Display panel, manufacturing method thereof and display device

Abstract

The invention provides a display panel, a manufacturing method thereof and a display device. The display panel comprises a substrate, and an insulating layer is arranged on the substrate and comprises a concave part and a convex part; the isolation structure is located on the side, away from the substrate, of the insulation layer and forms a first isolation opening and a second isolation opening in an enclosing mode, the orthographic projection of the first isolation opening on the substrate is overlapped with the orthographic projection of the protruding part on the substrate, and the orthographic projection of the second isolation opening on the substrate is overlapped with the orthographic projection of the concave part on the substrate. At least part of the light-emitting units are located in the corresponding isolation openings. At least part of a first light-emitting unit in the plurality of light-emitting units is located in the corresponding first isolation opening; and at least part of the second light-emitting unit in the plurality of light-emitting units is located in the corresponding second isolation opening. The display effect can be improved.

Description

Technical Field

[0001] This disclosure relates to display panels, and more particularly to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] OLED (Organic Light Emitting Diode) display panels are one of the hottest research topics in the field of display panels today. OLED display panels have advantages such as low energy consumption, low cost, self-emissiveness, wide viewing angle and fast response speed.

[0003] In traditional display panel manufacturing, a fine metal mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also suffers from limitations in precision, high development costs, and long development cycles. Fine metal maskless technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance characteristics, offering advantages such as high performance, full-size display, and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, and CN118781966A describe relevant aspects of fine metal maskless technology and are provided for reference.

[0004] However, OLED display panels in related technologies suffer from poor uniformity of display brightness. Summary of the Invention

[0005] In view of this, the purpose of this disclosure is to provide a display panel and its manufacturing method, as well as a display device, which can better improve the display effect of the display panel.

[0006] For the purposes described above, this disclosure discloses a display panel comprising:

[0007] substrate;

[0008] An insulating layer is located on one side of the substrate. The insulating layer includes protrusions and recesses, with the protrusions protruding in a direction away from the substrate.

[0009] An isolation structure is located on the side of the insulating layer away from the substrate. The isolation structure encloses and forms multiple isolation openings, including a first isolation opening and a second isolation opening. The orthographic projection of the first isolation opening on the substrate overlaps with the orthographic projection of the protrusion on the substrate, and the orthographic projection of the second isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0010] A plurality of light-emitting units, at least a portion of which is located in a corresponding isolation opening; the plurality of light-emitting units includes a first light-emitting unit and a second light-emitting unit, at least a portion of which is located in a corresponding first isolation opening and at least a portion of which is located in a corresponding second isolation opening.

[0011] In one embodiment, the display panel further includes:

[0012] The first encapsulation layer is located on the side of the plurality of light-emitting units away from the substrate. The first encapsulation layer includes a plurality of encapsulation portions, which are located on the side of the corresponding light-emitting unit away from the substrate and extend to the side of the isolation structure away from the substrate.

[0013] Optionally, the orthographic projections of adjacent package portions on the substrate overlap, or the orthographic projections of adjacent package portions on the substrate are spaced apart.

[0014] Optionally, the plurality of encapsulation portions include a first encapsulation portion and a second encapsulation portion. The first encapsulation portion is located on the side of the first light-emitting unit facing away from the substrate and extends to the side of the isolation structure facing away from the substrate. The second encapsulation portion is located on the side of the second light-emitting unit facing away from the substrate and extends to the side of the isolation structure facing away from the substrate.

[0015] Optionally, the orthographic projection of the second package portion on the substrate does not overlap with the orthographic projection of the surface of the protrusion portion away from the substrate on the substrate;

[0016] Optionally, the orthographic projection of the second encapsulation portion on the substrate may or may not overlap with the orthographic projection of the sidewall of the protrusion on the substrate.

[0017] In one embodiment, the isolation structure includes a central region and an edge region located on the side of the central region facing the isolation opening, and the orthographic projection of the overlapping portion on the substrate is within the orthographic projection range of the central region on the substrate;

[0018] Optionally, the edge region includes a first edge region located on the side of the middle region facing the first isolation opening, and a second edge region located on the side of the middle region facing the second isolation opening. The orthographic projection of the first edge region on the substrate is within the orthographic projection range of the protrusion on the substrate, and the orthographic projection of the second edge region on the substrate is outside the orthographic projection range of the protrusion on the substrate.

[0019] Optionally, the orthographic projection of the second edge region onto the substrate is located within the orthographic projection range of the recess onto the substrate;

[0020] Optionally, along the direction perpendicular to the surface of the substrate, the distance from the surface of the middle region away from the substrate to the substrate is less than the distance from the surface of the first edge region away from the substrate to the substrate.

[0021] Optionally, along the direction perpendicular to the surface of the substrate, the distance from the surface of the first edge region away from the substrate to the substrate is greater than the distance from the surface of the second edge region away from the substrate to the substrate.

[0022] Optionally, the plurality of isolation openings further include a third isolation opening, and the plurality of light-emitting units further include a third light-emitting unit. At least a portion of the third light-emitting unit is located in the corresponding third isolation opening. The orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate. The edge region further includes a third edge region located on the side of the middle region facing the third isolation opening. The orthographic projection of the third edge region on the substrate is located outside the orthographic projection range of the protrusion on the substrate.

[0023] Optionally, the orthographic projection of the third edge region onto the substrate is located within the orthographic projection range of the recess onto the substrate;

[0024] Optionally, along a direction perpendicular to the surface of the substrate, the distance from the surface of the first edge region facing away from the substrate to the substrate is greater than the distance from the surface of the third edge region facing away from the substrate to the substrate.

[0025] Optionally, along the direction perpendicular to the surface of the substrate, the distance from the side of the second edge away from the substrate to the substrate is equal to the distance from the side of the third edge region away from the substrate to the substrate.

[0026] Optionally, the orthographic projection of the first isolation opening on the substrate is located within the orthographic projection range of the protrusion on the substrate, the orthographic projection of the second isolation opening on the substrate is located within the orthographic projection range of the recess on the substrate, and the orthographic projection of the third isolation opening on the substrate is located within the orthographic projection range of the recess on the substrate.

[0027] In one embodiment, the intermediate region includes a first intermediate region located between a first edge region and a second edge region, a second intermediate region located between a first edge region and a third edge region, and a third intermediate region located between a second edge region and a third edge region;

[0028] Optionally, along the direction perpendicular to the surface of the substrate, from the second edge region to the first edge region, the distance from the surface of the first intermediate region away from the substrate gradually increases.

[0029] Optionally, along the direction perpendicular to the surface of the substrate, from the third edge region to the first edge region, the distance from the surface of the second intermediate region away from the substrate gradually increases.

[0030] Optionally, along the direction perpendicular to the surface of the substrate, the distance from the surface of the third intermediate region facing away from the substrate to the substrate is equal to the distance from the surface of the second edge region facing away from the substrate to the substrate.

[0031] Optionally, along a direction perpendicular to the surface of the substrate, the distance from the surface of the third intermediate region facing away from the substrate to the substrate is equal to the distance from the surface of the third edge region facing away from the substrate to the substrate.

[0032] In one embodiment, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the substrate. The light-emitting functional layer is located on the side of the first electrode facing away from the substrate, and the second electrode is located on the side of the light-emitting functional layer facing away from the first electrode.

[0033] Optionally, the isolation structure includes a conductive material, and the second electrode is electrically connected to the isolation structure;

[0034] Optionally, the distance between the first electrode of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction of the substrate.

[0035] Optionally, the distance between the light-emitting functional layer of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the light-emitting functional layer of the second light-emitting unit and the substrate along the thickness direction of the substrate.

[0036] Optionally, the distance between the second electrode of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the second electrode of the second light-emitting unit and the substrate along the thickness direction of the substrate.

[0037] Optionally, the first light-emitting unit and the second light-emitting unit emit different colors.

[0038] In one embodiment, the light emission colors of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are different;

[0039] Optionally, the multiple packaging portions also include a third packaging portion, which is located on the side of the third light-emitting unit away from the substrate and extends to the side of the isolation structure away from the substrate.

[0040] Optionally, the encapsulation portion includes a main body portion and an extension portion that are interconnected. The main body portion is located within the isolation opening, and the extension portion is located on the side of the isolation structure away from the substrate and has a gap between it and the isolation structure.

[0041] Optionally, the orthographic projections of the extensions of adjacent packages on the substrate overlap, and the orthographic projections of the overlapping portions on the substrate are located within the orthographic projection range of the intermediate region on the substrate.

[0042] Optionally, the end of the extension of the second package near the first isolation opening does not exceed the center line of the corresponding intermediate area, and the end of the extension of the third package near the second isolation opening does not exceed the center line of the corresponding intermediate area.

[0043] Optionally, the extension of the first package portion extends at least to the side of the extension of the second package portion away from the substrate, the extension of the first package portion extends at least to the side of the extension of the third package portion away from the substrate, the extension of the second package portion extends at least to the side of the extension of the third package portion away from the substrate, or the extension of the third package portion extends at least to the side of the extension of the second package portion away from the substrate.

[0044] Optionally, the orthographic projection of the third encapsulation portion on the substrate does not overlap with the orthographic projection of the surface of the protrusion away from the substrate on the substrate;

[0045] Optionally, the orthographic projection of the third encapsulation portion on the substrate may or may not overlap with the orthographic projection of the sidewall of the protrusion on the substrate.

[0046] In one embodiment, the display panel further includes a plurality of redundant portions located within the gaps and disposed of with the same material as at least a portion of the film layer in the light-emitting unit;

[0047] Optionally, the plurality of redundant parts include a first redundant part, a second redundant part, and a third redundant part. The first redundant part is located in the gap between the extension of the first packaging part and the isolation structure and is made of the same material as at least a portion of the film layer in the first light-emitting unit. The second redundant part is located in the gap between the extension of the second packaging part and the isolation structure and is made of the same material as at least a portion of the film layer in the second light-emitting unit. The third redundant part is located in the gap between the extension of the third packaging part and the isolation structure and is made of the same material as at least a portion of the film layer in the third light-emitting unit.

[0048] Optionally, the first redundant portion extends at least to the side of the second redundant portion away from the substrate, the first redundant portion extends at least to the side of the third redundant portion away from the substrate, the second redundant portion extends at least to the side of the third redundant portion away from the substrate, or the third redundant portion extends at least to the side of the second redundant portion away from the substrate.

[0049] Optionally, the first redundant portion extends at least to the side of the extension of the second package portion away from the substrate; the first redundant portion extends at least to the side of the extension of the third package portion away from the substrate, and the second redundant portion extends at least to the side of the extension of the third package portion away from the substrate, or the third redundant portion extends at least to the side of the extension of the second package portion away from the substrate.

[0050] In one embodiment, the display panel further includes a pixel defining layer located on the side of the isolation structure close to the substrate and on the side of the insulating layer away from the substrate. The pixel defining layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion and communicating with the isolation opening. The pixel opening exposes at least a portion of the first electrode.

[0051] Optionally, the pixel-defining layer includes an inorganic insulating material.

[0052] In one embodiment, the isolation structure includes a first isolation portion and a second isolation portion, the first isolation portion being located on the side of the second isolation portion away from the substrate, and the orthographic projection of the side of the second isolation portion away from the substrate onto the substrate being within the orthographic projection range of the first isolation portion onto the substrate.

[0053] Optionally, the isolation structure further includes a third isolation portion, which is located on the side of the second isolation portion closer to the substrate. The orthographic projection of the second isolation portion on the substrate is within the orthographic projection range of the third isolation portion on the substrate, and the orthographic projection of the third isolation portion on the substrate is within the orthographic projection range of the first isolation portion on the substrate.

[0054] Optionally, the isolation structure includes a conductive material;

[0055] Optionally, the material of the first isolation part includes titanium, the material of the second isolation part includes aluminum, and the material of the third isolation part includes molybdenum;

[0056] Optionally, the second electrode overlaps with the second isolation portion, and / or the second electrode overlaps with the third isolation portion.

[0057] In one embodiment, the display panel further includes a second encapsulation layer and a third encapsulation layer, wherein the second encapsulation layer is located on the side of the first encapsulation layer opposite to the substrate, and the third encapsulation layer is located on the side of the second encapsulation layer opposite to the substrate.

[0058] Optionally, the materials of the first and third encapsulation layers include inorganic materials, and the material of the second encapsulation layer includes organic materials.

[0059] In one embodiment, the insulating layer comprises an organic insulating material;

[0060] Optionally, the orthographic projection of the side of the protrusion away from the substrate onto the substrate is located within the orthographic projection range of the side of the protrusion closer to the substrate onto the substrate.

[0061] Optionally, the protrusion and the recess are an integral structure;

[0062] Alternatively, the protrusions and recesses may be made of the same material;

[0063] Alternatively, the recess does not penetrate the insulation layer;

[0064] Optionally, multiple protrusions are spaced apart;

[0065] Optionally, the orthographic projection of the recessed portion onto the substrate is in the form of a grid.

[0066] Based on the same inventive concept, this disclosure also provides a method for manufacturing a display panel, which includes the following steps:

[0067] Provide substrate;

[0068] An insulating layer is formed on one side of the substrate, the insulating layer including protrusions and recesses;

[0069] An insulating material layer is formed on the side of the insulating layer that faces away from the substrate;

[0070] The isolation material layer is patterned to form a second isolation opening, and the orthographic projection of the second isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0071] At least a portion of the film layer of the second light-emitting unit is formed in the second isolation opening;

[0072] The isolation material layer is patterned to form a first isolation opening, and the orthographic projection of the first isolation opening on the substrate overlaps with the orthographic projection of the protrusion on the substrate.

[0073] At least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening.

[0074] In one embodiment, the step of forming an insulating layer on one side of the substrate includes:

[0075] An insulating material layer is formed on one side of the substrate.

[0076] The insulating material layer is patterned to form protrusions and depressions.

[0077] In one embodiment, after forming an insulating material layer on the side of the insulating layer facing away from the substrate, patterning the insulating material layer, before or after forming the second isolation opening, and before or after forming at least a portion of the film layer of the second light-emitting unit in the second isolation opening, the method further includes:

[0078] The isolation material layer is patterned to form a third isolation opening.

[0079] After forming at least a portion of the film layer of the second light-emitting unit in the second isolation opening, the method further includes:

[0080] At least a portion of the film layer of the third light-emitting unit is formed in the third isolation opening, and the orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0081] Optionally, at least a portion of the film layer forming the second light-emitting unit in the second isolation opening includes:

[0082] At least a portion of the film layer of the second light-emitting unit and a second encapsulation portion located on the side of the second light-emitting unit away from the substrate are formed in the second isolation opening;

[0083] The at least partial film layer forming the first light-emitting unit in the first isolation opening includes:

[0084] At least a portion of the film layer of the first light-emitting unit and a first encapsulation portion located on the side of the first light-emitting unit away from the substrate are formed in the first isolation opening;

[0085] The film layer forming at least a portion of the third light-emitting unit in the third isolation opening includes:

[0086] At least a portion of the film layer of the third light-emitting unit and a third encapsulation portion located on the side of the third light-emitting unit away from the substrate are formed in the third isolation opening.

[0087] Based on the same invention, this disclosure also discloses a display device comprising a display panel as described above, or a display panel manufactured by the method described above.

[0088] Compared with the prior art, the display panel and its manufacturing method and display device provided in this disclosure, by setting a protrusion and having the orthographic projection of the first isolation opening on the substrate overlap with the orthographic projection of the protrusion on the substrate, can increase the height of the sidewall of the isolation structure corresponding to the first isolation opening. At the same time, by setting a recess and having the orthographic projection of the second isolation opening on the substrate overlap with the orthographic projection of the recess on the substrate, can reduce the height of the sidewall of the isolation structure corresponding to the second isolation opening. This can reduce the height of the encapsulation part corresponding to the second isolation opening adjacent to the first isolation opening, thereby reducing the gap between the encapsulation part corresponding to the second isolation opening adjacent to the first isolation opening and the sidewall of the first isolation opening near the substrate. This improves the residue of cleaning solution on the bottom sidewall of the first isolation opening, enhances the bonding effect of the second electrode in the isolation structure and the light-emitting unit, and improves the display effect of the display panel. Attached Figure Description

[0089] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0090] Figure 1 This is a partial cross-sectional schematic diagram of a display panel in the prior art;

[0091] Figure 2 A partial cross-sectional view of the display panel provided in the embodiments of this application. Figure 1 ;

[0092] Figure 3 A partial cross-sectional view of the display panel provided in the embodiments of this application. Figure 2 ;

[0093] Figure 4a A partial cross-sectional view of the display panel provided in the embodiments of this application. Figure 3 ;

[0094] Figure 4b Schematic diagram four showing a partial cross-sectional view of the display panel provided in an embodiment of this application;

[0095] Figure 5 A cross-sectional view of the display panel provided in the embodiments of this application when the first isolation opening is formed. Figure 1 ;

[0096] Figure 6 A cross-sectional view of the display panel provided in the embodiments of this application when the first isolation opening is formed. Figure 1 ;

[0097] Figures 7-11 This is a schematic diagram illustrating the manufacturing process of a display panel manufacturing method provided in an embodiment of this application;

[0098] Figure 12 This is a schematic diagram of a method for manufacturing a display panel according to an embodiment of this application. Detailed Implementation

[0099] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0100] The following description, with reference to the accompanying drawings, illustrates preferred embodiments of the present invention, demonstrating its implementability. These embodiments provide a complete overview of the invention for those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0101] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of components is appropriately exaggerated in some places in the drawings.

[0102] Furthermore, the following descriptions of the embodiments of the invention are made with reference to the accompanying illustrations, illustrating specific embodiments in which the invention can be implemented. Directional terms used in this invention, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "side," are merely directional references to the accompanying drawings. Therefore, the use of directional terms is for better and clearer explanation and understanding of the invention, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0103] When a component is described as being "on" another component, the component may be placed directly on the other component; alternatively, an intermediate component may exist on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "installed to" or "connected to" another component, both can be understood as being directly "installed" or "connected" to, or indirectly "installed to" or "connected to" another component via an intermediate component.

[0104] refer to Figure 1 In the process of realizing this invention, the inventors discovered the following problems in the related technology: When manufacturing a display panel, it is necessary to pattern the isolation material layer and form a light-emitting unit and an encapsulation part 610 in the isolation opening 440 after each patterning of the isolation material layer. For example, the isolation material layer is patterned to form a third isolation opening, and a third light-emitting unit and a third encapsulation part 610B are formed in the third isolation opening. Then, the isolation material layer is patterned to form a second isolation opening, and a second light-emitting unit and a second encapsulation part 610G are formed in the second isolation opening. After that, the isolation material layer is patterned to form a first isolation opening 440R, and a first light-emitting unit and a first encapsulation part are formed. During the patterning of the first isolation opening 440R, the substrate after wet etching needs to be cleaned. However, since the second packaging part 610G and the third packaging part 610B surround the first isolation opening 440R, the step difference Q1 between the top surface of the second packaging part 610G and the third packaging part 610B and the bottom surface of the isolation material layer is large. The wet etching solution is not easy to clean and is prone to remain on the sidewall of the first isolation opening 440R, resulting in burrs on the sidewall of the first isolation opening 440R (burrs on the aluminum sidewall). This affects the bonding effect of the cathode in the isolation structure and the light-emitting unit, resulting in dark spots or uneven color of the light-emitting single element in the first isolation opening, affecting the display effect.

[0105] For the reasons mentioned above, this application provides a display panel and a manufacturing method thereof. The display panel includes a substrate 10, an insulating layer 20, an isolation structure 40 and a plurality of light-emitting units 50. The insulating layer 20 is located on one side of the substrate 10. The insulating layer 20 includes a recessed portion 21 and a protruding portion 22. The protruding portion 22 protrudes in a direction away from the substrate 10. The protruding portion 22 protrudes relative to the recessed portion 21 in a direction away from the substrate 10.

[0106] The isolation structure 40 is located on the side of the insulating layer 20 away from the substrate 10. The isolation structure 40 encloses and forms a plurality of isolation openings 44. The plurality of isolation openings 44 include a first isolation opening 44R and a second isolation opening 44G. The orthographic projection of the first isolation opening 44R on the substrate 10 overlaps with the orthographic projection of the protrusion 22 on the substrate 10. The orthographic projection of the second isolation opening 44G on the substrate overlaps with the orthographic projection of the recess 21 on the substrate.

[0107] At least a portion of the light-emitting unit 50 is located in the corresponding isolation opening 44; the plurality of light-emitting units 40 includes a first light-emitting unit 40R and a second light-emitting unit 40G, at least a portion of the first light-emitting unit 40R is located in the corresponding first isolation opening 44R, and at least a portion of the second light-emitting unit 40G is located in the corresponding second isolation opening 44G. For example, the first light-emitting unit 50R and the second light-emitting unit 50G emit different colors. For example, at least a portion of the second light-emitting unit 40G is located within the recess 21.

[0108] In this disclosure, by providing a protrusion 22, and having the orthographic projection of the first isolation opening 44R on the substrate 10 overlap with the orthographic projection of the protrusion 22 on the substrate 10, the height of the sidewall of the isolation structure corresponding to the first isolation opening 44R can be increased. At the same time, by providing a recess 21, and having the orthographic projection of the second isolation opening 44G on the substrate overlap with the orthographic projection of the recess 21 on the substrate, the height of the sidewall of the isolation structure corresponding to the second isolation opening can be reduced. This reduces the height of the encapsulation portion corresponding to the second isolation opening adjacent to the first isolation opening 44R, thereby reducing the gap between the encapsulation portion 61 corresponding to the second isolation opening adjacent to the first isolation opening 44R and the sidewall of the first isolation opening near the substrate. This improves the residue of cleaning solution on the bottom sidewall of the first isolation opening 44R, enhances the bonding effect between the isolation structure and the second electrode in the light-emitting unit, and improves the display effect of the display panel.

[0109] Next, let's combine Figures 2-6 This application describes a display panel provided in an embodiment.

[0110] The substrate 10 is a substrate or array substrate 10. The display panel or array substrate includes multiple thin-film transistors arranged in an array on the substrate or substrate. Each light-emitting unit 50 is electrically connected to at least one thin-film transistor. The substrate also has signal traces. One end of the signal trace is electrically connected to the driving chip, and the other end of the signal trace is electrically connected to the thin-film transistor. The driving chip transmits display signals to the corresponding thin-film transistors through the signal traces. The thin-film transistors conduct the corresponding light-emitting unit 50 according to the display signal, thereby illuminating the light-emitting unit 50 at the corresponding position, thus forming an image. At the same time, the driving chip can also realize the change of the display image by sending different display signals.

[0111] The display panel also includes an insulating layer 20 disposed on one side of the substrate 10. The insulating layer 20 can be a planarization layer. The insulating layer 20 includes recesses and protrusions 22. In this embodiment, a semi-transparent mask is used to pattern (etch) the insulating material layer to form the recesses 21 and protrusions 22. Therefore, in this embodiment, the recesses 21 and protrusions 22 are integrally formed structures, and the materials of the recesses 21 and protrusions 22 are the same. The insulating layer 20 may include organic insulating materials.

[0112] For example, in this embodiment, the recess 21 does not penetrate the insulating layer 20, and the orthographic projection of the recess 21 on the substrate is in the form of a grid, for example, a plurality of protrusions 22 are spaced apart.

[0113] For example, the display panel may also include a driving circuit layer, and the first electrode of the light-emitting unit can be connected to the driving circuit layer through a via penetrating the insulating layer 20. The driving circuit layer may be located between the substrate 10 and the insulating layer 20.

[0114] Furthermore, the orthographic projection of the side of the protrusion 22 away from the substrate 10 onto the substrate 10 is within the orthographic projection range of the side of the protrusion 22 near the substrate 10 onto the substrate 10. That is, in this embodiment, the cross-section of the protrusion 22 in the direction Z perpendicular to the plane of the substrate 10 is trapezoidal. The orthographic projection area of ​​the side of the protrusion 22 away from the substrate 10 onto the substrate 10 is smaller than the orthographic projection area of ​​the side of the protrusion 22 near the substrate 10 onto the substrate 10.

[0115] The display panel also includes a pixel defining layer 30 disposed on the side of the insulating layer 20 facing away from the substrate 10. The pixel defining layer 30 includes a pixel defining portion 31 and a plurality of pixel openings 32 formed by the pixel defining portion 31. At least a portion of the light-emitting unit 50 is disposed in a corresponding pixel opening 32, and at least a portion of the first electrode 51 is exposed in the pixel opening 32. Since the pixel defining layer 30 is stacked on the surface of the recessed portion 21 and the protruding portion 22 facing away from the substrate 10, a protrusion is also formed on the pixel defining layer 30 corresponding to the protruding portion 22. For example, the pixel defining layer 30 is in contact with the insulating layer 20.

[0116] For example, the material of the pixel definition layer includes inorganic insulating materials, such as one or more of silicon oxide, silicon nitride, silicon oxynitride, etc.

[0117] For example, the display panel also includes an isolation structure 40, which is located on the side of the pixel limiting layer 30 away from the substrate 10. The isolation structure 40 can isolate multiple light-emitting units 50 from each other. The isolation structure 40 defines multiple isolation openings 44, which are connected to the corresponding pixel openings 22. The orthographic projection of the pixel openings 22 on the substrate 10 is located within the orthographic projection range of the isolation openings 44 on the substrate 10. In this embodiment, the isolation structure 40 can be in the form of a grid, and the hollow areas in the grid-shaped isolation structure 40 can form the isolation openings 44.

[0118] For example, the orthographic projection of the first isolation opening 44R on the substrate is located within the orthographic projection range of the protrusion 22 on the substrate.

[0119] For example, the orthographic projection of the first isolation opening 44R on the substrate overlaps with the orthographic projection of the surface of the protrusion 22 away from the substrate on the substrate. For example, the orthographic projection of the first isolation opening 44R on the substrate is located within the range of the orthographic projection of the surface of the protrusion 22 away from the substrate on the substrate.

[0120] For example, the orthographic projection of the second isolation opening 44G on the substrate is located within the orthographic projection range of the recess 21 on the substrate.

[0121] For example, the plurality of isolation openings 44 include a first isolation opening 44R, a second isolation opening 44G, and a third isolation opening 44B.

[0122] For example, the display panel also includes multiple light-emitting units 50, at least a portion of which is located in a corresponding isolation opening 44. The multiple light-emitting units 50 include a first light-emitting unit 50R, a second light-emitting unit 50G, and a third light-emitting unit 50B. At least a portion of the first light-emitting unit 50R is located in the first isolation opening 44R, at least a portion of the second light-emitting unit 50G is located in the second isolation opening 44G, and at least a portion of the third light-emitting unit 50B is located in the third isolation opening 44B. The light-emitting colors of the first light-emitting unit 50R, the second light-emitting unit 50G, and the third light-emitting unit 50B are different; for example, the first light-emitting unit 50R emits red, the second light-emitting unit 50G emits green, and the third light-emitting unit 50B emits blue. For example, at least a portion of the third light-emitting unit 50B is located within a recess. For example, the orthographic projection of the third isolation opening 44B on the substrate overlaps with the orthographic projection of the recess 21 on the substrate. For example, the orthographic projection of the third isolation opening 44B on the substrate is within the range of the orthographic projection of the recess 21 on the substrate.

[0123] For example, the display panel also includes a first encapsulation layer 60, which is located on the side of the plurality of light-emitting units 50 away from the substrate 10. The first encapsulation layer 60 includes a plurality of encapsulation portions 61, which are located on the side of the corresponding light-emitting unit 50 away from the substrate 10 and extend to the side of the isolation structure 40 away from the substrate 10.

[0124] For example, the orthographic projections of adjacent package portions 61 on the substrate 10 have an overlapping portion 62. This design allows the isolation structure 40 to be enclosed inside the package portion 61, thereby achieving a better packaging effect.

[0125] For example, the orthographic projections of adjacent package portions 61 on the substrate 10 are spaced apart.

[0126] For example, the plurality of encapsulation portions 61 include a first encapsulation portion 61R and a second encapsulation portion 61G. Specifically, the first encapsulation portion 61R is located on the side of the first light-emitting unit 50R away from the substrate 10 and extends to the side of the isolation structure 40 away from the substrate 10; the second encapsulation portion 61G is located on the side of the second light-emitting unit 50G away from the substrate 10 and extends to the side of the isolation structure 40 away from the substrate 10.

[0127] For example, the plurality of encapsulation portions 61 also include a third encapsulation portion 61B, which is located on the side of the third light-emitting unit 50B away from the substrate 10 and extends to the side of the isolation structure 40 away from the substrate 10.

[0128] For example, the orthographic projections of the first package portion 61R and the second package portion 61G on the substrate 10 overlap. For example, the orthographic projections of the first package portion 61R and the third package portion 61B on the substrate 10 overlap. For example, the orthographic projections of the third package portion 61B and the second package portion 61G on the substrate 10 overlap.

[0129] For example, the first package portion 61R and the second package portion 61G are spaced apart by their orthogonal projections on the substrate 10. For example, the first package portion 61R and the third package portion 61B are spaced apart by their orthogonal projections on the substrate 10. For example, the third package portion 61B and the second package portion 61G are spaced apart by their orthogonal projections on the substrate 10.

[0130] It should be noted that, during the manufacturing process of the display panel of this application, after forming at least one isolation opening 44, a corresponding light-emitting unit 50 and a packaging part 61 are formed in the corresponding isolation opening 44. For example, a third isolation opening 44B is formed first, and a third light-emitting unit 50B and a third packaging part 61B are formed in the third isolation opening 44B. Then, a second isolation opening 44G is formed, and a second light-emitting unit 50G and a second packaging part 61G are formed in the second isolation opening 44G. Finally, a first isolation opening 44R is formed, and a first light-emitting unit 50R and a first packaging part 61R are formed in the first isolation opening 44R. It should be noted that the formation order of the third isolation opening 44B and the second isolation opening 44G can be as follows: the third isolation opening 44B, the third light-emitting unit 50B, and the third encapsulation part 61B can be formed first, followed by the formation of the second isolation opening 44G, the second light-emitting unit 50G, and the second encapsulation part 61G; alternatively, the second isolation opening 44G, the second light-emitting unit 50G, and the second encapsulation part 61G can be formed first, followed by the formation of the third isolation opening 44B, the third light-emitting unit 50B, and the third encapsulation part 61B; or the second isolation opening 44G and the third isolation opening 44B can be formed simultaneously, followed by the formation of the third light-emitting unit 50B and the third encapsulation part 61B, and then the formation of the second light-emitting unit 50G and the second encapsulation part 61G; or the second light-emitting unit 50G and the second encapsulation part 61G can be formed first, followed by the formation of the third light-emitting unit 50B and the third encapsulation part 61B. In any case, the first isolation opening 44R is formed after the third encapsulation part 61B and the second encapsulation part 61G are formed.

[0131] Since the first isolation opening 44R in this embodiment is manufactured after the third packaging part 61B and the second packaging part 61G are manufactured, and the third packaging part 61B and the second packaging part 61G surround the first isolation opening, when cleaning the etching solution in the first isolation opening 44R, the step difference between the side surface of the second packaging part 61G and the third packaging part 61B facing away from the substrate and the side surface of the isolation structure close to the substrate increases. This makes it difficult to clean the wet etching solution, and it is easy to leave residue on the sidewall of the first isolation opening 44R. This results in burrs forming on the sidewall of the first isolation opening 44R (burrs forming on the aluminum sidewall), which affects the bonding effect of the cathode in the isolation structure and the light-emitting unit, resulting in dark spots or uneven color of the light-emitting single element in the first isolation opening, affecting the display effect.

[0132] Therefore, this application provides an insulating layer consisting of a recessed portion 21 and a protruding portion 22. The protruding portion 22 protrudes Z-shapedly from the recessed portion 21 in a direction away from the substrate. The orthographic projection of the first isolation opening 44R on the substrate overlaps with the orthographic projection of the protruding portion on the substrate. The orthographic projection of the second isolation opening 44G on the substrate overlaps with the orthographic projection of the recessed portion on the substrate. The orthographic projection of the third isolation opening 44B on the substrate overlaps with the orthographic projection of the recessed portion on the substrate. Furthermore, the orthographic projection of the first isolation opening 44R on the substrate is located within the orthographic projection range of the protruding portion 22 on the substrate. The orthographic projection of the second isolation opening 44G on the substrate overlaps with the orthographic projection of the protruding portion 22 on the substrate. The projection of the recess 21 onto the substrate is within the orthographic projection range of the third isolation opening 44B onto the substrate. This design can raise the height of the sidewall of the isolation structure corresponding to the first isolation opening 44R, and lower the height of the third encapsulation part 61B and the second encapsulation part 61G. This reduces the step difference between the side surface of the second encapsulation part 61G and the third encapsulation part 61B away from the substrate and the side of the sidewall of the isolation structure corresponding to the first isolation opening 44R close to the substrate, improving the residue of cleaning solution on the bottom sidewall of the first isolation opening and enhancing the display effect of the display panel.

[0133] In one embodiment, the orthographic projection of the second package portion 61G on the substrate does not overlap with the orthographic projection of the surface of the protrusion 22 away from the substrate on the substrate, and / or, the orthographic projection of the third package portion 61B on the substrate does not overlap with the orthographic projection of the surface of the protrusion 22 away from the substrate on the substrate. This design can limit the height of the second package portion and the third package portion, and reduce the step difference between the second package portion and the third package portion and the sidewall of the isolation structure corresponding to the first isolation opening.

[0134] For example, the orthographic projection of the first package portion 61R on the substrate overlaps with the orthographic projection of the protrusion 22 on the substrate. For example, the orthographic projection of the second package portion 61G on the substrate overlaps with the orthographic projection of the recess 21 on the substrate, and / or, the orthographic projection of the third package portion 61B on the substrate overlaps with the orthographic projection of the recess 21 on the substrate.

[0135] In an optional embodiment, the orthographic projection of the second encapsulation portion 61G on the substrate overlaps with the orthographic projection of the sidewall of the protrusion 22 on the substrate, and / or, the orthographic projection of the third encapsulation portion 61B on the substrate overlaps with the orthographic projection of the sidewall of the protrusion 22 on the substrate. This design can further limit the height of the second and third encapsulation portions, ensure the encapsulation effect, and ensure that the step difference between the second and third encapsulation portions and the sidewall of the isolation structure corresponding to the first isolation opening is small.

[0136] In another alternative embodiment, the orthographic projection of the second encapsulation portion 61G on the substrate does not overlap with the orthographic projection of the sidewall of the protrusion 22 on the substrate, and / or the orthographic projection of the third encapsulation portion 61B on the substrate does not overlap with the orthographic projection of the sidewall of the protrusion 22 on the substrate. This design can further reduce the height of the first encapsulation portion and the second encapsulation portion, so that the step difference between the second encapsulation portion and the third encapsulation portion and the sidewall of the isolation structure corresponding to the first isolation opening is smaller.

[0137] For example, the step difference Q2 between the surface of the third encapsulation part 61B and the second encapsulation part 61R facing away from the substrate 10 and the sidewall of the first isolation opening near the substrate is equal to the step difference Q3 between the surface of the isolation structure away from the substrate 10 and the surface of the isolation structure near the substrate 10. This further reduces the step difference between the surface of the second and third encapsulation parts facing away from the substrate and the sidewall of the isolation structure corresponding to the first isolation opening near the substrate, improving the residue of cleaning solution on the bottom sidewall of the first isolation opening 44R and enhancing the display effect of the display panel.

[0138] refer to Figure 2 and Figure 3 In one embodiment, the isolation structure 40 includes a middle region 45 and an edge region 46 on the side of the middle region 45 facing the isolation opening 44. Optionally, the edge region 46 includes a first edge region 46a of the middle region 45 facing the first isolation opening 44R and a second edge region 46b of the middle region 45 facing the second isolation opening 44G.

[0139] Optionally, the edge region 46 includes a first edge region 46a of the middle region 45 facing the first isolation opening 44R, a second edge region 46b of the middle region 45 facing the second isolation opening 44G, and a third edge region 46c of the middle region 45 facing the third isolation opening 44B.

[0140] Wherein, the orthographic projection of the first edge region 46a on the substrate 10 is within the range of the orthographic projection of the protrusion 22 on the substrate 10; the orthographic projection of the second edge region 46b on the substrate 10 is outside the range of the orthographic projection of the protrusion 22 on the substrate 10, for example, the orthographic projection of the second edge region 46b on the substrate 10 is within the range of the orthographic projection of the recess 21 on the substrate 10; and / or, the orthographic projection of the third edge region 46c on the substrate 10 is outside the range of the orthographic projection of the protrusion 22 on the substrate 10, for example, the orthographic projection of the third edge region 46c on the substrate 10 is within the range of the orthographic projection of the recess 21 on the substrate 10; therefore, the first edge region 46a encloses a shape... The orthographic projection of the first isolation opening on the substrate is located within the orthographic projection range of the protrusion on the substrate. The orthographic projection of the second isolation opening formed by the second edge region 46b on the substrate is located outside the orthographic projection range of the protrusion on the substrate. For example, the orthographic projection of the second isolation opening formed by the second edge region 46b on the substrate is located within the orthographic projection range of the recess 21 on the substrate. The orthographic projection of the third isolation opening formed by the third edge region 46c on the substrate is located outside the orthographic projection range of the protrusion on the substrate. For example, the orthographic projection of the third isolation opening formed by the third edge region 46c on the substrate is located within the orthographic projection range of the recess 21 on the substrate. Since the isolation material layer forming the isolation structure 40 is stacked on the side surface of the pixel limiting layer 30 facing away from the substrate 10, the first edge region 46a protrudes relative to the second edge region 46b and / or the third edge region 46c. That is, the height of the first edge region 46a is higher than the height of the second edge region 46b, and / or the height of the first edge region 46a is higher than the height of the third edge region 46c, and / or the height of the third edge region 46c is equal to the height of the second edge region 46b. Specifically, the distance from the side surface of the first edge region 46a facing away from the substrate 10 to the substrate 10 is greater than the distance from the side surface of the second edge region 46b facing away from the substrate 10 to the substrate 10, the distance from the side surface of the first edge region 46a facing away from the substrate 10 to the substrate 10 is greater than the distance from the side surface of the third edge region 46c facing away from the substrate 10 to the substrate 10, and the distance from the side surface of the second edge region 46b facing away from the substrate 10 to the substrate 10 is equal to the distance from the side surface of the third edge region 46c facing away from the substrate 10 to the substrate 10.

[0141] refer to Figure 5Furthermore, the height of the first edge region 46a is higher than the height of the middle region 45. Specifically, the distance from the surface of the first edge region 46a facing away from the substrate 10 to the substrate 10 is greater than the distance from the surface of the middle region 45 facing away from the substrate 10 to the substrate 10. The orthographic projection of the overlapping portion 62 on the substrate 10 is located within the orthographic projection range of the middle region 45 on the substrate 10. This can also be understood as the overlapping portion 62 being located on the side of the middle region 45 facing away from the substrate 10. Therefore, the encapsulation portion 61 will not extend from the edge region 46 on one side of the middle region 45 through the middle region 45 to the edge region 46 on the other side of the middle region 45. That is, the third encapsulation portion 61B is close to the first edge region 46. One end of the isolation opening 44R is located on the side of the middle area away from the substrate 10, and the end of the second package 61G near the first isolation opening 44R is also located on the side of the middle area away from the substrate 10. This design can reduce the height of the third package 61B and the second package 61G. Specifically, it can be understood that the step difference Q2 between the surface of the third package 61B away from the substrate 10 and the surface of the first edge area 46a near the substrate 10 is reduced, and the step difference between the surface of the second package 61G away from the substrate 10 and the surface of the first edge area 46a near the substrate 10 is reduced, thereby improving the residue of cleaning solution and enhancing the display effect of the display panel.

[0142] For example, the intermediate region 45 includes a first intermediate region 45a located between the first edge region 46a and the second edge region 46b, and a second intermediate region 45b located between the first edge region 46a and the third edge region 46c.

[0143] For example, the intermediate region 45 includes a first intermediate region 45a located between a first edge region 46a and a second edge region 46b, a second intermediate region 45b located between the first edge region 46a and a third edge region 46c, and a third intermediate region 45c located between the second edge region 46b and the third edge region 46c.

[0144] Since the height of the first edge region 46a is greater than that of the second edge region 46b and / or the third edge region 46c, the heights of the first intermediate region 45a and the second intermediate region 45b are gradually changing and both are less than the height of the first edge region 46a. Specifically, in the direction perpendicular to the surface of the substrate 10, from the second edge region 46b to the first edge region 46a, the distance from the surface of the first intermediate region 45a away from the substrate 10 to the substrate 10 gradually increases. In the direction from the third edge region 46c to the first edge region 46a, the distance from the surface of the second intermediate region 45b away from the substrate 10 to the substrate 10 gradually increases. Since the height of the third edge region 46c is equal to the height of the second edge region 46b, in the direction perpendicular to the surface of the substrate 10 (Z direction), the distance from the surface of the third intermediate region 45c away from the substrate 10 to the substrate 10 is equal to the distance from the surface of the second edge region 46b away from the substrate 10 to the substrate 10, and the distance from the surface of the third intermediate region 45c away from the substrate 10 to the substrate 10 is equal to the distance from the surface of the third edge region 46c away from the substrate 10 to the substrate 10.

[0145] refer to Figure 2 and Figure 3 In one embodiment, the encapsulation portion 61 includes a main body portion 611 and an extension portion 612 connected to each other. The main body portion 611 is located within the isolation opening 44, and the extension portion 612 is located on the side surface of the isolation structure 40 facing away from the substrate 10, with a gap between the extension portion 612 and the isolation structure 40. In the figure, the main body portion 611 and the extension portion 612 are distinguished by the dashed line W. Furthermore, the orthographic projections of the extension portions 612 of adjacent encapsulation portions 61 on the substrate 10 have an overlapping portion 62. That is, the extension portions 612 of adjacent encapsulation portions 61 overlap each other. In this way, the isolation structure 40 can be enclosed inside the encapsulation portion 61, thereby achieving a better encapsulation effect.

[0146] In this application, the manufacturing order of the multiple packaging parts 61 is different, such as manufacturing the third packaging part 61B first, then manufacturing the second packaging part 61G, and finally manufacturing the first packaging part 61R.

[0147] For example, the extension 612 of the first package portion 61R extends at least to the side of the second package portion 61G that is away from the substrate 10, the extension 612 of the first package portion 61R extends at least to the side of the third package portion 61B that is away from the substrate 10, and the extension 612 of the second package portion 61G extends at least to the side of the third package portion 61B that is away from the substrate 10.

[0148] For example, the second packaging section 61G is manufactured first, then the third packaging section 61B is manufactured, and finally the first packaging section 61R is manufactured.

[0149] For example, the extension 612 of the first package portion 61R extends at least to the side of the second package portion 61G that is away from the substrate 10, the extension 612 of the first package portion 61R extends at least to the side of the third package portion 61B that is away from the substrate 10, and the extension 612 of the third package portion 61B extends at least to the side of the second package portion 61G that is away from the substrate 10.

[0150] refer to Figure 6 In an optional embodiment, to further reduce the step difference Q2 between the side surface of the third package portion 61B facing away from the substrate 10 and the side surface of the first edge region 46a near the substrate 10, the end of the second package portion near the first isolation opening is not more than the centerline m2 of the corresponding intermediate region (the intermediate region between the first isolation opening and the second isolation opening), and the end of the third package portion near the first isolation opening is not more than the centerline m1 of the corresponding intermediate region (the intermediate region between the first isolation opening and the third isolation opening). In other words, the end of the extension of the second package portion near the first isolation opening is not more than the centerline m2 of the corresponding intermediate region, and the extension of the third package portion... The end of the extension near the first isolation opening does not exceed the centerline m1 of the corresponding middle area. This design can further reduce the step difference Q2 between the side surface of the third package portion 61B away from the substrate 10 and the side surface of the first edge region 46a near the substrate 10. When the projection of the extension portion on the substrate does not overlap with the orthographic projection of the sidewall of the protrusion portion on the substrate, the step difference Q2 between the side surface of the third package portion 61B away from the substrate 10 and the side surface of the first edge region 46a near the substrate 10 can be equal to the step difference Q3 between the side surface of the first edge region 46a away from the substrate 10 and the side surface of the first edge region 46a near the substrate 10.

[0151] refer to Figure 2 In one optional embodiment, the light-emitting unit 50 includes a first electrode 51, a light-emitting functional layer 52, and a second electrode 53, which may be sequentially stacked along a direction away from the substrate. The light-emitting functional layer 52 is located on the side of the first electrode 51 facing away from the substrate 10, and the second electrode is located on the side of the light-emitting functional layer 52 facing away from the first electrode 51. For example, the isolation structure 40 includes a conductive material, and the second electrode 53 is electrically connected to the isolation structure 40. For example, the first electrode 51 is in contact with the insulating layer 20.

[0152] For example, due to the presence of the protrusions and recesses, the distance between the first electrode of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the first electrode of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the first electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the first electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is equal to the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate.

[0153] For example, the distance between the light-emitting functional layer 52 of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the light-emitting functional layer 52 of the second light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the light-emitting functional layer 52 of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the light-emitting functional layer 52 of the third light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the light-emitting functional layer 52 of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is equal to the distance between the light-emitting functional layer 52 of the second light-emitting unit and the substrate along the thickness direction Z of the substrate.

[0154] For example, the distance between the second electrode 53 of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the second electrode 53 of the second light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the second electrode 53 of the first light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the second electrode 53 of the third light-emitting unit and the substrate along the thickness direction Z of the substrate, and / or, the distance between the second electrode 53 of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is equal to the distance between the second electrode 53 of the second light-emitting unit and the substrate along the thickness direction Z of the substrate.

[0155] For example, the distance between the pixel opening corresponding to the first light-emitting unit and the substrate along the thickness direction Z is greater than the distance between the pixel opening corresponding to the second light-emitting unit and the substrate along the thickness direction Z, and / or, the distance between the pixel opening corresponding to the first light-emitting unit and the substrate along the thickness direction Z is greater than the distance between the pixel opening corresponding to the third light-emitting unit and the substrate along the thickness direction Z, and / or, the distance between the pixel opening corresponding to the third light-emitting unit and the substrate along the thickness direction Z is equal to the distance between the pixel opening corresponding to the second light-emitting unit and the substrate along the thickness direction Z.

[0156] For example, the distance between the first isolation opening and the substrate along the thickness direction Z of the substrate is greater than the distance between the second isolation opening and the substrate along the thickness direction Z of the substrate, and / or, the distance between the first isolation opening and the substrate along the thickness direction Z of the substrate is greater than the distance between the third isolation opening and the substrate along the thickness direction Z of the substrate, and / or, the distance between the third isolation opening and the substrate along the thickness direction Z of the substrate is equal to the distance between the second isolation opening and the substrate along the thickness direction Z of the substrate.

[0157] For example, the first light-emitting unit can be the last light-emitting unit to be manufactured.

[0158] For example, the distance between the first electrode of the light-emitting unit manufactured later in the manufacturing sequence and the substrate along the thickness direction Z is greater than the distance between the first electrode of the light-emitting unit manufactured earlier in the manufacturing sequence and the substrate along the thickness direction Z.

[0159] For example, the distance between the light-emitting functional layer of the light-emitting unit manufactured later in the process and the substrate along the thickness direction Z is greater than the distance between the light-emitting functional layer of the light-emitting unit manufactured earlier in the process and the substrate along the thickness direction Z.

[0160] For example, the distance between the second electrode of the light-emitting unit manufactured later in the manufacturing sequence and the substrate along the thickness direction Z is greater than the distance between the second electrode of the light-emitting unit manufactured earlier in the manufacturing sequence and the substrate along the thickness direction Z.

[0161] For example, the distance between the pixel opening of the light-emitting unit manufactured later in the manufacturing sequence and the substrate along the thickness direction Z is greater than the distance between the pixel opening of the light-emitting unit manufactured earlier in the manufacturing sequence and the substrate along the thickness direction Z.

[0162] For example, the distance between the isolation opening of the light-emitting unit manufactured later in the manufacturing sequence and the substrate along the thickness direction Z is greater than the distance between the isolation opening of the light-emitting unit manufactured earlier in the manufacturing sequence and the substrate along the thickness direction Z.

[0163] For example, the distance between the first electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the light-emitting functional layer of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the light-emitting functional layer of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the second electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the second electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the pixel opening corresponding to the third light-emitting unit and the substrate along the thickness direction Z of the substrate is greater than the distance between the pixel opening corresponding to the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the third isolation opening and the substrate along the thickness direction Z of the substrate is greater than the distance between the second isolation opening and the substrate along the thickness direction Z of the substrate. For example, the depth of the recess of the third light-emitting unit is less than the depth of the recess of the second light-emitting unit. For example, the third light-emitting unit is fabricated after the second light-emitting unit.

[0164] For example, the distance between the first electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is less than the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the light-emitting functional layer of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is less than the distance between the light-emitting functional layer of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the second electrode of the third light-emitting unit and the substrate along the thickness direction Z of the substrate is less than the distance between the second electrode of the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the pixel opening corresponding to the third light-emitting unit and the substrate along the thickness direction Z of the substrate is less than the distance between the pixel opening corresponding to the second light-emitting unit and the substrate along the thickness direction Z of the substrate. For example, the distance between the third isolation opening and the substrate along the thickness direction Z of the substrate is less than the distance between the second isolation opening and the substrate along the thickness direction Z of the substrate. For example, the depth of the recess in the third light-emitting unit is greater than the depth of the recess in the second light-emitting unit. For example, the third light-emitting unit is fabricated before the second light-emitting unit.

[0165] For example, the first electrode 51 may be an anode, and the second electrode 53 may be a cathode. The light-emitting functional layer 52 includes an emitting layer (EML). For example, the light-emitting functional layer 52 may also include at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron-blocking layer (EBL) located between the anode and the emitting layer (EML), and at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole-blocking layer (HBL) located between the cathode and the emitting layer (EML).

[0166] refer to Figure 2 The display panel also includes multiple redundant portions 54. The redundant portions 54 are located within the gaps and are made of the same material and / or in the same layer as at least a portion of the film layers in the light-emitting unit 50 (e.g., the light-emitting function and the second electrode of the light-emitting unit 50). The orthographic projection of the redundant portions 54 on the substrate 10 is located within the orthographic projection range of the extension 612 on the substrate 10. Therefore, the orthographic projections of adjacent redundant portions 54 on the substrate 10 will also partially overlap. It should be noted that the material layer of the second electrode 53 and the light-emitting function material layer of the light-emitting unit 50 in this application are vapor-deposited on the entire surface during fabrication. Therefore, at least a portion of the second electrode 53 material layer and the light-emitting function material layer will be vapor-deposited on the side of the isolation structure 40 away from the substrate 10, thereby forming the redundant portions 54.

[0167] For example, the multiple redundancy units 54 include a first redundancy unit 54R and a second redundancy unit 54G.

[0168] For example, the plurality of redundancy units 54 include a first redundancy unit 54R, a second redundancy unit 54G, and a third redundancy unit 54B.

[0169] The first redundancy portion 54R is located in the gap between the extension 612 of the first packaging portion 61R and the isolation structure 40 and is made of the same material and / or in the same layer as at least a portion of the film layer in the first light-emitting unit 50R (e.g., the light-emitting function of the first light-emitting unit 50R and the second electrode), and / or the second redundancy portion 54G is located in the gap between the extension 612 of the second packaging portion 61G and the isolation structure 40 and is made of the same material and / or in the same layer as at least a portion of the film layer in the second light-emitting unit 50G (e.g., the light-emitting function of the second light-emitting unit 50G and the second electrode), and / or the third redundancy portion 54B is located in the gap between the extension 612 of the third packaging portion 61B and the isolation structure 40 and is made of the same material and / or in the same layer as at least a portion of the film layer in the third light-emitting unit 50B (e.g., the light-emitting function of the third light-emitting unit 50B and the second electrode).

[0170] The process involves fabricating the third light-emitting unit 50B first, then the second light-emitting unit 50G, and finally the first light-emitting unit 50R; or, the second light-emitting unit 50G is fabricated first, then the third light-emitting unit 50B is fabricated, and finally the first light-emitting unit 50R is fabricated. For example, the first redundant portion 54R extends at least to the side of the second redundant portion 54G away from the substrate 10; the first redundant portion 54R extends at least to the side of the third redundant portion 54B away from the substrate 10; the second redundant portion 54G extends at least to the side of the third redundant portion 54B away from the substrate 10; or, the third redundant portion 54B extends at least to the side of the second redundant portion 54G away from the substrate 10.

[0171] For example, when each light-emitting unit 50 is fabricated, each encapsulation portion 61 is fabricated simultaneously. Therefore, the first redundant portion 54R extends at least to the side of the extension 612 of the second encapsulation portion 61G away from the substrate 10; the first redundant portion 54R extends at least to the side of the extension 612 of the third encapsulation portion 61B away from the substrate 10; the second redundant portion 54G extends at least to the side of the extension 612 of the third encapsulation portion 61B away from the substrate 10; or, the third redundant portion 54B extends at least to the side of the extension 612 of the second encapsulation portion 61G away from the substrate 10.

[0172] refer to Figure 4bIn one optional embodiment, the isolation structure 40 includes a first isolation portion 43 and a second isolation portion 42 stacked together. The first isolation portion 43 is located on the side of the second isolation portion 42 away from the substrate 10. The orthographic projection of the side of the second isolation portion 42 away from the substrate 10 onto the substrate 10 is within the orthographic projection range of the first isolation portion 43 onto the substrate 10. That is, the first isolation portion 43 protrudes from the second isolation portion 42 toward the isolation opening 44. This design allows for the direct deposition of a portion of the material of the light-emitting unit (e.g., the material of the light-emitting unit 50 and the material of the second electrode 53) over the entire surface. The second isolation portion 42 can block at least a portion of the material used to prepare the light-emitting unit 50, thereby isolating the material of the light-emitting unit 50 between adjacent sub-pixels. This facilitates the formation of multiple spaced light-emitting units 50 located in different isolation openings 44. As a result, it is not necessary to set a high-precision mask when preparing the light-emitting unit 50 of the display panel. For example, it is not necessary to set a high-precision metal mask (FMM) when depositing the material of the light-emitting unit 50. This can effectively reduce the production cost of the display panel. For example, the projected area of ​​the second isolation portion 42 on the substrate 10 away from the substrate 10 is smaller than the projected area of ​​the first isolation portion 43 on the substrate 10. For example, the cross-section of the isolation structure 40 perpendicular to the substrate is T-shaped.

[0173] In some alternative embodiments, the material of the isolation structure 40 may include a conductive material, and the second electrode 53 may be electrically connected to the isolation structure 40, so that the second electrodes 53 of adjacent light-emitting units 50 can be electrically connected through the isolation structure 40 to facilitate control of the second electrode 53.

[0174] Optionally, the second electrode 53 can be connected to the second isolation portion 42, so that the second electrodes 53 of adjacent sub-pixels can be electrically connected through the first isolation portion 43.

[0175] refer to Figure 4aIn an optional embodiment, the isolation structure 40 includes a first isolation portion 43, a second isolation portion 42, and a third isolation portion 41 stacked together. The first isolation portion 43 is located on the side of the second isolation portion 42 facing away from the substrate 10, and the third isolation portion 41 is located on the side of the second isolation portion 42 close to the substrate 10. The orthographic projection of the second isolation portion 42 onto the substrate 10 is within the orthographic projection range of the first isolation portion 43 onto the substrate 10, and the orthographic projection of the second isolation portion 42 onto the substrate 10 is within the orthographic projection range of the third isolation portion 41 onto the substrate 10. The orthographic projection of the first isolation portion 43 onto the substrate 10 is located within the orthographic projection area of ​​the first isolation portion 43 onto the substrate 10. For example, the first isolation portion 43 protrudes from the second isolation portion 42 toward the isolation opening 44, and / or the third isolation portion 41 protrudes from the second isolation portion 42 toward the isolation opening 44, so that the conductive portion can have a larger area and facilitate overlap with the second electrode 53, thereby facilitating the overlap between the second electrode 53 and the isolation structure 40. In actual production, some of the light-emitting material will come into contact with the sidewall of the first isolation portion 43, which is not specifically limited here. For example, the orthographic projection area of ​​the second isolation portion 42 onto the substrate 10 is less than or equal to the orthographic projection area of ​​the third isolation portion 41 onto the substrate 10. For example, the cross-section of the isolation structure 40 perpendicular to the substrate is I-shaped.

[0176] In an optional embodiment, the second electrode 53 may overlap with the third isolation portion 41, and / or the second electrode 53 may overlap with the second isolation portion 42, and / or the second electrode 53 may overlap with both the third isolation portion 41 and the second isolation portion 42 simultaneously.

[0177] Optionally, the isolation structure 40 includes a conductive material, such as a metal, for example, the material of the first isolation portion 43 includes titanium, the material of the second isolation portion 42 includes aluminum, and the material of the third isolation portion 41 includes molybdenum.

[0178] Referring to FIG4, in one embodiment, the display panel further includes a second encapsulation layer 70, wherein the second encapsulation layer 70 is located on the side of the first encapsulation layer 60 away from the substrate 10.

[0179] For example, the display panel also includes a third encapsulation layer 80, which is located on the side of the second encapsulation layer 70 away from the substrate 10.

[0180] Unlike the first encapsulation layer 60, the second encapsulation layer 70 can be a full-surface structure, simultaneously covering multiple encapsulation portions 61. The first encapsulation layer 60, the second encapsulation layer 70, and the third encapsulation layer 80 can together constitute a thin-film encapsulation structure, thereby further improving the encapsulation reliability of the display panel.

[0181] Optionally, the second encapsulation layer 70 includes an organic material, and / or the first encapsulation layer 60 includes an inorganic material, and / or the third encapsulation layer 80 includes an inorganic material, thus forming an overall encapsulation structure with two inorganic layers sandwiching an organic layer. The inorganic layer typically has good electrical insulation properties and a certain mechanical strength, while the organic layer has flexibility and a certain degree of adhesion. Combining these two can form an effective barrier to prevent external moisture, oxygen, and other harmful substances from penetrating into the display panel. This composite encapsulation structure can significantly improve the encapsulation effect of the display panel and extend its service life and stability.

[0182] Reference 5- Figure 12 Based on the same inventive concept, this disclosure provides a method for manufacturing a display panel, which can be used to manufacture the display panel provided in the above embodiments. The manufacturing method includes the following steps:

[0183] S10: Provide substrate 10;

[0184] Multiple thin-film transistors can also be formed on the substrate 10 using an array process;

[0185] S20: Reference Figure 7 An insulating layer 20 is formed on one side of the substrate 10. The insulating layer 20 includes a protrusion 22 and a recess 21.

[0186] The step of forming an insulating layer on one side of a substrate includes: forming an insulating material layer on one side of the substrate, patterning the insulating material layer to form protrusions and recesses.

[0187] Specifically, an insulating material layer is formed on one side of the substrate 10; a semi-transparent mask is used to pattern (or etch) the insulating material layer, thereby forming a recess 21 and a protrusion 22.

[0188] At least one layer of conductive material is deposited on one side of the substrate 10, and the formed conductive material layer is patterned to form a plurality of first electrodes 51 on the surface of the substrate 10, wherein the orthographic projection of the first electrode 51 corresponding to the first light-emitting unit on the substrate 10 is located within the orthographic projection range of the protrusion 22 on the substrate 10.

[0189] It should be noted that the following steps are included after step S20:

[0190] refer to Figure 8 A pixel defining material layer 300 covering the first electrode 51 is deposited on the substrate 10 to form a pixel defining layer 20, wherein at least a portion of the pixel defining layer 20 covers the protrusion 22.

[0191] S30: An insulating material layer 400 is formed on the side of the insulating layer away from the substrate;

[0192] refer to Figure 9 In this step, an isolation material layer 400 can be formed on the side of the pixel limiting layer away from the substrate. In this step, the isolation material layer includes a third isolation material layer 410, a second isolation material layer 420 and a first isolation material layer 430 stacked sequentially along the direction Z away from the substrate 10. The first isolation material layer 430 is located on the side of the second isolation material layer 420 away from the substrate, and the third isolation material layer 410 is located on the side of the second isolation material layer 420 close to the substrate 10. For example, the first isolation material layer includes a titanium isolation material layer, the second isolation material layer includes an aluminum isolation material layer and the third isolation material layer includes a molybdenum isolation material layer.

[0193] S40: The isolation material layer is patterned to form a second isolation opening 44G, and the orthographic projection of the second isolation opening 44G on the substrate overlaps with the orthographic projection of the recess 22 on the substrate.

[0194] refer to Figure 11 This step specifically includes patterning at least a portion of the isolation material layer above the first electrode 51 corresponding to the second light-emitting unit, for example, by etching the isolation material layer through an etching process, which may include wet etching and / or dry etching, to form a second isolation opening 44G, and the second isolation opening 44G exposes at least a portion of the first electrode 51 corresponding to the second light-emitting unit 40G, wherein the orthographic projection of the second isolation opening 44G on the substrate overlaps with the orthographic projection of the recess 21 on the substrate, for example, the orthographic projection of the second isolation opening 44G on the substrate 10 is located within the orthographic projection range of the recess 21 on the substrate 10.

[0195] S50: At least a portion of the film layer of the second light-emitting unit is formed in the second isolation opening. For example, at least a portion of the film layer of the second light-emitting unit may include the light-emitting functional layer of the second light-emitting unit and the second electrode.

[0196] It should be noted that step S50 includes: forming at least a portion of the film layer of the second light-emitting unit and a second encapsulation portion located on the side of the second light-emitting unit away from the substrate in the second isolation opening.

[0197] After step S40 and before step S50, the manufacturing method further includes: patterning the pixel defining material above the first electrode 51 corresponding to the second light-emitting unit to form a second pixel opening 22 communicating with the second isolation opening 44G, wherein the second pixel opening 22 exposes at least a portion of the first electrode 51 corresponding to the second light-emitting unit.

[0198] A second light-emitting material layer, a second electrode 53, and a first encapsulation material layer are deposited inside the second isolation opening 44G and on the side of the isolation material layer facing away from the substrate 10. The second light-emitting material layer, the second electrode 53, and the first encapsulation material layer on the side of the isolation material layer facing away from the substrate 10 and the side of the isolation material layer facing away from the substrate 10 are removed to obtain a second light-emitting unit 50G and a second encapsulation portion 61G, wherein the edge of the extension portion 612 of the second encapsulation portion 61G is located in the middle region 45.

[0199] refer to Figure 10 In an optional embodiment, before step S40, the manufacturing method further includes: patterning the isolation material layer to form a third isolation opening, wherein the orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate;

[0200] In this step, at least a portion of the isolation material layer above the first electrode 51 corresponding to the third light-emitting unit is patterned, for example, by an etching process. The etching process may include wet etching and / or dry etching to form a third isolation opening 44B. The third isolation opening 44B exposes at least a portion of the first electrode 51 corresponding to the third light-emitting unit. The orthographic projection of the third isolation opening 44B on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0201] At least a portion of the film layer of the third light-emitting unit is formed in the third isolation opening.

[0202] It should be noted that this step specifically includes: forming at least a portion of the film layer of the third light-emitting unit in the third isolation opening and a third encapsulation portion located on the side of the third light-emitting unit away from the substrate.

[0203] This step specifically includes: patterning the pixel-defining material layer above the first electrode 51 corresponding to the third light-emitting unit to form a third pixel opening 22 that communicates with the third isolation opening 44B, and the third pixel opening 22 exposes at least part of the first electrode 51 corresponding to the third light-emitting unit.

[0204] A third light-emitting material layer, a second electrode 53, and a first encapsulation material layer are deposited within the third isolation opening 44B and on the side of the isolation material layer facing away from the substrate 10. The third light-emitting material layer, the second electrode 53, and the first encapsulation material layer on the side of the isolation material layer facing away from the substrate 10 are then removed to obtain a third light-emitting unit 50B and a third encapsulation portion 61B, wherein the edge of the extension portion 612 of the third encapsulation portion 61B is located in the middle region 45.

[0205] In an optional embodiment, after step S50, the method further includes: patterning the isolation material layer to form a third isolation opening, wherein the orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0206] At least a portion of the film layer of the third light-emitting unit is formed in the third isolation opening. For example, at least a portion of the film layer of the third light-emitting unit may include the light-emitting functional layer of the third light-emitting unit and the second electrode.

[0207] In another optional embodiment, step S40 forms a third isolation opening while forming the second isolation opening, that is, the isolation material layer is patterned to form the second isolation opening and the third isolation opening. The orthographic projection of the second isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate, and the orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate.

[0208] Before or after step S50, the method further includes: forming at least a portion of the film layer of the third light-emitting unit in the third isolation opening.

[0209] In the above optional embodiments, the second isolation opening 44G and the third isolation opening 44B can be formed simultaneously, or the second isolation opening 44G can be formed before or after the third isolation opening 44B is formed. For example, the second isolation opening 44G and the third isolation opening 44B are formed before the first isolation opening is formed.

[0210] S60: Pattern the insulating material layer to form the first insulating opening.

[0211] refer to Figure 5 and Figure 6 At least a portion of the isolation material layer above the second electrode 53 corresponding to the first light-emitting unit is patterned, for example by an etching process, which may include wet etching and / or dry etching, to form a first isolation opening 44R, and the first isolation opening 44R exposes at least a portion of the first electrode 51 corresponding to the first light-emitting unit; wherein the orthographic projection of the first isolation opening 44R on the substrate 10 is located within the orthographic projection range of the protrusion 22 on the substrate 10, and the orthographic projection of the first isolation opening on the substrate overlaps with the orthographic projection of the protrusion on the substrate.

[0212] S70: At least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening; for example, at least a portion of the film layer of the first light-emitting unit may include the light-emitting functional layer of the first light-emitting unit and the second electrode.

[0213] It should be noted that step S70 includes: forming at least a portion of the film layer of the first light-emitting unit in the first isolation opening and a first encapsulation portion located on the side of the first light-emitting unit away from the substrate.

[0214] This step specifically includes: patterning at least a portion of the pixel defining material above the first electrode 51 corresponding to the first light-emitting unit to form a first pixel opening 22 communicating with the first isolation opening 44R, the first pixel opening 22 exposing at least a portion of the first electrode 51 corresponding to the first light-emitting unit; since the edges of the extensions 612 of the second encapsulation portion 61G and the third encapsulation portion 61B are both located in the middle region 45, and the height of the middle region 45 is lower than the height of the first edge region 46a, the step difference between the side surface of the second encapsulation portion 61G and the third encapsulation portion 61B away from the substrate 10 and the side surface of the first edge region 46a close to the substrate 10 is reduced, improving the residue of the liquid, and improving the overlap effect between the second electrode and the sidewall of the first isolation opening 44R in the subsequent third light-emitting unit 50B, thereby improving the display effect of the display panel.

[0215] After forming an isolation material layer on the side of the insulating layer away from the substrate, the isolation material layer is patterned, and before or after forming a second isolation opening, or before or simultaneously forming at least a portion of the film layer of the second light-emitting unit in the second isolation opening, the manufacturing method further includes: patterning the isolation material layer to form a third isolation opening.

[0216] A first light-emitting material layer, a first second electrode 53, and a first encapsulation material layer are deposited on the side surface of the third encapsulation portion 61B facing away from the substrate 10 and the side surface of the second encapsulation portion 61G facing away from the substrate 10. The first light-emitting material layer, the first second electrode 53, and the first encapsulation material layer on the side surface of the third encapsulation portion 61B facing away from the substrate 10 and the side surface of the second encapsulation portion 61G facing away from the substrate 10 are then removed to obtain the first light-emitting unit 50R and the first encapsulation portion 61R.

[0217] Referring to FIG4, after step S70, a second encapsulation layer 70 is formed on the side of the third encapsulation portion 61B, the second encapsulation portion 61G and the first encapsulation portion 61R away from the substrate 10.

[0218] A third encapsulation layer 80 is formed on the side of the second encapsulation layer 70 that is opposite to the substrate 10.

[0219] Based on the same inventive concept, this disclosure also provides a display device, which includes the display panel described in this application, or a display panel prepared by the manufacturing method of the display panel described in this application. This display device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Because this display device includes the display panel described in this application, the display quality of this display device is better. It should be noted that some embodiments of this disclosure have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims may be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0220] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display panel, characterized in that, include: substrate; An insulating layer is located on one side of the substrate, the insulating layer including protrusions and recesses, the protrusions protruding in a direction away from the substrate; An isolation structure is located on the side of the insulating layer away from the substrate. The isolation structure encloses and forms a plurality of isolation openings. The plurality of isolation openings include a first isolation opening and a second isolation opening. The orthographic projection of the first isolation opening on the substrate overlaps with the orthographic projection of the protrusion on the substrate. The orthographic projection of the second isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate. Multiple light-emitting units, at least a portion of which are located in the corresponding isolation openings; The plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit, wherein at least a portion of the first light-emitting unit is located in the corresponding first isolation opening, and at least a portion of the second light-emitting unit is located in the corresponding second isolation opening.

2. The display panel as described in claim 1, characterized in that, The display panel also includes: A first encapsulation layer is located on the side of the plurality of light-emitting units facing away from the substrate. The first encapsulation layer includes a plurality of encapsulation portions, which are located on the side of the light-emitting units facing away from the substrate and extend to the side of the isolation structure facing away from the substrate. Preferably, the orthographic projections of adjacent package portions on the substrate overlap, or the orthographic projections of adjacent package portions on the substrate are spaced apart; Preferably, the plurality of encapsulation portions include a first encapsulation portion and a second encapsulation portion. The first encapsulation portion is located on the side of the first light-emitting unit facing away from the substrate and extends to the side of the isolation structure facing away from the substrate. The second encapsulation portion is located on the side of the second light-emitting unit facing away from the substrate and extends to the side of the isolation structure facing away from the substrate. Preferably, the orthographic projection of the second encapsulation portion on the substrate does not overlap with the orthographic projection of the surface of the protrusion portion away from the substrate on the substrate; Preferably, the orthographic projection of the second encapsulation portion on the substrate overlaps or does not overlap with the orthographic projection of the sidewall of the protrusion on the substrate.

3. The display panel as described in claim 2, characterized in that, The isolation structure includes a central region and an edge region located on the side of the central region facing the isolation opening, and the orthographic projection of the overlapping portion on the substrate is located within the orthographic projection range of the central region on the substrate; Preferably, the edge region includes a first edge region located on the side of the middle region facing the first isolation opening, and a second edge region located on the side of the middle region facing the second isolation opening. The orthographic projection of the first edge region on the substrate is within the orthographic projection range of the protrusion on the substrate, and the orthographic projection of the second edge region on the substrate is outside the orthographic projection range of the protrusion on the substrate. Preferably, the orthographic projection of the second edge region on the substrate is located within the orthographic projection range of the recessed portion on the substrate; Preferably, along a direction perpendicular to the surface of the substrate, the distance from the surface of the middle region facing away from the substrate to the substrate is less than the distance from the surface of the first edge region facing away from the substrate to the substrate. Preferably, along a direction perpendicular to the surface of the substrate, the distance from the side of the first edge region facing away from the substrate to the substrate is greater than the distance from the side of the second edge region facing away from the substrate to the substrate. Preferably, the plurality of isolation openings further includes a third isolation opening, and the plurality of light-emitting units further includes a third light-emitting unit. At least a portion of the third light-emitting unit is located in the corresponding third isolation opening. The orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate. The edge region further includes a third edge region located on the side of the middle region facing the third isolation opening. The orthographic projection of the third edge region on the substrate is located outside the orthographic projection range of the protrusion on the substrate. Preferably, the orthographic projection of the third edge region on the substrate is located within the orthographic projection range of the recess on the substrate; Preferably, along a direction perpendicular to the surface of the substrate, the distance from the surface of the first edge region facing away from the substrate to the substrate is greater than the distance from the surface of the third edge region facing away from the substrate to the substrate. Preferably, along a direction perpendicular to the surface of the substrate, the distance from the side of the second edge away from the substrate to the substrate is equal to the distance from the side of the third edge region away from the substrate to the substrate. Preferably, the orthographic projection of the first isolation opening on the substrate is located within the orthographic projection range of the protrusion on the substrate, the orthographic projection of the second isolation opening on the substrate is located within the orthographic projection range of the recess on the substrate, and the orthographic projection of the third isolation opening on the substrate is located within the orthographic projection range of the recess on the substrate.

4. The display panel as described in claim 3, characterized in that, The intermediate region includes a first intermediate region located between the first edge region and the second edge region, a second intermediate region located between the first edge region and the third edge region, and a third intermediate region located between the second edge region and the third edge region; Preferably, along a direction perpendicular to the surface of the substrate, from the second edge region to the first edge region, the distance from the surface of the first intermediate region away from the substrate to the substrate gradually increases; Preferably, along a direction perpendicular to the surface of the substrate, from the third edge region to the first edge region, the distance from the surface of the second intermediate region away from the substrate gradually increases. Preferably, along a direction perpendicular to the surface of the substrate, the distance from the surface of the third intermediate region facing away from the substrate to the substrate is equal to the distance from the surface of the second edge region facing away from the substrate to the substrate. Preferably, along a direction perpendicular to the surface of the substrate, the distance from the surface of the third intermediate region facing away from the substrate to the substrate is equal to the distance from the surface of the third edge region facing away from the substrate to the substrate.

5. The display panel as described in claim 1, characterized in that, The light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the substrate. The light-emitting functional layer is located on the side of the first electrode facing away from the substrate, and the second electrode is located on the side of the light-emitting functional layer facing away from the first electrode. Preferably, the isolation structure comprises a conductive material, and the second electrode is electrically connected to the isolation structure; Preferably, the distance between the first electrode of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the first electrode of the second light-emitting unit and the substrate along the thickness direction of the substrate; Preferably, the distance between the light-emitting functional layer of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the light-emitting functional layer of the second light-emitting unit and the substrate along the thickness direction of the substrate; Preferably, the distance between the second electrode of the first light-emitting unit and the substrate along the thickness direction of the substrate is greater than the distance between the second electrode of the second light-emitting unit and the substrate along the thickness direction of the substrate; Preferably, the first light-emitting unit and the second light-emitting unit emit different colors.

6. The display panel as described in claim 3, characterized in that, The first light-emitting unit has a different light-emitting color, the second light-emitting unit has a different light-emitting color, and the third light-emitting unit has a different light-emitting color. Preferably, the plurality of encapsulation portions further includes a third encapsulation portion, the third encapsulation portion being located on the side of the third light-emitting unit away from the substrate, and extending to the side of the isolation structure away from the substrate; Preferably, the encapsulation portion includes a main body portion and an extension portion connected to each other, the main body portion being located within the isolation opening, and the extension portion being located on the side of the isolation structure opposite to the substrate and having a gap between it and the isolation structure; Preferably, the orthographic projections of the extensions of adjacent encapsulation portions on the substrate overlap, and the orthographic projection of the overlapping portions on the substrate is located within the orthographic projection range of the intermediate region on the substrate; Preferably, the end of the extension of the second encapsulation portion near the first isolation opening does not exceed the centerline of the corresponding intermediate area, and the end of the extension of the third encapsulation portion near the second isolation opening does not exceed the centerline of the corresponding intermediate area; Preferably, the extension of the first package portion extends at least to the side of the extension of the second package portion away from the substrate, the extension of the first package portion extends at least to the side of the extension of the third package portion away from the substrate, the extension of the second package portion extends at least to the side of the extension of the third package portion away from the substrate, or the extension of the third package portion extends at least to the side of the extension of the second package portion away from the substrate. Preferably, the orthographic projection of the third encapsulation portion on the substrate does not overlap with the orthographic projection of the surface of the protrusion away from the substrate on the substrate; Preferably, the orthographic projection of the third encapsulation portion on the substrate overlaps or does not overlap with the orthographic projection of the sidewall of the protrusion on the substrate.

7. The display panel as described in claim 6, characterized in that, The display panel also includes a plurality of redundant parts, which are located within the gap and are made of the same material as at least a portion of the film layer in the light-emitting unit; Preferably, the plurality of redundant parts include a first redundant part, a second redundant part, and a third redundant part. The first redundant part is located in the gap between the extension of the first encapsulation part and the isolation structure and is made of the same material as at least a portion of the film layer in the first light-emitting unit. The second redundant part is located in the gap between the extension of the second encapsulation part and the isolation structure and is made of the same material as at least a portion of the film layer in the second light-emitting unit. The third redundant part is located in the gap between the extension of the third encapsulation part and the isolation structure and is made of the same material as at least a portion of the film layer in the third light-emitting unit. Preferably, the first redundant portion extends at least to the side of the second redundant portion away from the substrate, the first redundant portion extends at least to the side of the third redundant portion away from the substrate, the second redundant portion extends at least to the side of the third redundant portion away from the substrate, or the third redundant portion extends at least to the side of the second redundant portion away from the substrate. Preferably, the first redundant portion extends at least to the side of the second encapsulation portion away from the substrate; the first redundant portion extends at least to the side of the third encapsulation portion away from the substrate, the second redundant portion extends at least to the side of the third encapsulation portion away from the substrate, or the third redundant portion extends at least to the side of the second encapsulation portion away from the substrate.

8. The display panel as described in claim 5, characterized in that, The display panel further includes a pixel defining layer, which is located on the side of the isolation structure close to the substrate and on the side of the insulating layer away from the substrate. The pixel defining layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion and communicating with the isolation opening. The pixel opening exposes at least a portion of the first electrode. Preferably, the pixel defining layer comprises an inorganic insulating material.

9. The display panel as described in claim 5, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion. The first isolation portion is located on the side of the second isolation portion away from the substrate. The orthographic projection of the side of the second isolation portion away from the substrate onto the substrate is within the orthographic projection range of the first isolation portion onto the substrate. Preferably, the isolation structure further includes a third isolation portion, which is located on the side of the second isolation portion closer to the substrate. The orthographic projection of the second isolation portion on the substrate is within the orthographic projection range of the third isolation portion on the substrate, and the orthographic projection of the third isolation portion on the substrate is within the orthographic projection range of the first isolation portion on the substrate. Preferably, the isolation structure comprises a conductive material; Preferably, the material of the first isolation part includes titanium, the material of the second isolation part includes aluminum, and the material of the third isolation part includes molybdenum; Preferably, the second electrode overlaps with the second isolation portion, and / or the second electrode overlaps with the third isolation portion.

10. The display panel as claimed in claim 6, characterized in that, The display panel further includes a second encapsulation layer and a third encapsulation layer, wherein the second encapsulation layer is located on the side of the first encapsulation layer opposite to the substrate, and the third encapsulation layer is located on the side of the second encapsulation layer opposite to the substrate. Preferably, the materials of the first encapsulation layer and the third encapsulation layer include inorganic materials, and the material of the second encapsulation layer includes organic materials.

11. The display panel as claimed in claim 1, characterized in that, The insulating layer comprises organic insulating material; Preferably, the orthographic projection of the side surface of the protrusion away from the substrate onto the substrate is located within the orthographic projection range of the side surface of the protrusion closer to the substrate onto the substrate. Preferably, the protrusion and the recess are an integral structure; Preferably, the protrusion and the recess are made of the same material; Preferably, the recess does not penetrate the insulating layer; Preferably, the plurality of protrusions are spaced apart; Preferably, the orthographic projection of the recessed portion onto the substrate is a grid pattern.

12. A method for manufacturing a display panel, characterized in that, Includes the following steps: Provide substrate; An insulating layer is formed on one side of the substrate, the insulating layer including protrusions and recesses; An insulating material layer is formed on the side of the insulating layer that faces away from the substrate; The isolation material layer is patterned to form a second isolation opening, and the orthographic projection of the second isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate. At least a portion of the film layer of the second light-emitting unit is formed in the second isolation opening; The insulating material layer is patterned to form a first insulating opening; The orthographic projection of the first isolation opening on the substrate overlaps with the orthographic projection of the protrusion on the substrate; At least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening.

13. The manufacturing method as described in claim 12, characterized in that, The step of forming an insulating layer on one side of the substrate includes: An insulating material layer is formed on one side of the substrate. The insulating material layer is patterned to form protrusions and recesses.

14. The manufacturing method as described in claim 12, characterized in that, After forming an insulating material layer on the side of the insulating layer facing away from the substrate, patterning the insulating material layer, and before or after forming the second isolation opening, or before or simultaneously forming at least a portion of the film layer of the second light-emitting unit in the second isolation opening, the method further includes: The insulating material layer is patterned to form a third insulating opening. After forming at least a portion of the film layer of the second light-emitting unit in the second isolation opening, the method further includes: At least a portion of the film layer of the third light-emitting unit is formed in the third isolation opening, and the orthographic projection of the third isolation opening on the substrate overlaps with the orthographic projection of the recess on the substrate; Preferably, at least a portion of the film layer forming the second light-emitting unit in the second isolation opening comprises: At least a portion of the film layer of the second light-emitting unit and a second encapsulation portion located on the side of the second light-emitting unit away from the substrate are formed in the second isolation opening; The at least partial film layer forming the first light-emitting unit in the first isolation opening includes: At least a portion of the film layer of the first light-emitting unit and a first encapsulation portion located on the side of the first light-emitting unit away from the substrate are formed in the first isolation opening; The at least partial film layer forming the third light-emitting unit in the third isolation opening includes: At least a portion of the film layer of the third light-emitting unit and a third encapsulation portion located on the side of the third light-emitting unit away from the substrate are formed in the third isolation opening.

15. A display device, characterized in that, This includes a display panel as described in any one of claims 1-11, or a display panel manufactured by the method described in any one of claims 12-14.

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