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 first packaging layer and a light filtering layer, the isolation structure encloses to form an isolation opening, the first packaging layer comprises a plurality of packaging units arranged at intervals, and the light filtering layer is arranged in the isolation opening. The side, away from the substrate, of at least one packaging unit comprises a packaging groove, the light filtering layer comprises a plurality of light filtering parts arranged at intervals, and orthographic projections of the light filtering parts on the substrate cover orthographic projections of the light emitting units on the substrate. According to the display panel, the light filtering layer is arranged on the side, away from the substrate, of the first packaging layer, the light emitting efficiency of the corresponding light emitting unit can be greatly improved, and therefore the display effect of the display panel can be greatly improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display panels.

[0003] However, there are still some problems with display panels 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, wherein the display panel includes:

[0005] substrate;

[0006] An isolation structure, located on one side of the substrate, the isolation structure encloses an isolation opening;

[0007] a light emitting unit, at least partly located in the isolation opening;

[0008] A first encapsulation layer is located on a side of the light-emitting unit away from the substrate, the first encapsulation layer comprises a plurality of encapsulation units arranged at intervals, and a side of at least one of the encapsulation units away from the substrate comprises an encapsulation groove;

[0009] The filter layer is located on a side of the first packaging layer away from the substrate, and the filter layer includes a plurality of filter parts arranged at intervals, and the orthographic projections of the filter parts on the substrate cover the orthographic projections of the light-emitting units on the substrate.

[0010] In some possible implementations, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and the encapsulation groove of the encapsulation unit located on a side of the first light-emitting unit away from the substrate includes a first sealing structure, or the encapsulation unit located on a side of the first light-emitting unit away from the substrate includes a first encapsulation sub-portion, and the first encapsulation sub-portion fills the encapsulation groove located on a side of the first light-emitting unit away from the substrate;

[0011] Preferably, the encapsulation groove of the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a first opening structure, or the encapsulation groove of the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a second sealing structure, or the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a second encapsulation sub-portion, and the second encapsulation sub-portion fills the encapsulation groove located on the side of the second light-emitting unit away from the substrate;

[0012] Preferably, the light-emitting unit further comprises a third light-emitting unit, and the encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a second opening structure, or the encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a third sealing structure, or the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a third encapsulation sub-portion, and the third encapsulation sub-portion fills the encapsulation groove located on the side of the third light-emitting unit away from the substrate;

[0013] Preferably, the orthographic projection of the packaging groove on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0014] Preferably, the orthographic projection of the first packaging sub-portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0015] Preferably, the orthographic projection of the second packaging sub-portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0016] Preferably, an orthographic projection of the third packaging sub-unit on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate;

[0017] Preferably, the filter layer further comprises a plurality of light shielding portions arranged at intervals, and the orthographic projections of the light shielding portions on the substrate at least partially overlap with the orthographic projections of the isolation structures on the substrate;

[0018] Preferably, along the arrangement direction of the isolation openings, the filter portion and the light shielding portion are arranged at intervals;

[0019] Preferably, the color of the filter portion is the same as the color of light emitted by the light-emitting unit located on a side of the filter portion close to the substrate;

[0020] Preferably, the orthographic projection of the filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0021] Preferably, the orthographic projection of the light shielding portion on the substrate is located within the orthographic projection range of the isolation structure on the substrate;

[0022] Preferably, the light emission wavelength of the first light emitting unit is shorter than that of the second light emitting unit; and / or the light emission wavelength of the second light emitting unit is shorter than that of the third light emitting unit.

[0023] In some possible implementations, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit, the filter portion includes a first filter portion located on a side of the first light-emitting unit away from the substrate and a second filter portion located on a side of the second light-emitting unit away from the substrate, a first distance exists between the side of the first filter portion away from the substrate and the surface of the substrate, a second distance exists between the side of the second filter portion away from the substrate and the surface of the substrate, and the first distance is equal to the second distance;

[0024] Preferably, the light-emitting unit further includes a third light-emitting unit, and the filter section further includes a third filter section located at a side of the third light-emitting unit away from the substrate, a side of the third filter section away from the substrate has a third distance to the substrate surface, and the second distance is equal to the third distance;

[0025] Preferably, the first distance, the second distance and the third distance are the maximum distances from the side of the filter portion away from the substrate to the substrate, or are the average distances from each point on the side of the filter portion away from the substrate to the substrate, or are the distances between the filter portion and the substrate along a direction perpendicular to the substrate passing through the center of the light-emitting unit.

[0026] In some possible implementations, the packaging unit includes a first packaging portion located in the isolation opening, a second packaging portion covering a side wall of the isolation structure facing the isolation opening, and a third packaging portion located on a side of the isolation structure facing away from the substrate;

[0027] Along a direction perpendicular to the substrate, a thickness of the first encapsulation portion located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the first encapsulation portion located on a side of the second light-emitting unit away from the substrate;

[0028] Preferably, the thickness of the second encapsulation portion is the thickness of the second encapsulation portion along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the second encapsulation portion close to the substrate;

[0029] Preferably, the filter portion comprises a first filter portion located at a side of the first light emitting unit away from the substrate and a second filter portion located at a side of the second light emitting unit away from the substrate, and along a direction perpendicular to the substrate, a thickness of the filter portion located at a side of the first light emitting unit away from the substrate is smaller than a thickness of the filter portion located at a side of the second light emitting unit away from the substrate;

[0030] Preferably, along a direction perpendicular to the substrate, a thickness of the first encapsulation portion located on a side of the second light-emitting unit away from the substrate is greater than or equal to a thickness of the first encapsulation portion located on a side of the third light-emitting unit away from the substrate;

[0031] Preferably, the filter portion includes a third filter portion located on a side of the third light emitting unit away from the substrate, and along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the second light emitting unit away from the substrate is less than or equal to a thickness of the filter portion located on a side of the third light emitting unit away from the substrate;

[0032] Preferably, the orthographic projection of the first packaging portion on the substrate covers the orthographic projection of the light emitting unit on the substrate.

[0033] In some possible implementations, the display panel further includes a second encapsulation layer located on a side of the filter layer away from the substrate, and a surface of the second encapsulation layer on a side away from the substrate is flat;

[0034] Preferably, the display panel further comprises a third encapsulation layer located on a side of the second encapsulation layer away from the substrate;

[0035] Preferably, the materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials;

[0036] Preferably, the material of the second encapsulation layer includes organic material.

[0037] In some possible implementations, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and a distance from a side of the filter corresponding to the first light-emitting unit away from the substrate to the substrate is greater than a distance from a side of the filter corresponding to the second light-emitting unit away from the substrate to the substrate;

[0038] Preferably, the distance from the side of the filter portion corresponding to the second light-emitting unit away from the substrate to the substrate is greater than or equal to the distance from the side of the filter portion corresponding to the third light-emitting unit away from the substrate to the substrate;

[0039] Preferably, the distance from the side of the filter portion away from the substrate to the substrate is the maximum distance from the side of the filter portion away from the substrate to the substrate, or the average distance from each point on the side of the filter portion away from the substrate to the substrate, or the distance between the filter portion and the substrate along a direction perpendicular to the substrate passing through the center of the light-emitting unit.

[0040] In some possible implementations, along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate;

[0041] Preferably, along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate is greater than or equal to a thickness of the encapsulation unit located on a side of the third light-emitting unit away from the substrate;

[0042] Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the second light emitting unit away from the substrate;

[0043] Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the second light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the third light emitting unit away from the substrate.

[0044] In some possible implementations, the packaging unit is spaced apart on a side of the isolation structure away from the substrate;

[0045] Preferably, there is a gap between the packaging unit located on a side of the isolation structure away from the substrate and a side of the isolation structure away from the substrate;

[0046] Preferably, the filter portion fills at least a portion of the gap;

[0047] Preferably, the orthographic projection of the packaging unit on the substrate covers the orthographic projection of the isolation opening on the substrate and covers part of the orthographic projection of the isolation structure on the substrate;

[0048] 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;

[0049] Preferably, the display panel further comprises a pixel defining layer located on a side of the first electrode away from the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate; the pixel defining layer comprises a pixel opening exposing at least a portion of the first electrode;

[0050] Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0051] In some possible implementations, the isolation structure includes a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, and an orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0052] Preferably, the second electrode of the light-emitting unit is electrically connected to the 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 third isolation portion;

[0053] Preferably, the material of the third isolation portion includes molybdenum metal; and / or the material of the first isolation portion includes aluminum metal; and / or the material of the second isolation portion includes titanium metal.

[0054] In some possible implementations, the packaging groove of the packaging unit located on the side of the third light-emitting unit away from the substrate includes a second opening structure, a first filter portion having the same color as the first filter portion is disposed in the second opening structure, and the first filter portion at least partially covers a side wall of the second opening structure facing the isolation structure;

[0055] Preferably, the orthographic projection of the second opening structure on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0056] Preferably, the orthographic projection of the first filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0057] Preferably, a second filter sub-section having the same color as the second filter sub-section is disposed in the second opening structure, and the second filter sub-section at least partially covers a side wall of the second opening structure facing the isolation structure;

[0058] Preferably, the orthographic projection of the second filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate;

[0059] Preferably, a first filter sub-section having the same color as the first filter sub-section and a second filter sub-section having the same color as the second filter sub-section are arranged in the second opening structure, and the first filter sub-section and the second filter sub-section are arranged in sequence along the opening direction of the second opening structure;

[0060] Preferably, the orthographic projections of the first filter section and the second filter section on the substrate at least partially overlap with the orthographic projection of the isolation structure on the substrate.

[0061] In some possible implementations, the present application further provides a display panel, comprising:

[0062] substrate;

[0063] An isolation structure, located on one side of the substrate, the isolation structure encloses an isolation opening;

[0064] A light-emitting unit, at least partially located in the isolation opening, the light-emitting unit comprising a first light-emitting unit and a second light-emitting unit;

[0065] A filter layer is located on a side of the light emitting unit away from the substrate, the filter layer comprises a plurality of filter parts arranged at intervals, and the orthographic projection of the filter part on the substrate covers the orthographic projection of the light emitting unit on the substrate;

[0066] The distance from the side of the filter corresponding to the first light-emitting unit away from the substrate to the substrate is equal to the distance from the side of the filter corresponding to the second light-emitting unit away from the substrate to the substrate.

[0067] In some possible implementations, along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate;

[0068] Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is smaller than a thickness of the filter portion located on a side of the second light emitting unit away from the substrate;

[0069] Preferably, the thickness of the packaging unit is the thickness of the packaging unit along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the packaging unit close to the substrate;

[0070] Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter portion close to the substrate.

[0071] In some possible implementations, the present application further provides a display panel, comprising:

[0072] substrate;

[0073] An isolation structure, located on one side of the substrate, the isolation structure encloses an isolation opening;

[0074] A light-emitting unit, at least partially located in the isolation opening, the light-emitting unit comprising a first light-emitting unit and a second light-emitting unit;

[0075] A filter layer is located on a side of the light emitting unit away from the substrate, the filter layer comprises a plurality of filter parts arranged at intervals, and the orthographic projection of the filter part on the substrate covers the orthographic projection of the light emitting unit on the substrate;

[0076] Wherein, the distance from the side of the filter portion corresponding to the first light-emitting unit away from the substrate to the substrate is greater than the distance from the side of the filter portion corresponding to the second light-emitting unit away from the substrate to the substrate.

[0077] In some possible implementations, along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate;

[0078] Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the second light emitting unit away from the substrate;

[0079] Preferably, the thickness of the packaging unit is the thickness of the packaging unit along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the packaging unit close to the substrate;

[0080] Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter portion close to the substrate.

[0081] In some possible implementations, the present application further provides a method for preparing a display panel, the method comprising:

[0082] providing a substrate;

[0083] An isolation structure is formed on one side of the substrate, wherein the isolation structure encloses an isolation opening;

[0084] forming at least part of the light emitting unit in the isolation opening and forming a first encapsulation layer on a side of the light emitting unit away from the substrate, wherein the first encapsulation layer comprises a plurality of encapsulation units arranged at intervals, and a side of at least one of the encapsulation units away from the substrate comprises an encapsulation groove;

[0085] A filter layer is formed on a side of the first packaging layer away from the substrate, the filter layer comprising a plurality of filter parts arranged at intervals, and the orthographic projections of the filter parts on the substrate cover the orthographic projections of the light-emitting units on the substrate.

[0086] In some possible implementations, the present application further provides an electronic device, which includes the display panel described in the present application, or includes a display panel prepared by the method for preparing the display panel described in the present application.

[0087] Compared with the prior art, this application has the following beneficial effects:

[0088] The present application provides a display panel, a method for manufacturing a display panel, and an electronic device. By setting a filter layer on a side of a first packaging layer away from a substrate, the light extraction efficiency of a corresponding light-emitting unit can be greatly improved, thereby greatly improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0090] Figure 1 A cross-sectional schematic diagram of a display panel including a filter layer provided in an embodiment of the present application;

[0091] Figure 2 A schematic cross-sectional view of a display panel provided in an embodiment of the present application, in which a packaging unit corresponding to a first light-emitting unit includes a first sealing structure, a packaging unit corresponding to a second light-emitting unit includes a first opening structure, and a packaging unit corresponding to a third light-emitting unit includes a second opening structure;

[0092] Figure 3 A cross-sectional schematic diagram showing that the first packaging sub-portion corresponding to the first light-emitting unit of the display panel provided in an embodiment of the present application fills the corresponding packaging groove, the packaging unit corresponding to the second light-emitting unit includes a first opening structure, and the packaging unit corresponding to the third light-emitting unit includes a second opening structure;

[0093] Figure 4a A schematic cross-sectional view of a display panel provided in an embodiment of the present application, in which a packaging unit corresponding to a first light-emitting unit includes a first sealing structure, a packaging unit corresponding to a second light-emitting unit includes a second sealing structure, and a packaging unit corresponding to a third light-emitting unit includes a second opening structure;

[0094] Figure 4b A cross-sectional schematic diagram of a first filter sub-part of a display panel provided by an embodiment of the present application, in which the remaining first filter sub-part is located in a second opening structure;

[0095] Figure 4cA cross-sectional schematic diagram of a second filter sub-part of a display panel provided in an embodiment of the present application, wherein the remaining second filter sub-part is located in a second opening structure;

[0096] Figure 4d A cross-sectional schematic diagram of the first filter section and the second filter section of the display panel provided in an embodiment of the present application, wherein the remaining first filter section and the second filter section are both located in the second opening structure;

[0097] Figure 5 A schematic cross-sectional view of a display panel provided in an embodiment of the present application, in which a first encapsulation sub-portion corresponding to a first light-emitting unit fills a corresponding encapsulation groove, a second encapsulation sub-portion corresponding to a second light-emitting unit fills a corresponding encapsulation groove, and an encapsulation unit corresponding to a third light-emitting unit includes a second opening structure;

[0098] Figure 6 A schematic cross-sectional view of a display panel provided in an embodiment of the present application, in which a packaging unit corresponding to a first light-emitting unit includes a first sealing structure, a packaging unit corresponding to a second light-emitting unit includes a second sealing structure, and a packaging unit corresponding to a third light-emitting unit includes a third sealing structure;

[0099] Figure 7 A cross-sectional schematic diagram of a display panel provided in an embodiment of the present application, in which a first encapsulation sub-portion corresponding to a first light-emitting unit fills a corresponding encapsulation groove, a second encapsulation sub-portion corresponding to a second light-emitting unit fills a corresponding encapsulation groove, and a third encapsulation sub-portion corresponding to a third light-emitting unit fills a corresponding encapsulation groove;

[0100] Figure 8 A schematic cross-sectional view showing that the distances from the side of the filter portion away from the substrate to the substrate are all equal, provided in an embodiment of the present application, of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit;

[0101] Fig. 9 A schematic cross-sectional view showing that the distances from the side of the filter portion away from the substrate to the substrate decreases successively, which is provided in the embodiment of the present application;

[0102] Fig.10 A cross-sectional schematic diagram showing that the distances from the sides of the filter portions corresponding to the first light-emitting unit and the second light-emitting unit to the substrate are successively reduced, and the distances from the sides of the filter portions corresponding to the second light-emitting unit and the third light-emitting unit to the substrate are equal, provided in an embodiment of the present application;

[0103] Fig.11 The filter layer provided in the embodiment of the present application also includes one of the cross-sectional schematic diagrams of the light shielding portion;

[0104] Fig.12 The filter layer provided in the embodiment of the present application further includes a second cross-sectional schematic diagram of a light shielding portion;

[0105] Fig.13 The filter layer provided in the embodiment of the present application also includes a third cross-sectional schematic diagram of a light shielding portion;

[0106] Fig.14 The display panel provided in the embodiment of the present application further includes a cross-sectional schematic diagram of a third encapsulation layer;

[0107] Fig.15 A schematic diagram of a process for preparing a display panel provided in an embodiment of the present application;

[0108] Fig.16 A cross-sectional view of forming a first electrode layer on one side of a substrate provided in an embodiment of the present application;

[0109] Fig.17 A cross-sectional schematic diagram of sequentially forming a pixel defining material layer and an isolation material layer on a side of a first electrode layer away from a substrate provided in an embodiment of the present application;

[0110] Fig.18 A schematic cross-sectional view of an embodiment of the present application after sequentially etching the isolation material layer and the pixel definition material layer;

[0111] Fig.19 The cross-sectional view of the light-emitting portion, the second electrode and the encapsulation unit of the light-emitting unit formed in the isolation opening provided in the embodiment of the present application is schematic.

[0112] Figure numerals: 1, substrate; 2, pixel defining layer; 21, pixel opening; 3, isolation structure; 31, first isolation portion; 32, second isolation portion; 33, third isolation portion; 4, first electrode; 5, light-emitting portion; 6, second electrode; 7, light-emitting unit; 8, isolation opening; 9, first encapsulation layer; 91, encapsulation unit; 901, first encapsulation portion; 902, second encapsulation portion; 903, third encapsulation portion; 911, encapsulation groove; 912, first sealing structure; 913, first encapsulation sub-portion; 914, second sealing Opening structure; 915, second packaging sub-unit; 916, third sealing structure; 917, third packaging sub-unit; 918, first opening structure; 919, second opening structure; 10, filter layer; 101, filter unit; 1011, first filter unit; 10111, first filter unit; 1012, second filter unit; 10121, second filter unit; 1013, third filter unit; 102, shading unit; 11, second packaging layer; 13, third packaging layer; 14, pixel defining material layer; 15, isolation material layer. DETAILED DESCRIPTION

[0113] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0114] 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 for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0115] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0116] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0117] It should be noted that, in the absence of conflict, different features in the embodiments of the present application may be combined with each other.

[0118] Improving the density of light-emitting units in a display panel (i.e., pixel density) is an important way to improve display effects. However, the display panels currently made using fine metal evaporation mask (FMM) technology cannot further increase the density of light-emitting units due to technical limitations. The inventors have found through long-term research that in order to solve the technical problem that the density of light-emitting units cannot be further increased, an isolation structure is set in some display panels. When the light-emitting functional layer and the second electrode are evaporated in the entire layer, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Through multiple evaporation and multiple etching processes (i.e., light-emitting unit patterning), light-emitting units of different colors can be formed in different isolation openings.

[0119] Among them, patent CN118251982A, patent 202410864269.8, patent PCT / CN2024 / 098407, patent PCT / CN2024 / 102783, patent PCT / CN2024 / 098217, patent PCT / CN20241099419 and patent PCT / CN20241099072 record relevant technical solutions of isolation structure and encapsulation layer, and their contents are incorporated into this application by reference for reference.

[0120] The display panel in the related art includes a substrate, a light-emitting unit located on one side of the substrate, an encapsulation layer located on a side of the light-emitting unit away from the substrate, and a polarizer located on a side of the encapsulation layer away from the substrate. The polarizer can reduce the reflectivity of the display panel, but greatly reduces the light extraction efficiency of the light-emitting unit, thereby reducing the display effect of the display panel.

[0121] In order to solve the above-mentioned technical problems, the inventor innovatively designed the following technical solutions, and the specific implementation solutions of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the defects existing in the solutions in the above-mentioned prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above-mentioned technical problems and the solutions proposed in this embodiment below for the above-mentioned problems should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as the technical content known to those skilled in the art.

[0122] See also Figure 1 This embodiment provides a display panel, which includes a substrate 1, an isolation structure 3, a light-emitting unit 7 and a first encapsulation layer 9.

[0123] The substrate 1 may include a substrate and a plurality of drive units located on one side of the substrate, and each drive unit may include one or more semiconductor switch devices. The semiconductor switch device may be formed by the cooperation of a plurality of film layers in the substrate 1, for example, the semiconductor switch device may be a thin film transistor formed by the cooperation of a plurality of film layers.

[0124] The isolation structure 3 is located on one side of the substrate 1 . The isolation structure 3 encloses an isolation opening 8 . At least a portion of the light emitting unit 7 is located in the isolation opening 8 .

[0125] The first encapsulation layer 9 is located on the side of the light-emitting unit 7 away from the substrate 1. The first encapsulation layer 9 includes a plurality of encapsulation units 91 arranged at intervals. At least some of the encapsulation units 91 extend from the side of the isolation structure 3 toward the isolation opening 8 to the side of the isolation structure 3 away from the substrate 1. The side of at least one encapsulation unit 91 away from the substrate 1 includes a encapsulation groove 911.

[0126] Since the side of the isolation structure 3 facing the isolation opening 8 is recessed toward the side away from the isolation opening 8 , the packaging unit 91 extends along the side wall of the isolation structure 3 , and a packaging groove 911 is formed at the recessed position on the side away from the substrate 1 .

[0127] The filter layer 10 is located on a side of the first encapsulation layer 9 away from the substrate 1 . The filter layer 10 includes a plurality of filter portions 101 arranged at intervals. The orthographic projections of the filter portions 101 on the substrate 1 cover the orthographic projections of the light emitting units 7 on the substrate 1 .

[0128] The filtering color of the filter part 101 is the same as the luminous color of the corresponding light-emitting unit 7. Therefore, the filter part 101 can allow the light emitted by the corresponding light-emitting unit 7 to pass through, and filter the light of a different color from that emitted by the light-emitting unit 7. For example, the light emitted by the light-emitting unit 7 is red, and the filter part 101 corresponding to the light-emitting unit 7 can allow the red light to pass through, and filter the light other than red, thereby improving the light output efficiency of the light-emitting unit 7.

[0129] The packaging unit 91 can independently package the corresponding light-emitting unit 7, thereby improving the display characteristics of the display panel. The filter part 101 is arranged on the side of the first packaging layer 9 away from the substrate 1, which can reduce the distance between the filter part 101 and the light-emitting unit 7, thereby further improving the light extraction efficiency of the light-emitting unit 7.

[0130] Based on the above design, this embodiment sets a filter layer 10 on the side of the first packaging layer 9 away from the substrate 1. Compared with the method of setting a polarizer on the side of the packaging layer away from the substrate 1 in the related art, the light output efficiency of the corresponding light-emitting unit 7 can be greatly improved, thereby greatly improving the display effect of the display panel.

[0131] For some possible implementations, see again Figure 1 The light-emitting unit 7 includes a first electrode 4, a light-emitting portion 5, and a second electrode 6 which are sequentially stacked in a direction away from the substrate 1. The display panel also includes a pixel defining layer 2 located on a side of the first electrode 4 away from the substrate 1. The isolation structure 3 is located on a side of the pixel defining layer 2 away from the substrate 1. The pixel defining layer 2 includes a pixel opening 21 exposing at least a portion of the first electrode 4. The orthographic projection of the pixel opening 21 on the substrate 1 is located within the orthographic projection of the isolation opening 8 on the substrate 1.

[0132] The setting of the isolation structure 3 enables the display panel to form film layers of light-emitting units 7 of different colors in different isolation openings 8 without the need for a fine metal mask. Specifically, when forming a light-emitting functional layer, the light-emitting functional layer will be separated by the isolation structure 3 to form a plurality of light-emitting portions 5 arranged at intervals, and when forming a second electrode layer, the second electrode layer will be separated by the isolation structure 3 to form a plurality of second electrodes 6 arranged at intervals, the isolation structure 3 includes a conductive material, the second electrode 6 is electrically connected to the isolation structure 3, and a first electrode 4, a light-emitting portion 5 and a second electrode 6 form a light-emitting unit 7. Among them, the first electrode 4 can be an anode, and the second electrode 6 can be a cathode.

[0133] In this way, different light-emitting units 7 can be made independent of each other, thereby improving the crosstalk between adjacent light-emitting units 7 and improving the display effect of the display panel. At the same time, due to the presence of the isolation structure 3, the light-emitting functional layer and the second electrode layer in the light-emitting unit 7 of each color in the display panel can be first prepared on the entire surface and then patterned, thereby eliminating the need for a fine metal mask, thereby saving the manufacturing cost of the display panel.

[0134] For some possible implementations, see Figure 2 The light-emitting unit 7 includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit. The light-emitting wavelength of the first light-emitting unit is smaller than that of the second light-emitting unit; the light-emitting wavelength of the second light-emitting unit is smaller than that of the third light-emitting unit. Specifically, the light-emitting color of the first light-emitting unit includes blue, the light-emitting color of the second light-emitting unit includes green, and the light-emitting color of the third light-emitting unit includes red.

[0135] Optionally, an orthographic projection of the packaging groove 911 on the substrate 1 at least partially overlaps with an orthographic projection of the isolation structure 3 on the substrate 1 .

[0136] In some embodiments, please refer again to Figure 2 The packaging groove 911 of the packaging unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first sealing structure 912, that is, the packaging material located at the lower edge of the protruding part of the isolation structure 3 and the packaging material located above the edge of the pixel definition layer 2 are interconnected to form the first sealing structure 912, and the first sealing structure 912 also includes an air gap formed by connecting the surfaces of the packaging units to each other.

[0137] Alternatively, see Figure 3 The packaging unit 91 located at the side of the first light-emitting unit away from the substrate 1 includes a first packaging sub-portion 913, and the first packaging sub-portion 913 fills the packaging groove 911 located at the side of the first light-emitting unit away from the substrate 1. The surface of the packaging unit 91 is continuously arranged, and there is no structure with a height drop on the surface of the packaging unit above the pixel definition layer 2.

[0138] Optionally, an orthographic projection of the first package sub-portion 913 on the substrate 1 at least partially overlaps with an orthographic projection of the isolation structure 3 on the substrate 1 .

[0139] Please see again Figure 2 and Figure 3 The packaging groove 911 of the packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a first opening structure 918, and the packaging groove 911 of the packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a second opening structure 919.

[0140] In this embodiment, the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1 can seal the side of the corresponding packaging groove 911 away from the substrate 1, so that the packaging groove 911 on the first packaging unit 91 on the side of the first light-emitting unit away from the substrate 1 forms a first sealing structure 912; or, the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1 can fill the corresponding packaging groove 911. In this way, in the subsequent preparation process of the display panel, it is not easy for photoresist and other residues that affect the light emission of the first light-emitting unit to remain in the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1, and it is not easy for etching liquid and the like to invade the first light-emitting unit from the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1, so that it is not easy to damage the first light-emitting unit, and finally the light extraction efficiency and display effect of the first light-emitting unit can be improved.

[0141] In other embodiments, please refer to Figure 4, the packaging groove 911 of the packaging unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first sealing structure 912, the packaging groove 911 of the packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second sealing structure 914, and the packaging groove 911 of the packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a second opening structure 919.

[0142] See also Figure 5 The encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first encapsulation sub-portion 913, which fills the encapsulation groove 911; the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second encapsulation sub-portion 915, which fills the encapsulation groove 911 located on the side of the second light-emitting unit away from the substrate 1; the encapsulation groove 911 of the encapsulation unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a second opening structure 919.

[0143] Optionally, an orthographic projection of the second package sub-portion 915 on the substrate 1 at least partially overlaps with an orthographic projection of the isolation structure 3 on the substrate 1 .

[0144] In this embodiment, the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1 can seal the side of the corresponding packaging groove 911 away from the substrate 1, so that the packaging groove 911 on the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1 forms a first sealing structure 912, and the packaging groove 911 on the packaging unit 91 on the side of the second light-emitting unit away from the substrate 1 forms a second sealing structure 914; or, the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1 can fill the corresponding packaging groove 911. In this way, in the subsequent preparation process of the display panel, it is not easy for photoresist and other residues that affect the light emission of the first light-emitting unit and the second light-emitting unit to remain in the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1, and the etching liquid and the like are not easy to invade the first light-emitting unit and the second light-emitting unit from the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1, so that it is not easy to damage the first light-emitting unit and the second light-emitting unit, and finally the light extraction efficiency and display effect of the first light-emitting unit and the second light-emitting unit can be improved.

[0145] In some other embodiments, see Figure 6 The packaging groove 911 of the packaging unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first sealing structure 912, the packaging groove 911 of the packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second sealing structure 914, and the packaging groove 911 of the packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a third sealing structure 916.

[0146] See also Figure 7 The encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first encapsulation sub-portion 913, which fills the encapsulation groove 911; the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second encapsulation sub-portion 915, which fills the encapsulation groove 911; the encapsulation unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a third encapsulation sub-portion 917, which fills the encapsulation groove 911 located on the third light-emitting unit away from the substrate 1.

[0147] Optionally, an orthographic projection of the third package sub-portion 917 on the substrate 1 at least partially overlaps with an orthographic projection of the isolation structure 3 on the substrate 1 .

[0148] In this embodiment, the packaging units 91 on the side of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit away from the substrate 1 can seal the side of the corresponding packaging grooves 911 away from the substrate 1, so that the packaging grooves 911 on the packaging units 91 on the side of the first light-emitting unit away from the substrate 1 form a first sealing structure 912, the packaging grooves 911 on the packaging units 91 on the side of the second light-emitting unit away from the substrate 1 form a second sealing structure 914, and the packaging grooves 911 on the packaging units 91 on the side of the third light-emitting unit away from the substrate 1 form a third sealing structure 916; or, the packaging units 91 on the side of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit away from the substrate 1 can fill the corresponding packaging grooves 911. In this way, in the subsequent preparation process of the display panel, it is not easy for photoresist and other residues that affect the luminescence of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit to remain in the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit away from the substrate 1, and the etching liquid and the like are not easy to invade the first light-emitting unit, the second light-emitting unit and the third light-emitting unit from the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit away from the substrate 1, so that the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are not easily damaged, and ultimately the light extraction efficiency and display effect of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit can be improved.

[0149] For some possible implementations, see Figure 8 The display panel also includes a second encapsulation layer 11 located on a side of the first encapsulation layer 9 away from the substrate 1, the filter portion 101 includes a first filter portion 1011 located on a side of the first light-emitting unit away from the substrate 1, a second filter portion 1012 located on a side of the second light-emitting unit away from the substrate 1, and a third filter portion 1013 located on a side of the third light-emitting unit away from the substrate 1, the side of the first filter portion 1011 away from the substrate 1 has a first distance to the surface of the substrate 1, the side of the second filter portion 1012 away from the substrate 1 has a second distance to the surface of the substrate 1, the side of the third filter portion 1013 away from the substrate 1 has a third distance to the surface of the substrate 1, and the first distance is equal to the second distance and equal to the third distance.

[0150] Among them, the first distance, the second distance and the third distance are the maximum distances from the side of the filter portion 101 away from the substrate 1 to the substrate 1, or are the average distances from each point on the side of the filter portion 101 away from the substrate 1 to the substrate 1, or are the distances between the filter portion 101 and the substrate 1 along a direction perpendicular to the substrate 1 passing through the center of the light-emitting unit 7.

[0151] In some embodiments, please refer again to Figure 8The encapsulation unit 9 includes a first encapsulation portion 901 located in the isolation opening 8, a second encapsulation portion 902 covering a side wall of the isolation structure 3 facing the isolation opening 8, and a third encapsulation portion 903 located on a side of the isolation structure 3 away from the substrate 1. In a direction perpendicular to the substrate 1, a thickness H1 of the first encapsulation portion 901 located on a side of the first light-emitting unit away from the substrate 1 is greater than a thickness H2 of the first encapsulation portion 901 located on a side of the second light-emitting unit away from the substrate 1; a thickness H2 of the first encapsulation portion 901 located on a side of the second light-emitting unit away from the substrate 1 is greater than a thickness H3 of the first encapsulation portion 901 located on a side of the third light-emitting unit away from the substrate 1.

[0152] Optionally, the orthographic projection of the first encapsulation portion 901 on the substrate 1 covers the orthographic projection of the light emitting unit 7 on the substrate 1 .

[0153] The thickness D1 of the filter portion 101 located at the side of the first light-emitting unit away from the substrate 1 is smaller than the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1; the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1 is smaller than the thickness D3 of the filter portion 101 located at the side of the third light-emitting unit away from the substrate 1.

[0154] The thickness of the first packaging part 901 is the thickness of the first packaging part 901 along a direction perpendicular to the substrate 1 and passing through the center line of the light emitting unit located on the side of the first packaging part 901 close to the substrate 1 .

[0155] The thickness of the filter portion 101 is the thickness of the filter portion 101 along a direction perpendicular to the substrate 1 and passing through the center line of the light emitting unit located on the side of the filter portion 101 close to the substrate 1 .

[0156] The thicker the packaging unit 91 is, the easier it is to form a sealing structure at the packaging groove 911, or the easier it is to fill the packaging groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1.

[0157] In this embodiment, the above design can make the filter parts 101 corresponding to the first light-emitting unit, the second light-emitting unit and the third light-emitting unit be located in the same plane away from the side of the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and finally the surface of the second encapsulation layer 11 away from the side of the substrate 1 can be flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and being more conducive to improving the light extraction efficiency of the light-emitting unit 7.

[0158] In other embodiments, please refer again to Figure 3, along the direction perpendicular to the substrate 1, the thickness H1 of the first encapsulation portion 901 located on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the first encapsulation portion 901 located on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the first encapsulation portion 901 located on the side of the second light-emitting unit away from the substrate 1 is equal to the thickness H3 of the first encapsulation portion 901 located on the side of the third light-emitting unit away from the substrate 1.

[0159] The thickness D1 of the filter portion 101 located at the side of the first light-emitting unit away from the substrate 1 is less than the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1; the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1 is equal to the thickness D3 of the filter portion 101 located at the side of the third light-emitting unit away from the substrate 1.

[0160] In this embodiment, the above design can make the filter parts 101 corresponding to the first light-emitting unit, the second light-emitting unit and the third light-emitting unit be located in the same plane away from the side of the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and finally the surface of the second encapsulation layer 11 away from the side of the substrate 1 can be flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and being more conducive to improving the light extraction efficiency of the light-emitting unit 7.

[0161] In some possible embodiments, the distance from the side of the filter portion 101 corresponding to the first light-emitting unit away from the substrate 1 to the substrate 1 is greater than the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1; the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1 is greater than or equal to the distance from the side of the filter portion 101 corresponding to the third light-emitting unit away from the substrate 1 to the substrate 1.

[0162] Among them, the distance from the side of the filter part 101 away from the substrate 1 to the substrate 1 is the maximum distance from the side of the filter part 101 away from the substrate 1 to the substrate 1, or the average distance from each point on the side of the filter part 101 away from the substrate 1 to the substrate 1, or the distance between the filter part 101 and the substrate 1 along the direction perpendicular to the substrate 1 passing through the center of the light-emitting unit 7.

[0163] In some embodiments, see Fig. 9 , along the direction perpendicular to the substrate 1, the thickness H1 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1 is greater than the thickness H3 of the encapsulation unit 91 located on the side of the third light-emitting unit away from the substrate 1.

[0164] Along the direction perpendicular to the substrate 1, the thickness D1 of the filter portion 101 located at the side of the first light-emitting unit away from the substrate 1 is equal to the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1; the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1 is equal to the thickness D3 of the filter portion 101 located at the side of the third light-emitting unit away from the substrate 1.

[0165] The thicker the packaging unit 91 is, the easier it is to form a sealing structure at the packaging groove 911, or the easier it is to fill the packaging groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1.

[0166] Since the thickness H1 is greater than the thickness H2, the thickness H2 is greater than the thickness H3, and the thickness D1 is equal to the thickness D2 and equal to the thickness D3, therefore, the distance from the side of the filter portion 101 corresponding to the first light-emitting unit away from the substrate 1 to the substrate 1 is greater than the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1; the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1 is greater than the distance from the side of the filter portion 101 corresponding to the third light-emitting unit away from the substrate 1 to the substrate 1.

[0167] In other embodiments, see Fig.10 , along the direction perpendicular to the substrate 1, the thickness H1 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1 is equal to the thickness H3 of the encapsulation unit 91 located on the side of the third light-emitting unit away from the substrate 1.

[0168] Along the direction perpendicular to the substrate 1, the thickness D1 of the filter portion 101 located at the side of the first light-emitting unit away from the substrate 1 is equal to the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1; the thickness D2 of the filter portion 101 located at the side of the second light-emitting unit away from the substrate 1 is equal to the thickness D3 of the filter portion 101 located at the side of the third light-emitting unit away from the substrate 1.

[0169] Since the thickness H1 is greater than the thickness H2, the thickness H2 is equal to the thickness H3, and the thickness D1 is equal to the thickness D2 and equal to the thickness D3, therefore, the distance from the side of the filter portion 101 corresponding to the first light-emitting unit away from the substrate 1 to the substrate 1 is greater than the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1; the distance from the side of the filter portion 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1 is equal to the distance from the side of the filter portion 101 corresponding to the third light-emitting unit away from the substrate 1 to the substrate 1.

[0170] For some possible implementations, see Figure 11-13 The filter layer 10 further includes a plurality of light shielding portions 102 disposed at intervals, and the orthographic projection of the light shielding portion 102 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1 .

[0171] Optionally, along the arrangement direction of the isolation openings 8 , the filter portion 101 and the light shielding portion 102 are arranged at intervals.

[0172] Optionally, the orthographic projection of the filter portion 101 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1 .

[0173] Optionally, the orthographic projection of the light shielding portion 102 on the substrate 1 is located within the orthographic projection of the isolation structure 3 on the substrate 1 .

[0174] Optionally, the orthographic projection of the light shielding portion 102 on the substrate 1 partially overlaps with the orthographic projection of the adjacent filter portion 101 on the substrate 1 , and a side surface of the light shielding portion 102 close to the substrate 1 at least partially contacts the isolation structure 3 .

[0175] The material of the shading portion 102 may include vinyl, and the light emitted by the light-emitting unit 7 generally cannot pass through the shading portion 102. In the present embodiment, the shading portion 102 is arranged on the side of the isolation structure 3 away from the substrate 1, so that the distance between the shading portion 102 and the light-emitting unit 7 can be reduced. Therefore, the shading portion 102 can reduce the light of the light-emitting unit 7 with a wide viewing angle being blocked by the light-emitting unit 7, thereby increasing the amount of light emitted by the light-emitting unit 7 in the direction with a wide viewing angle.

[0176] The light shielding portion 102 can absorb the light irradiated from the outside and reduce the reflectivity of the outside light, thereby improving the light emitting effect of the light emitting unit 7 and ultimately further improving the display quality of the display panel.

[0177] For some possible implementations, see again Figure 1 The packaging unit 91 is arranged at intervals on the side of the isolation structure 3 away from the substrate 1, and there is a gap between the packaging unit 91 located on the side of the isolation structure 3 away from the substrate 1 and the side of the isolation structure 3 away from the substrate 1. The orthographic projection of the packaging unit 91 on the substrate 1 covers the orthographic projection of the isolation opening 8 on the substrate 1 and covers part of the orthographic projection of the isolation structure 3 on the substrate 1.

[0178] During the patterning process of the light-emitting unit 7 , the first encapsulation layer 9 is disconnected at the isolation structure 3 to form an encapsulation unit 91 . The encapsulation unit 91 can completely and independently encapsulate the corresponding light-emitting unit 7 , thereby improving the display characteristics of the display panel.

[0179] Preferably, the filter portion 101 fills at least a portion of the gap; in this way, the stability of the filter portion 101 can be improved.

[0180] For some possible implementations, see Fig.14 The display panel further includes a third encapsulation layer 13 located on a side of the second encapsulation layer 11 away from the substrate 1 . The materials of the first encapsulation layer 9 and the third encapsulation layer 13 both include inorganic materials, and the material of the second encapsulation layer 11 includes organic materials.

[0181] For example, the first encapsulation layer 9 and the third encapsulation layer 13 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 11 can be formed by inkjet printing (IJP). The second encapsulation layer 11 and the third encapsulation layer 13 can provide a better encapsulation effect on the light-emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0182] For some possible implementations, see again Fig.13 The isolation structure 3 includes a first isolation portion 31 and a second isolation portion 32 which are stacked in sequence in a direction away from the substrate 1 , and 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 .

[0183] Since the second isolation portion 32 is located on the side of the first isolation portion 31 away from the substrate 1, and the lateral width of the second isolation portion 32 is greater than the lateral width of the first isolation portion 31 in a plane parallel to the substrate 1, the second isolation portion 32 disconnects the light-emitting functional layer and the second electrode layer at the isolation structure 3. In this way, the isolation structure 3 formed by the first isolation portion 31 and the second isolation portion 32 can make it easier to independently package each light-emitting unit 7, thereby improving the packaging yield of the display panel.

[0184] Preferably, see again Fig.13 , the second electrode 6 of the light-emitting unit 7 is electrically connected to the first isolation portion 31; the first isolation portion 31 includes a conductive material, and the second electrode 6 corresponding to the light-emitting unit 7 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 7 and the first isolation portion 31.

[0185] Please see again Fig.14 The isolation structure 3 further includes a third isolation portion 33 located on a side of the first isolation portion 31 facing the substrate 1 , and the second electrode 6 of the light emitting unit 7 is electrically connected to the third isolation portion 33 .

[0186] The third isolation portion 33 includes a conductive material, and the second electrode 6 corresponding to the light emitting unit 7 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 7 and the third isolation portion 33 .

[0187] Specifically, the material of the third isolation portion 33 includes molybdenum metal; and / or, the material of the first isolation portion 31 includes aluminum metal; and / or, the material of the second isolation portion 32 includes titanium metal. In this way, when the isolation structure 3 separates the second electrode 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.

[0188] The orthographic projection of the light emitting portion 5 on the substrate 1 is outside the orthographic projection of the third isolation portion 33 and / or the first isolation portion 31 on the substrate 1. In this way, the light emitting portion 5 does not overlap the isolation structure 3, thereby effectively improving the crosstalk problem between the light emitting units 7.

[0189] In some possible implementations, the present application further provides a display panel, which includes a substrate 1 , an isolation structure 3 , a light-emitting unit 7 and a filter layer 10 .

[0190] The isolation structure 3 is located at one side of the substrate 1 , and the isolation structure 3 encloses an isolation opening 8 ; at least part of the light emitting unit 7 is located in the isolation opening 8 , and the light emitting unit 7 includes a first light emitting unit and a second light emitting unit.

[0191] The filter layer 10 is located on a side of the light emitting unit 7 away from the substrate 1 . The filter layer 10 includes a plurality of filter portions 101 arranged at intervals. The orthographic projections of the filter portions 101 on the substrate 1 cover the orthographic projections of the light emitting unit 7 on the substrate 1 .

[0192] The distance from the side of the filter part 101 corresponding to the first light emitting unit away from the substrate 1 to the substrate 1 is equal to the distance from the side of the filter part 101 corresponding to the second light emitting unit away from the substrate 1 to the substrate 1 .

[0193] Please see again Figure 8 , along the direction perpendicular to the substrate 1, the thickness H1 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1, and the thickness D1 of the filter portion 101 located on the side of the first light-emitting unit away from the substrate 1 is less than the thickness D2 of the filter portion 101 located on the side of the second light-emitting unit away from the substrate 1.

[0194] The thicker the packaging unit 91 is, the easier it is to form a sealing structure at the packaging groove 911, or the easier it is to fill the packaging groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1.

[0195] In this embodiment, the display panel also includes a second encapsulation layer 11 located on the side of the first encapsulation layer 9 away from the substrate 1. Through the above design, the filter part 101 corresponding to the first light-emitting unit and the second light-emitting unit can be located in the same plane away from the side of the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and finally the surface of the second encapsulation layer 11 away from the substrate 1 can be flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and being more conducive to improving the light extraction efficiency of the light-emitting unit 7.

[0196] In some embodiments, see Figure 4b A first filter portion 10111 having the same color as the first filter portion 1011 is disposed in the second opening structure 919 , and the first filter portion 10111 at least partially covers the side wall of the second opening structure 919 facing the isolation structure 3 .

[0197] Optionally, the orthographic projection of the second opening structure 919 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1 .

[0198] Optionally, the orthographic projection of the first filter portion 10111 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1 .

[0199] In this embodiment, the first filter section 1011 is manufactured before the third filter section 1013. When the first filter section 1011 is manufactured, a first filter section 10111 remaining from the first filter section 1011 may be present on the side wall of the second opening structure 919 facing the isolation structure 3. In this way, the first filter section 10111 and the third filter section 1013 are both located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0200] In other embodiments, see Figure 4c A second filter sub-portion 10121 having the same color as the second filter portion 1012 is disposed in the second opening structure 919 , and the second filter sub-portion 10121 at least partially covers the side wall of the second opening structure 919 facing the isolation structure 3 .

[0201] Optionally, an orthographic projection of the second filter portion on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate.

[0202] In this embodiment, the second filter section 1012 is manufactured before the third filter section 1013. When manufacturing the second filter section 1012, a second filter section 10121 having residues of the second filter section 1012 may be provided on the side wall of the second opening structure 919 facing the isolation structure 3. In this way, the second filter section 10121 and the third filter section 1013 are both located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0203] In some other embodiments, see Figure 4c The second opening structure 919 is provided with a first filter section 10111 having the same color as the first filter section 1011 and a second filter section 10121 having the same color as the second filter section 1012. The first filter section 10111 and the second filter section 10121 are sequentially arranged along the opening direction of the second opening structure 919.

[0204] Optionally, the orthographic projections of the first filter section 10111 and the second filter section 10121 on the substrate 1 at least partially overlap with the orthographic projection of the isolation structure 3 on the substrate 1 .

[0205] In this embodiment, the first filter section 1011 and the second filter section 1012 are manufactured before the third filter section 1013. When the first filter section 1011 and the second filter section 1012 are manufactured, the side wall of the second opening structure 919 facing the isolation structure 3 may have the first filter section 10111 and the second filter section 1012 respectively remaining. In this way, the first filter section 10111, the second filter section 10121 and the third filter section 1013 are all located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0206] In some possible implementations, the present application further provides a display panel, which includes a substrate 1 , an isolation structure 3 , a light-emitting unit 7 and a filter layer 10 .

[0207] The isolation structure 3 is located at one side of the substrate 1 , and the isolation structure 3 encloses an isolation opening 8 ; at least part of the light emitting unit 7 is located in the isolation opening 8 , and the light emitting unit 7 includes a first light emitting unit and a second light emitting unit.

[0208] The filter layer 10 is located on a side of the light emitting unit 7 away from the substrate 1 . The filter layer 10 includes a plurality of filter portions 101 arranged at intervals. The orthographic projections of the filter portions 101 on the substrate 1 cover the orthographic projections of the light emitting unit 7 on the substrate 1 .

[0209] The distance between the side of the filter part 101 corresponding to the first light emitting unit and the substrate 1 which is away from the substrate 1 is greater than the distance between the side of the filter part 101 corresponding to the second light emitting unit and the substrate 1 which is away from the substrate 1 .

[0210] Please see again Fig. 9 , along the direction perpendicular to the substrate 1, the thickness H1 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the encapsulation unit 91 located on the side of the second light-emitting unit away from the substrate 1, and the thickness D1 of the filter portion 101 located on the side of the first light-emitting unit away from the substrate 1 is equal to the thickness D2 of the filter portion 101 located on the side of the second light-emitting unit away from the substrate 1.

[0211] The thicker the packaging unit 91 is, the easier it is to form a sealing structure at the packaging groove 911, or the easier it is to fill the packaging groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the packaging groove 911 of the packaging unit 91 on the side of the first light-emitting unit away from the substrate 1.

[0212] Since the thickness H1 is greater than the thickness H2 and the thickness D1 is equal to the thickness D2, the distance from the side of the filter 101 corresponding to the first light-emitting unit away from the substrate 1 to the substrate 1 is greater than the distance from the side of the filter 101 corresponding to the second light-emitting unit away from the substrate 1 to the substrate 1.

[0213] For some possible implementations, see Fig.15 The present application also provides a method for preparing a display panel, the method comprising:

[0214] S10: providing a substrate 1.

[0215] S11 : forming an isolation structure 3 on one side of the substrate 1 , wherein the isolation structure 3 encloses an isolation opening 8 .

[0216] See also Fig.16 A first electrode layer is formed on one side of the substrate 1 , and the first electrode layer includes a plurality of first electrodes 4 arranged at intervals.

[0217] See also Fig.17 A pixel defining material layer 14 and an isolation material layer 15 are sequentially formed on a side of the first electrode layer away from the substrate 1 .

[0218] See also Fig.18 , the isolation material layer 15 and the pixel defining material layer 14 are etched in sequence to form an isolation structure 3 and a pixel defining layer 2 respectively, the pixel defining layer 2 includes a pixel opening 21 exposing at least a portion of the first electrode 4, the orthographic projection of the isolation structure 3 on the substrate 1 is located between the orthographic projections of two adjacent pixel openings 21 on the substrate 1; the orthographic projection of the pixel opening 21 on the substrate 1 is located within the orthographic projection of the isolation opening 8 on the substrate 1.

[0219] S12: forming at least part of the light emitting unit 7 in the isolation opening 8 and forming a first encapsulation layer 9 on a side of the light emitting unit 7 away from the substrate 1, wherein the first encapsulation layer 9 comprises a plurality of encapsulation units 91 arranged at intervals, and at least one encapsulation unit 91 comprises an encapsulation groove 911 on a side away from the substrate 1.

[0220] See also Fig.19 , the light emitting portion 5 and the second electrode 6 of the light emitting unit 7 are formed in the isolation opening 8 , and at the same time, a packaging unit 91 is formed on a side of the second electrode 6 away from the substrate 1 .

[0221] S13: forming a filter layer 10 on a side of the first encapsulation layer 9 away from the substrate 1 , the filter layer 10 comprising a plurality of filter portions 101 arranged at intervals, the orthographic projection of the filter portion 101 on the substrate 1 covering the orthographic projection of the light emitting unit 7 on the substrate 1 .

[0222] Please see again Figure 1 A filter layer 10 is formed on a side of the light-emitting unit 7 away from the substrate 1. The filtering color of the filter portion 101 of the filter layer 10 is the same as the luminous color of the corresponding light-emitting unit 7. Therefore, the filter portion 101 can allow the light emitted by the corresponding light-emitting unit 7 to pass through, and filter the light of a different color from that emitted by the light-emitting unit 7. For example, the light emitted by the light-emitting unit 7 is red, and the filter portion 101 corresponding to the light-emitting unit 7 can allow the red light to pass through, and filter the light other than red, thereby improving the light extraction efficiency of the light-emitting unit 7.

[0223] The packaging unit 91 can independently package the corresponding light-emitting unit 7, thereby improving the display characteristics of the display panel. By setting the filter part 101 on the side of the first packaging layer 9 away from the substrate 1 through the above method, the distance between the filter part 101 and the light-emitting unit 7 can be reduced, thereby further improving the light extraction efficiency of the light-emitting unit 7.

[0224] 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 light extraction efficiency of the electronic device is higher and the display quality is better.

[0225] The technical features of the above embodiments may be arbitrarily combined. 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.

[0226] The above-mentioned embodiments only express several implementation methods of the present invention, 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 ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached 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 an isolation opening; a light emitting unit, at least partly located in the isolation opening; A first encapsulation layer is located on a side of the light-emitting unit away from the substrate, the first encapsulation layer comprises a plurality of encapsulation units arranged at intervals, and a side of at least one of the encapsulation units away from the substrate comprises an encapsulation groove; The filter layer is located on a side of the first packaging layer away from the substrate, and the filter layer includes a plurality of filter parts arranged at intervals, and the orthographic projections of the filter parts on the substrate cover the orthographic projections of the light-emitting units on the substrate.

2. The display panel according to claim 1, characterized in that: The light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and the packaging groove of the packaging unit located on the side of the first light-emitting unit away from the substrate includes a first sealing structure, or the packaging unit located on the side of the first light-emitting unit away from the substrate includes a first packaging sub-portion, and the first packaging sub-portion fills the packaging groove located on the side of the first light-emitting unit away from the substrate; Preferably, the encapsulation groove of the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a first opening structure, or the encapsulation groove of the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a second sealing structure, or the encapsulation unit located on the side of the second light-emitting unit away from the substrate includes a second encapsulation sub-portion, and the second encapsulation sub-portion fills the encapsulation groove located on the side of the second light-emitting unit away from the substrate; Preferably, the light-emitting unit further comprises a third light-emitting unit, and the encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a second opening structure, or the encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a third sealing structure, or the encapsulation unit located on the side of the third light-emitting unit away from the substrate comprises a third encapsulation sub-portion, and the third encapsulation sub-portion fills the encapsulation groove located on the side of the third light-emitting unit away from the substrate; Preferably, the orthographic projection of the packaging groove on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the first packaging sub-portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the second packaging sub-portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, an orthographic projection of the third packaging sub-unit on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate; Preferably, the filter layer further comprises a plurality of light shielding portions arranged at intervals, and the orthographic projections of the light shielding portions on the substrate at least partially overlap with the orthographic projections of the isolation structures on the substrate; Preferably, along the arrangement direction of the isolation openings, the filter portion and the light shielding portion are arranged at intervals; Preferably, the color of the filter portion is the same as the color of light emitted by the light-emitting unit located on a side of the filter portion close to the substrate; Preferably, the orthographic projection of the filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the light shielding portion on the substrate is located within the orthographic projection range of the isolation structure on the substrate; Preferably, the light emission wavelength of the first light emitting unit is shorter than that of the second light emitting unit; and / or the light emission wavelength of the second light emitting unit is shorter than that of the third light emitting unit.

3. The display panel according to claim 1, characterized in that: The light-emitting unit includes a first light-emitting unit and a second light-emitting unit, the filter section includes a first filter section located at a side of the first light-emitting unit away from the substrate and a second filter section located at a side of the second light-emitting unit away from the substrate, a first distance exists between the side of the first filter section away from the substrate and the substrate surface, a second distance exists between the side of the second filter section away from the substrate and the substrate surface, and the first distance is equal to the second distance; Preferably, the light-emitting unit further includes a third light-emitting unit, and the filter section further includes a third filter section located at a side of the third light-emitting unit away from the substrate, a side of the third filter section away from the substrate has a third distance to the substrate surface, and the second distance is equal to the third distance; Preferably, the first distance, the second distance and the third distance are the maximum distances from the side of the filter portion away from the substrate to the substrate, or are the average distances from each point on the side of the filter portion away from the substrate to the substrate, or are the distances between the filter portion and the substrate along a direction perpendicular to the substrate passing through the center of the light-emitting unit.

4. The display panel according to claim 1, characterized in that: The packaging unit comprises a first packaging portion located in the isolation opening, a second packaging portion covering a side wall of the isolation structure facing the isolation opening, and a third packaging portion located on a side of the isolation structure away from the substrate; The light-emitting unit comprises a first light-emitting unit and a second light-emitting unit, and along a direction perpendicular to the substrate, a thickness of a first encapsulation portion located at a side of the first light-emitting unit away from the substrate is greater than a thickness of a first encapsulation portion located at a side of the second light-emitting unit away from the substrate; Preferably, the thickness of the second encapsulation portion is the thickness of the second encapsulation portion along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the second encapsulation portion close to the substrate; Preferably, the filter section comprises a first filter section located at a side of the first light emitting unit away from the substrate and a second filter section located at a side of the second light emitting unit away from the substrate, and along a direction perpendicular to the substrate, a thickness of the first filter section located at a side of the first light emitting unit away from the substrate is smaller than a thickness of the second filter section located at a side of the second light emitting unit away from the substrate; Preferably, the light-emitting unit further comprises a third light-emitting unit, and along a direction perpendicular to the substrate, a thickness of the first packaging portion located on a side of the second light-emitting unit away from the substrate is greater than or equal to a thickness of the first packaging portion located on a side of the third light-emitting unit away from the substrate; Preferably, the filter section further comprises a third filter section located on a side of the third light emitting unit away from the substrate, and along a direction perpendicular to the substrate, a thickness of the second filter section located on a side of the second light emitting unit away from the substrate is less than or equal to a thickness of the third filter section located on a side of the third light emitting unit away from the substrate; Preferably, the orthographic projection of the first packaging portion on the substrate covers the orthographic projection of the light-emitting unit on the substrate; Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter portion close to the substrate.

5. The display panel according to claim 3, characterized in that: The display panel further comprises a second encapsulation layer located on a side of the filter layer away from the substrate, and a surface of the second encapsulation layer on a side away from the substrate is flat; 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 materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials; Preferably, the material of the second encapsulation layer includes organic material.

6. The display panel according to claim 1, characterized in that: The light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and the distance from the side of the filter corresponding to the first light-emitting unit away from the substrate to the substrate is greater than the distance from the side of the filter corresponding to the second light-emitting unit away from the substrate to the substrate; Preferably, the light-emitting unit further comprises a third light-emitting unit, and the distance from the side of the filter corresponding to the second light-emitting unit away from the substrate to the substrate is greater than or equal to the distance from the side of the filter corresponding to the third light-emitting unit away from the substrate to the substrate; Preferably, the distance from the side of the filter portion away from the substrate to the substrate is the maximum distance from the side of the filter portion away from the substrate to the substrate, or the average distance from each point on the side of the filter portion away from the substrate to the substrate, or the distance between the filter portion and the substrate along a direction perpendicular to the substrate passing through the center of the light-emitting unit.

7. The display panel according to claim 6, characterized in that: Along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate is greater than or equal to a thickness of the encapsulation unit located on a side of the third light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the second light emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the second light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the third light emitting unit away from the substrate.

8. The display panel according to any one of claims 1 to 7, characterized in that: The packaging unit is arranged at intervals on a side of the isolation structure away from the substrate; Preferably, there is a gap between the packaging unit located on a side of the isolation structure away from the substrate and a side of the isolation structure away from the substrate; Preferably, the filter portion fills at least a portion of the gap; Preferably, the orthographic projection of the packaging unit on the substrate covers the orthographic projection of the isolation opening on the substrate and covers part of the orthographic projection of the isolation structure on the substrate; 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 display panel further comprises a pixel defining layer located on a side of the first electrode away from the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate; the pixel defining layer comprises a pixel opening exposing at least a portion of the first electrode; Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

9. The display panel according to any one of claims 1 to 7, 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 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 third isolation portion; Preferably, the material of the third isolation portion includes molybdenum metal; and / or the material of the first isolation portion includes aluminum metal; and / or the material of the second isolation portion includes titanium metal.

10. The display panel according to claim 3, characterized in that: The packaging groove of the packaging unit located at a side of the third light-emitting unit away from the substrate comprises a second opening structure, a first filter portion having the same color as the first filter portion is arranged in the second opening structure, and the first filter portion at least partially covers a side wall of the second opening structure facing the isolation structure; Preferably, the orthographic projection of the second opening structure on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the first filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, a second filter sub-section having the same color as the second filter sub-section is disposed in the second opening structure, and the second filter sub-section at least partially covers a side wall of the second opening structure facing the isolation structure; Preferably, the orthographic projection of the second filter portion on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, a first filter sub-section having the same color as the first filter sub-section and a second filter sub-section having the same color as the second filter sub-section are arranged in the second opening structure, and the first filter sub-section and the second filter sub-section are arranged in sequence along the opening direction of the second opening structure; Preferably, the orthographic projections of the first filter section and the second filter section on the substrate at least partially overlap with the orthographic projection of the isolation structure on the substrate.

11. 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 an isolation opening; A light-emitting unit, at least partially located in the isolation opening, the light-emitting unit comprising a first light-emitting unit and a second light-emitting unit; A filter layer is located on a side of the light emitting unit away from the substrate, the filter layer comprises a plurality of filter parts arranged at intervals, and the orthographic projection of the filter part on the substrate covers the orthographic projection of the light emitting unit on the substrate; Wherein, the distance from the side of the filter portion corresponding to the first light-emitting unit away from the substrate to the substrate is equal to the distance from the side of the filter portion corresponding to the second light-emitting unit away from the substrate to the substrate.

12. The display panel according to claim 11, characterized in that: Along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is smaller than a thickness of the filter portion located on a side of the second light emitting unit away from the substrate; Preferably, the thickness of the packaging unit is the thickness of the packaging unit along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the packaging unit close to the substrate; Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter portion close to the substrate.

13. 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 an isolation opening; A light-emitting unit, at least partially located in the isolation opening, the light-emitting unit comprising a first light-emitting unit and a second light-emitting unit; A filter layer is located on a side of the light emitting unit away from the substrate, the filter layer comprises a plurality of filter parts arranged at intervals, and the orthographic projection of the filter part on the substrate covers the orthographic projection of the light emitting unit on the substrate; Wherein, the distance from the side of the filter portion corresponding to the first light-emitting unit away from the substrate to the substrate is greater than the distance from the side of the filter portion corresponding to the second light-emitting unit away from the substrate to the substrate.

14. The display panel according to claim 13, characterized in that: Along a direction perpendicular to the substrate, a thickness of the encapsulation unit located on a side of the first light-emitting unit away from the substrate is greater than a thickness of the encapsulation unit located on a side of the second light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, a thickness of the filter portion located on a side of the first light emitting unit away from the substrate is equal to a thickness of the filter portion located on a side of the second light emitting unit away from the substrate; Preferably, the thickness of the packaging unit is the thickness of the packaging unit along a direction perpendicular to the substrate and passing through the center line of the light-emitting unit located on a side of the packaging unit close to the substrate; Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter portion close to the substrate.

15. A method for preparing a display panel, characterized in that: The method comprises: providing a substrate; An isolation structure is formed on one side of the substrate, wherein the isolation structure encloses an isolation opening; forming at least part of the light emitting unit in the isolation opening and forming a first encapsulation layer on a side of the light emitting unit away from the substrate, wherein the first encapsulation layer comprises a plurality of encapsulation units arranged at intervals, and a side of at least one of the encapsulation units away from the substrate comprises an encapsulation groove; A filter layer is formed on a side of the first packaging layer away from the substrate, the filter layer comprising a plurality of filter parts arranged at intervals, and the orthographic projections of the filter parts on the substrate cover the orthographic projections of the light-emitting units on the substrate.

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

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