Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate; the isolation structure is arranged on one side of the substrate, and an isolation opening is defined by the isolation structure; the first electrode is arranged on the same side, opposite to the substrate, of the isolation structure, and at least part of the orthographic projection of the first electrode on the substrate is located in the orthographic projection of the isolation opening on the substrate; the partition structure is arranged on the same side, opposite to the substrate, of the isolation structure, and at least part of the orthographic projection of the partition structure on the substrate is located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate. According to the display panel provided by the invention, the partition structure is utilized to separate the hole injection layer or prolong the transmission path of the hole injection layer, so that the first electrode is prevented from being directly conducted through the hole injection layer and the partition structure, the short circuit problem of the anode and the cathode is improved, and the display performance of the display panel is improved.

Description

Technical Field

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

[0002] 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, and desktop computers due to their advantages such as high image quality, power saving, thin body, and wide range of applications, becoming the mainstream display device.

[0003] In the traditional display panel manufacturing process, pixel patterning is usually achieved through a fine metal mask (FMM). FMM technology is mature and has rich experience in mass production. However, FMM technology also has problems such as limited precision, high development costs, and long development cycles. Fine metal mask-free technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance, and has the advantages of high performance, full-area size, and agile delivery. Patent applications CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A record relevant content of fine metal mask-free technology for reference.

[0004] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a display panel that can improve the cathode and anode short circuit problem and enhance display performance.

[0006] Based on the above objectives, the present application provides a display panel, which includes:

[0007] substrate;

[0008] An isolation structure is provided on one side of the substrate, and the isolation structure encloses an isolation opening;

[0009] a first electrode disposed on a same side of the isolation structure as the substrate, wherein an orthographic projection of the first electrode on the substrate is at least partially located within an orthographic projection of the isolation opening on the substrate;

[0010] The partition structure is arranged on the same side of the isolation structure relative to the substrate, and the orthographic projection of the partition structure on the substrate is at least partially located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate.

[0011] In one embodiment, the partition structure is arranged in a ring shape around the first electrode;

[0012] Preferably, the partition structure includes a first partition portion, and the first partition portion is provided on the same layer as the first electrode;

[0013] Preferably, the film structure of the first partition portion is the same as the film structure of the first electrode;

[0014] Preferably, the first partition portion and the first electrode each include a first transparent conductive layer, a metal conductive layer, and a second transparent conductive layer sequentially stacked in a direction away from the substrate;

[0015] Preferably, the material of the metal conductive layer includes Ag, and the materials of the first transparent conductive layer and the second transparent conductive layer include ITO;

[0016] Preferably, the thickness of the first transparent conductive layer and the second transparent conductive layer is 100 Å, and / or the thickness of the metal conductive layer is 1000 Å-1500 Å.

[0017] In one embodiment, the display panel further includes:

[0018] a pixel defining layer disposed between the substrate and the isolation structure, wherein the pixel defining layer defines a pixel opening communicating with the isolation opening, and the pixel opening exposes the first electrode;

[0019] Preferably, the partition structure includes a second partition portion, the second partition portion is provided on a side of the first partition portion away from the substrate, and the second partition portion is provided on the same layer as the pixel defining layer;

[0020] Preferably, the material of the second partition portion is the same as that of the pixel defining layer;

[0021] Preferably, the pixel defining layer has a thickness of 1000 Å-2000 Å.

[0022] In one embodiment, the display panel includes a plurality of partition structures, the plurality of partition structures are arranged in a ring shape around the first electrode and at intervals, and the orthographic projections of the plurality of partition structures on the substrate do not overlap;

[0023] Preferably, the distance between any two adjacent partition structures is equal; or, along the direction from the isolation structure to the isolation opening, the distance between any two adjacent isolation structures gradually decreases.

[0024] In one embodiment, the isolation structure includes a support portion and a crown portion, the crown portion is located on a side of the support portion away from the substrate, the area of ​​the orthographic projection of the support portion on the substrate is smaller than the area of ​​the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate.

[0025] In one embodiment, the support portion includes a first support portion and a second support portion, the first support portion is located between the second support portion and the substrate, and the orthographic projection of the second support portion on the substrate is located within the orthographic projection of the first support portion on the substrate.

[0026] In one embodiment, the display panel further includes:

[0027] a light-emitting functional layer, disposed in the isolation opening and covering the first electrode and the partition structure;

[0028] a second electrode, disposed in the isolation opening and covering the light-emitting functional layer, the second electrode overlapping the isolation structure;

[0029] Wherein, the first electrode, the light-emitting functional layer and the second electrode constitute a light-emitting unit;

[0030] Preferably, the first electrode comprises an anode, and the second electrode comprises a cathode;

[0031] Preferably, the light-emitting functional layer includes a hole injection layer, the hole injection layer covers the first electrode and at least a portion of the partition structure, and the partition structure partitions the hole injection layer.

[0032] In one embodiment, the isolation openings include a first isolation opening, a second isolation opening, and a third isolation opening, and the first isolation opening, the second isolation opening, and the third isolation opening respectively define the light-emitting units with different colors of emitted light.

[0033] In one embodiment, the display panel further includes a first encapsulation layer, and the first encapsulation layer covers the second electrode and a portion of the isolation structure.

[0034] In one embodiment, the display panel further includes a second encapsulation layer and a third encapsulation layer, wherein the second encapsulation layer is disposed on a side of the first encapsulation layer away from the substrate, and the third encapsulation layer is disposed on a side of the second encapsulation layer away from the substrate;

[0035] Preferably, the first encapsulation layer comprises an inorganic material, the second encapsulation layer comprises an organic material, and the third encapsulation layer comprises an inorganic material.

[0036] In one embodiment, the partition structure includes a first surface and a second surface arranged opposite to each other, the first surface is arranged away from the substrate relative to the second surface, and the partition structure also includes a side wall connecting the first surface and the second surface, and the angle between the side wall and the first surface is 110-130 degrees.

[0037] Based on the same inventive concept, the present application also discloses a display panel, which includes:

[0038] substrate;

[0039] An isolation structure is provided on one side of the substrate, and the isolation structure encloses an isolation opening;

[0040] a first electrode disposed on a same side of the isolation structure as the substrate, wherein an orthographic projection of the first electrode on the substrate is at least partially located within an orthographic projection of the isolation opening on the substrate;

[0041] a partition structure, located in the isolation opening and arranged in a ring shape around the first electrode;

[0042] The partition structure includes a first surface and a second surface arranged opposite to each other, the first surface is arranged away from the substrate relative to the second surface, and the partition structure also includes a side wall connecting the first surface and the second surface, and the angle between the side wall and the first surface is 110-130 degrees.

[0043] Based on the same inventive concept, the present application also discloses a method for preparing a display panel, which includes:

[0044] forming a first electrode and a partition structure on one side of the substrate;

[0045] An isolation structure is formed on the same side of the first electrode relative to the substrate; wherein the isolation structure encloses an isolation opening, and the orthographic projection of the partition structure on the substrate is at least partially located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate.

[0046] In one embodiment, the partition structure includes a first partition portion; and forming the first electrode and the partition structure on one side of the substrate includes:

[0047] forming a first electrode layer on one side of the substrate;

[0048] The first electrode layer is patterned to form the first electrode and the first partition portion.

[0049] In one embodiment, before forming the isolation structure on the same side of the first electrode relative to the substrate, the method further includes:

[0050] forming a pixel defining layer on the same side of the first electrode as the substrate; wherein the pixel defining layer defines a pixel opening communicating with the isolation opening, the pixel opening exposing the first electrode;

[0051] Preferably, the partition structure includes a second partition portion; and before forming the pixel defining layer on the same side of the first electrode as the substrate, the method further includes:

[0052] forming a pixel defining material layer on the same side of the first electrode as that of the substrate and on the side of the first partition portion away from the substrate;

[0053] patterning the pixel defining material layer to form the second partition portion and the pixel defining layer;

[0054] Preferably, after forming the isolation structure on the same side of the first electrode relative to the substrate, the method further comprises:

[0055] forming a light-emitting functional layer in the isolation opening; wherein the light-emitting functional layer covers the first electrode and the partition structure;

[0056] A second electrode is formed in the isolation opening; wherein the second electrode covers the light-emitting functional layer, the second electrode overlaps the isolation structure, and the first electrode, the light-emitting functional layer and the second electrode constitute a light-emitting unit.

[0057] Based on the same inventive concept, the present application also discloses a display device, which includes the above-mentioned display panel; or a display panel prepared by the above-mentioned method for preparing a display panel.

[0058] Compared with the prior art, the display panel provided by the present application provides a partition structure on the same side of the isolation structure relative to the substrate, and the orthographic projection of the partition structure on the substrate is located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate. The partition structure is used to separate the hole injection layer or extend the transmission path of the hole injection layer, thereby preventing the first electrode from being directly connected through the hole injection layer and the isolation structure, improving the short circuit problem between the anode and the cathode, and improving the display performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0060] Figure 1 is a schematic diagram of a related display panel;

[0061] Figure 2 is a schematic diagram of a layer structure of a related display panel;

[0062] Figure 3 A schematic diagram of the layer structure of a display panel provided in one embodiment of the present application;

[0063] Figure 4 A top view of a display panel provided in another embodiment of the present application;

[0064] Figure 5 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0065] Figure 6 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0066] Figure 7 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0067] Figure 8 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0068] Figure 9 A schematic diagram of a partial layer structure of a display panel provided in another embodiment of the present application;

[0069] Figure 10 A schematic diagram of a pixel circuit in a display panel provided by another embodiment of the present application;

[0070] Figure 11 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0071] Figure 12 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0072] Figure 13 A cross-sectional view of a partition structure provided in another embodiment of the present application;

[0073] Figure 14 A flowchart of a method for manufacturing a display panel is provided for another embodiment of the present application.

[0074] Marking Description:

[0075] 100. Display panel;

[0076] 1. Substrate; 11. Planarization layer; 12. Transistor;

[0077] 2. Isolation structure; 21. Isolation opening; 22. Support portion; 221. First support portion; 222. Second support portion; 23. Crown portion;

[0078] 3. Light-emitting unit; 31. First electrode; 32. Light-emitting functional layer; 321. Hole injection layer; 33. Second electrode;

[0079] 4. Pixel definition layer;

[0080] 5. Partition structure; 51. First partition portion; 52. Second partition portion; 53. First surface; 54. Second surface; 55. Side wall;

[0081] 61. First encapsulation layer; 62. Second encapsulation layer; 63. Third encapsulation layer. DETAILED DESCRIPTION

[0082] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0083] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0084] Reference Figure 1-2 As shown, it is a structural schematic diagram of a related display panel, which includes a substrate 1 and an isolation structure 2 arranged on one side of the substrate 1. The isolation structure 2 encloses an isolation opening 21 for accommodating the light-emitting unit 3, and adjacent light-emitting units 3 are separated by the isolation structure 2.

[0085] Among them, an isolation structure 2 is set at the gap between the light-emitting units 3 to separate the functional film layers of adjacent light-emitting units 3. In this way, in the evaporation process of multiple functional film layers, it is only necessary to perform evaporation on the entire surface of the display panel, without the use of a mask plate to evaporate the area where the light-emitting unit is located to form a functional film layer. Therefore, the process of evaporation using the isolation structure 2 does not need to consider the alignment accuracy problem during evaporation, so that the gap between the light-emitting units 3 can be designed to be smaller to increase the pixel density.

[0086] After long-term research, the inventors found that during evaporation, the hole injection layer in the light-emitting unit 3 will be evaporated onto the isolation structure 2, directly connecting the anode and the isolation structure 2, thereby causing a short circuit between the anode and the cathode.

[0087] Based on this, the present application provides a display panel solution, as detailed in the following embodiments.

[0088] Reference Figure 3 As shown, an embodiment of the present application discloses a display panel 100, which includes a substrate 1, an isolation structure 2, a first electrode 31 and a partition structure 5. The isolation structure 2 is arranged on one side of the substrate 1, and the isolation structure 2 encloses an isolation opening 21; the first electrode 31 is arranged on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the first electrode 31 on the substrate 1 is at least partially located within the orthographic projection of the isolation opening 21 on the substrate 1; the partition structure 5 is arranged on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the partition structure 5 on the substrate 1 is at least partially located between the orthographic projection of the isolation structure 2 on the substrate 1 and the orthographic projection of the first electrode 31 on the substrate 1.

[0089] The display panel 100 provided in this embodiment is provided with a partition structure 5 on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the partition structure 5 on the substrate 1 is located between the orthographic projection of the isolation structure 2 on the substrate 1 and the orthographic projection of the first electrode 31 on the substrate 1. The partition structure 5 is utilized to separate the hole injection layer or extend the transmission path of the hole injection layer to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode and enhancing the display performance of the display panel 100.

[0090] Specifically, due to the presence of the partition structure 5 , when the hole injection layer is evaporated on the partition structure 5 , the evaporated hole injection layer is isolated by the partition structure 5 , thereby preventing conduction between the hole injection layer 321 and the isolation structure 2 .

[0091] Optionally, the display panel 100 may be an organic light emitting diode (OLED) display panel or a quantum dot light emitting diode (QLED) display panel. The display panel 100 includes a display area with a display function and a non-display area, wherein the non-display area at least partially surrounds the display area. The display area of ​​the display panel 100 may be rectangular, square, circular, oval, or other shapes.

[0092] Reference Figure 4 and 5 As shown, in one embodiment, the partition structure 5 is arranged in a ring shape around the first electrode 31 to achieve all-round partitioning of the first electrode 31, thereby improving the partition effect.

[0093] Preferably, the partition structure 5 includes a first partition portion 51 , and the first partition portion 51 is provided on the same layer as the first electrode 31 to ensure a partition effect.

[0094] Preferably, the film structure of the first partition portion 51 is the same as that of the first electrode 31 for ease of preparation. During preparation, a first electrode material layer is first formed, and then the first electrode material layer is patterned to form the first electrode 31 and the first partition portion 51 .

[0095] Preferably, both the first partition portion 51 and the first electrode 31 include a first transparent conductive layer, a metal conductive layer, and a second transparent conductive layer stacked in sequence in a direction away from the substrate 1 .

[0096] Preferably, the material of the metal conductive layer includes Ag, and the material of the first transparent conductive layer and the second transparent conductive layer includes ITO. Metal Ag has excellent conductivity and can significantly reduce the overall resistance of the anode. The ITO layers on both sides also have a certain conductivity. Combined with the Ag layer, they can ensure that the current is efficiently transmitted in the anode, reduce energy loss and heat problems caused by resistance, and improve the power utilization efficiency of the display panel. At the same time, this structure can make the current evenly distributed over the entire anode surface, thereby ensuring the uniformity of pixel luminescence, avoiding the phenomenon of local overbrightness or overdarkness, and improving display quality. In other embodiments, the first electrode 31 can be a structure such as Ti / Al / ITO or ZnO / Ag / ZnO.

[0097] Preferably, the thickness of the first transparent conductive layer and the second transparent conductive layer is 100 Å.

[0098] Preferably, the thickness of the metal conductive layer is 1000A-1500A. Exemplarily, the thickness of the metal conductive layer is 1000A, 2000A, 3000A, 4000A, 1500A, etc., wherein 1A is equal to 0.1nm.

[0099] Reference Figure 4 and 5 As shown, in one embodiment, the display panel 100 includes a plurality of partition structures 5, which are arranged in a ring shape around the first electrode 31 and at intervals. The orthographic projections of the plurality of partition structures 5 on the substrate 1 do not overlap. The use of the plurality of partition structures 5 is conducive to improving the partition effect.

[0100] Optionally, the distances between any two adjacent partition structures 5 are equal to ensure the partition effect and facilitate preparation.

[0101] Optionally, the distance between two adjacent isolation structures 2 gradually decreases along the direction from the isolation structure 2 to the isolation opening 21 , so as to gradually improve the isolation effect along the direction from the isolation structure 2 to the isolation opening 21 and maximize the isolation effect of the multiple isolation structures 2 .

[0102] Reference Figure 6 As shown, in one embodiment, the display panel 100 further includes a pixel defining layer 4, which is disposed between the substrate 1 and the isolation structure 2. The pixel defining layer 4 defines a pixel opening that communicates with the isolation opening 21, and the pixel opening exposes the first electrode 31. As a result, the first electrode 31 can have a larger design area without contacting the isolation structure 2, thereby allowing the light-emitting unit to have a larger effective light-emitting area.

[0103] The pixel defining layer 4 determines the shape and position of the light-emitting unit and separates the first electrode 31 from the isolation structure 2 .

[0104] Preferably, the thickness of the pixel defining layer 4 is 1000A-2000A. Exemplarily, the thickness of the pixel defining layer 4 is 1000A, 1200A, 1300A, 1500A, 1600A, 1800A, 2000A, etc.

[0105] Preferably, the partition structure 5 includes a second partition portion 52 , which is disposed on a side of the first partition portion 51 away from the substrate 1 . The second partition portion 52 is disposed on the same layer as the pixel defining layer 4 to enhance the partition effect.

[0106] Preferably, the material of the second partition portion 52 is the same as that of the pixel defining layer 4 for ease of preparation. During preparation, the pixel defining material layer is first formed, and then the pixel defining material layer is patterned to form the second partition portion 52 and the pixel defining layer 4.

[0107] Reference Figure 7 As shown, in one embodiment, the display panel 100 further includes a light-emitting functional layer 32 and a second electrode 33. The light-emitting functional layer 32 is arranged in the isolation opening 21 and covers the first electrode 31 and the partition structure 5; the second electrode 33 is arranged in the isolation opening 21 and covers the light-emitting functional layer 32, and the second electrode 33 overlaps the isolation structure 2; wherein, the first electrode 31, the light-emitting functional layer 32 and the second electrode 33 constitute a light-emitting unit.

[0108] The second electrode 33 overlaps the isolation structure 2 , so that the isolation structure 2 connects the second electrode 33 , thereby making the isolation structure 2 a common electrode for easy driving.

[0109] Preferably, the first electrode 31 includes an anode, and the second electrode 33 includes a cathode. Different voltages are applied to the first electrode 31 and the second electrode 33 to form a voltage difference between the first electrode 31 and the second electrode 33, thereby driving the light-emitting functional layer 32 to emit light.

[0110] Alternatively, the first electrode 31 may include a multilayer structure, for example, comprising a reflective layer and a pair of conductive oxide layers covering the upper and lower surfaces of the reflective layer, respectively. The reflective layer can be formed using, for example, a metal material with excellent light reflectivity, such as silver. Each conductive oxide layer can be formed using, for example, a transparent conductive oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IGZO (Indium Gallium Zinc Oxide). The second electrode 33 can be formed using, for example, a metal material such as an alloy of magnesium and silver (MgAg).

[0111] Preferably, the light-emitting functional layer 32 includes a hole injection layer 321, which covers the first electrode 31 and at least part of the partition structure 5. The partition structure 5 isolates the hole injection layer 321 to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode.

[0112] Among them, the hole injection layer helps holes to be smoothly injected from the anode into the organic material, reduces the hole injection barrier, and improves the hole injection efficiency.

[0113] Furthermore, the light-emitting functional layer 32 further includes the following film layers:

[0114] Hole transport layer: responsible for transporting holes from the hole injection layer to the light-emitting layer, and is required to have good hole transport performance and high carrier mobility.

[0115] The light-emitting layer is the most important functional layer in an OLED device. When electrons and holes recombine in this layer, excitons are generated. Excitons de-excite and emit photons, thus generating light. The material and structure of the light-emitting layer determine the color and efficiency of the OLED's light.

[0116] Electron transport layer: transports electrons from the cathode to the light-emitting layer, allowing the electrons to smoothly reach the light-emitting layer and recombine with holes to emit light. It needs to have good electron transport ability and stability.

[0117] Electron injection layer: Modify the cathode to promote the injection of electrons from the cathode into the organic material, improve the electron injection efficiency, and improve the performance and efficiency of the device.

[0118] Reference Figure 7 As shown, in one embodiment, the isolation structure 2 includes a support portion 22 and a crown portion 23. The crown portion 23 is located on the side of the support portion 22 away from the substrate 1. The area of ​​the orthographic projection of the support portion 22 on the substrate 1 is smaller than the area of ​​the orthographic projection of the crown portion 23 on the substrate 1, and the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the crown portion 23 on the substrate 1. The isolation structure 2 is formed into a T-shaped structure, so that the isolation structure 2 can effectively block the light-emitting functional layer of adjacent light-emitting units, thereby reducing the current crosstalk problem of adjacent light-emitting units. Figure 8 As shown, in one embodiment, the support portion 22 includes a first support portion 221 and a second support portion 222. The first support portion 221 is located between the second support portion 222 and the substrate 1, and the orthographic projection of the second support portion 222 on the substrate 1 is located within the orthographic projection of the first support portion 221 on the substrate 1. The second electrode 33 overlaps the first support portion 221, which helps to improve the overlapping effect between the second electrode 33 and the support portion 22.

[0119] Specifically, the width of the crown 23 is greater than the width of the second support portion 222. As a result, the two ends of the crown 23 are protruded compared to the side surfaces of the second support portion 222, and this shape is also called an overhang. The second support portion 222 and the crown 23 are made of different materials, and the etching rate of the crown 23 is lower than the etching rate of the second support portion 222. The material of the second support portion 222 includes a conductive material, and specifically may include at least one of aluminum (Al) and an aluminum alloy. The aluminum alloy may include at least one of aluminum neodymium alloy (AlNd), aluminum yttrium alloy (AlY), or aluminum silicon alloy (AlSi). The crown 23 may be a single-layer structure or a multi-layer structure. When the crown 23 is a single-layer structure, the material of the crown 23 may include at least one of titanium, titanium nitride, molybdenum, tungsten, molybdenum-tungsten alloy, or molybdenum-niobium alloy. When the crown portion 23 has a multi-layer structure, one layer of the crown portion 23 may be made of at least one of titanium, titanium nitride, molybdenum, tungsten, a molybdenum-tungsten alloy, or a molybdenum-niobium alloy. Another layer of the crown portion 23 may be made of a conductive oxide or an inorganic insulating material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). The first support portion 221 may be made of at least one of molybdenum (Mo), titanium (Ti), titanium nitride (TiN), a molybdenum-tungsten alloy (MoW), or a molybdenum-niobium alloy (MoNb).

[0120] In one embodiment, the isolation openings 21 include a first isolation opening, a second isolation opening, and a third isolation opening. The first isolation opening, the second isolation opening, and the third isolation opening respectively define light-emitting units emitting light of different colors, thereby enhancing the richness of the display of the display panel 100. For example, the light-emitting units of different colors include light-emitting unit R, light-emitting unit B, and light-emitting unit G. Furthermore, the first isolation opening, the second isolation opening, and the third isolation opening can be configured as needed, and their shapes and sizes may vary, without specific limitation.

[0121] Furthermore, the pixel defining layer 4 is provided with a first pixel opening connected to the first isolation opening, a second pixel opening connected to the second isolation opening, and a third pixel opening connected to the third isolation opening. The areas of the orthographic projections of the first pixel opening, the second pixel opening, and the third pixel opening on the substrate 1 are the same or different. The shape of the pixel opening and the orthographic projection of the corresponding isolation opening 21 on the substrate 1 may be the same or different. Generally speaking, the area of ​​the orthographic projection of the isolation opening 21 on the array substrate 1 is larger than the area of ​​the orthographic projection of the pixel opening connected to the isolation opening 21 on the array substrate 1. The orthographic projection of the pixel opening on the array substrate 1 overlaps with the orthographic projection of the isolation opening 21 on the array substrate 1. The material of the pixel defining layer 4 is an inorganic material. For example, the pixel defining layer 4 is formed using an inorganic insulating material of at least one of silicon nitride (SiNx), silicon oxide (SiOx), and silicon oxynitride (SiON).

[0122] Furthermore, the display panel 100 also includes a pixel circuit, which is electrically connected to the light-emitting unit to drive the light-emitting unit to emit light of a corresponding color. One pixel circuit drives at least one light-emitting device to emit light. For example, the display area includes a normal display area and a light-transmitting display area. The light-transmitting display area is a display area corresponding to a sensor and has light-transmitting properties, and the normal display area is a display area not corresponding to a sensor. In the normal display area, one pixel circuit drives one light-emitting unit to emit light, and in the light-transmitting display area, one pixel circuit drives one or more light-emitting units to emit light.

[0123] refer to Figure 9 The substrate 1 includes a pixel circuit layer and a planarization layer 11. The pixel circuit layer includes a pixel circuit for driving the light-emitting unit 3 to emit light. Figure 10 The transistor 12 in the pixel circuit is shown. A via is provided in the planarization layer 11, and the first electrode 31 is electrically connected to the transistor 12 in the pixel circuit layer through the via. Furthermore, the pixel circuit layer includes at least one insulating layer, which may include at least one of an inorganic layer and an organic layer. Furthermore, the substrate 111 also includes scan lines that provide scan signals Scan and data lines that provide data signals Data to the pixel circuit.

[0124] refer to Figure 10 The pixel circuit includes a driving transistor T1 and a data transistor T2, the source of the data transistor T2 is connected to a data line providing a data signal Data, the gate of the data transistor T2 is connected to a scan line providing a scan signal Scan, the drain of the data transistor T2 is connected to the gate of the driving transistor T1, the two ends of the storage capacitor C1 are respectively connected to the gate and source of the driving transistor T1, and the drain of the driving transistor T1 is connected to the light-emitting unit 3. Figure 10 This is an embodiment of the pixel circuit. The pixel circuit of this application is not limited to Figure 10 The 2T1C pixel circuit shown may also be other pixel circuits, such as a 7T1C, 8T1C pixel circuit, etc.

[0125] Reference Figure 11 As shown, in one embodiment, the display panel 100 further includes a first encapsulation layer 61, which covers the second electrode 33 and a portion of the isolation structure 2. The first encapsulation layer 61 is used to protect the isolation structure 2 and the light-emitting unit. Furthermore, the first encapsulation layer 61 is an inorganic layer, which has a high density to isolate water and oxygen. Optionally, the first encapsulation layer 61 is formed by full-surface evaporation and wet etching.

[0126] Reference Figure 12As shown, in one embodiment, the display panel 100 further includes a second encapsulation layer 62 and a third encapsulation layer 63. The second encapsulation layer 62 is disposed on a side of the first encapsulation layer 61 away from the substrate 1, and the third encapsulation layer 63 is disposed on a side of the second encapsulation layer 62 away from the substrate 1. The second encapsulation layer 62 is an organic layer, thus having a large thickness to planarize the surface of the display panel 100. The third encapsulation layer 63 is an inorganic layer, thereby realizing an inorganic-organic-inorganic three-layer encapsulation.

[0127] Optionally, the material of the first encapsulation layer 61 and the third encapsulation layer 63 includes at least one of silicon nitride (SiN), silicon oxide (SiO), and silicon oxynitride (SiON). The material of the second encapsulation layer 62 is a resin material such as epoxy resin or acrylic resin. The second encapsulation layer 62 and the third encapsulation layer 63 are continuously provided at least throughout the entire display area, and a portion thereof is also provided in the frame area.

[0128] Reference Figure 13 As shown, in one embodiment, the partition structure 5 includes a first surface 53 and a second surface 54 disposed opposite each other. The first surface 53 is disposed farther from the substrate 1 relative to the second surface 54. The partition structure 5 also includes a sidewall 55 connecting the first surface 53 and the second surface 54. The angle α between the sidewall 55 and the first surface 53 is 110-130 degrees. Taking advantage of the fact that the light-emitting functional layer 32 has poor spreading properties on surfaces with special shapes, the angle α between the sidewall 55 and the first surface 53 is set to 110-130 degrees. This allows the light-emitting functional layer 32 to be isolated at the junction of the sidewall 55 and the first surface 53. This also helps shorten the distance between the isolation structure 2 and the first electrode 31, facilitating high-resolution display.

[0129] Exemplarily, the angle α between the side wall 55 and the first surface 53 is 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, etc.

[0130] Based on the same inventive concept, another embodiment of the present application discloses a display panel 100, referring to Figure 3 As shown, it includes a substrate 1, an isolation structure 2, a first electrode 31 and a partition structure 5. The isolation structure 2 is arranged on one side of the substrate 1, and the isolation structure 2 encloses an isolation opening 21; the first electrode 31 is arranged on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the first electrode 31 on the substrate 1 is at least partially located within the orthographic projection of the isolation opening 21 on the substrate 1; the partition structure 5 is located in the isolation opening 21 and is arranged in a ring shape around the first electrode 31.

[0131] Reference Figure 13As shown, the partition structure 5 includes a first surface 53 and a second surface 54 arranged opposite to each other, the first surface 53 is arranged away from the substrate 1 relative to the second surface 54, and the partition structure 5 also includes a side wall 55 connecting the first surface 53 and the second surface 54, and the angle α between the side wall 55 and the first surface 53 is 110-130 degrees.

[0132] The display panel 100 provided in this embodiment is configured such that the partition structure 5 is arranged in a ring shape within the isolation opening 21 and around the first electrode 31, and the partition structure 5 is used to separate the hole injection layer or extend the transmission path of the hole injection layer, thereby preventing the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode and enhancing the display performance of the display panel 100.

[0133] At the same time, taking advantage of the fact that the light-emitting functional layer 32 has poor spreading properties on surfaces with special shapes, the angle α between the sidewall 55 and the first surface 53 is set to 110-130 degrees, which can isolate the light-emitting functional layer 32 at the junction of the sidewall 55 and the first surface 53. At the same time, this helps to shorten the distance between the isolation structure 2 and the first electrode 31, which is conducive to achieving high-resolution display.

[0134] Reference Figure 4 and 5 As shown, in one embodiment, the partition structure 5 includes a first partition portion 51 , and the first partition portion 51 is provided on the same layer as the first electrode 31 to ensure a partition effect.

[0135] Preferably, the film structure of the first partition portion 51 is the same as that of the first electrode 31 for ease of preparation. During preparation, a first electrode material layer is first formed, and then the first electrode material layer is patterned to form the first electrode 31 and the first partition portion 51 .

[0136] Preferably, the first partition portion 51 and the first electrode 31 both include a first transparent conductive layer, a metal conductive layer, and a second transparent conductive layer stacked in sequence in a direction away from the substrate 1 .

[0137] Preferably, the material of the metal conductive layer includes Ag, and the material of the first transparent conductive layer and the second transparent conductive layer includes ITO. Metal Ag has excellent conductivity and can significantly reduce the overall resistance of the anode. The ITO layers on both sides also have a certain conductivity. Combined with the Ag layer, they can ensure that the current is efficiently transmitted in the anode, reduce energy loss and heat problems caused by resistance, and improve the power utilization efficiency of the display panel. At the same time, this structure can make the current evenly distributed over the entire anode surface, thereby ensuring the uniformity of pixel luminescence, avoiding the phenomenon of local overbrightness or overdarkness, and improving display quality. In other embodiments, the first electrode 31 can be a structure such as Ti / Al / ITO or ZnO / Ag / ZnO.

[0138] Preferably, the thickness of the first transparent conductive layer and the second transparent conductive layer is 100 Å.

[0139] Preferably, the thickness of the metal conductive layer is 1000A-1500A. Exemplarily, the thickness of the metal conductive layer is 1000A, 2000A, 3000A, 4000A, 1500A, etc., wherein 1A is equal to 0.1nm.

[0140] Reference Figure 4 and 5 As shown, in one embodiment, the display panel 100 includes a plurality of partition structures 5, which are arranged in a ring shape around the first electrode 31 and at intervals. The orthographic projections of the plurality of partition structures 5 on the substrate 1 do not overlap. The use of the plurality of partition structures 5 is conducive to improving the partition effect.

[0141] Optionally, the distances between any two adjacent partition structures 5 are equal to ensure the partition effect and facilitate preparation.

[0142] Optionally, the distance between two adjacent isolation structures 2 gradually decreases along the direction from the isolation structure 2 to the isolation opening 21 , so as to gradually improve the isolation effect along the direction from the isolation structure 2 to the isolation opening 21 and maximize the isolation effect of the multiple isolation structures 2 .

[0143] Reference Figure 6 As shown, in one embodiment, the display panel 100 further includes a pixel defining layer 4, which is disposed between the substrate 1 and the isolation structure 2. The pixel defining layer 4 defines a pixel opening that communicates with the isolation opening 21, and the pixel opening exposes the first electrode 31. As a result, the first electrode 31 can have a larger design area without contacting the isolation structure 2, thereby allowing the light-emitting unit to have a larger effective light-emitting area.

[0144] The pixel defining layer 4 determines the shape and position of the light-emitting unit and separates the first electrode 31 from the isolation structure 2 .

[0145] Preferably, the thickness of the pixel defining layer 4 is 1000A-2000A. Exemplarily, the thickness of the pixel defining layer 4 is 1000A, 1200A, 1300A, 1500A, 1600A, 1800A, 2000A, etc.

[0146] Preferably, the partition structure 5 includes a second partition portion 52 , which is disposed on a side of the first partition portion 51 away from the substrate 1 . The second partition portion 52 is disposed on the same layer as the pixel defining layer 4 to enhance the partition effect.

[0147] Preferably, the material of the second partition portion 52 is the same as that of the pixel defining layer 4 for ease of preparation. During preparation, the pixel defining material layer is first formed, and then the pixel defining material layer is patterned to form the second partition portion 52 and the pixel defining layer 4.

[0148] Reference Figure 7 As shown, in one embodiment, the display panel 100 further includes a light-emitting functional layer 32 and a second electrode 33. The light-emitting functional layer 32 is arranged in the isolation opening 21 and covers the first electrode 31 and the partition structure 5; the second electrode 33 is arranged in the isolation opening 21 and covers the light-emitting functional layer 32, and the second electrode 33 overlaps the isolation structure 2; wherein, the first electrode 31, the light-emitting functional layer 32 and the second electrode 33 constitute a light-emitting unit.

[0149] The second electrode 33 overlaps the isolation structure 2 , so that the isolation structure 2 connects the second electrode 33 , thereby making the isolation structure 2 a common electrode for easy driving.

[0150] Preferably, the first electrode 31 includes an anode, and the second electrode 33 includes a cathode. Different voltages are applied to the first electrode 31 and the second electrode 33 to form a voltage difference between the first electrode 31 and the second electrode 33, thereby driving the light-emitting functional layer 32 to emit light.

[0151] Optionally, the first electrode 31 comprises a multilayer structure, for example, comprising a reflective layer and a pair of conductive oxide layers covering the upper and lower surfaces of the reflective layer, respectively. The reflective layer can be formed using, for example, a metal material with excellent light reflectivity, such as silver. Each conductive oxide layer can be formed using, for example, a transparent conductive oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IGZO (Indium Gallium Zinc Oxide). The second electrode 33 can be formed using, for example, a metal material such as an alloy of magnesium and silver (MgAg).

[0152] Preferably, the light-emitting functional layer 32 includes a hole injection layer 321, which covers the first electrode 31 and at least part of the partition structure 5. The partition structure 5 isolates the hole injection layer 321 to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode.

[0153] Among them, the hole injection layer helps holes to be smoothly injected from the anode into the organic material, reduces the hole injection barrier, and improves the hole injection efficiency.

[0154] Furthermore, the light-emitting functional layer 32 further includes the following film layers:

[0155] Hole transport layer: responsible for transporting holes from the hole injection layer to the light-emitting layer, and is required to have good hole transport performance and high carrier mobility.

[0156] The light-emitting layer is the most important functional layer in an OLED device. When electrons and holes recombine in this layer, excitons are generated. Excitons de-excite and emit photons, thus generating light. The material and structure of the light-emitting layer determine the color and efficiency of the OLED's light.

[0157] Electron transport layer: transports electrons from the cathode to the light-emitting layer, allowing the electrons to smoothly reach the light-emitting layer and recombine with holes to emit light. It needs to have good electron transport ability and stability.

[0158] Electron injection layer: Modify the cathode to promote the injection of electrons from the cathode into the organic material, improve the electron injection efficiency, and improve the performance and efficiency of the device.

[0159] Reference Figure 7 As shown, in one embodiment, the isolation structure 2 includes a support portion 22 and a crown portion 23. The crown portion 23 is located on the side of the support portion 22 away from the substrate 1. The area of ​​the orthographic projection of the support portion 22 on the substrate 1 is smaller than the area of ​​the orthographic projection of the crown portion 23 on the substrate 1, and the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the crown portion 23 on the substrate 1. The isolation structure 2 is formed into a T-shaped structure, so that the isolation structure 2 can effectively block the light-emitting functional layer of adjacent light-emitting units, thereby reducing the current crosstalk problem of adjacent light-emitting units. Figure 8 As shown, in one embodiment, the support portion 22 includes a first support portion 221 and a second support portion 222. The first support portion 221 is located between the second support portion 222 and the substrate 1, and the orthographic projection of the second support portion 222 on the substrate 1 is located within the orthographic projection of the first support portion 221 on the substrate 1. The second electrode 33 overlaps the first support portion 221, which helps to improve the overlapping effect between the second electrode 33 and the support portion 22.

[0160] Specifically, the width of the crown 23 is greater than the width of the second support portion 222. As a result, the two ends of the crown 23 are protruded compared to the side surfaces of the second support portion 222, and this shape is also called an overhang. The second support portion 222 and the crown 23 are made of different materials, and the etching rate of the crown 23 is lower than the etching rate of the second support portion 222. The material of the second support portion 222 includes a conductive material, and specifically may include at least one of aluminum (Al) and an aluminum alloy. The aluminum alloy may include at least one of aluminum neodymium alloy (AlNd), aluminum yttrium alloy (AlY), or aluminum silicon alloy (AlSi). The crown 23 may be a single-layer structure or a multi-layer structure. When the crown 23 is a single-layer structure, the material of the crown 23 may include at least one of titanium, titanium nitride, molybdenum, tungsten, molybdenum-tungsten alloy, or molybdenum-niobium alloy. When the crown portion 23 has a multi-layer structure, one layer of the crown portion 23 may be made of at least one of titanium, titanium nitride, molybdenum, tungsten, a molybdenum-tungsten alloy, or a molybdenum-niobium alloy. Another layer of the crown portion 23 may be made of a conductive oxide or an inorganic insulating material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). The first support portion 221 may be made of at least one of molybdenum (Mo), titanium (Ti), titanium nitride (TiN), a molybdenum-tungsten alloy (MoW), or a molybdenum-niobium alloy (MoNb).

[0161] In one embodiment, the isolation openings 21 include a first isolation opening, a second isolation opening, and a third isolation opening. The first isolation opening, the second isolation opening, and the third isolation opening respectively define light-emitting units emitting light of different colors, thereby enhancing the richness of the display of the display panel 100. For example, the light-emitting units of different colors include light-emitting unit R, light-emitting unit B, and light-emitting unit G. Furthermore, the first isolation opening, the second isolation opening, and the third isolation opening can be configured as needed, and their shapes and sizes may vary, without specific limitation.

[0162] Furthermore, the pixel defining layer 4 is provided with a first pixel opening connected to the first isolation opening, a second pixel opening connected to the second isolation opening, and a third pixel opening connected to the third isolation opening. The areas of the orthographic projections of the first pixel opening, the second pixel opening, and the third pixel opening on the substrate 1 are the same or different. The shape of the pixel opening and the orthographic projection of the corresponding isolation opening 21 on the substrate 1 may be the same or different. Generally speaking, the area of ​​the orthographic projection of the isolation opening 21 on the array substrate 1 is larger than the area of ​​the orthographic projection of the pixel opening connected to the isolation opening 21 on the array substrate 1. The orthographic projection of the pixel opening on the array substrate 1 overlaps with the orthographic projection of the isolation opening 21 on the array substrate 1. The material of the pixel defining layer 4 is an inorganic material. For example, the pixel defining layer 4 is formed using an inorganic insulating material of at least one of silicon nitride (SiNx), silicon oxide (SiOx), and silicon oxynitride (SiON).

[0163] refer to Figure 9 The substrate 1 includes a pixel circuit layer and a planarization layer 11. The pixel circuit layer includes a pixel circuit for driving the light-emitting unit 3 to emit light. Figure 10 The transistor 12 in the pixel circuit is shown. A via is provided in the planarization layer 11, and the first electrode 31 is electrically connected to the transistor 12 in the pixel circuit layer through the via. Furthermore, the pixel circuit layer includes at least one insulating layer, which may include at least one of an inorganic layer and an organic layer. Furthermore, the substrate 111 also includes scan lines that provide scan signals Scan and data lines that provide data signals Data to the pixel circuit.

[0164] refer to Figure 10 The pixel circuit includes a driving transistor T1 and a data transistor T2, the source of the data transistor T2 is connected to a data line providing a data signal Data, the gate of the data transistor T2 is connected to a scan line providing a scan signal Scan, the drain of the data transistor T2 is connected to the gate of the driving transistor T1, the two ends of the storage capacitor C1 are respectively connected to the gate and source of the driving transistor T1, and the drain of the driving transistor T1 is connected to the light-emitting unit 3. Figure 10 This is an embodiment of the pixel circuit. The pixel circuit of this application is not limited to Figure 10 The 2T1C pixel circuit shown may also be other pixel circuits, such as a 7T1C, 8T1C pixel circuit, etc.

[0165] Reference Figure 11 As shown, in one embodiment, the display panel 100 further includes a first encapsulation layer 61, which covers the second electrode 33 and a portion of the isolation structure 2. The first encapsulation layer 61 is used to protect the isolation structure 2 and the light-emitting unit. Furthermore, the first encapsulation layer 61 is an inorganic layer, which has a high density to isolate water and oxygen. Optionally, the first encapsulation layer 61 is formed by full-surface evaporation and wet etching.

[0166] Reference Figure 12 As shown, in one embodiment, the display panel 100 further includes a second encapsulation layer 62 and a third encapsulation layer 63. The second encapsulation layer 62 is disposed on a side of the first encapsulation layer 61 away from the substrate 1, and the third encapsulation layer 63 is disposed on a side of the second encapsulation layer 62 away from the substrate 1. The second encapsulation layer 62 is an organic layer, thus having a large thickness to planarize the surface of the display panel 100. The third encapsulation layer 63 is an inorganic layer, thereby realizing an inorganic-organic-inorganic three-layer encapsulation.

[0167] Optionally, the material of the first encapsulation layer 61 and the third encapsulation layer 63 includes at least one of silicon nitride (SiN), silicon oxide (SiO), and silicon oxynitride (SiON). The material of the second encapsulation layer 62 is a resin material such as epoxy resin or acrylic resin. The second encapsulation layer 62 and the third encapsulation layer 63 are continuously provided at least throughout the entire display area, and a portion thereof is also provided in the frame area.

[0168] Based on the same inventive concept, Figure 14 As shown, another embodiment of the present application discloses a method for manufacturing a display panel, which includes the following steps:

[0169] Step S10: forming a first electrode 31 and a partition structure 5 on one side of the substrate 1;

[0170] Step S20: forming an isolation structure 2 on the same side of the first electrode 31 as the substrate 1; wherein the isolation structure 2 encloses an isolation opening 21, and the orthographic projection of the partition structure 5 on the substrate 1 is at least partially located between the orthographic projection of the isolation structure 2 on the substrate 1 and the orthographic projection of the first electrode 31 on the substrate 1. Figure 3 .

[0171] The method for preparing a display panel provided in this embodiment is such that a partition structure 5 is provided on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the partition structure 5 on the substrate 1 is located between the orthographic projection of the isolation structure 2 on the substrate 1 and the orthographic projection of the first electrode 31 on the substrate 1. The partition structure 5 is utilized to separate the hole injection layer or extend the transmission path of the hole injection layer to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode and enhancing the display performance of the display panel 100.

[0172] In one embodiment, the partition structure 5 includes a first partition portion 51 ; step S10, forming the first electrode 31 and the partition structure 5 on one side of the substrate 1 , includes the following steps:

[0173] Step S11, forming a first electrode layer on one side of the substrate 1;

[0174] Step S12: Patterning the first electrode layer to form the first electrode 31 and the first partition portion 51. This is beneficial for simplifying the manufacturing process.

[0175] Preferably, the first electrode layer includes a first transparent conductive layer, a metal conductive layer and a second transparent conductive layer which are sequentially stacked in a direction away from the substrate 1 .

[0176] Preferably, the material of the metal conductive layer includes Ag, and the material of the first transparent conductive layer and the second transparent conductive layer includes ITO. Metal Ag has excellent conductivity and can significantly reduce the overall resistance of the anode. The ITO layers on both sides also have a certain conductivity. Combined with the Ag layer, they can ensure that the current is efficiently transmitted in the anode, reduce energy loss and heat problems caused by resistance, and improve the power utilization efficiency of the display panel. At the same time, this structure can make the current evenly distributed over the entire anode surface, thereby ensuring the uniformity of pixel luminescence, avoiding the phenomenon of local overbrightness or overdarkness, and improving display quality. In other embodiments, the first electrode 31 can be a structure such as Ti / Al / ITO or ZnO / Ag / ZnO.

[0177] Preferably, the thickness of the first transparent conductive layer and the second transparent conductive layer is 100 Å.

[0178] Preferably, the thickness of the metal conductive layer is 1000A-1500A. Exemplarily, the thickness of the metal conductive layer is 1000A, 2000A, 3000A, 4000A, 1500A, etc., wherein 1A is equal to 0.1nm.

[0179] In one embodiment, step S10, forming a first electrode 31 and a partition structure 5 on one side of the substrate 1, includes forming the first electrode 31 and a plurality of partition structures 5 on one side of the substrate 1, wherein the plurality of partition structures 5 are arranged in a ring shape around the first electrode 31 and at intervals, and the orthographic projections of the plurality of partition structures 5 on the substrate 1 do not overlap. The use of the plurality of partition structures 5 is conducive to improving the partition effect.

[0180] Optionally, the distance between any two adjacent partition structures 5 is equal to ensure the isolation effect and facilitate manufacturing. Optionally, the distance between two adjacent isolation structures 2 gradually decreases along the direction from the isolation structure 2 to the isolation opening 21, so as to gradually improve the isolation effect along the direction from the isolation structure 2 to the isolation opening 21 and maximize the isolation effect of the multiple isolation structures 2.

[0181] In one embodiment, before forming the isolation structure 2 on the same side of the first electrode 31 as the substrate 1 in step S20, the following steps are further included:

[0182] Step 21, forming a pixel defining layer 4 on the same side of the first electrode 31 relative to the substrate 1; wherein the pixel defining layer 4 defines a pixel opening connected to the isolation opening 21, and the pixel opening exposes the first electrode 31; thereby, the first electrode 31 can have a larger design area without contacting the isolation structure 2, so that the light-emitting unit has a larger effective light-emitting area.

[0183] The pixel defining layer 4 determines the shape and position of the light-emitting unit and separates the first electrode 31 from the isolation structure 2 .

[0184] Preferably, the thickness of the pixel defining layer 4 is 1000A-2000A. Exemplarily, the thickness of the pixel defining layer 4 is 1000A, 1200A, 1300A, 1500A, 1600A, 1800A, 2000A, etc.

[0185] Preferably, the partition structure 5 includes a second partition portion 52 ; and before forming the pixel defining layer 4 on the same side of the first electrode 31 as the substrate 1 in step S21 , the step further includes:

[0186] A pixel defining material layer is formed on the same side of the first electrode 31 as the substrate 1 and on the side of the first partition portion 51 away from the substrate 1 ;

[0187] The pixel defining material layer is patterned to form a second partition portion 52 and a pixel defining layer 4. This simplifies the manufacturing process. The second partition portion 52 is disposed on the side of the first partition portion 51 away from the substrate 1. The second partition portion 52 is disposed on the same layer as the pixel defining layer 4 to enhance the isolation effect. Preferably, after forming the isolation structure 2 on the same side of the first electrode 31 relative to the substrate 1 in step S20, the following steps are further included:

[0188] Step S30: forming a light-emitting functional layer 32 in the isolation opening 21; wherein the light-emitting functional layer 32 covers the first electrode 31 and the partition structure 5;

[0189] Step S40 , forming a second electrode 33 in the isolation opening 21 ; wherein the second electrode 33 covers the light-emitting functional layer 32 , the second electrode 33 overlaps the isolation structure 2 , and the first electrode 31 , the light-emitting functional layer 32 and the second electrode 33 constitute a light-emitting unit.

[0190] The second electrode 33 overlaps the isolation structure 2 , so that the isolation structure 2 connects the second electrode 33 , thereby making the isolation structure 2 a common electrode for easy driving.

[0191] Preferably, the first electrode 31 includes an anode, and the second electrode 33 includes a cathode. Different voltages are applied to the first electrode 31 and the second electrode 33 to form a voltage difference between the first electrode 31 and the second electrode 33, thereby driving the light-emitting functional layer 32 to emit light.

[0192] Optionally, the first electrode 31 comprises a multilayer structure, for example, comprising a reflective layer and a pair of conductive oxide layers covering the upper and lower surfaces of the reflective layer, respectively. The reflective layer can be formed using, for example, a metal material with excellent light reflectivity, such as silver. Each conductive oxide layer can be formed using, for example, a transparent conductive oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IGZO (Indium Gallium Zinc Oxide). The second electrode 33 can be formed using, for example, a metal material such as an alloy of magnesium and silver (MgAg).

[0193] Preferably, the light-emitting functional layer 32 includes a hole injection layer 321, which covers the first electrode 31 and at least part of the partition structure 5. The partition structure 5 isolates the hole injection layer 321 to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the short circuit problem between the anode and the cathode.

[0194] Among them, the hole injection layer helps holes to be smoothly injected from the anode into the organic material, reduces the hole injection barrier, and improves the hole injection efficiency.

[0195] In one embodiment, step S40, forming the second electrode 33 in the isolation opening 21, further includes the following steps:

[0196] Step S50: Form a first encapsulation layer 61 on the side of the second electrode 33 and a portion of the isolation structure 2 away from the substrate 1. The first encapsulation layer 61 is used to protect the isolation structure 2 and the light-emitting unit. Furthermore, the first encapsulation layer 61 is an inorganic layer, which has a high density to isolate water and oxygen. Optionally, the first encapsulation layer 61 is formed by full-surface evaporation and wet etching.

[0197] Step S60: Form a second encapsulation layer 62 on a side of the first encapsulation layer 61 away from the substrate 1, and form a third encapsulation layer 63 on a side of the second encapsulation layer 62 away from the substrate 1. The second encapsulation layer 62 is an organic layer, thus having a relatively large thickness to planarize the surface of the display panel 100. The third encapsulation layer 63 is an inorganic layer, thus achieving an inorganic-organic-inorganic triple-layer encapsulation.

[0198] Optionally, the material of the first encapsulation layer 61 and the third encapsulation layer 63 includes at least one of silicon nitride (SiN), silicon oxide (SiO), and silicon oxynitride (SiON). The material of the second encapsulation layer 62 is a resin material such as epoxy resin or acrylic resin. The second encapsulation layer 62 and the third encapsulation layer 63 are continuously provided at least throughout the entire display area, and a portion thereof is also provided in the frame area.

[0199] The specific structure and materials of the display panel 100 prepared in the display panel preparation method of this embodiment refer to the above display panel embodiments, and have the same technical effects as the above embodiments, which will not be repeated here.

[0200] Another embodiment of the present application discloses a display module comprising the display panel 100 described in the above embodiment; or, alternatively, the display panel 100 produced using the display panel production method described in the above embodiment. The display module may include at least one film layer, such as a touch layer, a polarizer, a color filter substrate, and a protective cover. This film layer may also be bonded to the display panel 100 via an adhesive layer, such as an optical clear adhesive (OCA).

[0201] The touch layer is the core component for human-computer interaction. Through capacitive sensing or resistive pressure, it converts user touches, slides, and clicks into electrical signals, transmitting them to the control system for precise command responses. The current mainstream capacitive touch layer, with its multi-touch support and high sensitivity, is widely used in consumer electronics such as smartphones and tablets. Resistive touch layers, due to their strong anti-interference capabilities, are often used in industrial equipment and in-vehicle central control systems. The touch layer can be integrated with the display panel via external, on-cell, or in-cell methods, significantly enhancing the user interaction experience while also driving the development of thinner and more integrated display modules.

[0202] The polarizer in the display module is a key optical component that determines image quality. It controls the polarization direction of light, allowing liquid crystal molecules to rotate in an orderly manner under the action of an electric field, thereby producing light and dark contrast and realizing image display. Polarizers are composed of a multi-layer structure consisting of polyvinyl alcohol (PVA) film and triacetyl cellulose (TAC) film. The PVA film is the core polarizing layer, while the TAC film provides protection and support. Additionally, depending on the application scenario, additional layers such as reflective layers and phase difference films are added to enhance outdoor visibility or optimize viewing angles.

[0203] Among them, the protective cover (Cover Glass) in the display module is a transparent protective component covering the outermost layer of the screen. Its main function is to protect the internal organic light-emitting devices, touch layer and other precision structures from physical impact, scratches and pollution, while taking into account optical performance to ensure the display effect. Its material is usually high-hardness silicate glass, which is chemically strengthened to improve drop resistance and surface hardness. The thickness can be optimized to less than 0.3mm according to the thinness requirements of the module. The protective cover needs to be optically coated to reduce ambient light reflection, improve screen transparency, and reduce the impact of fingerprint residue; in curved screen or folding screen OLED modules, the protective cover must also have good bending properties and be formed through a hot bending process to adapt to the flexible display substrate while maintaining optical uniformity. In addition, the edge of the protective cover can be CNC processed or laser cut to achieve a 2.5D / 3D curved surface design, which enhances the grip and reduces the risk of edge bumps. It is a key component for balancing the protection of the OLED module and the user experience.

[0204] Another embodiment of the present application discloses a display device, which includes the display panel 100 in the above embodiment; or, a display panel prepared by the method for preparing the display panel in the above embodiment. The display device can be on a smart device (such as a mobile phone, VR device, computer, television, car display, etc.).

[0205] In the display device of this embodiment, in its display panel 100, a partition structure 5 is provided on the same side of the isolation structure 2 relative to the substrate 1, and the orthographic projection of the partition structure 5 on the substrate 1 is located between the orthographic projection of the isolation structure 2 on the substrate 1 and the orthographic projection of the first electrode 31 on the substrate 1. The partition structure 5 is utilized to separate the hole injection layer or extend the transmission path of the hole injection layer to prevent the first electrode 31 from being directly connected to the isolation structure 2 through the hole injection layer 321, thereby improving the problem of short circuit between the anode and the cathode, improving the display performance of the display panel 100, and improving the performance of the display device.

[0206] While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0207] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0208] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is provided on one side of the substrate, and the isolation structure encloses an isolation opening; a first electrode disposed on a same side of the isolation structure as the substrate, wherein an orthographic projection of the first electrode on the substrate is at least partially located within an orthographic projection of the isolation opening on the substrate; The partition structure is arranged on the same side of the isolation structure relative to the substrate, and the orthographic projection of the partition structure on the substrate is at least partially located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate.

2. The display panel according to claim 1, wherein The partition structure is arranged in a ring shape around the first electrode; Preferably, the partition structure includes a first partition portion, and the first partition portion is provided on the same layer as the first electrode; Preferably, the film structure of the first partition portion is the same as the film structure of the first electrode; Preferably, the first partition portion and the first electrode each include a first transparent conductive layer, a metal conductive layer, and a second transparent conductive layer sequentially stacked in a direction away from the substrate; Preferably, the material of the metal conductive layer includes Ag, and the materials of the first transparent conductive layer and the second transparent conductive layer include ITO; Preferably, the thickness of the first transparent conductive layer and the second transparent conductive layer is 100 Å, and / or the thickness of the metal conductive layer is 1000 Å-1500 Å.

3. The display panel according to claim 2, wherein: The display panel further includes: a pixel defining layer disposed between the substrate and the isolation structure, wherein the pixel defining layer defines a pixel opening communicating with the isolation opening, and the pixel opening exposes the first electrode; Preferably, the partition structure includes a second partition portion, the second partition portion is provided on a side of the first partition portion away from the substrate, and the second partition portion is provided on the same layer as the pixel defining layer; Preferably, the material of the second partition portion is the same as that of the pixel defining layer; Preferably, the pixel defining layer has a thickness of 1000 Å-2000 Å.

4. The display panel according to claim 1, wherein: The display panel comprises a plurality of partition structures, the plurality of partition structures are arranged in a ring shape around the first electrode and at intervals, and the orthographic projections of the plurality of partition structures on the substrate do not overlap; Preferably, the distance between any two adjacent partition structures is equal; or, along the direction from the isolation structure to the isolation opening, the distance between any two adjacent isolation structures gradually decreases.

5. The display panel according to claim 1, wherein The isolation structure includes a support portion and a crown portion, wherein the crown portion is located on a side of the support portion away from the substrate, the area of ​​the orthographic projection of the support portion on the substrate is smaller than the area of ​​the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate.

6. The display panel according to claim 5, wherein: The supporting portion includes a first supporting portion and a second supporting portion. The first supporting portion is located between the second supporting portion and the substrate. The orthographic projection of the second supporting portion on the substrate is located within the orthographic projection of the first supporting portion on the substrate.

7. The display panel according to claim 1, wherein: The display panel further includes: a light-emitting functional layer, disposed in the isolation opening and covering the first electrode and the partition structure; a second electrode, disposed in the isolation opening and covering the light-emitting functional layer, the second electrode overlapping the isolation structure; Wherein, the first electrode, the light-emitting functional layer and the second electrode constitute a light-emitting unit; Preferably, the first electrode comprises an anode, and the second electrode comprises a cathode; Preferably, the light-emitting functional layer includes a hole injection layer, the hole injection layer covers the first electrode and at least a portion of the partition structure, and the partition structure partitions the hole injection layer.

8. The display panel according to claim 7, wherein: The isolation openings include a first isolation opening, a second isolation opening, and a third isolation opening, and the first isolation opening, the second isolation opening, and the third isolation opening respectively define the light-emitting units with different colors of emitted light.

9. The display panel according to claim 7, wherein: The display panel further includes a first encapsulation layer, wherein the first encapsulation layer covers the second electrode and a portion of the isolation structure; Preferably, the display panel further comprises a second encapsulation layer and a third encapsulation layer, the second encapsulation layer is arranged on a side of the first encapsulation layer away from the substrate, and the third encapsulation layer is arranged on a side of the second encapsulation layer away from the substrate; Preferably, the first encapsulation layer comprises an inorganic material, the second encapsulation layer comprises an organic material, and the third encapsulation layer comprises an inorganic material.

10. The display panel according to claim 1, wherein The partition structure includes a first surface and a second surface arranged opposite to each other, the first surface is arranged away from the substrate relative to the second surface, and the partition structure also includes a side wall connecting the first surface and the second surface, and the angle between the side wall and the first surface is 110-130 degrees.

11. A display panel, characterized in that: include: substrate; An isolation structure is provided on one side of the substrate, and the isolation structure encloses an isolation opening; a first electrode disposed on a same side of the isolation structure as the substrate, wherein an orthographic projection of the first electrode on the substrate is at least partially located within an orthographic projection of the isolation opening on the substrate; a partition structure, located in the isolation opening and arranged in a ring shape around the first electrode; The partition structure includes a first surface and a second surface arranged opposite to each other, the first surface is arranged away from the substrate relative to the second surface, and the partition structure also includes a side wall connecting the first surface and the second surface, and the angle between the side wall and the first surface is 110-130 degrees.

12. A method for preparing a display panel, characterized in that: include: forming a first electrode and a partition structure on one side of the substrate; An isolation structure is formed on the same side of the first electrode relative to the substrate; wherein the isolation structure encloses an isolation opening, and the orthographic projection of the partition structure on the substrate is at least partially located between the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate.

13. The method for manufacturing a display panel according to claim 12, wherein: The partition structure includes a first partition portion; the first electrode and the partition structure are formed on one side of the substrate, including: forming a first electrode layer on one side of the substrate; The first electrode layer is patterned to form the first electrode and the first partition portion.

14. The method for manufacturing a display panel according to claim 13, wherein: Before forming the isolation structure on the same side of the first electrode as the substrate, the method further includes: forming a pixel defining layer on the same side of the first electrode as the substrate; wherein the pixel defining layer defines a pixel opening communicating with the isolation opening, the pixel opening exposing the first electrode; Preferably, the partition structure includes a second partition portion; and before forming the pixel defining layer on the same side of the first electrode as the substrate, the method further includes: forming a pixel defining material layer on the same side of the first electrode as that of the substrate and on the side of the first partition portion away from the substrate; patterning the pixel defining material layer to form the second partition portion and the pixel defining layer; Preferably, after forming the isolation structure on the same side of the first electrode relative to the substrate, the method further comprises: forming a light-emitting functional layer in the isolation opening; wherein the light-emitting functional layer covers the first electrode and the partition structure; A second electrode is formed in the isolation opening; wherein the second electrode covers the light-emitting functional layer, the second electrode overlaps the isolation structure, and the first electrode, the light-emitting functional layer and the second electrode constitute a light-emitting unit.

15. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 11; or a display panel prepared by the method for preparing a display panel according to any one of claims 12 to 14.

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