller than the orthographic projection area of the surface of the first protrusion F away from the substrate 1 on the substrate 1.

[0119] With such a setting, the peripheral region I of the surface of the first protrusion F away from the substrate 1 is connected between the slope side surface of the third protrusion H and the slope side surface of the first protrusion F, so that the reflective electrode 3 covering the side of the second protrusion G facing away from the first protrusion F in this peripheral region I can further reflect the light reflected by the reflective electrode 3 covering the side wall of the slope of the second protrusion G facing away from the first protrusion F to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element; thereby further improving the light extraction efficiency of the light-emitting element.

[0120] In some embodiments, referring to Figure 3a , Figure 3b and Figure 3c , the angle range of the base angle γ of the first protrusion F is 20° to 60°; the angle range of the base angle δ of the third protrusion H is 30° to 60°.

[0121] With such a setting, the reflective electrode 3 covering the side wall of the slope of the second protrusion G facing away from the third protrusion H can reflect light rays with a larger viewing angle (such as ±60° to ±70°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element; the reflective electrode covering the side wall of the slope of the second protrusion G facing away from the first protrusion F can reflect light rays with an even larger viewing angle (such as ±70° to ±90°) to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0122] In some embodiments, referring to Figure 3aand Figure 3b The second sublayer 22 is reused as a pixel defining layer, a fourth opening 60 is opened in the second raised portion G, the orthographic projection of the fourth opening 60 on the substrate 1 is located within the orthographic projection area of ​​the first raised portion F on the substrate 1, the first electrode 5 is located between the first sublayer 21 and the second sublayer 22, and the orthographic projection of the first electrode 5 on the substrate 1 covers the orthographic projection of the first raised portion F on the substrate 1; the first electrode 5 is exposed at the fourth opening 60; the light-emitting functional layer 4 is located in the fourth opening 60.

[0123] In some embodiments, reference Figure 3a and Figure 3b The substrate 1 includes a base 10, a pixel circuit 11 and a first flat layer 12, and the pixel circuit 11 and the first flat layer 12 are stacked in sequence on a side of the base 10 close to the first film layer 2; a first via hole 200 is opened in the first sublayer 21, and the first via hole 200 also penetrates into the first flat layer 12, and the pixel circuit 11 is exposed at the first via hole 200; the first electrode 5 also extends into the first via hole 200 and is electrically connected to the pixel circuit 11; the first sublayer 21 is reused as the second flat layer.

[0124] Among them, the second flat layer is made of organic resin material, and its thickness can be made thicker, so that the slope side wall area of ​​the first protrusion F is larger, and then the reflective electrode 3 covering the side of the slope side wall of the second protrusion G away from the first protrusion F can reflect the light with a larger viewing angle emitted by the light-emitting element to the light-emitting area with a smaller viewing angle range of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0125] In some embodiments, reference Figure 3a The first via hole 200 and the first protrusion F are arranged at intervals, so that the pixel circuit 11 can better avoid blocking the light emitted by the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0126] In some embodiments, reference Figure 3b , the side wall of the first via hole 200 close to the first protrusion F reuses the corresponding side slope side wall of the first protrusion F. In this way, the distance between the first via hole 200 and the first protrusion F is less than Figure 3a The distance between the first via hole 200 and the first protrusion F in FIG.

[0127] In some embodiments, reference Figure 3c, the second sub-layer 22 is reused as a pixel defining layer. A fourth opening 60 is formed in the second protrusion G. The orthographic projection of the fourth opening 60 on the substrate 1 is located within the overlapping region of the orthographic projections of the first protrusion F and the third protrusion H on the substrate 1. The first electrode 5 is located between the third sub-layer 23 and the second sub-layer 22, and the orthographic projection of the first electrode 5 on the substrate 1 covers the orthographic projections of the first protrusion F and the third protrusion H on the substrate 1; the first electrode 5 is exposed at the fourth opening 60; the light-emitting functional layer 4 is located in the fourth opening 60.

[0128] In some embodiments, referring to Figure 3c , the substrate 1 includes a substrate 10, a pixel circuit 11, and a first planarization layer 12. The pixel circuit 11 and the first planarization layer 12 are sequentially stacked on one side of the substrate 10 close to the first film layer 2; a first via 200 is formed in the third sub-layer 23, and the first via 200 also penetrates through to the first sub-layer 21 and the first planarization layer 12, and the pixel circuit 11 is exposed at the first via 200; the first electrode 5 also extends into the first via 200 and is electrically connected to the pixel circuit 11; the first sub-layer 21 is reused as a second planarization layer; the third sub-layer 23 is reused as a third planarization layer or a spacer layer.

[0129] Among them, the second planarization layer, the third planarization layer, and the spacer layer are all made of an organic resin material, and their thickness can be made relatively thick, so that the slope sidewall areas of the first protrusion F and the third protrusion H are relatively large. Furthermore, the reflective electrodes 3 covering the sidewall of the second protrusion G facing away from the slope sidewall of the first protrusion F and the reflective electrodes 3 covering the sidewall of the second protrusion G facing away from the slope sidewall of the third protrusion H can reflect the light emitted by the light-emitting element within a larger viewing angle range to the light-emitting area within a smaller viewing angle range of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element.

[0130] In some embodiments, the pixel circuit 11 may include a plurality of transistors and at least one capacitor. The transistor includes a driving transistor J, and the driving transistor J includes an active layer 110, a first gate insulating layer 111, a gate 112, a second gate insulating layer 113, a source 114, and a drain 115 that are sequentially stacked on one side of the substrate 10, and the source 114 and the drain 115 are located in the same layer. The pixel circuit 11 further includes a transfer electrode 116 provided on the side of the driving transistor J facing away from the substrate 10. A fifth planarization layer 117 is provided between the transfer electrode 116 and the source 114 and the drain 115, and the first planarization layer 12 is located on the side of the transfer electrode 116 facing away from the substrate 10. Referring to Figures 2a - 2c , the reflective electrode 3 is electrically connected to the transfer electrode 116 through the first via 200. Referring to Figures 3a - 3c , the first electrode 5 is electrically connected to the transfer electrode 116 through the first via 200.

[0131] The display panel provided by the embodiments of the present disclosure forms at least two cup-shaped structures in the first film layer in a direction away from the substrate; in a direction away from or close to the substrate, the radial dimensions of the at least two cup-shaped structures gradually increase, and the radial dimension of each cup-shaped structure gradually increases; in a direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure closer to the substrate on the substrate; or, in a direction close to the substrate, the orthographic projection of the cup-shaped structure closer to the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure farther from the substrate on the substrate; the light emitted by the light-emitting functional layer under the electric field action of the reflective electrode and the first electrode can be reflected by the reflective electrode to the light-emitting area within the set viewing angle range of the light-emitting element. Compared with the structure in the related art where the light-emitting element is disposed in a single cup-shaped opening, in this embodiment, the light-emitting element is located at the bottoms of at least two cup-shaped structures. In a direction away from or close to the substrate, the reflective electrode covering the cup sidewalls of the cup-shaped structure with a larger radial dimension can reflect the light with a larger viewing angle (such as ±60° to ±90°) emitted by the light-emitting element to the light-emitting area within a smaller viewing angle range (such as 0° to ±60°) of the light-emitting element, thereby improving the light extraction efficiency of the light-emitting element, and further being beneficial to improving the lifespan of the display panel and reducing the power consumption of the display panel.

[0132] In a second aspect, the embodiments of the present disclosure further provide a display device, including the display panel in the above embodiments.

[0133] By adopting the display panel in the above embodiments, the light extraction efficiency of the display device is improved, which is beneficial to improving the lifespan of the display device and reducing the power consumption of the display device.

[0134] The display device provided by the embodiments of the present disclosure can be any product or component with a display function, such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, a navigator, etc.

[0135] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A display panel, wherein: Including substrate, A first film layer, located on one side of the substrate, wherein at least two cup-shaped structures are formed in the first film layer in a direction away from the substrate; Along the direction away from or approaching the substrate, the radial dimensions of the at least two cup-shaped structures gradually increase, and the radial dimension of each of the cup-shaped structures gradually increases; Along the direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure closer to the substrate on the substrate; Alternatively, along the direction approaching the substrate, the orthographic projection of the cup-shaped structure closer to the substrate among any two adjacent cup-shaped structures on the substrate covers the orthographic projection of the cup-shaped structure farther from the substrate on the substrate; a reflective electrode, located on a side of the first film layer away from the substrate, and having an orthographic projection on the substrate covering at least the cup bottom of the cup-shaped structure with the smallest radial dimension and all cup side walls of the cup-shaped structure; a light-emitting functional layer, located on a side of the reflective electrode away from or close to the substrate, and in contact with the reflective electrode; The first electrode is located on a side of the light-emitting functional layer away from or close to the substrate and contacts the light-emitting functional layer, and the orthographic projection of the first electrode on the substrate at least covers the orthographic projection of the light-emitting functional layer on the substrate.

2. The display panel according to claim 1, wherein: The first film layer includes a first sublayer and a second sublayer, The first sub-layer and the second sub-layer are stacked in sequence in a direction away from the substrate, The cup-shaped structure includes a first opening opened in the first sublayer and a second opening opened in the second sublayer; The radial dimension of the second opening is greater than the radial dimension of the first opening; Along the direction away from the substrate, the radial size of the first opening gradually increases, and the radial size of the second opening gradually increases; An orthographic projection of the second opening on the substrate covers an orthographic projection of the first opening on the substrate.

3. The display panel according to claim 2, wherein: The first film layer further includes a third sublayer located on a side of the second sublayer away from the first sublayer. The cup-shaped structure further includes a third opening opened in the third sublayer; The radial dimension of the third opening is greater than the radial dimension of the second opening; The radial dimension of the third opening gradually increases in a direction away from the substrate; The orthographic projection of the third opening on the substrate covers the orthographic projection of the second opening on the substrate.

4. The display panel according to claim 3, wherein: The angle between the side wall of the first opening and a surface of the first sub-layer close to the substrate is in the range of 20° to 60°.

5. The display panel according to claim 4, wherein: The angle between the side wall of the second opening and the surface of the second sub-layer close to the substrate is in the range of 30° to 60°.

6. The display panel according to claim 5, wherein: The angle between the side wall of the third opening and the surface of the third sub-layer close to the substrate is in the range of 30° to 60°.

7. The display panel according to claim 2, wherein: The first sub-layer includes a first platform, a surface of the first platform facing away from the substrate is located between the side wall of the second opening and the side wall of the first opening, and the three are spliced ​​in sequence; The reflective electrode is located on a side of the second sub-layer away from the substrate, and an orthographic projection of the reflective electrode on the substrate covers orthographic projections of the first opening, the first platform, and the second opening on the substrate.

8. The display panel according to claim 3, wherein: The first sub-layer includes a first platform, a surface of the first platform facing away from the substrate is located between the side wall of the second opening and the side wall of the first opening, and the three are spliced ​​in sequence; And / or, the second sub-layer includes a second platform, a surface of the second platform facing away from the substrate is located between a side wall of the third opening and a side wall of the second opening, and the three are spliced ​​in sequence; The reflective electrode is located on a side of the third sublayer away from the substrate, and an orthographic projection of the reflective electrode on the substrate covers orthographic projections of the first opening, the first platform, the second opening, the second platform, and the third opening on the substrate.

9. The display panel according to claim 7 or 8, wherein: The substrate comprises a base, a pixel circuit and a first flat layer, wherein the pixel circuit and the first flat layer are sequentially stacked on a side of the base close to the first film layer; A first via hole is formed in the first film layer, and the first via hole also penetrates into the first flat layer, and the pixel circuit is exposed at the first via hole; the reflective electrode also extends into the first via hole and is electrically connected to the pixel circuit; The display panel further includes a pixel defining layer located on a side of the reflective electrode away from the substrate, wherein a fourth opening is formed in the pixel defining layer. The orthographic projection of the fourth opening on the substrate is located within the orthographic projection area of ​​the first opening on the substrate, The reflective electrode is exposed at the fourth opening.

10. The display panel according to claim 2, wherein: The first sub-layer is reused as a second planar layer; The second sub-layer is reused as a third planar layer or a spacer layer.

11. The display panel according to claim 3, wherein: The first sub-layer is reused as a second planar layer, The second sub-layer is reused as a third flat layer, The third sub-layer is reused as a fourth planarizing layer or a spacer layer.

12. The display panel according to claim 1, wherein: The first film layer includes a first sublayer and a second sublayer, The first sub-layer and the second sub-layer are stacked in sequence in a direction away from the substrate, The cup-shaped structure comprises a first protrusion and a second protrusion, wherein the first protrusion is located on the first sub-layer and the second protrusion is located on the second sub-layer; The cross-sectional shape of the first protrusion perpendicular to the substrate includes a trapezoid. The reflective electrode is located on a side of the second sub-layer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the first convex portion and the second convex portion on the substrate; The second protrusion is adapted in shape to a side of the first protrusion facing away from the substrate; The reflective electrode and a side of the second protrusion facing away from the substrate are matched in shape.

13. The display panel according to claim 1, wherein: The first film layer includes a first sublayer, a second sublayer and a third sublayer, and the first sublayer, the third sublayer and the second sublayer are stacked in sequence in a direction away from the substrate; The cup-shaped structure comprises a first protrusion, a second protrusion and a third protrusion, wherein the first protrusion is located on the first sub-layer, the second protrusion is located on the second sub-layer, and the third protrusion is located on the third sub-layer; The cross-sectional shape of the first protrusion perpendicular to the substrate includes a trapezoid, and the cross-sectional shape of the third protrusion perpendicular to the substrate includes a trapezoid, The orthographic projection of the third protrusion on the substrate is located within the orthographic projection of the first protrusion on the substrate; The reflective electrode is located on a side of the second sub-layer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the second convex portion, the third convex portion and the first convex portion on the substrate; The side of the third protrusion facing away from the substrate, the side of the portion of the first protrusion that does not overlap with the orthographic projection of the third protrusion on the substrate facing away from the substrate, and the second protrusion are adapted in shape; The reflective electrode and a side of the second protrusion facing away from the substrate are matched in shape.

14. The display panel according to claim 13, wherein: An orthographic projection area of ​​a surface of a side of the third protrusion close to the substrate on the substrate is smaller than an orthographic projection area of ​​a surface of a side of the first protrusion away from the substrate on the substrate.

15. The display panel according to claim 13, wherein: The bottom angle of the first protrusion is in the range of 20° to 60°; The bottom angle of the third protrusion is in the range of 30° to 60°.

16. The display panel according to claim 12, wherein: The second sublayer is reused as a pixel definition layer, A fourth opening is formed in the second protruding portion, and an orthographic projection of the fourth opening on the substrate is located within an orthographic projection region of the first protruding portion on the substrate. The first electrode is located between the first sub-layer and the second sub-layer, and the orthographic projection of the first electrode on the substrate covers the orthographic projection of the first protrusion on the substrate; The first electrode is exposed at the fourth opening; The light-emitting functional layer is located in the fourth opening.

17. The display panel according to claim 13, wherein: The second sublayer is reused as a pixel definition layer, A fourth opening is formed in the second protruding portion, and an orthographic projection of the fourth opening on the substrate is located in an overlapping region of orthographic projections of the first protruding portion and the third protruding portion on the substrate. The first electrode is located between the third sub-layer and the second sub-layer, and the orthographic projection of the first electrode on the substrate covers the orthographic projections of the first convex portion and the third convex portion on the substrate; The first electrode is exposed at the fourth opening; The light-emitting functional layer is located in the fourth opening.

18. The display panel according to claim 16, wherein: The substrate comprises a base, a pixel circuit and a first flat layer, wherein the pixel circuit and the first flat layer are sequentially stacked on a side of the base close to the first film layer; A first via hole is provided in the first sublayer, and the first via hole also penetrates into the first flat layer, and the pixel circuit is exposed at the first via hole; the first electrode also extends into the first via hole and is electrically connected to the pixel circuit; The first sub-layer is reused as a second planar layer.

19. The display panel according to claim 17, wherein: The substrate comprises a base, a pixel circuit and a first flat layer, wherein the pixel circuit and the first flat layer are sequentially stacked on a side of the base close to the first film layer; A first via hole is formed in the third sub-layer, and the first via hole also penetrates the first sub-layer and the first flat layer, and the pixel circuit is exposed at the first via hole; the first electrode also extends into the first via hole and is electrically connected to the pixel circuit; The first sub-layer is reused as a second planar layer; The third sub-layer is reused as a third planar layer or a spacer layer.

20. A display device, wherein: A display panel comprising any one of claims 1-19.

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