Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel is provided with a first area and a second area which are adjacent to each other. The display panel comprises a substrate; the isolation structure is arranged on one side of the substrate and located in the first area, and an isolation opening is defined by the isolation structure; the auxiliary structures are located in the second area and arranged on the side, facing the isolation structure, of the substrate, the auxiliary structures and the isolation structure are arranged at intervals, and the adjacent auxiliary structures are arranged at intervals; the light-emitting layer comprises a light-emitting unit arranged in the isolation opening. The display panel provided by the embodiment of the invention has relatively good process reliability.

Description

Technical Field

[0001] This application belongs to the technical field of displays, and in particular relates to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] Flat panel 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 devices.

[0003] However, the process reliability of current OLED display products needs to be improved. Summary of the Invention

[0004] Embodiments of this application provide a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the process reliability of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel having adjacent first and second regions. The display panel includes: a substrate; an isolation structure disposed on one side of the substrate and located in the first region, the isolation structure enclosing an isolation opening; a plurality of auxiliary structures located in the second region and disposed on the side of the substrate facing the isolation structure, the auxiliary structures being spaced apart from the isolation structure, and adjacent auxiliary structures being spaced apart; and a light-emitting layer including a light-emitting unit disposed in the isolation opening.

[0006] According to an embodiment of the first aspect of this application, the display panel further includes a protrusion structure connected to the isolation structure and disposed on the side of the isolation structure facing the second region, the auxiliary structures being spaced apart from the protrusion structure.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the number of protrusion structures is multiple, and the multiple protrusion structures are spaced apart from each other and disposed around at least a part of the second region.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the protrusion structure extends from the isolation structure toward the second region.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the protrusion structure on the substrate has a first edge and a second edge, and the first edge and the second edge intersect.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the first edge and the second edge are perpendicular to each other.

[0011] According to any of the foregoing embodiments of the first aspect of the present application, the first edge is located on the side of the second edge away from the isolation structure, and the second edge is disposed on both sides of the first edge.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the isolation structure on the substrate has a third edge on the side facing the second region, and the second edge intersects the third edge.

[0013] According to any of the foregoing embodiments of the first aspect of the present application, the second edge is connected between the first edge and the third edge, and the second edge is perpendicular to the third edge.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure includes a first isolation portion and a second isolation portion located on the side of the first isolation portion away from the substrate. The second isolation portion protrudes from the first isolation portion toward the isolation opening. The protruding structure includes a first branch portion, and the first branch portion is integrally formed with the first isolation portion, and / or the protruding structure includes a second branch portion, and the second branch portion is integrally formed with the second isolation portion.

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the protruding structure only includes the second branch portion. There is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and the orthographic projection area of the protruding structure on the substrate is less than or equal to twice the first difference.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the protruding structure includes a first branch portion and a second branch portion, and the second branch portion protrudes from the first branch portion toward the second region.

[0017] According to any of the foregoing embodiments of the first aspect of the present application, there is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and there is a third difference between the orthographic projection area of the second branch portion on the substrate and the orthographic projection area of the first branch portion on the substrate, and the first difference is less than the third difference.

[0018] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the auxiliary structure on the substrate has a fourth edge and a fifth edge, and the fourth edge and the fifth edge are intersectingly arranged.

[0019] According to any of the foregoing embodiments of the first aspect of the present application, the fourth edge and the fifth edge are perpendicularly arranged.

[0020] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the isolation structure on the substrate has a third edge on the side facing the second region, and the fifth edge intersects the third edge.

[0021] According to any of the aforementioned implementations of the first aspect of the present application, the display panel is provided with a functional hole in the second region, and a plurality of auxiliary structures are arranged around at least a portion of the functional hole.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the auxiliary structure is arranged close to the isolation structure.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first isolation portion and a second isolation portion located on a side of the first isolation portion facing away from the substrate, and the second isolation portion is arranged to protrude from the first isolation portion toward the isolation opening.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the auxiliary structure includes a first auxiliary part and a second auxiliary part located on the side of the first auxiliary part facing away from the substrate, the first auxiliary part and the first isolation part are arranged in the same layer and material, and / or the second auxiliary part and the second isolation part are arranged in the same layer and material.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the second auxiliary portion is arranged to protrude from the first auxiliary portion.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, there is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and there is a second difference between the orthographic projection area of the second auxiliary portion on the substrate and the orthographic projection area of the first auxiliary portion on the substrate, and the first difference is smaller than the second difference.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a first electrode layer and a pixel definition layer, the first electrode layer includes a first electrode arranged on the side of the light-emitting layer facing the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel defining portion is arranged around at least a portion of the first electrode, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0028] An embodiment of the first aspect of the present application also provides a display panel having adjacent first and second areas, the display panel comprising: a substrate; an isolation structure, arranged on one side of the substrate and located in the first area, the isolation structure enclosing an isolation opening; a protruding structure, connected to the isolation structure and arranged on the side of the isolation structure facing the second area; and a light-emitting layer, comprising a light-emitting unit arranged in the isolation opening.

[0029] According to an embodiment of the first aspect of the present application, there are multiple protruding structures, and the multiple protruding structures are spaced apart from each other and arranged around at least a portion of the second area.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the protruding structure extends from the isolation structure toward the second region.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the protruding structure on the substrate has a first edge and a second edge, and the first edge and the second edge are arranged to intersect.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the first edge and the second edge are arranged perpendicular to each other.

[0033] According to any of the aforementioned embodiments of the first aspect of the present application, the first edge is located on a side of the second edge away from the isolation structure, and the second edge is provided on both sides of the first edge.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure has a third edge on a side of its orthographic projection on the substrate facing the second region, and the second edge intersects the third edge.

[0035] According to any of the aforementioned embodiments of the first aspect of the present application, the second edge is connected between the first edge and the third edge, and the second edge is perpendicular to the third edge.

[0036] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes at least two auxiliary structures arranged on a side of the protruding structure away from the isolation structure and located in the second area, the auxiliary structures are spaced apart from the protruding structure, and adjacent auxiliary structures are spaced apart.

[0037] According to any of the aforementioned implementations of the first aspect of the present application, the display panel is provided with a functional hole in the second region, and a plurality of auxiliary structures are arranged around at least a portion of the functional hole.

[0038] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the auxiliary structure on the substrate has a fourth edge and a fifth edge, and the fourth edge and the fifth edge are arranged to intersect.

[0039] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth edge and the fifth edge are arranged perpendicular to each other.

[0040] According to any of the aforementioned embodiments of the first aspect of the present application, the auxiliary structure includes a first auxiliary portion and a second auxiliary portion located on a side of the first auxiliary portion facing away from the substrate, and the second auxiliary portion is arranged to protrude from the first auxiliary portion.

[0041] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first isolation portion and a second isolation portion located on a side of the first isolation portion facing away from the substrate, and the second isolation portion is arranged to protrude from the first isolation portion toward the isolation opening.

[0042] According to any of the foregoing embodiments of the first aspect of the present application, the convex structure includes a first part, and the first part is integrally formed with the first isolation part, and / or the convex structure includes a second part, and the second part is integrally formed with the second isolation part.

[0043] According to any of the foregoing embodiments of the first aspect of the present application, the convex structure only includes a second part, and there is a first difference between the orthographic projection area of the second isolation part on the substrate and the orthographic projection area of the first isolation part on the substrate, and the orthographic projection area of the convex structure on the substrate is less than or equal to twice the first difference.

[0044] According to any of the foregoing embodiments of the first aspect of the present application, the convex structure includes a first part and a second part, and the second part protrudes from the first part toward the second region.

[0045] According to any of the foregoing embodiments of the first aspect of the present application, there is a first difference between the orthographic projection area of the second isolation part on the substrate and the orthographic projection area of the first isolation part on the substrate, and there is a third difference between the orthographic projection area of the second part on the substrate and the orthographic projection area of the first part on the substrate, and the first difference is less than the third difference.

[0046] According to any of the foregoing embodiments of the first aspect of the present application, the display panel further includes a first electrode layer and a pixel definition layer. The first electrode layer includes a first electrode disposed on the side of the light-emitting layer facing the substrate. The pixel definition layer includes a pixel defining part and a pixel opening formed by surrounding the pixel defining part. The pixel defining part surrounds at least part of the first electrode, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0047] An embodiment of the second aspect of the present application provides a display device, and the display device includes the display panel of any of the foregoing embodiments.

[0048] An embodiment of the third aspect of the present application provides a method for manufacturing a display panel. The display panel has a first region and a second region. The manufacturing method includes:

[0049] Preparing a first electrode layer on the substrate, and the first electrode layer includes at least two first electrodes arranged at intervals;

[0050] Preparing a pixel definition material layer on the first electrode layer;

[0051] Preparing an isolation structure and a convex structure on the pixel definition material layer to form a substrate. The isolation structure is located in the first region, and the isolation structure encloses an isolation opening. The convex structure is connected to the isolation structure and is disposed on the side of the isolation structure facing the second region;

[0052] Coating a protective material layer on the substrate, and the protective material layer is disconnected at the isolation opening to form a hollowed-out area;

[0053] Pattern the portion of the pixel definition material layer exposed from the hollowed-out area and the isolation opening to form a pixel definition layer. The pixel definition layer includes pixel defining portions and pixel openings formed by surrounding the pixel defining portions. The pixel defining portions surround at least part of the first electrode, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0054] According to an embodiment of the third aspect of the present application, the material of the protective material layer includes an organic material.

[0055] According to any of the foregoing embodiments of the third aspect of the present application, the material of the protective material layer includes a photoresist.

[0056] The embodiment of the third aspect of the present application further provides a method for manufacturing a display panel. The display panel has a first region and a second region. The manufacturing method includes:

[0057] Prepare a first electrode layer on the substrate. The first electrode layer includes at least two spaced-apart first electrodes;

[0058] Prepare a pixel definition material layer on the first electrode layer;

[0059] Prepare an isolation structure and a plurality of auxiliary structures on the pixel definition material layer to form a substrate. The isolation structure is located in the first region and encloses an isolation opening. The auxiliary structures are located in the second region and are spaced apart from the isolation structure, and adjacent auxiliary structures are spaced apart;

[0060] Coat a protective material layer on the substrate. The protective material layer is disconnected at the isolation opening to form a hollowed-out area;

[0061] Pattern the portion of the pixel definition material layer exposed from the hollowed-out area and the isolation opening to form a pixel definition layer. The pixel definition layer includes pixel defining portions and pixel openings formed by surrounding the pixel defining portions. The pixel defining portions surround at least part of the first electrode, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0062] According to an embodiment of the third aspect of the present application, the material of the protective material layer includes an organic material.

[0063] According to any of the foregoing embodiments of the third aspect of the present application, the material of the protective material layer includes a photoresist.

[0064] In a display panel provided by an embodiment of the present application, the display panel has an adjacent first region and a second region. The display panel includes a substrate, an isolation structure, an auxiliary structure, and a light-emitting layer. The isolation structure is disposed on one side of the substrate and located in the first region. The isolation structure encloses an isolation opening, and the isolation structure can be used to divide sub-pixels of the display panel. The light-emitting layer includes a light-emitting unit disposed in the isolation opening, so that the display panel in the first region can be used for light-emitting display.

[0065] By disposing the auxiliary structure in the second region, when etching and preparing the isolation structure, the etching material in the second region can also etch the material of the auxiliary structure, so that the auxiliary structure can limit the transfer of the etching material in the second region towards the isolation structure, thereby better reducing the etching amount of the etching material on the material of the isolation structure, making the isolation structure not easily over-etched and damaged, and better improving the structural stability of the display panel. Moreover, by setting the adjacent auxiliary structures at intervals, during the preparation process of the display panel, when forming a new material on the auxiliary structure, for example, when coating the material along a certain direction on the auxiliary structure, the gas between the material and the auxiliary structure or the gas between the material and the substrate can be discharged outward from the edge of the auxiliary structure under the guidance of the interval between the adjacent auxiliary structures, making it not easy to generate bubbles in the display panel, thereby better improving the structural stability of the display panel and further better improving the process reliability of the display panel. Description of the Drawings

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0067] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0068] Figure 2 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0069] Figure 3 is a partial schematic diagram of a display panel provided by an embodiment of the present application;

[0070] Figure 4 is a partially enlarged schematic diagram of the orthographic projection of an isolation structure and an auxiliary structure on a substrate provided by an embodiment of the present application;

[0071] Figure 5 is a partial cross-sectional view of a display panel provided by another embodiment of the present application;

[0072] Figure 6 It is a partial schematic diagram of a display panel provided by another embodiment of the present application;

[0073] Figure 7 It is a partially enlarged schematic diagram of the orthographic projection of an isolation structure, a convex structure and an auxiliary structure on a substrate provided by an embodiment of the present application

[0074] Figure 8 It is a partial cross-sectional view of a display panel provided by still another embodiment of the present application;

[0075] Figures 9 to 13 It is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0076] Figure 14 It is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0077] Figure 15 It is a schematic flow chart of a method for manufacturing a display panel provided by another embodiment of the present application.

[0078] Explanation of reference numerals:

[0079] 10, display panel; 10a, functional hole; 11, pixel defining material layer; 12, protective material layer; 12a, hollowed-out area;

[0080] 100, substrate; 110, substrate; 120, first insulating layer; 130, second insulating layer; 140, third insulating layer; 150, transistor; 151, gate; 152, source-drain electrode; 160, storage capacitor; 161, first electrode plate; 162, second electrode plate;

[0081] 200, first electrode layer; 210, first electrode;

[0082] 300, pixel defining layer; 310, pixel defining part; 320, pixel opening;

[0083] 400, isolation structure; 400a, isolation opening; 410, first isolation part; 420, second isolation part;

[0084] 500, convex structure; 510, first part; 520, second part;

[0085] 600, auxiliary structure; 610, first auxiliary part; 620, second auxiliary part;

[0086] 700, light-emitting layer; 710, light-emitting unit;

[0087] 800, second electrode layer; 810, second electrode;

[0088] A1, the first region;

[0089] A2, the second region;

[0090] B1, the first edge;

[0091] B2, the second edge;

[0092] B3, the third edge;

[0093] B4, the fourth edge;

[0094] B5, the fifth edge;

[0095] X - the first direction;

[0096] Y - the second direction. Detailed implementation manners

[0097] The features and exemplary embodiments of each aspect of the present application will be described in detail below. To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present application by showing examples of the present application.

[0098] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "including..." do not exclude the presence of additional identical elements in the process, method, article or device including the elements.

[0099] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "above" or "over" another layer or another region, it may mean directly above the other layer or another region, or there may be other layers or regions between it and the other layer or another region. And if the component is flipped, this layer or region will be "below" or "beneath" the other layer or another region.

[0100] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. The following will describe each embodiment of the display panel, the display device, and the method for manufacturing a display panel with reference to the accompanying drawings.

[0101] Figure 1 FIG. 4 is a schematic structural diagram of a display panel 10 provided by an embodiment of the present application. Figure 2 FIG. 5 is a partial cross-sectional view of a display panel 10 provided by an embodiment of the present application. Figure 3 FIG. 6 is a partial schematic view of a display panel 10 provided by an embodiment of the present application. Figure 4 FIG. 7 is a partially enlarged schematic view of the orthographic projection of an isolation structure 400 and an auxiliary structure 600 on a substrate 100 provided by an embodiment of the present application. In the figure, the X direction is the first direction, and the Y direction is the second direction. The first direction X may intersect the second direction Y. For example, the first direction X may be perpendicular to the second direction Y. Optionally, the first direction X may be the length direction of the display panel 10, and the second direction Y may be the width direction of the display panel 10.

[0102] As Figures 1 to 4 shown, an embodiment of the first aspect of the present application provides a display panel 10 having adjacent first region A1 and second region A2. The display panel 10 includes: a substrate 100; an isolation structure 400 disposed on one side of the substrate 100 and located in the first region A1, the isolation structure 400 enclosing an isolation opening 400a; a plurality of auxiliary structures 600 located in the second region A2 and disposed on the side of the substrate 100 facing the isolation structure 400, the auxiliary structures 600 being spaced apart from the isolation structure 400, and adjacent auxiliary structures 600 being spaced apart; and a light-emitting layer 700 including a light-emitting unit 710 disposed in the isolation opening 400a.

[0103] In a display panel 10 provided by an embodiment of the present application, the display panel 10 has adjacent first region A1 and second region A2. The display panel 10 includes a substrate 100, an isolation structure 400, an auxiliary structure 600, and a light-emitting layer 700. The isolation structure 400 is disposed on one side of the substrate 100 and located in the first region A1, the isolation structure 400 enclosing an isolation opening 400a, and the isolation structure 400 can be used to divide the sub-pixels of the display panel 10. The light-emitting layer 700 includes a light-emitting unit 710 disposed in the isolation opening 400a, so that the display panel 10 in the first region A1 can be used for light-emitting display.

[0104] By disposing the auxiliary structure 600 within the second region A2, when etching and preparing the isolation structure 400, the etching material within the second region A2 can also etch the material of the auxiliary structure 600, such that the auxiliary structure 600 can limit the transfer of the etching material within the second region A2 towards the isolation structure 400. Thus, it is possible to preferably reduce the etching amount of the etching material on the material of the isolation structure 400, such that the isolation structure 400 is not easily over-etched and damaged, and the structural stability of the display panel 10 can be preferably improved. Moreover, by disposing the adjacent auxiliary structures 600 at intervals, during the preparation process of the display panel 10, when forming a new material on the auxiliary structure 600, for example, when coating the material along a certain direction on the auxiliary structure 600, the gas between the material and the auxiliary structure 600 or the gas between the material and the substrate 100 can be discharged outwards from the edge of the auxiliary structure 600 under the guidance of the interval between the adjacent auxiliary structures 600, such that bubbles are not easily generated in the display panel 10. Thus, the structural stability of the display panel 10 can be preferably improved, and further the process reliability of the display panel 10 can be preferably improved.

[0105] In some embodiments of the present application, at least a part of the first region A1 of the display panel 10 can be used as the display area of the display panel 10, that is, at least a part of the first region A1 of the display panel 10 can perform light-emitting display. The second region A2 of the display panel 10 can be used as the non-display area of the display panel 10. For example, the second region A2 of the display panel 10 can be used as the functional area of the display panel 10, and the light transmittance of the second region A2 can be greater than that of the first region A1. When the display panel 10 is applied to a display device, the photosensitive component for sensing light in the display device can be correspondingly disposed under the second region A2, and the photosensitive component can preferably sense light through the second region A2. Among them, the photosensitive component can include at least one of components capable of sensing light, such as a distance sensor, a camera, an in-screen fingerprint recognition module, an infrared light emitting diode (IR-LED) proximity sensor, etc. Moreover, for example, the second region A2 can be used as the border area of the display panel 10.

[0106] For the convenience of description, the following embodiments will be described by taking the second region A2 as the functional area of the display panel 10 as an example. Optionally, the display panel 10 is provided with a functional hole 10a in the second region A2, so that when a photosensitive component is correspondingly disposed at the second region A2, the photosensitive component can preferably sense light through the functional hole 10a.

[0107] Optionally, the isolation structure 400 can be disposed to surround at least a part of the second region A2, such that the isolation structure 400 is not easily affected by the light transmittance of the second region A2.

[0108] Optionally, there are multiple auxiliary structures 600, and the multiple auxiliary structures 600 are spaced apart from each other and arranged around at least part of the second area A2. For example, the multiple auxiliary structures 600 are arranged around at least part of the functional hole 10a, so that the auxiliary structures 600 can be better distributed on the side of the isolation structure 400 facing the second area A2, so as to better limit the etching material with a higher concentration in the second area A2 from flowing toward the isolation structure 400, thereby better reducing the amount of etching of the isolation structure 400 by the etching material, so that the isolation structure 400 is not easily damaged by over-etching.

[0109] like Figure 2 As shown, in some embodiments of the present application, the substrate 100 includes a substrate 110 and a transistor 150 disposed on a side of the substrate 110 facing the first electrode layer 200. The transistor 150 includes a gate 151 and a source and drain 152. Optionally, the substrate 100 may further include a storage capacitor 160. Exemplarily, the storage capacitor 160 may include a first plate 161 and a second plate 162 located on a side of the first plate 161 facing away from the substrate 110.

[0110] As an example, the substrate 100 may further include a first insulating layer 120, a second insulating layer 130, and a third insulating layer 140, which are located on a side of the substrate 110 facing the transistor 150 and are sequentially stacked on the substrate 110. The gate 151 and the first electrode 161 may be provided on the same layer. For example, the gate 151 and the first electrode 161 may be located on a side of the first insulating layer 120 facing the substrate 110. The second electrode 162 may be located between the first insulating layer 120 and the second insulating layer 130, and the source and drain electrodes 152 may be located between the second insulating layer 130 and the third insulating layer 140.

[0111] Optionally, the display panel 10 may further include a first electrode layer 200 . The first electrode layer 200 may include a first electrode 210 disposed on a side of the light emitting layer 700 facing the substrate 100 .

[0112] Optionally, the display panel 10 may further include a second electrode layer 800 . The second electrode layer 800 may include a second electrode 810 disposed on a side of the light emitting layer 700 facing away from the substrate 100 .

[0113] Optionally, the light-emitting unit 710 may include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting structure, an electron injection layer (EIL), and an electron transport layer (ETL).

[0114] In these alternative embodiments, the first electrode layer 200 and the second electrode layer 800 can serve as the pixel electrode layer of the display panel 10. One of the first electrode 210 and the second electrode 810 can serve as the anode, and the other can serve as the cathode to drive the light-emitting unit 710 to emit light. In the embodiments of the present application, an example is given with the first electrode 210 as the anode of the display panel 10 and the second electrode 810 as the cathode of the display panel 10.

[0115] Optionally, the isolation structure 400 can be in a mesh shape. Among them, the hollowed-out area in the mesh-shaped isolation structure 400 can form an isolation opening 400a.

[0116] In some embodiments of the present application, the isolation structure 400 can be used to partition the materials of the light-emitting layer 700 during the preparation of the light-emitting layer 700 to achieve the division of sub-pixels. Among them, there are various ways to set the shape of the isolation structure 400, and the shape of the isolation structure 400 can be any shape that can block and partition the materials of the light-emitting layer 700 in the adjacent isolation openings 400a.

[0117] In some alternative embodiments, the isolation structure 400 can include a first isolation portion 410 and a second isolation portion 420 located on the side of the first isolation portion 410 facing away from the substrate 100. The second isolation portion 420 protrudes from the first isolation portion 410 toward the isolation opening 400a.

[0118] By setting the second isolation portion 420 to protrude from the first isolation portion 410 toward the isolation opening 400a, when depositing the light-emitting layer 700 of the display panel 10, the second isolation portion 420 can block at least part of the materials used to prepare the light-emitting layer 700 to partition the light-emitting layer 700 between adjacent sub-pixels, and can facilitate the formation of a plurality of light-emitting units 710 arranged at intervals. As a result, when depositing the light-emitting layer 700 of the display panel 10, there is no need to set a mask with high precision. For example, when depositing the light-emitting layer 700, there is no need to set a Fine Metal Mask (FMM), thereby being able to better reduce the production and manufacturing cost of the display panel 10.

[0119] Optionally, the material of the isolation structure 400 can include a conductive material. For example, the material of the first isolation portion 410 can include a conductive material, so that the second electrodes 810 in the adjacent isolation openings 400a can be connected to each other through the isolation structure 400 to form a surface electrode, which is convenient for controlling the second electrode 810 in the display panel 10.

[0120] Optionally, the second isolation portion 420 can also protrude from the first isolation portion 410 toward the second region A2. For example, the second isolation portion 420 on the isolation structure 400 located between adjacent protrusion structures 500 can also protrude from the first isolation portion 410 toward the second region A2.

[0121] In some alternative embodiments, the shape of the auxiliary structure 600 may be approximately the same as that of the isolation structure 400. For example, the auxiliary structure 600 includes a first auxiliary portion 610 and a second auxiliary portion 620 located on the side of the first auxiliary portion 610 away from the substrate 100. The second auxiliary portion 620 protrudes from the first auxiliary portion 610. For example, the orthographic projection of the first auxiliary portion 610 on the substrate 100 is located within the orthographic projection of the second auxiliary portion 620 on the substrate 100. When etching the material of the isolation structure 400 with an etching material, the etching material can also etch the auxiliary structure 600. While reducing the etching amount of the etching material on the material of the isolation structure 400, it can also etch out the shape in which the second auxiliary portion 620 of the auxiliary structure 600 protrudes from the first auxiliary portion 610.

[0122] Optionally, the first auxiliary portion 610 may be provided with the same layer and the same material as the first isolation portion 410, and / or the second auxiliary portion 620 may be provided with the same layer and the same material as the second isolation portion 420, so that the auxiliary structure 600 can be prepared in the same manufacturing process as the isolation structure 400 to improve the manufacturing efficiency of the display panel 10.

[0123] Optionally, there is a first difference between the orthographic projection area of the second isolation portion 420 on the substrate 100 and the orthographic projection area of the first isolation portion 410 on the substrate 100, and there is a second difference between the orthographic projection area of the second auxiliary portion 620 on the substrate 100 and the orthographic projection area of the first auxiliary portion 610 on the substrate 100, and the first difference may be less than the second difference.

[0124] Among them, the first difference may represent the degree to which the second isolation part 420 protrudes relative to the first isolation part 410. That is, the first difference may also represent the amount of inward shrinkage of the first isolation part 410 relative to the second isolation part 420. When the first difference is larger, it can be considered that the etching amount of the etching material on the first isolation part 410 is larger when preparing the isolation structure 400. When the first difference is smaller, it can be considered that the etching amount of the etching material on the first isolation part 410 is smaller when preparing the isolation structure 400. Similarly, the second difference may represent the degree to which the second auxiliary part 620 protrudes relative to the first auxiliary part 610. That is, the second difference may also represent the amount of inward shrinkage of the first auxiliary part 610 relative to the second auxiliary part 620. When the second difference is larger, it can be considered that the etching amount of the etching material on the first auxiliary part 610 is larger when preparing the auxiliary structure 600. When the second difference is smaller, it can be considered that the etching amount of the etching material on the first auxiliary part 610 is smaller when preparing the auxiliary structure 600. Since the second region A2 often has fewer structures to reduce the light shielding to ensure the light transmittance, therefore, when preparing the isolation structure 400 and the auxiliary structure 600, the concentration of the etching material in the second region A2 is often greater than the concentration of the etching material in the first region A1, so that compared with the isolation structure 400 located in the first region A1, the etching amount of the etching material on the auxiliary structure 600 located in the second region A2 is greater. Therefore, it is easy to cause the amount of inward shrinkage of the first auxiliary part 610 relative to the second auxiliary part 620 to be greater than the amount of inward shrinkage of the first isolation part 410 relative to the second isolation part 420, that is, it is easy to cause the first difference to be smaller than the second difference. Therefore, the setting of the auxiliary structure 600 can preferably limit the flow of the etching material with a high concentration in the second region A2 to the isolation structure 400, thereby being able to preferably reduce the etching amount of the etching material on the material of the isolation structure 400, so that the isolation structure 400 is not easily over-etched and damaged.

[0125] Figure 5 is a partial cross-sectional view of a display panel 10 provided by another embodiment of the present application. Figure 6 is a partial schematic diagram of a display panel 10 provided by another embodiment of the present application. Figure 7 is a partial enlarged schematic diagram of the orthographic projection of an isolation structure 400, a convex structure 500, and an auxiliary structure 600 on a substrate 100 provided by an embodiment of the present application.

[0126] As Figures 5 to 7 shown, in some alternative embodiments, the display panel 10 further includes a convex structure 500. The convex structure 500 is connected to the isolation structure 400 and is disposed on one side of the isolation structure 400 facing the second region A2. The auxiliary structure 600 is disposed at an interval from the convex structure 500.

[0127] Optionally, the convex structure 500 may also be disposed in the first region A1.

[0128] In these alternative embodiments, by connecting the convex structure 500 to the isolation structure 400 and disposing it on the side of the isolation structure 400 facing the second region A2, that is, by providing a convex structure 500 protruding towards the second region A2 at the edge portion of the isolation structure 400, when etching the isolation structure 400, the etching material can also etch the material of the convex structure 500, thereby being able to better reduce the etching amount of the etching material on the material of the isolation structure 400, making it less likely for the isolation structure 400 to be over-etched and damaged, and being able to better improve the structural stability of the display panel 10.

[0129] Moreover, during the preparation process of the display panel 10, when forming a new material on the isolation structure 400, for example, when forming an organic material on the isolation structure 400, the convex structure 500 protruding relative to the isolation structure 400 can improve the exhaust path during material formation. When the material is coated on the isolation structure 400 in a certain direction, under the extrusion force of the coated material, the gas between the material and the edge of the isolation structure 400 facing the second region A2, between the material and the convex structure 500, and / or between the material and the substrate 100 can be discharged outward from the edge of the convex structure 500 under the guidance of the convex structure 500, making it less likely for bubbles to be generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10.

[0130] In some alternative embodiments, the convex structure 500 may include a first portion 510, and the first portion 510 is integrally formed with the first isolation portion 410, and / or the convex structure 500 may include a second portion 520, and the second portion 520 is integrally formed with the second isolation portion 420, such that at least part of the convex structure 500 can be prepared in the same manufacturing process as the isolation structure 400 to improve the manufacturing efficiency of the display panel 10.

[0131] Optionally, the shape of the convex structure 500 may be approximately the same as the shape of the isolation structure 400. For example, the convex structure 500 may include a first portion 510 and a second portion 520, and the second portion 520 may protrude towards the second region A2 relative to the first portion 510. Among them, when etching the material of the isolation structure 400 with an etching material, the etching material can also etch the convex structure 500. While being able to reduce the etching amount of the etching material on the material of the isolation structure 400, it can also etch out the shape where the second portion 520 of the convex structure 500 protrudes towards the second region A2 relative to the first portion 510.

[0132] Such as Figure 3 and Figure 4As shown, in these alternative embodiments, by providing a protruding structure 500 protruding towards the second region A2 at the edge portion of the isolation structure 400, when etching the material of the isolation structure 400 to form the first isolation portion 410 and the second isolation portion 420, the etching material located at the edge portion of the isolation structure 400 facing the second region A2 can also etch the material of the protruding structure 500. Thus, it is possible to preferably reduce the etching amount of the etching material on the material of the isolation structure 400, so that the isolation structure 400 is not easily over-etched and damaged, and the structural stability of the display panel 10 can be preferably improved.

[0133] Optionally, there is a third difference between the orthographic projection area of the second part 520 on the substrate 100 and the orthographic projection area of the first part 510 on the substrate 100, and the first difference may be smaller than the third difference. Among them, the third difference may represent the degree of protrusion of the second part 520 relative to the first part 510, that is, the third difference may also represent the amount of inward contraction of the first part 510 relative to the second part 520. When the third difference is larger, it can be considered that the etching amount of the etching material on the first part 510 is larger when preparing the protruding structure 500, and when the third difference is smaller, it can be considered that the etching amount of the etching material on the first part 510 is smaller when preparing the protruding structure 500. From the foregoing analysis, it can be seen that when preparing the isolation structure 400, the auxiliary structure 600, and the protruding structure 500, the concentration of the etching material in the second region A2 is often greater than the concentration of the etching material in the first region A1. Therefore, compared with the isolation structure 400 that is relatively far from the second region A2, the protruding structure 500 that is relatively close to the second region A2 is more severely etched by the etching material. Therefore, it is easy to cause the etching amount of the etching material on the first part 510 to be greater than the etching amount of the etching material on the first isolation portion 410, that is, it is easy to cause the amount of inward contraction of the first part 510 relative to the second part 520 to be greater than the amount of inward contraction of the first isolation portion 410 relative to the second isolation portion 420, that is, it is easy to cause the first difference to be smaller than the third difference.

[0134] Figure 8 It is a partial cross-sectional view of a display panel 10 provided by another embodiment of the present application.

[0135] As Figure 8As shown, optionally, when the size of the convex structure 500 is set to be small, the etching material is likely to etch and remove the material of the first part 510 in the convex structure 500, so that the convex structure 500 can only include the second part 520. At this time, since there is no first part 510 under the second part 520, when a new material is formed on the isolation structure 400, for example, when an organic material is formed on the isolation structure 400, the organic material can flow well under the second part 520, so that the gas between the material and the edge of the isolation structure 400 facing the second area A2 and / or between the material and the substrate 100 can be discharged outward under the second part 520, making it not easy to generate bubbles in the display panel 10, thereby being able to better improve the structural stability of the display panel 10.

[0136] Optionally, since the convex structure 500 protrudes relative to the isolation structure 400 towards the second area A2, therefore, the etching material will etch at least two side surfaces of the convex structure 500, and the etching material will etch from at least two side surfaces of the convex structure 500 towards the center of the convex structure 500. Therefore, when the orthographic projection area of the convex structure 500 on the substrate 100 is less than or equal to twice the first difference, the etching material is likely to etch and remove the material of the first part 510 in the convex structure 500, so that the convex structure 500 can only include the second part 520.

[0137] Optionally, the orthographic projection area of the auxiliary structure 600 on the substrate 100 can be larger than the orthographic projection area of the convex structure 500 on the substrate 100, so that the first auxiliary part 610 of the auxiliary structure 600 is not easily etched and removed.

[0138] In some optional embodiments, the number of the convex structures 500 is multiple, and the multiple convex structures 500 are spaced apart from each other and surround at least part of the second area A2. For example, the multiple convex structures 500 are spaced apart from each other and surround at least part of the functional hole 10a.

[0139] Optionally, the convex structure 500 can extend from the isolation structure 400 towards the second area A2. For example, the convex structure 500 can extend from the isolation structure 400 towards the functional hole 10a.

[0140] In these alternative embodiments, by arranging a plurality of protruding structures 500 at intervals around at least part of the second region A2, when a material is coated on the isolation structure 400 in a certain direction, the gas between the material and the isolation structure 400 or the gas between the material and the isolation structure 400 can be discharged outward from the edge of the protruding structure 500 under the guidance of the intervals between adjacent protruding structures 500, so that bubbles are not easily generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10. Moreover, the protruding structures 500 arranged around at least part of the second region A2 can further reduce the etching amount of the etching material on the isolation structure 400, so that the isolation structure 400 is not easily over-etched and damaged, and can better improve the structural stability of the display panel 10.

[0141] In some embodiments of the present application, there are various ways to set the shape of the protruding structure 500, and the shape of the protruding structure 500 can be set in a shape that facilitates the discharge of bubbles when forming a material above the protruding structure 500.

[0142] Such as Figure 6 And Figure 7 As shown, in some alternative embodiments, the orthographic projection of the protruding structure 500 on the substrate 100 may have a first edge B1 and a second edge B2, and the first edge B1 and the second edge B2 may intersect, for example, the first edge B1 and the second edge B2 may be perpendicular to each other.

[0143] In this alternative embodiment, by setting the first edge B1 and the second edge B2 to intersect, when a material is coated above the isolation structure 400 and the protruding structure 500 in a certain direction, for example, when a material is coated above the isolation structure 400 and the protruding structure 500 in any direction of the first direction X, the second direction Y, the circumferential direction of the functional hole 10a, or the radial direction of the functional hole 10a, if one of the first edge B1 and the second edge B2 cannot well conform to the coating direction of the material, then the other of the first edge B1 and the second edge B2 can well conform to the coating direction of the material. For example, when one of the first edge B1 and the second edge B2 is perpendicular to the coating direction of the material, the angle between the other of the first edge B1 and the second edge B2 and the coating direction of the material may be less than 90 degrees, so that when a material is coated above the isolation structure 400 and the protruding structure 500 in a certain direction, under the extrusion force of the coated material, the gas between the material and the edge of the isolation structure 400 facing the second region A2 and / or the gas between the material and the protruding structure 500 can be well discharged outward under the guiding action of at least one of the first edge B1 and the second edge B2, so that bubbles are not easily generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10.

[0144] Optionally, the first edge B1 and the second edge B2 intersect, which may mean that the first edge B1 and the second edge B2 are straight edges and intersect, so as to improve the gas guiding effect of the edge part of the convex structure 500 and facilitate the discharge of gas. Optionally, an arc edge (not shown in the figure) may be connected between the first edge B1 and the second edge B2 for transition.

[0145] In some alternative embodiments, the shape of the projection of the convex structure 500 on the substrate 100 may be approximately polygonal. For example, the shape of the projection of the convex structure 500 on the substrate 100 may be approximately rectangular or triangular, etc. Among them, the convex structure 500 with a projection shape approximately rectangular may have better extension dimensions compared to other shapes, which is convenient for discharging gas. For ease of description, the following embodiments will be described by taking the shape of the projection of the convex structure 500 on the substrate 100 as approximately rectangular as an example.

[0146] Optionally, the first edge B1 may be located on the side of the second edge B2 away from the isolation structure 400, and the second edge B2 is disposed on both sides of the first edge B1.

[0147] In some alternative embodiments, the isolation structure 400 has a third edge B3 on the side of the projection on the substrate 100 facing the second region A2, and the second edge B2 intersects the third edge B3.

[0148] Optionally, the second edge B2 may be connected between the first edge B1 and the third edge B3, and the second edge B2 is perpendicular to the third edge B3.

[0149] Optionally, the intersection of the second edge B2 and the third edge B3 may mean that the second edge B2 and the third edge B3 are straight edges and intersect. Optionally, an arc edge (not shown in the figure) may be connected between the third edge B3 and the second edge B2 for transition.

[0150] In these alternative embodiments, by setting the second edge B2 to intersect with the third edge B3, when a material is coated in a certain direction above the isolation structure 400 and the raised structure 500, and the third edge B3 cannot conform well to the coating direction of the material, the second edge B2 can conform well to the coating direction of the material. For example, when the third edge B3 is perpendicular to the coating direction of the material, the angle between the second edge B2 intersecting with the third edge B3 and the coating direction of the material can be less than 90 degrees. When a material is coated in a certain direction above the isolation structure 400 and the raised structure 500, under the extrusion force of the coated material, the gas between the material and the edge of the isolation structure 400 facing the second region A2 and / or the gas between the material and the raised structure 500 can be better discharged outward under the guiding action of the second edge B2, so that bubbles are not likely to be generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10.

[0151] In some embodiments of the present application, there are various ways to set the shape of the auxiliary structure 600. The shape of the auxiliary structure 600 can be set in a shape that facilitates the discharge of gas when forming a material above the auxiliary structure 600.

[0152] In some alternative embodiments, the orthographic projection of the auxiliary structure 600 on the substrate 100 has a fourth edge B4 and a fifth edge B5. The fourth edge B4 and the fifth edge B5 can be intersectingly arranged. For example, the fourth edge B4 and the fifth edge B5 can be perpendicularly arranged to each other.

[0153] In this alternative embodiment, by setting the fourth edge B4 to intersect with the fifth edge B5, when a material is coated in a certain direction above the auxiliary structure 600. For example, when the material is coated in any direction along the first direction X, the second direction Y, the circumferential direction of the functional hole 10a, or the radial direction of the functional hole 10a above the auxiliary structure 600, if one of the fourth edge B4 and the fifth edge B5 cannot conform well to the coating direction of the material, then the other of the fourth edge B4 and the fifth edge B5 can conform well to the coating direction of the material. For example, when one of the fourth edge B4 and the fifth edge B5 is perpendicular to the coating direction of the material, the other of the fourth edge B4 and the fifth edge B5 can have an angle less than 90 degrees with the coating direction of the material. When a material is coated in a certain direction above the auxiliary structure 600, under the extrusion force of the coated material, the gas between the material and the auxiliary structure can be better discharged outward under the guiding action of at least one of the fourth edge B4 and the fifth edge B5, so that bubbles are not likely to be generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10.

[0154] Optionally, the fourth edge B4 intersects with the fifth edge B5, which may mean that the fourth edge B4 and the fifth edge B5 are straight edges and intersect, so as to improve the guiding effect of the edge part of the auxiliary structure 600 on the gas and facilitate the discharge of the gas. Optionally, an arc edge (not shown in the figure) may be connected between the fourth edge B4 and the fifth edge B5 for transition.

[0155] In some alternative embodiments, the orthographic projection shape of the auxiliary structure 600 on the substrate 100 may be approximately polygonal. For example, the orthographic projection shape of the auxiliary structure 600 on the substrate 100 may be approximately rectangular or triangular, etc. Among them, the auxiliary structure 600 with an orthographic projection shape approximately rectangular may have better extension dimensions compared with other shapes, which is convenient for discharging the gas. For the convenience of description, the following embodiments will be described by taking the orthographic projection shape of the auxiliary structure 600 on the substrate 100 being approximately rectangular as an example.

[0156] Optionally, the auxiliary structure 600 may be arranged to extend in the direction from the isolation structure 400 to the second region A2. For example, the auxiliary structure 600 may be arranged to extend in the direction from the isolation structure 400 to the functional hole 10a, so as to facilitate the discharge of the gas.

[0157] Optionally, the fifth edge B5 may be arranged to intersect with the third edge B3. Optionally, the number of the fourth edge B4 and the fifth edge B5 may be two. The two fourth edges B4 may be spaced apart in the direction from the isolation structure 400 to the second region A2, and the fifth edge B5 may be disposed on both sides of the fourth edge B4.

[0158] In some alternative embodiments, the auxiliary structure 600 may be arranged close to the isolation structure 400. Optionally, when the display panel 10 does not include the convex structure 500, the minimum distance between the auxiliary structure 600 and the isolation structure 400 may be less than or equal to 20 micrometers. For example, the minimum distance between the auxiliary structure 600 and the isolation structure 400 may be less than or equal to 20 micrometers and greater than or equal to 3 micrometers, so that the auxiliary structure 600 can preferably limit the transfer of the etching material in the second region A2 towards the isolation structure 400, thereby being able to preferably reduce the etching amount of the material of the isolation structure 400 by the etching material.

[0159] Optionally, when the display panel 10 includes the convex structure 500, the minimum distance between the auxiliary structure 600 and the convex structure 500 may be less than or equal to 20 micrometers. For example, the minimum distance between the auxiliary structure 600 and the convex structure 500 may be less than or equal to 20 micrometers and greater than or equal to 3 micrometers, so that the auxiliary structure 600 can preferably limit the transfer of the etching material in the second region A2 towards the isolation structure 400 and the convex structure 500, thereby being able to preferably reduce the etching amount of the material of the isolation structure 400 and the convex structure 500 by the etching material.

[0160] As Figure 3 shown in Figure 5 FIG. [FIG. NO.], in some alternative embodiments, the display panel 10 further includes a pixel definition layer 300. The pixel definition layer 300 includes pixel defining portions 310 and a pixel opening 320 formed by enclosing with the pixel defining portions 310. The pixel defining portions 310 surround at least a part of the first electrode 210, and the orthographic projection of the pixel opening 320 on the substrate 100 is located within the orthographic projection of the isolation opening 400a on the substrate 100.

[0161] In this alternative embodiment, insulation between the first electrode 210 and the isolation structure 400 can be achieved through the pixel defining portions 310, so that the second electrode 810 is not easily short-circuited with the first electrode 210 through the isolation structure 400, thereby improving the working stability of the display panel 10.

[0162] In some embodiments of the present application, there are various ways to set the relative positions between the pixel defining portions 310 and the isolation structure 400, between the pixel defining portions 310 and the protrusion structure 500, and between the pixel defining portions 310 and the auxiliary structure 600. For example, as Figure 2 shown in Figure 5 FIG. [FIG. NO.], the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600 can be disposed on the side of the pixel defining portions 310 away from the substrate 100, that is, the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600 can be directly disposed on the pixel defining portions 310. Or for example, the pixel defining portions 310 can be provided with receiving grooves, and at least a part of the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600 can be located in the receiving grooves, so that the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600 are not likely to have too large a height compared with the substrate 100, thereby being able to preferably reduce the thickness of the display panel 10. For ease of description, the following embodiments will be described by taking the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600 being disposed on the side of the pixel defining portions 310 away from the substrate 100 as an example.

[0163] In some embodiments of the present application, during the preparation process of the display panel 10, when forming an organic material on the isolation structure 400, the protrusion structure 500, and the auxiliary structure 600, the provided protrusion structure 500 and the auxiliary structure 600 can preferably discharge the bubbles easily generated during the coating of the organic material.

[0164] Figure 9 and Figure 13 is a schematic flow chart of a method for manufacturing a display panel 10 provided by an embodiment of the present application.

[0165] As Figures 9 to 13 Please note that the [FIG. NO.] in the translation is a placeholder for the actual figure number which should be filled in according to the original patent content. Also,

[0160] - Figures 9 to 13 are likely specific figure or reference numbers in the original patent and should be kept as they are without translation.As shown, for example, the raised structure 500 and the auxiliary structure 600 provided in the present application can preferably discharge the gas at the corresponding position during the photoresist coating, so as to better avoid the generation of bubbles, and can also prevent the photoresist from exploding into particles and flying out due to the subsequent rupture of the bubbles. Specifically, as Figure 9 and Figure 10 shown, during the preparation process of the display panel 10, a whole-surface pixel definition material layer 11 can be prepared on the already formed first electrode 210. The pixel definition material layer 11 can be used to form the pixel definition layer 300, and then as Figure 11 shown, the isolation structure 400, the raised structure 500 and the auxiliary structure 600 can be prepared on the pixel definition material layer 11. Among them, the whole-surface pixel definition material layer 11 covering the first electrode 210 can play a good protective role for the first electrode 210, so that when etching the materials of the isolation structure 400, the raised structure 500 and the auxiliary structure 600, the etching material is not easily damaged to the first electrode 210 under the shielding of the pixel definition material layer 11. As Figure 12 and Figure 13 shown, after the preparation of the isolation structure 400, the raised structure 500 and the auxiliary structure 600 on the pixel definition material layer 11 is completed, the pixel definition material layer 11 can be patterned by a photolithography process to form the pixel definition layer 300. The pixel definition layer 300 includes pixel defining portions 310 and pixel openings 320 surrounded by the pixel defining portions 310. Therefore, when a protective material layer 12 (for example, the protective material layer 12 can include photoresist) is coated on the pixel definition material layer 11, the isolation structure 400, the raised structure 500 and the auxiliary structure 600 in a whole surface along a certain direction during the photolithography process, under the extrusion force of the material of the protective material layer 12, the gas between the material of the protective material layer 12 and the edge of the isolation structure 400 facing the second region A2, the gas between the material of the protective material layer 12 and the raised structure 500, and the gas between the material of the protective material layer 12 and the auxiliary structure 600 can be discharged outward from the edges of the raised structure 500 and the auxiliary structure 600 under the guidance of the raised structure 500 and the auxiliary structure 600, so that bubbles are not easily generated in the display panel 10, thereby being able to preferably improve the structural stability of the display panel 10.

[0166] Please refer to Figures 1 to 13As shown in the figure, an embodiment of the first aspect of the present application further provides a display panel 10. The display panel 10 has adjacent first region A1 and second region A2. The display panel 10 includes: a substrate 100; an isolation structure 400 disposed on one side of the substrate 100 and located in the first region A1, and the isolation structure 400 encloses an isolation opening 400a; a convex structure 500 connected to the isolation structure 400 and disposed on the side of the isolation structure 400 facing the second region A2; and a light-emitting layer 700 including a light-emitting unit 710 disposed in the isolation opening 400a.

[0167] In a display panel 10 further provided in an embodiment of the present application, the display panel 10 has adjacent first region A1 and second region A2. The display panel 10 includes a substrate 100, an isolation structure 400, a convex structure 500, and a light-emitting layer 700. The isolation structure 400 is disposed on one side of the substrate 100 and located in the first region A1. The isolation structure 400 encloses an isolation opening 400a, and the isolation structure 400 can be used to divide sub-pixels of the display panel 10. The light-emitting layer 700 includes a light-emitting unit 710 disposed in the isolation opening 400a, so that the display panel 10 in the first region A1 can be used for light-emitting display. By connecting the convex structure 500 to the isolation structure 400 and disposing it on the side of the isolation structure 400 facing the second region A2, that is, by providing a convex structure 500 protruding towards the second region A2 at the edge portion of the isolation structure 400, when etching the isolation structure 400, the etching material can also etch the material of the convex structure 500, thereby being able to preferably reduce the etching amount of the etching material on the material of the isolation structure 400, making the isolation structure 400 not easily over-etched and damaged, and being able to preferably improve the structural stability of the display panel 10.

[0168] Moreover, during the preparation process of the display panel 10, when forming a new material on the isolation structure 400, for example, when forming an organic material on the isolation structure 400, the convex structure 500 protruding relative to the isolation structure 400 can also improve the exhaust path during material formation. When coating the material in a certain direction on the isolation structure 400, under the extrusion force of the coating material, the gas between the material and the edge of the isolation structure 400 facing the second region A2, between the material and the convex structure 500, and / or between the material and the substrate 100 can be discharged outward from the edge of the convex structure 500 under the guidance of the convex structure 500, so that bubbles are not easily generated in the display panel 10, thereby being able to preferably improve the structural stability of the display panel 10.

[0169] Optionally, the display panel 10 provided in the first aspect of the present application may be the display panel 10 in any of the foregoing embodiments. Therefore, the display panel 10 provided in the embodiments of the present application may have the beneficial effects of the display panel 10 in any of the foregoing embodiments, and the present application will not elaborate on them too much.

[0170] For example, the light-emitting layer 700 may be the light-emitting layer 700 in any of the foregoing embodiments, and the display panel 10 may further include the first electrode layer 200 and the second electrode layer 800 in any of the foregoing embodiments. For example, the isolation structure 400 may be the isolation structure 400 in any of the foregoing embodiments. The isolation structure 400 may include the first isolation portion 410 and the second isolation portion 420 in any of the foregoing embodiments, so that the isolation structure 400 can be used to partition the materials of the light-emitting layer 700 during the preparation of the light-emitting layer 700 to achieve the division of sub-pixels. For example, the convex structure 500 may be the convex structure 500 in any of the foregoing embodiments to improve the gas guiding and discharging ability of the convex structure 500.

[0171] Optionally, in a display panel 10 provided in the embodiments of the present application, the display panel 10 may not include the auxiliary structure 600 in any of the foregoing embodiments, or the display panel 10 may include the auxiliary structure 600 in any of the foregoing embodiments. The present application does not make specific limitations on this. When the display panel 10 includes the auxiliary structure 600 in any of the foregoing embodiments, the auxiliary structure 600 may be disposed on a side of the convex structure 500 facing away from the isolation structure 400 and located in the second region A2.

[0172] The embodiments of the second aspect of the present application provide a display device, and the display device includes the display panel 10 in any of the above embodiments. Since the display device provided in the embodiments of the second aspect of the present application includes the display panel 10 in any of the first aspect embodiments, the display device provided in the embodiments of the second aspect of the present application has the beneficial effects of the display panel 10 in any of the first aspect embodiments, and will not be elaborated here.

[0173] The display device in the embodiments of the present application includes, but is not limited to, devices with a display function such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control devices, smart landline telephones, and consoles.

[0174] Optionally, the light transmittance of the second region A2 may be greater than that of the first region A1. The display device may include a photosensitive component corresponding to the second region A2 for sensing light, and light can be better sensed by the photosensitive component through the second region A2 with a higher light transmittance.

[0175] Optionally, there are multiple ways to set the type of the photosensitive component. For example, the photosensitive component may include at least one of components capable of sensing light, such as a distance sensor, a camera, an in-screen fingerprint recognition module, an infrared light-emitting diode proximity sensor, etc.

[0176] Figure 14 It is a schematic flowchart of a method for manufacturing a display panel 10 provided by an embodiment of the present application.

[0177] An embodiment of the third aspect of the present application provides a method for manufacturing a display panel 10. Please refer to Figures 1 to 13 and refer to Figure 14 As shown, the display panel 10 may be the display panel 10 provided by any of the above first aspect embodiments. The display panel 10 may have a first region A1 and a second region A2. The manufacturing method includes:

[0178] Step S01: As Figure 9 shown, a first electrode layer 200 is formed on a substrate 100. The first electrode layer 200 includes at least two spaced-apart first electrodes 210.

[0179] Step S02: As Figure 10 shown, a pixel defining material layer 11 is formed on the first electrode layer 200.

[0180] Step S03: As Figure 11 shown, an isolation structure 400 and a protrusion structure 500 are formed on the pixel defining material layer 11 to form a substrate. The isolation structure 400 is located in the first region A1. The isolation structure 400 encloses an isolation opening 400a. The protrusion structure 500 is connected to the isolation structure 400 and is disposed on a side of the isolation structure 400 facing the second region A2.

[0181] Optionally, in step S03, it may further include: forming an auxiliary structure 600 on the pixel defining material layer 11. The auxiliary structure 600 may be disposed on a side of the protrusion structure 500 away from the isolation structure 400 and within the second region A2.

[0182] Step S04: As Figure 12 shown, a protective material layer 12 is coated on the substrate. The protective material layer 12 is disconnected at the isolation opening 400a to form a hollowed-out region 12a.

[0183] Among them, the protective material layer 12 can be used to protect the film layer structure below it, so that the film layer structure below the protective material layer 12 is not easily etched by the etching material, while the film layer structure not covered by the protective material layer 12 can be etched by the etching material. For example, the etching material can etch the polarity of the pixel definition material layer 11 exposed from the hollow area 12a formed at the break of the protective material layer 12 through the hollow area 12a. Optionally, the material of the protective material layer 12 includes an organic material. For example, the material of the protective material layer 12 can include photoresist.

[0184] Step S05: As Figure 13 shown, pattern the exposed part of the pixel definition material layer 11 from the hollow area 12a and the isolation opening 400a to form a pixel definition layer 300. The pixel definition layer 300 includes pixel defining portions 310 and pixel openings 320 surrounded by the pixel defining portions 310. The pixel defining portions 310 surround at least part of the first electrode 210, and the orthographic projection of the pixel opening 320 on the substrate 100 is located within the orthographic projection of the isolation opening 400a on the substrate 100.

[0185] In a method for manufacturing a display panel 10 provided in an embodiment of the present application, by placing the step of patterning the pixel definition material layer 11 after manufacturing the isolation structure 400 and the protrusion structure 500, when etching the materials of the isolation structure 400 and the protrusion structure 500, the etching material is not easily damaged to the first electrode 210 under the shielding of the pixel definition material layer 11. Among them, when coating the protective material layer 12 before patterning the pixel definition material layer 11, under the extrusion force of coating the material of the protective material layer 12, the gas between the material of the protective material layer 12 and the edge of the isolation structure 400 facing the second region A2, between the material of the protective material layer 12 and the protrusion structure 500, and / or between the material of the protective material layer 12 and the substrate 100 can be discharged outward from the edge of the protrusion structure 500 under the guidance of the protrusion structure 500, so that bubbles are not easily generated in the display panel 10, thereby better improving the structural stability of the display panel 10.

[0186] Figure 15 is a schematic flowchart of a method for manufacturing a display panel 10 provided in another embodiment of the present application.

[0187] An embodiment of the third aspect of the present application further provides a method for manufacturing a display panel 10. Please combine Figures 1 to 13 and refer to Figure 15 shown. The display panel 10 can be the display panel 10 provided in any of the above first aspect embodiments. The display panel 10 can have a first region A1 and a second region A2. The manufacturing method includes:

[0188] Step S01: AsFigure 9 As shown, a first electrode layer 200 is prepared on a substrate 100, and the first electrode layer 200 includes at least two first electrodes 210 arranged at intervals.

[0189] Step S02: As Figure 10 shown, a pixel definition material layer 11 is prepared on the first electrode layer 200.

[0190] Step S03: As Figure 11 shown, an isolation structure 400 and an auxiliary structure 600 are prepared on the pixel definition material layer 11 to form a substrate. The isolation structure 400 is located in a first region A1, and the isolation structure 400 encloses an isolation opening 400a. The auxiliary structure 600 is located in a second region A2, and the auxiliary structure 600 is arranged at intervals with the isolation structure 400, and adjacent auxiliary structures 600 are arranged at intervals.

[0191] Optionally, in step S03, it may further include: preparing a convex structure 500 on the pixel definition material layer 11, and the convex structure 500 can be connected to the isolation structure 400 and is arranged on a side of the isolation structure 400 facing the second region A2.

[0192] Step S04: As Figure 12 shown, a protective material layer 12 is coated on the substrate, and the protective material layer 12 is disconnected at the isolation opening 400a to form a hollowed-out area 12a.

[0193] Among them, the protective material layer 12 can be used to protect the film layer structure below it, so that the film layer structure below the protective material layer 12 is not easily etched by an etching material, while the film layer structure not covered by the protective material layer 12 can be etched by the etching material. For example, the etching material can etch the pixel definition material layer 11 exposed from the hollowed-out area 12a and the isolation opening 400a through the hollowed-out area 12a formed at the disconnection of the protective material layer 12. Optionally, the material of the protective material layer 12 includes an organic material. For example, the material of the protective material layer 12 can include a photoresist.

[0194] Step S05: As Figure 13 shown, patterning is performed on a part of the pixel definition material layer 11 exposed from the hollowed-out area 12a and the isolation opening 400a to form a pixel definition layer 300. The pixel definition layer 300 includes pixel defining portions 310 and a pixel opening 320 surrounded by the pixel defining portions 310. The pixel defining portions 310 are arranged around at least part of the first electrodes 210, and the positive projection of the pixel opening 320 on the substrate 100 is located within the positive projection of the isolation opening 400a on the substrate 100.

[0195] In a method for manufacturing a display panel 10 provided in an embodiment of the present application, by placing the step of patterning the pixel definition material layer 11 after manufacturing the isolation structure 400 and the auxiliary structure 600, when etching the materials of the isolation structure 400 and the auxiliary structure 600, the etching material is not easily damaged to the first electrode 210 under the shielding of the pixel definition material layer 11. Among them, when coating the protective material layer 12 before patterning the pixel definition material layer 11, under the extrusion force of the material for coating the protective material layer 12, the gas between the material and the auxiliary structure 600 or the gas between the material and the substrate 100 can be discharged outward from the edge of the auxiliary structure 600 under the guidance of the gap between adjacent auxiliary structures 600, so that bubbles are not easily generated in the display panel 10, thereby being able to better improve the structural stability of the display panel 10, and further better improving the process reliability of the display panel 10.

[0196] Regarding related solutions of the isolation structure (also known as the partition structure), in patents (applications) PCT / CN2023 / 134518, CN202310619767.1, CN202310492119.4, CN202311346196.5, CN202310775778.9, etc., their structures, materials, and manufacturing methods are described, and the content is incorporated herein by reference for reference.

[0197] According to the embodiments of the present application as described above, these embodiments do not describe all the details in detail, nor limit the invention to only the specific embodiments. Obviously, according to the above description, many modifications and variations can be made. The present specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and its modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, The display panel has a first area and a second area adjacent to each other, and includes: substrate; an isolation structure, disposed on one side of the substrate and located in the first area, the isolation structure enclosing an isolation opening; a plurality of auxiliary structures located in the second region and arranged on a side of the substrate facing the isolation structure, the auxiliary structures being spaced apart from the isolation structure and adjacent auxiliary structures being spaced apart; The light-emitting layer includes a light-emitting unit arranged in the isolation opening.

2. The display panel according to claim 1, wherein The display panel further includes a protruding structure, the protruding structure being connected to the isolation structure and being arranged on a side of the isolation structure facing the second area, and the auxiliary structure being spaced apart from the protruding structure; Preferably, there are multiple protruding structures, and the multiple protruding structures are spaced apart from each other and arranged around at least a portion of the second area; Preferably, the protruding structure extends from the isolation structure toward the second area.

3. The display panel according to claim 2, wherein The orthographic projection of the protrusion structure on the substrate has a first edge and a second edge, and the first edge and the second edge are arranged to intersect; Preferably, the first edge and the second edge are arranged perpendicular to each other; Preferably, the first edge is located on a side of the second edge away from the isolation structure, and the second edge is provided on both sides of the first edge; Preferably, the isolation structure has a third edge on a side of its orthographic projection on the substrate facing the second region, and the second edge intersects with the third edge; Preferably, the second edge is connected between the first edge and the third edge, and the second edge is perpendicular to the third edge.

4. The display panel according to claim 2, wherein The isolation structure includes a first isolation portion and a second isolation portion located on the side of the first isolation portion facing away from the substrate, the second isolation portion is arranged to protrude from the first isolation portion toward the isolation opening, the protruding structure includes a first branch, the first branch and the first isolation portion are integrally formed, and / or the protruding structure includes a second branch, the second branch and the second isolation portion are integrally formed.

5. The display panel according to claim 4, characterized in that, The raised structure includes only the second section, and there is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and the orthographic projection area of the raised structure on the substrate is less than or equal to twice the first difference.

6. The display panel according to claim 4, wherein The protruding structure includes a first sub-portion and a second sub-portion, wherein the second sub-portion is arranged to protrude from the first sub-portion toward the second area; Preferably, there is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and there is a third difference between the orthographic projection area of the second branch on the substrate and the orthographic projection area of the first branch on the substrate, and the first difference is smaller than the third difference.

7. The display panel according to claim 1, wherein The orthographic projection of the auxiliary structure on the substrate has a fourth edge and a fifth edge, and the fourth edge and the fifth edge are arranged to intersect; Preferably, the fourth edge and the fifth edge are arranged perpendicular to each other; Preferably, the isolation structure has a third edge on a side of its orthographic projection on the substrate facing the second region, and the fifth edge intersects with the third edge.

8. The display panel according to claim 1, wherein The display panel is provided with a functional hole in the second area, and the plurality of auxiliary structures are arranged around at least a portion of the functional hole.

9. The display panel according to claim 1, wherein The auxiliary structure is arranged close to the isolation structure.

10. The display panel according to claim 1, wherein, The isolation structure includes a first isolation portion and a second isolation portion located on a side of the first isolation portion facing away from the substrate, wherein the second isolation portion is arranged to protrude from the first isolation portion toward the isolation opening; Preferably, the auxiliary structure includes a first auxiliary portion and a second auxiliary portion located on a side of the first auxiliary portion facing away from the substrate, the first auxiliary portion and the first isolation portion are provided in the same layer and material, and / or the second auxiliary portion and the second isolation portion are provided in the same layer and material; Preferably, the second auxiliary portion is arranged to protrude from the first auxiliary portion; Preferably, there is a first difference between the orthographic projection area of the second isolation portion on the substrate and the orthographic projection area of the first isolation portion on the substrate, and there is a second difference between the orthographic projection area of the second auxiliary portion on the substrate and the orthographic projection area of the first auxiliary portion on the substrate, and the first difference is smaller than the second difference.

11. The display panel according to any one of claims 1 to 10, characterized in that, The display panel also includes a first electrode layer and a pixel definition layer, the first electrode layer includes a first electrode arranged on the side of the light-emitting layer facing the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel defining portion is arranged around at least a portion of the first electrode, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

12. A display panel, characterized in that, The display panel has a first area and a second area adjacent to each other, and includes: substrate; an isolation structure, disposed on one side of the substrate and located in the first area, the isolation structure enclosing an isolation opening; a protruding structure connected to the isolation structure and disposed on a side of the isolation structure facing the second region; The light-emitting layer includes a light-emitting unit arranged in the isolation opening.

13. The display panel according to claim 12, wherein There are multiple protrusion structures, and the multiple protrusion structures are spaced apart from each other and arranged around at least a portion of the second area; Preferably, the protruding structure extends from the isolation structure toward the second area.

14. The display panel according to claim 12, wherein, The orthographic projection of the protrusion structure on the substrate has a first edge and a second edge, and the first edge and the second edge are arranged to intersect; Preferably, the first edge and the second edge are arranged perpendicular to each other; Preferably, the first edge is located on a side of the second edge away from the isolation structure, and the second edge is provided on both sides of the first edge; Preferably, the isolation structure has a third edge on a side of its orthographic projection on the substrate facing the second region, and the second edge intersects with the third edge; Preferably, the second edge is connected between the first edge and the third edge, and the second edge is perpendicular to the third edge.

15. The display panel according to claim 12, wherein The display panel further includes at least two auxiliary structures disposed on a side of the convex structure facing away from the isolation structure and within the second region, the auxiliary structures being spaced apart from the convex structure, and adjacent auxiliary structures being spaced apart from each other; Preferably, the display panel has a functional hole formed in the second region, and a plurality of the auxiliary structures are disposed around at least a part of the functional hole; Preferably, a fourth edge and a fifth edge are formed in a front projection of the auxiliary structure on the substrate, and the fourth edge and the fifth edge intersect; Preferably, the fourth edge and the fifth edge are perpendicular to each other; Preferably, the auxiliary structure includes a first auxiliary portion and a second auxiliary portion located on a side of the first auxiliary portion facing away from the substrate, and the second auxiliary portion protrudes from the first auxiliary portion; 16. The display panel according to claim 12, wherein The isolation structure includes a first isolation portion and a second isolation portion located on a side of the first isolation portion facing away from the substrate, and the second isolation portion protrudes from the first isolation portion toward the isolation opening; Preferably, the convex structure includes a first sub-portion integrally formed with the first isolation portion, and / or the convex structure includes a second sub-portion integrally formed with the second isolation portion; Preferably, the convex structure only includes the second sub-portion, and there is a first difference between a front projection area of the second isolation portion on the substrate and a front projection area of the first isolation portion on the substrate, and a front projection area of the convex structure on the substrate is less than or equal to twice the first difference; Preferably, the convex structure includes the first sub-portion and the second sub-portion, and the second sub-portion protrudes from the first sub-portion toward the second region; Preferably, there is a first difference between a front projection area of the second isolation portion on the substrate and a front projection area of the first isolation portion on the substrate, and there is a third difference between a front projection area of the second sub-portion on the substrate and a front projection area of the first sub-portion on the substrate, and the first difference is less than the third difference; 17. The display panel according to any one of claims 12 to 16, characterized in that, The display panel further includes a first electrode layer and a pixel definition layer. The first electrode layer includes a first electrode disposed on a side of the light-emitting layer facing the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by surrounding the pixel defining portion. The pixel defining portion surrounds at least a part of the first electrode, and a front projection of the pixel opening on the substrate is located within a front projection of the isolation opening on the substrate.

18. A display device, characterized in that, Including the display panel according to any one of claims 1 to 17.

19. A method for preparing a display panel, characterized in that, The display panel has a first region and a second region, and the manufacturing method includes: Preparing a first electrode layer on a substrate, the first electrode layer including at least two spaced-apart first electrodes; Preparing a pixel definition material layer on the first electrode layer; An isolation structure and a convex structure are prepared on the pixel definition material layer to form a substrate. The isolation structure is located in the first region, and the isolation structure encloses an isolation opening. The convex structure is connected to the isolation structure and is disposed on a side of the isolation structure facing the second region; A protective material layer is coated on the substrate, and the protective material layer is disconnected at the isolation opening to form a hollowed-out region; The part of the pixel definition material layer exposed from the hollowed-out region and the isolation opening is patterned to form a pixel definition layer. The pixel definition layer includes pixel defining portions and a pixel opening formed by enclosing the pixel defining portions. The pixel defining portions surround at least part of the first electrode, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate; Preferably, the material of the protective material layer includes an organic material; Preferably, the material of the protective material layer includes a photoresist.

20. A method for preparing a display panel, characterized in that, The display panel has a first region and a second region, and the manufacturing method includes: A first electrode layer is prepared on the substrate, and the first electrode layer includes at least two spaced-apart first electrodes; A pixel definition material layer is prepared on the first electrode layer; An isolation structure and a plurality of auxiliary structures are prepared on the pixel definition material layer to form a substrate. The isolation structure is located in the first region, and the isolation structure encloses an isolation opening. The auxiliary structures are located in the second region, and the auxiliary structures are spaced apart from the isolation structure, and adjacent auxiliary structures are spaced apart; A protective material layer is coated on the substrate, and the protective material layer is disconnected at the isolation opening to form a hollowed-out region; The part of the pixel definition material layer exposed from the hollowed-out region and the isolation opening is patterned to form a pixel definition layer. The pixel definition layer includes pixel defining portions and a pixel opening formed by enclosing the pixel defining portions. The pixel defining portions surround at least part of the first electrode, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate; Preferably, the material of the protective material layer includes an organic material; Preferably, the material of the protective material layer includes a photoresist.

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