Display panel, method for manufacturing display panel, and display device

Abstract

The application discloses a display panel, a preparation method of the display panel and a display device. The display panel comprises a substrate, an isolation structure arranged on one side of the substrate, the isolation structure comprising a plurality of mutually insulated sub-isolation structures, and at least two sub-isolation structures surrounding an isolation opening. The display panel further comprises a first electrode layer comprising a plurality of first electrode blocks, and the first electrode blocks are arranged in the isolation opening, and the adjacent first electrode blocks are selectively conducted through the sub-isolation structure. The plurality of mutually insulated sub-isolation structures are arranged to selectively conduct the adjacent first electrode blocks through the sub-isolation structure, to realize the individual control of the single or multiple first electrode blocks, and improve the display effect and the display stability of the display panel.

Description

Technical Field

[0001] This application belongs to the field of electronic product technology, and in particular relates to a display panel, a method for preparing the display panel, and a display device. Background Technology

[0002] With the advancement of technology, digital display devices such as smartphones and tablets have been widely used, and the display panel is an indispensable human-computer interaction interface in these devices. Organic Light Emitting Diode (OLED) display panels, for example, have advantages such as self-illumination, energy saving, flexibility, and good adaptability. Furthermore, display devices using OLEDs do not require a backlight and feature fast response times and excellent display quality, attracting user attention and being widely used in smartphones, tablets, and other terminal products.

[0003] In many existing display panels, poor signal transmission can easily occur between the electrodes used to drive the light-emitting structure, which affects the display effect and stability of the display panel and reduces the user experience.

[0004] Therefore, there is an urgent need for a new display panel, a method for manufacturing the display panel, and a display device. Summary of the Invention

[0005] This application provides a display panel, a method for manufacturing the display panel, and a display device. By setting multiple mutually insulated sub-isolation structures, adjacent first electrode blocks can be selectively connected through the sub-isolation structures, thereby achieving individual control of one or more first electrode blocks and improving the display effect and display stability of the display panel.

[0006] One embodiment of this application provides a display panel, including: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure including a plurality of mutually insulated sub-isolation structures, at least two of the sub-isolation structures forming an isolation opening; a first electrode layer, the first electrode layer including a plurality of first electrode blocks, the first electrode blocks being disposed within the isolation opening, and adjacent first electrode blocks being selectively connected through the sub-isolation structures.

[0007] According to one aspect of this application, the isolation structure further includes a plurality of slots disposed between adjacent sub-isolation structures; preferably, a signal line is provided in the slot, and the signal line is electrically connected to one of the sub-isolation structures.

[0008] According to one aspect of this application, the isolation openings are arranged in an array along a first direction and a second direction, the first direction and the second direction intersecting; two of the sub-isolation structures form an isolation opening, and the plurality of slots include slots extending along the first direction and slots extending along the second direction; or, the isolation openings are arranged in an array along the first direction and the second direction, four of the sub-isolation structures form an isolation opening, the isolation openings have diagonal regions between them, and the slots are located in the diagonal regions; preferably, the orthographic projection of the isolation opening on the substrate is rectangular.

[0009] According to one aspect of this application, the sub-isolation structure includes a first side facing the isolation opening, and in at least two of the sub-isolation structures surrounding the same isolation opening, the first side of each sub-isolation structure has a different slope relative to the plane of the substrate.

[0010] In another aspect, the present invention provides a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure comprising a plurality of mutually insulated sub-isolation structures, at least two of the sub-isolation structures forming an isolation opening; wherein, the sub-isolation structure includes a first portion disposed near the substrate, the first portion including a first side facing the isolation opening, and among the sub-isolation structures surrounding the same isolation opening, at least two of the sub-isolation structures have different slopes of the first side relative to the plane of the substrate.

[0011] According to another aspect of this application, the first side surface includes a first sub-side surface and a second sub-side surface with different slopes relative to the plane where the substrate is located, the angle between the first sub-side surface and the plane where the substrate is located is α1, and the angle between the second sub-side surface and the plane where the substrate is located is α2; wherein, α1 < α2 < 90°; preferably, 10° ≤ α1 ≤ 60°; preferably, the difference between the angle between the first sub-side surface and the plane where the substrate is located and the angle between the second sub-side surface and the plane where the substrate is located is greater than or equal to 10°.

[0012] According to another aspect of this application, the sub-isolation structure includes a first portion and a second portion arranged sequentially along a direction away from the substrate, wherein the orthographic projection of the first portion onto the substrate lies within the orthographic projection of the second portion onto the substrate; the first portion includes a first sub-section and a second sub-section disposed on the side of the first sub-section facing away from the substrate; in a direction perpendicular to the plane of the substrate, the orthographic projection of the second sub-section onto the substrate lies within the orthographic projection of the first sub-section onto the substrate; preferably, the second sub-section has a second side facing the isolation opening, and the slope of the second side relative to the plane of the substrate is different from the slope of each of the first sides relative to the plane of the substrate; preferably, the slope of the second side relative to the plane of the substrate is greater than the slope of each of the first sides relative to the plane of the substrate.

[0013] According to another aspect of this application, a pixel definition layer is further included between the substrate and the isolation structure, the pixel definition layer including a plurality of pixel openings, the orthographic projection of the pixel openings on the substrate being located within the orthographic projection range of the isolation openings on the substrate; preferably, the isolation structure is disposed on the side of the pixel definition layer opposite to the substrate; preferably, a light-emitting layer is further included, the light-emitting layer including a light-emitting structure, at least partially disposed within the pixel openings.

[0014] According to another aspect of this application, the display panel further includes a first electrode layer, the first electrode layer including a plurality of first electrode blocks, the first electrode blocks being disposed within the pixel opening and extending to the side of the pixel definition layer opposite to the substrate; the first electrode blocks overlapping with at least one first side, and the first electrode blocks not overlapping with at least one first side of an adjacent sub-isolation structure.

[0015] In another aspect, the present invention provides a method for manufacturing a display panel, comprising: providing a substrate; forming a plurality of mutually insulated sub-isolation structures on one side of the substrate, the sub-isolation structures constituting an isolation structure, the sub-isolation structures surrounding an isolation opening, each sub-isolation structure including a first portion and a second portion arranged sequentially along a direction away from the substrate, the first portion being projected onto the substrate in the orthographic projection of the second portion onto the substrate, the first portion including a first segment disposed close to the substrate, the first segment including a first side facing the isolation opening, and in the sub-isolation structures surrounding the same isolation opening, at least two of the first side faces having different slopes relative to the plane of the substrate.

[0016] In another aspect, the present invention provides a display device, including a display panel as described in any of the above embodiments.

[0017] Compared with the prior art, the display panel provided in the embodiments of the present invention includes a substrate, an isolation structure, and a first electrode layer. The sub-isolation structures of the isolation structure are mutually insulated, that is, there is no direct electrical connection between the sub-isolation structures. The first electrode block is disposed in the isolation opening formed by the sub-isolation structures. Adjacent first electrode blocks are selectively connected through the sub-isolation structures. That is, two adjacent first electrode blocks can be connected to the same sub-isolation structure and connected through the same sub-isolation structure. Alternatively, the first electrode block can be not connected to a certain sub-isolation structure, so that one or more first electrode blocks are mutually insulated from other first electrode blocks. This allows for individual control of one or more first electrode blocks, improving the display effect and display stability of the display panel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0020] Figure 2 One embodiment provided Figure 1 A magnified structural diagram of region Q in the middle region;

[0021] Figure 3 This is provided in another embodiment. Figure 1 A magnified structural diagram of region Q in the middle region;

[0022] Figure 4 One embodiment provided Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0023] Figure 5 yes Figure 4 A magnified structural diagram of region P in the middle area;

[0024] Figure 6 One embodiment provided Figure 3 Schematic diagram of the cross-sectional structure at the CC point;

[0025] Figure 7 This is provided in another embodiment. Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 8 This is yet another embodiment provided. Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0027] Figure 9 This is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention;

[0028] Figure 10 This is a cross-sectional schematic diagram of the structure obtained in step S110 of the method for preparing a display panel according to an embodiment of the present invention.

[0029] In the attached image:

[0030] 10. Substrate;

[0031] 20. Pixel definition layer;

[0032] 30. Sub-isolation structure; 31. First part; 311. First division; 312. Second division;

[0033] 32. Part Two; 3. Isolation Structure;

[0034] 40. Emissive layer;

[0035] 50. First electrode block;

[0036] 60. Second electrode block;

[0037] 70. Encapsulation layer;

[0038] B. Diagonal region;

[0039] X, isolation opening; S, pixel opening; K, slot;

[0040] E, First side view; E1, First sub-side view; E2, Second sub-side view;

[0041] X, first direction; Y, second direction; Z, thickness direction. Detailed Implementation

[0042] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the 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 this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0044] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0045] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0046] Currently, for display panels where the cathode is positioned opposite the light-emitting layer, different light-emitting layers and their corresponding cathodes are usually disconnected by an isolation structure, while the cathode will overlap and contact the isolation structure so that adjacent cathodes can be electrically connected.

[0047] However, due to the structural limitations of the aforementioned isolation structure, individual control of a single cathode is not possible.

[0048] To address the aforementioned issues, the display panel provided in this embodiment of the invention incorporates multiple mutually insulated sub-isolation structures. These sub-isolation structures allow for selective conduction between adjacent first electrode blocks, enabling individual control of one or more first electrode blocks and improving the display effect and stability of the display panel.

[0049] This application provides a display panel, a method for manufacturing the display panel, and a display device. The following will describe these in conjunction with the accompanying drawings. Figures 1 to 10 Various embodiments of the display panel, the method for manufacturing the display panel, and the display device are described.

[0050] Please see Figures 1 to 4 The present application provides a display panel including: a substrate 10, an isolation structure 3 and a first electrode layer. The isolation structure 3 is disposed on one side of the substrate 10 and includes a plurality of mutually insulated sub-isolation structures 30, with at least two sub-isolation structures 30 forming an isolation opening X. The first electrode layer includes a plurality of first electrode blocks 50, which are disposed within the isolation opening X. Adjacent first electrode blocks 50 are selectively connected through the sub-isolation structures 30.

[0051] The display panel provided in this embodiment of the invention includes a substrate 10, an isolation structure 3, and a first electrode layer. The sub-isolation structures 30 of the isolation structure 3 are mutually insulated, that is, there is no direct electrical connection between the sub-isolation structures 30. The first electrode block 50 is disposed in the isolation opening X formed by the sub-isolation structures 30. Adjacent first electrode blocks 50 are selectively connected through the sub-isolation structures 30. That is, two adjacent first electrode blocks 50 can be connected to the same sub-isolation structure 30 and connected through the same sub-isolation structure 30. Alternatively, the first electrode block 50 can be not connected to a certain sub-isolation structure 30, so that one or more first electrode blocks 50 are mutually insulated from other first electrode blocks 50. This allows for individual control of one or more first electrode blocks 50, improving the display effect and display stability of the display panel.

[0052] It should be noted that since the isolation opening X is formed by at least two sub-isolation structures 30, and the first electrode block 50 is located inside the isolation opening X, at least two sub-isolation structures 30 are provided around a single first electrode block 50. Depending on actual needs, the first electrode block 50 can choose to overlap one or more of the surrounding sub-isolation structures 30 to receive signals through the sub-isolation structures 30.

[0053] like Figure 2 As shown, an isolation opening X can be formed by two sub-isolation structures 30, or as... Figure 3 As shown, an isolation opening X can be formed by four sub-isolation structures 30. Of course, depending on the shape and arrangement of the isolation opening X, other numbers of sub-isolation structures 30 can be selected to form the isolation opening X, without any special limitation.

[0054] The sub-isolation structure 30 includes a conductive material, which can be a metal such as molybdenum, aluminum, titanium, or silver.

[0055] In order to achieve electrical connection between two adjacent first electrode blocks 50, the two adjacent first electrode blocks 50 need to be connected to the same sub-isolation structure 30. That is, the two adjacent first electrode blocks 50 need to be connected to different sides of the same sub-isolation structure 30 respectively, so as to achieve conduction by utilizing the sub-isolation structure 30.

[0056] Depending on actual needs, several first electrode blocks 50 located in a certain area can be interconnected and electrically connected, while being insulated from first electrode blocks 50 located in other areas, thus achieving regional individual control of the first electrode blocks 50. Alternatively, each first electrode block 50 can be controlled independently without being connected to each other via the sub-isolation structure 30.

[0057] The number and specific shape of the sub-isolation structures 30 surrounding a single first electrode block 50 are related to the shape and arrangement of the isolation openings X.

[0058] For example, such as Figure 2 As shown, when the orthographic projection of the isolation opening X on the substrate 10 is rectangular, in order to facilitate overlapping, four sub-isolation structures 30 can be set on the four sides of the isolation opening X. When the isolation opening X is arranged in an array along the first direction X and the second direction Y respectively, a first electrode block 50 located in the isolation opening X can be selectively connected through the four sub-isolation structures 30 and the other four adjacent first electrode blocks 50.

[0059] Of course, the orthographic projection of the isolation opening X on the substrate 10 can also be other shapes, such as rhombus, circle, etc. When the orthographic projection of the isolation opening X on the substrate 10 is circular, two or more sub-isolation structures 30 can be set to respectively form a certain arc-shaped edge of the isolation opening X.

[0060] When the isolation openings X are arranged in an array along the first direction X and the second direction Y respectively, for ease of control, the first electrode blocks 50 arranged along the first direction X, that is, those located in the same row, can be connected through the sub-isolation structure 30, or the first electrode blocks 50 arranged along the second direction Y, that is, those located in the same column, can be connected through the sub-isolation structure 30, without any special limitation.

[0061] Please see Figure 2 , Figure 3 and Figure 6 In order to achieve mutual insulation between adjacent sub-isolation structures 30, the isolation structure 3 also includes multiple slots K, which are set between adjacent sub-isolation structures 30.

[0062] The slot K refers to removing part of the material from the isolation structure 3 to form a blank area, i.e., the slot K. The isolation structure 3 is divided into multiple mutually insulated sub-isolation structures 30 by the slot K. Insulating material can be filled into the slot K to ensure the flatness of the display panel. In other embodiments of this application, insulation between adjacent sub-isolation structures 30 can be achieved by providing insulating material or insulating structures between adjacent sub-isolation structures 30.

[0063] Optionally, a signal line is provided in the slot K, which is electrically connected to a sub-isolation structure 30. This can improve space utilization and facilitate the transmission of signals such as VSS (low-level voltage) signals between the signal line and the sub-isolation structure 30. It is necessary to ensure that the signal line is kept insulated from the other sub-isolation structure 30 to avoid problems such as short circuits or signal transmission errors.

[0064] Optional, such as Figure 2 As shown, when the isolation openings X are arranged in an array along the first direction X and the second direction Y respectively, the two sub-isolation structures 30 surround the isolation openings X. The multiple slots K include slots K extending along the first direction X and slots K extending along the second direction Y. The two are intersected to make the isolation openings X into two sub-isolation structures 30. The first electrode block 50 can be selectively connected through the two sub-isolation structures 30 and the adjacent first electrode block 50. The design of the slots K is simple and easy to implement.

[0065] Optionally, when the isolation openings X are arranged in an array along the first direction X and the second direction Y respectively, there is a diagonal region B between the isolation openings X, and four sub-isolation structures 30 surround the isolation openings X, with slots K set in the diagonal region B, and the first direction X and the second direction Y intersecting.

[0066] When the orthographic projection of the isolation opening X on the substrate 10 is rectangular, the area between adjacent isolation openings X specifically includes the area between each opposite side of the isolation opening X and the diagonal area B. Compared with setting the slot K in the area between each opposite side of the isolation opening X, setting the slot K in the diagonal area B is easier to implement, the space in the diagonal area B is relatively abundant, and the impact on the first electrode overlap is smaller.

[0067] Optional, such as Figure 3 As shown, when the center line connecting four adjacent isolation openings X forms a rectangle, two intersecting slots K can be set to connect the opposite right angles of the two isolation openings X respectively. In other words, the line connecting the vertices of the four adjacent right angles of the four adjacent isolation openings X forms a rectangle, and the two slots K are set on the diagonal of the rectangle formed by the line connecting the vertices respectively.

[0068] Of course, the specific location of the slot K is not limited to the above embodiment. It can also be adjusted according to the specific arrangement of the isolation opening X, i.e. the corresponding pixel arrangement. As long as the isolation structure 3 can be divided into multiple mutually insulated sub-isolation structures 30 through the slot K, and the adjacent first electrode blocks 50 can be selectively connected through the sub-isolation structures 30, there is no special limitation.

[0069] Please see Figure 3 and Figure 4In order to achieve selective conduction between adjacent first electrode blocks 50 through sub-isolation structures 30, in some optional embodiments, the sub-isolation structure 30 includes a first side surface E facing the isolation opening X. Among the sub-isolation structures 30 surrounding the same isolation opening X, at least two sub-isolation structures 30 have different slopes of their first side surface E relative to the plane where the substrate 10 is located.

[0070] When fabricating the first electrode block 50, the greater the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more difficult it is for the first electrode block 50 to extend and overlap on the first side surface E. Conversely, the smaller the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more likely the first electrode block 50 is to overlap with the first side surface E of the sub-isolation structure 30. Therefore, the slope of the first side surface E of each sub-isolation structure 30 relative to the plane of the substrate 10 can be used to adjust and control whether the first electrode block 50 overlaps with the first side surface E of each sub-isolation structure 30, thereby achieving individual control of adjacent first electrode blocks 50 and improving the display effect and display stability of the display panel.

[0071] It should be noted that the sub-isolation structure 30 can overlap with one first electrode block 50, two first electrode blocks 50, or not overlap with any of the first electrode blocks 50. For example, the sub-isolation structure 30 has two opposing first side surfaces E. When a first electrode block 50 overlaps with each of these two first side surfaces E, the two first electrode blocks 50 can be connected through the sub-isolation structure 30. Figure 6 and Figure 7 The sub-isolation structure 30 on the right side is shown. However, when only one first side E has a first electrode block 50 attached, or when none of the first side E has a first electrode block 50 attached, the two first electrode blocks 50 cannot be connected, as shown below. Figure 6 China and Figure 7 The left sub-isolation structure 30 is shown in the middle.

[0072] This invention also provides another display panel, including: a substrate 10; an isolation structure 3 disposed on one side of the substrate 10, the isolation structure 3 including a plurality of mutually insulated sub-isolation structures 30, at least two sub-isolation structures 30 forming an isolation opening X; wherein, the sub-isolation structure 30 includes a first portion 311 disposed near the substrate 10, the first portion 311 including a first side surface E facing the isolation opening X, and among the sub-isolation structures 30 surrounding the same isolation opening X, at least two sub-isolation structures 30 have different slopes of their first side surfaces E relative to the plane of the substrate 10.

[0073] The display panel provided in this embodiment of the invention includes a substrate 10 and an isolation structure 3. The sub-isolation structures 30 of the isolation structure 3 are mutually insulated, that is, there is no direct electrical connection between the sub-isolation structures 30. When the first electrode block 50 is subsequently fabricated, the greater the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more difficult it is for the first electrode block 50 to extend and overlap on the first side surface E. Conversely, the smaller the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more likely the first electrode block 50 is to overlap with the first side surface E of the sub-isolation structure 30. In this embodiment, among the sub-isolation structures 30 surrounding the same isolation opening X, at least two sub-isolation structures 30 have different slopes of their first side surface E relative to the plane of the substrate 10. Therefore, the slope of the first side surface E of each sub-isolation structure 30 relative to the plane of the substrate 10 can be used to adjust and control whether the first electrode block 50 overlaps with the first side surface E of the surrounding adjacent sub-isolation structures 30, thereby achieving individual control of adjacent first electrode blocks 50 and improving the display effect and display stability of the display panel.

[0074] Optionally, the sub-isolation structure 30 includes a first portion 31 and a second portion 32 arranged sequentially along a direction away from the substrate 10, wherein the orthographic projection of the first portion 31 onto the substrate 10 is located within the orthographic projection of the second portion 32 onto the substrate 10.

[0075] In this embodiment, the isolation structure 3 includes a first part 31 and a second part 32 arranged sequentially along the direction away from the substrate 10. The orthographic projection of the first part 31 onto the substrate 10 is located within the orthographic projection of the second part 32 onto the substrate 10. Specifically, the orthographic projection of the side surface of the first part 31 facing the substrate 10 onto the substrate 10 can be smaller than or equal to the orthographic projection of the side surface of the second part 32 facing the substrate 10 onto the substrate 10.

[0076] Optionally, the first portion 31 of the isolation structure 3 includes a first segment 311 disposed near the substrate 10, and the first segment 311 includes a first side surface E facing the isolation opening X.

[0077] Since this embodiment only adjusts and controls the slope of the first side surface E of the sub-isolation structure 30 in the isolation structure 3, and has no effect on other parts of the isolation structure 3, the other parts of the isolation structure 3 can remain stable, avoiding changes in the subsequent etching process due to different structures, and reducing process risks.

[0078] The substrate 10 primarily serves a supporting and load-bearing function. Other film layers are sequentially stacked on the substrate 10. Here, "stacked" refers to the other film layers being sequentially arranged along the thickness direction Z of the substrate 10. The substrate 10 can contain various film layer structures, and the specific composition of the film layer structure of the substrate 10 is not limited in this embodiment.

[0079] In some optional embodiments, the display panel further includes a first electrode layer, which includes a plurality of first electrode blocks 50. The first electrode blocks 50 are disposed within the pixel opening S and extend to the side of the pixel definition layer 20 away from the substrate 10. The first electrode blocks 50 overlap with at least one first side E, and the first electrode blocks 50 do not overlap with at least one first side E of the adjacent sub-isolation structure 30.

[0080] It should be noted that, since a sub-isolation structure 30 is typically used to transmit voltage signals, such as VSS voltage signals, to the first electrode block 50, the first electrode block 50 needs to be connected to at least one first side surface E in order to obtain voltage signals through the sub-isolation structure 30. When the first electrode block 50 is not connected to the first side surface E of an adjacent sub-isolation structure 30, it means that this first electrode block 50 will not be connected to the first electrode blocks 50 corresponding to other first side surfaces E of this sub-isolation structure 30.

[0081] In this embodiment, the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10 can be adjusted to achieve the purpose of the first electrode block 50 overlapping with at least one first side surface E, and the first electrode block 50 not overlapping with at least one first side surface E of the adjacent sub-isolation structure 30.

[0082] The specific overlap relationship between the first electrode block 50 and the first portion 31 is not limited in the embodiments of the present invention. For example, when the first electrode block 50 can overlap with the first side surface E of the first portion 311, the first electrode can overlap only a part of the first side surface E of the first portion 311, or the first electrode block 50 can overlap the entire first side surface E of the first portion 311.

[0083] Optionally, the display panel may also include a pixel definition layer 20 disposed between the substrate 10 and the isolation structure 3. The pixel definition layer 20 includes a plurality of pixel openings S, and the orthographic projection of the pixel openings S on the substrate 10 is located within the orthographic projection range of the isolation openings X on the substrate 10.

[0084] In this embodiment, the pixel definition layer 20 is disposed on the substrate 10 and includes a pixel opening S. A light-emitting layer 40 can be disposed in the pixel opening S to realize the light-emitting display of the display panel.

[0085] Optionally, the light-emitting layer 40 includes a light-emitting structure, which is at least partially disposed within the pixel opening S.

[0086] Optionally, a second electrode block 60 is provided on the side of the light-emitting structure facing the substrate 10, and the first electrode block 50 and the second electrode block 60 together drive the light-emitting structure to emit light.

[0087] Optionally, the orthographic projection of the pixel opening S on the substrate 10 is located within the orthographic projection range of the isolation opening X on the substrate 10.

[0088] In this embodiment, the area of ​​the isolation opening X is larger than the area of ​​the pixel opening S, which can reduce the influence of the isolation structure 3 on the light emission angle of the light-emitting layer 40.

[0089] For example, the multiple light-emitting structures include, but are not limited to, a red light-emitting structure for emitting red light, a green light-emitting structure for emitting green light, and a blue light-emitting structure for emitting blue light. Each light-emitting structure may include a stacked hole injection layer (HIL), a hole transport layer (HTL), a light-emitting material layer, an electron injection layer (EIL), and an electron transport layer (ETL).

[0090] Optionally, the isolation structure 3 is disposed on the side of the pixel definition layer 20 facing away from the substrate 10. For example, the orthographic projection of the isolation structure 3 onto the substrate 10 is located outside the orthographic projection of the pixel opening S onto the substrate 10. The presence of the isolation structure 3 can separate different first electrode blocks 50 corresponding to adjacent light-emitting structures during the display panel manufacturing process, thereby enabling individual control of different first electrode blocks 50.

[0091] Please see Figure 3 , Figure 4 as well as Figure 6 In some optional embodiments, the first side surface E includes a first sub-side surface E1 and a second sub-side surface E2 with different slopes relative to the plane where the substrate 10 is located. The angle between the first sub-side surface E1 and the plane where the substrate 10 is located is α1, and the angle between the second sub-side surface E2 and the plane where the substrate 10 is located is α2.

[0092] In this embodiment, the plane on which the substrate 10 is located can be understood as the side surface of the substrate 10 facing the isolation structure 3. The larger the angle α1 between the first sub-side surface E1 and the plane on which the substrate 10 is located, the steeper the slope of the first sub-side surface E1; the smaller the angle α1, the gentler the slope of the first sub-side surface E1.

[0093] Similarly, the larger the angle α2 between the second sub-side surface E2 and the plane containing the substrate 10, the steeper the slope of the second sub-side surface E2; the smaller the angle α2, the gentler the slope of the second sub-side surface E2.

[0094] It is understandable that the steeper the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more difficult it is for the first electrode block 50 to extend and overlap on the first side surface E. In this embodiment, α2 > α1, that is, the second sub-side surface E2 is steeper than the first sub-side surface E1. By adjusting the specific size of α2 and α1, the first electrode block 50 can overlap with the first sub-side surface E1, but not with the second sub-side surface E2, thereby avoiding electrical connection between adjacent first electrode blocks 50. The first electrode blocks 50 can be controlled and adjusted separately.

[0095] In some embodiments, 10° ≤ α1 ≤ 60°. Exemplarily, α1 is one of 10°, 30°, 45°, and 60°.

[0096] As can be seen from the foregoing, the larger the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located, the steeper the slope of the first sub-side surface E1, and the greater the difficulty for the first electrode block 50 to extend on the first sub-side surface E1 to overlap with the first portion 311. Therefore, in this embodiment of the invention, the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located is set to no more than 60° to improve the overlap reliability between the first electrode block 50 and the first portion 311.

[0097] Furthermore, if the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located is smaller, it will cause some film layers of the light-emitting layer 40 to easily come into contact with the first portion 311 during the fabrication process of the light-emitting layer 40, resulting in lateral leakage and affecting the reliability of the display panel. Therefore, in this embodiment of the invention, the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located is set to be no less than 10°, thereby reducing the probability of the first portion 311 coming into contact with some film layers in the light-emitting layer 40 and improving the reliability of the display panel.

[0098] In some embodiments, α1 < α2 < 90°.

[0099] In this embodiment of the invention, the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located, and the angle α2 between the second sub-side surface E2 and the plane where the substrate 10 is located, are both acute angles.

[0100] It should be noted that the first sub-side E1 and the second sub-side E2 can refer to different sub-sides of the same sub-isolation structure 30, such as... Figure 4 As shown, they can also be different sub-sides of different sub-isolation structures 30, such as Figure 6As shown, there are no special limitations.

[0101] Optionally, the difference between the angle α1 between the first sub-side surface E1 and the plane where the substrate 10 is located and the angle α2 between the second sub-side surface E2 and the plane where the substrate 10 is located is greater than or equal to 10.

[0102] It is understandable that the difference between the angle α1 between the first sub-side surface E1 and the plane of the substrate 10 and the angle α2 between the second sub-side surface E2 and the plane of the substrate 10 should not be too small. If it is too small, it may cause the first electrode block 50 to overlap with both the first sub-side surface E1 and the second sub-side surface E2 at the same time, or the first electrode block 50 to not overlap with either the first sub-side surface E1 or the second sub-side surface E2 at the same time. Therefore, it is necessary to appropriately increase the difference between the angle α1 between the first sub-side surface E1 and the plane of the substrate 10 and the angle α2 between the second sub-side surface E2 and the plane of the substrate 10 to ensure that the first electrode block 50 can overlap with one of the first sub-side surface E1 and the second sub-side surface E2, but not with the other.

[0103] In some alternative embodiments, the first portion 31 includes a first portion 311 and a second portion 312 disposed on the side of the first portion 311 away from the substrate 10; in a direction perpendicular to the plane of the substrate 10, the orthographic projection of the second portion 312 onto the substrate 10 is located within the orthographic projection of the first portion 311 onto the substrate 10.

[0104] Specifically, the orthographic projection of the side surface of the second portion 312 facing the substrate 10 onto the substrate 10 can be smaller than, or equal to, the orthographic projection of the side surface of the first portion 311 facing the substrate 10 onto the substrate 10. For example, when the cross-sections of both the first portion 311 and the second portion 312 are trapezoidal, the orthographic projection of the side surface of the second portion 312 facing the substrate 10 onto the substrate 10 can be equal to the orthographic projection of the side surface of the first portion 311 facing away from the substrate 10 onto the substrate 10.

[0105] Furthermore, compared to the isolation structure 3 in the related technology, the embodiment of the present invention does not change the structural dimensions at the corresponding position of the second part 32, but only adjusts the dimensions of the first part 311. This allows for the adjustment and control of whether the first electrode block 50 overlaps with the first sub-side surface E1 and the second sub-side surface E2 while ensuring the consistency of the etching process of the first part 311 and the second part 32.

[0106] It should be noted that the material composition of the first portion 311, the second portion 312, and the second part 32 is not limited in this embodiment of the invention. The first portion 311 may include a conductive material to achieve electrical connection between adjacent first electrode blocks 50; or the first portion 311 may also be an insulating material to achieve individual control of the isolated first electrode blocks 50. Furthermore, the material of the first portion 311 may be the same as the material of the second portion 312, or the materials of the two may be different.

[0107] In some alternative embodiments, the second portion 312 has a second side facing the pixel opening S, the slope of which is different from the slope of the plane on which the substrate 10 is located compared with the slope of each of the first sides E relative to the plane on which the substrate 10 is located.

[0108] In this embodiment of the invention, the dimensions and shapes of the first portion 311 and the second portion 312 can be designed separately to meet different needs of the display panel. Specifically, by setting the slope of the second side relative to the plane of the substrate 10 to be different from the slope of each of the first side E relative to the plane of the substrate 10, the shapes and dimensions of the first portion 311 and the second portion 312 are not the same or matched, thereby ensuring the reliability of the subsequent encapsulation layer 707 fabrication in the second portion 312.

[0109] Optionally, the slope of the second side relative to the plane of the substrate 10 is greater than the slope of each first side E relative to the plane of the substrate 10, so as to facilitate the overlap of the first electrode block 50 and the first side E.

[0110] Furthermore, the encapsulation layer 70 mentioned in this embodiment refers to the encapsulation layer 70 that needs to be in contact with the isolation structure 3. In addition to the encapsulation layer 70, the display panel may also include other encapsulation film layers, which are located on the side of the encapsulation layer 70 facing away from the substrate 10. This embodiment does not impose any limitations on this.

[0111] In some alternative embodiments, the first portion 311 has a first orthographic projection on the substrate 10, and the second portion 32 has a second orthographic projection on the substrate 10, with the first orthographic projection located within the second orthographic projection.

[0112] The first orthographic projection corresponding to the first portion 311 is located within the second orthographic projection corresponding to the second portion 32, that is, in a plane parallel to the substrate 10. The second portion 32 can extend beyond the first portion 311. This design can reduce the probability of lateral leakage. Specifically, in the fabrication process of the light-emitting layer 40, at least a portion of the film layer in the light-emitting layer 40 needs to be formed by vapor deposition. Since the second portion 32 can extend beyond the first portion 311, it can play a certain shielding role during the vapor deposition process, limiting the vapor deposition of the film layer on the side of the second portion 32 facing the substrate 10. This reduces the probability that a portion of the film layer in the light-emitting layer 40 will come into contact with the first portion 311, thereby reducing the probability of lateral leakage.

[0113] In some embodiments, the minimum distance between the first orthographic projection and the second orthographic projection is L1, where L1 satisfies: 0.2μm≤L1≤1.5μm.

[0114] If L1 is too small, there is a risk that part of the film layer in the light-emitting layer 40 may overlap with the first portion 311 during the fabrication process, which could lead to lateral leakage. Therefore, in this embodiment of the invention, L1 is set to be no less than 0.2 μm to reduce the risk of overlap between part of the film layer in the light-emitting layer 40 and the first portion 311, thereby improving reliability.

[0115] If L1 is too large, it indicates that the second part 32 exceeds the first part 311 by too much. Typically, the second part 32 is relatively thin in the thickness direction Z. In subsequent processes, because the second part 32 exceeds the first part 311 by too much, there is a risk of breakage, affecting the structural reliability of the isolation structure 3 and consequently reducing the yield rate of the display panel. Therefore, in this embodiment of the invention, L1 is set to be no greater than 1.5 μm to reduce the risk of breakage in subsequent processes due to the excessive size of the second part 32, thereby improving the yield rate of the display panel.

[0116] Please see Figure 7 This invention also provides a method for manufacturing a display panel, comprising:

[0117] S110: Provides substrate 10, such as Figure 8 As shown;

[0118] S120: A plurality of mutually insulated sub-isolation structures 30 are formed on one side of the substrate 10. The sub-isolation structures 30 constitute an isolation structure 3 and surround an isolation opening X. Each sub-isolation structure 30 includes a first portion 311 disposed near the substrate 10. The first portion 311 includes a first side surface E facing the isolation opening X. Among the sub-isolation structures 30 surrounding the same isolation opening X, at least two first side surfaces E have different slopes relative to the plane of the substrate 10, such as... Figure 3 , Figure 6 or Figure 7 As shown.

[0119] The display panel fabrication method provided in this embodiment of the invention forms an isolation structure 3 in which each sub-isolation structure 30 is mutually insulated, meaning there is no direct electrical connection between the sub-isolation structures 30. Each sub-isolation structure 30 includes a first portion 311 located near the substrate 10, and the first portion 311 includes a first side surface E facing the isolation opening X. When subsequently fabricating the first electrode block 50, the greater the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10, the more difficult it is to extend and overlap the first electrode block 50 on the first side surface E. Conversely, the slope of the first side surface E of the sub-isolation structure 30 relative to the plane of the substrate 10... The smaller the slope of the plane, the more likely the first electrode block 50 is to overlap with the first side surface E of the sub-isolation structure 30. In this embodiment, among the sub-isolation structures 30 surrounding the same isolation opening X, at least two sub-isolation structures 30 have different slopes of their first side surfaces E relative to the plane of the substrate 10. Therefore, the slope of the first side surface E of each sub-isolation structure 30 relative to the plane of the substrate 10 can be used to adjust and control whether the first electrode block 50 overlaps with the first side surface E of the surrounding adjacent sub-isolation structures 30, thereby realizing the individual control of adjacent first electrode blocks 50 and improving the display effect and display stability of the display panel.

[0120] In step S110, the substrate 10 can be formed through processes such as coating, curing, and film formation. The substrate 10 can be a rigid substrate, such as a glass substrate; or it can be a flexible substrate, and its material can be polyimide, polystyrene, polyethylene terephthalate, poly(p-xylene), polyethersulfone, or polyethylene naphthalate. The substrate 10 is mainly used to support the devices disposed thereon.

[0121] In step S120, a first portion 311 material layer can be formed on one side of the substrate 10, and the first portion 311 material layer can be patterned to form the first portion 311 of the sub-isolation structure 30. The slope of the first side surface E of different sub-isolation structures 30 relative to the plane of the substrate 10 can be adjusted by controlling the etching rate of the first side surface E.

[0122] Optionally, the first part 31 and the second part 32 are located within the orthographic projection of the second part 32 onto the substrate 10.

[0123] Optionally, the first part 31 includes a first portion 311 and a second portion 312 disposed on the side of the first portion 311 away from the substrate 10; in a direction perpendicular to the plane of the substrate 10, the orthographic projection of the second portion 312 onto the substrate 10 is located within the orthographic projection of the first portion 311 onto the substrate 10.

[0124] This invention also provides a display device, including a display panel as described in any of the above embodiments.

[0125] The display device provided in this embodiment of the invention has the technical effects of the display panel in any of the above embodiments. The explanations of the same or corresponding structures and terms in the above embodiments will not be repeated here.

[0126] The display device provided in this application embodiment can be applied to mobile phones, or to any electronic product with display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This application embodiment does not make any special limitations on these.

[0127] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

[0128] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure includes a plurality of mutually insulated sub-isolation structures. At least two of the sub-isolation structures form an isolation opening. Each sub-isolation structure includes a first side facing the isolation opening. Among the sub-isolation structures surrounding the same isolation opening, at least two of the sub-isolation structures have different slopes of their first side relative to the plane of the substrate. A first electrode layer, comprising a plurality of first electrode blocks, wherein the first electrode blocks are disposed within the isolation opening, and adjacent first electrode blocks are selectively connected through the sub-isolation structure.

2. The display panel according to claim 1, characterized in that, The isolation structure also includes multiple slots, which are disposed between adjacent sub-isolation structures.

3. The display panel according to claim 2, characterized in that, The slot is provided with a signal line, which is electrically connected to one of the sub-isolation structures.

4. The display panel according to claim 2, characterized in that, The isolation openings are arranged in an array along a first direction and a second direction, respectively, and the first direction and the second direction intersect. The two sub-isolation structures form an isolation opening, and the plurality of slots include a slot extending along the first direction and a slot extending along the second direction; or, The isolation openings are arranged in an array along the first and second directions, and the four sub-isolation structures form an isolation opening. There are diagonal regions between the isolation openings, and the slots are located in the diagonal regions.

5. The display panel according to claim 1, characterized in that, The isolation opening has a rectangular orthographic projection on the substrate.

6. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure includes a plurality of mutually insulated sub-isolation structures, and at least two of the sub-isolation structures form an isolation opening. A pixel definition layer is disposed between the substrate and the isolation structure. The pixel definition layer includes a plurality of pixel openings, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection range of the isolation openings on the substrate. A first electrode layer, comprising a plurality of first electrode blocks, wherein the first electrode blocks are disposed within the pixel opening and extend to the side of the pixel definition layer opposite to the substrate; The sub-isolation structure includes a first portion disposed near the substrate, the first portion including a first side facing the isolation opening, and in the sub-isolation structures surrounding the same isolation opening, the slopes of the first side of at least two sub-isolation structures relative to the plane of the substrate are different, the first electrode block overlaps with at least one of the first side, and the first electrode block does not overlap with at least one of the first side of an adjacent sub-isolation structure.

7. The display panel according to claim 6, characterized in that, The first side surface includes a first sub-side surface and a second sub-side surface with different slopes relative to the plane where the substrate is located. The angle between the first sub-side surface and the plane where the substrate is located is α1, and the angle between the second sub-side surface and the plane where the substrate is located is α2. Where α1 < α2 < 90°.

8. The display panel according to claim 7, characterized in that, 10°≤α1≤60°。 9. The display panel according to claim 7, characterized in that, The difference between the angle between the first sub-side surface and the plane of the substrate and the angle between the second sub-side surface and the plane of the substrate is greater than or equal to 10°.

10. The display panel according to claim 6, characterized in that, The sub-isolation structure includes a first part and a second part arranged sequentially along a direction away from the substrate, wherein the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate; The first part includes the first portion and a second portion disposed on the side of the first portion opposite to the substrate; In a direction perpendicular to the plane of the substrate, the orthographic projection of the second portion onto the substrate lies within the orthographic projection of the first portion onto the substrate.

11. The display panel according to claim 10, characterized in that, The second portion has a second side facing the isolation opening, and the slope of the second side relative to the plane of the substrate is different from the slope of each of the first sides relative to the plane of the substrate.

12. The display panel according to claim 11, characterized in that, The slope of the second side relative to the plane of the substrate is greater than the slope of each of the first sides relative to the plane of the substrate.

13. The display panel according to claim 6, characterized in that, The isolation structure is disposed on the side of the pixel definition layer opposite to the substrate.

14. The display panel according to claim 6, characterized in that, It also includes a light-emitting layer, which includes a light-emitting structure, at least partially disposed within the pixel opening.

15. A method for manufacturing a display panel, characterized in that, A method for preparing a display panel according to any one of claims 6 to 14, the method comprising: Provide substrate; Multiple mutually insulated sub-isolation structures are formed on one side of the substrate. The sub-isolation structures constitute an isolation structure and surround an isolation opening. Each sub-isolation structure includes a first portion disposed near the substrate. The first portion includes a first side facing the isolation opening. Among the sub-isolation structures surrounding the same isolation opening, at least two of the first side faces have different slopes relative to the plane of the substrate.

16. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 14.

Images