Display panel, preparation method of display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display, the display panel comprises a substrate, a pixel defining layer, an isolation structure and a light emitting unit, the pixel defining layer is provided with a plurality of pixel openings, the isolation structure comprises a first isolation structure, and the light emitting unit comprises a second isolation structure. The first isolation structure is enclosed to form a plurality of isolation openings, and the plurality of isolation openings are arranged along a first direction; the light emitting colors of the light emitting units located in the same isolation opening are the same, and at least two pixel openings in the multiple pixel openings located in the same isolation opening are arranged in the second direction. According to the invention, the problem of electric leakage between the light-emitting units and the problem of dark spots of the light-emitting units are not easy to generate.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have the advantages of high image quality, power saving, thin body and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc., becoming the mainstream in display panels. In the preparation process of traditional display panels, the graphicization of luminous pixels is usually achieved through a fine metal mask (FMM). FMM technology is mature and has rich experience in mass production. However, FMM technology also has problems such as limited accuracy, high development cost, and long development cycle. The non-fine metal mask technology eliminates the limitations of traditional OLED processes on display screen size, resolution and other screen performance, and has the advantages of high performance, full-domain size, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A record relevant contents of the non-fine metal mask technology for reference.

[0003] However, there are still some problems with display panels that need to be solved urgently. Summary of the invention

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

[0005] substrate;

[0006] A pixel defining layer, located on one side of the substrate, and having a plurality of pixel openings disposed on the pixel defining layer;

[0007] an isolation structure, located on a side of the pixel defining layer away from the substrate, the isolation structure comprising a first isolation structure, the first isolation structure enclosing a plurality of isolation openings, the isolation openings being connected to the pixel openings, an orthographic projection of one isolation opening on the substrate covering an orthographic projection of a plurality of pixel openings on the substrate, and the plurality of isolation openings being arranged along a first direction;

[0008] A light-emitting unit, wherein the light-emitting unit is at least located in the pixel opening, the light-emitting colors of the light-emitting units located in the same isolation opening are the same, and at least two of the multiple pixel openings located in the same isolation opening are arranged along the second direction.

[0009] In some possible implementations, the isolation opening extends along the second direction;

[0010] Preferably, the light emitting units in two adjacent isolation openings arranged along the first direction emit light of different colors;

[0011] Preferably, the second direction intersects the first direction;

[0012] Preferably, the second direction is perpendicular to the first direction;

[0013] Preferably, the light-emitting unit comprises a first electrode, a light-emitting portion and a second electrode which are sequentially stacked in a direction away from the substrate, and the pixel opening exposes a portion of the first electrode;

[0014] Preferably, the light-emitting parts of the plurality of light-emitting units located in the same isolation opening are connected;

[0015] Preferably, the second electrodes of the plurality of light emitting units located in the same isolation opening are electrically connected.

[0016] In some possible implementations, the display panel further includes a defining wall located on a side of the pixel defining layer away from the substrate, and the defining wall is located between at least a portion of adjacent light-emitting units in the same isolation opening;

[0017] Preferably, a defining wall is provided between adjacent light-emitting units located in the same isolation opening;

[0018] Preferably, the defining wall extends along the first direction and contacts the first isolation structure;

[0019] Preferably, along a direction perpendicular to the base plate, the cross-sectional shape of the defining wall is trapezoidal;

[0020] Preferably, along a direction perpendicular to the base plate, a cross-sectional shape of the defining wall is an isosceles trapezoid.

[0021] In some possible implementations, the isolation structure includes a second isolation structure, and the second isolation structure is located between at least part of adjacent light-emitting units in the same isolation opening;

[0022] Preferably, the second isolation structure and the first isolation structure are enclosed to form an isolation sub-opening, and the orthographic projection of the isolation sub-opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0023] In some possible implementations, an orthographic projection of the spacer opening on the substrate covers an orthographic projection of at least two pixel openings arranged along the second direction on the substrate.

[0024] In some possible implementations, the display panel further includes a defining wall located on a side of the pixel defining layer away from the substrate, and the defining wall is located between at least a portion of adjacent light-emitting units in the same insulator opening;

[0025] Preferably, a boundary wall is provided between adjacent light-emitting units located in the same insulator opening.

[0026] In some possible implementations, the isolation structure includes a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, and an orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0027] Preferably, the distance between the orthographic projection of the side of the first isolation portion of the first isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a first distance, and the distance between the orthographic projection of the side of the first isolation portion of the second isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a second distance, and the second distance is greater than the first distance;

[0028] Preferably, the difference between the second distance and the first distance is greater than or equal to 0.3 μm and less than or equal to 1 μm;

[0029] Preferably, the second distance is greater than or equal to 0.5 μm and less than or equal to 1 μm;

[0030] Preferably, the second electrode of the light-emitting unit is electrically connected to the first isolation portion; and / or, the first isolation structure further comprises a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode of the light-emitting unit is electrically connected to the third isolation portion;

[0031] Preferably, the material of the third isolation portion includes molybdenum or titanium; and / or the material of the first isolation portion includes aluminum or copper; and / or the material of the second isolation portion includes titanium or molybdenum.

[0032] In some possible implementations, the light-emitting unit includes a first electrode, a light-emitting portion, and a second electrode which are sequentially stacked in a direction away from the substrate, and the pixel opening exposes a portion of the first electrode;

[0033] Preferably, the light-emitting parts of the plurality of light-emitting units located in the same opening of the insulator are connected;

[0034] Preferably, the second electrodes of the plurality of light-emitting units located in the same insulator opening are connected;

[0035] Preferably, the second electrode overlaps the first isolation structure;

[0036] Preferably, the second electrode overlaps the second isolation structure.

[0037] In some possible implementations, an orthographic projection of the light-emitting portion on the substrate is spaced apart from an orthographic projection of a side of the first isolation structure close to the substrate on the substrate;

[0038] Preferably, an orthographic projection of the light emitting portion on the substrate is spaced from an orthographic projection of a side of the second isolation structure close to the substrate on the substrate.

[0039] In some possible implementations, the display panel further includes a first encapsulation layer located on a side of the second electrode away from the substrate, the first encapsulation layer includes a plurality of encapsulation units arranged at intervals, and at least a portion of the encapsulation unit extends from a side of the first isolation structure toward the isolation opening to a side of the first isolation structure away from the substrate;

[0040] Preferably, at least a portion of the packaging unit extends from a side of the second isolation structure toward the isolation opening to a side of the second isolation structure away from the substrate;

[0041] Preferably, the packaging unit located in the same insulator opening is arranged on the entire surface;

[0042] Preferably, adjacent packaging units are spaced apart on a side of the first isolation structure away from the substrate;

[0043] Preferably, adjacent packaging units are spaced apart on a side of the second isolation structure away from the substrate;

[0044] Preferably, the orthographic projection of the packaging unit on the substrate covers the orthographic projection of at least one of the light-emitting units on the substrate.

[0045] In some possible implementations, the display panel further includes a second encapsulation layer located on a side of the first encapsulation layer away from the substrate;

[0046] Preferably, the display panel further comprises a third encapsulation layer located on a side of the second encapsulation layer away from the substrate;

[0047] Preferably, the materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials;

[0048] Preferably, the material of the second encapsulation layer includes organic material.

[0049] In some possible implementations, the present application further provides a display panel, comprising:

[0050] substrate;

[0051] an isolation structure, located on one side of the substrate, the isolation structure encloses a plurality of isolation openings, the isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, the orthographic projection of the side of the first isolation portion away from the substrate on the substrate being located within the orthographic projection of the second isolation portion on the substrate;

[0052] In which, the distance between the orthographic projection of the first isolation portion extending along the first direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate is greater than the distance between the orthographic projection of the first isolation portion extending along the second direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate, and the first direction and the second direction intersect.

[0053] In some possible implementations, a difference between a distance between an orthographic projection of the first isolation portion extending along the first direction on the substrate and an orthographic projection of the corresponding second isolation portion on the substrate and a distance between an orthographic projection of the first isolation portion extending along the second direction on the substrate and an orthographic projection of the corresponding second isolation portion on the substrate is greater than or equal to 0.3 μm and less than or equal to 1 μm;

[0054] Preferably, a distance between an orthographic projection of the first isolation portion extending along the first direction on the substrate and an orthographic projection of the corresponding second isolation portion on the substrate is greater than or equal to 0.5 μm and less than or equal to 1 μm.

[0055] In some possible implementations, the present application further provides a method for preparing a display panel, the method comprising:

[0056] providing a substrate;

[0057] A pixel defining layer and an isolation structure are formed on one side of the substrate, wherein the pixel defining layer is provided with a plurality of pixel openings, the isolation structure is located on a side of the pixel defining layer away from the substrate, the isolation structure comprises a first isolation structure, the first isolation structure encloses and forms a plurality of isolation openings, the isolation openings are connected to the pixel openings, an orthographic projection of one isolation opening on the substrate covers an orthographic projection of a plurality of pixel openings on the substrate, and the plurality of isolation openings are arranged along a first direction;

[0058] A light-emitting unit is formed at least in the pixel opening, the light-emitting units in the same isolation opening emit the same light color, and at least two of the plurality of pixel openings in the same isolation opening are arranged along the second direction.

[0059] In some possible implementations, the step of forming a pixel defining layer and an isolation structure on one side of the substrate includes:

[0060] forming a pixel defining material layer and an isolation material layer in sequence on one side of the substrate;

[0061] The isolation material layer is patterned through a semi-transparent mask to form an isolation structure, wherein the isolation structure further comprises a second isolation structure, wherein the second isolation structure is located between at least part of the adjacent light-emitting units in the same isolation opening, wherein the isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within the orthographic projection of the second isolation portion on the substrate, wherein the distance between the orthographic projection of a side of the first isolation portion of the first isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a first distance, and the distance between the orthographic projection of a side of the first isolation portion of the second isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a second distance, and the second distance is greater than the first distance;

[0062] patterning the pixel definition material layer to form a pixel definition layer;

[0063] Preferably, after the step of forming a pixel defining layer and an isolation structure on one side of the substrate, the method further comprises:

[0064] A defining wall is formed on a side of the pixel defining layer away from the substrate, and the defining wall is located between at least a portion of adjacent light emitting units in the same isolation opening.

[0065] In some possible implementations, the present application further provides an electronic device, which includes the display panel described in the present application, or includes a display panel prepared by the method for preparing the display panel described in the present application.

[0066] Compared with the prior art, this application has the following beneficial effects:

[0067] The present application provides a display panel, a method for preparing a display panel, and an electronic device. By arranging a plurality of isolation openings along the moving direction of the evaporation source of the light-emitting material layer, and the light-emitting colors of the light-emitting units located in the same isolation opening are the same, and at least two pixel openings located in the same isolation opening are arranged along the evaporation direction of the light-emitting material layer, leakage problems are less likely to occur between the light-emitting units, and dark spot problems are less likely to occur in the light-emitting units, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0069] Figure 1 The display panel provided in the embodiment of the present application includes a partial top view schematic diagram of a first isolation structure;

[0070] Figure 2 Provided in the embodiments of this application Figure 1 One of the cross-sectional views at AA in the middle;

[0071] Figure 3 Provided in the embodiments of this application Figure 1 One of the cross-sectional views at the middle BB;

[0072] Figure 4 The display panel provided for the embodiment of the present application includes a partial top view schematic diagram of a defined wall;

[0073] Figure 5 Provided in the embodiments of this application Figure 4 One of the cross-sectional views at CC in the middle;

[0074] Figure 6 The display panel provided in the embodiment of the present application includes a partial top view schematic diagram of a second isolation structure;

[0075] Figure 7 Provided in the embodiments of this application Figure 6 One of the cross-sectional views at DD in the middle;

[0076] Figure 8 A partial top view schematic diagram of a display panel provided in an embodiment of the present application including a second isolation structure and a defining wall;

[0077] Fig. 9 Provided in the embodiments of this application Figure 8 One of the cross-sectional views at EE in the middle;

[0078] Fig.10 Provided in the embodiments of this application Figure 8 The second cross-sectional view at EE in the middle;

[0079] Fig.11 Provided in the embodiments of this application Figure 1 The second cross-sectional view at AA in the middle;

[0080] Fig.12 Provided in the embodiments of this application Figure 1 The second cross-sectional view of the middle BB;

[0081] Fig.13 Provided in the embodiments of this application Figure 4 The second cross-sectional view at CC in the middle;

[0082] Fig.14 Provided in the embodiments of this application Figure 6 The second cross-sectional view at DD in the middle;

[0083] Fig.15 Provided in the embodiments of this application Figure 8 The third cross-sectional view of the EE section;

[0084] Fig.16 Provided in the embodiments of this application Figure 1 The third cross-sectional view at AA in the middle;

[0085] Fig.17 Provided in the embodiments of this application Figure 1 The third cross-sectional view of the middle BB;

[0086] Fig.18 Provided in the embodiments of this application Figure 4 The third cross-sectional view of the CC in the middle;

[0087] Fig.19 Provided in the embodiments of this application Figure 6 The third cross-sectional view at DD in the middle;

[0088] Fig. 20 Provided in the embodiments of this application Figure 8 The fourth cross-sectional view of the EE section;

[0089] Fig.21 The display panel provided in the embodiment of the present application includes a partial top view schematic diagram of a first isolation structure and a second isolation structure;

[0090] Fig. 22 Provided in the embodiments of this application Fig.21 One of the cross-sectional views at FF in the middle;

[0091] Fig.23 Provided in the embodiments of this application Fig.21 One of the cross-sectional views at GG in the middle;

[0092] Fig.24 Provided in the embodiments of this application Fig.21 The second cross-sectional view of the FF position;

[0093] Fig.25 Provided in the embodiments of this application Fig.21 The second cross-sectional view at GG in the middle;

[0094] Fig.26 A schematic diagram of a process for preparing a display panel provided in an embodiment of the present application;

[0095] Fig. 27 A cross-sectional schematic diagram of sequentially forming a pixel defining material layer and an isolation material layer on one side of a substrate provided in an embodiment of the present application.

[0096] Figure numerals: 1. substrate; 2. pixel defining layer; 21. pixel opening; 3. isolation structure; 31. first isolation structure; 32. second isolation structure; 301. first isolation portion; 302. second isolation portion; 303. third isolation portion; 4. first electrode; 5. light-emitting portion; 6. second electrode; 7. light-emitting unit; 8. isolation opening; 81. insulator opening; 9. defining wall; 10. first encapsulation layer; 101. encapsulation unit; 11. second encapsulation layer; 12. third encapsulation layer; 13. pixel defining material layer; 14. isolation material layer. DETAILED DESCRIPTION

[0097] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0098] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0099] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0100] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0101] It should be noted that, in the absence of conflict, different features in the embodiments of the present application may be combined with each other.

[0102] Improving the density of light-emitting units in a display panel (i.e., pixel density) is an important way to improve display effects. However, the display panels currently made using fine metal mask (FMM) technology are unable to further increase the density of light-emitting units due to technical limitations. The inventors have found through long-term research that in order to solve the technical problem that the density of light-emitting units cannot be further increased, an isolation structure is provided in some display panels. When the light-emitting functional layer and the second electrode are evaporated in the entire layer, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Through multiple evaporation and multiple etching processes (i.e., light-emitting unit patterning), light-emitting units of different colors can be formed in different isolation openings.

[0103] The display panel in the related art includes a substrate, an isolation structure located on one side of the substrate, and a light-emitting unit located in an isolation opening formed by the isolation structure, wherein the light-emitting unit includes a light-emitting portion and a second electrode. The light-emitting portion is formed by evaporating a light-emitting material layer, and the second electrode is formed by evaporating a second electrode material layer, and the evaporation direction of the light-emitting material layer is the same as that of the second electrode material layer.

[0104] In the process of realizing the present invention, the inventors found that the following problems exist in the related technology: in the moving direction of the evaporation source of the light-emitting material layer, due to the small evaporation angle, the light-emitting part is not easy to overlap with the isolation structure, but the second electrode can overlap with the isolation structure; in the evaporation direction of the light-emitting material layer, due to the relatively large evaporation angle, the light-emitting part is easy to overlap with the isolation structure, and since the light-emitting part overlaps with the isolation structure, leakage may occur between adjacent light-emitting units; and since the light-emitting part overlaps with the isolation structure, the second electrode has a poor overlap with the isolation structure, which may cause dark spots in the corresponding light-emitting units, ultimately affecting the display effect of the display panel.

[0105] In order to solve the above-mentioned technical problems, the inventor innovatively designed the following technical solutions, and the specific implementation solutions of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the defects existing in the solutions in the above-mentioned prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above-mentioned technical problems and the solutions proposed in this embodiment below for the above-mentioned problems should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as the technical content known to those skilled in the art.

[0106] See also Figure 1-Figure 3 This embodiment provides a display panel, which includes a substrate 1, a pixel defining layer 2, an isolation structure 3 and a light-emitting unit 7.

[0107] The substrate 1 may include a substrate and a plurality of drive units located on one side of the substrate, and each drive unit may include one or more semiconductor switch devices. The semiconductor switch device may be formed by the cooperation of a plurality of film layers in the substrate 1, for example, the semiconductor switch device may be a thin film transistor formed by the cooperation of a plurality of film layers.

[0108] The pixel defining layer 2 is located on one side of the substrate 1, and the pixel defining layer 2 is provided with a plurality of pixel openings 21; the isolation structure 3 is located on the side of the pixel defining layer 2 away from the substrate 1, and the isolation structure 3 includes a first isolation structure 31, and the first isolation structure 31 encloses and forms a plurality of isolation openings 8, and the isolation openings 8 are connected to the pixel openings 21, and the orthographic projection of one isolation opening 8 on the substrate 1 covers the orthographic projections of a plurality of pixel openings 21 on the substrate 1, and the plurality of isolation openings 8 are arranged along a first direction a, and the first direction a includes the moving direction of the evaporation source of the light-emitting material layer of the display panel.

[0109] The light-emitting unit 7 is at least located within the pixel opening 21, the light-emitting colors of the light-emitting units 7 located within the same isolation opening 8 are the same, and at least two pixel openings 21 among the multiple pixel openings 21 located within the same isolation opening 8 are arranged along the second direction b, and the second direction b includes the evaporation direction of the light-emitting material layer of the display panel.

[0110] The light-emitting unit 7 includes a first electrode 4, a light-emitting portion 5, and a second electrode 6 which are sequentially stacked in a direction away from the substrate 1. The pixel opening 21 exposes a portion of the first electrode 4. Since the light-emitting portion 5 is not easy to overlap with the first isolation structure 31 along the moving direction of the evaporation source of the light-emitting material layer (the first direction a), leakage problems are not easy to occur between adjacent light-emitting units 7 in the first direction a. Since the light-emitting portion 5 is not easy to overlap with the first isolation structure 31 in the first direction a, the overlap thickness of the second electrode 6 and the first isolation structure 31 in the first direction a is thicker, the overlap effect is better, and the corresponding light-emitting unit 7 is not easy to produce dark spots.

[0111] One light-emitting unit 7 is located in one pixel opening 21, and one isolation opening 8 has multiple pixel openings 21, so there are multiple light-emitting units 7 in one isolation opening 8. Since the light-emitting colors of the light-emitting units 7 located in the same isolation opening 8 are the same, the light-emitting parts 5 of the multiple light-emitting units 7 located in the same isolation opening 8 are connected, and the second electrodes 6 of the multiple light-emitting units 7 located in the same isolation opening 8 are electrically connected. Therefore, it is not easy to cause leakage problems between the light-emitting units 7 located in the same isolation opening 8, and it is not easy for the light-emitting units 7 located in the same isolation opening 8 to produce dark spots.

[0112] Even if the second electrode 6 of a light-emitting unit 7 arranged along the second direction b overlaps abnormally with the first isolation structure 31, the second electrodes 6 between the light-emitting units 7 located in the same isolation opening 8 are interconnected to assist in power supply, thereby effectively improving the problem of dark spots generated by the light-emitting unit 7.

[0113] Based on the above design, this embodiment arranges multiple isolation openings 8 along the moving direction of the evaporation source of the light-emitting material layer, and the light-emitting units 7 located in the same isolation opening 8 have the same light-emitting color, and the second electrodes 6 of at least two light-emitting units 7 located in the same isolation opening 8 are electrically connected. This can make it less likely for leakage problems to occur between the light-emitting units 7 and make it less likely for the light-emitting units 7 to have dark spot problems, thereby improving the display effect of the display panel.

[0114] For some possible implementations, see again Figure 1 , the isolation opening 8 extends along the second direction b. In this way, the plurality of light-emitting units 7 located in the isolation opening 8 are arranged along the evaporation direction of the light-emitting material layer of the display panel, leakage problems are not likely to occur between the plurality of light-emitting units 7 arranged along the evaporation direction of the light-emitting material layer of the display panel, and dark spots are not likely to occur between the light-emitting units 7 arranged along the evaporation direction of the light-emitting material layer of the display panel.

[0115] Preferably, the light-emitting units 7 in two adjacent isolation openings 8 arranged along the first direction a emit light of different colors.

[0116] Optionally, the second direction b intersects with the first direction a.

[0117] Furthermore, the second direction b is perpendicular to the first direction a.

[0118] like Figure 1 As shown, the light-emitting units 7 with red, green and blue light-emitting colors are arranged in sequence along the first direction a. In this way, leakage problems are not likely to occur between the light-emitting units 7 with different light-emitting colors arranged along the first direction a, and dark spots are not likely to occur between the light-emitting units 7 with different light-emitting colors arranged along the first direction a.

[0119] For some possible implementations, see Figure 4-Figure 5 The display panel further includes a defining wall 9 located on a side of the pixel defining layer 2 away from the substrate 1 , and the defining wall 9 is located between at least part of adjacent light emitting units 7 in the same isolation opening 8 .

[0120] Optionally, a defining wall 9 is provided between adjacent light-emitting units 7 in the same isolation opening 8. The light-emitting portions 5 and the second electrode 6 of adjacent light-emitting units 7 extend along the surface of the defining wall 9 and are connected to each other. Thus, by providing the defining wall 9 between adjacent light-emitting units 7, the length of the light-emitting portion 5 can be extended, thereby improving the display effect of the corresponding light-emitting unit 7, and finally improving the display effect of the display panel.

[0121] Optionally, the defining wall 9 extends along the first direction a and contacts the first isolation structure 31 .

[0122] The material of the defining wall 9 can be either an inorganic material or an organic material. The defining wall 9 is arranged between adjacent light-emitting units 7. The light-emitting parts 5 and the second electrodes 6 of the multiple light-emitting units 7 located in the same isolation opening 8 extend along the surface of the defining wall 9 and are connected to each other. The second electrode 6 of a light-emitting unit 7 arranged along the second direction b is abnormally overlapped with the first isolation structure 31. The second electrodes 6 between the light-emitting units 7 located in the same isolation opening 8 are interconnected, which can assist in power supply, thereby effectively improving the problem of dark spots generated by the light-emitting units 7.

[0123] Preferably, along a direction perpendicular to the substrate 1 , the cross-sectional shape of the boundary wall 9 is trapezoidal.

[0124] Furthermore, the cross-sectional shape of the boundary wall 9 is an isosceles trapezoid along the direction perpendicular to the substrate 1 . In this way, the light emitting portion 5 of the light emitting unit 7 can more easily extend along the side wall of the boundary wall 9 to the side of the boundary wall 9 away from the substrate 1 .

[0125] For some possible implementations, see Figure 6-Figure 7The isolation structure 3 includes a second isolation structure 32 , and the second isolation structure 32 is located between at least part of adjacent light-emitting units 7 in the same isolation opening 8 .

[0126] Optionally, the second isolation structure 32 and the first isolation structure 31 enclose an isolation sub-opening 81 , and the orthographic projection of the isolation sub-opening 81 on the substrate 1 is located within the orthographic projection of the isolation opening 8 on the substrate 1 .

[0127] The second isolation structure 32 divides an isolation opening 8 into a plurality of isolation sub-openings 81, and one isolation sub-opening 81 corresponds to one area. Therefore, the second isolation structure 32 divides the light-emitting unit 7 located in the same isolation opening 8 into a plurality of areas. If an abnormality occurs in the packaging of a certain area, the abnormal packaging can be limited to the area without affecting the packaging of the light-emitting units 7 in other areas, thereby improving the packaging effect of the display panel.

[0128] For some possible implementations, see again Figure 6 The orthographic projection of the spacer opening 81 on the substrate 1 covers the orthographic projections of at least two pixel openings 21 arranged along the second direction b on the substrate 1 .

[0129] In this embodiment, at least two light emitting units 7 are divided into the same area by the second isolation portion 302 . When the packaging in the area fails, the packaging effect of the light emitting units 7 in other areas is not affected.

[0130] For some possible implementations, see Figure 8-Figure 9 The defining wall 9 is located between at least some adjacent light-emitting units 7 within the same insulator opening 81 .

[0131] Furthermore, a boundary wall 9 is provided between adjacent light-emitting units 7 located in the same isolator opening 81 .

[0132] The light emitting portion 5 and the second electrode 6 of the light emitting unit 7 in the same spacer opening 81 both extend from the side wall of the boundary wall 9 to the side of the boundary wall 9 away from the substrate 1 and are connected to each other.

[0133] For some possible implementations, see again Fig. 9 The isolation structure 3 includes a first isolation portion 301 and a second isolation portion 302 which are stacked in sequence in a direction away from the substrate 1 , and the orthographic projection of the side of the first isolation portion 301 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation portion 302 on the substrate 1 .

[0134] Since the second isolation portion 302 is located on the side of the first isolation portion 301 away from the substrate 1, and in a plane parallel to the substrate 1, the lateral width of the second isolation portion 302 is greater than the lateral width of the first isolation portion 301, the second isolation portion 302 will disconnect the light-emitting material layer and the second electrode material layer at the isolation structure 3.

[0135] Preferably, see again Figure 2 and Fig. 9 The distance between the orthographic projection of the side of the first isolation portion 301 of the first isolation structure 31 close to the substrate 1 and the orthographic projection of the second isolation portion 302 on the substrate 1 is a first distance D1, and the distance between the orthographic projection of the side of the first isolation portion 301 of the second isolation structure 32 close to the substrate 1 and the orthographic projection of the second isolation portion 302 on the substrate 1 is a second distance D2, and the second distance D2 is greater than the first distance D1.

[0136] The first distance D1 is equal to the distance between the orthographic projection of the first isolation part 301 of the isolation structure in the related art on the substrate 1 and the orthographic projection of the second isolation part 302 on the substrate 1. Since the second distance D2 is greater than the first distance D1, after the light-emitting material layer is separated by the second isolation structure 32, the light-emitting part 5 is not easy to overlap with the second isolation structure 32, and after the second electrode material layer is separated by the second isolation structure 32, the overlap effect of the second electrode 6 and the second isolation structure 32 is better. In this way, when the second isolation structure 32 is set, it is not easy to cause leakage problems between the light-emitting units 7 arranged along the second direction b in the same isolation opening 8, and it is not easy for the light-emitting units 7 arranged along the second direction b in the same isolation opening 8 to produce dark spots.

[0137] Optionally, the difference between the second distance D2 and the first distance D1 is greater than or equal to 0.3 μm and less than or equal to 1 μm. For example, the difference between the second distance D2 and the first distance D1 may be 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm or 1 μm, etc. Reasonable setting of the difference between the second distance D2 and the first distance D1 can make it less likely for the light-emitting portion 5 of the light-emitting unit 7 arranged along the second direction b to overlap with the second isolation structure 32, and can make the overlap effect of the second electrode 6 and the second isolation structure 32 better.

[0138] Optionally, the second distance D2 is greater than or equal to 0.5 μm and less than or equal to 1 μm, for example, the second distance D2 may be 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm or 1 μm, etc. Reasonable setting of the second distance D2 can make the light-emitting units 7 arranged along the second direction b have better light-emitting effects.

[0139] Preferably, see again Fig. 9, the second electrode 6 of the light emitting unit 7 is electrically connected to the first isolation portion 301 .

[0140] The first isolation portion 301 includes a conductive material, and the second electrode 6 corresponding to the light emitting unit 7 extends to contact the side wall of the first isolation portion 301 to achieve electrical connection between the second electrode 6 corresponding to the light emitting unit 7 and the first isolation portion 301 .

[0141] See also Fig.10 The first isolation structure 31 further includes a third isolation portion 303 located on a side of the first isolation portion 301 facing the substrate 1 , and the second electrode 6 of the light emitting unit 7 is electrically connected to the third isolation portion 303 .

[0142] The third isolation portion 303 includes a conductive material, and the second electrode 6 corresponding to the light emitting unit 7 extends to contact the side wall of the third isolation portion 303 to achieve electrical connection between the second electrode 6 corresponding to the light emitting unit 7 and the third isolation portion 303 .

[0143] Specifically, the material of the third isolation part 303 includes molybdenum or titanium; and / or the material of the first isolation part 301 includes aluminum or copper; and / or the material of the second isolation part 302 includes titanium or molybdenum. In this way, when the isolation structure 3 separates the second electrode material layer into the second electrode 6, the second electrode 6 is more easily electrically connected to the first isolation part 301 and / or the third isolation part 303.

[0144] For some possible implementations, see again Fig. 9 , the light-emitting parts 5 of multiple light-emitting units 7 located in the same insulator opening 81 are connected.

[0145] Optionally, the second electrodes 6 of the plurality of light emitting units 7 located in the same isolator opening 81 are connected in sequence, the second electrode 6 overlaps the first isolation structure 31 , and the second electrode 6 overlaps the second isolation structure 32 .

[0146] Optionally, an orthographic projection of the light emitting portion 5 on the substrate 1 is spaced from an orthographic projection of a side of the first isolation structure 31 close to the substrate 1 on the substrate 1 .

[0147] Optionally, an orthographic projection of the light emitting portion 5 on the substrate 1 is spaced from an orthographic projection of a side of the second isolation structure 32 close to the substrate 1 on the substrate 1 .

[0148] The light-emitting parts 5 of the plurality of light-emitting units 7 in the same isolator opening 81 are connected to each other, and the light-emitting parts 5 of the light-emitting units 7 do not overlap with the first isolating structure 31 in the first direction a, and do not overlap with the second isolating structure 32 in the second direction b. In this way, leakage problems are not likely to occur between the light-emitting units 7 in different isolator openings 81 of the same isolating opening 8, and leakage problems are not likely to occur between the light-emitting units 7 in different isolating openings 8.

[0149] The second electrodes 6 of multiple light-emitting units 7 in the same isolator opening 81 are connected, and the second electrodes 6 of the light-emitting units 7 overlap well with the first isolation structure 31 in the first direction a and overlap well with the second isolation structure 32 in the second direction b. In this way, the light-emitting units 7 are not prone to dark spots.

[0150] For some possible implementations, see Figure 11-Figure 15 The display panel also includes a first packaging layer 10 located on the side of the second electrode 6 away from the substrate 1, the first packaging layer 10 includes a plurality of packaging units 101 arranged at intervals, and at least part of the packaging unit 101 extends from the side of the first isolation structure 31 toward the isolation opening 8 to the side of the first isolation structure 31 away from the substrate 1.

[0151] Optionally, at least a portion of the packaging unit 101 extends from a side of the second isolation structure 32 facing the isolation opening 8 to a side of the second isolation structure 32 away from the substrate 1 .

[0152] Optionally, adjacent package units 101 are arranged at intervals on a side of the first isolation structure 31 away from the substrate 1 , and adjacent package units 101 are arranged at intervals on a side of the second isolation structure 32 away from the substrate 1 .

[0153] During the patterning process of the light-emitting unit 7, the first packaging material layer is disconnected at the first isolation structure 31 and the second isolation structure 32 to form a packaging unit 101. The packaging unit 101 can completely and independently package the corresponding light-emitting unit 7, thereby improving the display characteristics of the display panel.

[0154] Preferably, the orthographic projection of the encapsulation unit 101 on the substrate 1 covers the orthographic projection of at least one light-emitting unit 7 on the substrate 1 .

[0155] Optionally, the packaging units 101 located in the same spacer opening 81 are arranged on the entire surface.

[0156] Multiple light-emitting units 7 located in the same insulator opening 81 are fully encapsulated by the same packaging unit 101, and light-emitting units 7 in different insulator openings 81 are encapsulated by different packaging units 101. Therefore, if the packaging of a certain packaging unit 101 fails, it will not affect the packaging of the corresponding light-emitting unit 7 by other packaging units 101.

[0157] For some possible implementations, see Figure 16-Figure 20 The display panel further includes a second encapsulation layer 11 located on a side of the first encapsulation layer 10 away from the substrate 1 and a third encapsulation layer 12 located on a side of the second encapsulation layer 11 away from the substrate 1 .

[0158] Preferably, the materials of the first encapsulation layer 10 and the third encapsulation layer 12 both include inorganic materials, and the material of the second encapsulation layer 11 includes organic materials.

[0159] For example, the first encapsulation layer 10 and the third encapsulation layer 12 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 11 can be formed by inkjet printing (IJP). The second encapsulation layer 11 and the third encapsulation layer 12 can provide a better encapsulation effect on the light-emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0160] For some possible implementations, see Figure 21-23 The present application also provides a display panel, which includes a substrate 1 and an isolation structure 3.

[0161] The isolation structure 3 is located on one side of the substrate 1. The isolation structure 3 encloses a plurality of isolation openings 8. The isolation structure 3 includes a first isolation portion 301 and a second isolation portion 302 which are stacked in sequence in a direction away from the substrate 1. The orthographic projection of the side of the first isolation portion 301 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation portion 302 on the substrate 1.

[0162] Among them, the distance D3 between the orthographic projection of the first isolation portion 301 extending along the first direction a on the substrate 1 and the orthographic projection of the corresponding second isolation portion 302 on the substrate 1 is greater than the distance D4 between the orthographic projection of the first isolation portion 301 extending along the second direction b on the substrate 1 and the orthographic projection of the corresponding second isolation portion 302 on the substrate 1, the first direction a includes the moving direction of the evaporation source of the light-emitting material layer of the display panel, the second direction b includes the evaporation direction of the light-emitting material layer of the display panel, and the first direction a and the second direction b intersect.

[0163] The light-emitting unit 7 includes a first electrode 4, a light-emitting portion 5, and a second electrode 6 which are sequentially stacked in a direction away from the substrate 1. The pixel opening 21 exposes a portion of the first electrode 4. Since the light-emitting portion 5 is not easy to overlap with the isolation structure 3 along the moving direction of the evaporation source of the light-emitting material layer (the first direction a), leakage problems are not easy to occur between adjacent light-emitting units 7 in the first direction a. Since the light-emitting portion 5 is not easy to overlap with the isolation structure 3 in the first direction a, the overlap thickness of the second electrode 6 and the isolation structure 3 in the first direction a is thicker, the overlap effect is better, and the corresponding light-emitting unit 7 is not easy to produce dark spots.

[0164] The distance D4 is equal to the distance between the orthographic projection of the first isolation part 301 of the isolation structure in the related technology on the substrate 1 and the orthographic projection of the second isolation part 302 on the substrate 1. Since the distance D3 is greater than the distance D4, in the second direction b, after the light-emitting material layer is separated by the second isolation structure 32, the light-emitting part 5 is not easy to overlap with the second isolation structure 32. Therefore, leakage problems are not easy to occur between adjacent light-emitting units 7 in the first direction a.

[0165] Since the light-emitting portion 5 is not easy to overlap with the isolation structure 3 in the second direction b, the overlapping thickness of the second electrode 6 and the isolation structure 3 in the second direction b is thicker, the overlapping effect is better, and the corresponding light-emitting unit 7 is not easy to produce dark spots.

[0166] Specifically, the difference between the distance D3 and the distance D4 is greater than or equal to 0.3 μm and less than or equal to 1 μm, for example, it can be 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm or 1 μm, etc. Reasonable setting of the difference between the distance D3 and the distance D4 can make it less likely for the light-emitting portion 5 of the light-emitting unit 7 arranged along the second direction b to overlap with the isolation structure 3, and can make the overlap effect of the second electrode 6 and the second isolation structure 32 better.

[0167] Optionally, the distance D3 is greater than or equal to 0.5 μm and less than or equal to 1 μm, for example, the distance D3 may be 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm or 1 μm, etc. Reasonable setting of the distance D3 can make the light emitting units 7 arranged along the second direction b have better light emitting effect.

[0168] In summary, in this embodiment, the light-emitting units 7 arranged along the first direction a and the second direction b are not prone to leakage problems and dark spots, thereby greatly improving the display effect of the display panel.

[0169] For some possible implementations, see Figure 24-25 The display panel also includes a first encapsulation layer 10 located on the side of the light-emitting unit 7 away from the substrate 1, the first encapsulation layer 10 includes a plurality of spaced-apart encapsulation units 101, at least part of the encapsulation units 101 extend from the side of the isolation structure 3 toward the isolation opening 8 to the side of the isolation structure 3 away from the substrate 1.

[0170] During the patterning process of the light-emitting unit 7 , the first packaging material layer is disconnected at the isolation structure 3 to form the packaging unit 101 . The packaging unit 101 can completely and independently package the corresponding light-emitting unit 7 , thereby improving the display characteristics of the display panel.

[0171] For some possible implementations, see Fig.26The present application also provides a method for preparing a display panel, the method comprising:

[0172] S10: providing a substrate 1.

[0173] S11: A pixel defining layer 2 and an isolation structure 3 are formed on one side of the substrate 1, wherein the pixel defining layer 2 is provided with a plurality of pixel openings 21, and the isolation structure 3 is located on a side of the pixel defining layer 2 away from the substrate 1, and the isolation structure 3 includes a first isolation structure 31, wherein the first isolation structure 31 encloses and forms a plurality of isolation openings 8, wherein the isolation openings 8 are connected to the pixel openings 21, and the orthographic projection of one isolation opening 8 on the substrate 1 covers the orthographic projections of a plurality of pixel openings 21 on the substrate 1, and the plurality of isolation openings 8 are arranged along a first direction a, and the first direction a includes the moving direction of the evaporation source of the light-emitting material layer of the display panel.

[0174] S12: A light-emitting unit 7 is formed at least within the pixel opening 21, the light-emitting units 7 within the same isolation opening 8 have the same light-emitting color, and at least two of the multiple pixel openings 21 within the same isolation opening 8 are arranged along a second direction b, and the second direction b includes a vapor deposition direction of the light-emitting material layer of the display panel.

[0175] The light-emitting unit 7 in the display panel formed by the above method includes a first electrode 4, a light-emitting portion 5, and a second electrode 6 which are sequentially stacked in a direction away from the substrate 1, and the pixel opening 21 exposes a portion of the first electrode 4. Since the light-emitting portion 5 is not easy to overlap with the first isolation structure 31 along the moving direction of the evaporation source of the light-emitting material layer (the first direction a), leakage problems are not easy to occur between adjacent light-emitting units 7 in the first direction a. Since the light-emitting portion 5 is not easy to overlap with the isolation structure in the first direction a, the overlap thickness of the second electrode 6 and the first isolation structure 31 in the first direction a is thicker, the overlap effect is better, and the corresponding light-emitting unit 7 is not easy to produce dark spots.

[0176] One light-emitting unit 7 is located in one pixel opening 21, and one isolation opening 8 has multiple pixel openings 21, so there are multiple light-emitting units 7 in one isolation opening 8. Since the light-emitting colors of the light-emitting units 7 located in the same isolation opening 8 are the same, the light-emitting parts 5 of the multiple light-emitting units 7 located in the same isolation opening 8 are connected in sequence, and the second electrodes 6 of the multiple light-emitting units 7 located in the same isolation opening 8 are connected in sequence, so it is not easy to have leakage problems between the light-emitting units 7 located in the same isolation opening 8, and it is not easy for the light-emitting units 7 located in the same isolation opening 8 to have dark spots.

[0177] Even if the second electrode 6 of a light-emitting unit 7 arranged along the second direction b overlaps abnormally with the first isolation structure 31, the second electrodes 6 between the light-emitting units 7 located in the same isolation opening 8 are interconnected to assist in power supply, thereby effectively improving the problem of dark spots generated by the light-emitting unit 7, and ultimately improving the display effect of the display panel formed by the above method.

[0178] In some possible implementations, the step of forming a pixel defining layer 2 and an isolation structure on one side of the substrate 1 includes:

[0179] See also Fig. 27 , a pixel defining material layer 13 and an isolation material layer 14 are sequentially formed on one side of the substrate 1 .

[0180] Please see again Figure 2 and Fig. 9 , patterning the isolation material layer 14 through a semi-transparent mask to form an isolation structure 3, the isolation structure 3 also includes a second isolation structure 32, the second isolation structure 32 is located between at least part of the adjacent light-emitting units 7 in the same isolation opening 8, the isolation structure 3 includes a first isolation portion 301 and a second isolation portion 302 which are stacked in sequence along a direction away from the substrate 1, the orthographic projection of the side of the first isolation portion 301 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation portion 302 on the substrate 1, the distance between the orthographic projection of the side of the first isolation portion 301 of the first isolation structure 31 close to the substrate 1 on the substrate 1 and the orthographic projection of the second isolation portion 302 on the substrate 1 is a first distance D1, the distance between the orthographic projection of the side of the first isolation portion 301 of the second isolation structure 32 close to the substrate 1 on the substrate 1 and the orthographic projection of the second isolation portion 302 on the substrate 1 is a second distance D2, and the second distance D2 is greater than the first distance D1.

[0181] The pixel definition material layer 13 is patterned to form a pixel definition layer 2 .

[0182] The first distance D1 can be equal to the distance between the orthographic projection of the first isolation part 301 of the isolation structure in the related art on the substrate 1 and the orthographic projection of the second isolation part 302 on the substrate 1, and the etching time of the first isolation part 301 of the second isolation structure 32 is extended to make the second distance D2 greater than the first distance D1. Since the second distance D2 is greater than the first distance D1, after the light-emitting material layer is separated by the second isolation structure 32, the light-emitting part 5 is not easy to overlap with the second isolation structure 32, and after the second electrode material layer is separated by the second isolation structure 32, the overlap effect of the second electrode 6 and the second isolation structure 32 is better. In this way, when the second isolation structure 32 is set, it is not easy to cause leakage problems between the light-emitting units 7 arranged along the second direction b in the same isolation opening 8, and it is not easy for the light-emitting units 7 arranged along the second direction b in the same isolation opening 8 to produce dark spots.

[0183] The second isolation structure 32 can also divide an isolation opening 8 into multiple isolation sub-openings 81, and one isolation sub-opening 81 corresponds to one area. Therefore, the second isolation structure 32 divides the light-emitting unit 7 located in the same isolation opening 8 into multiple areas. If the packaging of a certain area is abnormal, the abnormal packaging can be limited to the area without affecting the packaging of the light-emitting units 7 in other areas, thereby improving the packaging effect of the display panel.

[0184] Preferably, after the step of forming the pixel defining layer 2 and the isolation structure 3 on one side of the substrate 1, the method further includes:

[0185] Please see again Fig. 9 A defining wall 9 is formed on a side of the pixel defining layer 2 away from the substrate 1 , and the defining wall 9 is located between at least part of adjacent light emitting units 7 in the same isolation opening 8 .

[0186] The defining wall 9 can be formed of organic material or inorganic material. The light emitting portion 5 and the second electrode 6 of the light emitting unit 7 in the same isolation opening 8 extend from the sidewall of the defining wall 9 to the side of the defining wall 9 away from the substrate 1 .

[0187] In some possible implementations, the present application further provides an electronic device, the electronic device comprising the display panel of the present application, or comprising a display panel prepared by the method for preparing a display panel of the present application. The electronic device may include a device with image processing capabilities, such as a server, a personal computer, a laptop computer, etc. Since the electronic device comprises the display panel of the present application, the display quality of the electronic device is better.

[0188] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0189] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; A pixel defining layer, located on one side of the substrate, and having a plurality of pixel openings disposed on the pixel defining layer; an isolation structure, located on a side of the pixel defining layer away from the substrate, the isolation structure comprising a first isolation structure, the first isolation structure enclosing a plurality of isolation openings, the isolation openings being connected to the pixel openings, an orthographic projection of one isolation opening on the substrate covering an orthographic projection of a plurality of pixel openings on the substrate, and the plurality of isolation openings being arranged along a first direction; A light-emitting unit, wherein the light-emitting unit is at least located in the pixel opening, the light-emitting colors of the light-emitting units located in the same isolation opening are the same, and at least two of the multiple pixel openings located in the same isolation opening are arranged along the second direction.

2. The display panel according to claim 1, characterized in that: The isolation opening extends along the second direction; Preferably, the light emitting units in two adjacent isolation openings arranged along the first direction emit light of different colors; Preferably, the second direction intersects the first direction; Preferably, the second direction is perpendicular to the first direction; Preferably, the light-emitting unit comprises a first electrode, a light-emitting portion and a second electrode which are sequentially stacked in a direction away from the substrate, and the pixel opening exposes a portion of the first electrode; Preferably, the light-emitting parts of the plurality of light-emitting units located in the same isolation opening are connected; Preferably, the second electrodes of the plurality of light emitting units located in the same isolation opening are electrically connected.

3. The display panel according to claim 1 or 2, characterized in that: The display panel further comprises a defining wall located at a side of the pixel defining layer away from the substrate, wherein the defining wall is located between at least a portion of adjacent light emitting units in the same isolation opening; Preferably, a defining wall is provided between adjacent light-emitting units located in the same isolation opening; Preferably, the defining wall extends along the first direction and contacts the first isolation structure; Preferably, along a direction perpendicular to the base plate, the cross-sectional shape of the defining wall is trapezoidal; Preferably, along a direction perpendicular to the base plate, a cross-sectional shape of the defining wall is an isosceles trapezoid.

4. The display panel according to claim 1, characterized in that: The isolation structure includes a second isolation structure, and the second isolation structure is located between at least part of adjacent light-emitting units in the same isolation opening; Preferably, the second isolation structure and the first isolation structure are enclosed to form an isolation sub-opening, and the orthographic projection of the isolation sub-opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

5. The display panel according to claim 4, characterized in that: The orthographic projection of the spacer opening on the substrate covers the orthographic projections of at least two pixel openings arranged along the second direction on the substrate.

6. The display panel according to claim 4, characterized in that: The display panel further comprises a defining wall located at a side of the pixel defining layer away from the substrate, wherein the defining wall is located between at least a portion of adjacent light emitting units in the same isolator opening; Preferably, a boundary wall is provided between adjacent light-emitting units located in the same insulator opening.

7. The display panel according to claim 4, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within the orthographic projection of the second isolation portion on the substrate; Preferably, the distance between the orthographic projection of the side of the first isolation portion of the first isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a first distance, and the distance between the orthographic projection of the side of the first isolation portion of the second isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a second distance, and the second distance is greater than the first distance; Preferably, the difference between the second distance and the first distance is greater than or equal to 0.3 μm and less than or equal to 1 μm; Preferably, the second distance is greater than or equal to 0.5 μm and less than or equal to 1 μm; Preferably, the second electrode of the light-emitting unit is electrically connected to the first isolation portion; and / or, the first isolation structure further comprises a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode of the light-emitting unit is electrically connected to the third isolation portion; Preferably, the material of the third isolation portion includes molybdenum or titanium; and / or the material of the first isolation portion includes aluminum or copper; and / or the material of the second isolation portion includes titanium or molybdenum.

8. The display panel according to any one of claims 4 to 7, characterized in that: The light-emitting unit comprises a first electrode, a light-emitting portion, and a second electrode which are sequentially stacked in a direction away from the substrate, and the pixel opening exposes a portion of the first electrode; Preferably, the light-emitting parts of the plurality of light-emitting units located in the same opening of the insulator are connected; Preferably, the second electrodes of the plurality of light-emitting units located in the same insulator opening are connected; Preferably, the second electrode overlaps the first isolation structure; Preferably, the second electrode overlaps the second isolation structure.

9. The display panel according to claim 8, characterized in that: An orthographic projection of the light emitting portion on the substrate is spaced apart from an orthographic projection of a side of the first isolation structure close to the substrate on the substrate; Preferably, an orthographic projection of the light emitting portion on the substrate is spaced from an orthographic projection of a side of the second isolation structure close to the substrate on the substrate.

10. The display panel according to claim 8, characterized in that: The display panel further comprises a first encapsulation layer located on a side of the second electrode away from the substrate, the first encapsulation layer comprising a plurality of encapsulation units arranged at intervals, at least a portion of the encapsulation units extending from a side of the first isolation structure toward the isolation opening to a side of the first isolation structure away from the substrate; Preferably, at least a portion of the packaging unit extends from a side of the second isolation structure toward the isolation opening to a side of the second isolation structure away from the substrate; Preferably, the packaging unit located in the same insulator opening is arranged on the entire surface; Preferably, adjacent packaging units are spaced apart on a side of the first isolation structure away from the substrate; Preferably, adjacent packaging units are spaced apart on a side of the second isolation structure away from the substrate; Preferably, the orthographic projection of the packaging unit on the substrate covers the orthographic projection of at least one of the light-emitting units on the substrate.

11. The display panel according to claim 10, characterized in that: The display panel further comprises a second encapsulation layer located on a side of the first encapsulation layer away from the substrate; Preferably, the display panel further comprises a third encapsulation layer located on a side of the second encapsulation layer away from the substrate; Preferably, the materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials; Preferably, the material of the second encapsulation layer includes organic material.

12. A display panel, characterized in that: The display panel comprises: substrate; an isolation structure, located on one side of the substrate, the isolation structure encloses a plurality of isolation openings, the isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, the orthographic projection of the side of the first isolation portion away from the substrate on the substrate being located within the orthographic projection of the second isolation portion on the substrate; In which, the distance between the orthographic projection of the first isolation portion extending along the first direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate is greater than the distance between the orthographic projection of the first isolation portion extending along the second direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate, and the first direction and the second direction intersect.

13. The display panel according to claim 12, characterized in that: The difference between the distance between the orthographic projection of the first isolation portion extending along the first direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate and the distance between the orthographic projection of the first isolation portion extending along the second direction on the substrate and the orthographic projection of the corresponding second isolation portion on the substrate is greater than or equal to 0.3 μm and less than or equal to 1 μm; Preferably, a distance between an orthographic projection of the first isolation portion extending along the first direction on the substrate and an orthographic projection of the corresponding second isolation portion on the substrate is greater than or equal to 0.5 μm and less than or equal to 1 μm.

14. A method for preparing a display panel, characterized in that: The method comprises: providing a substrate; A pixel defining layer and an isolation structure are formed on one side of the substrate, wherein the pixel defining layer is provided with a plurality of pixel openings, the isolation structure is located on a side of the pixel defining layer away from the substrate, the isolation structure comprises a first isolation structure, the first isolation structure encloses and forms a plurality of isolation openings, the isolation openings are connected to the pixel openings, an orthographic projection of one isolation opening on the substrate covers an orthographic projection of a plurality of pixel openings on the substrate, and the plurality of isolation openings are arranged along a first direction; A light-emitting unit is formed at least in the pixel opening, the light-emitting units in the same isolation opening emit the same light color, and at least two of the plurality of pixel openings in the same isolation opening are arranged along the second direction.

15. The method for preparing a display panel according to claim 14, characterized in that: The step of forming a pixel defining layer and an isolation structure on one side of the substrate comprises: forming a pixel defining material layer and an isolation material layer in sequence on one side of the substrate; The isolation material layer is patterned through a semi-transparent mask to form an isolation structure, wherein the isolation structure further comprises a second isolation structure, wherein the second isolation structure is located between at least part of the adjacent light-emitting units in the same isolation opening, wherein the isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within the orthographic projection of the second isolation portion on the substrate, wherein the distance between the orthographic projection of a side of the first isolation portion of the first isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a first distance, and the distance between the orthographic projection of a side of the first isolation portion of the second isolation structure close to the substrate on the substrate and the orthographic projection of the second isolation portion on the substrate is a second distance, and the second distance is greater than the first distance; patterning the pixel definition material layer to form a pixel definition layer; Preferably, after the step of forming a pixel defining layer and an isolation structure on one side of the substrate, the method further comprises: A defining wall is formed on a side of the pixel defining layer away from the substrate, and the defining wall is located between at least a portion of adjacent light emitting units in the same isolation opening.

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

Images