Display panel, preparation method of display panel and electronic device

Abstract

The display panel, the preparation method of the display panel and the electronic equipment provided by the embodiments of the present application relate to the technical field of display, and the display panel comprises a substrate, an isolation structure, a first encapsulation layer and a filter layer. The isolation structure forms an isolation opening. The first encapsulation layer comprises a plurality of encapsulation units arranged at intervals. At least one encapsulation unit comprises an encapsulation groove on the side away from the substrate. The filter layer comprises a plurality of filter portions arranged at intervals. The orthographic projection of the filter portion on the substrate covers the orthographic projection of the light-emitting unit on the substrate. By arranging the filter layer on the side of the first encapsulation layer away from the substrate, the light-emitting efficiency of the corresponding light-emitting unit can be greatly improved, and thus the display effect of the display panel can be greatly improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display panels.

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

[0004] To overcome the technical problems mentioned in the background, this application provides a display panel, which includes: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; The light-emitting unit is at least partially located within the isolation opening; A first encapsulation layer is located on the side of the light-emitting unit away from the substrate. The first encapsulation layer includes a plurality of encapsulation units spaced apart, and at least one of the encapsulation units includes an encapsulation groove on the side away from the substrate. A filter layer is located on the side of the first encapsulation layer away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthogonal projection of the filter portions on the substrate covers the orthogonal projection of the light-emitting unit on the substrate.

[0005] 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 the side of the first light-emitting unit away from the substrate includes a first sealing structure; or, the encapsulation unit located on the side of the first light-emitting unit away from the substrate includes a first encapsulation sub-part, and the first encapsulation sub-part fills the encapsulation 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-part, the second encapsulation sub-part filling the encapsulation groove located on the side of the second light-emitting unit away from the substrate. Preferably, the light-emitting unit further includes 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 includes 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 includes a third sealing structure, or the encapsulation unit located on the side of the third light-emitting unit away from the substrate includes a third encapsulation sub-part, and the third encapsulation sub-part fills the encapsulation groove located on the side of the third light-emitting unit away from the substrate. Preferably, the orthographic projection of the encapsulation groove on the substrate and the orthographic projection of the isolation structure on the substrate at least partially overlap; Preferably, the orthographic projection of the first encapsulation sub-part 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 encapsulation sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the third encapsulation sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the filter layer further includes a plurality of light-shielding portions spaced apart, wherein the orthographic projection of the light-shielding portions on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the light-filtering part and the light-shielding part are arranged at intervals along the arrangement direction of the isolation opening; Preferably, the color of the filter portion is the same as the light-emitting color of the light-emitting unit located on the side of the filter portion closer 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 emission wavelength of the first light-emitting unit is shorter than that of the second light-emitting unit; and / or, the emission wavelength of the second light-emitting unit is shorter than that of the third light-emitting unit.

[0006] In some possible implementations, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and the filter portion includes a first filter portion located on the side of the first light-emitting unit away from the substrate and a second filter portion located on the side of the second light-emitting unit away from the substrate. The side of the first filter portion away from the substrate has a first distance to the substrate surface, and the side of the second filter portion away from the substrate has a second distance to the substrate surface. The first distance and the second distance are equal. Preferably, the light-emitting unit further includes a third light-emitting unit, and the filter portion further includes a third filter portion located on the side of the third light-emitting unit away from the substrate, wherein the side of the third filter portion away from the substrate has a third distance from 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 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 passing through the center of the light-emitting unit along a direction perpendicular to the substrate.

[0007] In some possible implementations, the packaging unit includes a first packaging portion located within the isolation opening, a second packaging portion covering a sidewall of the isolation structure facing the isolation opening, and a third packaging portion located on the side of the isolation structure facing away from the substrate; Along a direction perpendicular to the substrate, the thickness of the first encapsulation portion located on the side of the first light-emitting unit away from the substrate is greater than the thickness of the first encapsulation portion located on the 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, passing through the center line of the light-emitting unit located on the side of the second encapsulation portion closer to the substrate; Preferably, the filter portion includes a first filter portion located on the side of the first light-emitting unit away from the substrate and a second filter portion located on the side of the second light-emitting unit away from the substrate. Along the direction perpendicular to the substrate, the thickness of the filter portion located on the side of the first light-emitting unit away from the substrate is less than the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate. Preferably, along a direction perpendicular to the substrate, the thickness of the first encapsulation portion located on the side of the second light-emitting unit away from the substrate is greater than or equal to the thickness of the first encapsulation portion located on the side of the third light-emitting unit away from the substrate; Preferably, the filter portion includes a third filter portion located on the side of the third light-emitting unit away from the substrate, and the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate is less than or equal to the thickness of the filter portion located on the side of the third light-emitting unit away from the substrate in a direction perpendicular to the substrate. Preferably, the orthographic projection of the first encapsulation portion on the substrate covers the orthographic projection of the light-emitting unit on the substrate.

[0008] In some possible implementations, the display panel further includes a second encapsulation layer located on the side of the filter layer away from the substrate, the surface of the second encapsulation layer on the side away from the substrate being flat; Preferably, the display panel further includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate; Preferably, the materials of both the first encapsulation layer and the third encapsulation layer include inorganic materials; Preferably, the material of the second encapsulation layer includes an organic material.

[0009] In some possible implementations, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit, 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. 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; 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 passing through the center of the light-emitting unit along a direction perpendicular to the substrate.

[0010] In some possible implementations, along a direction perpendicular to the substrate, the thickness of the encapsulation unit located on the side of the first light-emitting unit away from the substrate is greater than the thickness of the encapsulation unit located on the side of the second light-emitting unit away from the substrate. Preferably, along a direction perpendicular to the substrate, the thickness of the encapsulation unit located on the side of the second light-emitting unit away from the substrate is greater than or equal to the thickness of the encapsulation unit located on the side of the third light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, the thickness of the filter portion located on the side of the first light-emitting unit away from the substrate is equal to the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate; Preferably, along a direction perpendicular to the substrate, the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate is equal to the thickness of the filter portion located on the side of the third light-emitting unit away from the substrate.

[0011] In some possible implementations, the packaging units are spaced apart on the side of the isolation structure away from the substrate; Preferably, there is a gap between the packaging unit located on the side of the isolation structure away from the substrate and the 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 the orthographic projection of a portion of the isolation structure on the substrate; Preferably, the light-emitting unit includes a first electrode, a light-emitting portion, and a second electrode sequentially stacked along a direction away from the substrate; Preferably, the display panel further includes a pixel defining layer located on the side of the first electrode away from the substrate, and the isolation structure is located on the side of the pixel defining layer away from the substrate; the pixel defining layer includes pixel openings that expose 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.

[0012] In some possible implementations, the isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthographic projection of the 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 includes a third isolation portion located on the 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.

[0013] In some possible implementations, the encapsulation recess of the encapsulation unit located on the side of the third light-emitting unit away from the substrate includes a second opening structure. A first filter sub-part of the same color as the first filter sub-part is disposed in the second opening structure. The first filter sub-part at least partially covers the sidewall of the second opening structure facing the isolation structure. Preferably, the orthographic projection of the second opening structure on the substrate and the orthographic projection of the isolation structure on the substrate at least partially overlap; Preferably, the orthographic projection of the first filter sub-part on the substrate and the orthographic projection of the isolation structure on the substrate at least partially overlap; Preferably, a second filter sub-part of the same color as the second filter part is provided in the second opening structure, and the second filter sub-part at least partially covers the sidewall of the second opening structure facing the isolation structure; Preferably, the orthographic projection of the second filter sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; Preferably, the second opening structure is provided with a first filter sub-part of the same color as the first filter part and a second filter sub-part of the same color as the second filter part, and the first filter sub-part and the second filter sub-part are arranged sequentially along the opening direction of the second opening structure; Preferably, the orthographic projections of the first and second filter portions on the substrate at least partially overlap with the orthographic projection of the isolation structure on the substrate.

[0014] In some possible implementations, this application also provides a display panel, the display panel comprising: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; A light-emitting unit, at least partially located within the isolation opening, includes a first light-emitting unit and a second light-emitting unit; A filter layer is located on the side of the light-emitting unit away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthographic projection of the filter portions 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.

[0015] In some possible implementations, along a direction perpendicular to the substrate, the thickness of the encapsulation unit located on the side of the first light-emitting unit away from the substrate is greater than the thickness of the encapsulation unit located on the side of the second light-emitting unit away from the substrate. Preferably, along a direction perpendicular to the substrate, the thickness of the filter portion located on the side of the first light-emitting unit away from the substrate is less than the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate; Preferably, the thickness of the encapsulation unit is the thickness of the encapsulation unit along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the encapsulation unit closer to the substrate; Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the filter portion closer to the substrate.

[0016] In some possible implementations, this application also provides a display panel, the display panel comprising: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; A light-emitting unit, at least partially located within the isolation opening, includes a first light-emitting unit and a second light-emitting unit; A filter layer is located on the side of the light-emitting unit away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthographic projection of the filter portions 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.

[0017] In some possible implementations, along a direction perpendicular to the substrate, the thickness of the encapsulation unit located on the side of the first light-emitting unit away from the substrate is greater than the thickness of the encapsulation unit located on the side of the second light-emitting unit away from the substrate. Preferably, along a direction perpendicular to the substrate, the thickness of the filter portion located on the side of the first light-emitting unit away from the substrate is equal to the thickness of the filter portion located on the side of the second light-emitting unit away from the substrate; Preferably, the thickness of the encapsulation unit is the thickness of the encapsulation unit along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the encapsulation unit closer to the substrate; Preferably, the thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the filter portion closer to the substrate.

[0018] In some possible implementations, this application also provides a method for manufacturing a display panel, the method comprising: Provide substrate; An isolation structure is formed on one side of the substrate, and the isolation structure encloses an isolation opening; At least a portion of the light-emitting units are formed within the isolation opening, and a first encapsulation layer is formed on the side of the light-emitting units away from the substrate. The first encapsulation layer includes a plurality of spaced-apart encapsulation units, and at least one of the encapsulation units includes an encapsulation groove on the side away from the substrate. A filter layer is formed on the side of the first encapsulation layer away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthogonal projection of the filter portions on the substrate covers the orthogonal projection of the light-emitting unit on the substrate.

[0019] In some possible implementations, this application also provides an electronic device, which includes the display panel described in this application, or a display panel prepared by the method for preparing the display panel described in this application.

[0020] Compared with the prior art, this application has the following beneficial effects: This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By providing a filter layer on the side of the first encapsulation layer away from the substrate, the light emission efficiency of the corresponding light-emitting unit can be greatly improved, thereby greatly improving the display effect of the display panel. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional schematic diagram of a display panel including a filter layer provided in an embodiment of this application; Figure 2 A cross-sectional schematic diagram of the encapsulation unit corresponding to the first light-emitting unit of the display panel provided in the embodiments of this application, including a first sealing structure, the encapsulation unit corresponding to the second light-emitting unit including a first opening structure, and the encapsulation unit corresponding to the third light-emitting unit including a second opening structure; Figure 3 A cross-sectional schematic diagram showing the first encapsulation sub-part of the first light-emitting unit of the display panel provided in this application, the first encapsulation sub-unit of the first light-emitting unit being filled with a corresponding encapsulation groove, the encapsulation unit of the second light-emitting unit including a first opening structure, and the encapsulation unit of the third light-emitting unit including a second opening structure; Figure 4a A cross-sectional schematic diagram of the encapsulation unit corresponding to the first light-emitting unit of the display panel provided in the embodiments of this application, including a first sealing structure, the encapsulation unit corresponding to the second light-emitting unit including a second sealing structure, and the encapsulation unit corresponding to the third light-emitting unit including a second opening structure; Figure 4b A cross-sectional schematic diagram of the first filter sub-part remaining in the first filter portion of the display panel provided in the embodiment of this application, located within the second opening structure; Figure 4c A cross-sectional schematic diagram of the second filter sub-part remaining in the second filter section of the display panel provided in the embodiment of this application, located within the second opening structure; Figure 4d A cross-sectional schematic diagram showing that the first filter portion and the second filter portion of the display panel provided in the embodiments of this application each have a first filter sub-part and a second filter sub-part remaining within the second opening structure; Figure 5A cross-sectional schematic diagram showing the first encapsulation sub-part of the first light-emitting unit of the display panel provided in this application, the second encapsulation sub-part of the second light-emitting unit, the encapsulation unit of the third light-emitting unit, and the encapsulation unit including the second opening structure. Figure 6 A cross-sectional schematic diagram of the encapsulation unit corresponding to the first light-emitting unit of the display panel provided in the embodiments of this application, including a first sealing structure, the encapsulation unit corresponding to the second light-emitting unit including a second sealing structure, and the encapsulation unit corresponding to the third light-emitting unit including a third sealing structure; Figure 7 A cross-sectional schematic diagram showing the first encapsulation sub-part of the first light-emitting unit of the display panel provided in this application being filled with a corresponding encapsulation groove, the second encapsulation sub-part of the second light-emitting unit being filled with a corresponding encapsulation groove, and the third encapsulation sub-part of the third light-emitting unit being filled with a corresponding encapsulation groove; Figure 8 A cross-sectional schematic diagram showing that the distance from the side of the filter portion of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit corresponding to the embodiment of this application to the substrate is equal. Figure 9 A cross-sectional schematic diagram showing that the distance from the filter portion of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit to the substrate decreases sequentially on the side away from the substrate, as provided in the embodiments of this application. Figure 10 A cross-sectional schematic diagram showing that the distance from the side of the filter portion corresponding to the first light-emitting unit and the second light-emitting unit away from the substrate decreases sequentially, and the distance from the side of the filter portion corresponding to the second light-emitting unit and the third light-emitting unit away from the substrate is equal. Figure 11 One of the cross-sectional schematic diagrams of the light-shielding portion provided in the embodiments of this application is shown. Figure 12 The filter layer provided in the embodiments of this application also includes a second cross-sectional schematic diagram of a light-shielding portion; Figure 13 The filter layer provided in the embodiments of this application also includes a cross-sectional schematic diagram of the light-shielding portion (Figure 3). Figure 14 The display panel provided in the embodiments of this application also includes a cross-sectional view of a third encapsulation layer; Figure 15 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application; Figure 16 A schematic cross-section showing a first electrode layer formed on one side of a substrate, as provided in an embodiment of this application; Figure 17A cross-sectional schematic diagram showing that a pixel defining material layer and an isolation material layer are sequentially formed on the side of the first electrode layer away from the substrate, as provided in an embodiment of this application; Figure 18 A cross-sectional schematic diagram of the separation material layer and the pixel defining material layer sequentially etched according to an embodiment of this application; Figure 19 This is a cross-sectional view of the light-emitting part, the second electrode, and the encapsulation unit formed within the isolation opening, as provided in an embodiment of this application.

[0023] Reference 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-part; 914. Second sealing... 915. Second encapsulation sub-section; 916. Third sealing structure; 917. Third encapsulation sub-section; 918. First opening structure; 919. Second opening structure; 10. Filter layer; 101. Filter section; 1011. First filter section; 10111. First filter sub-section; 1012. Second filter section; 10121. Second filter sub-section; 1013. Third filter section; 102. Light-shielding section; 11. Second encapsulation layer; 13. Third encapsulation layer; 14. Pixel defining material layer; 15. Isolation material layer. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0029] Increasing the density of light-emitting units (i.e., pixel density) in a display panel is a crucial way to improve display quality. However, current display panels manufactured using Fine Metal Mask (FMM) technology are limited by technological constraints that prevent further increases in light-emitting unit density. Through long-term research, the inventors discovered that to address this technical challenge, some display panels incorporate isolation structures. During the full-layer vapor deposition of the light-emitting functional layer and the second electrode, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Through multiple vapor deposition and etching processes (i.e., light-emitting unit patterning), light-emitting units of different colors can be formed within different isolation openings.

[0030] Among them, patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN20241099419 and PCT / CN20241099072 describe relevant technical solutions for isolation structures and encapsulation layers, the contents of which are incorporated herein by reference.

[0031] The display panel in the related technology includes a substrate, a light-emitting unit located on one side of the substrate, an encapsulation layer located on the side of the light-emitting unit away from the substrate, and a polarizer located on the side of the encapsulation layer away from the substrate. The polarizer can reduce the reflectivity of the display panel, but it greatly reduces the light extraction efficiency of the light-emitting unit, thereby reducing the display effect of the display panel.

[0032] To address the aforementioned technical problems, the inventors have innovatively designed the following technical solutions, which will be described in detail below with reference to the accompanying drawings. It should be noted that the deficiencies in the existing solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the aforementioned technical problems and the solutions proposed in this embodiment below are contributions made by the inventors to this application during the invention process, and should not be construed as technical content known to those skilled in the art.

[0033] Please see 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.

[0034] The substrate 1 may include a substrate and a plurality of driving units located on one side of the substrate, each driving unit may include one or more semiconductor switching devices. The semiconductor switching devices may be formed by the interaction of multiple film layers in the substrate 1; for example, the semiconductor switching devices may be thin-film transistors formed by the interaction of multiple film layers.

[0035] The isolation structure 3 is located on one side of the substrate 1, and the isolation structure 3 encloses and forms an isolation opening 8, with at least a portion of the light-emitting units 7 located within the isolation opening 8.

[0036] 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 spaced apart. 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. At least one encapsulation unit 91 includes an encapsulation groove 911 on the side away from the substrate 1.

[0037] Since the isolation structure 3 has a recess on the side facing the isolation opening 8 that is away from the isolation opening 8, the packaging unit 91 extends along the sidewall of the isolation structure 3, and a packaging groove 911 is formed at the recessed position on the side away from the substrate 1.

[0038] The filter layer 10 is located on the 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 orthogonal projection of the filter portions 101 on the substrate 1 covers the orthogonal projection of the light-emitting unit 7 on the substrate 1.

[0039] The filter color of the filter unit 101 is the same as the emission color of the corresponding light-emitting unit 7. Therefore, the filter unit 101 can allow the light emitted by the corresponding light-emitting unit 7 to pass through, and filter out light of different colors emitted by the light-emitting unit 7. For example, if the light emitted by the light-emitting unit 7 is red, the filter unit 101 corresponding to the light-emitting unit 7 can allow red light to pass through and filter out light other than red light, thereby improving the light emission efficiency of the light-emitting unit 7.

[0040] The encapsulation unit 91 can independently encapsulate the corresponding light-emitting unit 7, thereby improving the display characteristics of the display panel. By placing the filter part 101 on the side of the first encapsulation layer 9 away from the substrate 1, the distance between the filter part 101 and the light-emitting unit 7 can be reduced, thereby further improving the light emission efficiency of the light-emitting unit 7.

[0041] Based on the above design, this embodiment provides a filter layer 10 on the side of the first encapsulation layer 9 away from the substrate 1. Compared with the method of providing a polarizer on the side of the encapsulation layer away from the substrate 1 in related technologies, this can greatly improve the light emission efficiency of the corresponding light-emitting unit 7, thereby greatly improving the display effect of the display panel.

[0042] In some possible implementations, please refer again. Figure 1 The light-emitting unit 7 includes a first electrode 4, a light-emitting part 5, and a second electrode 6 stacked sequentially along the direction away from the substrate 1. The display panel also includes a pixel defining layer 2 located on the side of the first electrode 4 away from the substrate 1, and an isolation structure 3 located on the side of the pixel defining layer 2 away from the substrate 1. The pixel defining layer 2 includes a pixel opening 21 that exposes at least part of the first electrode 4, and 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.

[0043] The isolation structure 3 allows the display panel to form film layers of different colors of light-emitting units 7 in different isolation openings 8 without the need for a fine metal mask. Specifically, when forming the light-emitting functional layer, the light-emitting functional layer is isolated by the isolation structure 3 to form multiple spaced light-emitting parts 5. When forming the second electrode layer, the second electrode layer is isolated by the isolation structure 3 to form multiple spaced second electrodes 6. The isolation structure 3 includes a conductive material, and the second electrodes 6 are electrically connected to the isolation structure 3. A first electrode 4, a light-emitting part 5, and a second electrode 6 form a light-emitting unit 7. The first electrode 4 can be an anode, and the second electrode 6 can be a cathode.

[0044] In this way, different light-emitting units 7 can be made independent of each other, thereby reducing 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 each color light-emitting unit 7 of the display panel can be fabricated and patterned on the entire surface first, thereby eliminating the need for a fine metal mask and saving on the manufacturing cost of the display panel.

[0045] For some possible implementations, please refer to Figure 2The 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 shorter than that of the second light-emitting unit, and the light-emitting wavelength of the second light-emitting unit is shorter than that of the third light-emitting unit. Specifically, the light-emitting color of the first light-emitting unit is blue, the light-emitting color of the second light-emitting unit is green, and the light-emitting color of the third light-emitting unit is red.

[0046] Optionally, the orthographic projection of the encapsulation groove 911 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0047] In some embodiments, please refer again Figure 2 The encapsulation groove 911 of the encapsulation 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 encapsulation material located on the lower edge of the protrusion of the isolation structure 3 and the encapsulation material located above the edge of the pixel definition layer 2 are connected to each other to form the first sealing structure 912. The first sealing structure 912 also includes an air gap formed by the interconnection of the surfaces of the encapsulation units.

[0048] Alternatively, please see Figure 3 The encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first encapsulation sub-part 913, which fills the encapsulation groove 911 located on the side of the first light-emitting unit away from the substrate 1. The surface of the encapsulation unit 91 is continuously disposed, and there is no structure on the surface of the encapsulation unit above the pixel definition layer 2 that decreases in height.

[0049] Optionally, the orthographic projection of the first package sub-part 913 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0050] Please see again Figure 2 and Figure 3 The encapsulation groove 911 of the encapsulation 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 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.

[0051] In this embodiment, the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1 can seal the corresponding encapsulation groove 911 on the side away from the substrate 1, so that the encapsulation groove 911 on the side of the first encapsulation unit 91 away from the substrate 1 forms a first sealing structure 912; or, the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1 can fill the corresponding encapsulation groove 911. In this way, during the subsequent manufacturing process of the display panel, it is not easy for photoresist or other residues that affect the light emission of the first light-emitting unit to remain in the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1, and etching liquid or other substances are not easy to penetrate into the first light-emitting unit from the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1, thereby not easily damaging the first light-emitting unit, and ultimately improving the light emission efficiency and display effect of the first light-emitting unit.

[0052] In other embodiments, please refer to Figure 4a The encapsulation groove 911 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first sealing structure 912; the encapsulation groove 911 of the encapsulation 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 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.

[0053] Please see Figure 5 The packaging unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first packaging sub-part 913, which fills the packaging groove 911. The packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second packaging sub-part 915, which fills the packaging groove 911 located on the side of the second light-emitting unit away from the substrate 1. 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.

[0054] Optionally, the orthographic projection of the second encapsulation sub-part 915 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0055] In this embodiment, the encapsulation unit 91 on the side of the first and second light-emitting units away from the substrate 1 can seal the corresponding encapsulation groove 911 away from the substrate 1, forming a first sealing structure 912 on the encapsulation groove 911 on the side of the first light-emitting unit away from the substrate 1, and forming a second sealing structure 914 on the encapsulation groove 911 on the side of the second light-emitting unit away from the substrate 1; or, the encapsulation unit 91 on the side of the first and second light-emitting units away from the substrate 1 can fill the corresponding encapsulation groove 911. Thus, in the subsequent fabrication process of the display panel, it is less likely that photoresist or other residues affecting the light emission of the first and second light-emitting units will remain in the encapsulation groove 911 of the encapsulation unit 91 on the side of the first and second light-emitting units away from the substrate 1, and etching liquid or other substances will not easily penetrate the first and second light-emitting units from the encapsulation groove 911 on the side of the encapsulation unit 91 on the side of the first and second light-emitting units away from the substrate 1, thereby reducing the risk of damage to the first and second light-emitting units and ultimately improving the light emission efficiency and display effect of the first and second light-emitting units.

[0056] In some other embodiments, please refer to Figure 6 The encapsulation groove 911 of the encapsulation unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first sealing structure 912; the encapsulation groove 911 of the encapsulation 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 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 third sealing structure 916.

[0057] Please see Figure 7 The packaging unit 91 located on the side of the first light-emitting unit away from the substrate 1 includes a first packaging sub-part 913, which fills the packaging groove 911. The packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1 includes a second packaging sub-part 915, which fills the packaging groove 911. The packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1 includes a third packaging sub-part 917, which fills the packaging groove 911 located on the side of the third light-emitting unit away from the substrate 1.

[0058] Optionally, the orthographic projection of the third encapsulation sub-part 917 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0059] 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 groove 911 away from the substrate 1, so that the packaging groove 911 on the side of the packaging unit 91 of the first light-emitting unit away from the substrate 1 forms a first sealing structure 912, the packaging groove 911 on the side of the packaging unit 91 of the second light-emitting unit away from the substrate 1 forms a second sealing structure 914, and the packaging groove 911 on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1 forms 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 groove 911. Thus, in the subsequent manufacturing process of the display panel, it is less likely that photoresist or other residues affecting the light emission of the first, second, and third light-emitting units will remain in the encapsulation groove 911 of the encapsulation unit 91 on the side of the first, second, and third light-emitting units away from the substrate 1. Also, it is less likely that etching solution or other substances will penetrate into the first, second, and third light-emitting units from the encapsulation groove 911 of the encapsulation unit 91 on the side of the first, second, and third light-emitting units away from the substrate 1. This makes it less likely to damage the first, second, and third light-emitting units, and ultimately improves the light emission efficiency and display effect of the first, second, and third light-emitting units.

[0060] For some possible implementations, please refer to Figure 8 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. The filter section 101 includes a first filter section 1011 located on the side of the first light-emitting unit away from the substrate 1, a second filter section 1012 located on the side of the second light-emitting unit away from the substrate 1, and a third filter section 1013 located on the side of the third light-emitting unit away from the substrate 1. The side of the first filter section 1011 away from the substrate 1 has a first distance to the surface of the substrate 1, the side of the second filter section 1012 away from the substrate 1 has a second distance to the surface of the substrate 1, and the side of the third filter section 1013 away from the substrate 1 has a third distance to the surface of the substrate 1. The first distance is equal to the second distance and the third distance is equal to the third distance.

[0061] The first distance, the second distance, and the third distance are the maximum distance from the side of the filter section 101 away from the substrate 1 to the substrate 1, or the average distance from each point on the side of the filter section 101 away from the substrate 1 to the substrate 1, or the distance between the filter section 101 and the substrate 1 passing through the center of the light-emitting unit 7 along a direction perpendicular to the substrate 1. In some embodiments, please refer again Figure 8The packaging unit 9 includes a first packaging portion 901 located within the isolation opening 8, a second packaging portion 902 covering the sidewall of the isolation structure 3 facing the isolation opening 8, and a third packaging portion 903 located on the side of the isolation structure 3 away from the substrate 1. Along a direction perpendicular to the substrate 1, the thickness H1 of the first packaging portion 901 on the side of the first light-emitting unit away from the substrate 1 is greater than the thickness H2 of the first packaging portion 901 on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the first packaging portion 901 on the side of the second light-emitting unit away from the substrate 1 is greater than the thickness H3 of the first packaging portion 901 on the side of the third light-emitting unit away from the substrate 1.

[0062] Optionally, the orthographic projection of the first encapsulation unit 901 on the substrate 1 covers the orthographic projection of the light-emitting unit 7 on the substrate 1.

[0063] 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; the thickness D2 of the filter portion 101 located on the side of the second light-emitting unit away from the substrate 1 is less than the thickness D3 of the filter portion 101 located on the side of the third light-emitting unit away from the substrate 1.

[0064] The thickness of the first encapsulation part 901 is the thickness of the first encapsulation part 901 along the direction perpendicular to the substrate 1, passing through the center line of the light-emitting unit located on the side of the first encapsulation part 901 close to the substrate 1.

[0065] The thickness of the filter section 101 is the thickness of the filter section 101 along the direction perpendicular to the substrate 1, passing through the center line of the light-emitting unit located on the side of the filter section 101 close to the substrate 1.

[0066] The thicker the encapsulation unit 91, the easier it is to form a sealing structure at the encapsulation groove 911, or the easier it is to fill the encapsulation groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1.

[0067] In this embodiment, the above design allows the filter portions 101 corresponding to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit to be located on the same plane away from the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and the surface of the second encapsulation layer 11 away from the substrate 1 can be made flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and making it more conducive to improving the light emission efficiency of the light-emitting unit 7.

[0068] In other embodiments, please refer again. Figure 3Along the direction perpendicular to the substrate 1, the thickness H1 of the first encapsulation portion 901 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 on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the first encapsulation portion 901 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 on the side of the third light-emitting unit away from the substrate 1.

[0069] 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; the thickness D2 of the filter portion 101 located on 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 on the side of the third light-emitting unit away from the substrate 1.

[0070] In this embodiment, the above design allows the filter portions 101 corresponding to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit to be located on the same plane away from the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and the surface of the second encapsulation layer 11 away from the substrate 1 can be made flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and making it more conducive to improving the light emission efficiency of the light-emitting unit 7.

[0071] In some possible implementations, 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.

[0072] The distance from the side of the filter section 101 away from the substrate 1 to the substrate 1 is the maximum distance from the side of the filter section 101 away from the substrate 1 to the substrate 1, or the average distance from each point on the side of the filter section 101 away from the substrate 1 to the substrate 1, or the distance between the filter section 101 and the substrate 1 at the center of the light-emitting unit 7 along a direction perpendicular to the substrate 1.

[0073] In some embodiments, see Figure 9 Along the direction perpendicular to the substrate 1, the thickness H1 of the packaging 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 packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the packaging 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 packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1.

[0074] Along the direction perpendicular to the substrate 1, 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; the thickness D2 of the filter portion 101 located on 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 on the side of the third light-emitting unit away from the substrate 1.

[0075] The thicker the encapsulation unit 91, the easier it is to form a sealing structure at the encapsulation groove 911, or the easier it is to fill the encapsulation groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit and the second light-emitting unit away from the substrate 1.

[0076] Since thickness H1 is greater than thickness H2, thickness H2 is greater than thickness H3, and thickness D1 is equal to thickness D2 and thickness D3, 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.

[0077] In other embodiments, please refer to Figure 10 Along the direction perpendicular to the substrate 1, the thickness H1 of the packaging 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 packaging unit 91 located on the side of the second light-emitting unit away from the substrate 1; the thickness H2 of the packaging 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 packaging unit 91 located on the side of the third light-emitting unit away from the substrate 1.

[0078] Along the direction perpendicular to the substrate 1, 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; the thickness D2 of the filter portion 101 located on 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 on the side of the third light-emitting unit away from the substrate 1.

[0079] Since thickness H1 is greater than thickness H2, thickness H2 is equal to thickness H3, and thickness D1 is equal to thickness D2 and thickness D3, 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.

[0080] For some possible implementations, please refer to Figures 11-13 The filter layer 10 also includes a plurality of light-shielding portions 102 spaced apart, and the orthographic projection of the light-shielding portions 102 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0081] Optionally, the light filter 101 and the light shield 102 are arranged at intervals along the arrangement direction of the isolation opening 8.

[0082] Optionally, the orthographic projection of the filter section 101 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation structure 3 on the substrate 1.

[0083] 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.

[0084] Optionally, the orthographic projection of the light-shielding portion 102 on the substrate 1 overlaps with the orthographic projection of the adjacent light-filtering portion 101 on the substrate 1, and at least part of the side of the light-shielding portion 102 near the substrate 1 contacts the isolation structure 3.

[0085] The material of the light-shielding part 102 may include black glue. The light emitted by the light-emitting unit 7 generally cannot pass through the light-shielding part 102. In this embodiment, the light-shielding part 102 is disposed on the side of the isolation structure 3 away from the substrate 1, which can reduce the distance between the light-shielding part 102 and the light-emitting unit 7. Therefore, the light-shielding part 102 can block the light of the light-emitting unit 7 at a wide viewing angle, thereby increasing the amount of light emitted by the light-emitting unit 7 in the wide viewing angle direction.

[0086] The light-shielding part 102 can absorb external light and reduce the reflectivity of external light, thereby improving the light emission effect of the light-emitting unit 7 and ultimately further improving the display quality of the display panel.

[0087] In some possible implementations, please refer again. Figure 1 The packaging unit 91 is spaced apart on the side of the isolation structure 3 away from the substrate 1. There is a gap between the packaging unit 91 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 the orthographic projection of part of the isolation structure 3 on the substrate 1.

[0088] 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.

[0089] Preferably, the filter portion 101 fills at least part of the gap; in this way, the stability of the filter portion 101 can be improved.

[0090] For some possible implementations, please refer to Figure 14 The display panel also includes a third encapsulation layer 13 located on the 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.

[0091] 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 achieve a better encapsulation effect on the light-emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0092] In some possible implementations, please refer again. Figure 13 The isolation structure 3 includes a first isolation portion 31 and a second isolation portion 32 stacked sequentially along the direction away from the substrate 1. The orthographic projection of the side of the first isolation portion 31 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation portion 32 on the substrate 1.

[0093] Since the second isolation portion 32 is located on the side of the first isolation portion 31 away from the substrate 1, and on a plane parallel to the substrate 1, the lateral width of the second isolation portion 32 is greater than the lateral width of the first isolation portion 31. Therefore, the second isolation portion 32 disconnects the light-emitting functional layer and the second electrode layer at the isolation structure 3. Thus, the isolation structure 3 formed by the first isolation portion 31 and the second isolation portion 32 makes it easier to independently package each light-emitting unit 7, thereby improving the packaging yield of the display panel.

[0094] Preferably, please see again. Figure 13 The second electrode 6 of the light-emitting unit 7 is electrically connected to the first isolation part 31. The first isolation part 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 part 31 so as to realize the electrical connection between the second electrode 6 corresponding to the light-emitting unit 7 and the first isolation part 31.

[0095] Please see again Figure 14 The isolation structure 3 also includes a third isolation section 33 located on the side of the first isolation section 31 facing the substrate 1, and the second electrode 6 of the light-emitting unit 7 is electrically connected to the third isolation section 33.

[0096] The third isolation section 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 section 33 so as to realize the electrical connection between the second electrode 6 corresponding to the light-emitting unit 7 and the third isolation section 33.

[0097] 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. Thus, when the isolation structure 3 isolates 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.

[0098] The orthographic projection of the light-emitting part 5 on the substrate 1 is outside the orthographic projection of the third isolation part 33 and / or the first isolation part 31 on the substrate 1. In this way, the light-emitting part 5 does not overlap with the isolation structure 3, thereby effectively improving the crosstalk problem between the light-emitting units 7.

[0099] In some possible implementations, this application also provides a display panel, which includes a substrate 1, an isolation structure 3, a light-emitting unit 7, and a filter layer 10.

[0100] The isolation structure 3 is located on one side of the substrate 1, and the isolation structure 3 encloses and forms an isolation opening 8; at least a portion of the light-emitting units 7 are located within the isolation opening 8, and the light-emitting units 7 include a first light-emitting unit and a second light-emitting unit.

[0101] The filter layer 10 is located on the 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 orthogonal projection of the filter portions 101 on the substrate 1 covers the orthogonal projection of the light-emitting unit 7 on the substrate 1.

[0102] 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 equal to 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.

[0103] Please see again Figure 8 Along the direction perpendicular to the substrate 1, the thickness H1 of the packaging 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 packaging 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.

[0104] The thicker the encapsulation unit 91, the easier it is to form a sealing structure at the encapsulation groove 911, or the easier it is to fill the encapsulation groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1.

[0105] 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 portions 101 corresponding to the first light-emitting unit and the second light-emitting unit can be located on the same plane on the side away from the substrate 1. Therefore, the material of the second encapsulation layer 11 is easier to level, and the surface of the second encapsulation layer 11 on the side away from the substrate 1 can be flat, thereby further improving the encapsulation effect of the light-emitting unit 7 and making it more conducive to improving the light emission efficiency of the light-emitting unit 7.

[0106] In some embodiments, see Figure 4b The second opening structure 919 is provided with a first filter sub-section 10111 of the same color as the first filter section 1011. The first filter sub-section 10111 at least partially covers the side wall of the second opening structure 919 facing the isolation structure 3.

[0107] 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.

[0108] 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.

[0109] In this embodiment, the first filter portion 1011 is fabricated before the third filter portion 1013. When fabricating the first filter portion 1011, the sidewall of the second opening structure 919 facing the isolation structure 3 may have a residual first filter sub-portion 10111 of the first filter portion 1011. Thus, both the first filter sub-portion 10111 and the third filter portion 1013 are located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0110] In other embodiments, please refer to Figure 4c The second opening structure 919 is provided with a second filter sub-section 10121 of the same color as the second filter section 1012. The second filter sub-section 10121 at least partially covers the side wall of the second opening structure 919 facing the isolation structure 3.

[0111] Optionally, 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.

[0112] In this embodiment, the second filter portion 1012 is fabricated before the third filter portion 1013. When fabricating the second filter portion 1012, there may be a second filter sub-portion 10121 remaining on the sidewall of the second opening structure 919 facing the isolation structure 3. Thus, both the second filter sub-portion 10121 and the third filter portion 1013 are located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0113] In some other embodiments, please refer to Figure 4c The second opening structure 919 is provided with a first filter sub-section 10111 of the same color as the first filter section 1011 and a second filter sub-section 10121 of the same color as the second filter section 1012. The first filter sub-section 10111 and the second filter sub-section 10121 are arranged sequentially along the opening direction of the second opening structure 919.

[0114] Optionally, the orthographic projections of the first filter portion 10111 and the second filter portion 10121 on the substrate 1 at least partially overlap with the orthographic projection of the isolation structure 3 on the substrate 1.

[0115] In this embodiment, the first filter portion 1011 and the second filter portion 1012 are fabricated before the third filter portion 1013. When fabricating the first filter portion 1011 and the second filter portion 1012, the sidewall of the second opening structure 919 facing the isolation structure 3 may have the first filter sub-parts 10111 and the second filter sub-parts 10121 remaining from the first filter portion 1011 and the second filter portion 1012, respectively. Thus, the first filter sub-parts 10111, the second filter sub-parts 10121 and the third filter portion 1013 are all located on the side of the packaging unit 91 of the third light-emitting unit away from the substrate 1.

[0116] In some possible implementations, this application also provides a display panel, which includes a substrate 1, an isolation structure 3, a light-emitting unit 7, and a filter layer 10.

[0117] The isolation structure 3 is located on one side of the substrate 1, and the isolation structure 3 encloses and forms an isolation opening 8; at least a portion of the light-emitting units 7 are located within the isolation opening 8, and the light-emitting units 7 include a first light-emitting unit and a second light-emitting unit.

[0118] The filter layer 10 is located on the 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 orthogonal projection of the filter portions 101 on the substrate 1 covers the orthogonal projection of the light-emitting unit 7 on the substrate 1.

[0119] 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.

[0120] Please see again Figure 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.

[0121] The thicker the encapsulation unit 91, the easier it is to form a sealing structure at the encapsulation groove 911, or the easier it is to fill the encapsulation groove 911. Therefore, in this embodiment, it is easier to form a sealing structure at the encapsulation groove 911 of the encapsulation unit 91 on the side of the first light-emitting unit away from the substrate 1.

[0122] Since thickness H1 is greater than thickness H2 and thickness D1 is equal to thickness D2, 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.

[0123] For some possible implementations, please refer to Figure 15 This application also provides a method for manufacturing a display panel, the method comprising: S10: Provide substrate 1.

[0124] S11: An isolation structure 3 is formed on one side of the substrate 1, and the isolation structure 3 encloses and forms an isolation opening 8.

[0125] Please see Figure 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 spaced apart.

[0126] Please see Figure 17 A pixel defining material layer 14 and an isolation material layer 15 are sequentially formed on the side of the first electrode layer away from the substrate 1.

[0127] Please see Figure 18 The isolation material layer 15 and the pixel defining material layer 14 are etched sequentially to form the isolation structure 3 and the pixel defining layer 2, respectively. The pixel defining layer 2 includes a pixel opening 21 that exposes 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.

[0128] S12: At least a portion of the light-emitting unit 7 is formed in the isolation opening 8 and a first encapsulation layer 9 is formed 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 spaced apart, and at least one encapsulation unit 91 includes an encapsulation groove 911 on the side away from the substrate 1.

[0129] Please see Figure 19 The light-emitting part 5 of the light-emitting unit 7 and the second electrode 6 are formed in the isolation opening 8, and the encapsulation unit 91 is formed on the side of the second electrode 6 away from the substrate 1.

[0130] S13: A filter layer 10 is formed on the side of the first encapsulation layer 9 away from the substrate 1. The filter layer 10 includes a plurality of filter portions 101 spaced apart. The orthogonal projection of the filter portions 101 on the substrate 1 covers the orthogonal projection of the light-emitting unit 7 on the substrate 1.

[0131] Please see again Figure 1 A filter layer 10 is formed on the side of the light-emitting unit 7 away from the substrate 1. The filter color of the filter portion 101 of the filter layer 10 is the same as the light emission 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 light of different colors emitted by the light-emitting unit 7. For example, if the light emitted by the light-emitting unit 7 is red, the filter portion 101 corresponding to the light-emitting unit 7 can allow red light to pass through and filter light other than red light, thereby improving the light emission efficiency of the light-emitting unit 7.

[0132] The encapsulation unit 91 can independently encapsulate 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 encapsulation layer 9 away from the substrate 1 using the above method, the distance between the filter part 101 and the light-emitting unit 7 can be reduced, thereby further improving the light emission efficiency of the light-emitting unit 7.

[0133] In some possible embodiments, this application also provides an electronic device, which includes the display panel described in this application, or a display panel prepared by the method described in this application. This electronic device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Because this electronic device includes the display panel described in this application, it has higher light extraction efficiency and better display quality.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0135] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; The light-emitting unit is at least partially located within the isolation opening; A first encapsulation layer is located on the side of the light-emitting unit away from the substrate. The first encapsulation layer includes a plurality of encapsulation units spaced apart, and at least one of the encapsulation units includes an encapsulation groove on the side away from the substrate. A filter layer is located on the side of the first encapsulation layer away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthographic projection of the filter portions on the substrate covers the orthographic projection of the light-emitting unit on the substrate. The light-emitting unit includes a first light-emitting unit and a second light-emitting unit, and the packaging unit includes a first packaging portion located within the isolation opening. Along a direction perpendicular to the substrate, the thickness of the first packaging portion located on the side of the first light-emitting unit away from the substrate is greater than the thickness of the first packaging portion located on the side of the second light-emitting unit away from the substrate. The filtering portion includes a first filtering portion located on the side of the first light-emitting unit away from the substrate and a second filtering portion located on the side of the second light-emitting unit away from the substrate. Along a direction perpendicular to the substrate, the thickness of the first filtering portion located on the side of the first light-emitting unit away from the substrate is less than the thickness of the second filtering portion located on the side of the second light-emitting unit away from the substrate. The side of the first filtering portion away from the substrate has a first distance to the substrate surface, and the side of the second filtering portion away from the substrate has a second distance to the substrate surface. The first distance and the second distance are equal.

2. The display panel according to claim 1, characterized in that, The encapsulation groove of the encapsulation unit located on the side of the first light-emitting unit away from the substrate includes a first sealing structure, or the encapsulation unit located on the side of the first light-emitting unit away from the substrate includes a first encapsulation sub-part, the first encapsulation sub-part filling the encapsulation groove located on the side of the first light-emitting unit away from the substrate.

3. The display panel according to claim 2, characterized in that, The encapsulation recess 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 recess 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-part, the second encapsulation sub-part filling the encapsulation recess located on the side of the second light-emitting unit away from the substrate.

4. The display panel according to claim 3, characterized in that, The light-emitting unit further includes a third light-emitting unit. The encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate includes 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 includes a third sealing structure, or the encapsulation unit located on the side of the third light-emitting unit away from the substrate includes a third encapsulation sub-part, which fills the encapsulation groove located on the side of the third light-emitting unit away from the substrate.

5. The display panel according to claim 1, characterized in that, The orthographic projection of the encapsulation groove on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate.

6. The display panel according to claim 4, characterized in that, The orthographic projection of the first package sub-part on the substrate and the orthographic projection of the isolation structure on the substrate at least partially overlap; The orthographic projection of the second package sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; The orthographic projection of the third encapsulation sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate.

7. The display panel according to claim 1, characterized in that, The filter layer also includes a plurality of light-shielding portions spaced apart, wherein the orthographic projection of the light-shielding portions on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate.

8. The display panel according to claim 7, characterized in that, The light-emitting unit further includes a third light-emitting unit, and the light-filtering part and the light-shielding part are arranged at intervals along the arrangement direction of the isolation opening; The color of the filter section is the same as the light emission color of the light-emitting unit located on the side of the filter section closer to the substrate; The orthogonal projection of the filter portion on the substrate at least partially overlaps with the orthogonal projection of the isolation structure on the substrate; The orthogonal projection of the light-shielding portion onto the substrate is located within the orthogonal projection range of the isolation structure onto the substrate; The emission wavelength of the first light-emitting unit is shorter than that of the second light-emitting unit; And / or, the emission wavelength of the second light-emitting unit is shorter than that of the third light-emitting unit.

9. The display panel according to claim 1, characterized in that, The light-emitting unit further includes a third light-emitting unit, and the filter part further includes a third filter part located on the side of the third light-emitting unit away from the substrate. The side of the third filter part away from the substrate has a third distance from the substrate surface, and the second distance is equal to the third distance.

10. The display panel according to claim 9, characterized in that, The first distance, the second distance, and the third distance are 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 passing through the center of the light-emitting unit along a direction perpendicular to the substrate.

11. The display panel according to claim 1, characterized in that, The packaging unit further includes a second packaging portion covering one sidewall of the isolation structure facing the isolation opening and a third packaging portion located on the side of the isolation structure away from the substrate; The thickness of the second encapsulation portion is the thickness of the second encapsulation portion along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the second encapsulation portion closer to the substrate.

12. The display panel according to claim 1, characterized in that, The light-emitting unit further includes a third light-emitting unit. Along a direction perpendicular to the substrate, the thickness of the first encapsulation portion located on the side of the second light-emitting unit away from the substrate is greater than or equal to the thickness of the first encapsulation portion located on the side of the third light-emitting unit away from the substrate.

13. The display panel according to claim 12, characterized in that, The filter section further includes a third filter section located on the side of the third light-emitting unit away from the substrate. Along a direction perpendicular to the substrate, the thickness of the second filter section located on the side of the second light-emitting unit away from the substrate is less than or equal to the thickness of the third filter section located on the side of the third light-emitting unit away from the substrate.

14. The display panel according to claim 1, characterized in that, The orthographic projection of the first encapsulation portion on the substrate covers the orthographic projection of the light-emitting unit on the substrate; The thickness of the filter portion is the thickness of the filter portion along a direction perpendicular to the substrate, passing through the center line of the light-emitting unit located on the side of the filter portion closer to the substrate.

15. The display panel according to claim 1, characterized in that, The display panel further includes a second encapsulation layer located on the side of the filter layer away from the substrate, and the surface of the second encapsulation layer on the side away from the substrate is flat.

16. The display panel according to claim 1, characterized in that, The display panel further includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate; Both the first encapsulation layer and the third encapsulation layer are made of inorganic materials; The material of the second encapsulation layer includes organic materials.

17. The display panel according to any one of claims 1-16, characterized in that, The packaging units are spaced apart on the side of the isolation structure away from the substrate; There is a gap between the packaging unit located on the side of the isolation structure away from the substrate and the side of the isolation structure away from the substrate; The filter portion fills at least a portion of the gap; The orthographic projection of the packaging unit on the substrate covers the orthographic projection of the isolation opening on the substrate and the orthographic projection of the isolation structure on the substrate; The light-emitting unit includes a first electrode, a light-emitting part, and a second electrode that are sequentially stacked along a direction away from the substrate.

18. The display panel according to claim 17, characterized in that, The display panel further includes a pixel defining layer located on the side of the first electrode away from the substrate, and the isolation structure is located on the side of the pixel defining layer away from the substrate; the pixel defining layer includes pixel openings that expose at least a portion of the first electrode; The orthographic projection of the pixel opening on the substrate lies within the orthographic projection of the isolation opening on the substrate.

19. The display panel according to any one of claims 1-16, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthogonal projection of the side of the first isolation portion away from the substrate on the substrate is located within the orthogonal projection of the second isolation portion on the substrate. The second electrode of the light-emitting unit is electrically connected to the first isolation portion; and / or, the isolation structure further includes a third isolation portion located on the 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; The material of the third isolation part includes molybdenum metal; and / or, the material of the first isolation part includes aluminum metal; and / or, the material of the second isolation part includes titanium metal.

20. The display panel according to claim 1, characterized in that, The light-emitting unit further includes a third light-emitting unit. The encapsulation groove of the encapsulation unit located on the side of the third light-emitting unit away from the substrate includes a second opening structure. A first filter sub-part with the same color as the first filter sub-part is provided in the second opening structure. The first filter sub-part at least partially covers the sidewall of the second opening structure facing the isolation structure.

21. The display panel according to claim 20, characterized in that, 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; The orthographic projection of the first filter sub-part on the substrate and the orthographic projection of the isolation structure on the substrate at least partially overlap; The second opening structure is provided with a second filter sub-section of the same color as the second filter section, and the second filter sub-section at least partially covers the sidewall of the second opening structure facing the isolation structure; The orthographic projection of the second filter sub-part on the substrate at least partially overlaps with the orthographic projection of the isolation structure on the substrate; The second opening structure is provided with a first filter sub-part of the same color as the first filter part and a second filter sub-part of the same color as the second filter part, and the first filter sub-part and the second filter sub-part are arranged sequentially along the opening direction of the second opening structure; The orthographic projections of the first and second filter portions on the substrate at least partially overlap with the orthographic projection of the isolation structure on the substrate.

22. A method for manufacturing a display panel, characterized in that, The method includes: Provide substrate; An isolation structure is formed on one side of the substrate, and the isolation structure encloses an isolation opening; At least a portion of the light-emitting units are formed within the isolation opening, and a first encapsulation layer is formed on the side of the light-emitting units away from the substrate. The first encapsulation layer includes a plurality of spaced-apart encapsulation units, and at least one of the encapsulation units includes an encapsulation groove on the side away from the substrate. A filter layer is formed on the side of the first encapsulation layer away from the substrate. The filter layer includes a plurality of filter portions spaced apart. The orthogonal projection of the filter portions on the substrate covers the orthogonal projection of the light-emitting unit on the substrate. The light-emitting unit includes a first light-emitting unit and a second light-emitting unit. The encapsulation unit includes a first encapsulation portion located within the isolation opening. Along a direction perpendicular to the substrate, the thickness of the first encapsulation portion on the side of the first light-emitting unit away from the substrate is greater than the thickness of the first encapsulation portion on the side of the second light-emitting unit away from the substrate. The filter portion includes a first filter portion on the side of the first light-emitting unit facing away from the substrate and a second filter portion on the side of the second light-emitting unit away from the substrate. Along a direction perpendicular to the substrate, the thickness of the first filter portion on the side of the first light-emitting unit away from the substrate is less than the thickness of the second filter portion on the side of the second light-emitting unit away from the substrate. The side of the first filter portion away from the substrate has a first distance to the substrate surface, and the side of the second filter portion away from the substrate has a second distance to the substrate surface. The first distance and the second distance are equal.

23. An electronic device, characterized in that, The electronic device includes a display panel as described in any one of claims 1-21, or includes a display panel prepared by the method for preparing a display panel as described in claim 22.

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