Display panel, preparation method of display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display, the display panel comprises a substrate, an isolation structure, a light emitting unit, a first packaging layer, a second packaging layer and a blocking layer, and the isolation structure is enclosed to form an isolation opening; at least part of the light-emitting unit is located in the isolation opening; the first packaging layer comprises a plurality of packaging units arranged at intervals, each packaging unit comprises an edge covering part located on the side, away from the substrate, of the corresponding isolation structure, and a first gap is formed between the side, close to the substrate, of each edge covering part and the side, away from the substrate, of the corresponding isolation structure; the blocking layer comprises a plurality of blocking parts which are arranged at intervals, at least parts of the blocking parts are located in the corresponding first gaps, and the material of the blocking layer is different from the material of the light-emitting unit and the material of the blocking layer is different from the material of the second packaging layer. The risk that the light-emitting unit is damaged can be reduced, and therefore the display effect of the display panel can be improved.

Description

Technical Field

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

[0002] Flat panel display devices based on technologies such as Organic Light Emitting Diode (OLED) and Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptop computers, and desktop computers due to their advantages of high image quality, power saving, thin body, and wide application range, and have become the mainstream in display panels. In the process of manufacturing traditional display panels, the light-emitting pixel patterning is usually achieved through a Fine Metal Mask (FMM). The FMM technology is mature and has rich mass production experience. However, the FMM technology also has problems such as limited precision, high development cost, and long development cycle. The maskless technology eliminates the limitations of the traditional OLED process on the display screen size, resolution, and other screen body performances, and has the advantages of high performance, full-domain size, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, CN118660589A record the relevant content of the maskless fine metal mask technology for reference.

[0003] However, there are still some problems in the display panel that need to be solved urgently. Summary of the Invention

[0004] In order to overcome the technical problems mentioned in the above technical background, an embodiment of the present application provides a display panel, which includes:

[0005] A substrate;

[0006] An isolation structure located on one side of the substrate, and the isolation structure encloses a plurality of isolation openings;

[0007] A light-emitting unit, at least a part of which is located in the corresponding isolation opening;

[0008] A first encapsulation layer including a plurality of encapsulation units arranged at intervals, the encapsulation units are located on the side of the corresponding light-emitting unit away from the substrate, the encapsulation unit includes a side edge portion located on the side of the isolation structure away from the substrate, and there is a first gap between the side of the side edge portion close to the substrate and the side of the isolation structure away from the substrate;

[0009] A second encapsulation layer, located on a side of the first encapsulation layer away from the substrate;

[0010] A plugging layer, including a plurality of plugging parts arranged at intervals, at least part of the plugging parts being located in the corresponding first gap, wherein the material of the plugging layer is different from the material of the light-emitting unit and the material of the plugging layer is different from the material of the second encapsulation layer.

[0011] In some possible embodiments, the materials of the plugging layer and the first encapsulation layer include inorganic materials;

[0012] Preferably, the material of the second encapsulation layer includes an organic material.

[0013] In some possible embodiments, one side of the plugging part facing away from the corresponding isolation opening has a first concavo-convex structure;

[0014] Preferably, the plugging part includes multiple layers of plugging sub-parts stacked in sequence along a direction away from the substrate, and the first concavo-convex structure is formed on one side of at least two layers of the plugging sub-parts facing away from the isolation opening;

[0015] Preferably, one side of the plugging part close to the substrate contacts one side of the isolation structure away from the substrate;

[0016] Preferably, the edge wrapping part extends from one side of the plugging part facing the isolation opening to one side of the plugging part away from the substrate;

[0017] Preferably, one side of the plugging part close to the corresponding isolation opening contacts the corresponding edge wrapping part.

[0018] In some possible embodiments, the plugging part includes a first plugging sub-part, a second plugging sub-part, a third plugging sub-part, and a fourth plugging sub-part stacked in sequence along a direction away from the substrate, and the first concavo-convex structure is formed on one side of the first plugging sub-part, the second plugging sub-part, the third plugging sub-part, and the fourth plugging sub-part facing away from the corresponding isolation opening;

[0019] Preferably, along a direction perpendicular to the substrate, the thickness of the first plugging sub-part is greater than or equal to and less than or equal to

[0020] Preferably, along a direction perpendicular to the substrate, the thickness of the second plugging sub-part is greater than or equal to and less than or equal to

[0021] Preferably, along a direction perpendicular to the substrate, the thickness of the third plugging sub-part is greater than or equal to and less than or equal to

[0022] Preferably, along a direction perpendicular to the substrate, the thickness of the fourth plugging sub - portion is greater than or equal to and less than or equal to

[0023] In some possible implementation manners, the orthographic projection of the first plugging sub - portion on the substrate is located within the orthographic projection of the second plugging sub - portion on the substrate;

[0024] Preferably, the orthographic projection of the third plugging sub - portion on the substrate is located within the orthographic projection of the second plugging sub - portion on the substrate;

[0025] Preferably, the orthographic projection of the third plugging sub - portion on the substrate is located within the orthographic projection of the fourth plugging sub - portion on the substrate;

[0026] Preferably, the distance between the orthographic projection of the side of the first plugging sub - portion facing the corresponding isolation opening on the substrate and the orthographic projection of the side of the second plugging sub - portion facing the corresponding isolation opening on the substrate is a first distance, the first distance is greater than or equal to 2μm and less than or equal to 4μm;

[0027] Preferably, the distance between the orthographic projection of the side of the third plugging sub - portion facing the corresponding isolation opening on the substrate and the orthographic projection of the side of the second plugging sub - portion facing the corresponding isolation opening on the substrate is a second distance, the second distance is greater than or equal to 2μm and less than or equal to 4μm;

[0028] Preferably, the distance between the orthographic projection of the side of the third plugging sub - portion facing the corresponding isolation opening on the substrate and the orthographic projection of the side of the fourth plugging sub - portion facing the corresponding isolation opening on the substrate is a third distance, the third distance is greater than or equal to 2μm and less than or equal to 4μm;

[0029] Preferably, the first distance is equal to the second distance; and / or, the first distance is equal to the third distance; and / or, the second distance is equal to the third distance.

[0030] In some possible implementation manners, the material of the first plugging sub - portion includes silicon nitride or silicon oxynitride;

[0031] Preferably, the material of the second plugging sub - portion includes silicon oxynitride or silicon oxide;

[0032] Preferably, the material of the third plugging sub - portion includes silicon nitride or silicon oxynitride;

[0033] Preferably, the material of the fourth plugging sub - part includes silicon oxynitride or silicon oxide;

[0034] Preferably, the material of the first plugging sub - part is the same as that of the third plugging sub - part;

[0035] Preferably, the material of the second plugging sub - part is the same as that of the fourth plugging sub - part.

[0036] In some possible implementation manners, the orthographic projection of the second plugging sub - part on the substrate is located within the orthographic projection of the first plugging sub - part on the substrate;

[0037] Preferably, the orthographic projection of the second plugging sub - part on the substrate is located within the orthographic projection of the third plugging sub - part on the substrate;

[0038] Preferably, the orthographic projection of the fourth plugging sub - part on the substrate is located within the orthographic projection of the third plugging sub - part on the substrate;

[0039] Preferably, the distance between the orthographic projection of the side of the second plugging sub - part facing away from the corresponding isolation opening on the substrate and the orthographic projection of the side of the first plugging sub - part facing away from the corresponding isolation opening on the substrate is a fourth distance, and the fourth distance is greater than or equal to 2μm and less than or equal to 4μm;

[0040] Preferably, the distance between the orthographic projection of the side of the second plugging sub - part facing away from the corresponding isolation opening on the substrate and the orthographic projection of the side of the third plugging sub - part facing away from the corresponding isolation opening on the substrate is a fifth distance, and the fifth distance is greater than or equal to 2μm and less than or equal to 4μm;

[0041] Preferably, the distance between the orthographic projection of the side of the fourth plugging sub - part facing away from the corresponding isolation opening on the substrate and the orthographic projection of the side of the third plugging sub - part facing away from the corresponding isolation opening on the substrate is a sixth distance, and the sixth distance is greater than or equal to 2μm and less than or equal to 4μm;

[0042] Preferably, the fourth distance is equal to the fifth distance; and / or, the fourth distance is equal to the sixth distance; and / or, the fifth distance is equal to the sixth distance.

[0043] In some possible implementation manners, the material of the first plugging sub - part includes silicon oxynitride or silicon oxide;

[0044] Preferably, the material of the second plugging sub - part includes silicon nitride or silicon oxynitride;

[0045] Preferably, the material of the third plugging sub - part includes silicon oxynitride or silicon oxide;

[0046] Preferably, the material of the fourth plugging sub - part includes silicon nitride or silicon oxynitride;

[0047] Preferably, the material of the first plugging sub - part is the same as that of the third plugging sub - part;

[0048] Preferably, the material of the second plugging sub - part is the same as that of the fourth plugging sub - part.

[0049] In some possible embodiments, the display panel further includes a light - emitting redundant unit and an electrode redundant unit which are sequentially stacked on a side of the fourth plugging sub - part away from the substrate, and a side of the edge - wrapping part facing the substrate is in contact with a side of the electrode redundant unit away from the substrate;

[0050] Preferably, the plugging part further includes a fifth plugging sub - part, and the fifth plugging sub - part is located on a side of at least one of the first plugging sub - part, the second plugging sub - part, the third plugging sub - part, the fourth plugging sub - part, the light - emitting redundant unit and the electrode redundant unit facing away from the corresponding isolation opening;

[0051] Preferably, the fifth plugging sub - part extends from a side of the corresponding isolation structure away from the substrate to a side of the corresponding edge - wrapping part for connection through sides of the first plugging sub - part, the second plugging sub - part, the third plugging sub - part, the fourth plugging sub - part, the light - emitting redundant unit and the electrode redundant unit facing away from the corresponding isolation opening in sequence;

[0052] Preferably, the fifth plugging sub - part is mutually embedded with the first concavo - convex structure;

[0053] Preferably, the fifth plugging sub - part is of the same layer and the same material as the edge - wrapping part;

[0054] Preferably, the light - emitting unit includes a first electrode, a light - emitting part and a second electrode which are sequentially stacked in a direction away from the substrate;

[0055] Preferably, the light - emitting redundant unit is of the same layer and the same material as the light - emitting part;

[0056] Preferably, the electrode redundant unit is of the same layer and the same material as the second electrode.

[0057] In some possible embodiments, there is a second gap between a side of the edge - wrapping part facing the substrate and a side of the corresponding fourth plugging sub - part away from the substrate;

[0058] Preferably, in a direction perpendicular to the substrate, the size of the blocking portion is smaller than the size of the corresponding first gap;

[0059] Preferably, the light-emitting unit includes a first electrode, a light-emitting portion, and a second electrode that are sequentially stacked in a direction away from the substrate. In a direction perpendicular to the substrate, the height of the second gap is equal to the sum of the thicknesses of the light-emitting portion and the second electrode of the corresponding light-emitting unit.

[0060] In some possible embodiments, one side of the blocking portion close to the corresponding isolation opening has a second concavo-convex structure, and the edge wrapping portion is in contact with the corresponding second concavo-convex structure;

[0061] Preferably, the edge wrapping portion and the corresponding second concavo-convex structure are mutually engaged;

[0062] Preferably, the display panel further includes a third encapsulation layer on a side of the second encapsulation layer away from the substrate;

[0063] Preferably, the materials of the third encapsulation layer all include inorganic materials.

[0064] In some possible embodiments, the isolation structure includes a first isolation portion and a second isolation portion that are sequentially stacked in a direction away from the substrate. A positive projection of the first isolation portion on the substrate on a side away from the substrate is located within a positive projection of the second isolation portion on the substrate;

[0065] Preferably, the second electrode of the light-emitting unit is electrically connected to the corresponding first isolation portion; and / or, the isolation structure further includes a third isolation portion on a side of the first isolation portion facing the substrate, and the second electrode of the light-emitting unit is electrically connected to the corresponding third isolation portion;

[0066] Preferably, the material of the third isolation portion includes molybdenum; and / or, the material of the first isolation portion includes aluminum; and / or, the material of the second isolation portion includes titanium.

[0067] In some possible embodiments, the present application also provides a method for manufacturing a display panel, the method including:

[0068] Forming a pixel defining material layer and an isolation material layer on one side of a substrate in sequence;

[0069] Forming a blocking material layer on a side of the isolation material layer away from the substrate;

[0070] Performing a patterning process on the blocking material layer to form a blocking layer including a plurality of blocking portions arranged at intervals;

[0071] The isolation material layer and the pixel defining material layer are patterned in sequence to form an isolation structure including isolation openings and a pixel defining layer including pixel openings respectively;

[0072] At least part of the light-emitting units different from the material of the plugging layer are formed in the isolation openings, and a packaging unit is formed on the side of the light-emitting units away from the substrate, so that the packaging unit is located at the edge portion on the side of the isolation structure away from the substrate and wraps at least part of the plugging portion;

[0073] A second packaging layer different from the material of the plugging layer is formed on the side of the packaging unit away from the substrate.

[0074] In some possible embodiments, the steps of forming a plugging material layer on the side of the isolation material layer away from the substrate and patterning the plugging material layer include:

[0075] At least two layers of plugging material layers with an etching selectivity ratio not equal to 1 for the first etching solution, namely a first plugging material layer, a second plugging material layer, a third plugging material layer and a fourth plugging material layer, are formed in sequence on the side of the isolation material layer away from the substrate;

[0076] The fourth plugging material layer, the third plugging material layer, the second plugging material layer and the first plugging material layer are patterned with the first etching solution in sequence to form the plugging portion including a fourth plugging sub-portion, a third plugging sub-portion, a second plugging sub-portion and a first plugging sub-portion.

[0077] In some possible embodiments, the present application further provides an electronic device, which includes the display panel described in the present application, or a display panel prepared by the preparation method of the display panel described in the present application.

[0078] Compared with the prior art, the present application has the following beneficial effects:

[0079] A display panel, a preparation method of the display panel and an electronic device provided by the present application can reduce the risk of damage to the light-emitting units by providing a plugging portion that fills at least part of the first gap on the side of the isolation structure away from the substrate, thereby improving the display effect of the display panel. Description of the Drawings

[0080] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0081] Figure 1 Schematic cross-sectional view of the display panel provided by the embodiment of the present application, including a blocking portion;

[0082] Figure 2 Schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including multiple blocking sub-portions;

[0083] Figure 3 One of the schematic cross-sectional views of the blocking portion of the display panel provided by the embodiment of the present application, including four blocking sub-portions;

[0084] Figure 4 Another schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including four blocking sub-portions;

[0085] Figure 5 One of the schematic cross-sectional views of the blocking portion of the display panel provided by the embodiment of the present application, including a fifth blocking sub-portion;

[0086] Figure 6 Another schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including a fifth blocking sub-portion;

[0087] Figure 7 One of the schematic cross-sectional views of the blocking portion of the display panel provided by the embodiment of the present application, including a second concave-convex structure;

[0088] Figure 8 Another schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including a second concave-convex structure;

[0089] Figure 9 Another schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including a second concave-convex structure;

[0090] Figure 10 Another schematic cross-sectional view of the blocking portion of the display panel provided by the embodiment of the present application, including a second concave-convex structure;

[0091] Figure 11 Schematic cross-sectional view of the second encapsulation layer and the third encapsulation layer of the display panel provided by the embodiment of the present application;

[0092] Figure 12 Schematic flow chart of a method for manufacturing a display panel provided by the embodiment of the present application;

[0093] Figure 13 Schematic cross-sectional view of sequentially forming a pixel defining material layer and an isolation material layer on one side of a substrate provided by the embodiment of the present application;

[0094] Figure 14Cross-sectional view showing the sequential formation of a first sealing material layer, a second sealing material layer, a third sealing material layer, and a fourth sealing material layer on the side of the isolation material layer away from the substrate provided by the embodiments of the present application;

[0095] Figure 15 Cross-sectional view showing the sequential patterning of the fourth sealing material layer, the third sealing material layer, the second sealing material layer, and the first sealing material layer provided by the embodiments of the present application;

[0096] Figure 16 Cross-sectional view showing the sequential patterning of the isolation material layer and the pixel defining material layer provided by the embodiments of the present application.

[0097] Reference numerals: 1, substrate; 2, pixel defining layer; 21, pixel opening; 3, isolation structure; 301, isolation opening; 31, first isolation portion; 32, second isolation portion; 33, third isolation portion; 4, first electrode; 5, light emitting portion; 6, second electrode; 7, first concavo-convex structure; 8, sealing layer; 801, sealing sub-portion; 81, sealing portion; 811, first sealing sub-portion; 812, second sealing sub-portion; 813, third sealing sub-portion; 814, fourth sealing sub-portion; 815, light emitting redundant unit; 816, electrode redundant unit; 817, fifth sealing sub-portion; 9, encapsulation unit; 91, edge portion; 10, first gap; 11, light emitting unit; 12, second concavo-convex structure; 13, second encapsulation layer; 14, third encapsulation layer; 15, pixel defining material layer; 16, isolation material layer; 17, first sealing material layer; 18, second sealing material layer; 19, third sealing material layer; 20, fourth sealing material layer. Detailed Description of the Embodiments

[0098] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0099] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0100] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0101] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0102] It should be noted that, without conflict, different features in the embodiments of the present application may be combined with each other.

[0103] Increasing the density of light-emitting units (i.e., pixel density) in a display panel is an important way to improve the display effect. However, currently, the display panel fabricated by using the Fine Metal Mask (FMM) technology is limited by the technology and cannot further increase the density of light-emitting units. Through long-term research by the inventor, it is found that in order to solve the technical problem that the density of light-emitting units cannot be further increased, an isolation structure is provided in some display panels. When the light-emitting functional layer and the second electrode are deposited in a whole layer, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Different color light-emitting units can be formed in different isolation openings through multiple deposition and multiple etching processes (i.e., light-emitting unit patterning).

[0104] The display panel in the related art includes a substrate, an isolation structure located on one side of the substrate, a light-emitting unit located in the isolation opening formed by the isolation structure, and a packaging unit located on the side of the light-emitting unit away from the substrate. The packaging unit extends from the side of the isolation structure facing the isolation opening to the side of the isolation structure away from the substrate, and the packaging unit can play a role in packaging the light-emitting unit.

[0105] However, there is a first gap between the packaging unit located on the side of the isolation structure away from the substrate and the isolation structure. During the process of forming the rear light-emitting unit, the related liquid medicine is likely to enter the front light-emitting unit through the first gap corresponding to the front light-emitting unit, and finally damage the front light-emitting unit, thereby causing dark spots in the display panel and ultimately affecting the display effect of the display panel.

[0106] To solve the above-mentioned technical problems, the inventors have innovatively designed the following technical solutions. The specific implementation solutions of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the defects existing in the above prior art solutions are all the results obtained by the inventors through practice and careful research. Therefore, the discovery process of the above technical problems and the solutions proposed in the following embodiments for the above problems should be the contributions made by the inventors to the present application during the invention and creation process, and should not be understood as the technical content known to those skilled in the art.

[0107] Please refer to Figure 1 , this embodiment provides a display panel, which includes a substrate 1, an isolation structure 3, a light-emitting unit 11, a first encapsulation layer, a second encapsulation layer 13, and a blocking layer 8.

[0108] The substrate 1 may include a substrate and a plurality of driving units located on one side of the substrate. Each driving unit may include one or more semiconductor switching devices. The semiconductor switching devices may be formed by the cooperation of a plurality of film layers in the substrate 1. For example, the semiconductor switching devices may be thin-film transistors formed by the cooperation of a plurality of film layers.

[0109] The isolation structure 3 is located on one side of the substrate 1. The isolation structure 3 encloses to form a plurality of isolation openings 301; at least part of the light-emitting unit 11 is located in the corresponding isolation openings 301.

[0110] The first encapsulation layer is located on the side of the light-emitting unit 11 away from the substrate 1. The first encapsulation layer includes a plurality of encapsulation units 9 arranged at intervals. The encapsulation unit 9 includes a side edge portion 91 located on the side of the corresponding isolation structure 3 away from the substrate 1. There is a first gap 10 between the side of the side edge portion 91 close to the substrate 1 and the side of the isolation structure 3 away from the substrate 1.

[0111] The second encapsulation layer 13 is located on the side of the first encapsulation layer away from the substrate 1.

[0112] The blocking layer 8 includes a plurality of blocking portions 81 arranged at intervals. At least part of the blocking portion 81 is located in the corresponding first gap 10. Among them, the material of the blocking layer 8 is different from the material of the light-emitting unit 11, and the material of the blocking layer 8 is different from the material of the second encapsulation layer 13.

[0113] Since a blocking portion 81 is formed on the side of the isolation structure 3 away from the substrate 1, and the material of the blocking layer 8 is different from the material of the light-emitting unit and the second encapsulation layer 13, the blocking portion 81 can block at least part of the first gap 10. In the process of forming the rear light-emitting unit 11, the photoresist and the like of the patterned rear light-emitting unit 11 are not easy to enter the front light-emitting unit 11 through the first gap 10, so that the front light-emitting unit 11 is not easy to be damaged. Similarly, in the process of preparing the display panel, the relevant liquid is not easy to enter the light-emitting unit 11 through the first gap 10, so that the corresponding light-emitting unit 11 is not easy to be damaged, so that the light-emitting unit 11 is not easy to form dark spots, and finally the display effect of the display panel can be improved.

[0114] Based on the above design, this embodiment provides a sealing portion 81 filling at least a portion of the first gap 10 on the side of the isolation structure 3 away from the substrate 1, and the material of the sealing layer 8 is different from the material of the light-emitting unit and the second encapsulation layer 13. This can reduce the risk of damage to the light-emitting unit 11, thereby improving the display effect of the display panel.

[0115] In some possible implementations, the materials of the blocking layer 8 and the first encapsulation layer include inorganic materials, and the material of the second encapsulation layer 13 includes organic materials.

[0116] The combination of inorganic materials has stronger adhesion. Therefore, the blocking layer 8 and the first encapsulation layer are in contact with each other, which can make the adhesion between the blocking layer 8 and the first encapsulation layer stronger, so that the blocking part 81 can have a better blocking effect on the first gap 10, and the encapsulation unit 9 can make the light-emitting unit 11 have a better luminous effect.

[0117] In some possible implementations, a side of the blocking portion 81 facing away from the corresponding isolation opening 301 has a first concave-convex structure 7 .

[0118] The isolation opening 301 in “the side of the sealing portion 81 away from the corresponding isolation opening 301” refers to the isolation opening 301 closest to the sealing portion 81. A first concave-convex structure 7 is provided on the side of the sealing portion 81 away from the isolation opening 301. The first concave-convex structure 7 can make it more difficult for the photoresist of the patterned post-light-emitting unit 11 and other related liquids (such as etching liquid) to enter the light-emitting unit 11 through the first gap 10, thereby making it less likely for the light-emitting unit 11 to form dark spots.

[0119] For some possible implementations, see Figure 2 The blocking portion 81 includes a plurality of blocking sub-portions 801 stacked in sequence in a direction away from the substrate 1, and a first concave-convex structure 7 is formed between at least two layers of blocking sub-portions 801 on a side away from the isolation opening 301, and the etching selectivity ratio of adjacent blocking sub-portions 801 for the first etching solution is not equal to 1.

[0120] In this embodiment, the number of layers of the plugging sub - part 801 is not limited and can be set according to actual needs. Since the etching selectivity ratios of adjacent plugging sub - parts 801 to the first etching solution are not equal to 1, during the etching process of forming the plugging part 81, the degrees of side - etching of adjacent plugging sub - parts 801 are different. Specifically, the side - etching amount of the plugging sub - part 801 with a larger etching rate is greater than that of the plugging sub - part 801 with a smaller etching rate. Therefore, the plugging sub - part 801 with a larger etching rate shrinks inward relative to the plugging sub - part 801 with a smaller etching rate. Thus, after the plugging part 81 is formed by etching, a first concave - convex structure 7 is naturally formed on the side of the multi - layer plugging sub - parts 801 away from the isolation opening 301, and there is no need to set up a special process to form the first concave - convex structure 7, thereby reducing the cost of forming the first concave - convex structure 7.

[0121] Preferably, the side of the plugging part 81 close to the substrate 1 is in contact with the side of the isolation structure 3 away from the substrate 1. In this way, the plugging part 81 is arranged on the isolation structure 3, thereby improving the stability of the plugging part 81.

[0122] Preferably, the edge - wrapping part 91 extends from the side of the plugging part 81 facing the isolation opening 301 to the side of the plugging part 81 away from the substrate 1, and the side of the plugging part 81 close to the corresponding isolation opening 301 is in contact with the corresponding edge - wrapping part 91. In this way, the contact area between the edge - wrapping part 91 and the plugging part 81 can be increased, thereby increasing the adhesion between the edge - wrapping part 91 and the plugging part 81, and further improving the stability of the edge - wrapping part 91.

[0123] In some possible implementation manners, please refer to Figure 3 , the plugging part 81 includes a first plugging sub - part 811, a second plugging sub - part 812, a third plugging sub - part 813, and a fourth plugging sub - part 814 that are sequentially stacked in a direction away from the substrate 1. The side of the first plugging sub - part 811, the second plugging sub - part 812, the third plugging sub - part 813, and the fourth plugging sub - part 814 away from the isolation opening 301 forms a first concave - convex structure 7.

[0124] In this embodiment, the number of layers of the plugging sub - part is set to four layers, namely the first plugging sub - part 811, the second plugging sub - part 812, the third plugging sub - part 813, and the fourth plugging sub - part 814. In this way, both the thickness of the plugging part 81 can be made more appropriate, and the plugging effect of the plugging part 81 on the first gap 10 can be improved.

[0125] Optionally, the etching selectivity ratio of the first plugging sub - part 811 to the second plugging sub - part 812 with respect to the first etching solution is not equal to 1; and / or, the etching selectivity ratio of the second plugging sub - part 812 to the third plugging sub - part 813 with respect to the first etching solution is not equal to 1; and / or, the etching selectivity ratio of the third plugging sub - part 813 to the fourth plugging sub - part 814 with respect to the first etching solution is not equal to 1.

[0126] Since the etching selectivity ratios of the first plugging sub - portion 811 and the second plugging sub - portion 812 with respect to the first etching solution are not equal to 1, after the first plugging sub - portion 811 and the second plugging sub - portion 812 are formed by etching, the side etching amounts of the first plugging sub - portion 811 and the second plugging sub - portion 812 are different; since the etching selectivity ratios of the second plugging sub - portion 812 and the third plugging sub - portion 813 with respect to the first etching solution are not equal to 1, after the second plugging sub - portion 812 and the third plugging sub - portion 813 are formed by etching, the side etching amounts of the second plugging sub - portion 812 and the third plugging sub - portion 813 are different; since the etching selectivity ratios of the third plugging sub - portion 813 and the fourth plugging sub - portion 814 with respect to the first etching solution are not equal to 1, after the third plugging sub - portion 813 and the fourth plugging sub - portion 814 are formed by etching, the side etching amounts of the third plugging sub - portion 813 and the fourth plugging sub - portion 814 are different. Thus, after the plugging portion 81 is formed, the first concavo - convex structure 7 can be formed on the side of the plugging portion 81 away from the isolation opening 301.

[0127] Preferably, the etching selectivity ratios of the first plugging sub - portion 811 and the third plugging sub - portion 813 with respect to the first etching solution are equal to 1, and the etching selectivity ratios of the second plugging sub - portion 812 and the fourth plugging sub - portion 814 with respect to the first etching solution are equal to 1. Thus, the side etching amounts of the first plugging sub - portion 811 and the third plugging sub - portion 813 are equal, and the side etching amounts of the second plugging sub - portion 812 and the fourth plugging sub - portion 814 are equal, so that the first concavo - convex structure 7 can protrude or recess more evenly, and further the plugging effect of the plugging portion 81 on the first gap 10 can be improved.

[0128] Preferably, along the direction Z perpendicular to the substrate 1, the thickness H1 of the first plugging sub - portion 811 is greater than or equal to and less than or equal to For example, the thickness H1 can be or etc. By reasonably setting the thickness H1, the plugging effect of the plugging portion 81 on the first gap 10 can be improved.

[0129] Preferably, along the direction Z perpendicular to the substrate 1, the thickness H2 of the second plugging sub - portion 812 is greater than or equal to and less than or equal to For example, the thickness H2 can be or etc. By reasonably setting the thickness H2, the plugging effect of the plugging portion 81 on the first gap 10 can be improved.

[0130] Preferably, along the direction Z perpendicular to the substrate 1, the thickness H3 of the third plugging sub - portion 813 is greater than or equal to and less than or equal to For example, the thickness H3 can be or etc. By reasonably setting the thickness H3, the blocking effect of the blocking part 81 on the first gap 10 can be improved.

[0131] Preferably, along the direction Z perpendicular to the substrate 1, the thickness H4 of the fourth blocking sub - part 814 is greater than or equal to and less than or equal to For example, the thickness H4 can be or etc. By reasonably setting the thickness H4, the blocking effect of the blocking part 81 on the first gap 10 can be improved.

[0132] Two different embodiments are introduced below.

[0133] In one embodiment, please refer to again Figure 3 , the orthographic projection of the first blocking sub - part 811 on the substrate 1 is located within the orthographic projection of the second blocking sub - part 812 on the substrate 1, the orthographic projection of the third blocking sub - part 813 on the substrate 1 is located within the orthographic projection of the second blocking sub - part 812 on the substrate 1, and the orthographic projection of the third blocking sub - part 813 on the substrate 1 is located within the orthographic projection of the fourth blocking sub - part 814 on the substrate 1.

[0134] Optionally, for the first etching solution, the etching rate of the first blocking sub - part 811 is greater than that of the second blocking sub - part 812, the etching rate of the third blocking sub - part 813 is greater than that of the second blocking sub - part 812, and the etching rate of the third blocking sub - part 813 is greater than that of the fourth blocking sub - part 814.

[0135] In this embodiment, for the first etching solution, the etching rate of the first blocking sub - part 811 is greater than that of the second blocking sub - part 812. Therefore, the first blocking sub - part 811 shrinks inward relative to the second blocking sub - part 812; the etching rate of the third blocking sub - part 813 is greater than that of the second blocking sub - part 812. Therefore, the third blocking sub - part 813 shrinks inward relative to the second blocking sub - part 812; the etching rate of the third blocking sub - part 813 is greater than that of the fourth blocking sub - part 814. Therefore, the third blocking sub - part 813 shrinks inward relative to the fourth blocking sub - part 814. The blocking part 81 with such a structure has a better blocking effect on the first gap 10.

[0136] Preferably, the distance between the orthographic projection on the substrate 1 of the side of the first plugging sub - portion 811 facing away from the corresponding isolation opening 301 and the orthographic projection on the substrate 1 of the side of the second plugging sub - portion 812 facing away from the corresponding isolation opening 301 is a first distance L1. The first distance L1 is greater than or equal to 2 μm and less than or equal to 4 μm. For example, the first distance L1 can be 2 μm, 2.5 μm, 3 μm, 3.5 μm or 4 μm, etc.

[0137] Preferably, the distance between the orthographic projection on the substrate 1 of the side of the third plugging sub - portion 813 facing away from the corresponding isolation opening 301 and the orthographic projection on the substrate 1 of the side of the second plugging sub - portion 812 facing away from the corresponding isolation opening 301 is a second distance L2. The second distance L2 is greater than or equal to 2 μm and less than or equal to 4 μm. For example, the second distance L2 can be 2 μm, 2.5 μm, 3 μm, 3.5 μm or 4 μm, etc.

[0138] Preferably, the distance between the orthographic projection on the substrate 1 of the side of the third plugging sub - portion 813 facing away from the corresponding isolation opening 301 and the orthographic projection on the substrate 1 of the side of the fourth plugging sub - portion 814 facing away from the corresponding isolation opening 301 is a third distance L3. The third distance L3 is greater than or equal to 2 μm and less than or equal to 4 μm. For example, the third distance L3 can be 2 μm, 2.5 μm, 3 μm, 3.5 μm or 4 μm, etc.

[0139] By reasonably setting the first distance L1, the second distance L2 and the third distance L3, the plugging effect of the plugging portion 81 on the first gap 10 can be better, thereby further improving the display effect of the display panel.

[0140] Preferably, the first distance L1 is equal to the second distance L2; and / or, the first distance L1 is equal to the third distance L3; and / or, the second distance L2 is equal to the third distance L3. In this way, the protrusion or depression of the first concavo - convex structure 7 can be made more uniform.

[0141] Preferably, the material of the first plugging sub - portion 811 includes silicon nitride or silicon oxynitride, the material of the second plugging sub - portion 812 includes silicon oxynitride or silicon oxide, the material of the third plugging sub - portion 813 includes silicon nitride or silicon oxynitride, and the material of the fourth plugging sub - portion 814 includes silicon oxynitride or silicon oxide.

[0142] For the first etching solution, the etching rate of silicon nitride is greater than that of silicon oxynitride, and the etching rate of silicon oxynitride is greater than that of silicon oxide. Therefore, when the material of the first plugging sub - portion 811 includes silicon nitride, the material of the second plugging sub - portion 812 includes silicon oxynitride or silicon oxide; when the material of the first plugging sub - portion 811 includes silicon oxynitride, the material of the second plugging sub - portion 812 includes silicon oxide. When the material of the third plugging sub - portion 813 includes silicon nitride, the material of the second plugging sub - portion 812 includes silicon oxynitride or silicon oxide, and the material of the fourth plugging sub - portion 814 includes silicon oxynitride or silicon oxide; when the material of the third plugging sub - portion 813 includes silicon oxynitride, the material of the second plugging sub - portion 812 includes silicon oxide, and the material of the fourth plugging sub - portion 814 includes silicon oxide.

[0143] Preferably, the material of the first plugging sub - portion 811 is the same as that of the third plugging sub - portion 813, and the material of the second plugging sub - portion 812 is the same as that of the fourth plugging sub - portion 814.

[0144] When the materials of the first plugging sub - portion 811 and the third plugging sub - portion 813 include silicon nitride, the materials of the second plugging sub - portion 812 and the fourth plugging sub - portion 814 include silicon oxynitride or silicon oxide; when the materials of the first plugging sub - portion 811 and the third plugging sub - portion 813 include silicon oxynitride, the materials of the second plugging sub - portion 812 and the fourth plugging sub - portion 814 include silicon oxide.

[0145] In another embodiment, please refer to Figure 4 , the orthographic projection of the second plugging sub - portion 812 on the substrate 1 is located within the orthographic projection of the first plugging sub - portion 811 on the substrate 1, the orthographic projection of the second plugging sub - portion 812 on the substrate 1 is located within the orthographic projection of the third plugging sub - portion 813 on the substrate 1, and the orthographic projection of the fourth plugging sub - portion 814 on the substrate 1 is located within the orthographic projection of the third plugging sub - portion 813 on the substrate 1.

[0146] Optionally, for the first etching solution, the etching rate of the second plugging sub - portion 812 is greater than that of the first plugging sub - portion 811, the etching rate of the second plugging sub - portion 812 is greater than that of the third plugging sub - portion 813, and the etching rate of the fourth plugging sub - portion 814 is greater than that of the third plugging sub - portion 813.

[0147] In this embodiment, for the first etching solution, the etching rate of the second blocking sub - part 812 is greater than that of the first blocking sub - part 811. Therefore, the second blocking sub - part 812 shrinks relative to the first blocking sub - part 811; the etching rate of the second blocking sub - part 812 is greater than that of the third blocking sub - part 813. Therefore, the second blocking sub - part 812 shrinks relative to the third blocking sub - part 813; the etching rate of the fourth blocking sub - part 814 is greater than that of the third blocking sub - part 813. Therefore, the fourth blocking sub - part 814 shrinks relative to the third blocking sub - part 813. The blocking part 81 with such a structure has a better blocking effect on the first gap 10.

[0148] Preferably, the distance between the orthographic projection of the side of the second blocking sub - part 812 facing away from the corresponding isolation opening 301 on the substrate 1 and the orthographic projection of the side of the first blocking sub - part 811 facing away from the corresponding isolation opening 301 on the substrate 1 is the fourth distance L4. The fourth distance L4 is greater than or equal to 2μm and less than or equal to 4μm. The fourth distance L4 is greater than or equal to 2 and less than or equal to 4μm. For example, the fourth distance L4 can be 2μm, 2.5μm, 3μm, 3.5μm or 4μm, etc.

[0149] Preferably, the distance between the orthographic projection of the side of the second blocking sub - part 812 facing away from the corresponding isolation opening 301 on the substrate 1 and the orthographic projection of the side of the third blocking sub - part 813 facing away from the corresponding isolation opening 301 on the substrate 1 is the fifth distance L5. The fifth distance L5 is greater than or equal to 2μm and less than or equal to 4μm. The fifth distance L5 is greater than or equal to 2 and less than or equal to 4μm. For example, the fifth distance L5 can be 2μm, 2.5μm, 3μm, 3.5μm or 4μm, etc.

[0150] Preferably, the distance between the orthographic projection of the side of the fourth blocking sub - part 814 facing away from the corresponding isolation opening 301 on the substrate 1 and the orthographic projection of the side of the third blocking sub - part 813 facing away from the corresponding isolation opening 301 on the substrate 1 is the sixth distance L6. The sixth distance L6 is greater than or equal to 2μm and less than or equal to 4μm. The sixth distance L6 is greater than or equal to 2 and less than or equal to 4μm. For example, the sixth distance L6 can be 2μm, 2.5μm, 3μm, 3.5μm or 4μm, etc.

[0151] Preferably, the fourth distance L4 is equal to the fifth distance L5; and / or, the fourth distance L4 is equal to the sixth distance L6; and / or, the fifth distance L5 is equal to the sixth distance L6. In this way, the protrusion or depression of the first concavo - convex structure 7 can be made more uniform.

[0152] Preferably, the material of the first plugging sub - part 811 includes silicon oxynitride or silicon oxide, the material of the second plugging sub - part 812 includes silicon nitride or silicon oxynitride, the material of the third plugging sub - part 813 includes silicon oxynitride or silicon oxide, and the material of the fourth plugging sub - part 814 includes silicon nitride or silicon oxynitride.

[0153] For the first etching solution, the etching rate of silicon nitride is greater than that of silicon oxynitride, and the etching rate of silicon oxynitride is greater than that of silicon oxide. Therefore, when the material of the second plugging sub - part 812 includes silicon nitride, the material of the first plugging sub - part 811 includes silicon oxynitride or silicon oxide, and the material of the third plugging sub - part 813 includes silicon oxynitride or silicon oxide; when the material of the second plugging sub - part 812 includes silicon oxynitride, the material of the first plugging sub - part 811 includes silicon oxide, and the material of the third plugging sub - part 813 includes silicon oxide. When the material of the fourth plugging sub - part 814 includes silicon nitride, the material of the third plugging sub - part 813 includes silicon oxynitride or silicon oxide; when the material of the fourth plugging sub - part 814 includes silicon oxynitride, the material of the third plugging sub - part 813 includes silicon oxide.

[0154] Preferably, the material of the first plugging sub - part 811 is the same as that of the third plugging sub - part 813, and the material of the second plugging sub - part 812 is the same as that of the fourth plugging sub - part 814.

[0155] When the materials of the second plugging sub - part 812 and the fourth plugging sub - part 814 include silicon nitride, the materials of the first plugging sub - part 811 and the third plugging sub - part 813 include silicon oxynitride or silicon oxide; when the materials of the second plugging sub - part 812 and the fourth plugging sub - part 814 include silicon oxynitride, the materials of the first plugging sub - part 811 and the third plugging sub - part 813 include silicon oxide.

[0156] In some possible implementation manners, please refer to Figure 5 and Figure 6 , the display panel further includes a light - emitting redundant unit 815 and an electrode redundant unit 816 which are sequentially stacked on the side of the fourth plugging sub - part 814 away from the substrate 1, and the side of the edge - wrapping part 91 facing the substrate 1 is in contact with the side of the electrode redundant unit 816 away from the substrate 1.

[0157] Since the side of the edge - wrapping part 91 facing the substrate 1 is in contact with the side of the electrode redundant unit 816 away from the substrate 1, the stability of the edge - wrapping part 91 can be increased, and thus the encapsulation effect of the encapsulation unit 9 on the light - emitting unit 11 can be improved.

[0158] Preferably, please refer to Figure 5 and Figure 6, the blocking part 81 further includes a fifth blocking sub - part 817, and the fifth blocking sub - part 817 is located on the side of at least one of the first blocking sub - part 811, the second blocking sub - part 812, the third blocking sub - part 813, the fourth blocking sub - part 814, the light - emitting redundant unit 815 and the electrode redundant unit 816 that is away from the isolation opening 301. In this way, the blocking effect of the blocking part 81 on the first gap 10 can be further improved by the fifth blocking sub - part 817.

[0159] Preferably, the fifth blocking sub - part 817 extends from the side of the isolation structure 3 away from the substrate 1, sequentially through the sides of the first blocking sub - part 811, the second blocking sub - part 812, the third blocking sub - part 813, the fourth blocking sub - part 814, the light - emitting redundant unit 815 and the electrode redundant unit 816 that are away from the isolation opening 301, and extends to be connected with the edge - wrapping part 91.

[0160] In this way, the fifth blocking sub - part 817 and the edge - wrapping part 91 wrap the first blocking sub - part 811, the second blocking sub - part 812, the third blocking sub - part 813, the fourth blocking sub - part 814, the light - emitting redundant unit 815 and the electrode redundant unit 816 into a whole, which can improve the overall stability of the blocking part 81 and the edge - wrapping part 91. Thus, the encapsulation effect of the encapsulation unit 9 on the light - emitting unit 11 can be improved, and the blocking effect of the blocking part 81 on the first gap 10 can be improved.

[0161] Preferably, the fifth blocking sub - part 817 is mutually engaged with the first concavo - convex structure 7. In this way, the overall stability of the blocking part 81 and the edge - wrapping part 91 can be further improved.

[0162] Preferably, the fifth blocking sub - part 817 and the edge - wrapping part 91 are of the same layer and the same material. When forming the encapsulation unit 9, the edge - wrapping part 91 of the encapsulation unit 9 extends from the side of the blocking part 81 away from the substrate 1 to the side of the blocking part 81 away from the isolation opening 301.

[0163] In some possible implementation manners, please refer to Figure 5 and Figure 6 , the light - emitting unit 11 includes a first electrode 4, a light - emitting part 5 and a second electrode 6 that are sequentially stacked in the direction away from the substrate 1. The display panel further includes a pixel definition layer 2 located between the substrate 1 and the isolation structure 3. The pixel definition layer 2 includes a pixel opening 21, the pixel opening 21 is communicated with the isolation opening 301, and the pixel opening 21 exposes a part of the first electrode 4.

[0164] The arrangement of the isolation structure 3 enables the display panel to form the film layers of different color light-emitting units 11 in different isolation openings 301 without the need for a fine mask. Therefore, when forming the light-emitting material layer, the light-emitting material layer will be partitioned by the isolation structure 3 to form a plurality of spaced-apart light-emitting portions 5. When forming the second electrode material layer, the second electrode material layer will be partitioned by the isolation structure 3 to form a plurality of spaced-apart second electrodes 6. The isolation structure 3 includes a conductive material, and the second electrode 6 is electrically connected to the isolation structure 3. One first electrode 4, one light-emitting portion 5, and one second electrode 6 form one light-emitting unit 11. Among them, the first electrode 4 can be an anode, and the second electrode 6 can be a cathode.

[0165] In this way, different light-emitting units 11 can be made independent of each other, thereby improving the crosstalk between adjacent light-emitting units 11 and enhancing the display effect of the display panel. At the same time, due to the existence of the isolation structure 3, the light-emitting material layer and the second electrode material layer in each color light-emitting unit 11 in the display panel can be prepared as a whole surface first and then patterned, so that the fine mask can be eliminated, and thus the manufacturing cost of the display panel can be saved.

[0166] Preferably, the light-emitting redundant unit 815 is of the same layer and the same material as the light-emitting portion 5. In this way, while forming the light-emitting portion 5, the light-emitting redundant unit 815 can be formed, so that there is no need to set a special process for forming the light-emitting redundant unit 815, thereby reducing the cost of forming the light-emitting redundant unit 815.

[0167] Preferably, the electrode redundant unit 816 is of the same layer and the same material as the second electrode 6. In this way, while forming the second electrode 6, the electrode redundant unit 816 can be formed, so that there is no need to set a special process for forming the electrode redundant unit 816, thereby reducing the cost of forming the electrode redundant unit 816.

[0168] In some possible implementation manners, please refer to Figure 3 and Figure 4 again. There is a second gap between the side of the edge portion 91 facing the substrate 1 and the side of the fourth blocking sub-portion 814 away from the substrate 1, that is, in the direction perpendicular to the substrate 1, the size of the blocking portion 81 is smaller than the size of the corresponding first gap 10.

[0169] Optionally, the light-emitting unit 11 includes a first electrode 4, a light-emitting portion 5, and a second electrode 6 that are sequentially stacked in a direction away from the substrate 1. Along the direction Z perpendicular to the substrate 1, the height D of the second gap is equal to the sum of the thicknesses of the light-emitting portion 5 and the second electrode 6 of the corresponding light-emitting unit 11.

[0170] When forming the light-emitting unit 11, the light-emitting material layer and the second electrode material layer of the light-emitting unit 11 are sequentially formed on the side of the fourth blocking sub-part 814 away from the substrate 1. When patterning the light-emitting unit 11, the light-emitting material layer and the second electrode material layer between the edge portion 91 and the fourth blocking sub-part 814 are removed. Therefore, the height D of the second gap between the edge portion 91 and the fourth blocking sub-part 814 is equal to the sum of the thicknesses of the light-emitting portion 5 and the second electrode 6 of the corresponding light-emitting unit 11.

[0171] In some possible embodiments, please refer to Figures 7 - 10 , one side of the blocking portion 81 close to the corresponding isolation opening 301 has a second concavo-convex structure 12, and the edge portion 91 is in contact with the corresponding second concavo-convex structure 12.

[0172] The isolation opening 301 in "one side of the blocking portion 81 close to the corresponding isolation opening 301" refers to the isolation opening 301 closest to the blocking portion 81. Since both the first concavo-convex structure 7 and the second concavo-convex structure 12 are formed when etching the blocking portion 81, the second concavo-convex structure 12 has all the characteristics of the above-mentioned first concavo-convex structure 7. Since the edge portion 91 is in contact with the second concavo-convex structure 12, the adhesion between the edge portion 91 and the blocking portion 81 can be greatly improved, thereby greatly improving the stability of the encapsulation unit 9, and further greatly improving the encapsulation effect of the encapsulation unit 9 on the light-emitting unit 11.

[0173] Optionally, the edge portion 91 and the corresponding second concavo-convex structure 12 are mutually engaged. In this way, the adhesion between the edge portion 91 and the blocking portion 81 can be further improved.

[0174] Preferably, please refer to Figure 11 , the display panel further includes a third encapsulation layer 14 located on the side of the second encapsulation layer 13 away from the substrate 1.

[0175] Optionally, the materials of the third encapsulation layer 14 all include inorganic materials.

[0176] For example, the first encapsulation layer and the third encapsulation layer 14 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 13 can be formed by ink-jet printing (IJP). The second encapsulation layer 13 and the third encapsulation layer 14 can provide a better encapsulation effect on the light-emitting unit 11, thereby further improving the encapsulation quality of the display panel.

[0177] In some possible embodiments, please refer to again Figure 10, the isolation structure 3 includes a first isolation portion 31 and a second isolation portion 32 that are stacked in sequence along a direction away from the substrate 1. The orthographic projection of the side of the first isolation portion 31 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation portion 32 on the substrate 1.

[0178] Since the second isolation portion 32 is located on the side of the first isolation portion 31 away from the substrate 1 and, in a plane parallel to the plane where the substrate 1 is located, the lateral width of the second isolation portion 32 is greater than the lateral width of the first isolation portion 31, the second isolation portion 32 will cause the light-emitting material layer and the second electrode material layer to be disconnected at the isolation structure 3. Thus, the isolation structure 3 formed by the first isolation portion 31 and the second isolation portion 32 can more easily independently package each light-emitting unit 11, thereby improving the packaging yield of the display panel.

[0179] Preferably, please refer to again Figure 10 , the second electrode 6 of the light-emitting unit 11 is electrically connected to the corresponding first isolation portion 31. The first isolation portion 31 includes a conductive material, and the second electrode 6 corresponding to the light-emitting unit 11 extends to contact the side wall of the first isolation portion 31 to achieve electrical connection between the second electrode 6 corresponding to the light-emitting unit 11 and the first isolation portion 31.

[0180] Please refer to again Figure 11 , the isolation structure 3 further includes a third isolation portion 33 located on the side of the first isolation portion 31 facing the substrate 1, and the second electrode 6 of the light-emitting unit 11 is electrically connected to the corresponding third isolation portion 33.

[0181] The third isolation portion 33 includes a conductive material, and the second electrode 6 corresponding to the light-emitting unit 11 extends to contact the side wall of the third isolation portion 33 to achieve electrical connection between the second electrode 6 corresponding to the light-emitting unit 11 and the corresponding third isolation portion 33.

[0182] Specifically, the material of the third isolation portion 33 includes molybdenum; and / or, the material of the first isolation portion 31 includes aluminum; and / or, the material of the second isolation portion 32 includes titanium. Thus, when the isolation structure 3 cuts off the second electrode material layer into the second electrode 6, the second electrode 6 is more easily electrically connected to the first isolation portion 31 and / or the third isolation portion 33.

[0183] The orthographic projection of the light-emitting portion 5 on the substrate 1 is located outside the orthographic projection of the third isolation portion 33 and / or the first isolation portion 31 on the substrate 1. Thus, the light-emitting portion 5 does not overlap with the isolation structure 3, thereby effectively improving the crosstalk problem between the light-emitting units 11.

[0184] In some possible implementation manners, please refer to Figure 12 , the present application further provides a method for manufacturing a display panel, and the method includes:

[0185] S10: Form a pixel defining material layer 15 and an isolation material layer 16 in sequence on one side of the substrate 1.

[0186] Please refer to Figure 13 , and form a pixel defining material layer 15 and an isolation material layer 16 in sequence on one side of the substrate 1.

[0187] S11: Form a plugging material layer on the side of the isolation material layer 16 away from the substrate 1.

[0188] Please refer to Figure 14 , and form at least two layers of plugging material layers on the side of the isolation material layer 16 away from the substrate 1, including a first plugging material layer 17, a second plugging material layer 18, a third plugging material layer 19, and a fourth plugging material layer 20 whose etching selectivity ratios for the first etching solution are not equal to 1.

[0189] S12: Pattern the plugging material layer so that the plugging material layer forms a plugging layer 8 including a plurality of spaced-apart plugging portions 81, and form a first concavo-convex structure 7 on the side of the plugging portion 81 facing away from the isolation opening 301.

[0190] Please refer to Figure 15 , and pattern the fourth plugging material layer 20, the third plugging material layer 19, the second plugging material layer 18, and the first plugging material layer 17 in sequence with the first etching solution to form a plugging portion 81 including a fourth plugging sub-portion 814, a third plugging sub-portion 813, a second plugging sub-portion 812, and a first plugging sub-portion 811.

[0191] S13: Pattern the isolation material layer 16 and the pixel defining material layer 15 in sequence to form an isolation structure 3 including an isolation opening 301 and a pixel defining layer 2 including a pixel opening 21 respectively.

[0192] Please refer to Figure 16 , and pattern the isolation material layer 16 and the pixel defining material layer 15 in sequence.

[0193] S14: Form at least part of a light-emitting unit 11 different from the material of the plugging layer 8 in the isolation opening 301 and form a packaging unit 9 on the side of the light-emitting unit 11 away from the substrate 1, so that the edge portion 91 of the packaging unit 9 on the side of the isolation structure 3 away from the substrate 1 wraps at least part of the plugging portion 81.

[0194] Please refer to again Figures 7 - 10 , form at least part of a light-emitting unit 11 in the isolation opening 301 and form a packaging unit 9 on the side of the light-emitting unit 11 away from the substrate 1. Different display panels can be formed according to different needs, such as Figures 7 - 10 different ones.

[0195] S15 : forming a second encapsulation layer 13 made of a material different from that of the blocking layer 8 on a side of the encapsulation unit 11 away from the substrate 1 .

[0196] In the display panel formed by the above method, a blocking portion 81 can be formed on the side of the isolation structure 3 away from the substrate 1. The blocking portion 81 can block at least part of the first gap 10. In the process of forming the rear light-emitting unit 11, the photoresist and the like of the patterned rear light-emitting unit 11 are not easy to enter the front light-emitting unit 11 through the first gap 10, so that the front light-emitting unit 11 is not easy to be damaged. Similarly, in the process of preparing the display panel, the relevant liquid is not easy to enter the light-emitting unit 11 through the first gap 10, so that the corresponding light-emitting unit 11 is not easy to be damaged, so that the light-emitting unit 11 is not easy to form dark spots, and finally the display effect of the display panel can be improved.

[0197] Since the etching selectivity ratios of the first blocking material layer 17, the second blocking material layer 18, the third blocking material layer 19 and the fourth blocking material layer 20 for the first etching solution are not equal to 1, the side of the formed blocking portion 81 away from the isolation opening 301 will form a first concave-convex structure 7, and the side of the blocking portion 81 facing the isolation opening 301 will form a second concave-convex structure 12, and the edging portion 91 can extend from the second concave-convex structure 12 through the side of the blocking portion 81 away from the substrate 1 to be interlocked with the first concave-convex structure 7. In this way, the stability of the packaging unit 9 and the blocking portion 81 can be greatly improved, thereby improving the packaging effect of the packaging unit 9 on the light-emitting unit 11, and improving the packaging effect of the blocking portion 81 on the first gap 10, so that the light-emitting unit 11 is not easy to form dark spots, thereby greatly improving the display effect of the display panel.

[0198] In some possible implementations, the present application further provides an electronic device, the electronic device comprising the display panel of the present application, or comprising a display panel prepared by the method for preparing a display panel of the present application. The electronic device may include a device with image processing capabilities, such as a server, a personal computer, a laptop computer, etc. Since the electronic device comprises the display panel of the present application, the display quality of the electronic device is better.

[0199] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0200] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; An isolation structure, located on one side of the substrate, the isolation structure encloses a plurality of isolation openings; a light emitting unit, at least a portion of which is located in the corresponding isolation opening; A first encapsulation layer, comprising a plurality of encapsulation units arranged at intervals, wherein the encapsulation units are located on a side of the corresponding light-emitting unit away from the substrate, and the encapsulation units include an edge portion located on a side of the isolation structure away from the substrate, and a first gap is formed between a side of the edge portion close to the substrate and a side of the isolation structure away from the substrate; a second packaging layer, located on a side of the first packaging layer away from the substrate; The blocking layer includes a plurality of blocking parts arranged at intervals, at least part of the blocking parts is located in the corresponding first gap, wherein the material of the blocking layer is different from the material of the light-emitting unit, and the material of the blocking layer is different from the material of the second encapsulation layer.

2. The display panel according to claim 1, characterized in that: The materials of the blocking layer and the first encapsulation layer include inorganic materials; Preferably, the material of the second encapsulation layer includes organic material.

3. The display panel according to claim 1, characterized in that: The side of the blocking portion facing away from the corresponding isolation opening has a first concave-convex structure; Preferably, the blocking portion comprises a plurality of blocking sub-portions stacked in sequence in a direction away from the substrate, and at least two layers of the blocking sub-portions form the first concave-convex structure on a side away from the isolation opening; Preferably, a side of the blocking portion close to the substrate is in contact with a side of the isolation structure away from the substrate; Preferably, the edge portion extends from a side of the blocking portion toward the isolation opening to a side of the blocking portion away from the substrate; Preferably, a side of the blocking portion close to the corresponding isolation opening is in contact with the corresponding edge-wrapping portion.

4. The display panel according to claim 3, characterized in that: The blocking portion comprises a first blocking sub-portion, a second blocking sub-portion, a third blocking sub-portion and a fourth blocking sub-portion which are sequentially stacked in a direction away from the substrate, and the first blocking sub-portion, the second blocking sub-portion, the third blocking sub-portion and the fourth blocking sub-portion are formed on a side away from the corresponding isolation opening with the first concave-convex structure; Preferably, along a direction perpendicular to the substrate, the thickness of the first blocking sub-portion is greater than or equal to and less than or equal to Preferably, along a direction perpendicular to the substrate, the thickness of the second blocking sub-portion is greater than or equal to and less than or equal to Preferably, along a direction perpendicular to the substrate, the thickness of the third blocking sub-portion is greater than or equal to and less than or equal to Preferably, along a direction perpendicular to the substrate, the thickness of the fourth blocking sub-portion is greater than or equal to and less than or equal to 5. The display panel according to claim 4, characterized in that: The orthographic projection of the first blocking sub-portion on the substrate is located within the orthographic projection of the second blocking sub-portion on the substrate; Preferably, the orthographic projection of the third blocking sub-portion on the substrate is located within the orthographic projection of the second blocking sub-portion on the substrate; Preferably, the orthographic projection of the third blocking sub-portion on the substrate is located within the orthographic projection of the fourth blocking sub-portion on the substrate; Preferably, a distance between an orthographic projection of a side of the first blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the second blocking sub-portion away from the corresponding isolation opening on the substrate is a first distance, and the first distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, a distance between an orthographic projection of a side of the third blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the second blocking sub-portion away from the corresponding isolation opening on the substrate is a second distance, and the second distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, a distance between an orthographic projection of a side of the third blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the fourth blocking sub-portion away from the corresponding isolation opening on the substrate is a third distance, and the third distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, the first distance is equal to the second distance; and / or, the first distance is equal to the third distance; and / or, the second distance is equal to the third distance.

6. The display panel according to claim 5, characterized in that: The material of the first blocking sub-portion includes silicon nitride or silicon oxynitride; Preferably, the material of the second blocking sub-portion includes silicon oxynitride or silicon oxide; Preferably, the material of the third blocking sub-portion includes silicon nitride or silicon oxynitride; Preferably, the material of the fourth blocking sub-portion includes silicon oxynitride or silicon oxide; Preferably, the material of the first blocking sub-portion is the same as the material of the third blocking sub-portion; Preferably, the material of the second blocking sub-portion is the same as that of the fourth blocking sub-portion.

7. The display panel according to claim 4, characterized in that: The orthographic projection of the second blocking sub-portion on the substrate is located within the orthographic projection of the first blocking sub-portion on the substrate; Preferably, the orthographic projection of the second blocking sub-portion on the substrate is located within the orthographic projection of the third blocking sub-portion on the substrate; Preferably, the orthographic projection of the fourth blocking sub-portion on the substrate is located within the orthographic projection of the third blocking sub-portion on the substrate; Preferably, a distance between an orthographic projection of a side of the second blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the first blocking sub-portion away from the corresponding isolation opening on the substrate is a fourth distance, and the fourth distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, a distance between an orthographic projection of a side of the second blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the third blocking sub-portion away from the corresponding isolation opening on the substrate is a fifth distance, and the fifth distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, a distance between an orthographic projection of a side of the fourth blocking sub-portion away from the corresponding isolation opening on the substrate and an orthographic projection of a side of the third blocking sub-portion away from the corresponding isolation opening on the substrate is a sixth distance, and the sixth distance is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, the fourth distance is equal to the fifth distance; and / or, the fourth distance is equal to the sixth distance; and / or, the fifth distance is equal to the sixth distance.

8. The display panel according to claim 7, characterized in that: The material of the first blocking sub-portion includes silicon oxynitride or silicon oxide; Preferably, the material of the second blocking sub-portion includes silicon nitride or silicon oxynitride; Preferably, the material of the third blocking sub-portion includes silicon oxynitride or silicon oxide; Preferably, the material of the fourth blocking sub-portion includes silicon nitride or silicon oxynitride; Preferably, the material of the first blocking sub-portion is the same as that of the third blocking sub-portion; Preferably, the material of the second blocking sub-portion is the same as that of the fourth blocking sub-portion.

9. The display panel according to any one of claims 4 to 8, characterized in that: The display panel further comprises a light emitting redundant unit and an electrode redundant unit which are sequentially stacked on a side of the fourth blocking sub-portion away from the substrate, and a side of the edge wrapping portion facing the substrate contacts a side of the electrode redundant unit away from the substrate; Preferably, the blocking portion further includes a fifth blocking sub-portion, and the fifth blocking sub-portion is located on a side of at least one of the first blocking sub-portion, the second blocking sub-portion, the third blocking sub-portion, the fourth blocking sub-portion, the light emitting redundant unit, and the electrode redundant unit away from the corresponding isolation opening; Preferably, the fifth blocking sub-portion extends from a side of the corresponding isolation structure away from the substrate through the first blocking sub-portion, the second blocking sub-portion, the third blocking sub-portion, the fourth blocking sub-portion, the light-emitting redundant unit and the electrode redundant unit away from the corresponding isolation opening to connect with the corresponding edge-wrapping portion; Preferably, the fifth blocking sub-portion and the first concave-convex structure are interlocked; Preferably, the fifth blocking sub-portion and the edge-wrapping portion are made of the same layer and the same material; Preferably, the light-emitting unit comprises a first electrode, a light-emitting portion and a second electrode which are sequentially stacked in a direction away from the substrate; Preferably, the redundancy light-emitting unit and the light-emitting portion are made of the same layer and material; Preferably, the electrode redundancy unit and the second electrode are made of the same layer and the same material.

10. The display panel according to any one of claims 4 to 8, characterized in that: A second gap is formed between a side of the edge-wrapping portion facing the substrate and a side of the corresponding fourth blocking sub-portion away from the substrate; Preferably, in a direction perpendicular to the substrate, the size of the blocking portion is smaller than the size of the corresponding first gap; Preferably, the light-emitting unit includes a first electrode, a light-emitting portion and a second electrode which are stacked in sequence in a direction away from the substrate, and along a direction perpendicular to the substrate, a height of the second gap is equal to the sum of the thicknesses of the light-emitting portion and the second electrode corresponding to the light-emitting unit.

11. The display panel according to any one of claims 1 to 8, characterized in that: The blocking portion has a second concave-convex structure on one side close to the corresponding isolation opening, and the edge-wrapping portion is in contact with the corresponding second concave-convex structure; Preferably, the edge-wrapped portion and the corresponding second concave-convex structure are interlocked; Preferably, the display panel further comprises a third encapsulation layer located on a side of the second encapsulation layer away from the substrate; Preferably, the material of the third encapsulation layer comprises inorganic material.

12. The display panel according to any one of claims 1 to 8, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within the orthographic projection of the second isolation portion on the substrate; Preferably, the second electrode of the light-emitting unit is electrically connected to the corresponding first isolation portion; and / or, the isolation structure further comprises a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode of the light-emitting unit is electrically connected to the corresponding third isolation portion; Preferably, the material of the third isolation portion includes molybdenum; and / or the material of the first isolation portion includes aluminum; and / or the material of the second isolation portion includes titanium.

13. A method for preparing a display panel, characterized in that: The method comprises: forming a pixel defining material layer and an isolation material layer in sequence on one side of the substrate; forming a blocking material layer on a side of the isolation material layer away from the substrate; Performing patterning on the blocking material layer so that the blocking material layer forms a blocking layer including a plurality of blocking portions arranged at intervals; performing patterning on the isolation material layer and the pixel definition material layer in sequence to form an isolation structure including an isolation opening and a pixel definition layer including a pixel opening, respectively; Forming at least part of the light-emitting unit with a material different from that of the blocking layer in the isolation opening, and forming a packaging unit on a side of the light-emitting unit away from the substrate, so that the edge portion of the packaging unit located on the side of the isolation structure away from the substrate wraps at least part of the blocking portion; A second encapsulation layer made of a material different from that of the blocking layer is formed on a side of the encapsulation unit away from the substrate.

14. The method for preparing a display panel according to claim 13, characterized in that: The step of forming a blocking material layer on a side of the isolation material layer away from the substrate and patterning the blocking material layer comprises: At least two layers of the blocking material layer having an etching selectivity ratio of not equal to 1 for the first etching solution are formed in sequence on the side of the isolation material layer away from the substrate, namely, a first blocking material layer, a second blocking material layer, a third blocking material layer and a fourth blocking material layer; The fourth blocking material layer, the third blocking material layer, the second blocking material layer and the first blocking material layer are patterned in sequence with the first etching solution to form the blocking portion including the fourth blocking sub-portion, the third blocking sub-portion, the second blocking sub-portion and the first blocking sub-portion.

15. An electronic device, characterized in that: The electronic device comprises the display panel according to any one of claims 1 to 12, or comprises a display panel prepared by the method for preparing a display panel according to claim 13 or 14.

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