Display panel, manufacturing method thereof and display device

Abstract

The invention relates to a display panel, a manufacturing method thereof and a display device. The display panel comprises a substrate, an isolation structure, a light-emitting function part, a conductive connection part and a first electrode part. The isolation structure is arranged on one side of the substrate and defines a first opening; the light-emitting function part is arranged in the first opening; the conductive connecting part is arranged in the first opening; the conductive connection part is located at the edge of the light-emitting function part and is connected with the isolation structure; the first electrode part is arranged on the side, away from the substrate, of the light-emitting function part and connected with the conductive connecting part, so that the first electrode part can be electrically connected with the isolation structure through the conductive connecting part, the reliability of connection between the first electrode part and the isolation structure can be improved, the probability that the display panel displays dark spots can be reduced, the poor display of the display panel is improved, and the display effect of the display panel is improved. And the display quality of the display panel is improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) has the characteristics of self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so it has attracted widespread attention and has gradually replaced traditional liquid crystal displays as a new generation of display methods. It is widely used in mobile phone screens, computer monitors, full-color TVs, etc. However, the current OLED display panels have problems such as poor display. Summary of the invention

[0003] Based on this, the present application provides a display panel and a manufacturing method thereof and a display device capable of improving display defects.

[0004] According to one aspect of the present application, a display panel is provided, including:

[0005] substrate;

[0006] An isolation structure, disposed on one side of the substrate and defining a first opening;

[0007] A light-emitting functional portion, disposed at the first opening;

[0008] A conductive connection portion, provided at the first opening; the conductive connection portion is located at the edge of the light-emitting functional portion and connected to the isolation structure;

[0009] The first electrode portion is disposed on a side of the light emitting functional portion away from the substrate and is connected to the conductive connecting portion.

[0010] The display panel provided by the embodiment of the present application is configured such that a conductive connection portion is provided at a first opening; the conductive connection portion is located at an edge of a light-emitting functional portion and is connected to an isolation structure; a first electrode portion is provided on a side of the light-emitting functional portion away from the substrate and is connected to the conductive connection portion. In this way, the first electrode portion can be electrically connected to the isolation structure through the conductive connection portion, thereby improving the reliability of the connection between the first electrode portion and the isolation structure, reducing the probability of dark spots on the display panel, improving poor display of the display panel, and improving the display quality of the display panel.

[0011] In some embodiments, the conductive connection portion overlaps a side wall of the isolation structure close to the first opening.

[0012] Optionally, the conductive connection portion is in an “L” shape and overlaps with a side wall of the isolation structure.

[0013] Optionally, the thickness of the conductive connection portion is greater than or equal to the thickness of the first electrode portion.

[0014] Optionally, an orthographic projection of the conductive connection portion on the substrate does not overlap with an orthographic projection of the light emitting area of ​​the light emitting functional portion on the substrate.

[0015] Optionally, the conductive connection portion includes a plurality of segments, the plurality of segments are arranged in a ring-shaped manner, and at least one of the segments is connected to the isolation structure.

[0016] Optionally, the conductive connecting portion is a ring structure.

[0017] Optionally, the light-emitting functional part includes a plurality of functional layers, and there is a distance between at least part of the functional layers and the isolation structure.

[0018] Optionally, the conductive connection portion is made of a metal material or an alloy material.

[0019] Optionally, the material of the conductive connection portion is the same as that of the first electrode portion.

[0020] In some embodiments, an orthographic projection of the first electrode portion on the substrate overlaps with an orthographic projection of the conductive connection portion on the substrate.

[0021] Optionally, the first electrode portion at least covers at least a portion of a surface of the light-emitting functional portion that is away from the substrate.

[0022] Optionally, the first electrode portion includes a first main portion and an extension portion which are connected to each other, and the first main portion is arranged on the surface of the light-emitting functional portion away from the substrate; the extension portion extends in a direction close to the isolation structure, and the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the conductive connection portion on the substrate.

[0023] Optionally, the first main body covers the light emitting area of ​​the light emitting functional part.

[0024] Optionally, the extension portion is annular and is located at the periphery of the first main body portion.

[0025] In some embodiments, the extension portion is located on a side of the conductive connection portion facing away from the substrate.

[0026] Optionally, the conductive connection portion covers an edge of the light-emitting functional portion.

[0027] In some embodiments, the extending portion is located on a side of the conductive connecting portion close to the substrate.

[0028] Optionally, the first electrode portion covers the light emitting functional portion.

[0029] Optionally, the extension portion is connected to the isolation structure.

[0030] In some embodiments, the isolation structure includes an isolation body and a blocking portion; the blocking portion is located on a side of the isolation body facing away from the substrate, an end of the blocking portion close to the first opening extends toward the center of the first opening and protrudes from a side wall of the isolation body close to the first opening; the conductive connecting portion is connected to the isolation body.

[0031] Optionally, an orthographic projection of the isolating body on the substrate is located within an orthographic projection of the blocking portion on the substrate.

[0032] Optionally, the material of the isolator includes a conductive material.

[0033] Optionally, the material of the blocking portion includes a conductive material.

[0034] Optionally, the material of the blocking portion includes insulating material.

[0035] In some embodiments, the conductive connecting portion covers at least a portion of a side wall of the isolation body close to the first opening.

[0036] Optionally, the insulator comprises at least one metal layer.

[0037] Optionally, the insulator comprises a first metal layer and a second metal layer stacked in a direction away from the substrate, and an orthographic projection of the second metal layer on the substrate is located within an orthographic projection of the first metal layer on the substrate.

[0038] Optionally, the conductive connection portion covers a side wall of the first metal layer close to the first opening and a portion of a side wall of the second metal layer close to the first opening.

[0039] Optionally, the conductive connecting portion covers a portion of a side wall of the second metal layer close to the first opening.

[0040] In some embodiments, the display panel further includes a second electrode portion; the second electrode portion is disposed on a side of the light-emitting functional portion close to the substrate; and the second electrode portion is electrically insulated from the isolation structure.

[0041] Optionally, the display panel also includes a first insulating layer, which is arranged between the second electrode portion and the isolation structure; a second opening is opened on the first insulating layer, and the second opening corresponds to the first opening; at least part of the light-emitting functional portion is arranged in the second opening; and the second opening exposes the second electrode portion.

[0042] Optionally, the orthographic projection of the isolation structure on the substrate is located at a periphery of the orthographic projection of the second opening on the substrate.

[0043] Optionally, the material of the first insulating layer includes inorganic material.

[0044] In some embodiments, the display panel further includes a first encapsulation layer, wherein the first encapsulation layer covers the first electrode portion and the conductive connection portion.

[0045] Optionally, the display panel further includes a second encapsulation layer and a third encapsulation layer, the second encapsulation layer covers the first encapsulation layer and the isolation structure; the third encapsulation layer covers the second encapsulation layer.

[0046] Optionally, the first encapsulation layer is an inorganic encapsulation layer; the second encapsulation layer is an organic encapsulation layer; and the third encapsulation layer is an inorganic encapsulation layer.

[0047] According to another aspect of the present application, a method for manufacturing a display panel is provided, comprising:

[0048] providing a substrate;

[0049] forming an isolation structure on one side of the substrate, wherein the isolation structure defines a first opening;

[0050] forming a light-emitting functional portion in the first opening;

[0051] A first electrode portion and a conductive connection portion are formed in the first opening; the conductive connection portion is located at the edge of the light-emitting functional portion and connected to the isolation structure; the first electrode portion is located on a side of the light-emitting functional portion away from the substrate and connected to the conductive connection portion.

[0052] The manufacturing method of the display panel provided in the embodiment of the present application is by forming a first electrode portion and a conductive connection portion in a first opening; the conductive connection portion is located at the edge of the light-emitting functional portion and is connected to the isolation structure; the first electrode portion is located on the side of the light-emitting functional portion away from the substrate and is connected to the conductive connection portion; in this way, the first electrode portion can be electrically connected to the isolation structure through the conductive connection portion, thereby improving the reliability of the connection between the first electrode portion and the isolation structure, thereby reducing the probability of dark spots on the display panel, improving the poor display of the display panel, and improving the display quality of the display panel.

[0053] In some embodiments, the step of forming the first electrode portion and the conductive connection portion in the first opening includes:

[0054] A first electrode portion is formed on a side of the light-emitting functional portion facing away from the substrate, and a conductive connection portion connected to the isolation structure is formed at an edge of the light-emitting functional portion; the first electrode portion includes a first main portion and an extension portion that are connected to each other, and the first main portion is located on a surface of the light-emitting functional portion that faces away from the substrate; the extension portion extends in a direction close to the isolation structure, and the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the conductive connection portion on the substrate.

[0055] In some embodiments, the step of forming a first electrode portion on a side of the light-emitting functional portion facing away from the substrate, and forming a conductive connection portion connected to the isolation structure at an edge of the light-emitting functional portion includes:

[0056] forming the conductive connection portion connected to the isolation structure at the edge of the light-emitting functional portion;

[0057] A first electrode portion is formed on a side of the light-emitting functional portion away from the substrate; the first electrode portion includes a first main portion and an extension portion that are connected to each other, the first main portion is located on a surface of the light-emitting functional portion away from the substrate, and the extension portion is located on a side of the conductive connecting portion away from the substrate; the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the conductive connecting portion on the substrate.

[0058] In some embodiments, the step of forming a first electrode portion on a side of the light-emitting functional portion facing away from the substrate, and forming a conductive connection portion connected to the isolation structure at an edge of the light-emitting functional portion includes:

[0059] The first electrode portion is formed on a side of the light-emitting functional portion away from the substrate; the first electrode portion includes a first main body portion and an extension portion connected to each other, the first main body portion is located on a surface of the light-emitting functional portion away from the substrate; the extension portion extends in a direction close to the isolation structure;

[0060] A conductive connection portion connected to the isolation structure is formed at the edge of the light-emitting functional portion. The conductive connection portion is located on a side of the extension portion away from the substrate. The orthographic projection of the conductive connection portion on the substrate overlaps with the orthographic projection of the extension portion on the substrate.

[0061] In some embodiments, the step of forming a conductive connection portion connected to the isolation structure at the edge of the light-emitting functional portion includes:

[0062] A mask plate is provided, wherein the mask plate comprises a mask plate body and a sub-mask plate, wherein a third opening is formed through the mask plate body; the sub-mask plate is located at the third opening and connected to the mask plate body, and at least one evaporation opening is defined between the sub-mask plate and the mask plate body;

[0063] The mask plate is arranged on a side of the isolation structure away from the substrate; the sub-mask plate covers a part of the first opening; and the evaporation opening exposes another part of the first opening;

[0064] The conductive connection portion connected to the isolation structure is formed at the edge of the light-emitting functional portion by using an evaporation process.

[0065] According to another aspect of the present application, a mask plate is provided for evaporating a film layer in a first opening of an isolation structure on a substrate; the mask plate comprises a mask plate main body and a sub-mask plate, and a third opening is opened through the mask plate main body; the sub-mask plate is located at the third opening and is connected to the mask plate main body, and at least one evaporation opening is defined between the sub-mask plate and the mask plate main body; the sub-mask plate is used to cover a part of the first opening; and the evaporation opening is used to expose another part of the first opening.

[0066] The mask plate provided in the embodiment of the present application has a sub-mask plate located in the third opening and connected to the mask plate body, and at least one evaporation opening is defined between the sub-mask plate and the mask plate body; the sub-mask plate is used to cover a part of the first opening; the evaporation opening is used to expose another part of the first opening, so that when the conductive connection part is manufactured by the evaporation process, the conductive connection part located at the edge of the light-emitting functional part and connected to the isolation structure can be conveniently formed through the evaporation opening, and the first electrode part is connected to the isolation structure through the conductive connection part, thereby improving the reliability of the connection between the first electrode part and the isolation structure, thereby reducing the probability of dark spots on the display panel, improving the poor display of the display panel, and improving the display quality of the display panel.

[0067] In some embodiments, the sub-mask plate includes a second main body portion and a connecting portion, the second main body portion is located in the third opening, and the connecting portion connects the second main body portion and the mask plate body; the evaporation opening is defined between the connecting portion, the second main body portion and the mask plate body.

[0068] Optionally, there are a plurality of the connection parts, which are arranged at intervals around the second main body; and the evaporation opening is defined between two adjacent connection parts, the second main body and the mask plate body.

[0069] Optionally, the side wall of the second main body is arranged to be inclined.

[0070] Optionally, the third opening is used to correspond to the first opening on the isolation structure.

[0071] Optionally, the mask plate body is used to shield the isolation structure.

[0072] In some embodiments, a scattering layer is disposed on the side wall of the second main body.

[0073] Optionally, the scattering layer comprises a concave-convex structure.

[0074] In some embodiments, a protective layer is disposed on the side wall of the second main body portion, and a concave-convex structure is disposed on a surface of the protective layer facing away from the second main body portion.

[0075] Optionally, the material of the protective layer includes stainless steel or nickel steel alloy.

[0076] According to another aspect of the present application, a display panel is provided, comprising:

[0077] substrate;

[0078] An isolation structure, disposed on one side of the substrate and defining a first opening;

[0079] A light-emitting functional portion, disposed at the first opening;

[0080] The first electrode layer includes a first sub-section and a second sub-section connected to each other; the first sub-section is located on the surface of the light-emitting functional section away from the substrate; the second sub-section is located at the edge of the light-emitting functional section and connected to the isolation structure; the thickness of the second sub-section is greater than the thickness of the first sub-section.

[0081] The display panel provided by the embodiment of the present application is configured such that the first electrode layer includes a first sub-portion and a second sub-portion that are interconnected; the first sub-portion is located on the surface of the light-emitting functional portion that is away from the substrate; the second sub-portion is located at the edge of the light-emitting functional portion and is connected to the isolation structure; the thickness of the second sub-portion is greater than the thickness of the first sub-portion. In this way, the reliability of the connection between the second sub-portion and the isolation structure can be improved, thereby improving the reliability of the connection between the first electrode layer and the isolation structure, thereby reducing the probability of dark spots on the display panel, improving the poor display of the display panel, improving the display effect of the display panel, and enhancing the display quality of the display panel.

[0082] In some embodiments, the second sub-portion overlaps a side wall of the isolation structure close to the first opening.

[0083] Optionally, the second sub-portion is in an "L" shape and overlaps with the side wall of the isolation structure;

[0084] Optionally, an orthographic projection of the second sub-portion on the substrate does not overlap with an orthographic projection of the light-emitting area of ​​the light-emitting functional portion on the substrate.

[0085] Optionally, the second sub-section is an annular structure and is located outside the first sub-section.

[0086] Optionally, the first sub-section covers the light emitting area of ​​the light emitting functional section.

[0087] Optionally, the light-emitting functional part includes a plurality of functional layers, and there is a distance between at least part of the functional layers and the isolation structure.

[0088] In some embodiments, the second sub-section includes a first sub-layer and a second sub-layer which are stacked; the first sub-layer and the first sub-section are arranged in the same layer and are connected to each other; and the second sub-layer is connected to the isolation structure.

[0089] Optionally, the second sub-layer overlaps a side wall of the isolation structure close to the first opening.

[0090] Optionally, the thickness of the second sub-layer is greater than or equal to the thickness of the first sub-portion.

[0091] Optionally, an orthographic projection of the first sub-layer on the substrate overlaps with an orthographic projection of the second sub-layer on the substrate.

[0092] Optionally, the orthographic projection of the first sub-layer on the substrate is annular, and the first sub-layer is located at the periphery of the first sub-portion.

[0093] Optionally, the orthographic projection of the second sub-layer on the substrate is ring-shaped.

[0094] Optionally, the second sub-layer includes a plurality of third sub-portions, the third sub-portions are arranged in a ring-shaped manner, and at least one of the third sub-portions is connected to the isolation structure.

[0095] In some embodiments, the first sub-layer is located on a side of the second sub-layer facing away from the substrate.

[0096] Optionally, the second sublayer covers an edge of the light-emitting functional part.

[0097] In some embodiments, the first sub-layer is located on a side of the second sub-layer close to the substrate.

[0098] Optionally, the first sub-layer and the first sub-portion jointly cover the light-emitting functional portion.

[0099] Optionally, the first sublayer is connected to the isolation structure.

[0100] In some embodiments, the isolation structure includes an isolation body and a blocking portion; the blocking portion is located on a side of the isolation body facing away from the substrate, an end of the blocking portion close to the first opening extends toward the center of the first opening and protrudes from a side wall of the isolation body close to the first opening; the second sub-portion is connected to the isolation body.

[0101] Optionally, the orthographic projection of the isolating body on the substrate is located within the orthographic projection of the blocking portion on the substrate.

[0102] Optionally, the material of the isolator includes a conductive material.

[0103] Optionally, the material of the blocking portion includes a conductive material.

[0104] Optionally, the material of the blocking portion includes insulating material.

[0105] In some embodiments, the second sub-portion covers at least a portion of a side wall of the isolating body close to the first opening.

[0106] Optionally, the insulator comprises at least one metal layer.

[0107] Optionally, the insulator comprises a first metal layer and a second metal layer stacked in a direction away from the substrate, and an orthographic projection of the second metal layer on the substrate is located within an orthographic projection of the first metal layer on the substrate.

[0108] Optionally, the second sub-portion covers a side wall of the first metal layer close to the first opening and a portion of a side wall of the second metal layer close to the first opening.

[0109] According to another aspect of the present application, a display device is provided, comprising the display panel described in any of the above embodiments, thereby improving the display effect of the display device and enhancing the display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] Figure 1 A cross-sectional view of a display panel provided in accordance with an embodiment of the present application.

[0111] Figure 2 for Figure 1 Another cross-sectional view of the display panel shown.

[0112] Figure 3 A cross-sectional view of a display panel provided according to another embodiment of the present application.

[0113] Figure 4 for Figure 3 Another cross-sectional view of the display panel shown in .

[0114] Figure 5 A top view of a display panel provided in accordance with an embodiment of the present application.

[0115] Figure 6 A top view of a display panel provided according to another embodiment of the present application.

[0116] Figure 7 A cross-sectional view of a display panel provided in yet another embodiment of the present application.

[0117] Figure 8 A cross-sectional view of a display panel provided in yet another embodiment of the present application.

[0118] Fig. 9 A top view of a display panel provided in yet another embodiment of the present application.

[0119] Fig.10 A top view of a display panel provided in yet another embodiment of the present application.

[0120] Fig.11 It is a schematic structural diagram of depositing a conductive connection portion in a first opening of an isolation structure using a mask plate.

[0121] Fig.12 A schematic diagram of the structure of a mask plate provided in one embodiment of the present application.

[0122] Fig.13 A schematic structural diagram of the second main body of a sub-mask provided in one embodiment of the present application.

[0123] Fig.14 A flowchart of a method for manufacturing a display panel provided in one embodiment of the present application.

[0124] Fig.15 This is a flow chart of a method for manufacturing a display panel provided in another embodiment of the present application.

[0125] Fig.16 for Fig.15 Another flow chart of a method for manufacturing a display panel is shown.

[0126] Fig.17 for Fig.15 Another flow chart of the method for manufacturing a display panel is shown.

[0127] Fig.18 A schematic diagram of the structure of a display device provided in some embodiments of the present application.

[0128] Description of reference numerals:

[0129] 1. Display device;

[0130] 10. display panel; 11. substrate; 12. isolation structure; 12a. first opening; 121. isolation body; 1211. first metal layer; 1212. second metal layer; 122. blocking part; 13. light emitting functional part; 14. conductive connecting part; 141. segment; 15. first electrode part; 151. first main body part; 152. extension part; 16. second electrode part; 17. first insulating layer; 17a. second opening; 181. first encapsulation layer; 182. second encapsulation layer; 183. third encapsulation layer; 19. first electrode layer; 191. first sub-part; 192. second sub-part; 1921. first sub-layer; 1922. second sub-layer; 1922a. third sub-part;

[0131] 20. Mask plate; 21. Mask plate body; 21a. Third opening; 22. Sub-mask plate; 221. Second main body; 222. Connecting part; 23. Evaporation opening; 24. Protective layer; 25. Concavo-convex structure. DETAILED DESCRIPTION

[0132] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0133] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0134] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there can be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly below or there can be one or more light-emitting units. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there can be one or more light-emitting units.

[0135] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0136] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0137] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0138] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0139] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0140] Organic Light-Emitting Diode (OLED) display devices have been listed as a display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency and flexible display.

[0141] However, the display panel of the related art has the problem of poor display. The inventors have found through research that the cause of the above problem is that when evaporating the cathode, due to the limitation of factors such as the cathode evaporation angle, the overlap effect between the cathode and the isolation structure is poor, which makes the display panel prone to display problems such as dark spots.

[0142] Based on the above technical problems, the present application provides a display panel and a manufacturing method thereof and a display device capable of improving display defects. The composition, preparation and other contents of the isolation structure mentioned below are described in patents PCT / CN2023 / 134518, 202310759370.2, 202310740412.8, 202310707209.0, 202311346196.5, and 202310909421.5, and the contents are incorporated into this application by reference for reference.

[0143] First, see Figures 1 to 4The embodiment of the present application provides a display panel 10, including a substrate 11, an isolation structure 12, a light-emitting functional portion 13, a conductive connection portion 14 and a first electrode portion 15; the isolation structure 12 is arranged on one side of the substrate 11 and defines a first opening 12a; the light-emitting functional portion 13 is arranged in the first opening 12a; the conductive connection portion 14 is arranged in the first opening 12a; the conductive connection portion 14 is located at the edge of the light-emitting functional portion 13 and is connected to the isolation structure 12; the first electrode portion 15 is arranged on the side of the light-emitting functional portion 13 away from the substrate 11, and is connected to the conductive connection portion 14.

[0144] Specifically, the display panel 10 may be an organic light emitting diode display panel (Organic Light Emitting Diode, referred to as OLED), a quantum dot electroluminescent display panel (Quantum Dot Light Emitting Diodes, referred to as QLED), or the like.

[0145] The substrate 11 may be an array substrate 11. The substrate 11 may include a substrate and a driving circuit layer disposed on the substrate. The substrate may be a rigid substrate or a flexible substrate. When the substrate is a rigid substrate, the material of the substrate may be glass or silicon wafer, etc. When the substrate is a flexible substrate, the material of the substrate may be polyimide. The driving circuit layer includes a pixel driving circuit, and the pixel driving circuit includes a thin film transistor.

[0146] It should be noted that, see Figure 5 and Figure 6 , the isolation structure 12 refers to a structure that can separate adjacent light-emitting functional parts 13. The isolation structure 12 can define a plurality of first openings 12a, the number of light-emitting functional parts 13 can be multiple, and the multiple light-emitting functional parts 13 can be arranged in a one-to-one correspondence in the multiple first openings 12a; the number of first electrode parts 15 can also be multiple, and the multiple first electrode parts 15 correspond one-to-one to the multiple light-emitting functional parts 13. The orthographic projection of the isolation structure 12 on the substrate 11 can be a grid shape. The isolation structure 12 can also be an independent ring shape. The isolation structure 12 can avoid crosstalk between light-emitting functional parts 13 of different colors, thereby improving the display effect of the display panel 10 and improving the display quality of the display panel 10.

[0147] It should be noted that the material of the isolation structure 12 includes a conductive material; the connection between the conductive connecting portion 14 and the isolation structure 12 includes an electrical connection between the conductive connecting portion 14 and the isolation structure 12; the first electrode portion 15 is arranged on the side of the light-emitting functional portion 13 away from the substrate 11 and is connected to the conductive connecting portion 14. In this way, the first electrode portion 15 can be electrically connected to the isolation structure 12 through the conductive connecting portion 14, which can improve the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0148] It is understandable that the light-emitting functional portion 13 includes multiple functional layers, including a light-emitting layer (Emissionlayer, EML), and may also include a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole blocking layer (HBL) and an electron blocking layer (EBL) One or more. Alternatively, the light-emitting functional portion 13 may also be a laminated light-emitting layer, that is, including at least two light-emitting layers and a charge generation layer (CGL) located between each adjacent light-emitting layer. The first electrode portion 15 may be a cathode.

[0149] In summary, the display panel 10 provided in the embodiment of the present application is configured such that the conductive connecting portion 14 is disposed in the first opening 12a; the conductive connecting portion 14 is located at the edge of the light-emitting functional portion 13 and is connected to the isolation structure 12; the first electrode portion 15 is disposed on the side of the light-emitting functional portion 13 away from the substrate 11 and is connected to the conductive connecting portion 14. In this way, the first electrode portion 15 can be electrically connected to the isolation structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0150] See also Figures 1 to 4 In some embodiments, the conductive connecting portion 14 overlaps the sidewall of the isolation structure 12 near the first opening 12 a.

[0151] In this way, the connection between the conductive connecting portion 14 and the isolation structure 12 can be guaranteed. In this way, the first electrode portion 15 can be connected to the isolation structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0152] See also Figures 1 to 4 In some embodiments, the conductive connection portion 14 is in an “L” shape and overlaps the side wall of the isolation structure 12 .

[0153] Thus, the overlap area between the conductive connection part 14 and the side wall of the isolation structure 12 can be increased. On the one hand, the reliability of the connection between the conductive connection part 14 and the isolation structure 12 can be improved. The first electrode part 15 is electrically connected to the isolation structure 12 through the conductive connection part 14, thereby improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode part 15 can be reduced, thereby reducing the voltage drop between the multiple first electrode parts 15, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0154] See also Figures 1 to 4 In some embodiments, the thickness of the conductive connection portion 14 is greater than or equal to the thickness of the first electrode portion 15 .

[0155] Thus, the overlapping height of the conductive connection part 14 on the side wall of the isolation structure 12 close to the first opening 12a can be increased, and the overlapping area of ​​the conductive connection part 14 and the side wall of the isolation structure 12 can be increased. In this way, on the one hand, the reliability of the connection between the conductive connection part 14 and the isolation structure 12 can be improved, and the first electrode part 15 is electrically connected to the isolation structure 12 through the conductive connection part 14, thereby improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, reducing the probability of displaying dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode part 15 can be reduced, thereby reducing the voltage drop between the multiple first electrode parts 15, and then improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0156] See also Figures 1 to 4 In some embodiments, the orthographic projection of the conductive connection portion 14 on the substrate 11 does not overlap with the orthographic projection of the light-emitting area of ​​the light-emitting functional portion 13 on the substrate 11 .

[0157] Thus, the conductive connection portion 14 can be prevented from affecting the light extraction efficiency of the light emitting functional portion 13 , thereby improving the display effect of the display panel 10 and further improving the display quality of the display panel 10 .

[0158] See also Figures 1 to 4 It should be noted that the "luminous area" of the luminous functional part 13 refers to: the area on the luminous functional part 13 that plays the main role in luminescence. In one example, a pixel defining layer is provided on the substrate 11, and a pixel opening is provided on the pixel defining layer. An anode corresponding to the luminous functional part 13 is provided on the side of the pixel opening close to the substrate 11, and the luminous functional part 13 located in the pixel opening is in contact with the anode. The luminous functional part 13 located outside the pixel opening is not in direct contact with the anode, and the light emitted by this part of the luminous functional part 13 is weak or even does not emit light. Therefore, the "luminous area" refers to the area where the luminous functional part 13 located in the pixel opening and in direct contact with the anode is located.

[0159] See also Figure 5 In some embodiments, the conductive connection portion 14 includes a plurality of segments 141 , the plurality of segments 141 are arranged in a ring-shaped manner, and at least one segment 141 is connected to the isolation structure 12 .

[0160] Thus, the connection between the conductive connecting portion 14 and the isolation structure 12 can be guaranteed, and the first electrode portion 15 can be electrically connected to the isolation structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, improving the display effect of the display panel 10, and improving the display quality of the display panel 10.

[0161] See also Figure 6 In some embodiments, the conductive connecting portion 14 is a ring-shaped structure.

[0162] Thus, the area of ​​the conductive connection portion 14 overlapping the side wall of the isolation structure 12 near the first opening 12a can be increased. Thus, on the one hand, the reliability of the connection between the conductive connection portion 14 and the isolation structure 12 can be improved, so that the first electrode portion 15 can be electrically connected to the isolation structure 12 through the conductive connection portion 14, and the reliability of the connection between the first electrode portion 15 and the isolation structure 12 can be improved, thereby effectively reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode portion 15 can be further reduced, thereby reducing the voltage drop between the multiple first electrode portions 15, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0163] See also Figures 1 to 4 , Figure 7 and Figure 8 In some embodiments, the light-emitting functional portion 13 includes multiple functional layers, and at least part of the functional layers are spaced apart from the isolation structure 12 .

[0164] In this way, it can be ensured that the film layers of the light-emitting functional parts 13 of different colors are insulated from each other, thereby avoiding the problem of current crosstalk between the light-emitting functional parts 13 of different colors, and ensuring that when the light-emitting functional parts 13 of the corresponding color are lit, the current will not be transmitted laterally to the adjacent light-emitting functional parts 13, thereby preventing the display panel 10 from having color crosstalk, improving the display effect of the display panel 10, and enhancing the display quality of the display panel 10.

[0165] In some embodiments, the conductive connection portion 14 is made of metal or alloy. In a specific example, the conductive connection portion 14 is made of magnesium, aluminum, calcium or alloy, and the alloy may be one of magnesium-silver alloy and aluminum-lithium alloy.

[0166] In some embodiments, the material of the conductive connection portion 14 is the same as the material of the first electrode portion 15 .

[0167] See also Figures 1 to 4 In some embodiments, the orthographic projection of the first electrode portion 15 on the substrate 11 overlaps with the orthographic projection of the conductive connection portion 14 on the substrate 11 .

[0168] In this way, the connection between the first electrode portion 15 and the conductive connecting portion 14 can be guaranteed. In this way, the first electrode portion 15 is electrically connected to the isolation structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0169] See also Figures 1 to 4 In some embodiments, the first electrode portion 15 at least covers at least a portion of the surface of the light emitting functional portion 13 facing away from the substrate 11 .

[0170] Thus, the normal light emission of the light emitting functional portion 13 can be ensured, and the normal display of the display panel 10 can be ensured.

[0171] See also Figures 1 to 6 In some embodiments, the first electrode portion 15 includes a first main portion 151 and an extension portion 152 that are connected to each other, the first main portion 151 is arranged on the surface of the light-emitting functional portion 13 away from the substrate 11; the extension portion 152 extends in a direction close to the isolation structure 12, and the orthographic projection of the extension portion 152 on the substrate 11 overlaps with the orthographic projection of the conductive connection portion 14 on the substrate 11.

[0172] Therefore, while ensuring the normal light emission of the light-emitting functional portion 13, the first electrode portion 15 is connected to the conductive connecting portion 14 through the extension portion 152, so that the first electrode portion 15 is connected to the isolation structure 12, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0173] See also Figures 1 to 4 In some embodiments, the first main body portion 151 covers the light emitting area of ​​the light emitting functional portion 13 .

[0174] Thus, while ensuring the normal light emission of the light emitting functional portion 13 , the light extraction efficiency of the light emitting functional portion 13 is also ensured, thereby improving the display quality of the display panel 10 .

[0175] See also Figure 5 and Figure 6 In some embodiments, the extension portion 152 is annular and is located at the periphery of the first main body portion 151 .

[0176] Thus, the first electrode portion 15 is connected to the conductive connecting portion 14 via the annular extension portion 152, which can improve the reliability of the connection between the first electrode portion 15 and the conductive connecting portion 14, ensure the connection between the first electrode portion 15 and the isolation structure 12, and improve the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0177] See also Figure 1 , Figure 2 and Figure 6 In some embodiments, the extension portion 152 is located on a side of the conductive connection portion 14 facing away from the substrate 11 .

[0178] That is to say, the conductive connection part 14 is manufactured before the first electrode part 15. Thus, when manufacturing the conductive connection part 14, the distance between the side of the isolation structure 12 close to the substrate 11 (the surface of the blocking part 122 close to the substrate 11) and the substrate 11 is relatively large, so that the evaporation angle range of the conductive connection part 14 is relatively large, thereby facilitating the manufacturing of the conductive connection part 14. The manufactured conductive connection part 14 may have a relatively large thickness, and the conductive connection part 14 may have a relatively large overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the conductive connection part 14 and the isolation structure 12, and improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, thereby effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10. In addition, when manufacturing the first electrode portion 15 , the first electrode portion 15 is easily overlapped on the side of the conductive connection portion 14 away from the substrate 11 , so that the manufacturing time of the first electrode portion 15 can be shortened, the usage of the first electrode material can be reduced, and the manufacturing cost of the display panel 10 can be reduced.

[0179] See 1 to Figure 2 In some embodiments, the conductive connection portion 14 covers the edge of the light-emitting functional portion 13 .

[0180] Thereby, the overlapping area of ​​the orthographic projection of the conductive connecting portion 14 on the substrate 11 and the orthographic projection of the extending portion 152 on the substrate 11 can be increased, so that the reliability of the connection between the first electrode portion 15 and the conductive connecting portion 14 can be improved, thereby ensuring the connection between the first electrode portion 15 and the isolation structure 12, improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, and further reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0181] See also Figures 3 to 5 In some embodiments, the extension portion 152 is located on a side of the conductive connection portion 14 close to the substrate 11 .

[0182] Therefore, that is to say, the first electrode portion 15 is made before the conductive connection portion 14, that is, the conductive connection portion 14 is deposited on the side of the extension portion 152 of the first electrode portion 15 away from the substrate 11. In this way, on the one hand, the reliability of the connection between the conductive connection portion 14 and the extension portion 152 can be improved, thereby improving the reliability of the connection between the first electrode portion 15 and the conductive connection portion 14; on the other hand, in order to improve the light transmittance of the first electrode portion 15, the thickness of the first electrode portion 15 is relatively small. In this way, even if the first electrode portion 15 is made before the conductive connection portion 14, the conductive connection portion 14 can still have a larger evaporation angle. range, so as to facilitate the production of the conductive connection part 14. The produced conductive connection part 14 can have a larger thickness, and the conductive connection part 14 has a larger overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the conductive connection part 14 and the isolation structure 12, thereby ensuring the connection between the first electrode part 15 and the isolation structure 12, improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, and further effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0183] See also Figure 3 to Figure 4 In some embodiments, the first electrode portion 15 covers the light emitting functional portion 13 .

[0184] Thus, the normal light emission of the light emitting functional portion 13 can be ensured, and the normal display of the display panel 10 can be ensured.

[0185] See also Figure 3 to Figure 4 In some embodiments, the extension portion 152 is connected to the isolation structure 12. Specifically, the extension portion 152 overlaps the side wall of the isolation structure 12 near the first opening 12a.

[0186] In this way, the connection between the first electrode portion 15 and the isolation structure 12 can be ensured, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the display quality of the display panel 10, and improving the display quality of the display panel 10.

[0187] See also Figures 1 to 4 In some embodiments, the isolation structure 12 includes an isolation body 121 and a blocking portion 122; the blocking portion 122 is located on the side of the isolation body 121 away from the substrate 11, and one end of the blocking portion 122 close to the first opening 12a extends toward the center of the first opening 12a and protrudes from the side wall of the isolation body 121 close to the first opening 12a; the conductive connecting portion 14 is connected to the isolation body 121.

[0188] Thus, a certain distance can be created between the bottom surface edge of the blocking portion 122 and the top surface edge of the isolating body 121, so that the portion of the blocking portion 122 that extends beyond the edge of the isolating body 121 forms a step structure. The step structure is beneficial for isolating the light-emitting functional portions 13 formed on different sides of the isolating structure 12 from each other during the evaporation process, thereby avoiding crosstalk between light-emitting functional portions 13 of different colors, thereby improving the display effect of the display panel 10 and enhancing the display quality of the display panel 10.

[0189] See also Figures 1 to 4 In some embodiments, the orthographic projection of the isolator 121 on the substrate 11 is located within the orthographic projection of the blocking portion 122 on the substrate 11 .

[0190] Thus, the isolation structure 12 can form an undercut structure with a "large top and small bottom", and the isolation structure 12 corresponding to the first opening 12a can have a "roof", so that the adjacent light-emitting functional parts 13 can be separated during the evaporation process, thereby avoiding crosstalk between light-emitting functional parts 13 of different colors, thereby improving the display effect of the display panel 10 and enhancing the display quality of the display panel 10.

[0191] In some embodiments, the material of the isolator 121 includes a conductive material.

[0192] Thus, the first electrode portion 15 can be electrically connected to the insulator 121 through the conductive connection portion 14 , thereby reducing the probability of dark spots on the display panel 10 , improving the display defects of the display panel 10 , and enhancing the display quality of the display panel 10 .

[0193] In some embodiments, the material of the barrier 122 includes a conductive material. In one example, the barrier 122 may be a metal structure, that is, the material of the barrier 122 is metal, for example, the barrier 122 may be a conductive metal material such as silver, copper, titanium, aluminum, etc.

[0194] Thus, on the one hand, the strength and hardness of the barrier 122 can be improved, so that the barrier 122 is not easy to collapse during the partition structure forming process, and the projection relationship between the barrier 122 and the isolator 121 on the substrate 11 is ensured, which is conducive to obtaining a partition structure of a desired shape. On the other hand, the resistance of the isolation structure 12 can be reduced, thereby reducing the power consumption of the display panel 10.

[0195] In some embodiments, the material of the blocking portion 122 includes an insulating material. For example, the material of the blocking portion 122 may be an inorganic material, such as silicon nitride, silicon oxide, and the like.

[0196] Therefore, when a conductive film layer is provided on the side of the isolation structure 12 facing away from the substrate 11, the isolation structure 12 can utilize its own blocking portion 122 to be electrically insulated from the conductive film layer without the need to separately provide an insulating film layer to achieve electrical insulation, thereby facilitating a reduction in the thickness of the display panel 10.

[0197] See also Figures 1 to 4 In some embodiments, the conductive connecting portion 14 covers at least a portion of the sidewall of the isolation body 121 close to the first opening 12 a.

[0198] In this way, the connection between the conductive connecting portion 14 and the isolation structure 12 can be guaranteed. In this way, the first electrode portion 15 can be connected to the isolation structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0199] See also Figures 1 to 4 In some embodiments, the spacer 121 includes at least one metal layer.

[0200] In one example, the material of the metal layer includes at least one of a metal and a metal oxide. For example, the metal may be silver, copper, titanium, aluminum, etc. The metal oxide may be tin oxide, zinc oxide, cadmium oxide, indium oxide, indium tin oxide, zinc indium oxide, zinc gallium oxide, zinc aluminum oxide, titanium tantalum oxide, etc.

[0201] See also Figures 1 to 4 In some embodiments, the separator 121 includes a first metal layer 1211 and a second metal layer 1212 stacked in a direction away from the substrate 11, and the orthographic projection of the second metal layer 1212 on the substrate 11 is located within the orthographic projection of the first metal layer 1211 on the substrate 11. Here, the first metal layer 1211 and the second metal layer 1212 are stacked in sequence in a direction away from the substrate 11. In one example, the material of the first metal layer 1211 can be Mo, and the material of the second metal layer 1212 can be Al.

[0202] See also Figure 1 to Figure 2 In some embodiments, the conductive connection portion 14 covers the sidewall of the first metal layer 1211 close to the first opening 12 a and a portion of the sidewall of the second metal layer 1212 close to the first opening 12 a .

[0203] In this way, the reliability of the connection between the conductive connecting portion 14 and the isolating body 121 can be improved. The first electrode portion 15 is electrically connected to the isolating structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolating structure 12, reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0204] See also Figure 3 to Figure 4 In some embodiments, the conductive connection portion 14 covers a portion of the sidewall of the second metal layer 1212 close to the first opening 12 a.

[0205] In this way, the reliability of the connection between the conductive connecting portion 14 and the isolating body 121 can be improved. The first electrode portion 15 is electrically connected to the isolating structure 12 through the conductive connecting portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolating structure 12, reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0206] See also Figures 1 to 4 , Figure 7 and Figure 8 In some embodiments, the display panel 10 further includes a second electrode portion 16; the second electrode portion 16 is disposed on a side of the light emitting functional portion 13 close to the substrate 11; the second electrode portion 16 is electrically insulated from the isolation structure 12. In a specific example, the second electrode portion 16 may be an anode.

[0207] See also Figures 1 to 4 , Figure 7 and Figure 8 In some embodiments, the display panel 10 further includes a first insulating layer 17, which is disposed between the second electrode portion 16 and the isolation structure 12; a second opening 17a is provided on the first insulating layer 17, and the second opening 17a corresponds to the first opening 12a; at least a portion of the light-emitting functional portion 13 is disposed in the second opening 17a; and the second opening 17a exposes the second electrode portion 16.

[0208] Therefore, by providing the first insulating layer 17 between the second electrode portion 16 and the isolation structure 12, the second electrode portion 16 and the isolation structure 12 as well as adjacent second electrode portions 16 can be insulated from each other; by providing a second opening 17a on the first insulating layer 17, the second opening 17a corresponds to the first opening 12a; at least a part of the light-emitting functional portion 13 is provided in the second opening 17a; the second opening 17a exposes the second electrode portion 16 layer, thus ensuring that the light-emitting functional portion 13 is in direct contact with the second electrode portion 16, ensuring normal light emission of the light-emitting functional portion 13, and thus ensuring normal display of the display panel 10.

[0209] In a specific example, the first insulating layer 17 may be a pixel definition layer PDL, and the second opening 17 a is a pixel opening.

[0210] In another specific example, the first insulating layer 17 may also be other insulating film layers.

[0211] In another specific example, the material of the first insulating layer 17 includes an inorganic material, such as silicon oxide, silicon nitride, etc.

[0212] Therefore, the first insulating layer 17 can isolate water vapor and oxygen, thereby improving the reliability of the display panel 10 .

[0213] See also Figures 1 to 4 , Figure 7 and Figure 8 In some embodiments, the orthographic projection of the isolation structure 12 on the substrate 11 is located at the periphery of the orthographic projection of the second opening 17 a on the substrate 11 .

[0214] Thus, it is possible to avoid the isolation structure 12 limiting the light emission angle of the light emitting functional part 13 .

[0215] See also Figure 2 , Figure 4 In some embodiments, the display panel 10 further includes a first encapsulation layer 181 , and the first encapsulation layer 181 covers the first electrode portion 15 and the conductive connection portion 14 .

[0216] Thus, the first encapsulation layer 181 can encapsulate the light-emitting functional part 13, the first electrode part 15 and the conductive connection part 14, thereby reducing the probability of water and oxygen corrosion of the light-emitting functional part 13, thereby improving the display effect of the display panel 10 and helping to extend the service life of the display panel 10.

[0217] See also Figure 2 , Figure 4 In some embodiments, the display panel 10 further includes a second encapsulation layer 182 and a third encapsulation layer 183 , wherein the second encapsulation layer 182 covers the first encapsulation layer 181 and the isolation structure 12 ; and the third encapsulation layer 183 covers the second encapsulation layer 182 .

[0218] Thus, multi-layer encapsulation can be achieved through the first encapsulation layer 181 , the second encapsulation layer 182 and the third encapsulation layer 183 , thereby improving the encapsulation reliability, thereby improving the reliability of the display panel 10 , improving the display effect of the display panel 10 , and extending the service life of the display panel 10 .

[0219] In some embodiments, the first encapsulation layer 181 is an inorganic encapsulation layer; the second encapsulation layer 182 is an organic encapsulation layer; and the third encapsulation layer 183 is an inorganic encapsulation layer.

[0220] Thus, the display panel 10 can be protected by stacking the inorganic encapsulation layer and the organic encapsulation layer. Inorganic materials generally have good compactness and can isolate water vapor and oxygen. Organic materials have flexible characteristics. Using organic materials as a layer of the second encapsulation layer 182 can buffer stress from the outside, prevent the display panel 10 from being affected by external stress and affect the display effect. At the same time, it can reduce the risk of encapsulation failure caused by inorganic layer breakage.

[0221] Second, see Fig.14 The present application embodiment provides a method for manufacturing a display panel 10, including:

[0222] S10, providing a substrate 11;

[0223] S20, forming an isolation structure 12 on one side of the substrate 11, wherein the isolation structure 12 defines a first opening 12a;

[0224] S30, forming a light-emitting functional portion 13 in the first opening 12a;

[0225] S40, forming a first electrode portion 15 and a conductive connection portion 14 in the first opening 12a; the conductive connection portion 14 is located at the edge of the light-emitting functional portion 13 and connected to the isolation structure 12; the first electrode portion 15 is located on the side of the light-emitting functional portion 13 away from the substrate 11 and connected to the conductive connection portion 14.

[0226] The manufacturing method of the display panel 10 provided in the embodiment of the present application is by forming a first electrode portion 15 and a conductive connection portion 14 in the first opening 12a; the conductive connection portion 14 is located at the edge of the light-emitting functional portion 13 and is connected to the isolation structure 12; the first electrode portion 15 is located on the side of the light-emitting functional portion 13 away from the substrate 11 and is connected to the conductive connection portion 14; in this way, the first electrode portion 15 can be electrically connected to the isolation structure 12 through the conductive connection portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots in the display panel 10, improving the display defects of the display panel 10, and improving the display quality of the display panel 10.

[0227] See also Fig.15 In some embodiments, in S40, forming the first electrode portion 15 and the conductive connection portion 14 in the first opening 12a includes:

[0228] S410, forming a first electrode portion 15 on the side of the light-emitting functional portion 13 away from the substrate 11, and forming a conductive connection portion 14 connected to the isolation structure 12 on the edge of the light-emitting functional portion 13; the first electrode portion 15 includes a first main body portion 151 and an extension portion 152 that are connected to each other, and the first main body portion 151 is located on the surface of the light-emitting functional portion 13 away from the substrate 11; the extension portion 152 extends in a direction close to the isolation structure 12, and the orthographic projection of the extension portion 152 on the substrate 11 overlaps with the orthographic projection of the conductive connection portion 14 on the substrate 11.

[0229] Therefore, the first electrode portion 15 is connected to the conductive connecting portion 14 through the extension portion 152, so that the first electrode portion 15 is connected to the isolation structure 12, which can improve the reliability of the connection between the first electrode portion 15 and the isolation structure 12, and further reduce the probability of dark spots on the display panel 10, improve the poor display of the display panel 10, and improve the display quality of the display panel 10.

[0230] See also Fig.16 In some embodiments, in S410, a first electrode portion 15 is formed on a side of the light-emitting functional portion 13 away from the substrate 11, and a conductive connection portion 14 connected to the isolation structure 12 is formed on an edge of the light-emitting functional portion 13, including:

[0231] S411a, forming a conductive connection portion 14 connected to the isolation structure 12 at the edge of the light emitting functional portion 13;

[0232] S412a, forming a first electrode portion 15 on the side of the light-emitting functional portion 13 away from the substrate 11; the first electrode portion 15 includes a first main portion 151 and an extension portion 152 that are connected to each other, the first main portion 151 is located on the surface of the light-emitting functional portion 13 away from the substrate 11, and the extension portion 152 is located on the side of the conductive connecting portion 14 away from the substrate 11; the orthographic projection of the extension portion 152 on the substrate 11 overlaps with the orthographic projection of the conductive connecting portion 14 on the substrate 11.

[0233] That is to say, the conductive connection part 14 is manufactured before the first electrode part 15. Thus, when manufacturing the conductive connection part 14, the distance between the side of the isolation structure 12 close to the substrate 11 (the surface of the blocking part 122 close to the substrate 11) and the substrate 11 is relatively large, so that the evaporation angle range of the conductive connection part 14 is relatively large, thereby facilitating the manufacturing of the conductive connection part 14. The manufactured conductive connection part 14 may have a relatively large thickness, and the conductive connection part 14 may have a relatively large overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the conductive connection part 14 and the isolation structure 12, ensuring the connection between the first electrode part 15 and the isolation structure 12, thereby improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10. In addition, when manufacturing the first electrode portion 15 , the first electrode portion 15 is easily overlapped on the side of the conductive connection portion 14 away from the substrate 11 , so that the manufacturing time of the first electrode portion 15 can be shortened, the usage of the first electrode material can be reduced, and the manufacturing cost of the display panel 10 can be reduced.

[0234] See also Fig.17 In some embodiments, in S410, a first electrode portion 15 is formed on a side of the light-emitting functional portion 13 away from the substrate 11, and a conductive connection portion 14 connected to the isolation structure 12 is formed on an edge of the light-emitting functional portion 13, including:

[0235] S411b, forming a first electrode portion 15 on a side of the light-emitting functional portion 13 away from the substrate 11; the first electrode portion 15 includes a first main portion 151 and an extension portion 152 connected to each other, the first main portion 151 is located on a surface of the light-emitting functional portion 13 away from the substrate 11; the extension portion 152 extends in a direction close to the isolation structure 12;

[0236] S412b, forming a conductive connection portion 14 connected to the isolation structure 12 at the edge of the light-emitting functional portion 13, the conductive connection portion 14 is located on the side of the extension portion 152 away from the substrate 11, and the orthographic projection of the conductive connection portion 14 on the substrate 11 overlaps with the orthographic projection of the extension portion 152 on the substrate 11.

[0237] Therefore, that is to say, the first electrode portion 15 is made before the conductive connection portion 14, that is, the conductive connection portion 14 is deposited on the side of the extension portion 152 of the first electrode portion 15 away from the substrate 11. In this way, on the one hand, the reliability of the connection between the conductive connection portion 14 and the extension portion 152 can be improved, thereby improving the reliability of the connection between the first electrode portion 15 and the conductive connection portion 14; on the other hand, in order to improve the light transmittance of the first electrode portion 15, the thickness of the first electrode portion 15 is relatively small. In this way, even if the first electrode portion 15 is made before the conductive connection portion 14, the conductive connection portion 14 can still have a larger evaporation angle. range, so as to facilitate the production of the conductive connection part 14. The produced conductive connection part 14 can have a larger thickness, and the conductive connection part 14 has a larger overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the conductive connection part 14 and the isolation structure 12, thereby ensuring the connection between the first electrode part 15 and the isolation structure 12, improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, and further effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0238] See also Fig.11 In some embodiments, in S410, forming a conductive connection portion 14 connected to the isolation structure 12 at the edge of the light-emitting functional portion 13 includes:

[0239] A mask plate 20 is provided, the mask plate 20 includes a mask plate body 21 and a sub-mask plate 22, the mask plate body 21 is provided with a third opening 21a; the sub-mask plate 22 is located at the third opening 21a and connected to the mask plate body 21, and at least one evaporation opening 23 is defined between the sub-mask plate 22 and the mask plate 20 body;

[0240] The mask plate 20 is disposed on the side of the isolation structure 12 away from the substrate 11; the sub-mask plate 22 covers a portion of the first opening 12a; and the evaporation opening 23 exposes another portion of the first opening 12a;

[0241] A conductive connection portion 14 connected to the isolation structure 12 is formed at the edge of the light emitting functional portion 13 by using an evaporation process.

[0242] Thus, the sub-mask plate 22 of the mask plate 20 is used to cover a portion of the first opening 12a, and the evaporation opening 23 defined between the sub-mask plate 22 and the mask plate main body 21 exposes the other portion of the first opening 12a. The evaporation process is adopted and the conductive connection portion 14 located at the edge of the light-emitting functional portion 13 and connected to the isolation structure 12 can be conveniently formed through the evaporation opening 23, so that the first electrode portion 15 can be conveniently connected to the isolation structure 12 through the conductive connection portion 14, thereby improving the reliability of the connection between the first electrode portion 15 and the isolation structure 12, thereby reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0243] Thirdly, see Fig.12 The embodiment of the present application provides a mask plate 20 for evaporating a film layer in a first opening 12a of an isolation structure 12 on a substrate 11; the mask plate 20 includes a mask plate body 21 and a sub-mask plate 22, and a third opening 21a is formed through the mask plate body 21; the sub-mask plate 22 is located in the third opening 21a and is connected to the mask plate body 21, and at least one evaporation opening 23 is defined between the sub-mask plate 22 and the mask plate 20 body; the sub-mask plate 22 is used to cover a part of the first opening 12a; the evaporation opening 23 is used to expose another part of the first opening 12a.

[0244] The mask plate 20 provided in the embodiment of the present application has a sub-mask plate 22 located in the third opening 21a and connected to the mask plate body 21, and at least one evaporation opening 23 is defined between the sub-mask plate 22 and the mask plate 20 body; the sub-mask plate 22 is used to cover a part of the first opening 12a; the evaporation opening 23 is used to expose another part of the first opening 12a, so that when the conductive connection part 14 is manufactured by the evaporation process, the conductive connection part 14 located at the edge of the light-emitting functional part 13 and connected to the isolation structure 12 can be conveniently formed through the evaporation opening 23, and the first electrode part 15 is connected to the isolation structure 12 through the conductive connection part 14, thereby improving the reliability of the connection between the first electrode part 15 and the isolation structure 12, thereby reducing the probability of the display panel 10 displaying dark spots, improving the display defects of the display panel 10, and improving the display quality of the display panel 10.

[0245] See also Fig.12 In some embodiments, the sub-mask plate 22 includes a second main body portion 221 and a connecting portion 222, the second main body portion 221 is located in the third opening 21a, and the connecting portion 222 connects the second main body portion 221 and the mask plate body 21; a vapor deposition opening 23 is defined between the connecting portion 222, the second main body portion 221 and the mask plate body 21.

[0246] Thus, the connection between the sub-mask plate 22 and the mask plate main body 21 can be facilitated, and the evaporation opening 23 is defined between the sub-mask plate 22 and the mask plate main body 21 , which can improve the structural stability of the mask plate 20 .

[0247] See also Fig.12 In some embodiments, there are multiple connecting parts 222, and the multiple connecting parts 222 are arranged at intervals around the second main body 221; an evaporation opening 23 is defined between two adjacent connecting parts 222, the second main body 221 and the mask plate body 21.

[0248] Therefore, by setting a plurality of connecting parts 222, the connection reliability between the sub-mask plate 22 and the mask plate body 21 can be improved, the stability of the mask plate 20 structure can be improved, and a plurality of evaporation openings 23 can be defined between the sub-mask plate 22 and the mask plate body 21, thereby facilitating the production of the conductive connecting part 14.

[0249] See also Fig.13 In some embodiments, the side wall of the second main body portion 221 is inclined.

[0250] Thus, the evaporation angle range of the conductive connection part 14 during evaporation can be increased, so that the overlap height of the conductive connection part 14 on the side wall of the isolation structure 12 close to the first opening 12a is increased, thereby increasing the effective overlap area of ​​the conductive connection part 14 on the side wall of the isolation structure 12 close to the first opening 12a. In this way, on the one hand, the reliability of the connection between the conductive connection part 14 and the isolation structure 12 can be improved, which is conducive to the connection of the first electrode part 15 with the isolation structure 12 through the conductive connection part 14, and the reliability of the connection between the first electrode part 15 and the isolation structure 12 can be improved, effectively reducing the probability of display dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display quality of the display panel 10. On the other hand, the resistance of the first electrode part 15 can be reduced, and the voltage drop between the multiple first electrode parts 15 can be reduced, thereby improving the uniformity of the brightness of the display screen of the display panel 10 and improving the display quality of the display panel 10.

[0251] See also Fig.12 In some embodiments, the third opening 21 a is used to correspond to the first opening 12 a on the isolation structure 12 .

[0252] Thus, it is convenient to form a conductive connection portion 14 located at the edge of the light emitting functional portion 13 and connected to the isolation structure 12 in the first opening 12 a .

[0253] See also Fig.12 In a specific example, there are multiple third openings 21 a , and the multiple third openings 21 a are used to correspond one-to-one with the multiple first openings 12 a on the isolation structure 12 .

[0254] Thus, the conductive connection portions 14 can be simultaneously manufactured in the plurality of first openings 12 a , thereby improving the manufacturing efficiency of the display panel 10 .

[0255] In some embodiments, the mask body 21 is used to shield the isolation structure 12 .

[0256] Thus, the formation of conductive connection material on the surface of the isolation structure 12 facing away from the substrate 11 is avoided, thereby reducing the etching amount, improving the manufacturing efficiency of the display panel 10 and reducing the manufacturing cost of the display panel 10 .

[0257] In some embodiments, a scattering layer is disposed on the sidewall of the second main body portion 221. In a specific example, the scattering layer includes a concave-convex structure 25.

[0258] Thus, by providing a scattering layer, the conductive connection material can be scattered after colliding with the side wall of the second main body 221, and the evaporation angle of the conductive connection material can be changed, so that the overlap height of the conductive connection on the side wall of the isolation structure 12 close to the first opening 12a is increased, thereby greatly increasing the effective overlap area of ​​the conductive connection part 14 on the side wall of the isolation structure 12 close to the first opening 12a. In this way, on the one hand, the probability of displaying dark spots on the display panel 10 can be effectively reduced, the display defect of the display panel 10 can be improved, and the display quality of the display panel 10 can be improved. On the other hand, the resistance of the first electrode part 15 can be effectively reduced, and the voltage drop between the multiple first electrode parts 15 can be reduced, thereby further improving the uniformity of the brightness of the display screen of the display panel 10 and further improving the display quality of the display panel 10.

[0259] See also Fig.13 In some embodiments, a protection layer 24 is disposed on the side wall of the second main body portion 221 , and a concave-convex structure 25 is disposed on a surface of the protection layer 24 facing away from the second main body portion 221 .

[0260] Thus, the side wall of the second main body 221 can be protected by the protective layer 24, thereby extending the service life of the mask plate 20. In addition, the surface of the protective layer 24 facing away from the second main body 221 is provided with a concave-convex structure 25, which can change the evaporation angle of the conductive connection material, thereby greatly increasing the effective overlap area of ​​the conductive connection part 14 on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively reducing the probability of display dark spots on the display panel 10, improving the display defects of the display panel 10, improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0261] In some embodiments, the material of the protection layer 24 includes stainless steel or nickel steel alloy.

[0262] Fourthly, see Figure 7 and Figure 8 The embodiment of the present application provides a display panel 10, including a substrate 11, an isolation structure 12, a light-emitting functional part 13 and a first electrode layer 19; the isolation structure 12 is arranged on one side of the substrate 11 and defines a first opening 12a; the light-emitting functional part 13 is arranged in the first opening 12a; the first electrode layer 19 includes a first sub-part 191 and a second sub-part 192 connected to each other; the first sub-part 191 is located on the surface of the light-emitting functional part 13 away from the substrate 11; the second sub-part 192 is located at the edge of the light-emitting functional part 13 and is connected to the isolation structure 12; the thickness of the second sub-part 192 is greater than the thickness of the first sub-part 191.

[0263] The display panel 10 provided in the embodiment of the present application is configured such that the first electrode layer 19 includes a first sub-portion 191 and a second sub-portion 192 which are connected to each other; the first sub-portion 191 is located on the surface of the light-emitting functional portion 13 which is away from the substrate 11; the second sub-portion 192 is located at the edge of the light-emitting functional portion 13 and is connected to the isolation structure 12; the thickness of the second sub-portion 192 is greater than the thickness of the first sub-portion 191, thereby improving the reliability of the connection between the second sub-portion 192 and the isolation structure 12, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, improving the display effect of the display panel 10, and enhancing the display quality of the display panel 10.

[0264] See also Figure 7 and Figure 8 In some embodiments, the second sub-portion 192 overlaps the side wall of the isolation structure 12 near the first opening 12 a.

[0265] In this way, the connection between the second sub-portion 192 and the isolation structure 12 can be guaranteed. In this way, the first electrode layer 19 is connected to the isolation structure 12 through the second sub-portion 192, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0266] See also Figure 7 and Figure 8 In some embodiments, the second sub-portion 192 is in an “L” shape and overlaps the side wall of the isolation structure 12 .

[0267] Thus, the overlap area between the second sub-portion 192 and the side wall of the isolation structure 12 can be increased. On the one hand, the reliability of the connection between the second sub-portion 192 and the isolation structure 12 can be improved, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode layer 19 can be reduced, thereby reducing the voltage drop between the multiple first electrode layers, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0268] See also Figure 7 and Figure 8 In some embodiments, the orthographic projection of the second sub-portion 192 on the substrate 11 does not overlap with the orthographic projection of the light-emitting area of ​​the light-emitting functional portion 13 on the substrate 11 .

[0269] Thus, the second sub-portion 192 can be prevented from affecting the light extraction efficiency of the light emitting functional portion 13 , thereby improving the display effect of the display panel 10 and further improving the display quality of the display panel 10 .

[0270] See also Fig. 9 and Fig.10 In some embodiments, the second sub-portion 192 is a ring-shaped structure and is located outside the first sub-portion 191 .

[0271] Thus, the area of ​​the second sub-portion 192 overlapping the side wall of the isolation structure 12 near the first opening 12a can be increased. Thus, on the one hand, the reliability of the connection between the second sub-portion 192 and the isolation structure 12 can be improved, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby effectively reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode layer 19 can be further reduced, thereby reducing the voltage drop of the first electrode layer 19, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0272] See also Figures 7 to 10 In some embodiments, the first sub-portion 191 covers the light emitting area of ​​the light emitting functional portion 13 .

[0273] Thus, while ensuring the normal light emission of the light emitting functional portion 13 , the light extraction efficiency of the light emitting functional portion 13 is also ensured, thereby improving the display quality of the display panel 10 .

[0274] See also Figure 7 and Figure 8 In some embodiments, the light emitting functional portion 13 includes multiple functional layers, and at least some of the functional layers are spaced apart from the isolation structure 12 .

[0275] In this way, it can be ensured that the film layers of the light-emitting functional parts 13 of different colors are insulated from each other, thereby avoiding the problem of current crosstalk between the light-emitting functional parts 13 of different colors, and ensuring that when the light-emitting functional parts 13 of the corresponding color are lit, the current will not be transmitted laterally to the adjacent light-emitting functional parts 13, thereby preventing the display panel 10 from having color crosstalk, improving the display effect of the display panel 10, and enhancing the display quality of the display panel 10.

[0276] See also Figure 7 and Fig.10 In some embodiments, the second sub-section 192 includes a first sub-layer 1921 and a second sub-layer 1922 which are stacked; the first sub-layer 1921 and the first sub-section 191 are arranged in the same layer and are connected to each other; and the second sub-layer 1922 is connected to the isolation structure 12.

[0277] Therefore, that is to say, the first sublayer 1921 and the first sub-section 191 are manufactured simultaneously, and the second sublayer 1922 and the first sublayer 1921 are manufactured step by step. In this way, the connection between the first sub-section 191 and the second sub-section 192 can be easily realized. The second sub-section 192 is connected to the isolation structure 12 through the second sublayer 1922, so that the first electrode layer 19 is connected to the isolation structure 12, which can improve the reliability of the connection between the first electrode layer 19 and the isolation structure 12, and further can effectively reduce the probability of dark spots in the display panel 10, improve the poor display of the display panel 10, and improve the display effect of the display panel 10.

[0278] See also Figure 7 and Figure 8 In some embodiments, the second sub-layer 1922 overlaps the sidewall of the isolation structure 12 near the first opening 12 a.

[0279] Thus, the second sublayer 1922 can be connected to the isolation structure 12, thereby connecting the first electrode layer 19 to the isolation structure 12, which can improve the reliability of the connection between the first electrode layer 19 and the isolation structure 12, and further effectively reduce the probability of dark spots on the display panel 10, improve the poor display of the display panel 10, and improve the display effect of the display panel 10.

[0280] See also Figure 7 and Figure 8 In some embodiments, the thickness of the second sub-layer 1922 is greater than or equal to the thickness of the first sub-layer 191 .

[0281] Thus, the overlap height and overlap area of ​​the second sub-layer 1922 on the side wall of the isolation structure 12 near the first opening 12a can be increased. Thus, on the one hand, the reliability of the connection between the second sub-portion 192 and the isolation structure 12 can be improved, and the first electrode layer 19 is electrically connected to the isolation structure 12 through the second sub-layer 1922 of the second sub-portion 192, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode layer 19 can be reduced, thereby reducing the voltage drop of the first electrode layer 19, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0282] See also Fig. 9 and Fig.10 In some embodiments, the orthographic projection of the first sub-layer 1921 on the substrate 11 overlaps with the orthographic projection of the second sub-layer 1922 on the substrate 11 .

[0283] In this way, the connection between the first sublayer 1921 and the second sublayer 1922 can be guaranteed, thereby ensuring the connection between the first sub-portion 191 and the second sub-portion 192. The first electrode layer 19 is electrically connected to the isolation structure 12 through the second sublayer 1922 of the second sub-portion 192, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0284] See also Fig. 9 and Fig.10 In some embodiments, the orthographic projection of the first sub-layer 1921 on the substrate 11 is annular and is located at the periphery of the first sub-portion 191 .

[0285] In this way, the reliability of the connection between the first sublayer 1921 and the first sub-portion 191 and the second sublayer 1922 can be improved, thereby improving the reliability of the connection between the first sub-portion 191 and the second sub-portion 192, and further improving the reliability of the connection between the first electrode layer 19 as a whole and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0286] See also Fig. 9 In some embodiments, the orthographic projection of the second sub-layer 1922 on the substrate 11 is ring-shaped.

[0287] Thus, the area of ​​the second sublayer 1922 overlapping the side wall of the isolation structure 12 near the first opening 12a can be increased. Thus, on the one hand, the reliability of the connection between the second sublayer 1922 and the isolation structure 12 can be improved, and the first electrode layer 19 is connected to the isolation structure 12 through the second sublayer 1922, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby effectively reducing the probability of dark spots on the display panel 10, improving the display defects of the display panel 10, and improving the display effect of the display panel 10. On the other hand, the resistance of the first electrode layer 19 can be further reduced, thereby reducing the voltage drop of the first electrode layer 19, thereby improving the uniformity of the brightness of the display screen of the display panel 10, and improving the display quality of the display panel 10.

[0288] See also Fig.10 In some embodiments, the second sub-layer 1922 includes a plurality of third sub-portions 1922 a , the third sub-portions 1922 a are arranged in a ring-shaped manner, and at least one third sub-portion 1922 a is connected to the isolation structure 12 .

[0289] Therefore, the second sub-layer 1922 can be connected to the isolation structure 12 through the third sub-portion 1922a, and the first electrode layer 19 can be connected to the isolation structure 12 through the second sub-layer 1922, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, and further effectively reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0290] See also Figure 7 In some embodiments, the first sub-layer 1921 is located on a side of the second sub-layer 1922 facing away from the substrate 11 .

[0291] That is to say, the second sublayer 1922 is manufactured before the first sublayer 1921 and the first sub-portion 191. Thus, when manufacturing the second sublayer 1922, the distance between the side of the isolation structure 12 close to the substrate 11 (the surface of the blocking portion 122 close to the substrate 11) and the substrate 11 is relatively large, so that the evaporation angle range of the second sublayer 1922 is relatively large, thereby facilitating the manufacturing of the second sublayer 1922. The manufactured second sublayer 1922 may have a relatively large thickness, and the second sublayer 1922 has a relatively large overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the second sublayer 1922 and the isolation structure 12, and improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby effectively reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10. In addition, when the first sub-section 191 and the first sub-layer 1921 are manufactured simultaneously, the first sub-layer 1921 is easily overlapped with the side of the second sub-layer 1922 facing away from the substrate 11. In this way, the manufacturing time of the first sub-section 191 and the first sub-layer 1921 can be shortened, the material usage can be reduced, and the manufacturing cost of the display panel 10 can be reduced.

[0292] See also Figure 7 In some embodiments, the second sublayer 1922 covers the edge of the light emitting functional portion 13 .

[0293] In this way, the overlapping area between the orthographic projection of the second sub-layer 1922 on the substrate 11 and the orthographic projection of the first sub-layer 1921 on the substrate 11 can be increased, so that the reliability of the connection between the first sub-portion 191 and the second sub-portion 192 can be improved, thereby ensuring the connection between the first electrode layer 19 and the isolation structure 12, improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, and further reducing the probability of dark spots in the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0294] See also Figure 8 In some embodiments, the first sub-layer 1921 is located on a side of the second sub-layer 1922 close to the substrate 11 .

[0295] Therefore, that is to say, the first sub-portion 191 and the first sub-layer 1921 are manufactured before the second sub-layer 1922. Thus, when manufacturing the second sub-layer 1922, the second sub-layer 1922 can be deposited on the side of the first sub-layer 1921 away from the substrate 11. Thus, on the one hand, the reliability of the connection between the first sub-layer 1921 and the second sub-layer 1922 can be improved, thereby improving the reliability of the connection between the first sub-portion 191 and the second sub-portion 192. On the other hand, since the thickness of the first sub-layer 1921 is less than the thickness of the second sub-layer 1922, the side of the first sub-layer 1921 away from the substrate 11 is in contact with the side of the isolation structure 12 close to the substrate 11 (the surface of the blocking portion 122 close to the substrate 11). When the second sub-layer 1922 is manufactured, the second sub-layer 1922 has a larger evaporation angle range, so that the manufactured second sub-layer 1922 can have a larger thickness, and the second sub-layer 1922 has a larger overlap height on the side wall of the isolation structure 12 close to the first opening 12a, thereby effectively improving the reliability of the connection between the second sub-layer 1922 and the isolation structure 12, thereby ensuring the connection between the first electrode layer 19 and the isolation structure 12, improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, and further effectively reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0296] See also Figure 8 In some embodiments, the first sub-layer 1921 and the first sub-portion 191 jointly cover the light-emitting functional portion 13 .

[0297] Thus, the normal light emission of the light emitting functional portion 13 can be ensured, and the normal display of the display panel 10 can be ensured.

[0298] See also Figure 8 In some embodiments, the first sub-layer 1921 is connected to the isolation structure 12. Specifically, the first sub-layer 1921 overlaps the side wall of the isolation structure 12 near the first opening 12a.

[0299] In this way, the connection between the first electrode layer 19 and the isolation structure 12 can be ensured, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0300] See also Figure 7 and Figure 8In some embodiments, the isolation structure 12 includes an isolation body 121 and a blocking portion 122; the blocking portion 122 is located on the side of the isolation body 121 facing away from the substrate 11, and one end of the blocking portion 122 close to the first opening 12a extends toward the center of the first opening 12a and protrudes from the side wall of the isolation body 121 close to the first opening 12a; the second sub-portion 192 is connected to the isolation body 121.

[0301] Thus, a certain distance can be created between the bottom surface edge of the blocking portion 122 and the top surface edge of the isolating body 121, so that the portion of the blocking portion 122 that extends beyond the edge of the isolating body 121 forms a step structure. The step structure is beneficial for isolating the light-emitting functional portions 13 formed on different sides of the isolating structure 12 from each other during the evaporation process, thereby avoiding crosstalk between light-emitting functional portions 13 of different colors, thereby improving the display effect of the display panel 10 and enhancing the display quality of the display panel 10.

[0302] See also Figure 7 and Figure 8 In some embodiments, the orthographic projection of the isolator 121 on the substrate 11 is located within the orthographic projection of the blocking portion 122 on the substrate 11 .

[0303] Thus, the isolation structure 12 can form an undercut structure with a "large top and small bottom", and the isolation structure 12 corresponding to the first opening 12a can have a "roof", so that the adjacent light-emitting functional parts 13 can be separated during the evaporation process, thereby avoiding crosstalk between light-emitting functional parts 13 of different colors, thereby improving the display effect of the display panel 10 and enhancing the display quality of the display panel 10.

[0304] In some embodiments, the material of the isolator 121 includes a conductive material.

[0305] Thus, the first electrode layer 19 is electrically connected to the insulator 121 through the second sub-portion 192 , thereby reducing the probability of dark spots on the display panel 10 , improving the display defects of the display panel 10 , and enhancing the display quality of the display panel 10 .

[0306] In some embodiments, the material of the blocking portion 122 includes a conductive material.

[0307] Thus, on the one hand, the strength and hardness of the barrier 122 can be improved, so that the barrier 122 is not easy to collapse during the partition structure forming process, and the projection relationship between the barrier 122 and the isolator 121 on the substrate 11 is ensured, which is conducive to obtaining a partition structure of a desired shape. On the other hand, the resistance of the isolation structure 12 can be reduced, thereby reducing the power consumption of the display panel 10.

[0308] In some embodiments, the material of the blocking portion 122 includes insulating material.

[0309] Therefore, when a conductive film layer is provided on the side of the isolation structure 12 facing away from the substrate 11, the isolation structure 12 can utilize its own blocking portion 122 to be electrically insulated from the conductive film layer without the need to separately provide an insulating film layer to achieve electrical insulation, thereby facilitating a reduction in the thickness of the display panel 10.

[0310] See also Figure 7 and Figure 8 In some embodiments, the second sub-portion 192 covers at least a portion of the sidewall of the isolation body 121 close to the first opening 12 a.

[0311] In this way, the connection between the second sub-portion 192 and the isolation structure 12 can be guaranteed. In this way, the first electrode layer 19 is connected to the isolation structure 12 through the second sub-portion 192, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, thereby reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display quality of the display panel 10.

[0312] See also Figure 7 and Figure 8 In some embodiments, the separator 121 includes at least one metal layer. In a specific example, the separator 121 includes a first metal layer 1211 and a second metal layer 1212 stacked in a direction away from the substrate 11, and the orthographic projection of the second metal layer 1212 on the substrate 11 is located within the orthographic projection of the first metal layer 1211 on the substrate 11.

[0313] See also Figure 7 and Figure 8 In some embodiments, the second sub-portion 192 covers the sidewall of the first metal layer 1211 close to the first opening 12 a and a portion of the sidewall of the second metal layer 1212 close to the first opening 12 a .

[0314] In this way, the reliability of the connection between the second sub-portion 192 and the insulator 121 can be improved, and the first electrode layer 19 is electrically connected to the insulator 121 through the second sub-portion 192, thereby improving the reliability of the connection between the first electrode layer 19 and the isolation structure 12, reducing the probability of dark spots on the display panel 10, improving the poor display of the display panel 10, and improving the display effect of the display panel 10.

[0315] Fifth, see Fig.18 The embodiment of the present application further provides a display device 1, comprising the display panel 10 described in any of the above embodiments. In this way, the display effect of the display device 1 can be improved, and the display quality of the display device 1 can be enhanced.

[0316] The display device 1 can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a TV monitor, a flat-panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0317] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0318] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and defining a first opening; A light-emitting functional portion, disposed at the first opening; A conductive connection portion, disposed at the first opening; The conductive connection portion is located at the edge of the light-emitting functional portion and is connected to the isolation structure; The first electrode portion is disposed on a side of the light emitting functional portion away from the substrate and is connected to the conductive connecting portion.

2. The display panel according to claim 1, characterized in that: The conductive connection portion overlaps the side wall of the isolation structure close to the first opening; Optionally, the conductive connection portion is in an "L" shape and overlaps the side wall of the isolation structure; Optionally, the thickness of the conductive connection portion is greater than or equal to the thickness of the first electrode portion; Optionally, the orthographic projection of the conductive connection portion on the substrate does not overlap with the orthographic projection of the light-emitting area of ​​the light-emitting functional portion on the substrate; Optionally, the conductive connection portion includes a plurality of sections, the plurality of sections are arranged in a ring-shaped manner, and at least one of the sections is connected to the isolation structure; Optionally, the conductive connecting portion is a ring structure; Optionally, the light-emitting functional part includes multiple functional layers, and there is a distance between at least part of the functional layers and the isolation structure; Optionally, the conductive connection portion is made of a metal material or an alloy material; Optionally, the material of the conductive connection portion is the same as that of the first electrode portion.

3. The display panel according to claim 1, characterized in that: The orthographic projection of the first electrode portion on the substrate overlaps with the orthographic projection of the conductive connection portion on the substrate; Optionally, the first electrode portion at least covers at least a portion of a surface of the light-emitting functional portion that is away from the substrate; Optionally, the first electrode portion includes a first main body portion and an extension portion connected to each other, and the first main body portion is provided on a surface of the light-emitting functional portion away from the substrate; The extension portion extends in a direction close to the isolation structure, and an orthographic projection of the extension portion on the substrate overlaps with an orthographic projection of the conductive connection portion on the substrate; Optionally, the first main body covers the light-emitting area of ​​the light-emitting functional part; Optionally, the extension portion is annular and is located at the periphery of the first main body portion.

4. The display panel according to claim 3, characterized in that: The extension portion is located at a side of the conductive connection portion away from the substrate; Optionally, the conductive connection portion covers an edge of the light-emitting functional portion.

5. The display panel according to claim 3, characterized in that: The extension portion is located on a side of the conductive connection portion close to the substrate; Optionally, the first electrode portion covers the light-emitting functional portion; Optionally, the extension portion is connected to the isolation structure.

6. The display panel according to claim 1, characterized in that: The isolation structure comprises an isolation body and a blocking portion; the blocking portion is located on a side of the isolation body away from the substrate, an end of the blocking portion close to the first opening extends toward the center of the first opening and protrudes from a side wall of the isolation body close to the first opening; the conductive connecting portion is connected to the isolation body; Optionally, the orthographic projection of the isolating body on the substrate is located within the orthographic projection of the blocking portion on the substrate; Optionally, the material of the isolator includes a conductive material; Optionally, the material of the blocking portion includes a conductive material; Optionally, the material of the blocking portion includes insulating material.

7. The display panel according to claim 6, characterized in that: The conductive connection portion covers at least a portion of the side wall of the isolator close to the first opening; Optionally, the separator comprises at least one metal layer; Optionally, the isolator comprises a first metal layer and a second metal layer stacked in a direction away from the substrate, and an orthographic projection of the second metal layer on the substrate is located within an orthographic projection of the first metal layer on the substrate; Optionally, the conductive connecting portion covers a side wall of the first metal layer close to the first opening and a portion of a side wall of the second metal layer close to the first opening; Optionally, the conductive connecting portion covers a portion of a side wall of the second metal layer close to the first opening.

8. The display panel according to claim 1, characterized in that: The display panel further includes a second electrode portion; the second electrode portion is disposed on a side of the light-emitting functional portion close to the substrate; the second electrode portion is electrically insulated from the isolation structure; Optionally, the display panel further includes a first insulating layer, wherein the first insulating layer is disposed between the second electrode portion and the isolation structure; a second opening is formed on the first insulating layer, and the second opening corresponds to the first opening; At least a portion of the light emitting functional portion is disposed in the second opening; the second opening exposes the second electrode portion; Optionally, the orthographic projection of the isolation structure on the substrate is located at the periphery of the orthographic projection of the second opening on the substrate; Optionally, the material of the first insulating layer includes inorganic material.

9. The display panel according to claim 1, characterized in that: The display panel further includes a first encapsulation layer, wherein the first encapsulation layer covers the first electrode portion and the conductive connection portion; Optionally, the display panel further includes a second encapsulation layer and a third encapsulation layer, the second encapsulation layer covers the first encapsulation layer and the isolation structure; the third encapsulation layer covers the second encapsulation layer; Optionally, the first encapsulation layer is an inorganic encapsulation layer; the second encapsulation layer is an organic encapsulation layer; and the third encapsulation layer is an inorganic encapsulation layer.

10. A method for manufacturing a display panel, characterized in that: include: providing a substrate; forming an isolation structure on one side of the substrate, wherein the isolation structure defines a first opening; forming a light-emitting functional portion in the first opening; A first electrode portion and a conductive connection portion are formed in the first opening; the conductive connection portion is located at the edge of the light-emitting functional portion and connected to the isolation structure; the first electrode portion is located on a side of the light-emitting functional portion away from the substrate and connected to the conductive connection portion.

11. The method for manufacturing a display panel according to claim 10, characterized in that: The step of forming a first electrode portion and a conductive connection portion in the first opening includes: A first electrode portion is formed on a side of the light-emitting functional portion facing away from the substrate, and a conductive connection portion connected to the isolation structure is formed at an edge of the light-emitting functional portion; the first electrode portion includes a first main portion and an extension portion that are connected to each other, and the first main portion is located on a surface of the light-emitting functional portion that faces away from the substrate; the extension portion extends in a direction close to the isolation structure, and the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the conductive connection portion on the substrate.

12. The method for manufacturing a display panel according to claim 11, characterized in that: The step of forming a first electrode portion on a side of the light-emitting functional portion away from the substrate, and forming a conductive connection portion connected to the isolation structure at an edge of the light-emitting functional portion includes: forming the conductive connection portion connected to the isolation structure at the edge of the light-emitting functional portion; A first electrode portion is formed on a side of the light-emitting functional portion away from the substrate; the first electrode portion includes a first main portion and an extension portion that are connected to each other, the first main portion is located on a surface of the light-emitting functional portion away from the substrate, and the extension portion is located on a side of the conductive connecting portion away from the substrate; the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the conductive connecting portion on the substrate.

13. The method for manufacturing a display panel according to claim 11, characterized in that: The step of forming a first electrode portion on a side of the light-emitting functional portion away from the substrate, and forming a conductive connection portion connected to the isolation structure at an edge of the light-emitting functional portion includes: The first electrode portion is formed on a side of the light-emitting functional portion away from the substrate; the first electrode portion includes a first main body portion and an extension portion connected to each other, the first main body portion is located on a surface of the light-emitting functional portion away from the substrate; the extension portion extends in a direction close to the isolation structure; A conductive connection portion connected to the isolation structure is formed at the edge of the light-emitting functional portion. The conductive connection portion is located on a side of the extension portion away from the substrate. The orthographic projection of the conductive connection portion on the substrate overlaps with the orthographic projection of the extension portion on the substrate.

14. The method for manufacturing a display panel according to claim 11, characterized in that: The step of forming a conductive connection portion connected to the isolation structure at the edge of the light-emitting functional portion includes: A mask plate is provided, wherein the mask plate comprises a mask plate body and a sub-mask plate, wherein a third opening is formed through the mask plate body; the sub-mask plate is located at the third opening and connected to the mask plate body, and at least one evaporation opening is defined between the sub-mask plate and the mask plate body; The mask plate is arranged on a side of the isolation structure away from the substrate; the sub-mask plate covers a part of the first opening; and the evaporation opening exposes another part of the first opening; The conductive connection portion connected to the isolation structure is formed at the edge of the light-emitting functional portion by using an evaporation process.

15. A mask plate for evaporating a film layer in a first opening of an isolation structure on a substrate, characterized in that: The mask plate comprises a mask plate body and a sub-mask plate, wherein the mask plate body is provided with a third opening; the sub-mask plate is located at the third opening and connected to the mask plate body, and at least one evaporation opening is defined between the sub-mask plate and the mask plate body; The sub-mask is used to cover a portion of the first opening; and the evaporation opening is used to expose another portion of the first opening.

16. The mask plate according to claim 15, characterized in that: The sub-mask plate comprises a second main body portion and a connecting portion, wherein the second main body portion is located at the third opening, and the connecting portion connects the second main body portion and the mask plate main body; the evaporation opening is defined between the connecting portion, the second main body portion and the mask plate main body; Optionally, there are multiple connecting parts, and the multiple connecting parts are arranged at intervals around the second main body; the evaporation opening is defined between two adjacent connecting parts, the second main body and the mask plate body; Optionally, the side wall of the second main body is arranged to be inclined; Optionally, the third opening is used to correspond to the first opening on the isolation structure; Optionally, the mask plate body is used to shield the isolation structure.

17. The mask plate according to claim 16, characterized in that: A scattering layer is provided on the side wall of the second main body; Optionally, the scattering layer comprises a concave-convex structure.

18. The mask plate according to claim 16, characterized in that: A protective layer is provided on the side wall of the second main body, and a concave-convex structure is provided on a surface of the protective layer on a side away from the second main body; Optionally, the material of the protective layer includes stainless steel or nickel steel alloy.

19. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and defining a first opening; A light-emitting functional portion, disposed at the first opening; The first electrode layer includes a first sub-section and a second sub-section connected to each other; the first sub-section is located on the surface of the light-emitting functional section away from the substrate; the second sub-section is located at the edge of the light-emitting functional section and connected to the isolation structure; the thickness of the second sub-section is greater than the thickness of the first sub-section.

20. The display panel according to claim 19, characterized in that: The second sub-portion overlaps the side wall of the isolation structure close to the first opening; Optionally, the second sub-portion is in an "L" shape and overlaps with the side wall of the isolation structure; Optionally, the orthographic projection of the second sub-portion on the substrate does not overlap with the orthographic projection of the light-emitting area of ​​the light-emitting functional portion on the substrate; Optionally, the second sub-section is an annular structure and is located outside the first sub-section; Optionally, the first sub-section covers the light-emitting area of ​​the light-emitting functional section; Optionally, the light-emitting functional part includes a plurality of functional layers, and there is a distance between at least part of the functional layers and the isolation structure.

21. The display panel according to claim 19, characterized in that: The second sub-section includes a first sub-layer and a second sub-layer which are stacked; the first sub-layer and the first sub-section are arranged in the same layer and are connected to each other; the second sub-layer is connected to the isolation structure; Optionally, the second sub-layer overlaps a side wall of the isolation structure close to the first opening; Optionally, the thickness of the second sub-layer is greater than or equal to the thickness of the first sub-portion; Optionally, an orthographic projection of the first sub-layer on the substrate overlaps with an orthographic projection of the second sub-layer on the substrate; Optionally, the orthographic projection of the first sub-layer on the substrate is annular, and the first sub-layer is located at the periphery of the first sub-portion; Optionally, the orthographic projection of the second sub-layer on the substrate is annular; Optionally, the second sub-layer includes a plurality of third sub-portions, the third sub-portions are arranged in a ring-shaped manner, and at least one of the third sub-portions is connected to the isolation structure.

22. The display panel according to claim 21, characterized in that: The first sub-layer is located on a side of the second sub-layer facing away from the substrate; Optionally, the second sublayer covers an edge of the light-emitting functional part.

23. The display panel according to claim 21, characterized in that: The first sub-layer is located on a side of the second sub-layer close to the substrate; Optionally, the first sub-layer and the first sub-portion jointly cover the light-emitting functional portion; Optionally, the first sublayer is connected to the isolation structure.

24. The display panel according to claim 19, characterized in that: The isolation structure comprises an isolation body and a blocking portion; the blocking portion is located on a side of the isolation body away from the substrate, an end of the blocking portion close to the first opening extends toward the center of the first opening and protrudes from a side wall of the isolation body close to the first opening; the second sub-portion is connected to the isolation body; Optionally, the orthographic projection of the isolating body on the substrate is located within the orthographic projection of the blocking portion on the substrate; Optionally, the material of the isolator includes a conductive material; Optionally, the material of the blocking portion includes a conductive material; Optionally, the material of the blocking portion includes insulating material.

25. The display panel according to claim 24, characterized in that: The second sub-portion covers at least a portion of the side wall of the isolating body close to the first opening; Optionally, the separator comprises at least one metal layer; Optionally, the isolator comprises a first metal layer and a second metal layer stacked in a direction away from the substrate, and an orthographic projection of the second metal layer on the substrate is located within an orthographic projection of the first metal layer on the substrate; Optionally, the second sub-portion covers a side wall of the first metal layer close to the first opening and a portion of a side wall of the second metal layer close to the first opening.

26. A display device, characterized in that: A display panel comprising any one of claims 1 to 9 and 19 to 25.

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