Display panel, preparation method of display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display, the display panel comprises a substrate, an isolation structure and a plurality of light-emitting units, the isolation structure is located on one side of the substrate, a plurality of isolation openings are defined by the isolation structure, and the light-emitting units are arranged in the isolation openings. The isolation structure comprises a first isolation part and a second isolation part which are sequentially arranged in a stacked mode in the direction away from the substrate, the second isolation part comprises a protruding part, the orthographic projection of the protruding part on the substrate is located outside the orthographic projection of the side, away from the substrate, of the first isolation part on the substrate, and in the direction away from the substrate, the orthographic projection of the protruding part is larger than the orthographic projection of the side, away from the substrate, of the first isolation part. At least part of the side, close to the substrate, of the protruding part comprises a first cambered surface protruding based on the plane where the substrate is located, and at least part of the light-emitting unit is located in the corresponding isolation opening. According to the invention, the second isolation part is not easy to warp towards the direction far away from the substrate, so that the risk of crosstalk between the light emitting units can be reduced.

Description

Technical Field

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

[0002] Flat display devices based on technologies such as Organic Light Emitting Diode (OLED) and Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptop computers, and desktop computers due to their advantages of high picture quality, power saving, thin body, and wide application range, and have become the mainstream in display panels. In the process of manufacturing traditional display panels, the light-emitting pixel patterning is usually achieved through a Fine Metal Mask (FMM). The FMM technology is mature and has rich mass production experience. However, the FMM technology also has problems such as limited precision, high development cost, and long development cycle. The fine metal maskless technology eliminates the limitations of traditional OLED processes on the display screen size, resolution, and other screen body performances, and has the advantages of high performance, full-domain size, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A record the relevant content of the fine metal maskless technology for reference.

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

[0004] In order to overcome the technical problems mentioned in the above technical background, an embodiment of the present application provides a display panel, and the display panel includes: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing a plurality of isolation openings, the isolation structure including a first isolation portion and a second isolation portion stacked in sequence along a direction away from the substrate, the second isolation portion including a protruding portion, a positive projection of the protruding portion on the substrate being located outside a positive projection of the first isolation portion on the substrate on a side away from the substrate, and in a direction away from the substrate, at least a part of a side of the protruding portion close to the substrate including a first arc surface protruding based on a plane where the substrate is located; a plurality of light-emitting units, at least a part of the light-emitting units being located in the corresponding isolation openings.

[0005] In some possible embodiments, the second isolation part further includes a main body part, and along a direction parallel to the substrate, the protruding part and the main body part are connected to each other; Preferably, a positive projection of the main body part on the substrate surrounds a positive projection of the protruding part on the substrate; Preferably, a positive projection of a side of the main body part close to the substrate on the substrate coincides with a positive projection of a side of the first isolation part far from the substrate on the substrate.

[0006] In some possible embodiments, in a direction away from the substrate, a side of the protruding part close to the substrate is a first arc surface protruding based on a plane where the substrate is located; Preferably, in a direction away from the substrate, a side of the protruding part far from the substrate includes a second arc surface protruding based on a plane where the substrate is located; Preferably, in a direction away from the substrate, a side of the main body part close to the substrate includes a third arc surface protruding based on a plane where the substrate is located, and the third arc surface is connected to the first arc surface; Preferably, in a direction away from the substrate, a side of the main body part far from the substrate includes a fourth arc surface protruding based on a plane where the substrate is located, and the fourth arc surface is connected to the second arc surface; Preferably, a pattern formed by positive projections of the first arc surface and the third arc surface on the substrate overlaps a pattern formed by positive projections of the second arc surface and the fourth arc surface on the substrate.

[0007] In some possible embodiments, the display panel further includes a cushion layer located between the isolation structure and the substrate. The cushion layer includes a plurality of cushion parts arranged at intervals. In a direction away from the substrate, a side of the cushion part far from the substrate includes a fifth arc surface protruding based on a plane where the substrate is located, and a positive projection of the fifth arc surface on the substrate overlaps a pattern formed by positive projections of the first arc surface and the third arc surface on the substrate; Preferably, the light-emitting unit includes a first electrode, at least a part of the cushion part is located between the first electrode and the substrate. In a direction away from the substrate, a side of the first electrode close to the substrate includes a sixth arc surface protruding based on a plane where the substrate is located, and the sixth arc surface is mutually attached to a part of the fifth arc surface; Preferably, in a direction away from the substrate, a side of the first electrode far from the substrate includes a seventh arc surface protruding based on a plane where the substrate is located, and a positive projection of the sixth arc surface on the substrate overlaps a positive projection of the seventh arc surface on the substrate; Preferably, the display panel further includes a pixel defining layer located between the first electrode and the isolation structure. The pixel defining layer defines a plurality of pixel openings, and the pixel openings communicate with the isolation openings. In a direction away from the substrate, a side of the pixel defining layer close to the substrate includes an eighth arc surface protruding based on the plane of the substrate, and the eighth arc surface is mutually attached to the seventh arc surface and a part of the fifth arc surface; Preferably, in a direction away from the substrate, a side of the pixel defining layer away from the substrate includes a ninth arc surface protruding based on the plane of the substrate, and a positive projection of the eighth arc surface on the substrate is located within a positive projection of the ninth arc surface on the substrate; Preferably, there is a gap between the ninth arc surface and the first arc surface, and a positive projection of the first arc surface on the substrate overlaps with a positive projection of the ninth arc surface on the substrate; Preferably, in a direction away from the substrate, a side of the first isolation portion close to the substrate includes a tenth arc surface protruding based on the plane of the substrate, and the tenth arc surface is mutually attached to a part of the ninth arc surface; Preferably, in a direction away from the substrate, a side of the first isolation portion away from the substrate includes an eleventh arc surface protruding based on the plane of the substrate, and the eleventh arc surface is mutually attached to the third arc surface.

[0008] In some possible implementation manners, along the thickness direction of the substrate, the display panel further includes a spacer layer and a pixel defining layer that are sequentially stacked between the substrate and the isolation structure. The pixel defining layer defines a plurality of pixel openings, and the pixel openings communicate with the isolation openings. The spacer layer includes a plurality of spacer portions arranged at intervals; in a direction away from the substrate, a side of the spacer portion away from the substrate includes a fifth arc surface protruding based on the plane of the substrate, and a side of the pixel defining layer close to the substrate includes an eighth arc surface protruding based on the plane of the substrate, and the eighth arc surface is mutually attached to the fifth arc surface; Preferably, in a direction away from the substrate, a side of the pixel defining layer away from the substrate includes a ninth arc surface protruding based on the plane of the substrate, and a positive projection of the eighth arc surface on the substrate is located within a positive projection of the ninth arc surface on the substrate; Preferably, there is a gap between the ninth arc surface and the first arc surface, and a positive projection of the first arc surface on the substrate overlaps with a positive projection of the ninth arc surface on the substrate; Preferably, in a direction away from the substrate, a side of the first isolation portion close to the substrate includes a tenth arc surface protruding based on the plane of the substrate, and the tenth arc surface is mutually attached to a part of the ninth arc surface; Preferably, on the side of the first isolation part away from the substrate in the direction away from the substrate, there is an eleventh arc surface protruding based on the plane where the substrate is located, and the eleventh arc surface fits with the third arc surface.

[0009] In some possible embodiments, along the thickness direction of the substrate, the display panel further includes a pixel defining layer and a spacer layer that are sequentially stacked between the substrate and the isolation structure. The pixel defining layer defines a plurality of pixel openings, and the pixel openings communicate with the isolation openings. The spacer layer includes a plurality of spacer parts arranged at intervals; on the side of the spacer part away from the substrate in the direction away from the substrate, there is a fifth arc surface protruding based on the plane where the substrate is located, and on the side of the first isolation part close to the substrate, there is a tenth arc surface protruding based on the plane where the substrate is located, and the tenth arc surface fits with part of the fifth arc surface; Preferably, there is a gap between the fifth arc surface and the first arc surface, and the orthographic projection of the first arc surface on the substrate overlaps with the orthographic projection of the fifth arc surface on the substrate; Preferably, on the side of the first isolation part away from the substrate in the direction away from the substrate, there is an eleventh arc surface protruding based on the plane where the substrate is located, and the eleventh arc surface fits with the third arc surface.

[0010] In some possible embodiments, the side of the spacer part close to the substrate is a flat surface; Preferably, the orthographic projection of the spacer part on the substrate is located outside the orthographic projection of the side of the pixel opening close to the substrate on the substrate; Preferably, the radian of the fifth arc surface is greater than or equal to 50° and less than or equal to 70°; Preferably, the radian of the first arc surface is greater than or equal to 50° and less than or equal to 70°.

[0011] In some possible embodiments, along the thickness direction of the substrate, the thickness of the spacer part is greater than or equal to 1 μm and less than or equal to 2 μm; Preferably, the material of the spacer part includes an organic material; Preferably, the material of the spacer part includes polyimide.

[0012] In some possible embodiments, the display panel further includes a packaging unit on the side of the light-emitting unit away from the substrate, and part of the packaging unit extends from the side of the isolation structure facing the isolation opening to the side of the isolation structure away from the substrate; Preferably, in the direction away from the substrate, on the side of the encapsulation unit away from the substrate and located on the side of the isolation structure away from the substrate, the side close to the substrate includes a fourteenth arc surface protruding based on the plane where the substrate is located, and the orthographic projection of the fourteenth arc surface on the substrate is located within the orthographic projection of the first arc surface on the substrate; Preferably, in the direction away from the substrate, on the side of the encapsulation unit away from the substrate and located on the side of the isolation structure away from the substrate, the side away from the substrate includes a fifteenth arc surface protruding based on the plane where the substrate is located, and the orthographic projection of the fifteenth arc surface on the substrate overlaps with the orthographic projection of the fourteenth arc surface on the substrate; Preferably, the number of the encapsulation units is multiple, and at least two of the light-emitting units with different light-emitting colors correspond to different encapsulation units; Preferably, the encapsulation units are arranged at intervals on the side of the isolation structure away from the substrate; Preferably, there is a gap between the encapsulation unit on the side of the isolation structure away from the substrate and the side of the isolation structure away from the substrate; Preferably, the encapsulation unit and the side of the isolation structure facing the isolation opening are in mutual contact.

[0013] In some possible implementation manners, the display panel further includes a second encapsulation layer on the side of the encapsulation unit away from the substrate and a third encapsulation layer on the side of the second encapsulation layer away from the substrate; Preferably, the materials of the encapsulation unit and the third encapsulation layer both include inorganic materials; Preferably, the material of the second encapsulation layer includes an organic material.

[0014] In some possible implementation manners, the light-emitting unit includes a first electrode, a light-emitting functional part, and a second electrode that are sequentially stacked along the thickness direction of the substrate, the isolation structure includes a conductive material, and the second electrode is electrically connected to the first isolation part; Preferably, the isolation structure further includes a third isolation part on the side of the first isolation part facing the substrate, and the second electrode is electrically connected to the third isolation part; Preferably, the orthographic projection of the light-emitting functional part on the substrate is located outside the orthographic projection of the first isolation part on the substrate; Preferably, the material of the third isolation part includes molybdenum or titanium; and / or, the material of the first isolation part includes aluminum, silver, or copper; and / or, the material of the second isolation part includes titanium or molybdenum.

[0015] In some possible embodiments, on the side of the third isolation portion closer to the substrate in a direction away from the substrate, the side of the third isolation portion closer to the substrate includes a twelfth arc surface protruding based on the plane where the substrate is located, and the twelfth arc surface is attached to a part of the ninth arc surface; Preferably, on the side of the third isolation portion away from the substrate in a direction away from the substrate, the side of the third isolation portion away from the substrate includes a thirteenth arc surface protruding based on the plane where the substrate is located, and the thirteenth arc surface is attached to a part of the tenth arc surface.

[0016] In some possible embodiments, the present application further provides a method for manufacturing a display panel, the method including: Providing a substrate; Forming an isolation structure on one side of the substrate, the isolation structure enclosing to form a plurality of isolation openings, the isolation structure including a first isolation portion and a second isolation portion stacked in sequence in a direction away from the substrate, the second isolation portion including a protruding portion, a positive projection of the protruding portion on the substrate being located outside a positive projection of the first isolation portion away from the substrate on the substrate, on the side of the protruding portion closer to the substrate in a direction away from the substrate, at least a part of the side of the protruding portion closer to the substrate includes a first arc surface protruding based on the plane where the substrate is located; Forming at least a part of a light-emitting unit in the corresponding isolation opening.

[0017] In some possible embodiments, before the step of forming the isolation structure on one side of the substrate, further included is: Forming a heightening material layer on one side of the substrate, and performing a patterning process on the heightening material layer to form a plurality of heightening portions arranged at intervals, on the side of the heightening portion away from the substrate in a direction away from the substrate, the side of the heightening portion away from the substrate includes a fifth arc surface protruding based on the plane where the substrate is located, a positive projection of the first arc surface on the substrate overlapping a positive projection of the fifth arc surface on the substrate; The step of forming the isolation structure on one side of the substrate includes: Forming an isolation material layer on a side of the heightening layer away from the substrate, a sixteenth arc surface being formed at a position of the fifth arc surface on a side of the isolation material layer closer to the substrate, the sixteenth arc surface including the first arc surface; Performing a patterning process on the isolation material layer to form the isolation structure.

[0018] In some possible embodiments, the present application further provides an electronic device, the electronic device including the display panel described in the present application, or including a display panel prepared by the method for manufacturing a display panel described in the present application.

[0019] Compared with the prior art, the present application has the following beneficial effects: A display panel, a manufacturing method thereof, and an electronic device provided by the present application can reduce the impact of an etching solution on a second isolation part by providing a first arc surface on one side of a protruding part close to a substrate, making it difficult for the second isolation part to warp away from the substrate, so that the light-emitting material layer of a light-emitting unit is not easily overlapped with an isolation structure, thereby reducing the risk of crosstalk between light-emitting units and ultimately improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 A cross-sectional schematic diagram of the display panel provided by the embodiment of the present application; Figure 2a A partial top view schematic diagram of the display panel provided by the embodiment of the present application; Figure 2b One of the cross-sectional schematic diagrams taken along line A-A in the [embodiment of the present application] Figure 2a ; Figure 3 One of the cross-sectional schematic diagrams taken along line A-A in the [embodiment of the present application] Figure 2a ; Figure 4 One of the cross-sectional schematic diagrams taken along line A-A in the [embodiment of the present application] Figure 2a ; Figure 5 One of the cross-sectional schematic diagrams taken along line A-A in the [embodiment of the present application] Figure 2a ; Figure 6 A cross-sectional schematic diagram of the display panel provided by the embodiment of the present application including a packaging unit; Figure 7 A cross-sectional schematic diagram of the display panel provided by the embodiment of the present application including a packaging unit; Figure 8 A cross-sectional schematic diagram of the display panel provided by the embodiment of the present application including a packaging unit; Figure 9 A cross-sectional schematic diagram of the display panel provided by the embodiment of the present application including a second packaging layer and a third packaging layer; Figure 10 A flowchart of a manufacturing method of a display panel provided by the embodiment of the present application; Figure 11Schematic cross-sectional view of forming a heightening material layer on one side of a substrate provided by an embodiment of the present application; Figure 12 Schematic cross-sectional view of patterning the heightening material layer provided by an embodiment of the present application; Figure 13 Schematic cross-sectional view of forming a first electrode layer on one side of a substrate provided by an embodiment of the present application; Figure 14 Schematic cross-sectional view of sequentially forming a pixel definition layer and an isolation material layer on the side of the heightening layer away from the substrate provided by an embodiment of the present application; Figure 15 Schematic cross-sectional view of sequentially patterning the isolation material layer and the pixel definition material layer provided by an embodiment of the present application.

[0022] Reference numerals: 1. Substrate; 2. Pixel definition layer; 21. Pixel opening; 22. Eighth arc surface; 23. Ninth arc surface; 3. Isolation structure; 31. First isolation part; 311. Tenth arc surface; 312. Eleventh arc surface; 32. Second isolation part; 321. Protrusion; 3211. First arc surface; 3212. Second arc surface; 322. Main body part; 3221. Third arc surface; 3222. Fourth arc surface; 33. Third isolation part; 331. Twelfth arc surface; 332. Thirteenth arc surface; 4. First electrode; 41. Sixth arc surface; 42. Seventh arc surface; 5. Light-emitting functional part; 6. Second electrode; 7. Light-emitting unit; 8. Isolation opening; 9. Heightening layer; 91. Heightening part; 911. Fifth arc surface; 10. Encapsulation unit; 101. Fourteenth arc surface; 102. Fifteenth arc surface; 11. Second encapsulation layer; 12. Third encapsulation layer; 13. Heightening material layer; 14. Pixel definition material layer; 15. Isolation material layer; 151. Sixteenth arc surface. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0025] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0027] It should be noted that, without conflict, different features in the embodiments of the present application can be combined with each other.

[0028] Increasing the density of light-emitting units in a display panel (i.e., pixel density) is an important way to improve the display effect. However, currently, the display panel made by using the Fine Metal Mask (FMM) technology is limited by technology and cannot further increase the density of light-emitting units. Through long-term research by the inventors, it is found that in order to solve the technical problem that the density of light-emitting units cannot be further increased, an isolation structure is provided in some display panels. When the light-emitting functional layer and the second electrode are deposited in a whole layer, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Different color light-emitting units can be formed in different isolation openings through multiple deposition and multiple etching processes (i.e., light-emitting unit patterning).

[0029] The display panel in the related art includes a substrate, an isolation structure on one side of the substrate, and light-emitting units in the isolation openings formed by enclosing the isolation structure. The light-emitting units include a light-emitting functional part and a second electrode stacked in sequence. The second electrode is overlapped with the isolation structure to transmit the signal of the second electrode to different light-emitting units.

[0030] However, during the process of forming the display panel in the related art, it is easy for the isolation structure to warp away from the substrate, so that the light-emitting functional part of the light-emitting unit is overlapped with the isolation structure, and then a problem of lateral leakage occurs between different light-emitting units, ultimately affecting the display effect of the display panel.

[0031] To solve the above-mentioned technical problems, the inventors have innovatively designed the following technical solutions. The specific implementation solutions of this application will be described in detail below with reference to the accompanying drawings. It should be noted that all the defects existing in the above-mentioned prior art solutions are the results obtained by the inventors through practice and careful research. Therefore, the process of discovering the above-mentioned technical problems and the solutions proposed in the following embodiments for the above problems should be the contributions made by the inventors to this application during the invention and creation process, and should not be understood as the technical content known to those skilled in the art.

[0032] Please refer to Figure 1 , this embodiment provides a display panel, which includes a substrate 1, an isolation structure 3, and a plurality of light-emitting units 7.

[0033] The substrate 1 may include a substrate and a plurality of driving units located on one side of the substrate. Each driving unit may include one or more semiconductor switching devices. The semiconductor switching devices may be formed by the cooperation of a plurality of film layers in the substrate 1. For example, the semiconductor switching devices may be thin-film transistors formed by the cooperation of a plurality of film layers.

[0034] The isolation structure 3 is located on one side of the substrate 1. The isolation structure 3 encloses a plurality of isolation openings 8. The isolation structure 3 includes a first isolation portion 31 and a second isolation portion 32 that are sequentially stacked in a direction away from the substrate 1. The second isolation portion 32 includes a protruding portion 321. The orthographic projection of the protruding portion 321 on the substrate 1 is located outside the orthographic projection of the first isolation portion 31 on the substrate 1 on the side away from the substrate 1. In the direction away from the substrate 1, at least a part of the side of the protruding portion 321 close to the substrate 1 includes a first arc surface 3211 that protrudes based on the plane where the substrate 1 is located.

[0035] At least a part of the light-emitting unit 7 is located in the corresponding isolation opening 8.

[0036] The area of the orthographic projection of the side of the first isolation portion 31 away from the substrate 1 on the substrate 1 is smaller than the area of the orthographic projection of the second isolation portion 32 on the substrate 1. The second isolation portion 32 protrudes relative to the first isolation portion 31. At least a part of the second isolation portion 32 that protrudes relative to the first isolation portion 31 is the protruding portion 321. The second isolation portion 32 plays a role in blocking the materials of the light-emitting unit 7.

[0037] In the related art, during the process of forming a display panel, an etching solution (such as the etching solution for etching the isolation structure 3, the dry etching gas for dry etching the encapsulation unit, the etching solution for etching the material of the light-emitting unit 7, etc.) will impact the second isolation portion 32. After being impacted by the etching solution, the second isolation portion 32 is prone to warp away from the substrate 1. Due to the second isolation portion 32 warping away from the substrate 1, when forming the light-emitting material layer of the light-emitting unit 7, the second isolation portion 32 has a poor effect of isolating the light-emitting material layer, and it is easy for the light-emitting material layer to be connected to the isolation structure 3, resulting in crosstalk between the light-emitting units 7 of different light-emitting colors, ultimately affecting the display effect of the display panel.

[0038] In this embodiment, at least a part of the side of the protruding portion 321 in the suspended part of the second isolation portion 32 facing the substrate 1 is set to include a first arc surface 3211 protruding based on the plane where the substrate 1 is located, as Figure 1 shown by the dotted arrow indicating the flow direction of the etching solution. Since the first arc surface 3211 protrudes away from the substrate 1 based on the plane where the substrate 1 is located, on the one hand, when the etching solution reaches the first arc surface 3211 of the protruding portion 321, the etching solution will flow out more smoothly along the first arc surface 3211, thereby greatly reducing the impact of the etching solution on the second isolation portion 32; on the other hand, the outflowing etching solution will impact the inflowing etching solution, thereby further reducing the impact force of the inflowing etching solution on the second isolation portion 32, and further making it difficult for the second isolation portion 32 to warp away from the substrate 1.

[0039] In this way, when forming the light-emitting material layer of the light-emitting unit 7, the second isolation portion 32 will effectively isolate the light-emitting material layer and make it difficult for the light-emitting material layer to be connected to the isolation structure 3, thereby making it difficult for crosstalk to occur between the light-emitting units 7, and further improving the display effect of the display panel.

[0040] Based on the above design, in this embodiment, by providing the first arc surface 3211 on the side of the protruding portion 321 close to the substrate 1, the impact of the etching solution on the second isolation portion 32 can be reduced, making it difficult for the second isolation portion 32 to warp away from the substrate 1, so that it is difficult for the light-emitting material layer of the light-emitting unit 7 to be connected to the isolation structure 3, and further reducing the risk of crosstalk between the light-emitting units 7, and ultimately improving the display effect of the display panel.

[0041] In some possible implementation manners, please refer to Figure 2a - Figure 2b , the display panel further includes a pixel defining layer 2 located between the first electrode 4 and the isolation structure 3. The pixel defining layer 2 defines a plurality of pixel openings 21. The pixel openings 21 communicate with the isolation openings 8, and the orthographic projection of the pixel openings 21 on the substrate 1 is located within the orthographic projection of the isolation openings 8 on the substrate 1.

[0042] Optionally, the light-emitting unit 7 includes a first electrode 4, a light-emitting functional part 5, and a second electrode 6 that are sequentially stacked in the thickness direction of the substrate 1. The isolation structure 3 includes a conductive material. The second electrode 6 is electrically connected to the first isolation part 31, and a part of the first electrode 4 is exposed through the pixel opening 21.

[0043] The arrangement of the isolation structure 3 enables the display panel to form the film layers of the light-emitting units 7 of different colors in different isolation openings 8 without a fine mask. Specifically, since the second isolation part 32 is located on the side of the first isolation part 31 away from the substrate 1 and the lateral width of the second isolation part 32 is greater than that of the first isolation part 31, when forming the light-emitting material layer, the light-emitting material layer will be blocked by the isolation structure 3 to form a plurality of spaced-apart light-emitting functional parts 5. When forming the second electrode material layer, the second electrode material layer will be blocked by the isolation structure 3 to form a plurality of spaced-apart second electrodes 6. The isolation structure 3 includes a conductive material, and the second electrode 6 is electrically connected to the isolation structure 3. One first electrode 4, one light-emitting functional part 5, and one second electrode 6 form one light-emitting unit 7. Among them, the first electrode 4 can be an anode, and the second electrode 6 can be a cathode.

[0044] In this way, different light-emitting units 7 can be made independent of each other, thereby improving the crosstalk between adjacent light-emitting units 7 and enhancing the display effect of the display panel. At the same time, due to the presence of the isolation structure 3, the light-emitting material layer and the second electrode material layer in each color of the light-emitting unit 7 in the display panel can be prepared as a whole surface first and then patterned, so that the fine mask can be eliminated, and further the manufacturing cost of the display panel can be saved.

[0045] In some possible implementation manners, please refer to Figure 2a - Figure 2b , the second isolation part 32 further includes a main body part 322, and the protruding part 321 and the main body part 322 are connected to each other along a direction parallel to the substrate 1.

[0046] Optionally, the orthographic projection of the main body part 322 on the substrate 1 surrounds the orthographic projection of the protruding part 321 on the substrate 1.

[0047] Optionally, the orthographic projection of the side of the main body part 322 close to the substrate 1 on the substrate 1 coincides with the orthographic projection of the side of the first isolation part 31 away from the substrate 1 on the substrate 1.

[0048] The part of the second isolation part 32 protruding relative to the first isolation part 31 is the protruding part 321, and the part of the second isolation part 32 overlapping with the side of the first isolation part 31 away from the substrate 1 is the main body part 322. A first arc surface 3211 is provided on the side of the main body part 322 close to the substrate 1, which can reduce the impact of the etching solution on the second isolation part 32.

[0049] In some possible implementation manners, please refer to againFigure 2b In the direction away from the substrate 1, on the side of the protrusion 321 close to the substrate 1, there is a first arc surface 3211 protruding based on the plane where the substrate 1 is located.

[0050] In this embodiment, by completely setting the side of the protrusion 321 close to the substrate 1 as the first arc surface 3211, the impact of the etching solution on the second isolation part 32 can be made smaller, and it is more difficult for the second isolation part 32 to warp away from the substrate 1.

[0051] Preferably, please refer to again Figure 2b In the direction away from the substrate 1, on the side of the protrusion 321 away from the substrate 1, there is a second arc surface 3212 protruding based on the plane where the substrate 1 is located, that is, the second arc surface 3212 protrudes in the direction away from the substrate 1.

[0052] Optionally, in the direction away from the substrate 1, on the side of the main body part 322 close to the substrate 1, there is a third arc surface 3221 protruding based on the plane where the substrate 1 is located, and the third arc surface 3221 is connected to the first arc surface 3211.

[0053] Optionally, in the direction away from the substrate 1, on the side of the main body part 322 away from the substrate 1, there is a fourth arc surface 3222 protruding based on the plane where the substrate 1 is located, and the fourth arc surface 3222 is connected to the second arc surface 3212.

[0054] Optionally, the pattern formed by the orthographic projection of the first arc surface 3211 and the third arc surface 3221 on the substrate 1 overlaps with the pattern formed by the orthographic projection of the second arc surface 3212 and the fourth arc surface 3222 on the substrate 1.

[0055] In this embodiment, a second arc surface 3212 is provided at a position corresponding to the first arc surface 3211 on the side of the protrusion 321 away from the substrate 1, a third arc surface 3221 connected to the first arc surface 3211 is provided on the side of the main body part 322 close to the substrate 1, a fourth arc surface 3222 is provided at a position corresponding to the third arc surface 3221 on the side of the main body part 322 away from the substrate 1, and the fourth arc surface 3222 is connected to the second arc surface 3212. In this way, both the side of the second isolation part 32 close to the substrate 1 and the side away from the substrate 1 are provided with arc surfaces, which can further reduce the impact of the etching solution on the second isolation part 32.

[0056] In some possible implementation manners, please refer to Figure 3, the display panel further includes a cushion layer 9 located between the isolation structure 3 and the substrate 1. The cushion layer 9 includes a plurality of cushion portions 91 arranged at intervals. In the direction away from the substrate 1, one side of the cushion portion 91 away from the substrate 1 includes a fifth arc surface 911 protruding based on the plane where the substrate 1 is located. The orthographic projection of the fifth arc surface 911 on the substrate 1 overlaps with the pattern formed by the orthographic projections of the first arc surface 3211 and the third arc surface 3221 on the substrate 1.

[0057] Optionally, the material of the cushion portion 91 includes an organic material.

[0058] Optionally, the material of the cushion portion 91 includes polyimide.

[0059] In this embodiment, the cushion portion 91 is provided on the side of the isolation structure 3 close to the substrate 1. In the direction away from the substrate 1, one side of the cushion portion 91 away from the substrate 1 includes a fifth arc surface 911 protruding based on the plane where the substrate 1 is located. According to the deposition relationship of the film layer, when forming the isolation material layer 15, on the side of the isolation material layer 15 close to the substrate 1, an arc surface including the first arc surface 3211 and the third arc surface 3221 corresponding to the fifth arc surface 911 will be formed, and on the side of the isolation material layer 15 away from the substrate 1, an arc surface including the second arc surface 3212 and the fourth arc surface 3222 corresponding to the first arc surface 3211 and the third arc surface 3221 respectively will be formed. After forming the isolation structure 3, the first arc surface 3211, the second arc surface 3212, the third arc surface 3221, and the fourth arc surface 3222 will naturally be formed at the corresponding positions of the second isolation portion 32. In this way, there is no need to set up a dedicated process to form the first arc surface 3211, thereby reducing the process cost of forming the first arc surface 3211.

[0060] The following gives several schemes for the cushion layer 9 to be located at different positions of the display panel.

[0061] In some embodiments, at least a part of the cushion portion 91 is located between the first electrode 4 and the substrate 1. In the direction away from the substrate 1, one side of the first electrode 4 close to the substrate 1 includes a sixth arc surface 41 protruding based on the plane where the substrate 1 is located. The sixth arc surface 41 is in mutual contact with a part of the fifth arc surface 911.

[0062] Optionally, in the direction away from the substrate 1, one side of the first electrode 4 away from the substrate 1 includes a seventh arc surface 42 protruding based on the plane where the substrate 1 is located. The orthographic projection of the sixth arc surface 41 on the substrate 1 overlaps with the orthographic projection of the seventh arc surface 42 on the substrate 1.

[0063] Optionally, in the direction away from the substrate 1, one side of the pixel defining layer 2 close to the substrate 1 includes an eighth arc surface 22 protruding based on the plane where the substrate 1 is located. The eighth arc surface 22 is in mutual contact with the seventh arc surface 42 and a part of the fifth arc surface 911.

[0064] Optionally, in the direction away from the substrate 1, on the side of the pixel defining layer 2 away from the substrate 1, there is a ninth arc surface 23 protruding based on the plane where the substrate 1 is located, and the orthographic projection of the eighth arc surface 22 on the substrate 1 is located within the orthographic projection of the ninth arc surface 23 on the substrate 1.

[0065] Optionally, there is a gap between the ninth arc surface 23 and the first arc surface 3211, and the orthographic projection of the first arc surface 3211 on the substrate 1 overlaps with the orthographic projection of the ninth arc surface 23 on the substrate 1.

[0066] Optionally, in the direction away from the substrate 1, on the side of the first isolation part 31 close to the substrate 1, there is a tenth arc surface 311 protruding based on the plane where the substrate 1 is located, and the tenth arc surface 311 is in mutual contact with a part of the ninth arc surface 23.

[0067] Optionally, in the direction away from the substrate 1, on the side of the first isolation part 31 away from the substrate 1, there is an eleventh arc surface 312 protruding based on the plane where the substrate 1 is located, and the eleventh arc surface 312 is in mutual contact with the third arc surface 3221.

[0068] In this embodiment, the heightening part 91 is arranged on the side of the first electrode 4 close to the substrate 1. According to the deposition relationship of the film layers, after the first electrode 4 is formed, a part of the side of the first electrode 4 close to the substrate 1 in contact with the heightening part 91 will naturally form a sixth arc surface 41, and the side of the first electrode 4 away from the substrate 1 will naturally form a seventh arc surface 42 corresponding to the sixth arc surface 41.

[0069] After the pixel defining layer 2 is formed, parts of the pixel defining layer 2 in contact with the heightening part 91 and the seventh arc surface 42 will naturally form an eighth arc surface 22, and the side of the pixel defining layer 2 away from the substrate 1 will naturally form a ninth arc surface 23 corresponding to the eighth arc surface 22; after the first isolation part 31 is formed, a part of the side of the first isolation part 31 close to the substrate 1 in contact with the ninth arc surface 23 will naturally form a tenth arc surface 311, and the side of the first isolation part 31 away from the substrate 1 will naturally form an eleventh arc surface 312 corresponding to the tenth arc surface 311. The part of the second isolation part 32 in contact with the eleventh arc surface 312 will naturally form a third arc surface 3221, and the side of the second isolation part 32 away from the substrate 1 will naturally form a fourth arc surface 3222 corresponding to the third arc surface 3221.

[0070] The above arc surfaces are naturally formed through the fifth arc surface 911 on the side of the heightening part 91 away from the substrate 1. The first arc surface 3211 on the side of the protruding part 321 facing the substrate 1 can effectively reduce the impact force of the etching solution on the protruding part 321, making it difficult for the suspended protruding part 321 to warp in the direction away from the substrate 1.

[0071] In some other embodiments, please refer to Figure 4, the spacer layer 9 is located on the side of the pixel defining layer 2 close to the substrate 1. In the direction away from the substrate 1, on the side of the pixel defining layer 2 close to the substrate 1, there is an eighth arc surface 22 protruding based on the plane where the substrate 1 is located, and the eighth arc surface 22 is in mutual contact with the fifth arc surface 911.

[0072] Optionally, in the direction away from the substrate 1, on the side of the pixel defining layer 2 away from the substrate 1, there is a ninth arc surface 23 protruding based on the plane where the substrate 1 is located, and the orthographic projection of the eighth arc surface 22 on the substrate 1 is located within the orthographic projection of the ninth arc surface 23 on the substrate 1.

[0073] Optionally, there is a gap between the ninth arc surface 23 and the first arc surface 3211, and the orthographic projection of the first arc surface 3211 on the substrate 1 overlaps with the orthographic projection of the ninth arc surface 23 on the substrate 1.

[0074] Optionally, in the direction away from the substrate 1, on the side of the first isolation part 31 close to the substrate 1, there is a tenth arc surface 311 protruding based on the plane where the substrate 1 is located, and the tenth arc surface 311 is in mutual contact with a part of the ninth arc surface 23.

[0075] Optionally, in the direction away from the substrate 1, on the side of the first isolation part 31 away from the substrate 1, there is an eleventh arc surface 312 protruding based on the plane where the substrate 1 is located, and the eleventh arc surface 312 is in mutual contact with the third arc surface 3221.

[0076] In this embodiment, the heightening part 91 is arranged between the first electrode 4 and the pixel defining layer 2. According to the deposition relationship of the film layers, after the pixel defining layer 2 is formed, the part of the pixel defining layer 2 in contact with the heightening part 91 will naturally form the eighth arc surface 22, and on the side of the pixel defining layer 2 away from the substrate 1, there will naturally be formed a ninth arc surface 23 corresponding to the eighth arc surface 22; after the first isolation part 31 is formed, the part of the first isolation part 31 in contact with the ninth arc surface 23 on the side close to the substrate 1 will naturally form the tenth arc surface 311, and on the side of the first isolation part 31 away from the substrate 1, there will naturally be formed an eleventh arc surface 312 corresponding to the tenth arc surface 311. The part of the second isolation part 32 in contact with the eleventh arc surface 312 will naturally form the third arc surface 3221, and on the side of the second isolation part 32 away from the substrate 1, there will naturally be formed a fourth arc surface 3222 corresponding to the third arc surface 3221.

[0077] The above arc surfaces are naturally formed through the fifth arc surface 911 on the side of the heightening part 91 away from the substrate 1. The first arc surface 3211 on the side of the protruding part 321 facing the substrate 1 can effectively reduce the impact force of the etching solution on the protruding part 321, making it difficult for the suspended protruding part 321 to warp in the direction away from the substrate 1.

[0078] In still other embodiments, please refer to Figure 5, the elevation portion 91 is disposed between the pixel defining layer 2 and the first isolation portion 31. In the direction away from the substrate 1, one side of the first isolation portion 31 close to the substrate 1 includes a tenth arc surface 311 protruding based on the plane where the substrate 1 is located, and the tenth arc surface 311 is in mutual contact with a part of the fifth arc surface 911.

[0079] Optionally, there is a gap between the fifth arc surface 911 and the first arc surface 3211, and the orthographic projection of the first arc surface 3211 on the substrate 1 overlaps with the orthographic projection of the fifth arc surface 911 on the substrate 1.

[0080] Optionally, in the direction away from the substrate 1, one side of the first isolation portion 31 away from the substrate 1 includes an eleventh arc surface 312 protruding based on the plane where the substrate 1 is located, and the eleventh arc surface 312 is in mutual contact with the third arc surface 3221.

[0081] In this embodiment, the elevation portion 91 is disposed between the pixel defining layer 2 and the first isolation portion 31. According to the deposition relationship of the film layers, after the first isolation portion 31 is formed, a part of the first isolation portion 31 in contact with the elevation portion 91 will naturally form the tenth arc surface 311, and one side of the first isolation portion 31 away from the substrate 1 will naturally form an eleventh arc surface 312 corresponding to the tenth arc surface 311. A part of the second isolation portion 32 in contact with the eleventh arc surface 312 will naturally form the third arc surface 3221, and one side of the second isolation portion 32 away from the substrate 1 will naturally form a fourth arc surface 3222 corresponding to the third arc surface 3221.

[0082] The above arc surfaces are naturally formed through the fifth arc surface 911 on the side of the elevation portion 91 away from the substrate 1. The first arc surface 3211 on the side of the protrusion 321 facing the substrate 1 can effectively reduce the impact force of the etching solution on the protrusion 321, so that the suspended protrusion 321 is not easily warped in the direction away from the substrate 1.

[0083] In some possible implementation manners, please refer to again Figure 5 , one side of the elevation portion 91 close to the substrate 1 is a flat surface.

[0084] In this embodiment, setting one side of the elevation portion 91 close to the substrate 1 as a flat surface can improve the stability of the elevation portion 91, thereby improving the reliability of the display panel.

[0085] Optionally, the orthographic projection of the elevation portion 91 on the substrate 1 is located outside the orthographic projection of the side of the pixel opening 21 close to the substrate 1 on the substrate 1. Thus, setting the elevation portion 91 will not affect the normal display of the light-emitting unit 7.

[0086] Preferably, the radian of the fifth arc surface 911 is greater than or equal to 50° and less than or equal to 70°. For example, the radian of the fifth arc surface 911 can be 50°, 52°, 55°, 60°, 65°, 68°, 70°, etc.

[0087] Optionally, the radian of the first arc surface 3211 is greater than or equal to 50° and less than or equal to 70°. For example, the radian of the first arc surface 3211 can be 50°, 52°, 55°, 60°, 65°, 68°, 70°, etc.

[0088] In this embodiment, by reasonably setting the radian of the fifth arc surface 911, the radian of the first arc surface 3211 can be made more appropriate, thereby further reducing the impact force of the etching solution on the protrusion 321.

[0089] In some possible implementation manners, please refer to Figure 5 , along the thickness direction Z of the substrate 1, the thickness H of the elevation portion 91 is greater than or equal to 1 μm and less than or equal to 2 μm. For example, the thickness H can be 1.1 μm, 1.3 μm, 1.5 μm, 1.7 μm, 1.9 μm, 2 μm, etc. By reasonably setting the thickness H, a more effective first arc surface 3211 for reducing the impact force of the etching solution can be formed.

[0090] In some possible implementation manners, please refer to Figure 6 - Figure 8 , the display panel further includes a packaging unit 10 located on the side of the light-emitting unit 7 away from the substrate 1, and a part of the packaging unit 10 extends from the side of the isolation structure 3 facing the isolation opening 8 to the side of the isolation structure 3 away from the substrate 1.

[0091] Optionally, the number of the packaging units 10 is multiple, and at least two light-emitting units 7 with different light-emitting colors correspond to different packaging units 10.

[0092] Optionally, the packaging units 10 are arranged at intervals on the side of the isolation structure 3 away from the substrate 1.

[0093] Optionally, there is a gap between the packaging unit 10 located on the side of the isolation structure 3 away from the substrate 1 and the side of the isolation structure 3 away from the substrate 1.

[0094] During the patterning process of the light-emitting unit 7, the first encapsulation material layer is disconnected at the isolation structure 3 to form the packaging unit 10, and the packaging unit 10 can completely and independently encapsulate the corresponding light-emitting unit 7, thereby improving the display characteristics of the display panel.

[0095] Preferably, the packaging unit 10 is in close contact with the side of the isolation structure 3 facing the isolation opening 8.

[0096] In the related art, since the second isolation part 32 is prone to warp away from the substrate 1, there is likely to be a gap between the encapsulation unit 10 and the isolation structure 3, thus greatly reducing the encapsulation effect of the encapsulation unit 10 on the corresponding light-emitting unit 7.

[0097] In this embodiment, since the above solution can prevent the second isolation part 32 from warping away from the substrate 1, there is less likely to be a gap between the encapsulation unit 10 and the isolation structure 3, and the encapsulation unit 10 can more effectively encapsulate the corresponding light-emitting unit 7.

[0098] Preferably, in the direction away from the substrate 1, on the side of the encapsulation unit 10 close to the substrate 1 and on the side of the isolation structure 3 away from the substrate 1, there is a fourteenth arc surface 101 protruding based on the plane where the substrate 1 is located, and the orthographic projection of the fourteenth arc surface 101 on the substrate 1 is located within the orthographic projection of the first arc surface 3211 on the substrate 1.

[0099] Optionally, in the direction away from the substrate 1, on the side of the encapsulation unit 10 away from the substrate 1 and on the side of the isolation structure 3 away from the substrate 1, there is a fifteenth arc surface 102 protruding based on the plane where the substrate 1 is located, and the orthographic projection of the fifteenth arc surface 102 on the substrate 1 overlaps with the orthographic projection of the fourteenth arc surface 101 on the substrate 1.

[0100] According to the deposition relationship of the film layer, the fourteenth arc surface 101 will be formed at the position corresponding to the second arc surface 3212 on the side of the encapsulation unit 10 close to the substrate 1, and the fifteenth arc surface 102 will be formed at the position corresponding to the fourteenth arc surface 101 on the side of the encapsulation unit 10 away from the substrate 1.

[0101] In some possible implementation manners, please refer to Figure 9 , the display panel further includes a second encapsulation layer 11 on the side of the encapsulation unit 10 away from the substrate 1 and a third encapsulation layer 12 on the side of the second encapsulation layer 11 away from the substrate 1.

[0102] Preferably, the materials of the encapsulation unit 10 and the third encapsulation layer 12 both include inorganic materials, and the material of the second encapsulation layer 11 includes organic materials.

[0103] For example, the encapsulation unit 10 and the third encapsulation layer 12 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 11 can be formed by ink-jet printing (IJP). The second encapsulation layer 11 and the third encapsulation layer 12 can achieve a better encapsulation effect on the light-emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0104] In some possible implementation manners, please refer to againFigure 9 Moreover, the isolation structure 3 further includes a third isolation portion 33 on the side of the first isolation portion 31 facing the substrate 1, and the second electrode 6 is electrically connected to the third isolation portion 33.

[0105] Optionally, the material of the third isolation portion 33 includes molybdenum or titanium; and / or, the material of the first isolation portion 31 includes aluminum, silver or copper; and / or, the material of the second isolation portion 32 includes titanium or molybdenum.

[0106] The third isolation portion 33 includes a conductive material, and the second electrode 6 corresponding to the light-emitting unit 7 extends to contact the side wall of the third isolation portion 33, so as to electrically connect the second electrode 6 corresponding to the light-emitting unit 7 to the third isolation portion 33.

[0107] Specifically, the material of the third isolation portion 33 includes molybdenum or titanium; and / or, the material of the first isolation portion 31 includes aluminum, silver or copper; and / or, the material of the second isolation portion 32 includes titanium or molybdenum. In this way, when the isolation structure 3 cuts off the second electrode material layer into the second electrode 6, the second electrode 6 is more likely to be electrically connected to the third isolation portion 33.

[0108] The orthographic projection of the light-emitting functional portion 5 on the substrate 1 is located outside the orthographic projection of the third isolation portion 33 on the substrate 1. In this way, the light-emitting functional portion 5 does not overlap with the isolation structure 3, thereby effectively improving the crosstalk problem between the light-emitting units 7.

[0109] In some possible implementation manners, please refer to Figure 9 again. In the direction away from the substrate 1, the side of the third isolation portion 33 close to the substrate 1 includes a twelfth arc surface 331 protruding based on the plane where the substrate 1 is located, and the twelfth arc surface 331 is attached to a part of the ninth arc surface 23.

[0110] Preferably, in the direction away from the substrate 1, the side of the third isolation portion 33 away from the substrate 1 includes a thirteenth arc surface 332 protruding based on the plane where the substrate 1 is located, and the thirteenth arc surface 332 is attached to a part of the tenth arc surface 311.

[0111] According to the deposition relationship of the film layers, the portion of the third isolation portion 33 in contact with the ninth arc surface 23 of the pixel defining layer 2 will naturally form the twelfth arc surface 331, the portion of the third isolation portion 33 away from the substrate 1 corresponding to the twelfth arc surface 331 will form the thirteenth arc surface 332, and the portion of the first isolation portion 31 in contact with the thirteenth arc surface 332 will naturally form the tenth arc surface 311.

[0112] In some possible implementation manners, please refer to Figure 1 and Figure 10 . The present application further provides a method for manufacturing a display panel, and the method includes: S10: Provide the substrate 1.

[0113] S11: An isolation structure 3 is formed on one side of the substrate 1, and the isolation structure 3 encloses a plurality of isolation openings 8. The isolation structure 3 includes a first isolation portion 31 and a second isolation portion 32 which are sequentially stacked in a direction away from the substrate 1. The second isolation portion 32 includes a protrusion 321. The orthographic projection of the protrusion 321 on the substrate 1 is located outside the orthographic projection of the first isolation portion 31 on the side away from the substrate 1. In the direction away from the substrate 1, at least a portion of a side of the protrusion 321 close to the substrate 1 includes a first arc surface 3211 protruding based on the plane where the substrate 1 is located.

[0114] S12 : forming at least a portion of the light emitting unit 7 in the corresponding isolation opening 8 .

[0115] In the display panel formed by the above method, at least a portion of the protrusion 321 in the suspended portion of the second isolation portion 32 facing the substrate 1 is configured to include a first curved surface 3211 protruding from the plane where the substrate 1 is located. Figure 1 The dotted arrow shown indicates the flow direction of the etching liquid. Since the first curved surface 3211 protrudes in a direction away from the substrate 1 based on the plane where the substrate 1 is located, on the one hand, when the etching liquid reaches the first curved surface 3211 of the protrusion 321, the etching liquid will flow out more smoothly along the first curved surface 3211, thereby greatly reducing the impact of the etching liquid on the second isolation portion 32; on the other hand, the outflowing etching liquid will impact the inflowing etching liquid, thereby further reducing the impact force of the inflowing etching liquid on the second isolation portion 32, thereby making it difficult for the second isolation portion 32 to warp in a direction away from the substrate 1.

[0116] In some possible implementations, before the step of forming the isolation structure 3 on one side of the substrate 1, the step further includes: See also Figure 11 and Figure 12 A raising material layer 13 is formed on one side of the substrate 1, and the raising material layer 13 is patterned to form a plurality of raised portions 91 that are spaced apart from each other. In a direction away from the substrate 1, the side of the raised portion 91 away from the substrate 1 includes a fifth curved surface 911 that protrudes based on the plane where the substrate 1 is located, and the orthographic projection of the first curved surface 3211 on the substrate 1 overlaps with the orthographic projection of the fifth curved surface 911 on the substrate 1.

[0117] See also Figure 13 A first electrode layer is formed on one side of the substrate 1 , the first electrode layer includes a plurality of first electrodes 4 arranged at intervals, the first electrodes 4 extend to a portion of the fifth arc surface 911 , and an arc surface is naturally formed on the first electrodes 4 contacting the fifth arc surface 911 .

[0118] See also Figure 14, on the side of the cushion layer 9 away from the substrate 1, a pixel defining layer 2 and an isolation material layer 15 are sequentially formed. On the side of the isolation material layer 15 close to the substrate 1, a sixteenth arc surface 151 is formed at the position of the fifth arc surface 911, and the sixteenth arc surface 151 includes a first arc surface 3211.

[0119] At the position corresponding to the fifth arc surface 911, the pixel defining layer 2 will naturally form an arc surface, and at the position corresponding to the fifth arc surface 911 on the side of the isolation material layer 15 close to the substrate 1, a sixteenth arc surface 151 will naturally be formed.

[0120] Please refer to Figure 15 , the isolation material layer 15 and the pixel defining material layer 14 are sequentially patterned to form an isolation structure 3 and a pixel defining layer 2 respectively.

[0121] After patterning the isolation material layer 15, part of the sixteenth arc surface 151 will be removed, and the remaining part of the sixteenth arc surface 151 includes the first arc surface 3211 on the side of the protrusion 321 facing the substrate 1. In this way, the first arc surface 3211 can be formed more conveniently and at a lower cost through the above method.

[0122] Please refer to again Figure 6 , a light emitting unit 7 and a packaging unit 10 located on the side of the light emitting unit 7 away from the substrate 1 are sequentially formed in the isolation opening 8.

[0123] Through the above method, the cushion layer 9 can also be disposed between the first electrode 4 and the pixel defining layer 2, and the finally formed display panel is as Figure 7 shown; the cushion layer 9 can also be disposed between the isolation structure 3 and the pixel defining layer 2, and the finally formed display panel is as Figure 8 shown. The principle of forming the first arc surface 3211 is the same as that of the above embodiment, and will not be described in detail again.

[0124] In some possible implementation manners, the present application also provides an electronic device, which includes the display panel in the present application, or includes a display panel prepared by the preparation method of the display panel in the present application. The electronic device may include a device with image processing capabilities, for example, a server, a personal computer, a laptop computer, a mobile phone, a tablet computer, a wearable device, an in-vehicle display device, etc. Since the electronic device includes the display panel in the present application, the display effect of the electronic device is better.

[0125] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0126] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; an isolation structure, located on one side of the substrate, the isolation structure enclosing a plurality of isolation openings, the isolation structure comprising a first isolation portion and a second isolation portion sequentially stacked in a direction away from the substrate, the second isolation portion comprising a protrusion, the orthographic projection of the protrusion on the substrate being located outside the orthographic projection of the first isolation portion on the side away from the substrate, and in the direction away from the substrate, at least a portion of a side of the protrusion close to the substrate comprises a first curved surface protruding from a plane where the substrate is located; A plurality of light emitting units, at least parts of the light emitting units are located in the corresponding isolation openings.

2. The display panel according to claim 1, characterized in that: The second isolation portion further comprises a main body portion, and the protrusion and the main body portion are connected to each other along a direction parallel to the substrate; The orthographic projection of the main body on the substrate surrounds the orthographic projection of the protrusion on the substrate; The orthographic projection of a side of the main body portion close to the substrate on the substrate coincides with the orthographic projection of a side of the first isolation portion away from the substrate on the substrate.

3. The display panel according to claim 2, characterized in that: In a direction away from the substrate, a side of the protrusion close to the substrate is a first curved surface protruding based on the plane where the substrate is located; In a direction away from the substrate, a side of the protrusion away from the substrate includes a second curved surface protruding based on the plane where the substrate is located; In a direction away from the substrate, a side of the main body portion close to the substrate includes a third curved surface protruding based on a plane where the substrate is located, and the third curved surface is connected to the first curved surface.

4. The display panel according to claim 3, characterized in that: In a direction away from the substrate, a side of the main body away from the substrate comprises a fourth curved surface protruding based on a plane where the substrate is located, and the fourth curved surface is connected to the second curved surface; A pattern formed by orthographic projections of the first curved surface and the third curved surface on the substrate overlaps with a pattern formed by orthographic projections of the second curved surface and the fourth curved surface on the substrate.

5. The display panel according to claim 3, characterized in that: The display panel also includes a raising layer located between the isolation structure and the substrate, the raising layer includes a plurality of raising portions arranged at intervals, and in a direction away from the substrate, a side of the raising portion away from the substrate includes a fifth curved surface protruding based on a plane where the substrate is located, and an orthographic projection of the fifth curved surface on the substrate overlaps with a pattern formed by orthographic projections of the first curved surface and the third curved surface on the substrate.

6. The display panel according to claim 5, characterized in that: The light-emitting unit includes a first electrode, at least a portion of the raised portion is located between the first electrode and the substrate, and in a direction away from the substrate, a side of the first electrode close to the substrate includes a sixth curved surface protruding from a plane where the substrate is located, and the sixth curved surface is in contact with a portion of the fifth curved surface; In a direction away from the substrate, a side of the first electrode away from the substrate includes a seventh curved surface protruding from a plane where the substrate is located, and an orthographic projection of the sixth curved surface on the substrate overlaps with an orthographic projection of the seventh curved surface on the substrate.

7. The display panel according to claim 6, characterized in that: The display panel further includes a pixel defining layer located between the first electrode and the isolation structure, the pixel defining layer defines a plurality of pixel openings, the pixel openings are connected to the isolation openings, and in a direction away from the substrate, a side of the pixel defining layer close to the substrate includes an eighth curved surface protruding from a plane where the substrate is located, and the eighth curved surface is in contact with the seventh curved surface and a portion of the fifth curved surface; In a direction away from the substrate, a side of the pixel definition layer away from the substrate comprises a ninth curved surface protruding from a plane where the substrate is located, and an orthographic projection of the eighth curved surface on the substrate is located within an orthographic projection of the ninth curved surface on the substrate; There is a gap between the ninth curved surface and the first curved surface, and the orthographic projection of the first curved surface on the substrate overlaps with the orthographic projection of the ninth curved surface on the substrate; In a direction away from the substrate, a side of the first isolation portion close to the substrate includes a tenth curved surface protruding from a plane where the substrate is located, and the tenth curved surface is in contact with a portion of the ninth curved surface; In a direction away from the substrate, a side of the first isolation portion away from the substrate includes an eleventh curved surface protruding based on a plane where the substrate is located, and the eleventh curved surface is in contact with the third curved surface.

8. The display panel according to claim 3, characterized in that: Along the thickness direction of the substrate, the display panel also includes a raising layer and a pixel defining layer which are stacked in sequence between the substrate and the isolation structure, the pixel defining layer defines a plurality of pixel openings, the pixel openings are connected to the isolation openings, and the raising layer includes a plurality of raised portions which are spaced apart; in the direction away from the substrate, the side of the raised portion away from the substrate includes a fifth curved surface protruding based on the plane where the substrate is located, and the side of the pixel defining layer close to the substrate includes an eighth curved surface protruding based on the plane where the substrate is located, and the eighth curved surface is in contact with the fifth curved surface.

9. The display panel according to claim 8, characterized in that: In a direction away from the substrate, a side of the pixel definition layer away from the substrate comprises a ninth curved surface protruding from a plane where the substrate is located, and an orthographic projection of the eighth curved surface on the substrate is located within an orthographic projection of the ninth curved surface on the substrate; There is a gap between the ninth curved surface and the first curved surface, and the orthographic projection of the first curved surface on the substrate overlaps with the orthographic projection of the ninth curved surface on the substrate; In a direction away from the substrate, a side of the first isolation portion close to the substrate includes a tenth curved surface protruding from a plane where the substrate is located, and the tenth curved surface is in contact with a portion of the ninth curved surface; In a direction away from the substrate, a side of the first isolation portion away from the substrate includes an eleventh curved surface protruding based on a plane where the substrate is located, and the eleventh curved surface is in contact with the third curved surface.

10. The display panel according to claim 3, characterized in that: Along the thickness direction of the substrate, the display panel further comprises a pixel defining layer and a padding layer which are sequentially stacked between the substrate and the isolation structure, the pixel defining layer defines a plurality of pixel openings, the pixel openings are connected to the isolation openings, and the padding layer comprises a plurality of padding portions which are spaced apart; In the direction away from the substrate, the side of the raised portion away from the substrate includes a fifth curved surface protruding based on the plane where the substrate is located, and the side of the first isolation portion close to the substrate includes a tenth curved surface protruding based on the plane where the substrate is located, and the tenth curved surface is in contact with part of the fifth curved surface.

11. The display panel according to claim 10, characterized in that: There is a gap between the fifth curved surface and the first curved surface, and the orthographic projection of the first curved surface on the substrate overlaps with the orthographic projection of the fifth curved surface on the substrate; In a direction away from the substrate, a side of the first isolation portion away from the substrate includes an eleventh curved surface protruding based on a plane where the substrate is located, and the eleventh curved surface is in contact with the third curved surface.

12. The display panel according to claim 7, characterized in that: The side of the raised portion close to the substrate is a flat surface; The orthographic projection of the raised portion on the substrate is located outside the orthographic projection of a side of the pixel opening close to the substrate on the substrate; The curvature of the fifth curved surface is greater than or equal to 50° and less than or equal to 70°, and the curvature of the first curved surface is greater than or equal to 50° and less than or equal to 70°.

13. The display panel according to any one of claims 5 to 11, characterized in that: Along the thickness direction of the substrate, the thickness of the raised portion is greater than or equal to 1 μm and less than or equal to 2 μm; The material of the raised portion includes an organic material, and the material of the raised portion includes polyimide.

14. The display panel according to any one of claims 1 to 11, characterized in that: The display panel further comprises a packaging unit located at a side of the light emitting unit away from the substrate, wherein a portion of the packaging unit extends from a side of the isolation structure toward the isolation opening to a side of the isolation structure away from the substrate; In a direction away from the substrate, a side of the packaging unit located on a side of the isolation structure away from the substrate and close to the substrate comprises a fourteenth curved surface protruding based on the plane where the substrate is located, and an orthographic projection of the fourteenth curved surface on the substrate is located within an orthographic projection of the first curved surface on the substrate; In a direction away from the substrate, a side of the packaging unit located on a side of the isolation structure away from the substrate away from the substrate includes a fifteenth curved surface protruding based on the plane where the substrate is located, and an orthographic projection of the fifteenth curved surface on the substrate overlaps with an orthographic projection of the fourteenth curved surface on the substrate; The number of the packaging units is multiple, and at least two of the light-emitting units with different light-emitting colors correspond to different packaging units; The packaging unit is arranged at intervals on a side of the isolation structure away from the substrate; A gap is formed between the packaging unit located at a side of the isolation structure away from the substrate and a side of the isolation structure away from the substrate; The packaging unit and the isolation structure are attached to each other at a side facing the isolation opening.

15. The display panel according to claim 14, characterized in that: The display panel further comprises a second encapsulation layer located on a side of the encapsulation unit away from the substrate and a third encapsulation layer located on a side of the second encapsulation layer away from the substrate; The materials of the encapsulation unit and the third encapsulation layer both include inorganic materials; The material of the second encapsulation layer includes organic material.

16. The display panel according to claim 7 or 9, characterized in that: The light-emitting unit comprises a first electrode, a light-emitting functional part, and a second electrode which are sequentially stacked along the thickness direction of the substrate, the isolation structure comprises a conductive material, and the second electrode is electrically connected to the first isolation part; The isolation structure further includes a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode is electrically connected to the third isolation portion; The orthographic projection of the light-emitting functional part on the substrate is located outside the orthographic projection of the first isolation part on the substrate; The material of the third isolation portion includes molybdenum or titanium; and / or the material of the first isolation portion includes aluminum, silver or copper; and / or the material of the second isolation portion includes titanium or molybdenum.

17. The display panel according to claim 16, characterized in that: In a direction away from the substrate, a side of the third isolation portion close to the substrate includes a twelfth curved surface protruding based on the plane where the substrate is located, and the twelfth curved surface is in contact with a portion of the ninth curved surface; In a direction away from the substrate, a side of the third isolation portion away from the substrate includes a thirteenth curved surface protruding based on a plane where the substrate is located, and the thirteenth curved surface is in contact with a portion of the tenth curved surface.

18. A method for preparing a display panel, characterized in that: The method comprises: providing a substrate; An isolation structure is formed on one side of the substrate, the isolation structure encloses a plurality of isolation openings, the isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, the second isolation portion comprises a protrusion, the orthographic projection of the protrusion on the substrate is located outside the orthographic projection of the first isolation portion on the substrate away from the substrate, and in the direction away from the substrate, at least a portion of a side of the protrusion close to the substrate comprises a first arc surface protruding from a plane where the substrate is located; At least a portion of the light emitting unit is formed in the corresponding isolation opening.

19. The method for preparing a display panel according to claim 18, characterized in that: Before the step of forming an isolation structure on one side of the substrate, the method further includes: A padding material layer is formed on one side of the substrate, and the padding material layer is patterned to form a plurality of padding portions that are spaced apart from each other, wherein in a direction away from the substrate, a side of the padding portion away from the substrate includes a fifth curved surface that is convex based on a plane where the substrate is located, and an orthographic projection of the first curved surface on the substrate overlaps with an orthographic projection of the fifth curved surface on the substrate; The step of forming an isolation structure on one side of the substrate comprises: An isolation material layer is formed on a side of the padding layer away from the substrate, and a sixteenth arc surface is formed on a side of the isolation material layer close to the substrate at the position of the fifth arc surface, wherein the sixteenth arc surface includes the first arc surface; The isolation material layer is patterned to form an isolation structure.

20. An electronic device, characterized in that: The electronic device comprises the display panel according to any one of claims 1 to 17, or comprises a display panel prepared by the method for preparing a display panel according to claim 18 or 19.

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