Method for manufacturing display panel, display panel and electronic apparatus

Abstract

To provide a manufacturing method capable of advantageously improving the display effect of a display panel; a display panel; and an electronic apparatus.SOLUTION: A method for manufacturing a display panel comprising: subjecting a second isolation part in an isolation structure to cleaning so that a first isolation part includes an extension part extended to a second isolation part before manufacturing a light emitting element; and overlapping and connecting at least a part of a film layer in the light emitting element with the extension part in the process of subsequently manufacturing the light emitting element can improve an overlap and connection effect between the light emitting element and the isolation structure and improve the display effect of the display panel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application bearing application number 2024104491326 and entitled "Display panel, display panel manufacturing method and electronic device," filed with the China Patent Office on April 15, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of displays, and more particularly to a method for manufacturing a display panel, a display panel, and an electronic device. [Background technology]

[0003] Flat panel displays based on technologies such as organic light emitting diodes (OLEDs) and light emitting diodes (LEDs) have advantages such as high image quality, low power consumption, a thin body, and a wide range of applications. As a result, they are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers, and have become the mainstream display panel.

[0004] However, the display panel still has some urgent problems to be solved. Summary of the Invention [Problem to be solved by the invention]

[0005] To overcome the technical problems mentioned in the background art above, the present application provides a display panel manufacturing method, a display panel, and an electronic device. [Means for solving the problem]

[0006] In a first aspect of the present application, Providing a substrate; fabricating and forming an isolation structure on one side of the substrate, the isolation structure being surrounded and closed by the substrate to form a plurality of isolation openings, the isolation structure including a first isolation portion, a second isolation portion, and a third isolation portion sequentially stacked in a direction away from the substrate, the orthogonal projection of the second isolation portion on the substrate being positioned within the orthogonal projection of the third isolation portion on the substrate; performing a cleaning process on the second isolation portion of the isolation structure so that the first isolation portion has a protruding portion that protrudes relatively toward the isolation opening relative to the second isolation portion; and fabricating a light-emitting element in the isolation opening such that at least a part of a film layer is overlapped and connected to the protruding portion.

[0007] In a second aspect of the present application, A substrate; an isolation structure located on one side of the substrate, surrounding and closing the substrate to form a plurality of isolation openings, the isolation structure comprising a first isolation portion, a second isolation portion, and a third isolation portion sequentially stacked in a direction away from the substrate, wherein an orthogonal projection of the second isolation portion on the substrate is located within an orthogonal projection of the first isolation portion on the substrate, and an orthogonal projection of the third isolation portion on the substrate is located within an orthogonal projection of the third isolation portion on the substrate; a light-emitting element at least partially located within the isolation opening, the light-emitting element comprising a first light-emitting element and a second light-emitting element of different light colors, the isolation opening comprising a first isolation opening for accommodating the first light-emitting element and a second isolation opening for accommodating the second light-emitting element; a contour line of the third isolation portion when orthogonally projected on the substrate includes a first contour line corresponding to the first isolation opening and a second contour line corresponding to the second isolation opening, and a contour line of the first isolation portion when orthogonally projected on the substrate includes a third contour line corresponding to the first isolation opening and a fourth contour line corresponding to the second isolation opening, The display panel further provides a display panel in which there is a first distance between the corresponding first contour line and the corresponding third contour line, and a second distance between the corresponding second contour line and the corresponding fourth contour line that is not equal to the first distance.

[0008] In a third aspect of the present application, A substrate; a pixel definition layer located on one side of the substrate and having pixel openings; an isolation structure located on a side of the pixel definition layer away from the substrate, the isolation structure being surrounded and closed by the substrate to form a plurality of isolation openings, the isolation structure comprising a first isolation portion, a second isolation portion, and a third isolation portion which are sequentially stacked in a direction away from the substrate, the orthogonal projection of the second isolation portion on the substrate being located within the orthogonal projection of the first isolation portion on the substrate, the orthogonal projection of the third isolation portion on the substrate being located within the orthogonal projection of the pixel opening on the substrate; a light-emitting element at least partially located within the isolation opening, the light-emitting element comprising a first light-emitting element and a second light-emitting element of different light-emitting colors, the isolation opening comprising a first isolation opening used to accommodate the first light-emitting element and a second isolation opening used to accommodate the second light-emitting element; The display panel further provides a first pitch between one end of the first isolation portion close to the pixel opening and a sidewall of the corresponding pixel opening in the first isolation opening, and a second pitch different from the first pitch between one end of the first isolation portion close to the pixel opening and a sidewall of the corresponding pixel opening in the second isolation opening.

[0009] In a fourth aspect of the present application, A substrate; an isolation structure located on one side of the substrate, surrounding and closing the substrate to form a plurality of isolation openings, the isolation structure comprising a first isolation portion, a second isolation portion, and a third isolation portion sequentially stacked in a direction away from the substrate, wherein an orthogonal projection of the second isolation portion on the substrate is located within an orthogonal projection of the first isolation portion on the substrate, and an orthogonal projection of the third isolation portion on the substrate is located within an orthogonal projection of the third isolation portion on the substrate; a light emitting element at least partially located within the isolation opening; the isolation structure comprises a seventh isolation structure and an eighth isolation structure, and the emission color of at least one light-emitting element located in the isolation openings on both opposing sides of the seventh isolation structure is different from the emission color of at least one light-emitting element located in the isolation openings on both opposing sides of the eighth isolation structure; Further provided is a display panel in which, in a cross section perpendicular to the plane on which the substrate is located and passing through the central connecting line of two adjacent isolation openings, the orthogonal projection of the third isolation portion of the seventh isolation structure on the substrate has a 19th length, the orthogonal projection of the third isolation portion of the eighth isolation structure on the substrate has a 20th length, the orthogonal projection of the second isolation portion of the seventh isolation structure on the substrate has a 21st length, and the orthogonal projection of the second isolation portion of the eighth isolation structure on the substrate has a 22nd length, the 19th length and the 20th length being the same, and the 21st length and the 22nd length being different.

[0010] In a fifth aspect of the present application, there is further provided an electronic device comprising a display panel manufactured in any one of the possible implementations of the first aspect, or a display panel in any one of the possible implementations of the second, third and fourth aspects. [Effects of the Invention]

[0011] The present application provides a method for manufacturing a display panel, a display panel, and an electronic device, in which, before manufacturing a light-emitting element, a cleaning process is performed on the second isolation portion in the isolation structure so that the first isolation portion has a protruding portion that protrudes relative to the second isolation portion, thereby allowing at least a portion of the film layer in the light-emitting element to be overlap-connected to this protruding portion in the subsequent process of manufacturing the light-emitting element, improving the overlap-connection effect between the light-emitting element and the isolation structure and favoring the improvement of the display effect of the display panel. [Brief explanation of the drawings]

[0012] In order to more clearly explain the technical aspects in the embodiments of the present application, the drawings necessary to be used in the embodiments will be briefly introduced below. However, since the drawings shown below are only some embodiments of the present application, they should not be considered as limiting the scope, and it should be understood that a person skilled in the art can further obtain other related drawings according to these drawings without paying any creative labor.

[0013] [Figure 1]1A to 1C are schematic diagrams illustrating a flow of a manufacturing method for a display panel according to an embodiment of the present invention. [Figure 2] FIG. 2 is a manufacturing process diagram corresponding to FIG. 1. [Figure 3] 1A to 1C are schematic diagrams illustrating a part of the flow of a method for manufacturing a display panel according to the present embodiment. [Figure 4] FIG. 4 is a manufacturing process diagram corresponding to FIG. 3. [Figure 5] 1 illustrates a manufacturing process diagram of a part of a process according to an embodiment of the present application. [Figure 6] 2 illustrates a manufacturing process diagram of a part of a process according to an embodiment of the present application. [Figure 7] 10 illustrates an orthogonal projection schematic view of the first isolation portion and the third isolation portion at the positions of the first isolation opening and the second isolation opening. [Figure 8] FIG. 8 is a schematic cross-sectional view taken along the line AA in FIG. 7. [Figure 9] 10 illustrates an orthogonal projection schematic view of the first isolation portion and the third isolation portion at the positions of the first isolation opening, the second isolation opening, and the third isolation opening. [Figure 10] FIG. 10 is a schematic cross-sectional view taken along the line AA in FIG. [Figure 11] 1 illustrates one example of a structural schematic diagram of a film layer of a part of a display panel according to an embodiment of the present application. [Figure 12] 2 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 13] 3 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 14] 4 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 15] 5 is a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 16] 6 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 17] 7 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 18] 1 illustrates one example of a distribution diagram of a light-emitting device according to an embodiment of the present application. [Figure 19a] 10 illustrates a size schematic of isolation structures between the same isolation openings. [Figure 19b] 10 illustrates a size schematic of isolation structures between the same isolation openings. [Figure 19c] 10 illustrates a size schematic of isolation structures between the same isolation openings. [Figure 20a] 10 illustrates a schematic diagram of the size of isolation structures between different isolation openings; [Figure 20b] 10 illustrates a schematic diagram of the size of isolation structures between different isolation openings; [Figure 20c] 10 illustrates a schematic diagram of the size of isolation structures between different isolation openings; [Figure 21] 1 illustrates a possible structural schematic diagram of an isolation structure according to an embodiment of the present application; [Figure 22] 8 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 23] 9 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 24] 10 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 25] 11 illustrates a structural schematic diagram of a part of a film layer of a display panel according to an embodiment of the present application. [Figure 26] 2 illustrates a second distribution schematic diagram of a light-emitting device according to an embodiment of the present application. [Figure 27a] 10 illustrates a schematic diagram of the size of an isolation structure between adjacent isolation openings. [Figure 27b] 10 illustrates a schematic diagram of the size of an isolation structure between adjacent isolation openings. DETAILED DESCRIPTION OF THE INVENTION

[0014] In order to clarify the objectives, technical aspects and advantages of the embodiments of the present application, the technical aspects of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is clear that the described embodiments are only some embodiments of the present application and not all embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0015] In the description of this application, the orientations or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings or are the orientations or positional relationships always present when the product of this application is in use, and are merely for the purpose of facilitating and simplifying the description of this application. They do not indicate or imply that such devices or elements must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as limiting this application. Furthermore, the terms "first," "second," and "third" are merely for the purpose of distinction and explanation, and cannot be understood as indicating or implying relative importance.

[0016] It should be noted that different features in the embodiments of the present application can be combined with each other unless they conflict.

[0017] Increasing the density of light-emitting elements (i.e., pixel density) in a display panel is an important means for improving the display effect, but currently, display panels manufactured using fine metal mask (FMM) technology are limited by the technology and cannot achieve a higher density of light-emitting elements. Through long-term research, the inventors have found that, to solve the technical problem of not being able to achieve a higher density of light-emitting elements, some display panels are provided with isolation structures, and when the light-emitting material layer and the cathode are vapor-deposited on the entire surface, the light-emitting material layer and the cathode can be separated at the position of the isolation structures, and light-emitting elements of different colors can be formed in different isolation openings through multiple vapor deposition and multiple etching processes, i.e., the light-emitting elements can be patterned.

[0018] Patent CN118251982A, Patent 202410864269.8, Patent PCT / CN2024 / 098407, Patent PCT / CN2024 / 102783, Patent PCT / CN2024 / 098217, Patent PCT / CN2024 / 100935, Patent PCT / CN2024 / 102785, Patent PCT / CN2024 / 099419, Patent PCT / CN2024 / 099072, and Patent CN116685174A describe relevant technical aspects of isolation structures (also called blocking structures or isolation posts) and sealing layers, the contents of which are incorporated herein by reference.

[0019] The inventors have found that there may be a certain difference in the display uniformity of the display panel, which will hinder the overall display effect of the display panel. After analyzing the causes of the above technical problems, the inventors have found that the main cause is poor overlapping connection between the light emitting element and the isolation structure.

[0020] 1 and 2, Fig. 1 illustrates a schematic diagram of a flow of a method for manufacturing a display panel according to this embodiment, and Fig. 2 illustrates a manufacturing process diagram corresponding to Fig. 1. Hereinafter, the method for manufacturing a display panel according to this embodiment will be described in detail in conjunction with Figs. 1 and 2.

[0021] In step S11, a substrate 11 is provided.

[0022] In this embodiment, the substrate 11 has a multi-layer structure, including at least a plurality of conductive layers and insulating layers positioned between adjacent conductive layers, in which pixel circuits are formed to provide driving signals for the light-emitting elements, and the conductive layers may be metal conductive layers.

[0023] In step S12, the isolation structure 12 is fabricated and formed on one side of the substrate 11.

[0024] In this embodiment, the isolation structure 12 is provided with a plurality of isolation openings 1201. In the direction away from the substrate 11 (the Z direction in the figure), the isolation structure 12 includes a first isolation portion 121, a second isolation portion 122, and a third isolation portion 123 that are sequentially stacked, and the orthogonal projection of the second isolation portion 122 on the substrate 11 is located within the orthogonal projection of the third isolation portion 123 on the substrate 11.

[0025] In step S13, the second isolation portion 122 of the isolation structure 12 is subjected to a cleaning process so that the first isolation portion 121 has a protruding portion 1211 that protrudes relatively toward the isolation opening 1201 relative to the second isolation portion 122.

[0026] In step S14, the light emitting element 13 is fabricated in the isolating opening 1201 so that at least some of the film layers of the light emitting element 13 are overlapped and connected to the protruding portion 1211.

[0027] In this embodiment, film layers of the light-emitting element 13 are fabricated within the isolation opening 1201, and at least a portion of the film layer of the second light-emitting element 13 is overlappingly connected to the protruding portion 1211. For example, the light-emitting material layer of the light-emitting element 13 and an electrode (hereinafter referred to as the second electrode) located on the side of the light-emitting material layer away from the substrate 11 may be overlappingly connected to the protruding portion 1211. At least a portion of the film layer of the light-emitting element 13 may further be overlappingly connected to the second isolation portion 122 via the protruding portion 1211. For example, the second electrode of the light-emitting element 13 may be overlappingly connected to the second isolation portion 122 via the protruding portion 1211. The "overlapping connection" here means connection or contact, and for example, the second electrode of the light-emitting element 13 is connected to the protruding portion 1211.

[0028] In the above embodiment, before manufacturing the light-emitting element 13, a cleaning process is performed on the second isolation portion 122 in the isolation structure 12 so that the first isolation portion 121 has a protruding portion 1211 that protrudes relative to the second isolation portion 122. This allows at least some of the film layers in the light-emitting element 13 to be overlap-connected to this protruding portion 1211 in the subsequent process of manufacturing the light-emitting element 13, improving the overlap-connection effect between the light-emitting element 13 and the isolation structure 12 and favoring the improvement of the display effect of the display panel 1.

[0029] In this embodiment, the light emitting element 13 includes a first light emitting element 13a and a second light emitting element 13b having different emission colors, and the isolating opening 1201 includes a first isolating opening 1201a and a second isolating opening 1201b. The following describes an example in which the first light emitting element 13a and the second light emitting element 13b are manufactured in a chronological order. Before manufacturing the first light emitting element 13a, the first isolating portion 121 in the isolating opening 1201 is made to protrude relative to the second isolating portion 122. Specifically, in the first isolating opening 1201a, the first isolating portion 121 has a first protruding portion 1211 that protrudes relative to the second isolating portion 122.

[0030] 3 and 4, before step S13, the manufacturing method of the display panel according to this embodiment further includes the following steps.

[0031] In step S15, the film layers of the first light-emitting element 13 are fabricated in the first isolation opening 1201a and the second isolation opening 1201b.

[0032] For example, the light emitting material layer 132 and the second electrode 133 of the first light emitting element 13a can be fabricated. After fabrication of the first light emitting element 13a is completed, the sealing unit 1511 of the first light emitting element 13a can be fabricated. In the first isolation opening 1201a, at least a portion of the film layer of the first light emitting element 13a is overlappingly connected to the first protruding portion 121. For example, the light emitting material layer 132 and the second electrode 133 of the first light emitting element 13a are overlappingly connected to the first protruding portion 12111, respectively, or the second electrode 133 of the first light emitting element 13a is overlappingly connected to the first protruding portion 12111.

[0033] In step S16, the film layer of the first light emitting element 13a fabricated at the position of the second isolation opening 1201b is removed by etching.

[0034] In this step, the film layer of the first light-emitting element 13a fabricated in the second isolation opening 1201b can be removed. For example, by removing the light-emitting material layer 132, the second electrode 133 and the sealing unit 1511 of the first light-emitting element 13a fabricated in the second isolation opening 1201b, the film layer of the first light-emitting element 13a is located only in the first isolation opening 1201a.

[0035] In this embodiment, referring to FIG. 5, step S13 can be realized in the following manner.

[0036] A cleaning solution is used to clean the second isolation portion 122 around the second isolation opening 1201b so that the first isolation portion 121 has a second protruding portion 12112 that protrudes relative to the second isolation portion 122 at the second isolation opening 1201b. The cleaning solution may be an acidic etching solution or an alkaline etching solution, and the cleaning solution can be selected according to the materials of the second isolation portion 122 and the first isolation portion 121. The etching rate of the cleaning solution for the second isolation portion 122 is higher than the etching rate of the cleaning solution for the first isolation portion 121, thereby ensuring that the first isolation portion 121 can protrude relative to the second isolation portion 122 after cleaning with the cleaning solution.

[0037] In this embodiment, referring again to FIG. 5, step S14 can be realized in the following manner.

[0038] The film layers of the second light-emitting element 13b are fabricated in the second isolation opening 1201b. For example, the light-emitting material layer 132 and the second electrode 133 of the second light-emitting element 13b can be fabricated. After the second electrode 133 is fabricated, the sealing unit 1511 of the second light-emitting element 13b can be fabricated. In the second isolation opening 1201b, at least a portion of the film layers of the second light-emitting element 13b are overlappingly connected to the second protruding portion 12112. For example, the light-emitting material layer 132 and the second electrode 133 of the second light-emitting element 13b are overlappingly connected to the second protruding portion 12112, or the second electrode 133 of the second light-emitting element 13b is overlappingly connected to the second protruding portion 12112.

[0039] Furthermore, in this embodiment, the light emitting element 13 further includes a third light emitting element 13c having an emission color different from the emission color of the first light emitting element 13a and the emission color of the second light emitting element 13b. The isolation opening 1201 further includes a third isolation opening 1201c, and the third light emitting element 13c is fabricated in the third isolation opening 1201c. After the second light emitting element 13b is fabricated in the second isolation opening 1201b, referring to FIG. 6, step S15 can be achieved in the following manner.

[0040] First, the film layer of the second light emitting element 13b fabricated at the position of the third isolation opening 1201c is removed by etching.

[0041] For example, the light emitting material layer 132, the second electrode 133 and the sealing unit 1511 of the second light emitting element 13b fabricated in the third isolation opening 1201c are removed.

[0042] Next, an etching solution is used to perform a cleaning process on the second isolating portion 122 on the periphery of the third isolating opening 1201c so that the first isolating portion 121 has a third protruding portion 12113 that protrudes relatively from the second isolating portion 122 at the third isolating opening 1201c. This process is similar to the above-described process of performing a cleaning process on the second isolating portion 122 on the periphery of the second isolating opening 1201b to obtain the second protruding portion 12112, and therefore will not be described again here.

[0043] In this embodiment, referring again to FIG. 6, step S16 can be realized in the following manner.

[0044] The film layers of the third light-emitting element 13c are fabricated in the third isolation opening 1201c, and at least a portion of the film layers fabricated in the third isolation opening 1201c may include at least the light-emitting material layer 132, the second electrode 133, and the sealing unit 1511. In the third isolation opening 1201c, at least a portion of the film layers of the third light-emitting element 13c are overlappingly connected to the third protruding portion 12113, for example, the light-emitting material layer 132 and the second electrode 133 of the third light-emitting element 13c are overlappingly connected to the third protruding portion 12113, or the second electrode 133 of the third light-emitting element 13c is overlappingly connected to the third protruding portion 12113.

[0045] In the technical aspects of the above embodiments, a step of cleaning the second isolation portion 122 in the isolation opening 1201 is added between the step of etching and removing the film layer of the previously manufactured light-emitting element 13 in the isolation opening 1201 (e.g., the second isolation opening 1201b or the third isolation opening 1201c) and the step of manufacturing the film layer of a new light-emitting element in this isolation opening. This overcomes the technical problem that the protruding portion of the first isolation portion 121 relative to the second isolation portion 122 becomes shorter when the film layer of the previously manufactured light-emitting element 13 is etched away, thereby affecting the overlap connection between the later manufactured light-emitting element 13 and the isolation structure 12, and improves the display effect of the display panel 1.

[0046] Based on the same inventive concept, this embodiment further provides a display panel, which can be manufactured using the manufacturing method of the above embodiment. Referring to Figures 7 and 8, Figure 7 illustrates a schematic distribution diagram of the first isolation opening and the second isolation opening in the display panel according to this embodiment, and Figure 8 illustrates a schematic cross-sectional diagram along the AA direction in Figure 1. In this embodiment, the display panel 1 includes a substrate 11, an isolation structure 12, and a light-emitting element 13. The substrate 11 has a multi-layer structure, including at least a plurality of conductive layers and insulating layers positioned between adjacent conductive layers, within which pixel circuits are formed to provide driving signals for the light-emitting elements, and the conductive layers may be metal conductive layers.

[0047] The isolation structure 12 is located on one side of the substrate 11 and is provided with a plurality of isolation openings 1201. In a direction away from the substrate 11, the isolation structure 12 includes a first isolation portion 121, a second isolation portion 122, and a third isolation portion 123 which are sequentially stacked. The orthogonal projection of the second isolation portion 122 on the substrate 11 is located within the orthogonal projection of the first isolation portion 121 on the substrate 11, and is located within the orthogonal projection of the third isolation portion 123 on the substrate 11. The orthogonal projection of the first isolation portion 121 on the substrate 11 is located within the orthogonal projection of the third isolation portion 123 on the substrate 11. In a cross section perpendicular to the plane on which the substrate 11 is located and along the center connecting line between adjacent isolation openings (the direction of cross-sectional line AA in FIG. 7), the cross section of the isolation structure 12 is U-shaped.

[0048] The light-emitting element 13 is at least partially located within the isolation opening 1201 and includes a first light-emitting element 13a and a second light-emitting element 13b of different light colors, and the isolation opening 1201 includes a first isolation opening 1201a and a second isolation opening 1201b, of which at least a portion of the first light-emitting element 13a is accommodated within the first isolation opening 1201a and at least a portion of the second light-emitting element 13b is accommodated within the second isolation opening 1201b.

[0049] In this embodiment, the contour lines of the third isolation portion 123 when orthogonally projected on the substrate 11 include a first contour line 1231 corresponding to the first isolated opening 1201a and a second contour line 1232 corresponding to the second isolated opening 1201b. The contour lines of the first isolation portion 121 when orthogonally projected on the substrate 11 include a third contour line 1212 corresponding to the first isolated opening 1201a and a fourth contour line 1213 corresponding to the second isolated opening 1201b.

[0050] There is a first distance d1 between the corresponding first contour line 1231 and the third contour line 1212, and a second distance d2 between the corresponding second contour line 1232 and the fourth contour line 1213, where the first distance d1 and the second distance d2 are not equal. Corresponding contour lines refer to contour lines located on the same side of the same isolating opening 1201a, and the corresponding contour lines may be parallel to each other. For example, the first distance d1 between the corresponding first contour line 1231 and the third contour line 1212 is the pitch between the two parallel contour lines of the first contour line 1231 and the third contour line 1212 located on the same side of the first isolating opening 1201a.

[0051] As can be seen from the manufacturing method of the display panel in the previous embodiment, the isolation structure 12 around the second isolation opening 1201b has undergone one etching process to remove the film layer of the light-emitting element in the isolation opening, and the first isolation portion 121 in the second isolation opening 1201b is partially etched, but the third isolation portion 123 is hardly affected by the etching solution, so the first distance d1 and the second distance d2 are not equal. In this embodiment, the first distance d1 is smaller than the second distance d2.

[0052] In this embodiment, the material of the first isolation part 121 includes molybdenum or titanium, and / or the material of the second isolation part 122 includes aluminum, silver or copper, and / or the material of the third isolation part 123 includes titanium or molybdenum. Preferably, the material of the first isolation part 121 includes molybdenum, the material of the second isolation part 122 includes aluminum, and the material of the third isolation part 123 includes titanium.

[0053] 9 and 10 , in a possible embodiment, the light-emitting element 13 further includes a third light-emitting element 13c having an emission color different from the emission colors of the first light-emitting element 13a and the second light-emitting element 13b. The isolated opening 1201 further includes a third isolated opening 1201c, and at least a portion of the third light-emitting element 13 is located within the third isolated opening 1201c. The contour line of the third isolated portion 123 when orthogonally projected on the substrate 11 includes a fifth contour line 1233 corresponding to the third isolated opening 1201c, and the contour line of the first isolated portion 121 when orthogonally projected on the substrate 11 corresponds to a sixth contour line 1214 of the third isolated opening, with a third distance d3 between the corresponding fifth contour line 1233 and sixth contour line 1214. The first distance d1, the second distance d2, and the third distance d3 are not equal.

[0054] Similarly, as can be seen from the manufacturing method of the display panel in the previous embodiment, the isolation structure 12 around the third isolation opening 1201c undergoes etching twice to remove the film layer of the light-emitting element in the isolation opening 1201, and the first isolation portion 121 in the third isolation opening 1201c is etched twice, but the third isolation portion 123 is hardly affected by the etching solution, so the first distance d1, the second distance d2, and the third distance d3 are not equal to each other. In this embodiment, the first distance d1, the second distance d2, and the third distance d3 increase in this order.

[0055] 11, in the first isolation opening 1201a, the first isolation portion 121 has a first overhang length L1 relative to the second isolation portion 122, and in the second isolation opening 1201b, the first isolation portion 121 has a second overhang length L2 relative to the second isolation portion 122. The first overhang length L1 and the second overhang length L2 are less than or equal to 0.3 μm, or less than or equal to 0.2 μm. The first overhang length L1 and the second overhang length L2 are greater than or equal to 0.1 μm. Illustratively, the first overhang length L1 and the second overhang length L2 include 0.1 μm, 0.105 μm, 0.124 μm, 0.155 μm, 0.186 μm, 0.214 μm, 0.246 μm, 0.273 μm, 0.289 μm, 0.295 μm, or 0.3 μm. Preferably, the first overhang length L1 may be greater than or equal to the second overhang length L2. Doing so ensures that the overlap connection lengths of the first light emitting element 13a and the second light emitting element 13b with the first isolation portion 121 are comparable, and that the overlap connection resistances of both with the first isolation portion 121 are comparable.

[0056] 12, in the third isolation opening 1201c, the first isolation portion 121 has a third overhang length L3 relative to the second isolation portion 123. The relationship between the first overhang length L1, the second overhang length L2, and the third overhang length L3 may be as follows: the first overhang length L1 is greater than or equal to the second overhang length L2, and the second overhang length L2 is equal to the third overhang length L3; or the first overhang length L1 is equal to the third overhang length L3, and the first overhang length L1 is greater than or equal to the second overhang length L2; or the first overhang length L1, the second overhang length L2, and the third overhang length L3 are equal. By doing as described above, it is ensured that the overlap connection lengths of the first light-emitting element 13a, the second light-emitting element 13b, and the third light-emitting element 13c with the first isolation portion 121 are equivalent, and it is also ensured that the overlap connection resistances of the three with the first isolation portion 121 are equivalent.

[0057] 13, in the first isolation opening 1201a, the third isolation portion 123 has a fourth overhang length L4 relative to the bottom of the second isolation portion 122 on the side closer to the substrate 11, and in the second isolation opening 1201b, the third isolation portion 123 has a fifth overhang length L5 relative to the bottom of the second isolation portion 122 on the side closer to the substrate 11. Because the second isolation portion 122 in the second isolation opening 1201b is cleaned once, the fourth overhang length L4 and the fifth overhang length L5 are not equal, and in the present embodiment, the fourth overhang length L4 is shorter than the fifth overhang length L5. The fourth overhang length L4 is 0.1 μm to 0.6 μm, and the fifth overhang length L5 is 0.2 μm to 0.9 μm. For example, the fourth overhang length L4 includes 0.1 μm, 0.15 μm, 0.19 μm, 0.235 μm, 0.28 μm, 0.36 μm, 0.42 μm, 0.49 μm, 0.52 μm, 0.55 μm, or 0.6 μm, and the fifth overhang length L5 includes 0.2 μm, 0.22 μm, 0.26 μm, 0.35 μm, 0.42 μm, 0.51 μm, 0.64 μm, 0.75 μm, 0.82 μm, 0.88 μm, or 0.9 μm.

[0058] Similarly, in the first isolation opening 1201a, the third isolation portion 123 has a seventh overhang length L7 relative to the apex of the second isolation portion 122 on the side away from the substrate 11, and in the second isolation opening 1201b, the third isolation portion 123 has an eighth overhang length L8 relative to the apex of the second isolation portion 122 on the side away from the substrate 11. Because the second isolation portion 122 in the second isolation opening 1201b is subjected to a single cleaning process, the seventh overhang length L7 and the eighth overhang length L8 are not equal, and in this embodiment, the seventh overhang length L7 is shorter than the eighth overhang length L8.

[0059] 14, in the third isolation opening 1201c, the third isolation portion 123 has a sixth overhang length L6 relative to the bottom of the second isolation portion 122 on the side closer to the substrate 11, and a ninth overhang length L9 relative to the top of the second isolation portion 122 on the side farther from the substrate 11. The sixth overhang length L6 is between 0.3 μm and 1.2 μm, and examples of the sixth overhang length L6 include 0.3 μm, 0.42 μm, 0.56 μm, 0.65 μm, 0.72 μm, 0.81 μm, 0.94 μm, 1.05 μm, 1.12 μm, and 1.2 μm.

[0060] In such an embodiment, the fourth overhang length L4, the fifth overhang length L5, and the sixth overhang length L6 increase in this order, and the seventh overhang length L7, the eighth overhang length L8, and the ninth overhang length L9 also increase in this order.

[0061] 15 , in the direction away from the substrate 11, the light-emitting element 13 includes a light-emitting material layer 132 and a device functional layer 130, and the device functional layer 130 includes at least one of a second electrode 133 and a light extraction layer 134. Exemplarily, the device functional layer 130 includes the second electrode 133, or the second electrode 133 and the light extraction layer 134, or the device functional layer 130 includes the light extraction layer 134. When the device functional layer 130 includes the light extraction layer 134, the light-emitting element 13 further includes a second electrode 133 located between the light-emitting material layer 132 and the device functional layer 130.

[0062] The device functional layer 130 is overlap-connected to the side of the second isolation portion 122 facing the isolation opening 1201. In a direction perpendicular to the plane on which the substrate 11 is located (the Z direction in the figure), the distance between the highest point at which the device functional layer 130 is overlap-connected to the second isolation portion 122 and the plane on which the substrate 11 is located is the overlap-connection height of the device functional layer 130 with the second isolation portion 122. When the element functional layer 130 has only the second electrode 133 or only the light extraction layer 134, the overlap connection height of the element functional layer 130 with the second isolation portion 122 is the distance between the highest point of the second electrode 133 or the light extraction layer 134 that is overlapped and connected to the second isolation portion 122 and the plane on which the substrate 11 is located, and when the element functional layer 130 has both the second electrode 133 and the light extraction layer 134, the overlap connection height of the element functional layer 130 with the second isolation portion 122 is the distance between the highest point of the second electrode 133 and the light extraction layer 134 that is overlapped and connected to the second isolation portion 122 and the plane on which the substrate 11 is located.

[0063] 15 again, the height of the overlap connection between the device functional layer 130 of the first light-emitting element 13a and the second isolation portion 122 is a first overlap connection height h1, and the height of the overlap connection between the device functional layer 130 of the second light-emitting element 13b and the second isolation portion 122 is a second overlap connection height h2. The first overlap connection height h1 and the second overlap connection height h2 are different because the second isolation portion 122 around the second isolation opening 1201b is cleaned once and part of the second isolation portion 122 is side-etched from the lateral direction (X direction in the figure). In this embodiment, the first overlap connection height h1 is greater than the second overlap connection height h2.

[0064] In a possible embodiment, at least two of the first overlap connection height h1, the second overlap connection height h2, and the third overlap connection height h3 are different. Referring back to FIG. 15 , the device functional layer 130 of the third light-emitting element 13c has a third overlap connection height h3 relative to the second isolation portion 122. Because the second isolation portion 122 around the second isolation opening 1201b is cleaned once, but the second isolation portion 122 around the third isolation opening 1201c is cleaned twice, the amount of lateral side etching of the second isolation portion 122 around the third isolation structure 1201c is greater than the amount of lateral side etching of the second isolation portion 122 around the second isolation structure 1201b. This results in different first overlap connection height h1, second overlap connection height h2, and third overlap connection height h3. In this embodiment, the first overlap connection height h1, second overlap connection height h2, and third overlap connection height h3 decrease in this order.

[0065] Furthermore, the device functional layer 130 of the first light-emitting element 13a has a first overlapping connection area relative to the second isolation portion 122, and the device functional layer 130 of the second light-emitting element 13b has a second overlapping connection area relative to the second isolation portion 122, where the overlapping connection area is positively correlated with the overlapping connection height, and the first overlapping connection height h1 and the second overlapping connection height h2 are different, so the first overlapping connection area and the second overlapping connection area are also different. At least two of the first overlapping connection area, the second overlapping connection area, and the third overlapping connection area are different. Preferably, the first overlapping connection area is larger than the second overlapping connection area. In this embodiment, the device functional layer 130 of the third light-emitting element 13c has a third overlapping connection area with respect to the second isolation portion 122, and since the first overlapping connection height h1, the second overlapping connection height h2, and the third overlapping connection height h3 are different, the first overlapping connection area, the second overlapping connection area, and the third overlapping connection area are also different, and preferably, the first overlapping connection area, the second overlapping connection area, and the third overlapping connection area decrease in this order. In this embodiment, the first isolation opening 1201a, the second isolation opening 1201b, and the third isolation opening 1201c are formed simultaneously.

[0066] In another possible embodiment, the first isolation opening 1201a and the second isolation opening 1201b are formed simultaneously, and the third isolation opening 1201c is formed after the first light-emitting element 13a is fabricated in the first isolation opening 1201a and the second light-emitting element 13b is fabricated in the second isolation opening 1201b. In this embodiment, the second isolation portion 122 around the first isolation opening 1201a and the second isolation portion 122 around the third isolation opening 1201c are cleaned less than the second isolation portion 122 around the second isolation opening 1201b. For example, the second isolation portion 122 around the first isolation opening 1201a and the second isolation portion 122 around the third isolation opening 1201c are not cleaned, and the second isolation portion 122 around the second isolation opening 1201b is cleaned once. In this case, the first overlap connection height h1 is equal to the third overlap connection height h3 and is greater than the second overlap connection height h2. The first overlap connection area is equal to the third overlap connection area and is larger than the second overlap connection area.

[0067] In this application, the two can be considered "the same" if the difference is within the range of process tolerance.

[0068] 16 , the light-emitting element 13 includes a first electrode 131 connected to a pixel circuit on the substrate 11. The display panel 1 further includes a pixel definition layer 14 located on one side of the substrate 11. The isolation structure 12 is located on the side of the pixel definition layer 14 away from the substrate 11, and the pixel definition layer 14 includes a pixel opening 1401. The pixel opening 1401 exposes the first electrode 131 of the light-emitting element 13, and its orthogonal projection on the substrate 11 is located within the orthogonal projection of the isolation opening 1201 on the substrate 11. The pixel definition layer 14 may be made of an organic material or an inorganic material. If the pixel definition layer 14 is made of an inorganic material, it may have a single-layer structure of silicon oxide or silicon nitride, or a multi-layer structure of silicon oxide and silicon nitride. In this embodiment, the first electrode 131 may be the anode of the light-emitting element 13, and the second electrode 133 may be the cathode of the light-emitting element 13.

[0069] The orthogonal projection of the first electrode 131 of the light-emitting element 13 on the substrate 11 partially overlaps with the orthogonal projection of the first isolation portion 121 on the substrate 11. In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line of two adjacent isolation openings 1201, the orthogonal projection of the first electrode 131 of the first light-emitting element 13a on the substrate 11 and the orthogonal projection of the first isolation portion 121 on the substrate 11 have a first overlap length S1, and the orthogonal projection of the first electrode 131 of the second light-emitting element 13b on the substrate 11 and the orthogonal projection of the first isolation portion 121 on the substrate 11 have a second overlap length S2. During the process of manufacturing the light-emitting element 13, the isolation structure 12 around the second isolation opening 1201b is once affected by the etching of the light-emitting element pattern (i.e., etching and removing the film layer of the first light-emitting element 13a manufactured in the second isolation opening 1201b), and the first isolation portion 121 around the second isolation opening 1201b is partially etched and shortened. As a result, the first overlap length S1 and the second overlap length S2 are different, and in this embodiment, the first overlap length S1 is greater than the second overlap length S2.

[0070] 16, in a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line between two adjacent isolation openings 1201, the orthogonal projection of the first electrode 131 of the third light-emitting element 13c on the substrate 11 and the orthogonal projection of the first isolation portion 121 on the substrate 11 have a third overlap length S3. At least two of the first overlap length S1, the second overlap length S2, and the third overlap length S3 are different.

[0071] In a possible embodiment, during the process of fabricating the light emitting device 13, the isolation structure 12 on the periphery of the second isolation opening 1201b is subjected to the etching of the light emitting device pattern (i.e., etching and removing the film layer of the first light emitting device 13a fabricated in the second isolation opening 1201b), and the isolation structure 12 on the periphery of the third isolation opening 1201c is subjected to the etching of the light emitting device pattern (i.e., etching and removing the film layer of the first light emitting device 13a fabricated in the third isolation opening 1201c, and then the third isolation opening 1201c). The effect of etching (removing the film layer of the second light-emitting element 13b fabricated in the opening 1201c) is experienced twice, and the first isolation portion 121 on the periphery of the second isolation opening 1201b and the first isolation portion 121 on the periphery of the third isolation opening 1201c are etched to different degrees. As a result, the first overlap length S1, the second overlap length S2, and the third overlap length S3 are different, and in this embodiment, the first overlap length S1, the second overlap length S2, and the third overlap length S3 become smaller in this order.

[0072] In another possible embodiment, the first and second isolation openings 1201a and 1201b are formed simultaneously, and the third isolation opening 1201c is formed after the first light-emitting element 13a is fabricated in the first isolation opening 1201a and the second light-emitting element 13b is fabricated in the second isolation opening 1201b. In this case, the first overlap length S1 is equal to the third overlap length S3 and is greater than the second overlap length S2.

[0073] 17 , in this embodiment, the orthogonal projection of the light emitting material layer 132 of the light emitting element 13 on the substrate 11 partially overlaps with the orthogonal projection of the first isolation portion 121 on the substrate 11. Preferably, the first isolation portion 121 has a protruding portion 1211 that protrudes beyond the second isolation portion 122, so that the orthogonal projection of the light emitting material layer 132 of the light emitting element 13 on the substrate 11 partially overlaps with the orthogonal projection of the protruding portion 1211 on the substrate 11. The light emitting material layer 132 of the light emitting element 13 is connected to and overlaps with a part of the protruding portion 1211, and the second electrode 133 of the light emitting element 13 is connected to and overlaps with another part of the protruding portion 1211, and the second electrode 133 may further pass through the protruding portion 1211 and then be connected to and overlaps with the side of the second isolation portion 122 facing the isolation opening 1201.

[0074] In the first isolating opening 1201a, the first isolating portion 121 has a first protruding portion 12111 that protrudes beyond the second isolating portion 122. In the second isolating opening 1201b, the first isolating portion 121 has a second protruding portion 12112 that protrudes beyond the second isolating portion 122. In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center line connecting two adjacent isolating openings 1201, the light emitting material layer 132 of the first light emitting element 13a and the first protruding portion 12111 have a first overlapping connection length W1, and the light emitting material layer 132 of the second light emitting element 13b and the second protruding portion 12112 have a second overlapping connection length W2. As can be seen from the above, when the light emitting material layer 132 is manufactured at the same deposition angle, the first distance d1 and the second distance d2 are different, and the first overlapping connection length W1 and the second overlapping connection length W2 are different. When the first distance d1 is smaller than the second distance d2, the first lap connection length W1 is larger than the second lap connection length W2.

[0075] 17, in the third isolation opening 1201c, the first isolation portion 121 has a third protruding portion 12113 that protrudes relative to the second isolation portion 122. In a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolation openings 1201, the light emitting material layer 132 of the third light emitting element 13c and the third protruding portion 12113 have a third overlapping connection length W3. As can be seen from the above, the first distance d1, the second distance d2, and the third distance d3 are different. When the light emitting material layer 132 is fabricated at the same deposition angle, the first overlapping connection length W1, the second overlapping connection length W2, and the third overlapping connection length W3 are different. When the first distance d1, the second distance d2, and the third distance d3 increase in this order, the first overlapping connection length W1, the second overlapping connection length W2, and the third overlapping connection length W3 decrease in this order.

[0076] 18, 19a, 19b, and 19c, in which Fig. 19a is a cross-sectional view taken along line A1A1 in Fig. 18, Fig. 19b is a cross-sectional view taken along line B1B1 in Fig. 18, and Fig. 19c is a cross-sectional view taken along line C1C1 in Fig. 18. The isolation structure 12 includes a first isolation structure 12a located between adjacent first isolation openings 1201a and a second isolation structure 12b located between adjacent second isolation openings 1201b. In a cross-section perpendicular to the plane of the substrate 11 and passing through the center connecting line between two adjacent isolation openings 1201, the orthogonal projection of the third isolation portion 123 of the first isolation structure 12a on the substrate 11 has a first length T1, and the orthogonal projection of the third isolation portion 123 of the second isolation structure 12b on the substrate 11 has a second length T2, wherein the first length T1 and the second length T2 are equal.

[0077] In a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolation openings 1201, the orthogonal projection of the second isolation portion 122 of the first isolation structure 12a on the substrate 11 has a fourth length T4, and the orthogonal projection of the second isolation portion 122 of the second isolation structure 12b on the substrate 11 has a fifth length T5. The second isolation portion on the periphery of the first isolation opening 1201a is not cleaned, but the second isolation portion on the periphery of the second isolation opening 1201b has undergone cleaning once. The cleaning process reduces the length of the orthogonal projection of the second isolation portion 122 on the substrate 11, so the fourth length T4 and the fifth length T5 are not equal. Preferably, the fourth length T4 is greater than the fifth length T5.

[0078] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the central connecting line of two adjacent isolation openings 1201, the orthogonal projection of the first isolation portion 121 of the first isolation structure 12a on the substrate 11 has a seventh length T7, and the orthogonal projection of the first isolation portion 121 of the second isolation structure 12b on the substrate 11 has an eighth length T8, the seventh length T7 and the eighth length T8 are not equal, and preferably the seventh length T7 is greater than the eighth length T8.

[0079] The isolation structure 12 further includes a third isolation structure 12c located between adjacent third isolation openings 1201c. The orthogonal projection of the third isolation portion 123 of the third isolation structure 12c on the substrate 11 has a third length T3, of which the first length T1, the second length T2, and the third length T3 are equal. The orthogonal projection of the second isolation portion 122 of the third isolation structure 12c on the substrate 11 has a sixth length T6. The second isolation portion 122 on the periphery of the third isolation opening 1201c has undergone a cleaning process twice, and the cleaning process reduces the length of the orthogonal projection of the second isolation portion 122 on the substrate 11. As a result, the fourth length T4, the fifth length T5, and the sixth length T6 are no longer equal. Preferably, the fourth length T4, the fifth length T5, and the sixth length T6 decrease in this order.

[0080] In a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolating openings 1201, the orthogonal projection of the first isolating portion 121 of the third isolating structure 12c onto the substrate 11 has a ninth length T9, in which the seventh length T7, the eighth length T8, and the ninth length T9 are not equal. Preferably, the seventh length T7, the eighth length T8, and the ninth length T9 decrease in this order.

[0081] 18, 20a, 20b, and 20c, in which Fig. 20a is a cross-sectional view taken along line D1D1 in Fig. 18, Fig. 20b is a cross-sectional view taken along line E1E1 in Fig. 18, and Fig. 20c is a cross-sectional view taken along line F1F1 in Fig. 18. The isolation structure 12 includes a fourth isolation structure 12d located between the adjacent first and second isolation openings 1201a and 1201b, a fifth isolation structure 12e located between the adjacent first and third isolation openings 1201a and 1201c, and a sixth isolation structure 12f located between the adjacent second and third isolation openings 1201b and 1201c.

[0082] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the central connecting line of two adjacent isolation openings 1201, the orthogonal projection of the third isolation portion 123 of the fourth isolation structure 12d on the substrate 11 has a tenth length T10, the orthogonal projection of the third isolation portion 123 of the fifth isolation structure 12e on the substrate 11 has an eleventh length T11, and the orthogonal projection of the third isolation portion 123 of the sixth isolation structure 12f on the substrate 11 has a twelfth length T12, of which the tenth length T10, the eleventh length T11, and the twelfth length T12 are equal.

[0083] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line between two adjacent isolation openings 1201, the orthogonal projection of the second isolation portion 122 of the fourth isolation structure 12d on the substrate 11 has a thirteenth length T13, the orthogonal projection of the second isolation portion 122 of the fifth isolation structure 12e on the substrate 11 has a fourteenth length T14, and the orthogonal projection of the second isolation portion 122 of the sixth isolation structure 12f on the substrate 11 has a fifteenth length T15. The thirteenth length T13, the fourteenth length T14, and the fifteenth length T15 are not equal, and preferably, the thirteenth length T13, the fourteenth length T14, and the fifteenth length T15 decrease in this order.

[0084] 20a, 20b, and 20c, in a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center line connecting two adjacent isolation openings 1201, the orthogonal projection of the first isolation portion 121 of the fourth isolation structure 12d on the substrate 11 has a sixteenth length T16, the orthogonal projection of the first isolation portion 121 of the fifth isolation structure 12e on the substrate 11 has a seventeenth length T17, and the orthogonal projection of the first isolation portion 121 of the sixth isolation structure 12f on the substrate 11 has an eighteenth length T18. The sixteenth length T16, the seventeenth length T17, and the eighteenth length T18 are not equal. Preferably, the sixteenth length T16, the seventeenth length T17, and the eighteenth length T18 decrease in this order.

[0085] 21 , in this embodiment, a groove 1216 may be further provided on the side of the first isolation portion 121 facing away from the substrate 11, and the portion of the second isolation portion 122 facing the substrate 11 may be located within the groove 1216, i.e., the second isolation portion 122 may be partially embedded within the first isolation portion 121. Furthermore, both the bottom and sidewalls of the groove 1216 contact the second isolation portion 122. This design increases the contact area between the second isolation portion 122 and the first isolation portion 121, reducing the connection resistance between them and improving the overall conductive performance of the isolation structure 12, while reducing the exposed sidewall area of ​​the second isolation portion 12, reducing the impact of oxidation of the exposed sidewall on the conductive performance.

[0086] 22 , in this embodiment, the display panel 1 further includes a first sealing layer 151 having a plurality of sealing units 1511, where different sealing units 1511 are used to seal the light-emitting elements 13 in different isolation openings 1201, and each sealing unit 1511 is used to independently seal the light-emitting elements 13 in at least one isolation opening 1201. If the light-emitting elements 13 in adjacent isolation openings 1201 are of the same color, the two adjacent sealing units 1511 are connected to each other on the side of the isolation structure 12 facing away from the substrate 11. If the light-emitting elements 13 in adjacent isolation openings 1201 are of different colors, the two adjacent sealing units 1511 are separated from each other on the side of the isolation structure 12 facing away from the substrate 11, and there is a gap between the sealing unit 1511 located on the side of the isolation structure 12 facing away from the substrate 11 and the isolation structure 14. Preferably, in the direction perpendicular to the plane on which the substrate 11 is located, the thickness of the sealing unit 1511 is more than twice the thickness of the first isolation portion 121, and the distribution of the film layer of the sealing unit 1511 is not uniform, that is, the thickness at any position of the sealing unit 1511 is more than twice the thickness of the first isolation portion 121, and among them, at the position where the film layer of the sealing unit 1511 is thinnest, its thickness is more than twice the thickness of the first isolation portion 121. This allows the sealing unit 1511 to effectively seal the light-emitting element 13, and ensures the effectiveness and reliability of the sealing.

[0087] 23 , the display panel 1 further includes a second encapsulating layer 152 and a third encapsulating layer 153. The second encapsulating layer 152 covers the isolation structure 12 and the light-emitting element 13, and the second encapsulating layer 152 has a flat surface on the side facing away from the substrate 11. The third encapsulating layer 153 is located on the side facing away from the substrate 11. The first encapsulating layer 151 and the third encapsulating layer 153 are inorganic encapsulating layers, and the second encapsulating layer 152 is an organic encapsulating layer. For example, the first encapsulating layer 151 and the third encapsulating layer 153 can be formed by chemical vapor deposition (CVD), and the second encapsulating layer 152 can be formed by inkjet printing (IJP). The first encapsulating layer 151, the second encapsulating layer 152, and the third encapsulating layer 153 form a thin-film encapsulating structure of the display panel 1.

[0088] It is understood that the display panel 1 may further include film layers such as a touch function layer, an optical adhesive layer, a polarizer, a cover plate, etc., which are sequentially stacked on the side of the third sealing layer 153 away from the substrate 11, and since the above film layers are normal film layers of a display panel, they will not be described again here.

[0089] Based on the same inventive idea, this embodiment further provides a display panel. Referring to Fig. 24, the display panel 1 includes a substrate 11, a pixel definition layer 14, an isolation structure 12, and a light-emitting element 13. The substrate 11 has a multi-layer structure, including at least a plurality of conductive layers and insulating layers positioned between adjacent conductive layers, in which pixel circuits are formed to provide driving signals for the light-emitting elements, and the conductive layers may be metal conductive layers.

[0090] The pixel definition layer 14 is located on one side of the substrate 11 and has a pixel opening 1401. The isolation structure 12 is located on the side of the pixel definition layer 14 away from the substrate 11 and is surrounded and closed by the substrate 11 to form a plurality of isolation openings 1201. In the direction away from the substrate 11, the isolation structure 12 has a first isolation portion 121, a second isolation portion 122, and a third isolation portion 123 which are sequentially stacked. The orthogonal projection of the second isolation portion 122 on the substrate 11 is located within the orthogonal projection of the first isolation portion 121 on the substrate 11, and is located within the orthogonal projection of the third isolation portion 123 on the substrate 11. The orthogonal projection of the pixel opening 1401 on the substrate 11 is located within the orthogonal projection of the isolation opening 1201 on the substrate 11. In a cross section perpendicular to the plane in which the substrate 11 is located and along the center connecting line of adjacent isolation openings 1201, the cross section of the isolation structure 12 is U-shaped.

[0091] The light-emitting element 13 is at least partially located within the isolation opening 1201 and includes a first light-emitting element 13a and a second light-emitting element 13b of different light colors, and the isolation opening 1201 includes a first isolation opening 1201a and a second isolation opening 1201b, of which at least a portion of the first light-emitting element 13a is accommodated within the first isolation opening 1201a and at least a portion of the second light-emitting element 13b is accommodated within the second isolation opening 1201b.

[0092] In the first isolation opening 1201a, a first pitch M1 exists between one end of the first isolation portion 121 close to the pixel opening 1401 and the corresponding sidewall of the pixel opening 1401, and in the second isolation opening 1201b, a second pitch M2 exists between one end of the first isolation portion 121 close to the pixel opening 1401 and the corresponding sidewall of the pixel opening 1401. The isolation structure 12 around the second isolation opening 1201b has been etched once to remove the film layers of the light-emitting element in the isolation opening, and the first isolation portion 121 in the second isolation opening 1201b is partially etched, but the isolation structure 12 around the first isolation opening 1201b has not been etched to remove the film layers of the light-emitting element in the isolation opening. Therefore, the first pitch M1 and the second pitch M2 are different. Preferably, the first pitch M1 is smaller than the second pitch M2.

[0093] 25, the light emitting element 13 further includes a third light emitting element 13c having an emission color different from the emission colors of the first light emitting element 13a and the second light emitting element 13b. The isolated opening 1201 further includes a third isolated opening 1201c, and at least a portion of the third light emitting element 13 is located within the third isolated opening 1201c. In the third isolated opening 1201c, a third pitch M3 exists between one end of the first isolation portion 121 close to the pixel opening 1401 and the corresponding sidewall of the pixel opening 1401. The isolation structure 12b around the first isolation opening 1201a is not etched during the patterning process of the light-emitting device, the isolation structure 12 around the second isolation opening 1201b is etched once to remove the film layer of the light-emitting device in the isolation opening 1201, and the isolation structure 12 around the third isolation opening 1201c is etched twice to remove the film layer of the light-emitting device in the isolation opening, so that at least two of the first pitch M1, second pitch M2, and third pitch M3 are not equal. In this embodiment, the first pitch M1, second pitch M2, and third pitch M3 increase in this order.

[0094] 7 and 8, in a possible embodiment, the contour lines of the third isolation portion 123 when orthogonally projected on the substrate 11 include a first contour line 1231 corresponding to the first isolated opening 1201a and a second contour line 1232 corresponding to the second isolated opening 1201b. The contour lines of the first isolation portion 121 when orthogonally projected on the substrate 11 include a third contour line 1212 corresponding to the first isolated opening 1201a and a fourth contour line 1213 corresponding to the second isolated opening 1201b.

[0095] There is a first distance d1 between the corresponding first contour line 1231 and the corresponding third contour line 1212, and there is a second distance d2 between the corresponding second contour line 1232 and the corresponding fourth contour line 1213, and the first distance d1 and the second distance d2 are not equal, and preferably the first distance d1 is smaller than the second distance d2.

[0096] 9 and 10 , the contour line of the third isolation portion 123 when orthogonally projected on the substrate 11 includes a fifth contour line 1233 corresponding to the third isolation opening 1201c, the contour line of the first isolation portion 121 when orthogonally projected on the substrate 11 corresponds to a sixth contour line 1214 of the third isolation opening, and there is a third distance d3 between the corresponding fifth contour line 1233 and sixth contour line 1214. At least two distances among the first distance d1, the second distance d2, and the third distance d3 are not equal, and preferably, the first distance d1, the second distance d2, and the third distance d3 increase in this order.

[0097] 19a, 19b, and 19c, in a possible embodiment, the isolation structure 12 includes a first isolation structure 12a located between adjacent first isolation openings 1201a and a second isolation structure 12b located between adjacent second isolation openings 1201b. In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line between two adjacent isolation openings 1201, the orthogonal projection of the third isolation portion 123 of the first isolation structure 12a on the substrate 11 has a first length T1, and the orthogonal projection of the third isolation portion 123 of the second isolation structure 12b on the substrate 11 has a second length T2, wherein the first length T1 and the second length T2 are equal.

[0098] In a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolation openings 1201, the orthogonal projection of the second isolation portion 122 of the first isolation structure 12a on the substrate 11 has a fourth length T4, and the orthogonal projection of the second isolation portion 122 of the second isolation structure 12b on the substrate 11 has a fifth length T5. The second isolation portion on the periphery of the first isolation opening 1201a is not cleaned, but the second isolation portion on the periphery of the second isolation opening 1201b has undergone cleaning once. The cleaning process reduces the length of the orthogonal projection of the second isolation portion 122 on the substrate 11, so the fourth length T4 and the fifth length T5 are not equal. Preferably, the fourth length T4 is greater than the fifth length T5.

[0099] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the central connecting line of two adjacent isolation openings 1201, the orthogonal projection of the first isolation portion 121 of the first isolation structure 12a on the substrate 11 has a seventh length T7, and the orthogonal projection of the first isolation portion 121 of the second isolation structure 12b on the substrate 11 has an eighth length T8, the seventh length T7 and the eighth length T8 are not equal, and preferably the seventh length T7 is greater than the eighth length T8.

[0100] The isolation structure 12 further includes a third isolation structure 12c located between adjacent third isolation openings 1201c. The orthogonal projection of the third isolation portion 123 of the third isolation structure 12c on the substrate 11 has a third length T3, of which the first length T1, the second length T2, and the third length T3 are equal. The orthogonal projection of the second isolation portion 122 of the third isolation structure 12c on the substrate 11 has a sixth length T6. The second isolation portion 122 on the periphery of the third isolation opening 1201c has undergone a cleaning process twice, and the cleaning process reduces the length of the orthogonal projection of the second isolation portion 122 on the substrate 11. As a result, at least two of the fourth length T4, the fifth length T5, and the sixth length T6 are unequal. Preferably, the fourth length T4, the fifth length T5, and the sixth length T6 decrease in this order.

[0101] In a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolation openings 1201, the orthogonal projection of the first isolation portion 121 of the third isolation structure 12c onto the substrate 11 has a ninth length T9, of which at least two of the seventh length T7, the eighth length T8, and the ninth length T9 are unequal. Preferably, the seventh length T7, the eighth length T8, and the ninth length T9 decrease in this order.

[0102] Further, referring to Figures 20a, 20b and 20c, the isolation structure 12 includes a fourth isolation structure 12d located between adjacent first isolation opening 1201a and second isolation opening 1201b, a fifth isolation structure 12e located between adjacent first isolation opening 1201a and third isolation opening 1201c, and a sixth isolation structure 12f located between adjacent second isolation opening 1201b and third isolation opening 1201c.

[0103] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the central connecting line of two adjacent isolation openings 1201, the orthogonal projection of the third isolation portion 123 of the fourth isolation structure 12d on the substrate 11 has a tenth length T10, the orthogonal projection of the third isolation portion 123 of the fifth isolation structure 12e on the substrate 11 has an eleventh length T11, and the orthogonal projection of the third isolation portion 123 of the sixth isolation structure 12f on the substrate 11 has a twelfth length T12, of which the tenth length T10, the eleventh length T11, and the twelfth length T12 are equal.

[0104] In a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line of two adjacent isolation openings 1201, the orthogonal projection of the second isolation portion 122 of the fourth isolation structure 12d on the substrate 11 has a thirteenth length T13, the orthogonal projection of the second isolation portion 122 of the fifth isolation structure 12e on the substrate 11 has a fourteenth length T14, and the orthogonal projection of the second isolation portion 122 of the sixth isolation structure 12f on the substrate 11 has a fifteenth length T15. At least two of the thirteenth length T13, the fourteenth length T14, and the fifteenth length T15 are not equal, and preferably, the thirteenth length T13, the fourteenth length T14, and the fifteenth length T15 decrease in this order.

[0105] 20a, 20b, and 20c, in a cross section perpendicular to the plane of the substrate 11 and passing through the center line connecting two adjacent isolation openings 1201, the orthogonal projection of the first isolation portion 121 of the fourth isolation structure 12d on the substrate 11 has a sixteenth length T16, the orthogonal projection of the first isolation portion 121 of the fifth isolation structure 12e on the substrate 11 has a seventeenth length T17, and the orthogonal projection of the first isolation portion 121 of the sixth isolation structure 12f on the substrate 11 has an eighteenth length T18. At least two of the sixteenth length T16, the seventeenth length T17, and the eighteenth length T18 are not equal. Preferably, the sixteenth length T16, the seventeenth length T17, and the eighteenth length T18 decrease in this order.

[0106] Based on the same inventive idea, this embodiment further provides a display panel, and reference is made to Figures 26, 27a, and 27b in conjunction with Figure 8, in which Figure 27a is a schematic cross-sectional view taken along lines H1H1 and H2H2 in Figure 26, and Figure 27b is a schematic cross-sectional view taken along lines K1K1 and K2K2 in Figure 26, in which the display panel 1 includes a substrate 11, an isolation structure 12, and a light-emitting element 13. The substrate 11 has a multi-layer structure, including at least a plurality of conductive layers and insulating layers positioned between adjacent conductive layers, within which pixel circuits are formed to provide driving signals for the light-emitting elements, and the conductive layers may be metal conductive layers.

[0107] The isolation structure 12 is located on one side of the substrate 11 and is surrounded and closed by the substrate 11 to form a plurality of isolation openings 1201. In a direction away from the substrate 11, the isolation structure 12 includes a first isolation portion 121, a second isolation portion 122, and a third isolation portion 123 which are sequentially stacked, and the orthogonal projection of the second isolation portion 122 on the substrate 11 is located within the orthogonal projection of the first isolation portion 121 on the substrate 11, and the orthogonal projection of the third isolation portion 123 on the substrate 11. In a cross section perpendicular to the plane on which the substrate 11 is located and along the center connecting line of adjacent isolation openings, the cross section of the isolation structure 12 is U-shaped.

[0108] The light-emitting element 13 is at least partially located within the isolation opening 1201 and includes a first light-emitting element 13a and a second light-emitting element 13b of different light colors, and the isolation opening 1201 includes a first isolation opening 1201a and a second isolation opening 1201b, of which at least a portion of the first light-emitting element 13a is accommodated within the first isolation opening 1201a and at least a portion of the second light-emitting element 13b is accommodated within the second isolation opening 1201b.

[0109] The isolation structure 12 includes a seventh isolation structure 12h and an eighth isolation structure 12k, and the emission color of at least one light-emitting element 13 located within the isolation openings 1201 on opposing sides of the seventh isolation structure 12h is different from the emission color of at least one light-emitting element 13 located within the isolation openings 1201 on opposing sides of the eighth isolation structure 12k.

[0110] 26a and 26b, in a cross section perpendicular to the plane on which the substrate 11 is located and passing through the center connecting line between two adjacent isolation openings 1201, the orthogonal projection of the third isolation portion 123 of the seventh isolation structure 12h on the substrate 11 has a 19th length T19, the orthogonal projection of the third isolation portion 123 of the eighth isolation structure 12k on the substrate 11 has a 20th length T20, the orthogonal projection of the second isolation portion 122 of the seventh isolation structure 12h on the substrate 11 has a 21st length T21, and the orthogonal projection of the second isolation portion 122 of the eighth isolation structure 12k on the substrate 11 has a 22nd length T22, where the 19th length T19 and the 20th length T20 are the same, but the 21st length T21 and the 22nd length T22 are different. Preferably, the 21st length T21 is greater than the 22nd length T22.

[0111] In this embodiment, the seventh isolation structure 12h is located between adjacent first isolation openings 1201a, and the eighth isolation structure 12k is located between adjacent second isolation openings 1201b; alternatively, the seventh isolation structure 12h is located between adjacent first isolation openings 1201a and second isolation openings 1201b, and the eighth isolation structure 12k is located between adjacent identical isolation openings 1201. When the seventh isolation structure 12h is located between adjacent first isolation openings 1201a and second isolation openings 1201b, and the eighth isolation structure 12k is located between adjacent identical isolation openings 1201, the light emitting elements 13 located in the isolation openings 1201 on opposite sides of the seventh isolation structure 12h will emit different light, and the light emitting elements 13 located in the isolation openings 1201 on opposite sides of the eighth isolation structure 12k will emit the same light.

[0112] 26, 27a, and 27b in conjunction with FIG. 10, in this embodiment, the light emitting element 13 further includes a third light emitting element 13c having an emission color different from the emission color of the first light emitting element 13a and the emission color of the second light emitting element 13b. The isolation opening 1201 further includes a third isolation opening 1201c, and the third light emitting element 13c is fabricated in the third isolation opening 1201c. A seventh isolation structure 12h may be located between adjacent first and second isolation openings 1201a and 1201b, and an eighth isolation structure 12k may be located between adjacent second and third isolation openings 1201b and 1201c.

[0113] Based on the same inventive idea, the present application further provides an electronic device comprising a display panel according to the present application or a display panel manufactured by the display panel manufacturing method according to the present embodiment, and the electronic device may comprise a device with a display function, such as a mobile phone, a tablet, a smart wearable device, a television, a laptop, a display, etc.

[0114] The above-described examples merely represent some embodiments of the present invention, and although the description is specific and detailed, it should not be understood as limiting the scope of the present invention. It should be noted that a person skilled in the art can make further modifications and improvements without departing from the concept of the present invention, and all of these fall within the scope of protection of the present invention. Therefore, the patent protection scope of the present invention should be governed by the appended claims.

Claims

1. Providing a substrate; fabricating an isolation structure on one side of the substrate, the isolation structure having a plurality of isolation openings, the isolation structure including a first isolation portion, a second isolation portion, and a third isolation portion sequentially stacked in a direction away from the substrate, the orthogonal projection of the second isolation portion on the substrate being located within the orthogonal projection of the third isolation portion on the substrate; performing a cleaning process on the second isolation portion of the isolation structure so that the first isolation portion has a protruding portion that protrudes relatively toward the isolation opening with respect to the second isolation portion; and fabricating a light emitting element in the isolation opening such that at least a portion of a film layer is overlapped and connected to the protruding portion.

10. A display panel manufacturing method comprising:

2. the light-emitting element includes a first light-emitting element and a second light-emitting element having different light-emitting colors, the isolation opening includes a first isolation opening and a second isolation opening, and in the first isolation opening, the first isolation portion has a first protruding portion that protrudes relatively with respect to the second isolation portion, before performing a cleaning process on the second isolation portion of the isolation structure, so that the first isolation portion has a protruding portion that protrudes relatively toward the isolation opening with respect to the second isolation portion; fabricating a film layer of the first light emitting element in the first isolation opening and the second isolation opening, and at least a part of the film layer of the first light emitting element being overlapped and connected to the first protruding portion in the first isolation opening; Etching and removing the film layer of the first light-emitting element in the second isolation opening; The cleaning process for the second isolation portion of the isolation structure so that the first isolation portion has a protruding portion that protrudes relatively toward the isolation opening with respect to the second isolation portion is performed by: performing a cleaning process on the second isolation portion on the periphery of the second isolation opening using an etching solution so that the first isolation portion has a second protruding portion that protrudes relatively from the second isolation portion in the second isolation opening; The manufacturing of the light emitting element in the isolation opening so that at least a part of the film layer is overlapped and connected to the protruding portion may include: fabricating a film layer of the second light emitting element in the second isolation opening, and at least a part of the film layer of the second light emitting element being overlapped and connected to the second protruding portion in the second isolation opening; 2. The method for manufacturing a display panel according to claim 1.

3. the light emitting element further includes a third light emitting element having an emission color different from the first light emitting element and the second light emitting element, and the isolation opening further includes a third isolation opening; After fabricating the film layer of the second light-emitting element in the second isolation opening, performing a cleaning process on the second isolation portion of the isolation structure so that the first isolation portion has a protruding portion that protrudes relatively toward the isolation opening with respect to the second isolation portion, Etching and removing the film layer of the second light emitting device fabricated at the position of the third isolation opening; performing a cleaning process on the second isolation portion on the periphery of the third isolation opening using an etching solution so that the first isolation portion has a third protruding portion that protrudes relatively from the second isolation portion in the third isolation opening, The manufacturing of the light emitting element in the isolation opening so that at least a part of the film layer is overlapped and connected to the protruding portion may include: fabricating at least a part of a film layer of the third light emitting element in the third isolation opening, and at least a part of the film layer of the third light emitting element being overlapped and connected to the third protruding portion in the third isolation opening; 3. The method for manufacturing a display panel according to claim 2.

4. A substrate; an isolation structure located on one side of the substrate, surrounding and closing the substrate to form a plurality of isolation openings, the isolation structure including a first isolation portion, a second isolation portion, and a third isolation portion sequentially stacked in a direction away from the substrate, wherein an orthogonal projection of the second isolation portion on the substrate is located within an orthogonal projection of the first isolation portion on the substrate, and an orthogonal projection of the third isolation portion on the substrate is located within an orthogonal projection of the third isolation portion on the substrate; a light-emitting element at least partially located within the isolation opening, the light-emitting element comprising a first light-emitting element and a second light-emitting element of different light colors, the isolation opening comprising a first isolation opening for accommodating the first light-emitting element and a second isolation opening for accommodating the second light-emitting element; a contour line of the third isolation portion when orthogonally projected on the substrate includes a first contour line corresponding to the first isolation opening and a second contour line corresponding to the second isolation opening, and a contour line of the first isolation portion when orthogonally projected on the substrate includes a third contour line corresponding to the first isolation opening and a fourth contour line corresponding to the second isolation opening, There is a first distance between the corresponding first contour line and the corresponding third contour line, and there is a second distance between the corresponding second contour line and the corresponding fourth contour line, the second distance not equal to the first distance. A display panel characterized by:

5. the light-emitting element further includes a third light-emitting element having an emission color different from those of the first and second light-emitting elements, the isolated opening further includes a third isolated opening, at least a portion of the third light-emitting element is located within the third isolated opening, a contour line of the third isolated portion when orthogonally projected on the substrate includes a fifth contour line corresponding to the third isolated opening, a contour line of the first isolated portion when orthogonally projected on the substrate corresponds to a sixth contour line of the third isolated opening, there is a third distance between the corresponding fifth contour line and sixth contour line, and the first distance, the second distance, and the third distance are not equal, the first distance, the second distance, and the third distance increase in this order; 5. The display panel according to claim 4.

6. In the first isolation opening, the first isolation portion has a first overhang length relative to the second isolation portion, and in the second isolation opening, the first isolation portion has a second overhang length relative to the second isolation portion; the first overhang length and the second overhang length are less than or equal to 0.3 μm; 5. The display panel according to claim 4.

7. the light-emitting element further includes a third light-emitting element having an emission color different from the first light-emitting element and the second light-emitting element, the isolated opening further includes a third isolated opening, at least a portion of the third light-emitting element is located within the third isolated opening, and in the third isolated opening, the first isolated portion has a third protruding length relative to the second isolated portion; the first overhang length is greater than or equal to the second overhang length, and the second overhang length is equal to the third overhang length; Or, the first overhang length is equal to the third overhang length and is greater than or equal to the second overhang length; Alternatively, the first overhang length, the second overhang length, and the third overhang length are equal.

7. The display panel according to claim 6, wherein the first and second electrodes are arranged parallel to each other.

8. In the first isolation opening, the third isolation portion has a fourth overhang length relative to a bottom portion of the second isolation portion on a side closer to the substrate, and in the second isolation opening, the third isolation portion has a fifth overhang length relative to a bottom portion of the second isolation portion on a side closer to the substrate, and the fourth overhang length and the fifth overhang length are not equal.

5. The display panel according to claim 4.

9. The fourth protrusion length is 0.1 μm to 0.6 μm, and the fifth protrusion length is 0.2 μm to 0.9 μm.

9. The display panel according to claim 8.

10. the light-emitting element further includes a third light-emitting element having an emission color different from the first light-emitting element and the second light-emitting element, the isolation opening further includes a third isolation opening, at least a portion of the third light-emitting element is located within the third isolation opening, and in the third isolation opening, the third isolation portion has a sixth protrusion length with respect to a bottom portion of the second isolation portion on a side closer to the substrate; the sixth protrusion length is 0.3 μm to 1.2 μm; the fourth overhang length, the fifth overhang length, and the sixth overhang length increase in this order.

9. The display panel according to claim 8.

11. In the first isolation opening, the third isolation portion has a seventh overhang length relative to an apex of the second isolation portion on a side away from the substrate, and in the second isolation opening, the third isolation portion has an eighth overhang length relative to an apex of the second isolation portion on a side away from the substrate, and the seventh overhang length and the eighth overhang length are not equal.

5. The display panel according to claim 4.

12. the light-emitting element further includes a third light-emitting element having an emission color different from the first light-emitting element and the second light-emitting element, the isolation opening further includes a third isolation opening, at least a portion of the third light-emitting element is located within the third isolation opening, and in the third isolation opening, the third isolation portion has a ninth protrusion length with respect to an apex of the second isolation portion on a side away from the substrate, the seventh overhang length, the eighth overhang length, and the ninth overhang length increase in this order.

12. The display panel according to claim 11.

13. the light-emitting element includes a first electrode connected to a pixel circuit on the substrate; an orthogonal projection of a first electrode of the light-emitting element on the substrate partially overlaps with an orthogonal projection of the first isolation portion on the substrate; In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a first electrode of the first light-emitting element on the substrate and an orthogonal projection of the first isolation portion on the substrate have a first overlapping length, and an orthogonal projection of a first electrode of the second light-emitting element on the substrate and an orthogonal projection of the first isolation portion on the substrate have a second overlapping length, the light emitting element further comprises a third light emitting element having an emission color different from the first light emitting element and the second light emitting element, the isolation opening further comprises a third isolation opening, at least a portion of the third light emitting element is located within the third isolation opening, in a cross section perpendicular to a plane on which the substrate is located and passing through a center connecting line of two adjacent isolation openings, an orthogonal projection of a first electrode of the third light emitting element on the substrate and an orthogonal projection of the first isolation portion on the substrate have a third overlap length, and the first overlap length, the second overlap length, and the third overlap length are different; 5. The display panel according to claim 4.

14. the isolation structure includes a first isolation structure positioned between adjacent first isolation openings and a second isolation structure positioned between adjacent second isolation openings; in a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a third isolation portion of the first isolation structure on the substrate has a first length, and an orthogonal projection of the third isolation portion of the second isolation structure on the substrate has a second length, the first length and the second length being equal; in a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the second isolation portion of the first isolation structure on the substrate has a fourth length, and an orthogonal projection of the second isolation portion of the second isolation structure on the substrate has a fifth length, the fourth length and the fifth length being unequal; In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a first isolation portion of the first isolation structure on the substrate has a seventh length, and an orthogonal projection of a first isolation portion of the second isolation structure on the substrate has an eighth length, and the seventh length and the eighth length are not equal.

5. The display panel according to claim 4.

15. the light-emitting element further comprises a third light-emitting element having an emission color different from those of the first light-emitting element and the second light-emitting element, the isolation opening further comprises a third isolation opening, at least a portion of the third light-emitting element is located within the third isolation opening, the isolation structure further comprises a third isolation structure located between adjacent third isolation openings, an orthogonal projection of the third isolation portion of the third isolation structure on the substrate has a third length, and the first length, the second length, and the third length are equal, an orthogonal projection of the second isolation portion of the third isolation structure on the substrate has a sixth length, and the fourth length, the fifth length, and the sixth length are not equal; In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the first isolation portion of the third isolation structure on the substrate has a ninth length, and the seventh length, the eighth length, and the ninth length are not equal to each other.

15. The display panel according to claim 14.

16. the light-emitting element further includes a third light-emitting element having an emission color different from those of the first light-emitting element and the second light-emitting element, the isolation opening further includes a third isolation opening, at least a portion of the third light-emitting element is located within the third isolation opening, and the isolation structure includes a fourth isolation structure located between the first isolation opening and the second isolation opening adjacent to each other, a fifth isolation structure located between the first isolation opening and the third isolation opening adjacent to each other, and a sixth isolation structure located between the second isolation opening and the third isolation opening adjacent to each other, In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the third isolation portion of the fourth isolation structure on the substrate has a tenth length, an orthogonal projection of the third isolation portion of the fifth isolation structure on the substrate has an eleventh length, and an orthogonal projection of the third isolation portion of the sixth isolation structure on the substrate has a twelfth length, and the tenth length, the eleventh length, and the twelfth length are equal.

5. The display panel according to claim 4.

17. In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the second isolation portion of the fourth isolation structure on the substrate has a thirteenth length, an orthogonal projection of the second isolation portion of the fifth isolation structure on the substrate has a fourteenth length, and an orthogonal projection of the second isolation portion of the sixth isolation structure on the substrate has a fifteenth length, and the thirteenth length, the fourteenth length, and the fifteenth length are not equal to each other; In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a first isolation portion of the fourth isolation structure on the substrate has a 16th length, an orthogonal projection of a first isolation portion of the fifth isolation structure on the substrate has a 17th length, and an orthogonal projection of a first isolation portion of the sixth isolation structure on the substrate has an 18th length, and the 16th length, the 17th length, and the 18th length are not equal.

17. The display panel according to claim 16.

18. A substrate; a pixel definition layer located on one side of the substrate and having pixel openings; an isolation structure located on a side of the pixel definition layer away from the substrate, the isolation structure being surrounded and closed by the substrate to form a plurality of isolation openings, the isolation structure comprising a first isolation portion, a second isolation portion, and a third isolation portion which are sequentially stacked in a direction away from the substrate, the orthogonal projection of the second isolation portion on the substrate being located within the orthogonal projection of the first isolation portion on the substrate, the orthogonal projection of the third isolation portion on the substrate being located within the orthogonal projection of the pixel opening on the substrate; a light-emitting element at least partially located within the isolation opening, the light-emitting element comprising a first light-emitting element and a second light-emitting element of different light-emitting colors, the isolation opening comprising a first isolation opening used to accommodate the first light-emitting element and a second isolation opening used to accommodate the second light-emitting element; In the first isolation opening, there is a first pitch between one end of the first isolation portion close to the pixel opening and a sidewall of the corresponding pixel opening, and in the second isolation opening, there is a second pitch different from the first pitch between one end of the first isolation portion close to the pixel opening and a sidewall of the corresponding pixel opening. A display panel characterized by:

19. the first pitch is smaller than the second pitch; the light-emitting element further includes a third light-emitting element having an emission color different from those of the first light-emitting element and the second light-emitting element, the isolated opening further includes a third isolated opening, at least a portion of the third light-emitting element is located within the third isolated opening, in the third isolated opening, there is a third pitch between one end of the first isolated portion close to the pixel opening and a corresponding sidewall of the pixel opening, the first pitch, the second pitch and the third pitch being different from each other; 19. The display panel according to claim 18.

20. a contour line of the third isolation portion when orthogonally projected on the substrate includes a first contour line corresponding to the first isolation opening and a second contour line corresponding to the second isolation opening, and a contour line of the first isolation portion when orthogonally projected on the substrate includes a third contour line corresponding to the first isolation opening and a fourth contour line corresponding to the second isolation opening, There is a first distance between the corresponding first contour line and the corresponding third contour line, and there is a second distance between the corresponding second contour line and the corresponding fourth contour line, the second distance not equal to the first distance.

19. The display panel according to claim 18.

21. the light-emitting element further comprises a third light-emitting element having an emission color different from the first and second light-emitting elements, the isolated opening further comprises a third isolated opening, at least a portion of the third light-emitting element is located within the third isolated opening, a contour line of the third isolated portion when orthogonally projected on the substrate includes a fifth contour line corresponding to the third isolated opening, a contour line of the first isolated portion when orthogonally projected on the substrate corresponds to a sixth contour line of the third isolated opening, there is a third distance between the corresponding fifth contour line and the sixth contour line, and at least two distances among the first distance, the second distance and the third distance are not equal; 21. The display panel according to claim 20.

22. the isolation structure includes a first isolation structure positioned between adjacent first isolation openings and a second isolation structure positioned between adjacent second isolation openings; in a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a third isolation portion of the first isolation structure on the substrate has a first length, and an orthogonal projection of the third isolation portion of the second isolation structure on the substrate has a second length, the first length and the second length being equal; in a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the second isolation portion of the first isolation structure on the substrate has a fourth length, and an orthogonal projection of the second isolation portion of the second isolation structure on the substrate has a fifth length, the fourth length and the fifth length being unequal; In a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of a first isolation portion of the first isolation structure on the substrate has a seventh length, and an orthogonal projection of a first isolation portion of the second isolation structure on the substrate has an eighth length, and the seventh length and the eighth length are not equal.

19. The display panel according to claim 18.

23. the light-emitting element further comprises a third light-emitting element having an emission color different from those of the first light-emitting element and the second light-emitting element, the isolation opening further comprises a third isolation opening, at least a portion of the third light-emitting element is located within the third isolation opening, the isolation structure further comprises a third isolation structure located between adjacent third isolation openings, an orthogonal projection of the third isolation portion of the third isolation structure on the substrate has a third length, and the first length, the second length, and the third length are equal, an orthogonal projection of the second isolation portion of the third isolation structure on the substrate has a sixth length, and the fourth length, the fifth length, and the sixth length decrease in this order; in a cross section perpendicular to a plane on which the substrate is located and passing through a central connecting line between two adjacent isolation openings, an orthogonal projection of the first isolation portion of the third isolation structure on the substrate has a ninth length, and the seventh length, the eighth length, and the ninth length decrease in this order; 23. The display panel according to claim 22.

Images