Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel comprises a substrate, a plurality of first electrodes, a pixel definition layer, a first film layer, a light emitting layer and a second electrode, and the plurality of first electrodes are arranged on one side of the substrate; the pixel definition layer is arranged on one side of the substrate and covers the plurality of first electrodes, the pixel definition layer is provided with a plurality of pixel openings, and the pixel openings expose the first electrodes; the first film layer is arranged on the side, away from the substrate, of the pixel definition layer and located between every two adjacent pixel openings, and the first film layer is provided with a concave part; the light-emitting layer comprises a first light-emitting part and a second light-emitting part which are connected, the first light-emitting part is arranged in the pixel opening and located on the side, away from the substrate, of the first electrode, and the second light-emitting part is arranged on the side, away from the substrate, of the first film layer and at least covers part of the concave part; the second electrode covers the side, away from the substrate, of the light-emitting layer. By reducing the leakage current between the adjacent sub-pixels, the influence of a secret lighting phenomenon on a low-gray-scale display picture is reduced.

Description

Technical Field

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

[0002] In an organic light emitting diode (OLED) display panel, the light emitting layer of each sub-pixel is formed by evaporation. In the actual production process, it is found that during the evaporation process of the light emitting layer, the light emitting layers of adjacent sub-pixels are prone to overlap, forming a leakage path, resulting in the phenomenon of stealing light, that is, causing the problem of adjacent pixels lighting up at the same time in a monochrome screen. The impact is particularly serious in low grayscale display screens.

[0003] Therefore, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device, which can reduce the influence of the stealth phenomenon on the low grayscale display screen by reducing the leakage current between adjacent sub-pixels.

[0005] To solve the above problems, the technical solution of this application is as follows:

[0006] In a first aspect, the present application proposes a display panel, comprising:

[0007] substrate;

[0008] A plurality of first electrodes are disposed on one side of the substrate;

[0009] A pixel definition layer is disposed on one side of the substrate and covers a plurality of the first electrodes, wherein the pixel definition layer is provided with a plurality of pixel openings, and each of the pixel openings exposes one of the first electrodes;

[0010] A first film layer is provided on a side of the pixel definition layer away from the substrate and between two adjacent pixel openings, and a concave portion is provided on the side of the first film layer away from the pixel definition layer;

[0011] a light-emitting layer, comprising a first light-emitting portion and a second light-emitting portion connected to each other, wherein the first light-emitting portion is disposed in the pixel opening and located on a side of the first electrode away from the substrate, and the second light-emitting portion is disposed on a side of the first film layer away from the substrate and covers at least a portion of the recessed portion; and

[0012] The second electrode covers a side of the light-emitting layer away from the substrate.

[0013] In one embodiment of the present application, the depth of the recessed portion is less than the thickness of the first film layer, and the angle between the side wall of the recessed portion and the bottom wall of the recessed portion is in the range of 90 degrees to 160 degrees;

[0014] The second light-emitting portion continuously covers at least a portion of the recessed portion, the first portion of the second light-emitting portion is arranged on the side wall of the recessed portion, the second portion of the second light-emitting portion is arranged on the bottom wall of the recessed portion, and the thickness of the first portion of the second light-emitting portion is less than the thickness of the second portion of the second light-emitting portion.

[0015] In one embodiment of the present application, the depth of the recessed portion is equal to the thickness of the first film layer, the recessed portion exposes a portion of the pixel definition layer, and an angle between a sidewall of the recessed portion and a plane where a portion of the pixel definition layer exposed to the recessed portion is located is in a range of 90 degrees to 160 degrees;

[0016] The second light-emitting portion continuously covers at least a portion of the recessed portion, the first portion of the second light-emitting portion is disposed on a side wall of the recessed portion, the second portion of the second light-emitting portion is disposed on a portion of the pixel definition layer exposed to the recessed portion, and the thickness of the first portion of the second light-emitting portion is less than the thickness of the second portion of the second light-emitting portion.

[0017] In one embodiment of the present application, the first film layer includes a first sub-portion and a second sub-portion spaced apart along the extension direction of two adjacent pixel openings, and a recessed portion is formed between the first sub-portion and the second sub-portion;

[0018] The second light emitting unit comprises:

[0019] A first sub-segment is disposed on a side of the first sub-portion away from the pixel definition layer and located outside the recessed portion;

[0020] A second subsection is provided on a side of the first subsection close to the second subsection;

[0021] A third subsection is provided at a portion of the pixel definition layer exposed to the recessed portion and is located between the first subsection and the second subsection;

[0022] a fourth subsection, disposed on a side of the second subsection close to the first subsection; and

[0023] a fifth sub-segment, disposed on a side of the second sub-portion away from the pixel definition layer and located outside the recessed portion;

[0024] The first sub-segment, the second sub-segment, the third sub-segment, the fourth sub-segment, and the fifth sub-segment are connected in sequence;

[0025] The thickness of any one of the second subsegment and the fourth subsegment is smaller than the thickness of any one of the first subsegment, the third subsegment, and the fifth subsegment.

[0026] In an embodiment of the present application, at least two of the recessed portions are located between two adjacent pixel openings, and at least two of the recessed portions are arranged at intervals along an extension direction of the two adjacent pixel openings.

[0027] In one embodiment of the present application, the first film layer further includes a third sub-portion, the third sub-portion is spaced apart and arranged on a side of the second sub-portion away from the first sub-portion, and a recessed portion is formed between the third sub-portion and the second sub-portion;

[0028] The second light emitting unit further comprises:

[0029] a sixth subsection, arranged on a side of the second subsection close to the third subsection;

[0030] a seventh subsection, provided at a portion of the pixel definition layer exposed to the recessed portion and located between the second subsection and the third subsection;

[0031] an eighth subsection, disposed on a side of the third subsection close to the second subsection; and

[0032] a ninth sub-segment, disposed on a side of the third sub-portion away from the pixel definition layer and located outside the recessed portion;

[0033] The first sub-segment, the second sub-segment, the third sub-segment, the fourth sub-segment, the fifth sub-segment, the sixth sub-segment, the seventh sub-segment, the eighth sub-segment, and the ninth sub-segment are connected in sequence;

[0034] The thickness of any one of the second subsegment, the fourth subsegment, the sixth subsegment, and the eighth subsegment is smaller than the thickness of any one of the first subsegment, the third subsegment, the fifth subsegment, the seventh subsegment, and the ninth subsegment.

[0035] In one embodiment of the present application, the thickness of the first sub-portion is greater than or equal to 0.2 microns, the thickness of the second sub-portion is greater than or equal to 0.2 microns, and the thickness of the third sub-portion is greater than or equal to 0.2 microns.

[0036] In one embodiment of the present application, an angle between a side wall of the recessed portion and a bottom wall of the recessed portion is in a range of 60 degrees to 80 degrees, and the second light-emitting portion is separated at the recessed portion.

[0037] In one embodiment of the present application, the light-emitting layer includes:

[0038] A first sub-light-emitting layer, comprising a first sub-light-emitting portion and a second sub-light-emitting portion connected to each other, wherein the first sub-light-emitting portion is disposed in the pixel opening and located on a side of the first electrode away from the substrate, and the second sub-light-emitting portion is disposed on a side of the first film layer away from the substrate and covers at least a portion of the recessed portion;

[0039] a second sub-light-emitting layer, comprising a third sub-light-emitting portion and a fourth sub-light-emitting portion connected to each other, wherein the third sub-light-emitting portion is disposed in the pixel opening and located on a side of the first sub-light-emitting portion away from the substrate, and the fourth sub-light-emitting portion is disposed on a side of the second sub-light-emitting portion away from the substrate and covers at least a portion of the recessed portion; and

[0040] A charge generation layer, disposed between the first sub-light emitting layer and the second sub-light emitting layer;

[0041] The first sub-light emitting portion and the third sub-light emitting portion form the first light emitting portion, and the second sub-light emitting portion and the fourth sub-light emitting portion form the second light emitting portion.

[0042] In one embodiment of the present application, the display panel further includes a second film layer, the second film layer is located between the side wall of the pixel opening and the first light-emitting portion, and the second film layer is connected to the first film layer;

[0043] The refractive index of the material of the second film layer is greater than the refractive index of the material of the pixel definition layer.

[0044] In one embodiment of the present application, the second film layer is arranged around the side wall of the pixel opening, the angle formed by the side wall of the pixel opening and the plane where the substrate is located is in the range of 10 degrees to 30 degrees, and the difference between the refractive index of the material of the second film layer and the refractive index of the material of the pixel definition layer is greater than 0.1.

[0045] In the second aspect, the present application proposes a display device, including a display panel, the display panel including a substrate, a plurality of first electrodes, a pixel definition layer, a first film layer, a light-emitting layer and a second electrode, the plurality of first electrodes being arranged on one side of the substrate; the pixel definition layer being arranged on one side of the substrate and covering the plurality of first electrodes, the pixel definition layer being provided with a plurality of pixel openings, each of the pixel openings exposing one of the first electrodes; the first film layer being arranged on a side of the pixel definition layer away from the substrate and being located between two adjacent pixel openings, the first film layer being provided with a recessed portion on a side away from the pixel definition layer; the light-emitting layer including a first light-emitting portion and a second light-emitting portion connected to each other, the first light-emitting portion being arranged in the pixel opening and being located on a side of the first electrode away from the substrate, the second light-emitting portion being arranged on a side of the first film layer away from the substrate and covering at least a portion of the recessed portion; the second electrode covers a side of the light-emitting layer away from the substrate.

[0046] In the present application, the light-emitting layer formed by evaporation of each sub-pixel includes a first light-emitting portion and a second light-emitting portion. The first light-emitting portion is formed in the pixel opening, and the second light-emitting portion is formed outside the pixel opening and connected to the first light-emitting portion. In the actual production process, due to the limited process accuracy of the display panel, in two adjacent sub-pixels with a small spacing, the second light-emitting portions corresponding to the two sub-pixels will overlap or connect due to the influence of the process accuracy of the display panel. After overlapping or connecting, the second light-emitting portions of the two sub-pixels will form a leakage path. Among them, after a sub-pixel is lit, the carrier will be transmitted to another adjacent sub-pixel through the leakage path formed by the overlapping second light-emitting portion, so that the adjacent sub-pixel is illuminated. In the present application, a first film layer is arranged between the openings of two adjacent pixels, and a recessed portion is arranged on the first film layer, so that the second light-emitting portion at least covers a part of the recessed portion, thereby extending the leakage path between the two adjacent sub-pixels and reducing the leakage current between the two adjacent sub-pixels. Due to the reduction of the leakage current, the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing phenomenon on the low grayscale display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic diagram of a first embodiment of a display panel of the present application;

[0048] Figure 2 is a schematic diagram of a first embodiment of a display panel of the present application;

[0049] Figure 3 is a schematic diagram of a first embodiment of a display panel of the present application;

[0050] Figure 4 is a schematic diagram of a first embodiment of a display panel of the present application;

[0051] Figure 5 is a schematic diagram of a first embodiment of a display panel of the present application;

[0052] Figure 6 is a schematic diagram of a second embodiment of a display panel of the present application;

[0053] Figure 7 yes Figure 6 The enlarged view of point B in FIG.

[0054] Figure 8 is a schematic diagram of a second embodiment of a display panel of the present application;

[0055] Fig. 9 is a schematic diagram of a third embodiment of a display panel of the present application;

[0056] Fig.10 is a schematic diagram of a third embodiment of a display panel of the present application;

[0057] Fig.11 It is a schematic diagram of the fourth embodiment of the display panel of the present application. DETAILED DESCRIPTION

[0058] The meanings of the terms used in this specification and claims correspond to the meanings commonly understood by those of ordinary skill in the art to which this application belongs. The terms used in this specification and claims are only for the purpose of facilitating the description and understanding of this application, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0059] The present application proposes a display device, which may be a mobile phone, a tablet computer, an e-reader, an electronic display screen, a laptop computer, a mobile phone, an augmented reality (AR) or virtual reality (VR) device, a media player, a wearable device, a digital camera, a car navigation system, etc. The display device includes a display panel 1000 .

[0060] The present application proposes a display panel 1000 , which may be an organic light emitting diode (OLED) display panel 1000 .

[0061] Optionally, the display panel 1000 includes a substrate 10 , a plurality of first electrodes 50 , a pixel definition layer 30 , a first film layer 40 , a light emitting layer 60 and a second electrode 70 .

[0062] Optionally, a plurality of first electrodes 50 are disposed on one side of the substrate 10. The pixel definition layer 30 is disposed on one side of the substrate 10 and covers the plurality of first electrodes 50. The pixel definition layer 30 is provided with a plurality of pixel openings 31, each pixel opening 31 exposing a first electrode 50.

[0063] Optionally, the first film layer 40 is disposed on a side of the pixel definition layer 30 away from the substrate 10 and between two adjacent pixel openings 31 . A recess 41 is disposed on a side of the first film layer 40 away from the pixel definition layer 30 .

[0064] Optionally, the light-emitting layer 60 includes a first light-emitting portion 61 and a second light-emitting portion 62 connected to each other. The first light-emitting portion 61 is disposed in the pixel opening 31 and is located on a side of the first electrode 50 away from the substrate 10. The second light-emitting portion 62 is disposed on a side of the first film layer 40 away from the substrate 10 and covers at least a portion of the recessed portion 41. The second electrode 70 covers a side of the light-emitting layer 60 away from the substrate 10.

[0065] In the present application, the light-emitting layer 60 formed by evaporation of each sub-pixel includes a first light-emitting portion 61 and a second light-emitting portion 62. The first light-emitting portion 61 is formed inside the pixel opening 31, and the second light-emitting portion 62 is formed outside the pixel opening 31 and is connected to the first light-emitting portion 61. In the actual production process, due to the limited process accuracy of the display panel 1000, in two adjacent sub-pixels with a small spacing, the second light-emitting portions 62 corresponding to the two sub-pixels will overlap or connect due to the influence of the process accuracy of the display panel 1000. After overlapping or connecting, the second light-emitting portions 62 of the two sub-pixels will form a leakage path. Among them, after a sub-pixel is lit, the carriers will be transmitted to another adjacent sub-pixel through the leakage path formed by the overlapping second light-emitting portion 62, so that the adjacent sub-pixel is illuminated. The present application arranges a first film layer 40 between two adjacent pixel openings 31, and arranges a recessed portion 41 on the first film layer 40, so that the second light-emitting portion 62 at least covers a portion of the recessed portion 41, thereby extending the leakage path between two adjacent sub-pixels and reducing the leakage current between two adjacent sub-pixels. Due to the reduction in leakage current, the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the impact of the stealing brightness phenomenon on the low grayscale display screen.

[0066] Optionally, each pixel opening 31 corresponds to a first light-emitting portion 61 and a second light-emitting portion 62 connected to the first light-emitting portion 61. The light-emitting colors of the first light-emitting portion 61 and the second light-emitting portion 62 corresponding to each pixel opening 31 are the same. In the process of forming the light-emitting layer 60, the first light-emitting portion 61 and the second light-emitting portion 62 are formed at the same time, the first light-emitting portion 61 is the portion of the light-emitting layer 60 formed in the pixel opening 31 during the evaporation process, and the second light-emitting portion 62 is the portion of the light-emitting layer 60 formed outside the pixel opening 31 during the evaporation process.

[0067] Optionally, the display panel 1000 of the present application further includes a plurality of light emitting devices, one of which is disposed in each pixel opening 31. The light emitting device includes a first electrode 50, a first light emitting portion 61 and a portion of the second electrode 70 located in the pixel opening 31.

[0068] Optionally, the light-emitting device includes a blue light-emitting device, a red light-emitting device 91, and a green light-emitting device 92. Since the luminous efficiency of the blue light-emitting device is low, the size of the blue light-emitting device is relatively large, and the distance between the blue light-emitting device and the adjacent light-emitting device is also large. Therefore, the second light-emitting portion 62 of the blue light-emitting device is not easy to overlap or connect with the second light-emitting portion 62 of the adjacent light-emitting device. The luminous efficiency of the green light-emitting device 92 and the red light-emitting device 91 is higher than that of the blue light-emitting device. Therefore, the sizes of the green light-emitting device 92 and the red light-emitting device 91 are relatively small, and the distance between the green light-emitting device 92 and the red light-emitting device 91 and the adjacent light-emitting device is also small. Therefore, the second light-emitting portion 62 of the green light-emitting device 92 and the red light-emitting device 91 is easy to overlap or connect with the second light-emitting portion 62 of the adjacent light-emitting device, thereby forming a leakage path.

[0069] Optional, see Figure 1 The red light emitting device 91 is adjacent to the green light emitting device 92 , and the second light emitting portion 62 of the red light emitting device 91 is connected to the second light emitting portion 62 of the green light emitting device 92 .

[0070] Optional, see Figure 2 The red light emitting device 91 is arranged adjacent to the green light emitting device 92 , and the second light emitting portion 62 of the red light emitting device 91 is overlapped above the second light emitting portion 62 of the green light emitting device 92 .

[0071] Optional, see Figure 3 The red light emitting device 91 and the green light emitting device 92 are arranged adjacent to each other, and the second light emitting portion 62 of the green light emitting device 92 is overlapped above the second light emitting portion 62 of the red light emitting device 91 .

[0072] In the above three embodiments, a leakage path is formed between the red light emitting device 91 and the green light emitting device 92. The present application extends the leakage path and reduces the leakage current through the design of the recessed portion 41. The brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the impact of the stealing phenomenon on the low grayscale display screen.

[0073] In order to avoid redundancy, an embodiment in which the second light-emitting portions 62 of two adjacent light-emitting devices are connected will be described later. The light-emitting colors of the two adjacent light-emitting devices may be the same or different, and the subsequent embodiments will not limit this.

[0074] Optionally, the first electrode 50 is an anode, and the second electrode 70 is a cathode. The second electrode 70 is formed by continuous laying over the entire surface.

[0075] Optionally, the display panel 1000 further includes a driving circuit layer 20. The driving circuit layer 20 is disposed on one side of the substrate 10, and the first electrode 50 and the pixel definition layer 30 are disposed on the side of the driving circuit layer 20 away from the substrate 10. The driving circuit layer 20 includes a plurality of thin film transistors and a planarization layer. The plurality of thin film transistors are disposed on one side of the substrate 10, the planarization layer covers the plurality of thin film transistors, and the first electrode 50 passes through the planarization layer and is electrically connected to the thin film transistors.

[0076] Optional, see Figure 4 , the light-emitting layer 60 includes a first sub-light-emitting layer 63, a second sub-light-emitting layer 64 and a charge generation layer. The first sub-light-emitting layer 63 includes a first sub-light-emitting portion 63a and a second sub-light-emitting portion 63b connected to each other. The first sub-light-emitting portion 63a is arranged in the pixel opening 31 and is located on the side of the first electrode 50 away from the substrate 10. The second sub-light-emitting portion 63b is arranged on the side of the first film layer 40 away from the substrate 10, and at least covers a part of the recessed portion 41. The second sub-light-emitting layer 64 includes a third sub-light-emitting portion 64a and a fourth sub-light-emitting portion 64b connected to each other. The third sub-light-emitting portion 64a is arranged in the pixel opening 31 and is located on the side of the first sub-light-emitting portion 63a away from the substrate 10. The fourth sub-light-emitting portion 64b is arranged on the side of the second sub-light-emitting portion 63b away from the substrate 10, and at least covers a part of the recessed portion 41. The charge generation layer is arranged between the first sub-light-emitting layer 63 and the second sub-light-emitting layer 64. Among them, the first sub-light-emitting portion 63a and the third sub-light-emitting portion 64a form the first light-emitting portion 61. The second sub-light emitting portion 63 b and the fourth sub-light emitting portion 64 b form a second light emitting portion 62 .

[0077] In order to improve the luminous efficiency of the light-emitting device, the light-emitting device of the present application is a stacked light-emitting device including a plurality of light-emitting layers 60. The light-emitting layer 60 of each stacked light-emitting device includes at least two or more film layers. When the light-emitting layer 60 of the stacked light-emitting device is two layers, the first light-emitting layer 60 is a first sub-light-emitting layer 63, and the second light-emitting layer 60 is a second sub-light-emitting layer 64. The portion of the first sub-light-emitting layer 63 located outside the pixel opening 31 is a second sub-light-emitting portion 63b, and the portion of the second sub-light-emitting layer 64 located outside the pixel opening 31 is a fourth sub-light-emitting portion 64b, and the second sub-light-emitting portion 63b and the fourth sub-light-emitting portion 64b form a second light-emitting portion 62. Since the second sub-light-emitting portion 63b and the fourth sub-light-emitting portion 64b located outside the pixel opening 31 both cover the recessed portion 41, when adjacent stacked light-emitting devices are connected or overlapped, the leakage path of the adjacent stacked light-emitting devices can be extended, the leakage current can be reduced, and the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing phenomenon on the low grayscale display screen.

[0078] In the present application, the light emitting device may be a structure of a single-layer light emitting layer 60, or a stacked structure of multiple light emitting layers 60. To avoid redundancy, the following will describe embodiments in which the light emitting devices are all single-layer light emitting layers 60. The light emitting device may be a single-layer light emitting layer 60, or a multi-layer light emitting layer 60, and the subsequent embodiments will not limit this.

[0079] Optional, see Figure 3 The display panel 1000 further includes a second film layer 80. The second film layer 80 is located between the side wall of the pixel opening 31 and the first light emitting portion 61, and the second film layer 80 is connected to the first film layer 40. The refractive index of the material of the second film layer 80 is greater than the refractive index of the material of the pixel definition layer 30.

[0080] The material of the second film layer 80 is a transparent material with a high refractive index relative to the pixel definition layer 30. Since the refractive index of the second film layer 80 is greater than the refractive index of the pixel definition layer 30, the light emitted by the light-emitting device will be totally reflected at the interface where the second film layer 80 and the pixel definition layer 30 are in contact, thereby improving the light extraction efficiency at the front side.

[0081] Optionally, the difference between the refractive index of the material of the second film layer 80 and the refractive index of the material of the pixel definition layer 30 is greater than 0.1.

[0082] The difference between the refractive index of the material of the second film layer 80 and the refractive index of the material of the pixel definition layer 30 is one of 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, and 0.50. As the difference increases, the light emitted by the light emitting device is more likely to be totally reflected at the interface, thereby further improving the light emitting efficiency.

[0083] Optionally, the material of the pixel definition layer 30 is at least one of silicon oxide, silicon nitride and silicon oxynitride.

[0084] Optionally, the material of the second film layer 80 includes an organic material doped with nanoparticles.

[0085] The nanoparticles may be titanium oxide particles or zirconium oxide particles with a particle size greater than 100 nanometers. The organic material may be acrylic, resin or high-viscosity organic ink. Since a portion of the second film layer 80 covers the corner portion of the pixel definition layer 30, in order to avoid damage caused by stress concentration at the corner of the pixel definition layer 30, the second film layer 80 needs to have a certain deformation ability. Therefore, doping the organic material with nanoparticles can improve the deformation ability of the second film layer 80 and avoid damage due to stress concentration.

[0086] Optionally, the material of the second film layer 80 is an organic-inorganic hybrid material.

[0087] The organic-inorganic hybrid material may be metalloxane.

[0088] Optionally, the material of the first film layer 40 is the same as that of the second film layer 80, and the first film layer 40 and the second film layer 80 are integrally formed. Since the first film layer 40 and the second film layer 80 both need to be patterned in the manufacturing process of the display panel 1000, the first film layer 40 and the second film layer 80 are integrally formed, which can save a process and a photomask, thereby reducing the production cost of the display panel 1000.

[0089] Optionally, the interface shape between the first film layer 40 and the second film layer 80 may be one of an L-shape, an arc shape, and a rounded corner.

[0090] Optionally, the second film layer 80 is disposed around the side wall of the pixel opening 31. The angle formed by the side wall of the pixel opening 31 and the plane where the substrate 10 is located is in the range of 10 degrees to 30 degrees.

[0091] The second film layer 80 is disposed around the side wall of the pixel opening 31, and can form a light extraction structure with the first electrode 50. The first electrode 50 is usually a metal electrode with a high reflectivity, and the light emitted from the light emitting layer 60 to the light extraction structure will be reflected to the front, thereby improving the front light extraction efficiency of the display panel 1000.

[0092] In the first embodiment of the present application:

[0093] Optional, see Figure 5 , an angle A1 between the side wall of the recessed portion 41 and the bottom wall of the recessed portion 41 is in a range of 90 degrees to 160 degrees, and a depth of the recessed portion 41 is less than a thickness of the first film layer 40 .

[0094] An angle A1 between the side wall of the recess 41 and the bottom wall of the recess 41 is one of 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 145 degrees, 150 degrees, 155 degrees, and 160 degrees.

[0095] Optionally, the second light-emitting portion 62 continuously covers at least a portion of the recessed portion 41, the first portion of the second light-emitting portion 62 is disposed on the side wall of the recessed portion 41, the second portion of the second light-emitting portion 62 is disposed on the bottom wall of the recessed portion 41, and the thickness of the first portion of the second light-emitting portion 62 is less than the thickness of the second portion of the second light-emitting portion 62.

[0096] Between two adjacent light-emitting devices, a leakage path is formed by the connected or overlapped second light-emitting portion 62. Therefore, according to the basic principle of resistance, the resistance of the second light-emitting portion 62 is inversely proportional to the thickness of the second light-emitting portion 62. The first part of the second light-emitting portion 62 is arranged on the side wall of the recessed portion 41, and the second part of the second light-emitting portion 62 is arranged on the bottom wall of the recessed portion 41, and the thickness of the first part of the second light-emitting portion 62 is less than the thickness of the second part of the second light-emitting portion 62. Since the first part of the second light-emitting portion 62 and the second part of the second light-emitting portion 62 form a leakage path between two adjacent light-emitting devices, the resistance of the leakage path mainly depends on the part with a larger resistance in the leakage path. According to the basic principle of resistance, in a film layer formed by the same material, the smaller the thickness of the part, the greater the resistance, and the larger the thickness of the part, the smaller the resistance. Since the first portion of the second light-emitting portion 62 is disposed on the side wall of the recessed portion 41 and the thickness of the first portion of the second light-emitting portion 62 is relatively small, the resistance of the leakage path between two adjacent light-emitting devices can be increased, thereby reducing the leakage current between the two adjacent light-emitting devices, and the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing brightness phenomenon on the low grayscale display screen.

[0097] In the second embodiment of the present application:

[0098] Optional, see Figure 6 The angle A2 between the side wall of the recessed portion 41 and the portion of the pixel definition layer 30 exposed in the recessed portion 41 is in the range of 90 degrees to 160 degrees, the depth of the recessed portion 41 is equal to the thickness of the first film layer 40 , and the recessed portion 41 exposes a portion of the pixel definition layer 30 .

[0099] An angle A2 between the side wall of the recess 41 and the portion of the pixel definition layer 30 exposed in the recess 41 is one of 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 145 degrees, 150 degrees, 155 degrees, and 160 degrees.

[0100] Optionally, the second light-emitting portion 62 continuously covers at least a portion of the recessed portion 41, the first portion of the second light-emitting portion 62 is disposed on the side wall of the recessed portion 41, the second portion of the second light-emitting portion 62 is disposed on a portion of the pixel definition layer 30 exposed to the recessed portion 41, and the thickness of the first portion of the second light-emitting portion 62 is less than the thickness of the second portion of the second light-emitting portion 62.

[0101] In the present application, the light emitting layer 60 is formed by evaporation, wherein the second light emitting portion 62 is formed on the first film layer 40 by evaporation.

[0102] See also Figure 7 , Figure 7 The hypotenuse in FIG. 4 is a simplified schematic diagram of the side wall of the recessed portion 41. Figure 7 The plane connected to the hypotenuse is a simplified schematic diagram of the portion of the pixel definition layer 30 exposed to the recessed portion 41. According to the evaporation deposition principle, for a deposition morphology consisting of a single hypotenuse and a single straight edge, the projection length of the hypotenuse on the substrate 10 is set to b, and the projection length of the straight edge on the substrate 10 is set to b, the thickness of the second portion of the second light-emitting portion 62 is H1, and the thickness of the first portion of the second light-emitting portion 62 is H2.

[0103] According to the deposition principle of the light-emitting layer 60, the volume of the light-emitting layer 60 deposited in the same projection area is the same, and the relationship can be obtained: H2*b=H1*c, where c is the length of the hypotenuse. Since the projection length of the hypotenuse on the substrate 10 is b, the length of c is greater than the length of b. Therefore, according to the above equation, the thickness H1 of the second part of the second light-emitting portion 62 is less than the thickness H2 of the first part of the second light-emitting portion 62.

[0104] Since the leakage path is formed by the second light-emitting portion 62 between two adjacent light-emitting devices, the resistance of the leakage path is determined by the portion with a relatively small thickness in the second light-emitting portion 62. In this embodiment, by providing the recessed portion 41, the thickness of the second light-emitting portion 62 covered on the side wall of the recessed portion 41 by evaporation is reduced compared to the thickness of other portions of the second light-emitting portion 62, thereby increasing the overall resistance of the second light-emitting portion 62, reducing the leakage current between two adjacent light-emitting devices that are overlapped or connected, and the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing brightness phenomenon on the low grayscale display screen.

[0105] Optionally, the first film layer 40 includes a first sub-portion 42 and a second sub-portion 43 that are spaced apart along the extending direction of two adjacent pixel openings 31 , and a recessed portion 41 is formed between the first sub-portion 42 and the second sub-portion 43 .

[0106] Optional, see Figure 8 The second light emitting portion 62 includes a first sub-segment 62a, a second sub-segment 62b, a third sub-segment 62c, a fourth sub-segment 62d and a fifth sub-segment 62e which are connected in sequence.

[0107] Optionally, the first subsection 62a is disposed on a side of the first subsection 42 away from the pixel definition layer 30 and is located outside the recessed portion 41. The second subsection 62b is disposed on a side of the first subsection 42 close to the second subsection 43. The third subsection 62c is disposed on a portion of the pixel definition layer 30 exposed to the recessed portion 41 and is located between the first subsection 42 and the second subsection 43. The fourth subsection 62d is disposed on a side of the second subsection 43 close to the first subsection 42. The fifth subsection 62e is disposed on a side of the second subsection 43 away from the pixel definition layer 30 and is located outside the recessed portion 41.

[0108] Optionally, the thickness of any one of the second sub-segment 62b and the fourth sub-segment 62d is smaller than the thickness of any one of the first sub-segment 62a, the third sub-segment 62c, and the fifth sub-segment 62e.

[0109] In this embodiment, the second light-emitting portion 62 of one of the two adjacent light-emitting devices covers the entire recessed portion 41. In this embodiment, since the second sub-segment 62b covers the side of the first sub-segment 42 and the fourth sub-segment 62d covers the side of the second sub-segment 43, the side of the first sub-segment 42 and the side of the second sub-segment 43 intersect with the plane where the substrate 10 is located. Therefore, the thickness of any one of the second sub-segment 62b and the fourth sub-segment 62d is less than the thickness of any one of the first sub-segment 62a, the third sub-segment 62c and the fifth sub-segment 62e. In this embodiment, the resistance of the leakage path is determined by the portion with a smaller thickness in the second light-emitting portion 62. Since the thickness of the second sub-segment 62b and the fourth sub-segment 62d is relatively small, the resistance of the leakage path can be increased, thereby reducing the leakage current between the two adjacent light-emitting devices that are overlapped or connected, and the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing phenomenon on the low grayscale display screen.

[0110] Optionally, the thickness of the first sub-portion 42 is greater than or equal to 0.2 micrometers. The thickness of the second sub-portion 43 is greater than or equal to 0.2 micrometers.

[0111] The thickness of the first sub-portion 42 may be equal to or different from the thickness of the second sub-portion 43. The thickness of the first sub-portion 42 is one of 0.2 micrometers, 0.3 micrometers, 0.4 micrometers, 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, and 0.8 micrometers. The thickness of the second sub-portion 43 is one of 0.2 micrometers, 0.3 micrometers, 0.4 micrometers, 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, and 0.8 micrometers.

[0112] Please refer again Figure 7According to the deposition principle of the light-emitting layer 60, the volume of the light-emitting layer 60 deposited in the same projection area is the same, and the relationship can be obtained: H2*b=H1*c, where c is the length of the hypotenuse. Since the projection length of the hypotenuse on the substrate 10 is b, the length of c is greater than the length of b. Therefore, according to the above equation, the thickness H1 of the second part of the second light-emitting portion 62 is less than the thickness H2 of the first part of the second light-emitting portion 62.

[0113] In order to verify the influence of the thickness of the first film layer 40, the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 on the resistance of the second light-emitting portion 62, the present application verifies the increase of resistance by setting a control group and multiple experimental groups. The increase of resistance can be understood as (the difference between the resistance of the second light-emitting portion 62 in the experimental group and the resistance of the second light-emitting portion 62 in the control group) / the resistance of the second light-emitting portion 62 in the experimental group.

[0114] The structure of the control group is as follows: the first film layer 40 is not disposed between two adjacent pixel openings 31 , and the second light-emitting portion 62 is disposed on the pixel definition layer 30 between two adjacent pixel openings 31 .

[0115] See also Figure 6 The structure of the experimental group is as follows: a first film layer 40 is disposed between two adjacent pixel openings 31, and the first film layer 40 is provided with a recessed portion 41, the thickness of the recessed portion 41 is equal to the thickness of the first film layer 40, the side wall of the recessed portion 41 is a plane, and the angle between the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 is A2. The value of A2 is one of 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, and 145 degrees, and the thickness of the first film layer 40 is one of 0.2 micrometers, 0.3 micrometers, 0.4 micrometers, 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, and 0.8 micrometers.

[0116] After the experiment, the increase in resistance of each experimental group compared with the control group is shown in the following table, where H is the thickness of the first film layer, and A2 is the angle formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30:

[0117]

[0118] Please refer to the above table. As the thickness of the first film layer 40 increases, the increase in the resistance of the leakage path between two adjacent light-emitting devices also increases. As the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 decreases, the increase in the resistance of the leakage path between two adjacent light-emitting devices increases. In actual production, the thickness of the first film layer 40 and the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 can be set according to requirements.

[0119] Take the luminous intensity of the light-emitting device that is stealing light as 0.02 nits as an example. In the low grayscale display screen, according to different products, the luminous intensity of the light-emitting device that is stealing light is reduced to a value of 0.008 nits, 0.005 nits or 0.003 nits. In the human eye, it can be regarded as no light in the low grayscale display screen. Taking the reduction of the luminous intensity of the light-emitting device that is stealing light from 0.02 nits to 0.008 nits as an example, the reduction in luminous intensity is 60%. Therefore, according to the above table, the thickness of the first film layer 40 can be set to 0.8 microns, and the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 can be set to 105 degrees or 100 degrees. At this time, the corresponding resistance increase is 62.9% and 95.5%, thereby reducing the brightness of the adjacent light-emitting device that is stealing light. The thickness of the first film layer 40 can also be set to 0.7 microns, and the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 can be set to 100 degrees. In this case, the corresponding resistance increase is 83.6%, thereby reducing the brightness of the adjacent light-emitting device. The thickness of the first film layer 40 can also be set to 0.6 millimeters, and the angle A2 formed by the side wall of the recessed portion 41 and the upper surface of the pixel definition layer 30 can be set to 100 degrees. In this case, the corresponding resistance increase is 71.6%, thereby reducing the brightness of the adjacent light-emitting device.

[0120] In the third embodiment of the present application:

[0121] In order to avoid redundancy, the third embodiment of the present application will describe the parts different from the second embodiment of the present application.

[0122] The third embodiment of the present application is different from the second embodiment of the present application in that:

[0123] Optional, see Fig. 9 At least two recessed portions 41 are located between two adjacent pixel openings 31 , and at least two recessed portions 41 are spaced apart along the extending direction of the two adjacent pixel openings 31 .

[0124] As the number of recessed portions 41 between two adjacent sub-pixels increases, the leakage path between the two adjacent sub-pixels is extended, the leakage current is reduced, and the brightness of the adjacent sub-pixels after being illuminated is also reduced, thereby reducing the impact of the stealing phenomenon on the low grayscale display image.

[0125] Optional, see Fig.10 The first film layer 40 further includes a third sub-portion 44 . The third sub-portion 44 is disposed at a distance from the second sub-portion 43 on a side away from the first sub-portion 42 , and a recessed portion 41 is formed between the third sub-portion 44 and the second sub-portion 43 .

[0126] Optionally, the second light-emitting portion 62 further includes a sixth sub-segment 62f, a seventh sub-segment 62g, an eighth sub-segment 62h, and a ninth sub-segment 62i which are sequentially connected to the first sub-segment 62a, the second sub-segment 62b, the third sub-segment 62c, the fourth sub-segment 62d, and the fifth sub-segment 62e.

[0127] Optionally, the sixth sub-segment 62f is disposed on the side of the second sub-portion 43 close to the third sub-portion 44. The seventh sub-segment 62g is disposed on the portion of the pixel definition layer 30 exposed to the recessed portion 41, and is located between the second sub-portion 43 and the third sub-portion 44. The eighth sub-segment 62h is disposed on the side of the third sub-portion 44 close to the second sub-portion 43. The ninth sub-segment 62i is disposed on the side of the third sub-portion 44 away from the pixel definition layer 30, and is located outside the recessed portion 41.

[0128] Optionally, the thickness of any one of the second subsegment 62b, the fourth subsegment 62d, the sixth subsegment 62f, and the eighth subsegment 62h is smaller than the thickness of any one of the first subsegment 62a, the third subsegment 62c, the fifth subsegment 62e, the seventh subsegment 62g, and the ninth subsegment 62i.

[0129] In this embodiment, the second light emitting portion 62 of one of the two adjacent light emitting devices covers the two recessed portions 41. In this embodiment, since the second sub-segment 62b covers the side of the first sub-segment 42, the fourth sub-segment 62d covers the side of the second sub-segment 43, the sixth sub-segment 62f covers the side of the second sub-segment 43, and the eighth sub-segment 62h covers the side of the third sub-segment 44. The side of the first sub-segment 42, the side of the second sub-segment 43, and the side of the third sub-segment 44 all intersect with the plane where the substrate 10 is located. Therefore, the thickness of any one of the second sub-segment 62b, the fourth sub-segment 62d, the sixth sub-segment 62f, and the eighth sub-segment 62h is less than the thickness of any one of the first sub-segment 62a, the third sub-segment 62c, the fifth sub-segment 62e, the seventh sub-segment 62g, and the ninth sub-segment 62i. In this embodiment, the resistance of the leakage path is determined by the portion with a smaller thickness in the second light-emitting portion 62. Since the thicknesses of the second sub-segment 62b, the fourth sub-segment 62d, the sixth sub-segment 62f and the eighth sub-segment 62h are relatively small, the resistance of the leakage path can be increased, thereby reducing the leakage current between two adjacent overlapping or connected light-emitting devices, and the brightness of adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing brightness phenomenon on the low grayscale display screen.

[0130] Optionally, the thickness of the third sub-portion 44 is greater than or equal to 0.2 microns. The thickness of the third sub-portion 44 may be equal to or different from the thickness of the first sub-portion 42 and the thickness of the second sub-portion 43. The thickness of the third sub-portion 44 is one of 0.2 microns, 0.3 microns, 0.4 microns, 0.5 microns, 0.6 microns, 0.7 microns, and 0.8 microns. By increasing the thickness of the third sub-portion 44, the leakage current between two adjacent light-emitting devices can be reduced, and the brightness of adjacent sub-pixels after being illuminated is also reduced, thereby reducing the influence of the stealing phenomenon on the low grayscale display screen.

[0131] In the fourth embodiment of the present application:

[0132] Optionally, an angle A3 between the side wall of the recessed portion 41 and the bottom wall of the recessed portion 41 is in a range of 60 degrees to 80 degrees. The second light emitting portion 62 is separated at the recessed portion 41 .

[0133] See also Fig.11 In the present embodiment, the angle A3 between the side wall of the recessed portion 41 and the bottom wall of the recessed portion 41 is in the range of 60 to 80 degrees, forming an undercut structure, and the second light-emitting portion 62 is cut off at the recessed portion 41, thereby blocking the leakage path, making it impossible for the adjacent light-emitting device to be illuminated, thereby reducing the influence of the stealing phenomenon on the low grayscale display screen.

[0134] The above is a detailed description of the specific implementation of the present application. The above implementation disclosed in the present application is only the preferred implementation of the present application. For ordinary technicians in this field, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements all fall within the scope of protection defined by the claims of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of first electrodes are disposed on one side of the substrate; A pixel definition layer is disposed on one side of the substrate and covers a plurality of the first electrodes, wherein the pixel definition layer is provided with a plurality of pixel openings, and each of the pixel openings exposes one of the first electrodes; A first film layer is provided on a side of the pixel definition layer away from the substrate and between two adjacent pixel openings, and a concave portion is provided on the side of the first film layer away from the pixel definition layer; a light-emitting layer, comprising a first light-emitting portion and a second light-emitting portion connected to each other, wherein the first light-emitting portion is disposed in the pixel opening and located on a side of the first electrode away from the substrate, and the second light-emitting portion is disposed on a side of the first film layer away from the substrate and covers at least a portion of the recessed portion; as well as The second electrode covers a side of the light-emitting layer away from the substrate.

2. The display panel according to claim 1, wherein: The depth of the recessed portion is less than the thickness of the first film layer, and the angle between the side wall of the recessed portion and the bottom wall of the recessed portion is in the range of 90 degrees to 160 degrees; The second light-emitting portion continuously covers at least a portion of the recessed portion, the first portion of the second light-emitting portion is arranged on the side wall of the recessed portion, the second portion of the second light-emitting portion is arranged on the bottom wall of the recessed portion, and the thickness of the first portion of the second light-emitting portion is less than the thickness of the second portion of the second light-emitting portion.

3. The display panel according to claim 1, wherein: The depth of the recessed portion is equal to the thickness of the first film layer, the recessed portion exposes a portion of the pixel definition layer, and an angle between a sidewall of the recessed portion and a plane where the portion of the pixel definition layer exposed to the recessed portion is located is in a range of 90 degrees to 160 degrees; The second light-emitting portion continuously covers at least a portion of the recessed portion, the first portion of the second light-emitting portion is disposed on a side wall of the recessed portion, the second portion of the second light-emitting portion is disposed on a portion of the pixel definition layer exposed to the recessed portion, and the thickness of the first portion of the second light-emitting portion is less than the thickness of the second portion of the second light-emitting portion.

4. The display panel according to claim 3, wherein: The first film layer comprises a first sub-portion and a second sub-portion which are arranged at intervals along the extending direction of two adjacent pixel openings, and a recessed portion is formed between the first sub-portion and the second sub-portion; The second light emitting unit comprises: A first sub-segment is disposed on a side of the first sub-portion away from the pixel definition layer and located outside the recessed portion; A second subsection is provided on a side of the first subsection close to the second subsection; A third subsection is provided at a portion of the pixel definition layer exposed to the recessed portion and is located between the first subsection and the second subsection; a fourth subsection, disposed on a side of the second subsection close to the first subsection; and a fifth sub-segment, disposed on a side of the second sub-portion away from the pixel definition layer and located outside the recessed portion; The first sub-segment, the second sub-segment, the third sub-segment, the fourth sub-segment, and the fifth sub-segment are connected in sequence; The thickness of any one of the second subsegment and the fourth subsegment is smaller than the thickness of any one of the first subsegment, the third subsegment, and the fifth subsegment.

5. The display panel according to claim 4, wherein: At least two of the recessed portions are located between two adjacent pixel openings, and at least two of the recessed portions are arranged at intervals along an extension direction of the two adjacent pixel openings.

6. The display panel according to claim 5, characterized in that: The first film layer further includes a third sub-portion, the third sub-portion is spaced apart and arranged on a side of the second sub-portion away from the first sub-portion, and a recessed portion is formed between the third sub-portion and the second sub-portion; The second light emitting unit further comprises: a sixth subsection, arranged on a side of the second subsection close to the third subsection; a seventh subsection, provided at a portion of the pixel definition layer exposed to the recessed portion and located between the second subsection and the third subsection; an eighth subsection, disposed on a side of the third subsection close to the second subsection; and a ninth sub-segment, disposed on a side of the third sub-portion away from the pixel definition layer and located outside the recessed portion; The first sub-segment, the second sub-segment, the third sub-segment, the fourth sub-segment, the fifth sub-segment, the sixth sub-segment, the seventh sub-segment, the eighth sub-segment, and the ninth sub-segment are connected in sequence; The thickness of any one of the second subsegment, the fourth subsegment, the sixth subsegment, and the eighth subsegment is smaller than the thickness of any one of the first subsegment, the third subsegment, the fifth subsegment, the seventh subsegment, and the ninth subsegment.

7. The display panel according to claim 6, wherein: The thickness of the first sub-portion is greater than or equal to 0.2 micrometers, the thickness of the second sub-portion is greater than or equal to 0.2 micrometers, and the thickness of the third sub-portion is greater than or equal to 0.2 micrometers.

8. The display panel according to claim 1, wherein: An included angle between the side wall of the recessed portion and the bottom wall of the recessed portion is in a range of 60 degrees to 80 degrees, and the second light-emitting portion is separated at the recessed portion.

9. The display panel according to claim 1, wherein: The light-emitting layer comprises: A first sub-light-emitting layer, comprising a first sub-light-emitting portion and a second sub-light-emitting portion connected to each other, wherein the first sub-light-emitting portion is disposed in the pixel opening and located on a side of the first electrode away from the substrate, and the second sub-light-emitting portion is disposed on a side of the first film layer away from the substrate and covers at least a portion of the recessed portion; a second sub-light-emitting layer, comprising a third sub-light-emitting portion and a fourth sub-light-emitting portion connected to each other, wherein the third sub-light-emitting portion is disposed in the pixel opening and located on a side of the first sub-light-emitting portion away from the substrate, and the fourth sub-light-emitting portion is disposed on a side of the second sub-light-emitting portion away from the substrate and covers at least a portion of the recessed portion; and A charge generation layer, disposed between the first sub-light emitting layer and the second sub-light emitting layer; The first sub-light emitting portion and the third sub-light emitting portion form the first light emitting portion, and the second sub-light emitting portion and the fourth sub-light emitting portion form the second light emitting portion.

10. The display panel according to any one of claims 1 to 9, characterized in that: The display panel further includes a second film layer, the second film layer is located between the side wall of the pixel opening and the first light-emitting portion, and the second film layer is connected to the first film layer; The refractive index of the material of the second film layer is greater than the refractive index of the material of the pixel definition layer.

11. The display panel according to claim 10, wherein: The second film layer is arranged around the side wall of the pixel opening, and the angle formed by the side wall of the pixel opening and the plane where the substrate is located is in the range of 10 degrees to 30 degrees. The difference between the refractive index of the material of the second film layer and the refractive index of the material of the pixel definition layer is greater than 0.

1.

12. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 11.

Images