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 comprises an array substrate, a pixel definition layer and a light emitting layer. The pixel defining part of the pixel defining layer is enclosed to form a pixel opening. The reflection part is arranged in the pixel limiting part, so that the reflection part and the light-emitting unit are arranged at intervals in an insulated mode, the reflection part is prevented from influencing the micro-cavity structure of the light-emitting unit, and the display effect of the display panel is guaranteed. At least part of the pixel limiting parts comprise light-transmitting materials, so that light rays can penetrate through the pixel limiting parts to reach the reflecting parts and are reflected to the light-emitting surface of the display panel through the reflecting parts, more light rays can be emitted from the light-emitting surface of the display panel, and the light rays can be more gathered in the direction perpendicular to the array substrate after being reflected by the reflecting parts. The effect of improving the lighting effect of the display panel is achieved, and therefore the display effect and the use performance of the display panel are improved.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202311628569.8, filed on November 30, 2023, entitled “Display Panel, Display Device, and Method for Preparing Display Panel,” and the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of display, and in particular to a display panel, a display device and a method for manufacturing a display panel. Background Art

[0004] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0005] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0006] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, aiming to improve the performance of the display panel.

[0007] A first aspect of the present application provides a display panel, comprising: an array substrate; a pixel definition layer located on the array substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening formed by the pixel defining portion; a light-emitting layer located on a side of the pixel definition layer away from the array substrate, the light-emitting layer comprising a light-emitting unit located at the pixel opening; wherein a reflective portion is provided in the pixel defining portion, the reflective portion being used to gather light emitted by the light-emitting unit in a direction perpendicular to the array substrate, and the material of at least a portion of the pixel defining portion comprises a light-transmitting material.

[0008] According to an implementation of the first aspect of the present application, the material of at least a portion of the pixel defining portion located on a side of the reflective portion away from the array substrate includes a light-transmitting material.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the pixel defining portion includes a first defining portion and a second defining portion, the first defining portion is located on the side of the reflecting portion facing the array substrate, the second defining portion is located on the side of the reflecting portion facing away from the array substrate, the second defining portion at least partially covers the surface of the reflecting portion exposed by the first defining portion, and the material of the second defining portion includes a light-transmitting material.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the first defining portion and the second defining portion are interconnected to wrap the reflecting portion.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the reflecting portion includes a curved portion or the reflecting portion includes at least one protrusion protruding toward the light emitting surface of the display panel.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the protrusion includes one or more of a curved surface or a folded surface.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: an isolation structure located on the array substrate, the isolation structure encloses a plurality of isolation openings, and at least some of the pixel openings are connected to at least some of the isolation openings.

[0014] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure is located on a side of the reflective portion that is away from the array substrate.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure and the reflective portion are arranged on the same layer.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, at least a portion of the reflecting portion is located in the isolation opening and is in contact with the isolation structure.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the isolation structure on the array substrate is located within the orthographic projection of the reflective portion on the array substrate.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the materials of the isolation structure and the reflection part both include conductive materials, and the isolation structure is electrically connected to the reflection part.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the array substrate includes a signal line, the signal line and the reflective portion are connected via a via, and / or the signal line and the isolation structure are connected via a via.

[0020] According to any of the aforementioned implementations of the first aspect of the present application, the reflective portion includes a top surface and a side surface extending from the top surface toward the array substrate.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, in a direction along the top surface toward the array substrate, the side surface is inclined toward the pixel opening.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the side surface includes one or more of a plane surface, a curved surface, a folded surface or a stepped surface.

[0023] According to any of the aforementioned implementations of the first aspect of the present application, the array substrate includes a conductive layer, and the material of the reflective portion is the same as the material of the conductive layer.

[0024] According to any of the foregoing embodiments of the first aspect of the present application, the materials of the reflective portion and the conductive layer both include single-layer conductive materials.

[0025] According to any of the foregoing embodiments of the first aspect of the present application, the material of the reflective portion includes a metallic material.

[0026] According to any of the foregoing embodiments of the first aspect of the present application, the pixel electrode and the reflective portion are spaced apart and insulated from each other.

[0027] According to any of the foregoing embodiments of the first aspect of the present application, the display panel further includes: a first electrode layer disposed in the isolation opening and on a side of the light-emitting unit facing away from the array substrate, the first electrode layer including a plurality of first electrodes, and the first electrodes being electrically connected to the isolation structure.

[0028] According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure includes a first layer and a second layer on a side of the first layer facing away from the array substrate, and a positive projection of the first layer on the array substrate is located within a positive projection of the second layer on the array substrate.

[0029] According to any of the foregoing embodiments of the first aspect of the present application, the second layer includes a conductive material or an insulating material.

[0030] According to any of the foregoing embodiments of the first aspect of the present application, the second layer includes a metallic material, and the materials of the first layer and the second layer are different.

[0031] According to any of the foregoing embodiments of the first aspect of the present application, a positive projection of the second layer on the array substrate is located within a positive projection of the reflective portion on the array substrate.

[0032] According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure further includes a third layer on a side of the first layer facing the array substrate, and a positive projection of the first layer on the array substrate is located within a positive projection of the third layer on the array substrate.

[0033] According to any of the foregoing embodiments of the first aspect of the present application, the display panel further includes a second electrode, at least a part of the second electrode being exposed through the pixel opening, and the material of the reflective portion being the same as the material of the second electrode.

[0034] According to any of the foregoing embodiments of the first aspect of the present application, the second electrode and the reflective portion are spaced apart and insulated from each other.

[0035] An embodiment of the second aspect of the present application provides a display device, which includes the display panel of any of the foregoing embodiments.

[0036] An embodiment of the third aspect of the present application provides a method for manufacturing a display panel, including:

[0037] Preparing a first pixel defining material layer on the array substrate;

[0038] A reflective material layer is prepared on a side of the first pixel defining material layer facing away from the array substrate, and the reflective material layer is patterned to obtain a reflective portion;

[0039] A second pixel defining material layer is prepared on a side of the reflective portion facing away from the array substrate, and the second pixel defining material layer and the first pixel defining material layer are patterned to obtain a pixel defining portion and a pixel opening formed by enclosing the pixel defining portion;

[0040] An emitting layer is prepared on a side of the pixel defining portion facing away from the array substrate, and the emitting layer includes an emitting unit located in the pixel opening;

[0041] Wherein, the reflective portion is located within the pixel defining portion, the reflective portion is configured to converge the light emitted by the emitting unit in a direction perpendicular to the array substrate, and at least a part of the material of the pixel defining portion includes a light-transmitting material.

[0042] According to an embodiment of the third aspect of the present application, after the step of preparing the first pixel defining material layer on the array substrate, the method further includes:

[0043] The first pixel defining material layer is patterned to obtain a first defining portion and a sacrificial portion located between two adjacent first defining portions, and the first defining portion and the sacrificial portion enclose a virtual pixel opening;

[0044] In the step of preparing the second pixel defining material layer on a side of the reflective portion facing away from the array substrate and patterning the second pixel defining material layer and the first pixel defining material layer, the method includes:

[0045] The portion of the second pixel defining material layer in the virtual pixel opening and the sacrificial portion are etched to form a pixel defining layer having a pixel opening.

[0046] According to any one of the foregoing embodiments of the third aspect of the present application, after the step of preparing the reflective material layer on a side of the first pixel defining material layer facing away from the array substrate, the method further includes:

[0047] An isolation structure is prepared on a side of the reflective material layer facing away from the array substrate, the isolation structure encloses a plurality of isolation openings, and at least a part of the pixel openings communicate with at least a part of the isolation openings;

[0048] Alternatively, after the step of preparing the second pixel defining material layer on a side of the reflective portion facing away from the array substrate, the method further includes:

[0049] An isolation structure is prepared on a side of the second pixel defining material layer facing away from the array substrate, the isolation structure encloses a plurality of isolation openings, and at least a part of the pixel openings communicate with at least a part of the isolation openings.

[0050] A display panel according to an embodiment of the present application includes an array substrate, a pixel definition layer, and a light-emitting layer. The pixel defining portion of the pixel definition layer encloses a pixel opening to set a light-emitting unit and achieve normal light emission of the light-emitting unit. And the pixel defining portion defines the setting area of each light-emitting unit, reducing the color mixing defect between each light-emitting unit. The reflecting portion is disposed within the pixel defining portion, such that the reflecting portion and the light-emitting unit are spaced apart and insulated, avoiding the influence of the reflecting portion on the microcavity structure of the light-emitting unit and ensuring the display effect of the display panel. At least a part of the pixel defining portion includes a light-transmitting material, enabling light to pass through the pixel defining portion to reach the reflecting portion and be reflected by the reflecting portion to the light-emitting surface of the display panel. More light can be emitted from the light-emitting surface of the display panel, and after being reflected by the reflecting portion, the light can be more concentrated in the direction perpendicular to the array substrate, so as to achieve the effect of improving the forward light efficiency of the display panel, thereby improving the display effect and service performance of the display panel. Description of the Drawings

[0051] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to actual scale.

[0052] Figure 1 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0053] Figure 2 is a partial cross-sectional view of a display panel in another embodiment;

[0054] Figure 3 is a partial cross-sectional view of a display panel in yet another embodiment;

[0055] Figure 4 is a partial schematic view of a display panel provided by an embodiment of the present application;

[0056] Figure 5 is a partial cross-sectional view of a display panel in still another embodiment;

[0057] Figure 6 is a partial cross-sectional view of a display panel in still another embodiment;

[0058] Figure 7 is a partial schematic view of a display panel in another embodiment;

[0059] Figure 8 is a partial cross-sectional view of a display panel in still another embodiment;

[0060] Figure 9 is a partial cross-sectional view of a display panel in still another embodiment;

[0061] Figure 10It is a partial cross-sectional view of a display panel in yet another embodiment;

[0062] Figure 11 It is a partial cross-sectional view of a display panel in yet another embodiment;

[0063] Figure 12 It is a partial cross-sectional view of a display panel in yet another embodiment;

[0064] Figure 13 It is a partial cross-sectional view of a display panel in yet another embodiment;

[0065] Figure 14 It is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0066] Figures 15 to 19 It is a schematic diagram of the manufacturing process of a display panel provided by an embodiment of the present application.

[0067] Explanation of reference numerals:

[0068] 10. Display panel;

[0069] 100. Array substrate; 110. Signal line; 120. Conductive layer;

[0070] 200. Pixel definition layer; 210. Pixel defining part; 211. First defining part; 212. Second defining part; 213. Sacrificial part; 220. Pixel opening; 230. Second electrode;

[0071] 300. Isolation structure; 310. First layer; 320. Second layer; 330. Third layer; 340. Isolation opening;

[0072] 400. Reflection part; 401. Protrusion; 410. Top surface; 420. Side surface;

[0073] 500. Light-emitting layer; 510. Light-emitting unit;

[0074] 600. First electrode layer; 610. First electrode. Detailed implementation manners

[0075] The features and exemplary embodiments of various aspects of the present application will be described in detail below. For the purpose of making the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to 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.

[0076] 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 terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0077] 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.

[0078] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. The embodiments of the display panel, the display device, and the method for manufacturing a display panel will be described below with reference to the accompanying drawings.

[0079] Embodiments of the present application provide a display panel, which may be an Organic Light Emitting Diode (OLED) display panel.

[0080] Please refer to Figure 1 , Figure 1 which is a partial cross-sectional view of a display panel provided by an embodiment of the present application.

[0081] As Figure 1 shown, an embodiment of the first aspect of the present application provides a display panel 10, which includes an array substrate 100, a pixel definition layer 200, and a light-emitting layer 500; the pixel definition layer 200 is located on the array substrate 100, and the pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 formed by enclosing the pixel defining portion 210; the light-emitting layer 500 includes a light-emitting unit 510 located in the pixel opening 220; wherein, a reflection portion 400 is disposed in the pixel defining portion 210, and the reflection portion 400 is used to converge the light emitted by the light-emitting unit 510 in a direction perpendicular to the array substrate 100, and at least part of the material of the pixel defining portion 210 includes a light-transmitting material.

[0082] According to the display panel 10 of an embodiment of the present application, the display panel 10 includes an array substrate 100, a pixel definition layer 200, and a light-emitting layer 500. The pixel defining portion 210 of the pixel definition layer 200 encloses to form a pixel opening 220 for arranging a light-emitting unit 510 to realize the normal light emission of the light-emitting unit 510. And the pixel defining portion 210 defines the setting area of each light-emitting unit 510 to reduce the color mixing defect between the light-emitting units 510. The reflecting portion 400 is disposed in the pixel defining portion 210 such that the reflecting portion 400 is spaced apart and insulated from the light-emitting unit 510, avoiding the influence of the reflecting portion 400 on the microcavity structure of the light-emitting unit 510 and ensuring the display effect of the display panel 10. At least a part of the pixel defining portion 210 includes a light-transmitting material, so that light can pass through the pixel defining portion 210 to reach the reflecting portion 400 and be reflected by the reflecting portion 400 to the light-emitting surface of the display panel 10. More light can be emitted from the light-emitting surface of the display panel 10, and the light can be more concentrated in the direction perpendicular to the array substrate 100 after being reflected by the reflecting portion 400, so as to achieve the effect of improving the forward light efficiency of the display panel 10, thereby improving the display effect and service performance of the display panel 10. For example, when the light emitted by the light-emitting unit 510 has an excessive angle and reaches the surface of the reflecting portion 400, the reflecting portion 400 can reflect part of the light emitted by the light-emitting unit 510 to the front of the display panel 10 to improve the forward light efficiency of the display panel 10, or when ambient light reaches the reflecting portion 400, the reflecting portion 400 can reflect part of the ambient light to the light-emitting surface of the display panel 10 to improve the display effect of the display panel 10.

[0083] The light can be more concentrated in the direction perpendicular to the array substrate 100 after being reflected by the reflecting portion 400, which means that the light can be emitted in the direction perpendicular to the array substrate 100 and in the direction close to the perpendicular to the array substrate 100 after being reflected by the reflecting portion 400.

[0084] Optionally, the material of at least a part of the pixel defining portion 210 on the side of the reflecting portion 400 facing away from the array substrate 100 includes a light-transmitting material, so that light can pass through the pixel defining portion 210 to reach the reflecting portion 400 and be reflected by the reflecting portion 400 to the light-emitting surface of the display panel 10. More light can be emitted from the light-emitting surface of the display panel 10, and the light can be more concentrated in the direction perpendicular to the array substrate 100 after being reflected by the reflecting portion 400, so as to achieve the effect of improving the forward light efficiency of the display panel 10, thereby improving the display effect and service performance of the display panel 10. Please refer to Figure 2 , Figure 2 is a partial cross-sectional view of the display panel in another embodiment.

[0085] As Figure 2As shown, in some alternative embodiments, the pixel defining portion 210 includes a first defining portion 211 and a second defining portion 212. The first defining portion 211 is located on the side of the reflecting portion 400 facing the array substrate 100, and the second defining portion 212 is located on the side of the reflecting portion 400 away from the array substrate 100. The second defining portion 212 at least partially covers the surface of the reflecting portion 400 exposed by the first defining portion 211, and the material of the second defining portion 212 includes a light-transmitting material. In the embodiments of the present application, the surface of the reflecting portion 400 exposed by the first defining portion 211 may be the upper surface and the side surface of the reflecting portion 400.

[0086] In the embodiments of the application, the reflecting portion 400 is spaced apart and insulated from the light-emitting unit 510, so that it is difficult for the reflecting portion to contact the light-emitting unit 510 and affect the microcavity structure of the light-emitting unit 510, ensuring the display effect of the display panel 10.

[0087] In these alternative embodiments, the second defining portion 212 located on the side of the reflecting portion 400 away from the array substrate 100 includes a light-transmitting material, so that light can pass through the second defining portion 212 to reach the reflecting portion 400, and the reflecting portion 400 makes the light converge in a direction perpendicular to the array substrate 100 to improve the display effect of the display panel 10. Optionally, the material of the first defining portion 211 includes an opaque material, reducing the mutual crosstalk of light between adjacent light-emitting units 410, further improving the display effect, and the opaque first defining portion 211 can reduce the light entering the array substrate 100 to reduce the influence on the devices in the array substrate 100 and ensure the device stability of the array substrate 100.

[0088] Optionally, the first defining portion 211 and the second defining portion 212 are connected to each other to wrap the reflecting portion 400. After the reflecting portion 400 is wrapped by the first defining portion 211 and the second defining portion 212, it is difficult for the reflecting portion 400 to contact the light-emitting unit 510, so as to avoid the reflecting portion 400 contacting the light-emitting unit 510 and affecting the microcavity structure of the light-emitting unit 510, ensuring the display effect of the display panel 10. The reflecting portion 400 is wrapped by the first defining portion 211 and the second defining portion 212, and it is difficult for water and oxygen to contact the reflecting portion 400 to corrode the reflecting portion 400, improving the service life of the reflecting portion 400.

[0089] Please refer to Figure 3 , Figure 3 which is a partial cross-sectional view of the display panel in another embodiment.

[0090] As Figure 3 shown, optionally, the reflecting portion 400 includes a curved surface portion or the reflecting portion 400 includes at least one protrusion 401 protruding toward the light-emitting surface of the display panel 10, so that part of the light can be reflected by the reflecting portion 400 to the front of the display panel 10 after reaching the reflecting portion 400, improving the front light efficiency of the display panel 10.

[0091] Please refer to Figure 3 and Figure 4 as well, Figure 4 which is a partial schematic view of a display panel provided by an embodiment of the present application.

[0092] As shown in Figure 3 and Figure 4 , optionally, the protrusion 401 includes one or more of a curved surface or a folded surface. The protrusion 401 of the curved surface or the folded surface can increase the surface area of the reflection part 400, so that more light can reach the reflection part 400 and be reflected by the reflection part 400 to the light-emitting surface of the display panel 10, improving the display effect of the display panel 10.

[0093] In some optional embodiments, the display panel 10 further includes an isolation structure 300. The isolation structure 300 is located on the substrate 100. The isolation structure 300 encloses a plurality of isolation openings 340, and the pixel opening 220 communicates with the isolation openings 340.

[0094] In these optional embodiments, the isolation structure 300 encloses a plurality of isolation openings 340, and the pixel opening 220 communicates with the isolation openings 340, so that the pixel opening 220 is exposed by the isolation openings 340, that is, the influence of the isolation part on the light emission of the light-emitting unit 510 can be reduced, ensuring the display effect of the display panel 10. In other embodiments, the isolation structure 300 and the pixel defining part 210 jointly enclose the pixel opening 220. Please continue to refer to Figure 3 , optionally, the isolation structure 300 is located on the side of the pixel defining part 210 away from the array substrate 10. The isolation structure 300 is prepared after the pixel defining part 210 is prepared, and the isolation structure 300 does not contact the reflection part 400. Please refer to Figure 5 as well, Figure 5 which is a partial cross-sectional view of the display panel in another embodiment.

[0095] As shown in Figure 11 , in some optional embodiments, the display panel 10 further includes a first electrode layer 600; the first electrode layer 600 is disposed in the isolation opening 340 and on the side of the light-emitting unit 510 away from the array substrate 100. The first electrode layer 600 includes a plurality of first electrodes 610, and the first electrodes 610 are electrically connected to the isolation structure 300.

[0096] In these optional embodiments, the isolation structure 300 is disposed on the array substrate 100 and encloses a plurality of isolation openings 340 to isolate the common layer in the light-emitting layer 500 to avoid the cross-color problem caused by lateral leakage, and the light-emitting unit 510 does not need to use a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. Further, the first electrode layer 600 is isolated to form mutually spaced first electrodes 610, and each first electrode 610 can be electrically connected to each other through the isolation structure 300 to form a full-surface electrode.

[0097] like Figure 5 As shown, optionally, the isolation structure 300 is located on the side of the reflective portion 400 away from the array substrate 100. In the embodiment of the present application, the isolation structure 300 is in contact with the reflective portion 400. The isolation structure 300 is in contact with the reflective portion 400, which makes it easier to achieve electrical connection between the isolation structure 300 and the reflective portion 400, so that the isolation structure 300 can better connect the driving signal through the reflective portion 400. In other embodiments, the isolation structure 300 is located on the side of the pixel defining portion 210 away from the array substrate 100, that is, the isolation structure 300 is not in direct contact with the reflective portion 400.

[0098] Optional, please continue to see Figure 5 , at least part of the second defining portion 212 is located on a side of the isolation structure 300 away from the array substrate 100 .

[0099] like Figure 6 As shown, optionally, the isolation structure 300 is arranged in the same layer as the reflective portion 400. For example, at least part of the reflective portion 400 is located in the isolation opening 340 and is in contact with the isolation structure 300. The isolation structure 300 is in lateral contact and electrical connection with the reflective portion 400. The reflective portion 400 has a large area, which facilitates the reflective portion 400 to be connected to the drive signal of the array substrate 100, so that the isolation structure 300 can better connect the drive signal through the reflective portion 400. When the isolation structure 300 is connected to the first electrode 610, the signal transmission to the first electrode 610 is realized. Moreover, the reflective portion 400 and the isolation structure 300 are electrically connected, which can reduce the impedance and reduce the power consumption of the display panel 10.

[0100] Optionally, the orthographic projection of the isolation structure 300 on the array substrate 10 is located within the orthographic projection of the reflective portion 400 on the array substrate 10, so that the reflective portion 400 is not completely blocked by the isolation structure 300, and light can reach the unblocked part of the reflective portion 400 and be reflected by the reflective portion 400 to the light emitting surface of the display panel 10.

[0101] like Figure 5 As shown, in some optional embodiments, the reflective portion 400 includes a top surface 410 and a side surface 420 extending from the top surface 410 toward the array substrate 100 .

[0102] In these alternative embodiments, the reflecting portion 400 has a top surface 410 and a side surface 420, which can increase the distribution area of the reflecting portion 400, so that the reflecting portion 400 can receive more light and reflect more light to the light-emitting surface of the display panel 10, further improving the display effect of the display panel 10.

[0103] Optionally, in the direction from the top surface 410 towards the array substrate 100, the side surface 420 is inclined towards the pixel opening 220. The side surface 420 being inclined towards the pixel opening 220 can increase the effective light-receiving area of the reflecting portion 400, that is, more light can reach the side surface 420 of the reflecting portion 400 and be reflected by the reflecting portion 400 to the light-emitting surface of the display panel 10, further improving the display effect of the display panel 10. Specifically, the top surface 410 is disposed on the top surface of the first defining portion 211, and the side surface 420 covers the side wall of the first defining portion 211.

[0104] Please refer to Figure 5 and Figure 7 , Figure 7 which is a partial schematic view of a display panel in another embodiment.

[0105] As Figure 5 and Figure 7 shown, optionally, the side surface 420 includes one or more of a flat surface, a curved surface, a folded surface or a stepped surface. The curved surface, the folded surface or the stepped surface can increase the light-receiving area of the side surface 420, so that more light can reach the side surface 420 of the reflecting portion 400 and be reflected by the side surface 420 to the light-emitting surface of the display panel 10, improving the display effect of the display panel 10.

[0106] In some alternative embodiments, the materials of the isolation structure 300 and the reflecting portion 400 both include conductive materials, and the isolation structure 300 and the reflecting portion 400 are electrically connected. In these alternative embodiments, the isolation structure 300 is electrically connected to the reflecting portion 400, and the reflecting portion 400 has a relatively large area, which is convenient for the reflecting portion 400 to be connected to the driving signal of the array substrate 100. Thus, the isolation structure 300 can better connect to the driving signal through the reflecting portion 400. After the isolation structure 300 is connected to the first electrode 610, signal supply to the first electrode 610 is achieved. Moreover, the reflecting portion 400 and the isolation structure 300 being electrically connected can reduce the impedance and decrease the power consumption of the display panel 10. When the isolation structure 300 is a three-layer structure, the reflecting portion 400 can also be reused as the structure of the lowermost layer of the isolation structure 300, thereby reducing the manufacturing process of the display panel 10.

[0107] Please refer to Figure 8 and Figure 9 , Figure 8 which is a partial cross-sectional view of a display panel in yet another embodiment;Figure 9 It is a partial cross-sectional view of a display panel in still another embodiment.

[0108] In some alternative embodiments, such as Figure 8 shown, the array substrate 100 includes signal lines 110, and the signal lines 110 are via-connected to the reflection portion 400, and / or, as Figure 9 shown, the signal lines 110 are via-connected to the isolation structure 300.

[0109] In these alternative embodiments, the signal lines 110 are via-connected to the reflection portion 400 or the isolation structure 300, and can provide driving signals to the reflection portion 400 or the isolation structure 300 to achieve the normal function of the first electrode. When the signal lines 110 are via-connected to the reflection portion 400, the area of the reflection portion 400 is relatively large, which is convenient for the connection between the reflection portion 400 and the signal lines 110, and the contact area between the reflection portion 400 and the signal lines 110 is relatively large, which can reduce the contact resistance to improve the transmission effect of the driving signal.

[0110] Optionally, the signal lines 110 include driving signal lines for providing driving signals to the isolation structure 300.

[0111] In some alternative embodiments, the isolation structure 300 is located on the side of the second defining portion 212 away from the array substrate 100.

[0112] In these alternative embodiments, the isolation structure 300 is disposed on the second defining portion 212, and the isolation structure 300 has a relatively large height difference with respect to the pixel opening 220. When preparing the light-emitting layer 500, due to the relatively large height difference, the light-emitting layer 500 is more likely to be disconnected at the position of the isolation structure 300, reducing the preparation difficulty of the light-emitting layer 500. At this time, the isolation structure 300 and the reflection portion 400 are spaced apart, so that the reflection portion 400 is completely wrapped by the pixel defining portion 210, making it difficult for water and oxygen to contact the reflection portion 400 and improving the service life of the reflection portion 400.

[0113] Please refer to Figure 10 , Figure 10 It is a partial cross-sectional view of a display panel in still another embodiment.

[0114] As Figure 10 shown, in some alternative embodiments, the array substrate 100 further includes a conductive layer 120, and the material of the reflection portion 400 is the same as that of the conductive layer 120.

[0115] In these alternative embodiments, when the material of the reflective portion 400 is the same as that of the conductive layer 120, the reflective portion 400 can be prepared by the same process as that for preparing the conductive layer 120, which can simplify the preparation process and reduce the preparation cost. For example, the conductive layer 120 includes a power supply voltage signal line, a reference voltage signal line, a data signal line, or the like.

[0116] In some alternative embodiments, the materials of both the reflective portion 400 and the conductive layer 120 include a single-layer conductive material.

[0117] In these alternative embodiments, when the reflective portion 400 includes a single-layer conductive material, the preparation process is relatively simple and the material cost is low. Moreover, the reflective portion 400 made of a single-layer conductive material has a good reflection effect, which can achieve the effect of improving the light efficiency, thereby improving the display effect and service performance of the display panel 10.

[0118] Optionally, the materials of both the reflective portion 400 and the conductive layer 120 include multiple sub-conductive layers, such as a three-layer metal composite material of Ti / Al / Ti (titanium / aluminum / titanium) or Ti / Al / Mo (titanium / aluminum / molybdenum).

[0119] Optionally, the material of the reflective portion 400 includes a metal material. For example, the material of the reflective portion 400 includes silver (Ag), molybdenum (Mo), aluminum (Al), etc. The interface of the reflective portion 400 made of a metal material has a good reflection effect, which can achieve the effect of improving the light efficiency, thereby improving the display effect and service performance of the display panel 10.

[0120] In some alternative embodiments, the isolation structure 300 includes a first layer 310 and a second layer 320 located on the side of the first layer 310 away from the array substrate 100. The orthographic projection of the first layer 310 on the array substrate 100 is located within the orthographic projection of the second layer 320 on the array substrate 100.

[0121] In these alternative embodiments, the first layer 310 and the second layer 320 are arranged to form the isolation structure 300. The orthographic projection of the first layer 310 close to the array substrate 100 on the array substrate 100 is located within the orthographic projection of the second layer 320 on the array substrate 100. The second layer 320 covers the surface of the first layer 310 close to the second layer 320. At this time, the first layer 310 is recessed relative to the second layer 320 in a direction away from the isolation opening 340. When preparing the light-emitting layer 500, a large drop occurs at the edge of the isolation structure 300, and the first layer 310 is concave relative to the second layer 320. It is difficult for the light-emitting layer 500 to connect at the edge of the isolation structure 300, resulting in breakage.

[0122] In some alternative embodiments, the second layer 320 includes a conductive material or an insulating material.

[0123] In these alternative embodiments, the second layer 320 includes a conductive material. For example, the second layer 320 includes a non-metallic conductive material or a metallic conductive material. When the second layer 320 is a non-metallic conductive material or an insulating material, during the wet etching process of the first layer 310 using an etching solution, the second layer 320 is difficult to be etched, so that the first layer 310 can be more easily recessed with respect to the second layer 320.

[0124] In some alternative embodiments, the second layer 320 includes a metallic material, and the materials of the first layer 310 and the second layer 320 are different.

[0125] In these alternative embodiments, when both the first layer 310 and the second layer 320 are metallic materials, an etching solution can be used to wet-etch the first layer 310. By setting the etching solution, the etching rate of the second layer 320 can be made less than that of the first layer 310. Since the etching rate of the first layer 310 is relatively large, when wet-etching with the etching solution, even though the second layer 320 will be etched to some extent, the first layer 310 is etched faster, so that the first layer 310 is recessed with respect to the second layer 320.

[0126] In some alternative embodiments, the orthographic projection of the second layer 320 on the array substrate 100 is located within the orthographic projection of the reflection portion 400 on the array substrate 100.

[0127] In these alternative embodiments, the orthographic projection of the second layer 320 on the array substrate 100 is located within the orthographic projection of the reflection portion 400 on the array substrate 100, that is, there is a part of the reflection portion 400 not blocked by the second layer 320, so that light can reach the surface of the reflection portion 400 and be reflected by the reflection portion 400 to the light-emitting surface of the display panel 10, thereby improving the display effect of the display panel 10.

[0128] Please refer to Figure 12 , Figure 12 which is a partial cross-sectional view of the display panel in still another embodiment.

[0129] As Figure 12 shown, in some alternative embodiments, the isolation structure 300 further includes a third layer 330 on the side of the first layer 310 facing the array substrate 100, and the orthographic projection of the first layer 310 on the array substrate 100 is located within the orthographic projection of the third layer 330 on the array substrate 100.

[0130] In these alternative embodiments, in order to obtain the first layer 310 with an inward concave setting, during the etching process, the first layer 310 has a faster etching rate relative to the second layer 320 and the third layer 330, thereby forming the inward concave first layer 310. Since the etching rate of the first layer 310 is relatively fast, more etching waste is likely to enter other positions of the display panel 10, causing adverse effects. After the third layer 330 is provided, the first layer 310 can be better attached to the third layer 330, and the generated etching waste falls on the third layer 330, facilitating cleaning.

[0131] Optionally, the material of the second layer 320 is titanium (Ti), the material of the first layer 310 is aluminum (Al), and the material of the third layer 330 is titanium (Ti) or molybdenum (Mo), that is, the isolation structure 300 is a three-layer metal composite material of Ti / Al / Ti (titanium / aluminum / titanium) or Ti / Al / Mo (titanium / aluminum / molybdenum).

[0132] In some alternative embodiments, the display panel 10 further includes a second electrode 230, and at least a part of the second electrode 230 is exposed by the pixel opening 220. The material of the reflection portion 400 is the same as the material of the second electrode 230.

[0133] In these alternative embodiments, when the material of the reflection portion 400 is the same as the material of the second electrode 230, the reflection portion 400 can be prepared by the same process method as the preparation process of the second electrode 230, which can simplify the preparation process and reduce the preparation cost.

[0134] Optionally, the second electrode 230 and the reflection portion 400 are spaced apart and insulated to prevent the second electrode 230 from coming into contact with the reflection portion 400 and causing a short circuit, ensuring the normal function of the second electrode 230.

[0135] Optionally, one of the second electrode 230 and the first electrode 610 serves as the anode of the light-emitting unit 510, and the other serves as the cathode of the light-emitting unit 510. In the embodiments of the present application, it is exemplified that the second electrode 230 serves as the anode of the light-emitting unit 510 and the first electrode 610 serves as the cathode of the light-emitting unit 510.

[0136] Optionally, the light-emitting layer 500 may further include common layers such as an electron injection layer (EIL), an electron transport layer (ETL), a light-emitting material layer, a hole injection layer (HIL), and a hole transport layer (HTL).

[0137] In some alternative embodiments, the display panel 10 further includes a packaging layer on the side of the light-emitting layer 500 facing away from the array substrate 100. Further, the packaging layer may be a TFE packaging layer.

[0138] Please refer to Figure 13 , Figure 13It is a partial cross-sectional view of a display panel in yet another embodiment.

[0139] As Figure 13 shown, optionally, the material of at least a part of the pixel defining portion 210 located on the side of the reflection portion 400 close to the array substrate 100 includes a light-transmitting material. When the display panel 10 is a bottom-emitting display panel, that is, the light-emitting unit 510 emits light toward the side of the array substrate 100. When the bottom stray light passes through the pixel defining portion 210 on the side of the reflection portion 400 close to the array substrate 100 and reaches the reflection portion, the light is reflected by the reflection portion 400 to the side of the array substrate 100, improving the bottom-emitting effect of the display panel 10.

[0140] When the display panel 10 is a bottom-emitting display panel, at this time, in addition to the Figure 13 shape design shown, the shape design can also be extended with reference to the above-mentioned shape design, and no further elaboration will be made here. Similarly, the design of the positional relationship and electrical connection between the reflection portion 400 and the isolation structure 300 can also be referred to the above, and no elaboration will be made here.

[0141] Optionally, the second electrode 230 includes a light-transmitting conductive material, and the second electrode 230 is light-transmitting, so that the light emitted by the light-emitting unit 510 can pass through the second electrode 230 to reach the array substrate 100 to realize the light-emitting display of the display panel 10.

[0142] For the structural design in this embodiment, it can be applied to other display panels 10, and specific selection can be made according to actual situations, and the present application does not specifically limit it.

[0143] An embodiment of the second aspect of the present application further provides a display device, including the display panel 10 in any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 in any of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 in any of the above-mentioned first aspect embodiments, which will not be elaborated here.

[0144] The display device in the embodiments of the present application includes, but is not limited to, devices with display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control devices, smart landline phones, consoles, etc.

[0145] Please refer to Figures 14 to 19 , Figure 14 which is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application; Figures 15 to 19 which is a schematic diagram of a manufacturing process of a display panel provided by an embodiment of the present application.

[0146] An embodiment of the third aspect of the present application further provides a method for manufacturing a display panel 10. The display panel 10 may be the display panel 10 provided in any of the above first aspect embodiments. Please refer to Figures 1 to 13 simultaneously, and the manufacturing method includes:

[0147] Step S01: Prepare a first pixel definition material layer on the array substrate. In some optional embodiments, the first pixel definition material layer may be provided with openings.

[0148] Step S02: Prepare a reflective material layer on the side of the first pixel definition material layer away from the array substrate, and perform patterning on the reflective material layer to obtain a reflective portion.

[0149] Step S03: Prepare a second pixel definition material layer on the side of the reflective portion away from the array substrate, and perform patterning on the second pixel definition material layer and the first pixel definition material layer to obtain a pixel defining portion and a pixel opening formed by enclosing the pixel defining portion.

[0150] Step S04: Prepare a light-emitting layer on the side of the pixel defining portion away from the array substrate. The light-emitting layer includes a light-emitting unit located in the pixel opening; wherein, the reflective portion is located within the pixel defining portion, and the reflective portion is used to converge the light emitted by the light-emitting unit in a direction perpendicular to the array substrate, and at least part of the material of the pixel defining portion includes a light-transmitting material.

[0151] According to the manufacturing method of the third aspect embodiment of the present application, as Figure 15 shown, the first pixel definition material layer is prepared through Step S01. As Figure 16 shown, the reflective portion 400 is prepared through Step S02. As Figure 19As shown, the pixel definition layer 200 is prepared through step S03. The pixel defining portion 210 of the pixel definition layer 200 encloses to form a pixel opening 220 to set the light-emitting unit 510 and achieve the normal light emission of the light-emitting unit 510. Moreover, the pixel defining portion 210 defines the setting areas of the light-emitting units 510, reducing the color mixing defect between the light-emitting units 510. The light-emitting layer is prepared through step S04. The reflecting portion 400 is disposed within the pixel defining portion 210 such that the reflecting portion 400 is spaced apart and insulated from the light-emitting unit 510, avoiding the influence of the reflecting portion 400 on the microcavity structure of the light-emitting unit 510 and ensuring the display effect of the display panel 10. At least a part of the pixel defining portion 210 on the side of the reflecting portion 400 away from the array substrate 100 includes a light-transmitting material, enabling light to pass through the pixel defining portion 210 to reach the reflecting portion 400 and be reflected by the reflecting portion 400 to the light-emitting surface of the display panel 10. More light can be emitted from the light-emitting surface of the display panel 10, and the light can be more concentrated in the direction perpendicular to the array substrate 100 after being reflected by the reflecting portion 400, so as to achieve the effect of improving the forward light efficiency of the display panel 10, thereby improving the display effect and service performance of the display panel 10.

[0152] Optionally, after step S02, the method further includes:

[0153] An isolation structure 300 is prepared on the side of the second pixel definition material layer away from the array substrate 100. The isolation structure 300 encloses to form a plurality of isolation openings 340, and at least a part of the pixel openings 220 communicate with at least a part of the isolation openings 340.

[0154] In these alternative embodiments, the isolation structure 300 is located on the side of the pixel defining portion 210 away from the array substrate 100.

[0155] As Figure 17 shown, optionally, step S02 further includes:

[0156] An isolation structure 300 is prepared on the side of the reflective material layer away from the array substrate 100. The isolation structure 300 encloses to form a plurality of isolation openings 340. The pixel opening 220 communicates with the isolation opening 340, and the reflective material layer is patterned to obtain the reflecting portion.

[0157] In these alternative embodiments, the isolation structure 300 encloses to form a plurality of isolation openings 340, and the pixel opening 220 communicates with the isolation opening 340, such that the pixel opening 220 is exposed by the isolation opening 340, that is, the influence of the isolation portion on the light emission of the light-emitting unit 510 can be reduced, ensuring the display effect of the display panel 10.

[0158] Optionally, after step S02, the method further includes:

[0159] A spacer structure 300 is fabricated on a side of the reflection portion 400 facing away from the array substrate 100.

[0160] In these alternative embodiments, the patterning of the reflective material layer can be performed either after the fabrication of the spacer structure 300 or before the fabrication of the spacer structure 300.

[0161] In some alternative embodiments, as Figure 15 shown, after step S01, the method includes:

[0162] Patterning the first pixel definition material layer to obtain first defining portions 211 and a sacrificial portion 213 located between two adjacent first defining portions 211, and the first defining portions 211 and the sacrificial portion 213 enclose a virtual pixel opening;

[0163] In step S04, as Figure 18 and Figure 19 shown, the method includes:

[0164] Etching the second pixel definition material layer in the portion of the virtual pixel opening and the sacrificial portion 213 to form a pixel definition layer 200 having a pixel opening 220.

[0165] In these alternative embodiments, after patterning the first pixel definition material layer, the first defining portions 211 and the sacrificial portion 213 are obtained, and the sacrificial portion 213 can cover the second electrode 230, so that the second electrode 230 is not exposed, reducing damage to the second electrode 230 in subsequent etching processes and improving the reliability of the second electrode 230.

[0166] In accordance with the embodiments of the present application as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the above description. 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 comprises: An array substrate; A pixel definition layer, located on the array substrate, the pixel definition layer comprising a pixel definition portion and a pixel opening formed by the pixel definition portion; A light-emitting layer, located on a side of the pixel definition layer away from the array substrate, the light-emitting layer comprising a light-emitting unit located at the pixel opening; A reflective portion is disposed in the pixel defining portion, and the reflective portion is used to gather the light emitted by the light emitting unit toward a direction perpendicular to the array substrate, and at least part of the material of the pixel defining portion includes a light-transmitting material.

2. The display panel according to claim 1, characterized in that: The material of at least a portion of the pixel defining portion located on a side of the reflective portion away from the array substrate includes a light-transmitting material; Preferably, the pixel defining portion comprises a first defining portion and a second defining portion, the first defining portion is located on a side of the reflective portion facing the array substrate, the second defining portion is located on a side of the reflective portion facing away from the array substrate, the second defining portion at least partially covers a surface of the reflective portion exposed by the first defining portion, and the material of the second defining portion comprises a light-transmitting material; Preferably, the first limiting portion and the second limiting portion are connected to each other to wrap the reflecting portion; Preferably, the reflecting portion includes a curved surface portion or the reflecting portion includes at least one protrusion protruding toward the light emitting surface of the display panel; Preferably, the protrusion includes one or more of a curved surface or a folded surface.

3. The display panel according to claim 1, characterized in that: The display panel further includes: An isolation structure, located on the array substrate, wherein the isolation structure encloses a plurality of isolation openings, and at least some of the pixel openings are connected to at least some of the isolation openings; Preferably, the isolation structure is located on a side of the reflective portion away from the array substrate; Preferably, the isolation structure and the reflective portion are arranged in the same layer; Preferably, at least part of the reflective portion is located in the isolation opening and is in contact with and connected to the isolation structure; Preferably, the orthographic projection of the isolation structure on the array substrate is located within the orthographic projection of the reflection portion on the array substrate; Preferably, the materials of the isolation structure and the reflection part both include conductive materials, and the isolation structure is electrically connected to the reflection part; Preferably, the array substrate comprises a signal line, the signal line is connected to the reflective portion through a via hole, and / or the signal line is connected to the isolation structure through a via hole.

4. The display panel according to any one of claims 1 to 3, characterized in that: The reflecting portion includes a top surface and a side surface extending from the top surface toward the array substrate; Preferably, in a direction along the top surface toward the array substrate, the side surface is arranged to be inclined toward the pixel opening; Preferably, the side surface includes one or more of a plane surface, a curved surface, a folded surface or a stepped surface.

5. The display panel according to claim 1, characterized in that: The array substrate comprises a conductive layer, and the material of the reflective portion is the same as that of the conductive layer; Preferably, the materials of the reflective portion and the conductive layer both include a single layer of conductive material; Preferably, the material of the reflective part includes metal material.

6. The display panel according to claim 3, characterized in that: The display panel further includes: A first electrode layer, disposed in the isolation opening and located at a side of the light-emitting unit away from the array substrate, the first electrode layer comprising a plurality of first electrodes, and the first electrodes are electrically connected to the isolation structure; Preferably, the isolation structure comprises a first layer and a second layer located on a side of the first layer away from the array substrate, the orthographic projection of the first layer on the array substrate is located within the orthographic projection of the second layer on the array substrate, and the first electrode is electrically connected to the first layer; Preferably, the second layer comprises a conductive material or an insulating material; Preferably, the second layer comprises a metal material, and the first layer and the second layer are made of different materials; Preferably, the orthographic projection of the second layer on the array substrate is located within the orthographic projection of the reflective portion on the array substrate; Preferably, the isolation structure further includes a third layer located on a side of the first layer facing the array substrate, and an orthographic projection of the first layer on the array substrate is located within an orthographic projection of the third layer on the array substrate.

7. The display panel according to claim 1, characterized in that: The display panel further includes a second electrode, at least a portion of the second electrode is exposed by the pixel opening, and a material of the reflective portion is the same as a material of the second electrode; Preferably, the second electrode is insulated from the reflecting portion.

8. A display device, characterized in that: A display panel comprising any one of claims 1 to 7.

9. A method for preparing a display panel, characterized in that: include: Preparing a first pixel definition material layer on the array substrate; Preparing a reflective material layer on a side of the first pixel definition material layer away from the array substrate, and patterning the reflective material layer to obtain a reflective portion; Preparing a second pixel definition material layer on a side of the reflective portion away from the array substrate, and patterning the second pixel definition material layer and the first pixel definition material layer to obtain a pixel definition portion and a pixel opening surrounded by the pixel definition portion; A light-emitting layer is prepared on a side of the pixel defining portion away from the array substrate, wherein the light-emitting layer includes a light-emitting unit located at the pixel opening; The reflective portion is located in the pixel defining portion, and is used to gather the light emitted by the light emitting unit toward a direction perpendicular to the array substrate, and at least part of the material of the pixel defining portion includes a light-transmitting material.

10. The preparation method according to claim 9, characterized in that: After the step of preparing a first pixel definition material layer on the array substrate, the method further comprises: Performing patterning on the first pixel definition material layer to obtain a first defining portion and a sacrificial portion located between two adjacent first defining portions, wherein the first defining portion and the sacrificial portion enclose a virtual pixel opening; In the step of preparing a second pixel definition material layer on a side of the reflective portion away from the array substrate, and patterning the second pixel definition material layer and the first pixel definition material layer, the method includes: Etching the second pixel definition material layer at the portion of the dummy pixel opening and the sacrificial portion to form the pixel definition layer having the pixel opening; Preferably, after the step of preparing a reflective material layer on a side of the first pixel definition material layer facing away from the array substrate, the method further comprises: An isolation structure is prepared on a side of the reflective material layer facing away from the array substrate, wherein the isolation structure encloses a plurality of isolation openings, and at least some of the pixel openings are connected to at least some of the isolation openings; Alternatively, after the step of preparing a second pixel definition material layer on a side of the reflective portion away from the array substrate, the method further comprises: An isolation structure is prepared on a side of the second pixel definition material layer away from the array substrate, the isolation structure encloses a plurality of isolation openings, and at least some of the pixel openings are connected to at least some of the isolation openings.

Images