Display panel and display apparatus

Abstract

A display panel and a display apparatus. The display panel comprises a substrate, a first film layer located on a side of the substrate, and at least two cup-shaped structures formed in the first film layer in a direction away from the substrate; in a direction away from or close to the substrate, a radial dimension of the at least two cup-shaped structures gradually increases, and a radial dimension of each cup-shaped structure gradually increases; and in a direction away from the substrate, among any two adjacent cup-shaped structures, the cup-shaped structure farther away from the substrate covers the cup-shaped structure closer to the substrate; or, in a direction close to the substrate, among any two adjacent cup-shaped structures, the cup-shaped structure closer to the substrate covers the cup-shaped structure farther away from the substrate; a reflective electrode, located on a side of the first film layer facing away from the substrate and at least covering a cup bottom of the cup-shaped structure with a smallest radial dimension and cup side walls of all cup-shaped structures; a light-emitting functional layer, located on a side of the reflective electrode facing away from or close to the substrate; and a first electrode, located on a side of the light-emitting functional layer facing away from or close to the substrate.

Description

Display panel and display device Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays have attracted widespread attention due to their advantages such as self-illumination, low power consumption, thinness, flexibility, vibrant colors, high contrast, and fast response speed. Summary of the Invention

[0003] In a first aspect, embodiments of this disclosure provide a display panel, which includes a substrate.

[0004] A first film layer is located on one side of the substrate, and 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 towards 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;

[0006] Along a direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures overlaps the orthographic projection of the cup-shaped structure closer to the substrate on the substrate.

[0007] Alternatively, along the direction close to the substrate, the orthographic projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures overlaps the orthographic projection of the cup-shaped structure farther from the substrate on the substrate.

[0008] The reflective electrode is located on the side of the first film layer opposite to the substrate, and its orthogonal projection on the substrate covers at least the bottom of the cup-shaped structure with the smallest radial dimension and all the sidewalls of the cup-shaped structure.

[0009] The light-emitting functional layer is located on the side of the reflective electrode that is opposite to or close to the substrate, and is in contact with the reflective electrode;

[0010] The first electrode is located on the side of the light-emitting functional layer opposite to or close to the substrate and is in contact with the light-emitting functional layer. The orthogonal projection of the first electrode on the substrate at least covers the orthogonal 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 sublayer and the second sublayer are stacked sequentially in a direction away from the substrate.

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

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

[0015] Along 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 overlaps the orthographic projection of the first opening on the substrate.

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

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

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

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

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

[0022] In some embodiments, the included angle between the sidewall of the first opening and the side surface of the first sublayer near the substrate ranges from 20° to 60°.

[0023] In some embodiments, the included angle between the sidewall of the second opening and the side surface of the second sublayer near the substrate ranges from 30° to 60°.

[0024] In some embodiments, the included angle between the sidewall of the third opening and the side surface of the third sublayer near the substrate ranges from 30° to 60°.

[0025] In some embodiments, the first sublayer includes a first platform, the side surface of the first platform facing away from the substrate being located between the sidewall of the second opening and the sidewall of the first opening, and the three are sequentially spliced ​​together.

[0026] The reflective electrode is located on the side of the second sublayer facing 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 sublayer includes a first platform, the side surface of the first platform facing away from the substrate being located between the sidewall of the second opening and the sidewall of the first opening, and the three are sequentially spliced ​​together.

[0028] And / or, the second sublayer includes a second platform, the side surface of the second platform facing away from the substrate being located between the sidewall of the third opening and the sidewall of the second opening, and the three are sequentially spliced ​​together;

[0029] The reflective electrode is located on the side of the third sublayer facing 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, the second opening, the second platform, and the third opening on the substrate.

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

[0031] A first via is formed in the first film layer, and the first via extends into the first planarization layer. The pixel circuit is exposed at the first via. The reflective electrode 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 the side of the reflective electrode facing away from the substrate, and the pixel defining layer has a fourth opening.

[0033] The orthographic projection of the fourth opening on the substrate is located within the orthographic 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 multiplexed as a second planarization layer;

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

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

[0038] The second sublayer is reused as the third planarization layer.

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

[0040] In some embodiments, the first film layer includes a first sublayer and a second sublayer.

[0041] The first sublayer and the second sublayer are stacked sequentially in a direction away from the substrate.

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

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

[0044] The reflective electrode is located on the side of the second sublayer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the first protrusion and the second protrusion on the substrate.

[0045] The second protrusion and the side of the first protrusion facing away from the substrate are adapted in shape;

[0046] The shape of the reflective electrode and the side of the second protrusion facing away from the substrate are adapted to each other.

[0047] In some embodiments, the first film layer includes a first sublayer, a second sublayer, and a third sublayer, wherein the first sublayer, the third sublayer, and the second sublayer are stacked sequentially along a direction away from the substrate;

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

[0049] The first protrusion has a trapezoidal cross-sectional shape perpendicular to the substrate, and the third protrusion also has a trapezoidal cross-sectional shape perpendicular to the substrate.

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

[0051] The reflective electrode is located on the side of the second sub-layer opposite to the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the second protrusion, the third protrusion, and the first protrusion on the substrate.

[0052] The shape of the third protrusion is adapted to the side of the substrate away from the substrate, the side of the first protrusion away from the substrate from which the orthographic projection of the third protrusion on the substrate does not overlap, and the shape of the second protrusion.

[0053] The shape of the reflective electrode and the side of the second protrusion facing away from the substrate are adapted to each other.

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

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

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

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

[0058] The second protrusion has a fourth opening, 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 delimiting layer.

[0063] The second protrusion has a fourth opening, 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 planarization layer, wherein the pixel circuit and the first planarization layer are stacked sequentially on the side of the substrate closest to the first film layer;

[0068] A first via is provided in the first sub-layer, and the first via also extends into the first planarization layer, where the pixel circuit is exposed; the first electrode also extends into the first via and is electrically connected to the pixel circuit.

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

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

[0071] A first via is provided in the third sub-layer, and the first via also extends through the first sub-layer and the first planarization layer. 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 sublayer is reused as the second planarization layer;

[0073] The third sublayer is reused as a third flattening layer or a spacer layer.

[0074] Secondly, embodiments of this disclosure also provide a display device, which includes the aforementioned display panel.

[0075] The display panel provided in this embodiment of the present disclosure comprises at least two cup-shaped structures formed in a first film layer in a direction away from the substrate; the radial dimensions of the at least two cup-shaped structures gradually increase in a direction away from or near the substrate, and the radial dimension of each cup-shaped structure gradually increases; in a direction away from the substrate, the orthogonal projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures overlaps the orthogonal projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures; or, in a direction near the substrate, the orthogonal projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures overlaps the orthogonal projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures; the light-emitting functional layer is located between the reflective electrode and the first electrode. The light emitted under the electric field of the 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 technology where the light-emitting element is placed 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. Along the direction away from or close to the substrate, the reflective electrode covering the side wall of the cup-shaped structure with a larger radial dimension can reflect the light emitted by the light-emitting element at a larger viewing angle (e.g., ±60° to ±90°) to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element, thereby improving the light-emitting efficiency of the light-emitting element, which in turn helps to improve the lifespan of the display panel and reduce the power consumption of the display panel.

[0076] The display device provided in this disclosure improves the light emission efficiency of the display device by employing the above-described display panel, thereby improving the lifespan of the display device and reducing its power consumption. Attached Figure Description

[0077] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0078] Figure 1 is a schematic diagram of light emission in a related technology where the light-emitting element is placed in a reflective cup structure.

[0079] Figure 2a is a partial cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0080] Figure 2b is a partial cross-sectional view of another display panel in an embodiment of this disclosure.

[0081] Figure 2c is a partial cross-sectional view of another display panel in an embodiment of this disclosure.

[0082] Figure 3a is a partial cross-sectional view of another display panel in an embodiment of this disclosure.

[0083] Figure 3b is a partial cross-sectional view of another display panel in an embodiment of this disclosure.

[0084] Figure 3c is a partial cross-sectional view of another display panel in an embodiment of this disclosure. Detailed Implementation

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

[0086] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0087] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0088] The increasing demand for long lifespan and low power consumption in mobile phones, laptops, and other foldable display products makes it difficult for display products composed of a single OLED light-emitting element to meet these requirements. Display products using a stacked structure (i.e., multiple organic light-emitting functional layers stacked) light-emitting element can meet these requirements, but this will increase the manufacturing cost of the light-emitting devices in the display product.

[0089] In related technologies, to meet the requirements of long lifespan and low power consumption of display products, a reflective cup structure has been designed to improve the light emission efficiency of the light-emitting element. Referring to Figure 1, taking a top-emitting OLED light-emitting element as an example, a planarization layer 7 is added to one side of the substrate 1. A cup-shaped opening 70 is formed in the planarization layer 7. A pixel defining layer 6 is also provided on the side of the planarization layer 7 facing away from the substrate 1. The pixel defining layer 6 has a fourth opening 60 at the 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. The 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 stacked sequentially on the substrate 1. The anode 81 serves as a reflective electrode, capable of reflecting the light emitted by the light-emitting element 8 towards the display side. As can be seen from Figure 1, the anode 81 covers the bottom and sidewalls of the cup-shaped opening 70. The anode 81 film layer covering the sidewalls of the cup-shaped opening 70 can reflect some of the light emitted by the light-emitting element 8 from a large viewing angle (such as ±60° to ±90°) to the light-emitting area of ​​the light-emitting element 8 within a smaller viewing angle range (such as 0° to ±60°), thereby improving the light-emitting efficiency of the light-emitting element 8.

[0090] However, with the structure that places the light-emitting element 8 in a single cup-shaped opening 70, a significant portion of the wide-viewing-angle light L emitted by the light-emitting element 8 still cannot be utilized, thus failing to adequately meet the requirements for long lifespan and low power consumption of display products.

[0091] To address the problems in the related technologies, in a first aspect, embodiments of this disclosure provide a display panel. Referring to Figures 2a, 2b, and 2c, 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 formed in the first film layer 2 along 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, in any two adjacent cup-shaped structures 20, the cup-shaped structure 20 farther from the substrate 1 has a positive... The projection covers the orthographic projection of the cup-shaped structure 20 closer to the substrate 1 onto the substrate 1; the reflective electrode 3 is located on the side of the first film layer 2 away from the substrate 1, and its orthographic 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; the light-emitting functional layer 4 is located on the side of the reflective electrode 3 away from the substrate 1 and is in contact with the reflective electrode 3; the first electrode 5 is located on the side of the light-emitting functional layer 4 away from the substrate 1 and is in contact with the light-emitting functional layer 4, and the orthographic projection of the first electrode 5 on the substrate 1 covers at least the orthographic projection of the light-emitting functional layer 4 on the substrate 1.

[0092] The light-emitting functional layer 4 can be a single-layer organic electroluminescent material layer, a multilayer 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 sequentially and in contact with each other to form a single-layer or multilayer OLED light-emitting element, 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 formed entirely, i.e., the cathode completely covers the substrate 1. In this embodiment, the reflective electrode 3 is made of opaque metal or metal alloy, and the first electrode 5 is made of a light-transmitting conductive material or a partially light-transmitting conductive material. In this embodiment, the light-emitting element 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; the radial dimensions of the at least two cup-shaped structures 20 gradually increase in the direction away from the substrate 1, and the radial dimension of each cup-shaped structure 20 gradually increases; in the direction away from the substrate 1, the orthographic projection of the cup-shaped structure 20 farther from the substrate 1 in any two adjacent cup-shaped structures 20 overlaps the orthographic projection of the cup-shaped structure 20 closer to the substrate 1; the light emitted by the light-emitting functional layer 4 under the electric field of the reflective electrode 3 and the first electrode 5 can be reflected by the reflective electrode 3 to the light-emitting element. By defining the light-emitting area within the viewing angle range, compared to the structure in related technologies where the light-emitting element is placed 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. Along the direction away from the substrate 1, the reflective electrode 3 covering the cup sidewall of the cup-shaped structure 20 with a larger radial dimension can reflect the light emitted by the light-emitting element from a larger viewing angle (e.g., ±60° to ±90°) to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light-emitting efficiency of the light-emitting element, which in turn helps to improve the lifespan of the display panel and reduce the power consumption of the display panel.

[0095] In some embodiments, referring to Figures 2a and 2b, the first film layer 2 includes a first sublayer 21 and a second sublayer 22, the first sublayer 21 and the second sublayer 22 being stacked sequentially in a direction away from the substrate 1, and the cup-shaped structure 20 including a first opening A in the first sublayer 21 and a second opening B in the second sublayer 22; the radial dimension of the second opening B is greater than the radial dimension of the first opening A; in a 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 orthographic projection of the second opening B on the substrate 1 covers the orthographic projection of the first opening A on the substrate 1.

[0096] The first opening A, perpendicular to the substrate 1, has an inverted trapezoidal cross-sectional shape, and the second opening B, perpendicular to the substrate 1, also has an inverted trapezoidal cross-sectional shape. 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 first sub-layer 21. With this configuration, light emitted from the light-emitting element, which is composed of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5, at a larger viewing angle (e.g., ±60° to ±90°), can be reflected by the reflective electrode 3 covering the sidewalls of the first opening A and the second opening B to the light-emitting element's smaller viewing angle range (e.g., 0° to ±60°), 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 sublayer 21 near the substrate 1 ranges from 20° to 60°. With this configuration, the reflective electrode 3 covering the sidewall of the first opening A can reflect light with a wider viewing angle (e.g., ±70° to ±90°) to the light-emitting area of ​​the light-emitting element within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light-emitting 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 sublayer 22 near the substrate 1 ranges from 30° to 60°. With this configuration, the reflective electrode 3 covering the sidewall of the second opening B can reflect light with a larger viewing angle (e.g., ±60° to ±70°) to the light-emitting area of ​​the light-emitting element within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light-emitting efficiency of the light-emitting element.

[0099] In some embodiments, referring to Figures 2a and 2b, the first sublayer 21 includes a first platform C, the side surface of the first platform C facing away from the substrate 1 is located between the sidewall of the second opening B and the sidewall of the first opening A, and the three are sequentially spliced ​​together; the reflective electrode 3 is located on the side of the second sublayer 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] The first platform C is configured such that the reflective electrode 3 covering the surface of the first platform C away from the substrate 1 can 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-emitting efficiency of the light-emitting element.

[0101] In some embodiments, referring to FIG2c, based on the panel structure shown in FIG2a or FIG2b, the first film layer 2 further includes a third sub-layer 23 located on the side of the second sub-layer 22 away from the first sub-layer 21, and the cup-shaped structure 20 further includes a third opening D formed in the third sub-layer 23; the radial dimension of the third opening D is greater than the radial dimension of the second opening B; the radial dimension of the third opening D gradually increases along the direction away from the substrate 1; the orthographic projection of the third opening D on the substrate 1 covers the orthographic projection of the second opening B on the substrate 1.

[0102] The cross-sectional shape of the third opening D, perpendicular to the substrate 1, is an inverted trapezoid. The light emitted by the light-emitting element, which is composed of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 stacked together, has a larger viewing angle (e.g., ±60° to ±90°) and can be further reflected by the reflective electrode 3 covering the sidewalls of the first opening A, the second opening B, and the third opening D to the light-emitting area within the smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element, thereby further improving the light-emitting efficiency of the light-emitting element.

[0103] In some embodiments, referring to FIG2c, the included angle β between the sidewall of the third opening D and the surface of the third sublayer 23 near the substrate 1 ranges from 30° to 60°. With this configuration, the reflective electrode 3 covering the sidewall of the third opening D can reflect light with a larger viewing angle (e.g., ±60° to ±70°) to the light-emitting area of ​​the light-emitting element within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light-emitting efficiency of the light-emitting element.

[0104] In some embodiments, referring to FIG2c, the first sublayer 21 includes a first platform C, the side surface of the first platform C facing away from the substrate 1 is located between the sidewall of the second opening B and the sidewall of the first opening A, and the three are sequentially spliced ​​together; and / or, the second sublayer 22 includes a second platform E, the side surface of the second platform E facing away from the substrate 1 is located between the sidewall of the third opening D and the sidewall of the second opening B, and the three are sequentially spliced ​​together; the reflective electrode 3 is located on the side of the third sublayer 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] The first platform C is configured such that the reflective electrode 3 covering the surface of the first platform C facing away from the substrate 1 can 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 (e.g., 0° to ±60°) of the light-emitting element; the second platform E is configured such that the reflective electrode 3 covering the surface of the second platform E facing away from the substrate 1 can further reflect the light reflected by the reflective electrode 3 covering the sidewall of the third opening D to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element; thereby further improving the light-emitting efficiency of the light-emitting element.

[0106] In some embodiments, referring to Figures 2a, 2b, and 2c, the substrate 1 includes a base 10, a pixel circuit 11, and a first planarization layer 12. The pixel circuit 11 and the first planarization layer 12 are stacked sequentially on the side of the base 10 near the first film layer 2. A first via 200 is formed in the first film layer 2, and the first via 200 also extends into the first planarization layer 12. 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 also 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. 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. The reflective electrode 3 is exposed at the fourth opening 60.

[0107] In some embodiments, the first sublayer 21 is reused as a second planarization layer; the second sublayer 22 is reused as a third planarization layer (see Figure 2b) or a spacer layer (see Figure 2a).

[0108] The second planarization layer, the third planarization layer, and the spacer layer are all made of organic resin material, which can be made thicker, thereby making the sidewall area of ​​the first opening A and the second opening B larger. This allows the reflective electrode 3 covering the sidewall of the first opening A and the second opening B to reflect the light emitted by the light-emitting element from a larger angle to the light-emitting area of ​​the light-emitting element from a smaller angle, thereby improving the light-emitting efficiency of the light-emitting element.

[0109] In some embodiments, referring to FIG2c, the first sublayer 21 is reused as a second planarization layer, the second sublayer 22 is reused as a third planarization layer, and the third sublayer 23 is reused as a fourth planarization layer or a spacer layer.

[0110] The second planarization layer, the third planarization layer, the fourth planarization layer, and the spacer layer are all made of organic resin material, and their thickness can be made relatively thick, so that the sidewall area of ​​the first opening A, the second opening B, and the third opening D is larger. This allows the reflective electrode 3 covering the sidewall of the first opening A, the second opening B, and the third opening D to reflect the light emitted by the light-emitting element from a larger angle to the light-emitting area of ​​the light-emitting element from a smaller angle, thereby improving the light-emitting efficiency of the light-emitting element.

[0111] This disclosure also provides a display panel. Referring to Figures 3a, 3b, and 3c, the display panel includes a substrate 1 and a first film layer 2 located on one side of the substrate 1. At least two cup-shaped structures 20 are formed in the first film layer 2 in a direction away from the substrate 1. In a 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. In a direction close to the substrate 1, the orthographic projection of the cup-shaped structure 20 closer to the substrate 1 on the substrate 1 of any two adjacent cup-shaped structures 20 covers the one farther from the substrate. The cup-shaped structure 20 of the first film layer 2 is projected onto the substrate 1; the reflective electrode 3 is located on the side of the first film layer 2 away from the substrate 1, and its projection onto the substrate 1 covers at least the bottom of the cup-shaped structure 20 with the smallest radial dimension and the sidewalls of all cup-shaped structures 20; the light-emitting functional layer 4 is located on the side of the reflective electrode 3 near the substrate 1 and is in contact with the reflective electrode 3; the first electrode 5 is located on the side of the light-emitting functional layer 4 near the substrate 1 and is in contact with the light-emitting functional layer 4, and the projection of the first electrode 5 onto the substrate 1 covers at least the projection of the light-emitting functional layer 4 onto 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 formed entirely, meaning the cathode covers the entire substrate 1. The first electrode 5 serves as the anode of the light-emitting element and also needs to be patterned. In this embodiment, the reflective electrode 3 is made of opaque metal or a metal alloy, and the first electrode 5 is made of a light-transmitting conductive material or a partially light-transmitting conductive material. In this embodiment, the light-emitting element is a bottom-emitting type.

[0113] In this embodiment, at least two cup-shaped structures 20 are formed in the first film layer 2 in the direction away from the substrate 1; the radial dimensions of the at least two cup-shaped structures 20 gradually increase in the direction close to the substrate 1, and the radial dimension of each cup-shaped structure 20 gradually increases; in the direction close to the substrate 1, the orthographic projection of the cup-shaped structure 20 closer to the substrate 1 on the substrate 1 overlaps the orthographic 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 of the reflective electrode 3 and the first electrode 5 can be reflected by the reflective electrode 3 to the light-emitting element. By defining the light-emitting area within the viewing angle range, compared to the structure in related technologies where the light-emitting element is placed 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. Along the direction close to the substrate 1, the reflective electrode 3 covering the cup sidewall of the cup-shaped structure 20 with a larger radial dimension can reflect the light emitted by the light-emitting element from a larger viewing angle (e.g., ±60° to ±90°) to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light-emitting efficiency of the light-emitting element, which in turn helps to improve the lifespan of the display panel and reduce the power consumption of the display panel.

[0114] In some embodiments, referring to Figures 3a and 3b, the first film layer 2 includes a first sublayer 21 and a second sublayer 22, which are stacked sequentially in a direction away from the substrate 1. The cup-shaped structure 20 includes a first protrusion F and a second protrusion G, with the first protrusion F located in the first sublayer 21 and the second protrusion G located in the second sublayer 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 sublayer 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 shapes of the side of the second protrusion G away from the substrate 1 and the side of the first protrusion F away from the substrate 1 are adapted to each other. The shapes of the side of the reflective electrode 3 away from the substrate 1 and the side of the second protrusion G away from the substrate 1 are adapted to each other.

[0115] The total thickness of the overlapping area of ​​the orthographic projection 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 trapezoidal, and by matching the shape of the side of the second protrusion G and the side of the first protrusion F away from the substrate 1, and by matching the shape of the reflective electrode 3 and the side of the second protrusion G away from the substrate 1, the light emitted by the light-emitting element composed of the reflective electrode 3, the light-emitting functional layer 4, and the first electrode 5 with a larger viewing angle (e.g., ±60° to ±90°) can be reflected by the reflective electrode 3 covering the side of the second protrusion G away from the slope sidewall of the first protrusion F to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°), thereby improving the light extraction efficiency of the light-emitting element.

[0116] In some embodiments, referring to FIG3c, the first film layer 2 includes a first sublayer 21, a second sublayer 22, and a third sublayer 23, which are stacked sequentially 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, where the first protrusion F is located in the first sublayer 21, the second protrusion G is located in the second sublayer 22, and the third protrusion H is located in the third sublayer 23; the cross-sectional shape of the first protrusion F perpendicular to the substrate 1 is trapezoidal, and the cross-sectional shape of the third protrusion H perpendicular to the substrate 1 is trapezoidal. 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 sublayer 22 away from the substrate 1, and 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 side of the third protrusion H away from the substrate 1, the side of the first protrusion F that does not overlap with the orthographic projection of the third protrusion H on the substrate 1, and the shape of the second protrusion G are adapted to each other; the shapes of the reflective electrode 3 and the side of the second protrusion G away from the substrate 1 are adapted to each other.

[0117] By making the cross-sectional shape of the first protrusion F perpendicular to the substrate 1 trapezoidal, and the cross-sectional shape of the third protrusion H perpendicular to the substrate 1 trapezoidal, and by matching the shape of the side of the third protrusion H away from the substrate 1, the side of the first protrusion F and the third protrusion H that do not overlap on the substrate 1 with the shape of the second protrusion G; and by matching the shape of the reflective electrode 3 and the side of the second protrusion G away from the substrate 1, the light emitted by the light-emitting element composed of the reflective electrode 3, the light-emitting functional layer 4 and the first electrode 5 with a larger viewing angle (e.g., ±60° to ±90°) can be reflected by the reflective electrode 3 covering the side of the second protrusion G away from the slope sidewall of the third protrusion H and the side of the second protrusion G away from the slope sidewall of the first protrusion F to the light-emitting area within the smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element, thereby further improving the light-emitting efficiency of the light-emitting element.

[0118] In some embodiments, referring to FIG3c, the orthographic projection area of ​​the side surface of the third protrusion H near the substrate 1 on the substrate 1 is smaller than the orthographic projection area of ​​the side surface of the first protrusion F away from the substrate 1 on the substrate 1.

[0119] This configuration connects the peripheral region I of the side of the first protrusion F away from the substrate 1 to the sloping side of the third protrusion H and the sloping side of the first protrusion F. This allows the reflective electrode 3 covering the side of the second protrusion G away from the peripheral region I of the first protrusion F to further reflect the light reflected by the reflective electrode 3 covering the side of the second protrusion G away from the sloping sidewall of the first protrusion F to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element, thereby further improving the light-emitting efficiency of the light-emitting element.

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

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

[0122] In some embodiments, referring to Figures 3a and 3b, the second sub-layer 22 is reused as a pixel defining layer, a fourth opening 60 is provided in the second protrusion G, the orthographic projection of the fourth opening 60 on the substrate 1 is located in the orthographic projection area of ​​the first protrusion F on the substrate 1, the first electrode 5 is located between the first sub-layer 21 and the second sub-layer 22, and the orthographic projection of the first electrode 5 on the substrate 1 covers the orthographic projection of the first protrusion 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, referring to Figures 3a and 3b, 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 stacked sequentially on the side of the substrate 10 near the first film layer 2. A first via 200 is formed in the first sub-layer 21, and the first via 200 also extends into the first planarization layer 12. 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.

[0124] The second flat layer is made of organic resin material, which can be made thicker, so that the slope sidewall area of ​​the first protrusion F is larger. This allows the reflective electrode 3 covering the side of the second protrusion G away from the slope sidewall of the first protrusion F to reflect the light emitted by the light-emitting element from a larger angle to the light-emitting area of ​​the light-emitting element from a smaller angle, thereby improving the light-emitting efficiency of the light-emitting element.

[0125] In some embodiments, referring to FIG3a, the first via 200 and the first protrusion F are spaced apart, which can better avoid the pixel circuit 11 blocking the light emitted by the light-emitting element and improve the light emission efficiency of the light-emitting element.

[0126] In some embodiments, referring to FIG3b, the sidewall of the first through hole 200 near the first protrusion F reuses the corresponding side slope sidewall of the first protrusion F. Thus, the distance between the first through hole 200 and the first protrusion F is less than the distance between the first through hole 200 and the first protrusion F in FIG3a.

[0127] In some embodiments, referring to FIG3c, the second sub-layer 22 is reused as a pixel defining layer, and a fourth opening 60 is provided in the second protrusion G. The orthographic projection of the fourth opening 60 on the substrate 1 is located in the overlapping area 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 FIG3c, 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 stacked sequentially on the side of the substrate 10 near the first film layer 2. A first via 200 is formed in the third sub-layer 23. The first via 200 also extends into the first sub-layer 21 and the first planarization layer 12. 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] The second planarization layer, the third planarization layer, and the spacer layer are all made of organic resin material, which can be made thicker. This results in a larger slope sidewall area for the first protrusion F and the third protrusion H. Consequently, the reflective electrode 3 covering the side of the second protrusion G opposite to the slope sidewall of the first protrusion F and the reflective electrode 3 covering the side of the second protrusion G opposite to the slope sidewall of the third protrusion H can reflect the light emitted by the light-emitting element from a larger angle to the light-emitting area of ​​the light-emitting element from a smaller angle, thereby improving the light-emitting 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 transistors include a driving transistor J, which 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, sequentially stacked on one side of the substrate 10, with the source 114 and drain 115 located on the same layer. The pixel circuit 11 also includes a transition electrode 116 disposed on the side of the driving transistor J facing away from the substrate 10. A fifth planarization layer 117 is disposed between the transition electrode 116 and the source 114 and drain 115, and a first planarization layer 12 is located on the side of the transition electrode 116 facing away from the substrate 10. Referring to Figures 2a-2c, the reflective electrode 3 is electrically connected to the transition electrode 116 through a first via 200. Referring to Figures 3a-3c, the first electrode 5 is electrically connected to the transition electrode 116 through the first via 200.

[0131] The display panel provided in this embodiment of the present disclosure comprises at least two cup-shaped structures formed in a first film layer in a direction away from the substrate; the radial dimensions of the at least two cup-shaped structures gradually increase in a direction away from or near the substrate, and the radial dimension of each cup-shaped structure gradually increases; in a direction away from the substrate, the orthogonal projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures overlaps the orthogonal projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures; or, in a direction near the substrate, the orthogonal projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures overlaps the orthogonal projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures; the light-emitting functional layer is located between the reflective electrode and the first electrode. The light emitted under the electric field of the 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 technology where the light-emitting element is placed 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. Along the direction away from or close to the substrate, the reflective electrode covering the side wall of the cup-shaped structure with a larger radial dimension can reflect the light emitted by the light-emitting element at a larger viewing angle (e.g., ±60° to ±90°) to the light-emitting area within a smaller viewing angle range (e.g., 0° to ±60°) of the light-emitting element, thereby improving the light-emitting efficiency of the light-emitting element, which in turn helps to improve the lifespan of the display panel and reduce the power consumption of the display panel.

[0132] Secondly, embodiments of this disclosure also provide a display device, including the display panel described in the above embodiments.

[0133] By employing the display panel in the above embodiments, the light emission efficiency of the display device is improved, thereby helping to increase the lifespan of the display device and reduce its power consumption.

[0134] The display device provided in this disclosure can be any product or component with display function, such as an OLED panel, OLED TV, OLED billboard, monitor, mobile phone, or navigator.

[0135] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display panel, wherein, Including substrate, A first film layer is located on one side of the substrate, and 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 towards 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; Along a direction away from the substrate, the orthographic projection of the cup-shaped structure farther from the substrate in any two adjacent cup-shaped structures overlaps the orthographic projection of the cup-shaped structure closer to the substrate on the substrate. Alternatively, along the direction close to the substrate, the orthographic projection of the cup-shaped structure closer to the substrate in any two adjacent cup-shaped structures overlaps the orthographic projection of the cup-shaped structure farther from the substrate on the substrate. The reflective electrode is located on the side of the first film layer opposite to the substrate, and its orthogonal projection on the substrate covers at least the bottom of the cup-shaped structure with the smallest radial dimension and all the sidewalls of the cup-shaped structure. The light-emitting functional layer is located on the side of the reflective electrode that is opposite to or close to the substrate, and is in contact with the reflective electrode; The first electrode is located on the side of the light-emitting functional layer opposite to or close to the substrate and is in contact with the light-emitting functional layer. The orthogonal projection of the first electrode on the substrate at least covers the orthogonal 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 sublayer and the second sublayer are stacked sequentially in a direction away from the substrate. The cup-shaped structure includes a first opening in the first sub-layer and a second opening in the second sub-layer; The radial dimension of the second opening is larger than the radial dimension of the first opening; Along 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; The orthographic projection of the second opening on the substrate overlaps the 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 the side of the second sublayer away from the first sublayer. The cup-shaped structure also includes a third opening formed in the third sub-layer; 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 the direction away from the substrate; The orthographic projection of the third opening on the substrate overlaps the orthographic projection of the second opening on the substrate.

4. The display panel according to claim 3, wherein, The angle between the sidewall of the first opening and the side surface of the first sublayer closest to the substrate ranges from 20° to 60°.

5. The display panel according to claim 4, wherein, The included angle between the sidewall of the second opening and the side surface of the second sublayer closest to the substrate ranges from 30° to 60°.

6. The display panel according to claim 5, wherein, The angle between the sidewall of the third opening and the surface of the third sublayer closest to the substrate ranges from 30° to 60°.

7. The display panel according to claim 2, wherein, The first sublayer includes a first platform, the side surface of the first platform facing away from the substrate is located between the sidewall of the second opening and the sidewall of the first opening, and the three are spliced ​​together in sequence. The reflective electrode is located on the side of the second sublayer facing 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.

8. The display panel according to claim 3, wherein, The first sublayer includes a first platform, the side surface of the first platform facing away from the substrate is located between the sidewall of the second opening and the sidewall of the first opening, and the three are spliced ​​together in sequence. And / or, the second sublayer includes a second platform, the side surface of the second platform facing away from the substrate being located between the sidewall of the third opening and the sidewall of the second opening, and the three are sequentially spliced ​​together; The reflective electrode is located on the side of the third sublayer facing 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, 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 includes a substrate, a pixel circuit, and a first planarization layer, wherein the pixel circuit and the first planarization layer are stacked sequentially on the side of the substrate near the first film layer. A first via is formed in the first film layer, and the first via extends into the first planarization layer. The pixel circuit is exposed at the first via. The reflective electrode extends into the first via and is electrically connected to the pixel circuit. The display panel further includes a pixel defining layer located on the side of the reflective electrode facing away from the substrate, and the pixel defining layer has a fourth opening. 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 sublayer is reused as the second planarization layer; The second sublayer is reused as a third planarization layer or a spacer layer.

11. The display panel according to claim 3, wherein, The first sublayer is reused as the second planarization layer. The second sublayer is reused as the third planarization layer. The third sublayer is reused as a fourth planarization 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 sublayer and the second sublayer are stacked sequentially in a direction away from the substrate. The cup-shaped structure includes a first protrusion and a second protrusion, wherein the first protrusion is located in the first sub-layer and the second protrusion is located in 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 the side of the second sublayer away from the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the first protrusion and the second protrusion on the substrate. The second protrusion and the side of the first protrusion facing away from the substrate are adapted in shape; The shape of the reflective electrode and the side of the second protrusion facing away from the substrate are adapted to each other.

13. The display panel according to claim 1, wherein, The first film layer includes a first sublayer, a second sublayer, and a third sublayer, wherein the first sublayer, the third sublayer, and the second sublayer are stacked sequentially in a direction away from the substrate; The cup-shaped structure includes a first protrusion, a second protrusion, and a third protrusion, wherein the first protrusion is located in the first sub-layer, the second protrusion is located in the second sub-layer, and the third protrusion is located in the third sub-layer; The first protrusion has a trapezoidal cross-sectional shape perpendicular to the substrate, and the third protrusion also has a trapezoidal cross-sectional shape perpendicular to the substrate. 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 the side of the second sub-layer opposite to the substrate, and the orthographic projection of the reflective electrode on the substrate covers the orthographic projections of the second protrusion, the third protrusion, and the first protrusion on the substrate. The shape of the third protrusion is adapted to the side of the substrate away from the substrate, the side of the first protrusion away from the substrate from which the orthographic projection of the third protrusion on the substrate does not overlap, and the shape of the second protrusion. The shape of the reflective electrode and the side of the second protrusion facing away from the substrate are adapted to each other.

14. The display panel according to claim 13, wherein, The projected area of ​​the third protrusion on the substrate is smaller than the projected area of ​​the first protrusion on the substrate.

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

16. The display panel according to claim 12, wherein, The second sub-layer is reused as a pixel delimiting layer. The second protrusion has a fourth opening, 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. 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 sub-layer is reused as a pixel delimiting layer. The second protrusion has a fourth opening, 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. 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; 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 includes a substrate, a pixel circuit, and a first planarization layer, wherein the pixel circuit and the first planarization layer are stacked sequentially on the side of the substrate near the first film layer. A first via is provided in the first sub-layer, and the first via also extends into the first planarization layer, where the pixel circuit is exposed; the first electrode also extends into the first via and is electrically connected to the pixel circuit. The first sublayer is reused as the second planarization layer.

19. The display panel according to claim 17, wherein, The substrate includes a substrate, a pixel circuit, and a first planarization layer, wherein the pixel circuit and the first planarization layer are stacked sequentially on the side of the substrate near the first film layer. A first via is provided in the third sub-layer, and the first via also extends through the first sub-layer and the first planarization layer. 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. The first sublayer is reused as the second planarization layer; The third sublayer is reused as a third flattening layer or a spacer layer.

20. A display device, wherein, Includes the display panel as described in any one of claims 1-19.

Images