Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, an isolation structure, a light-emitting layer and a first electrode layer. The isolation structure comprises a first layer and a second layer located on the side, away from the substrate, of the first layer, and the two sides of the second layer protrude towards the isolation opening compared with the first layer. The light-emitting structures and the isolation structures are arranged at intervals so as to solve the problem that electric connection between the light-emitting structures and the isolation structures causes electric leakage of the light-emitting structures through the isolation structures. The first width is smaller than the second width, and the second width is larger, that is, the first layer located on the other side of the light-emitting structure in the first direction shrinks more inwards than the second layer, so that the light-emitting structure is difficult to overlap with the first layer after being prepared, and the electric connection between the light-emitting structure and the isolation structure is improved; therefore, the problems of electric leakage of the light-emitting structure through the isolation structure and the like are solved, and the display effect and the use performance of the display panel are improved.

Description

Technical Field

[0001] This application relates to the field of displays, specifically to a display panel, its manufacturing method, and a display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] In traditional display panel manufacturing, a fine metal mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also suffers from limitations in precision, high development costs, and long development cycles. Fine metal mask-less technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance aspects, offering advantages such as high performance, full-size display, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A describe relevant content regarding fine metal mask-less technology and are provided for reference.

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

[0005] This application provides a display panel, a method for manufacturing the same, and a display device, aiming to improve the performance of OLED display products.

[0006] A first aspect of this application provides a display panel, comprising: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing an isolation opening, the isolation structure including a first layer and a second layer located on the side of the first layer away from the substrate, the two sides of the second layer protruding towards the isolation opening relative to the first layer, the second layer including a protrusion protruding towards the isolation opening relative to the first layer, the width of the protrusion being an extension width along the direction from the protrusion to the isolation opening; and a light-emitting unit located on one side of the substrate, the light-emitting unit including a light-emitting structure at least partially located in the isolation opening, the light-emitting structure being spaced apart from the isolation structure, the extension width of the light-emitting structure corresponding to the isolation structure on one side in a first direction being a first width, and the extension width corresponding to the isolation structure on the other side in the first direction being a second width, the first width being less than the second width.

[0007] According to an embodiment of the first aspect of this application, the extension width corresponding to the isolation structure on one side of the light-emitting structure in the second direction is a third width, the third width is greater than the first width, and the first direction and the second direction intersect.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the third width is 1μm to 2μm.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the extension width corresponding to the isolation structure on the other side of the light-emitting structure in the second direction is a fourth width, which is greater than the first width.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the fourth width is 1μm to 2μm.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the first width is 0.5μm to 1μm.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the second width is 1μm to 2μm.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting unit further includes a first electrode located on the side of the light-emitting structure close to the substrate and a second electrode located on the side of the light-emitting structure away from the substrate, wherein the second electrode is electrically connected to the isolation structure.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is electrically connected to the isolation structure on one side in the first direction.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the isolation structure on the other side of the first direction.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the isolation structure on one side in the second direction.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the isolation structure on the other side in the second direction.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further includes a third layer located on the side of the first layer facing the substrate, at least one side of the third layer protruding from the first layer towards the isolation opening, and the isolation structure and the third layer are electrically connected.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the third layer includes a first portion and a second portion. The orthographic projection of the first portion onto the substrate is located within the orthographic projection of the first layer onto the substrate, and the orthographic projection of the second portion onto the substrate is located outside the orthographic projection of the first layer onto the substrate. The second electrode is electrically connected to the second portion.

[0020] According to any of the foregoing embodiments of the first aspect of this application, the sidewall of the first layer facing the isolation opening is spaced apart from the sidewall of the first portion facing the isolation opening.

[0021] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is electrically connected to the third layer on one side in the first direction.

[0022] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the third layer on the other side of the first direction.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the third layer on one side in the second direction.

[0024] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is spaced apart from the third layer on the other side of the second direction.

[0025] According to any of the foregoing embodiments of the first aspect of this application, the second portion is located on one side of the first portion in the first direction.

[0026] According to any of the foregoing embodiments of the first aspect of this application, within the same isolation opening, the light-emitting structure is provided with a second portion on one side in the first direction.

[0027] According to any of the foregoing embodiments of the first aspect of this application, in each third layer, the second portion is located on the same side of the first portion in the first direction.

[0028] According to any of the foregoing embodiments of the first aspect of this application, the second electrode has a first end and a second end disposed opposite to each other in a first direction, the first end is in contact with the isolation structure, the second end is spaced apart from the isolation structure, the distance between the first end and the substrate is a first distance, the distance between the second end and the substrate is a second distance, and the first distance is greater than or equal to the second distance.

[0029] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the first end on the substrate is located outside the orthographic projection of the light-emitting unit on the substrate.

[0030] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the second end onto the substrate is located within the orthographic projection of the light-emitting unit onto the substrate.

[0031] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes: a pixel definition layer located on one side of the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening and the isolation opening being connected.

[0032] According to any of the foregoing embodiments of the first aspect of this application, the pixel opening includes a first edge and a second edge disposed opposite to each other in a first direction, and the light-emitting structure includes a third edge and a fourth edge disposed opposite to each other in a first direction. The first edge and the third edge are located on the same side, the second edge and the fourth edge are located on the same side, the distance between the first edge and the third edge in the first direction is a first distance, and the distance between the second edge and the fourth edge in the first direction is a second distance. The first distance is less than the second distance.

[0033] A second aspect of this application provides a display panel, comprising: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing an isolation opening, the isolation structure including a first layer, a second layer located on the side of the first layer facing away from the substrate, and a third layer located on the side of the first layer facing the substrate, the two sides of the second layer protruding towards the isolation opening compared to the first layer, the third layer including a first portion and a second portion, the orthographic projection of the first portion onto the substrate being within the orthographic projection of the first layer onto the substrate, the orthographic projection of the second portion onto the substrate being outside the orthographic projection of the first layer onto the substrate, the second layer including a protrusion protruding towards the isolation opening compared to the first layer, the width of the protrusion being an extension width along the direction of the protrusion pointing towards the isolation opening; and a light-emitting unit located on one side of the substrate, the light-emitting unit including a light-emitting structure at least partially located in the isolation opening, the light-emitting structure being spaced apart from the isolation structure, the extension width of the light-emitting structure corresponding to the isolation structure on one side in a first direction being a first width, the extension width corresponding to the isolation structure on the other side in the first direction being a second width, the first width being less than the second width; the extension width of the light-emitting structure corresponding to the isolation structure on one side in a second direction being a third width, the third width being greater than the first width, the first direction and the second direction intersecting.

[0034] According to the second aspect of the present application, the extension width corresponding to the isolation structure on the other side of the light-emitting structure in the second direction is a fourth width, which is greater than the first width.

[0035] According to any of the foregoing embodiments of the second aspect of this application, the fourth width is 1μm to 2μm.

[0036] According to any of the foregoing embodiments of the second aspect of this application, the display panel further includes: a pixel definition layer located on one side of the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening and the isolation opening being connected.

[0037] According to any of the foregoing embodiments of the second aspect of this application, the pixel opening includes a first edge and a second edge disposed opposite to each other in a first direction, and the light-emitting structure includes a third edge and a fourth edge disposed opposite to each other in a first direction. The first edge and the third edge are located on the same side, the second edge and the fourth edge are located on the same side, the distance between the first edge and the third edge in the first direction is a first distance, and the distance between the second edge and the fourth edge in the first direction is a second distance. The first distance is less than the second distance.

[0038] An embodiment of the third aspect of this application provides a method for manufacturing a display panel, comprising: An isolation structure is fabricated on a substrate. The isolation structure encloses and forms an isolation opening. The isolation structure includes a first layer and a second layer located on the side of the first layer away from the substrate. The orthographic projection of the first layer on the substrate is located within the orthographic projection of the second layer on the substrate. The second layer includes a protrusion that protrudes toward the isolation opening relative to the first layer. The width of the protrusion is the extension width along the direction from the protrusion toward the isolation opening. A light-emitting structure is fabricated on a substrate, at least part of which is located in the light-emitting structure of the isolation opening. The light-emitting structure is spaced apart from the isolation structure. The extension width of the light-emitting structure on one side of the isolation structure in a first direction is a first width, and the extension width of the light-emitting structure on the other side of the isolation structure in the first direction is a second width. The first width is smaller than the second width.

[0039] According to an embodiment of the third aspect of this application, the step of fabricating an isolation structure on a substrate includes: A first isolation material layer is prepared on a substrate, and the first isolation material layer is patterned to form a third layer; A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer away from the substrate, and the second isolation material layer and the third isolation material layer are patterned to form a first layer and a second layer. The second layer is located on the side of the first layer away from the substrate, and the third layer is located on the side of the first layer facing the substrate. The orthographic projection of the first layer on the substrate is within the orthographic projection of the second layer on the substrate, and part of the orthographic projection of the third layer on the substrate is outside the orthographic projection of the first layer on the substrate.

[0040] According to any of the foregoing embodiments of the third aspect of this application, the method for forming a third layer by fabricating a first insulating material layer on a substrate and patterning the first insulating material layer includes: A first insulating material layer is prepared on the substrate; A first barrier material layer is prepared on the side of the first isolation material layer away from the substrate, and the first barrier material layer is patterned using a first mask to form the first barrier layer. The first barrier layer is used to pattern the first isolation material layer to form the third layer.

[0041] According to any of the foregoing embodiments of the third aspect of this application, the orthographic projection of a portion of the third layer on the substrate is located outside the orthographic projection of the first layer on the substrate, and the isolation structure and the third layer are electrically connected.

[0042] According to any of the foregoing embodiments of the third aspect of this application, the third layer includes a first portion and a second portion, wherein the orthographic projection of the first portion onto the substrate is located within the orthographic projection of the first layer onto the substrate, and the orthographic projection of the second portion onto the substrate is located outside the orthographic projection of the first layer onto the substrate.

[0043] According to any of the foregoing embodiments of the third aspect of this application, in the step of sequentially preparing a second isolation material layer and a third isolation material layer on the side of the third layer away from the substrate, and patterning the second isolation material layer and the third isolation material layer to form the first layer and the second layer, the method includes: A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer away from the substrate; Dry etching is performed on the second and third isolation material layers to remove a portion of the second and third isolation material layers; The second isolation material layer is wet-etched to remove part of the second isolation material layer; A second barrier material layer is prepared on the side of the third isolation material layer away from the substrate, and the second barrier material layer is patterned using a second mask to form a second barrier layer. The orthogonal projection of the second portion onto the substrate is located within the orthogonal projection of the second barrier layer onto the substrate. The second barrier layer is used to pattern the second isolation material layer to form the first layer and the second layer.

[0044] According to any of the foregoing embodiments of the third aspect of this application, the first mask and the second mask are identical.

[0045] An embodiment of the fourth aspect of this application provides a display device, which includes a display panel of any of the above embodiments or a display panel prepared by the preparation method of the display panel of any of the above embodiments.

[0046] According to an embodiment of this application, the display panel includes a substrate, an isolation structure, a light-emitting layer, and a first electrode layer. The isolation structure includes a first layer and a second layer located on the side of the first layer facing away from the substrate. The two sides of the second layer protrude towards the isolation opening compared to the first layer. When the light-emitting material is fabricated, a significant drop occurs at the edge of the isolation structure, making it difficult for the light-emitting material to connect at the edge, resulting in breakage. This breakage forms mutually disconnected light-emitting structures, thereby reducing crosstalk between charge carriers and improving the display effect of the display panel. Furthermore, the fabrication of the light-emitting structure does not require a precision mask, reducing the development and use of precision masks and lowering manufacturing costs. The light-emitting structure and the isolation structure are spaced apart to improve the electrical connection between them, preventing problems such as leakage through the isolation structure. The first width is smaller than the second width, and the second width is set to be larger. That is, the first layer located on the other side of the light-emitting structure in the first direction is more recessed than the second layer, making it difficult for the light-emitting structure to overlap with the first layer after it is formed. This improves the electrical connection between the light-emitting structure and the isolation structure, preventing problems such as leakage of the light-emitting structure through the isolation structure, thereby improving the display effect and performance of the display panel. Attached Figure Description

[0047] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0048] Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the cross section at point BB; Figure 3 A partial cross-sectional view of a display panel is provided in an embodiment of this application; Figure 4 This is a partial cross-sectional view of the display panel in another embodiment; Figure 5 This is a top view of the display panel in another embodiment; Figure 6 This is a partial cross-sectional view of the display panel in yet another embodiment; Figure 7 This is a partial cross-sectional view of the display panel in another embodiment; Figure 8 This is a partial cross-sectional view of the display panel in another embodiment; Figure 9 This is a partial cross-sectional view of the display panel in another embodiment; Figure 10This is a schematic diagram of a pixel circuit provided in an embodiment of this application; Figure 11 This is a flowchart of a method for manufacturing a display panel provided in an embodiment of this application.

[0049] Explanation of reference numerals in the attached figures: 10. Display panel; 100. Substrate; 200. Isolation structure; 210. First layer; 220. Second layer; 230. Third layer; 231. First section; 232. Second section; 240. Isolation opening; 300, Light-emitting unit; 310, First electrode; 320, Second electrode; 321, First end; 322, Second end; 330, Light-emitting structure; 331, Third edge; 332, Fourth edge; 400, Pixel definition layer; 410, Pixel limiting part; 420, Pixel opening; 421, First edge; 422, Second edge; 500, pixel circuit; H1, first altitude; H2, second altitude; L1, first distance; L2, second distance; D1, first width; D2, second width; D3, third width; D4, fourth width; X, the first direction; Y, the second direction. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0052] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. It should be noted that, unless otherwise specified, different features in the embodiments of this application can be combined with each other.

[0053] For ease of understanding, the accompanying drawings show mutually orthogonal X-axis and Y-axis. The direction along the X-axis is referred to as the X-direction, and the direction along the Y-axis is referred to as the Y-direction. Furthermore, the view of various elements observed parallel to a plane containing the X and Y directions is called a top view. Alternatively, the plane containing the X and Y directions can be a plane parallel to the display surface of the display panel.

[0054] For certain elements, terms like "above" or "overhead" are sometimes used when describing the position of an element in the Z direction, and "below" or "under" are used when describing the position of an element in the opposite direction. Furthermore, when using terms like "above," "overhead," "below," "under," or "relative" to define the positional relationship between two elements, this includes not only the state where the two elements are directly adjacent, but also the state where the two elements are separated by gaps or other elements. Additionally, terms like "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0055] This application provides a display panel, a method for manufacturing the same, and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel, its manufacturing method, and the display device.

[0056] This application provides a display panel, which may be an organic light-emitting diode (OLED) display panel.

[0057] The display panel can be an organic light-emitting diode (OLED) display panel or a quantum dot light-emitting diode (QLED) display panel.

[0058] Please see Figure 1 , Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of this application.

[0059] like Figure 1 As shown, the display panel 10 includes a display area AA with display function and a non-display area NA.

[0060] The display area of ​​the display panel 10 can be rectangular, or it can be a square, a circle, an oval, or other shapes.

[0061] The display area includes a plurality of pixels arranged in a first direction X and a second direction Y. Each pixel includes a plurality of sub-pixels that display different colors. In some embodiments, a pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; for example, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a red sub-pixel. In some embodiments, in addition to including a first sub-pixel, a second sub-pixel, and a third sub-pixel, a pixel also includes a sub-pixel that emits white or other colored light.

[0062] A subpixel includes a pixel circuit and a light-emitting unit driven by the pixel circuit to emit light of the corresponding color. A first subpixel includes a first light-emitting unit, a second subpixel includes a second light-emitting unit, and a third subpixel includes a third light-emitting unit. One pixel circuit drives at least one light-emitting unit 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 having light-transmitting properties, while 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.

[0063] Please see Figure 1 and Figure 2 , Figure 2 yes Figure 1 Schematic diagram of cross-section at point BB.

[0064] like Figure 1 and Figure 2 As shown, a first aspect embodiment of this application provides a display panel 10, which includes: a substrate 100; and an isolation structure 200 located on one side of the substrate 100. The isolation structure 200 encloses an isolation opening 240. The isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 facing away from the substrate 100. Both sides of the second layer 220 protrude toward the isolation opening 240 relative to the first layer 210. The second layer 220 includes protrusions that protrude toward the isolation opening 240 relative to the first layer 210. In the direction of the protrusion pointing towards the isolation opening 240, the width of the protrusion is the extension width; the light-emitting unit 300 is located on one side of the substrate 100, and the light-emitting unit 300 includes a light-emitting structure 330 located at least partially in the isolation opening 240. The light-emitting structure 330 is spaced apart from the isolation structure 200. The extension width of the light-emitting structure 330 corresponding to the isolation structure 200 on one side in the first direction X is the first width D1, and the extension width corresponding to the isolation structure 200 on the other side in the first direction X is the second width D2. The first width D1 is smaller than the second width D2.

[0065] According to an embodiment of this application, the display panel 10 includes a substrate 100, an isolation structure 200, a light-emitting layer, and a first electrode 310 layer. The isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 facing away from the substrate 100. The two sides of the second layer 220 protrude towards the isolation opening 240 compared to the first layer 210. When the light-emitting material is fabricated, a large drop occurs at the edge of the isolation structure 200, making it difficult for the light-emitting material to connect at the edge, resulting in breakage. This breakage forms mutually disconnected light-emitting structures 330, thereby reducing crosstalk between charge carriers in the light-emitting structures 330, improving the display effect of the display panel 10. Furthermore, fabricating the light-emitting structure 330 does not require a precision mask, reducing the development and use of precision masks and lowering manufacturing costs. The light-emitting structure 330 and the isolation structure 200 are spaced apart to improve the electrical connection between them, preventing problems such as leakage through the isolation structure 200. The first width D1 is smaller than the second width D2, and the second width D2 is set to be larger. That is, the first layer 210 on the other side of the light-emitting structure 330 in the first direction X is more recessed than the second layer 220. This makes it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed. This improves the electrical connection between the light-emitting structure 330 and the isolation structure 200, preventing problems such as leakage of the light-emitting structure 330 through the isolation structure 200. This improves the display effect and performance of the display panel 10.

[0066] In some optional embodiments, the light-emitting unit 300 further includes a first electrode 310 located on the side of the light-emitting structure 330 near the substrate 100 and a second electrode 320 located on the side of the light-emitting structure 330 away from the substrate 100, the second electrode 320 being electrically connected to the isolation structure 200.

[0067] In these optional embodiments, the isolation structure 200 separates the electrode material to form a plurality of spaced second electrodes 320. The spaced second electrodes 320 are electrically connected through the isolation structure 200 to form a full-surface electrode, ensuring the normal light emission of the light-emitting structure 330.

[0068] The first electrode 310 can be an anode, and the second electrode 320 can be a cathode. The first electrode 310 of each light-emitting unit 300 can be connected to the pixel circuit 500 through a via, so that the pixel circuit 500 drives the light-emitting device to emit light.

[0069] The light-emitting structure 330 is spaced apart from the isolation structure 200, which can prevent the light-emitting unit 300 from being electrically connected to the isolation structure 200. This would prevent the formation of a leakage path between the first electrode 310 corresponding to the light-emitting unit 300, the light-emitting structure 330, and the isolation structure 200. In low brightness, some current will flow through this leakage path, resulting in poor image quality in low brightness. This improves the display effect and performance of the display panel 10.

[0070] Optionally, the second electrode 320 is electrically connected to the isolation structure 200 on one side in the first direction X, so as to enable power supply to the second electrode 320 through the isolation structure 200.

[0071] In some alternative embodiments, the second electrode 320 is spaced apart from the isolation structure 200 on the other side in the first direction X.

[0072] In these optional embodiments, the second electrode 320 overlaps with the isolation structure 200 on one side in the first direction X, and is spaced apart from the isolation structure 200 on the other side in the first direction X. That is, the second electrode 320 overlaps with the isolation structure 200 on only one side in the first direction X, which can improve the overlap effect between the second electrode 320 and the isolation structure 200 on one side in the first direction X. In order to achieve the single-sided overlap of the second electrode 320 with the isolation structure 200 in the first direction X, when fabricating the second electrode 320, the vapor deposition source corresponding to the second electrode 320 is rotated so that the vapor deposition source is biased towards one side in the first direction X for vapor deposition, thereby achieving the offset of the second electrode 320 in the first direction X and overlapping with the isolation structure 200 on one side in the first direction X.

[0073] Here, one side and the other side of the first direction X can be understood as the left and right sides of the first direction X. For example, one side of the second electrode 320 in the first direction X is the left side of the second electrode 320 in the first direction X, and the other side of the second electrode 320 in the first direction X is the right side of the second electrode 320 in the first direction X.

[0074] Optionally, the second electrode 320 is electrically connected to the isolation structure 200 on one side in the first direction X, and the second electrode 320 is spaced apart from the isolation structure 200 on the other side in the first direction X. In this case, the first width D1 is smaller than the second width D2, that is, the first layer 210 on the non-overlapping side of the second electrode 320 is more recessed than the second layer 220, making it difficult for the light-emitting structure 330 to overlap with the first layer 210 on the other side in the first direction X after it is formed, thus improving the electrical connection between the light-emitting structure 330 and the isolation structure 200, and causing problems such as leakage of the light-emitting structure 330 through the isolation structure 200.

[0075] Optionally, the second electrode 320 is spaced apart from the isolation structure 200 on one side in the second direction Y. Since the evaporation range of the second electrode 320 is larger than the evaporation range of the light-emitting structure 330, when the second electrode 320 is spaced apart from the isolation structure 200 on one side in the second direction Y, the light-emitting structure 330 is also spaced apart from the isolation structure 200 on one side in the second direction Y, so as to avoid the light-emitting structure 330 overlapping with the isolation structure 200 on one side in the second direction Y.

[0076] Optionally, the second electrode 320 is spaced apart from the isolation structure 200 on the other side of the second direction Y. Since the evaporation range of the second electrode 320 is larger than the evaporation range of the light-emitting structure 330, when the second electrode 320 is spaced apart from the isolation structure 200 on the other side of the second direction Y, the light-emitting structure 330 is also spaced apart from the isolation structure 200 on the other side of the second direction Y, so as to avoid the light-emitting structure 330 overlapping with the isolation structure 200 on the other side of the second direction Y.

[0077] Here, one side and the other side of the second direction Y can be understood as the upper side and the lower side of the second direction Y. For example, one side of the second electrode 320 in the second direction Y is the upper side of the second electrode 320 in the second direction Y, and the other side of the second electrode 320 in the second direction Y is the lower side of the second electrode 320 in the second direction Y.

[0078] Please see Figure 3 , Figure 3 A partial cross-sectional view of a display panel is provided in an embodiment of this application.

[0079] like Figure 3 As shown, in some optional embodiments, the extension width of the isolation structure 200 on the side of the light-emitting structure 330 in the second direction Y is the third width D3, which is greater than the first width D1, and the first direction X and the second direction Y intersect.

[0080] In these optional embodiments, the third width D3 is greater than the first width D1. The larger third width D3 means that the first layer 210 on the side of the light-emitting structure 330 in the second direction Y is more recessed than the second layer 220, making it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed. This improves the electrical connection between the light-emitting structure 330 and the isolation structure 200, and prevents problems such as leakage of the light-emitting structure 330 through the isolation structure 200.

[0081] In some optional embodiments, the third width D3 is 1 μm to 2 μm. For example, the third width D3 is 1 μm, 1.2 μm, 1.5 μm, 2 μm, etc.

[0082] In these optional embodiments, a third width D3 greater than or equal to 1 μm can mitigate the problem that when the third width D3 is too small, the first layer 210 on the Y-side of the light-emitting structure 330 is less recessed than the second layer 220, making it easy for the light-emitting structure 330 to overlap with the first layer 210 after fabrication, leading to leakage and other defects through the isolation structure 200. Conversely, a third width D3 less than or equal to 2 μm can mitigate the problem that when the third width D3 is too large, the protrusion extends too wide, resulting in insufficient support of the first layer 210 for the second layer 220, and the protrusion easily collapses towards the substrate 100.

[0083] In some optional embodiments, the extension width of the light-emitting structure 330 corresponding to the isolation structure 200 on the other side of the second direction Y is a fourth width D4, which is greater than the first width D1.

[0084] In these optional embodiments, the fourth width D4 is greater than the first width D1. The larger fourth width D4 means that the first layer 210 on the other side of the light-emitting structure 330 in the second direction Y is more recessed than the second layer 220, making it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed. This improves the electrical connection between the light-emitting structure 330 and the isolation structure 200, and prevents problems such as leakage of the light-emitting structure 330 through the isolation structure 200.

[0085] In some optional embodiments, the fourth width D4 is 1 μm to 2 μm. For example, the fourth width D4 is 1 μm, 1.2 μm, 1.5 μm, 2 μm, etc.

[0086] In these optional embodiments, a fourth width D4 greater than or equal to 1 μm can mitigate the problem that when the fourth width D4 is too small, the first layer 210 on the other side of the light-emitting structure 330 in the second direction Y is less recessed than the second layer 220, causing the light-emitting structure 330 to easily overlap with the first layer 210 after fabrication, resulting in leakage and other defects through the isolation structure 200. A fourth width D4 less than or equal to 2 μm can mitigate the problem that when the fourth width D4 is too large, the protrusion's extension width is too large, resulting in insufficient support of the first layer 210 for the second layer 220, and the protrusion easily collapsing towards the substrate 100.

[0087] like Figure 2 As shown, in some optional embodiments, the first width D1 is 0.5μm to 1μm. For example, the first width D1 is 0.5μm, 0.6μm, 0.7μm, 1μm, etc.

[0088] In these optional embodiments, a first width D1 greater than or equal to 0.5 μm can improve the problem that when the first width D1 is too small, the first layer 210 on the first direction X side of the light-emitting structure 330 is less recessed than the second layer 220, resulting in poor isolation effect of the isolation structure 200. Furthermore, the light-emitting structure 330 is prone to overlap with the second layer 220 after fabrication, leading to leakage and other defects through the isolation structure 200. Conversely, when the first width D1 is too large, the first layer 210 on the first direction X side of the light-emitting structure 330 is more recessed than the second layer 220, making it difficult for the second electrode 320 to overlap with the first layer 210 on the first direction X side.

[0089] In some optional embodiments, the second width D2 is 1 μm to 2 μm. For example, the second width D2 is 1 μm, 1.2 μm, 1.5 μm, 2 μm, etc.

[0090] In these optional embodiments, a second width D2 greater than or equal to 1 μm can mitigate the problem that when the second width D2 is too small, the first layer 210 on the other side of the light-emitting structure 330 in the first direction X is less recessed than the second layer 220, causing the light-emitting structure 330 to easily overlap with the first layer 210 after fabrication, resulting in leakage and other defects through the isolation structure 200. Conversely, a second width D2 less than or equal to 2 μm can mitigate the problem that when the second width D2 is too large, the protrusion's extension width is too large, resulting in insufficient support of the first layer 210 for the second layer 220, and the protrusion easily collapsing towards the substrate 100.

[0091] Please see Figure 4 and Figure 5 , Figure 4 This is a partial cross-sectional view of the display panel in another embodiment; Figure 5 This is a top view of the display panel in another embodiment.

[0092] like Figure 4 and Figure 5 As shown, in some optional embodiments, the isolation structure 200 further includes a third layer 230 located on the side of the first layer 210 facing the substrate 100, at least one side of the third layer 230 protruding from the first layer 210 toward the isolation opening 240, and the isolation structure 200 and the third layer 230 are electrically connected.

[0093] In these alternative embodiments, a portion of the third layer 230 protrudes toward the isolation opening 240 relative to the first layer 210, allowing the second electrode 320 to overlap with the protruding portion of the third layer 230, thereby achieving an electrical connection between the second electrode 320 and the isolation structure 200.

[0094] Optionally, the third layer 230 is configured to protrude toward the isolation opening 240 on one side in the first direction X.

[0095] Optionally, the third layer 230 includes a first portion 231 and a second portion 232. The orthographic projection of the first portion 231 onto the substrate 100 is located within the orthographic projection of the first layer 210 onto the substrate 100. The orthographic projection of the second portion 232 onto the substrate 100 is located outside the orthographic projection of the first layer 210 onto the substrate 100. The second electrode 320 is electrically connected to the second portion 232, thereby realizing the electrical connection between the first electrode 310 and the isolation structure 200.

[0096] In some alternative embodiments, the sidewall of the first layer 210 facing the isolation opening 240 is spaced apart from the sidewall of the first portion 231 facing the isolation opening 240.

[0097] In these alternative embodiments, the interval serves as a physical buffer to ensure that there is no direct contact between the first layer 210 and the first portion 231 of the third layer 230, thus avoiding leakage paths caused by contact between the light-emitting structure 330 and the first portion 231 due to process errors.

[0098] Optionally, the second electrode 320 is electrically connected to the third layer 230 on one side in the first direction X, so as to realize the electrical connection between the second electrode 320 and the isolation structure 200.

[0099] In some alternative embodiments, the second electrode 320 is spaced apart from the third layer 230 on the other side in the first direction X.

[0100] In these optional embodiments, the second electrode 320 overlaps with the third layer 230 on one side in the first direction X, and is spaced apart from the third layer 230 on the other side in the first direction X. That is, the second electrode 320 overlaps with the isolation structure 200 on one side in the first direction X, which can improve the overlap effect between the second electrode 320 and the isolation structure 200 on one side in the first direction X.

[0101] Optionally, the second electrode 320 is electrically connected to the third layer 230 on one side in the first direction X, and the second electrode 320 is spaced apart from the third layer 230 on the other side in the first direction X.

[0102] Please see Figure 6 , Figure 6 This is a partial cross-sectional view of the display panel in yet another embodiment.

[0103] like Figure 6As shown, optionally, the second electrode 320 is spaced apart from the third layer 230 on one side in the second direction Y. Since the evaporation range of the second electrode 320 is larger than the evaporation range of the light-emitting structure 330, when the second electrode 320 is spaced apart from the third layer 230 on one side in the second direction Y, the light-emitting structure 330 is also spaced apart from the third layer 230 on one side in the second direction Y, so as to avoid the light-emitting structure 330 overlapping with the third layer 230 on one side in the second direction Y.

[0104] Optionally, the second electrode 320 is spaced apart from the third layer 230 on the other side of the second direction Y. Since the evaporation range of the second electrode 320 is larger than the evaporation range of the light-emitting structure 330, when the second electrode 320 is spaced apart from the third layer 230 on the other side of the second direction Y, the light-emitting structure 330 is also spaced apart from the third layer 230 on the other side of the second direction Y, so as to avoid the light-emitting structure 330 overlapping with the third layer 230 on the other side of the second direction Y.

[0105] Optionally, the second portion 232 is located on one side of the first portion 231 in the first direction X, such that the second electrode 320 overlaps with the second portion 232 on one side in the first direction X, thereby realizing the electrical connection between the second electrode 320 and the isolation structure 200 on one side in the first direction X.

[0106] like Figure 4 and Figure 5 As shown, in some optional embodiments, within the same isolation opening 240, the light-emitting structure 330 has a second portion 232 on one side in the first direction X.

[0107] In these optional embodiments, the second portion 232 is only provided on one side of the light-emitting structure 330 in the first direction X, and the second portion 232 is not provided on the other side of the light-emitting structure 330 in the first direction X or on both sides in the second direction Y. This allows the second electrode 320 to overlap with the second portion 232 on one side of the first direction X, while the light-emitting structure 330 is spaced apart from the second portion 232. In the location where the second portion 232 is not provided, even if it is more difficult for the light-emitting structure 330 to overlap with the isolation structure 200, no leakage path will be formed. Optionally, the second portion 232 is not provided on the other side of the light-emitting structure 330 in the first direction X or on both sides in the second direction Y, so that the light-emitting structure 330 will not overlap with the third layer 230 on the other side of the first direction X or on both sides in the second direction Y, thus preventing the formation of a leakage path.

[0108] In some alternative embodiments, in each third layer 230, the second portion 232 is located on the same side of the first portion 231 in the first direction X.

[0109] In these optional embodiments, when the second portions 232 are all located on the same side of the first portion 231 in the first direction X, the second electrodes 320 are vapor-deposited in the same vapor deposition direction, and each second electrode 320 can overlap with the second portion 232 on the same side to realize the electrical connection between the second electrode 320 and the isolation structure 200.

[0110] Please see Figure 7 , Figure 7 This is a partial cross-sectional view of the display panel in another embodiment.

[0111] like Figure 7 As shown, in some optional embodiments, the second electrode 320 has a first end 321 and a second end 322 disposed opposite to each other in a first direction X. The first end 321 is in contact with the isolation structure 200, and the second end 322 is spaced apart from the isolation structure 200. The distance between the first end 321 and the substrate 100 is a first height H1, and the distance between the second end 322 and the substrate 100 is a second height H2. The first height H1 is greater than or equal to the second height H2.

[0112] The first end 321 and the second end 322 of the second electrode 320 refer to the endpoints or edges of the second electrode 320 that are closest to the isolation structure 200 in the first direction X.

[0113] In these alternative embodiments, the first height H1 is greater than or equal to the second height H2, so that the first end 321 has a greater climbing height and a larger contact area with the first layer 210 and the third layer 230, thereby improving the overlap effect of the second electrode 320 with the isolation structure 200 on one side of the first end 321, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0114] In some alternative embodiments, the orthographic projection of the first end 321 onto the substrate 100 is located outside the orthographic projection of the light-emitting unit 300 onto the substrate 100.

[0115] In these alternative embodiments, the second electrode 320 is in direct contact with the third layer 230 on one side of the first end 321, avoiding the presence of a light-emitting structure 330 between the second electrode 320 and the third layer 230, which would cause the overlap between the second electrode 320 and the isolation structure 200 to fail.

[0116] In some alternative embodiments, the orthographic projection of the second end 322 onto the substrate 100 lies within the orthographic projection of the light-emitting unit 300 onto the substrate 100.

[0117] In these alternative embodiments, the distance between the second end 322 and the isolation structure 200 is increased, and the second electrode 320 is deposited further biased toward one side of the first end 321. This further increases the overlap area of ​​the second electrode 320 with the first layer 210 and the third layer 230 on one side of the first end 321, thereby improving the overlap effect of the second electrode 320 with the isolation structure 200 on one side of the first end 321 and reducing the overlap impedance and power consumption of the display panel 10.

[0118] In some optional embodiments, the display panel 10 further includes a pixel definition layer 400 located on one side of the substrate 100. The pixel definition layer 400 includes a pixel defining portion 410 and a pixel opening 420 formed by the pixel defining portion 410. The pixel opening 420 and the isolation opening 240 are connected.

[0119] In these optional embodiments, the pixel defining portion 410 of the pixel defining layer 400 encloses and forms a pixel opening 420 to provide a light-emitting structure 330, thereby enabling the light-emitting structure 330 to emit light normally. Furthermore, the pixel defining portion 410 defines the setting area of ​​each light-emitting structure 330, reducing color crosstalk between the light-emitting structures 330.

[0120] Please see Figure 8 , Figure 8 This is a partial cross-sectional view of the display panel in another embodiment.

[0121] like Figure 8 As shown, in some optional embodiments, the pixel opening 420 includes a first edge 421 and a second edge 422 disposed opposite to each other in the first direction X, and the light-emitting structure 330 includes a third edge 331 and a fourth edge 332 disposed opposite to each other in the first direction X. The first edge 421 and the third edge 331 are located on the same side, the second edge 422 and the fourth edge 332 are located on the same side, the distance between the first edge 421 and the third edge 331 in the first direction X is a first distance L1, and the distance between the second edge 422 and the fourth edge 332 in the first direction X is a second distance L2, where the first distance L1 is less than the second distance L2. For example, the first edge 421 is located on one side of the second edge 422 in the first direction X, and the fourth edge 332 is located on the other side of the third edge 331 in the first direction X.

[0122] In these optional embodiments, the first distance L1 is smaller than the second distance L2, and the light-emitting structure 330 is shifted towards the other side of the first direction X, reducing the possibility of the light-emitting structure 330 overlapping with the second portion 232 on one side of the first direction X. In addition, the second width D2 is larger than the first width D1, so even if the light-emitting structure 330 is shifted towards the other side of the first direction X, it is difficult for it to overlap with the first layer 210 on the other side of the first direction X, further reducing the possibility of the light-emitting structure 330 overlapping with the isolation structure 200 and avoiding leakage through the isolation structure 200.

[0123] Please see Figure 9 and Figure 10 , Figure 9 This is a partial cross-sectional view of the display panel in another embodiment; Figure 10 This is a schematic diagram of a pixel circuit provided in an embodiment of this application.

[0124] like Figure 9 and Figure 10 As shown, the substrate 100 includes a pixel circuit layer and a planarization layer. The pixel circuit layer includes pixel circuits 500 for driving light-emitting devices to emit light. Figure 9 The pixel circuit 500 is illustrated with transistors. A via is provided in the planarization layer, and the first electrode 310 is electrically connected to the transistors 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 inorganic and organic layers. Additionally, the substrate 100 includes scan lines providing a scan signal Scan and data lines providing a data signal Data to the pixel circuit 500.

[0125] The pixel circuit 500 includes a driving transistor T1 and a data transistor T2. The source of the data transistor T2 is connected to the data line that provides the data signal Data, the gate of the data transistor T2 is connected to the scan line that provides the scan signal Scan, and 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 the source of the driving transistor T1, and the drain of the driving transistor T1 is connected to the light-emitting unit 300. Figure 10 This is one implementation of the pixel circuit 500, but the pixel circuit 500 of this application is not limited to this. Figure 10 The pixel circuit 500 shown in the 2T1C diagram can also be other pixel circuits 500, such as 7T1C, 8T1C pixel circuits 500, etc.

[0126] like Figures 1 to 8As shown, the plurality of isolation openings 240 include a plurality of first isolation openings, a plurality of second isolation openings, and a plurality of third isolation openings. A plurality of light-emitting units 300 are located on one side of the substrate 100, and each of the plurality of light-emitting units 300 includes a plurality of first light-emitting units, a plurality of second light-emitting units, and a plurality of third light-emitting units. The first light-emitting units are disposed corresponding to the first isolation openings, the second light-emitting units are disposed corresponding to the second isolation openings, and the third light-emitting units are disposed corresponding to the third isolation openings. In one embodiment, one light-emitting unit 300 is disposed corresponding to one isolation opening 240; for example, one first light-emitting unit is disposed one-to-one with one first isolation opening, one second light-emitting unit is disposed one-to-one with one second isolation opening, and one third light-emitting unit is disposed one-to-one with one third isolation opening. At least a portion of the first light-emitting unit is disposed within the corresponding first isolation opening, at least a portion of the second light-emitting unit is disposed within the corresponding second isolation opening, and at least a portion of the third light-emitting unit is disposed within the corresponding third isolation opening. In another embodiment, a plurality of light-emitting units 300 are disposed corresponding to one isolation opening 240; for example, a plurality of light-emitting units 300 emitting the same color are disposed corresponding to one isolation opening 240.

[0127] The first layer 210 and the second layer 220 are made of different materials, and the etching rate of the second layer 220 is lower than that of the first layer 210. The first layer 210 is made of a conductive material, specifically including at least one of aluminum (Al) and aluminum alloys, and the aluminum alloys may include at least one of aluminum-neodymium alloy (AlNd), aluminum-yttrium alloy (AlY), or aluminum-silicon alloy (AlSi). The second layer 220 can be a single-layer structure or a multi-layer structure. If the second layer 220 is a single-layer structure, the material of the second layer 220 may include at least one of titanium, titanium nitride, molybdenum, tungsten, molybdenum-tungsten alloy, or molybdenum-niobium alloy. If the second layer 220 is a multi-layer structure, one layer of the second layer 220 may be made of at least one of titanium, titanium nitride, molybdenum, tungsten, molybdenum-tungsten alloy, or molybdenum-niobium alloy, and the other layer of the second layer 220 may be made of a conductive oxide or an inorganic insulating material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). Optionally, the material of the third layer 230 may include at least one of molybdenum (Mo), titanium (Ti), titanium nitride (TiN), molybdenum-tungsten alloy (MoW), or molybdenum-niobium alloy (MoNb).

[0128] In one embodiment, an isolation structure 200 is disposed on a pixel definition layer 400. The pixel definition layer 400 has pixel openings 420 communicating with the isolation opening 240. Specifically, the pixel definition layer 400 has a first pixel opening communicating with a first isolation opening, a second pixel opening communicating with a second isolation opening, and a third pixel opening communicating with a 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 100 may be the same or different. The shapes of the orthographic projections of the pixel opening 420 and the corresponding isolation opening 240 on the substrate 100 may be the same or different. Generally, the area of ​​the orthographic projection of the isolation opening 240 on the substrate 100 is larger than the area of ​​the orthographic projection of the pixel opening 420 communicating with the isolation opening 240 on the substrate 100. The orthographic projections of the pixel opening 420 of the light-emitting unit 300 on the substrate 100 overlap with the orthographic projections of the isolation opening 240 on the substrate 100. The pixel definition layer 400 is made of an inorganic material, such as an inorganic insulating material formed by using at least one of silicon nitride (SiNx), silicon oxide (SiOx), and silicon oxynitride (SiON).

[0129] The first electrode 310 may include a multilayer structure, such as 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, for example, using silver, a metallic material with excellent light reflectivity. Each conductive oxide layer can be formed, for example, from a transparent conductive oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IGZO (Indium Gallium Zinc Oxide). The second electrode 320 is formed, for example, from a metallic material such as an alloy of magnesium and silver (MgAg).

[0130] The light-emitting structure 330 includes a hole injection layer HIL, a hole transport layer HTL, an electron blocking layer EBL, a light-emitting material layer EML, a hole blocking layer HBL, an electron transport layer ETL, and an electron injection layer EIL stacked along a direction away from the substrate 100. The light-emitting structure 330 may include a single light-emitting material layer EML, or a stacked light-emitting structure 330 including multiple light-emitting material layers EML.

[0131] In order for the light-emitting structure 330 to emit light, a pixel voltage is provided to the first electrode 310 and a common voltage is provided to the second electrode 320, forming a potential difference between the first electrode 310 and the second electrode 320, causing the light-emitting structure 330 disposed between the first electrode 310 and the second electrode 320 to emit light. In one embodiment, if a potential difference is formed between the first electrode 310 and the second electrode 320 of the first light-emitting device, the light-emitting material layer EML of the light-emitting structure 330 emits blue light; if a potential difference is formed between the first electrode 310 and the second electrode 320 of the second light-emitting device, the light-emitting material layer EML of the light-emitting structure 330 emits green light; and if a potential difference is formed between the first electrode 310 and the second electrode 320 of the third light-emitting device, the light-emitting material layer EML of the light-emitting structure 330 emits red light.

[0132] In this configuration, the pixel voltage of the first electrode 310 is provided by the pixel circuit 500, and the common voltage of the second electrode 320 is provided by the isolation structure 200. Specifically, the second electrode 320 is electrically connected to the isolation structure 200, and the common voltage is supplied to the second electrode 320 by providing the isolation structure 200. That is, the isolation structure 200 has the function of supplying a common voltage to the second electrode 320.

[0133] The display panel 10 further includes a first encapsulation layer, which includes a plurality of encapsulation portions. The encapsulation portions are located on the side of the second electrode 320 facing away from the substrate 100, and extend through the sidewall of the isolation structure 200 to the side of the isolation structure 200 facing away from the substrate 100. The plurality of encapsulation portions include a plurality of first encapsulation portions corresponding to a plurality of first light-emitting devices, a plurality of second encapsulation portions corresponding to a plurality of second light-emitting devices, and a plurality of third encapsulation portions corresponding to a plurality of third light-emitting devices. The first encapsulation portions are disposed on the side of the corresponding first light-emitting device facing away from the substrate 100, the second encapsulation portions are disposed on the side of the corresponding second light-emitting device facing away from the substrate 100, and the third encapsulation portions are disposed on the side of the corresponding third light-emitting device facing away from the substrate 100.

[0134] The display panel 10 also includes a second encapsulation layer and a third encapsulation layer. The second encapsulation layer covers the isolation structure 200 and the encapsulation portion, and the third encapsulation layer covers the second encapsulation layer. Both the first and third encapsulation layers are inorganic materials, and the materials of the first and third encapsulation layers include at least one of silicon nitride (SiN), silicon oxide (SiO), and silicon oxynitride (SiON). The second encapsulation layer is an organic insulating material, such as epoxy resin, acrylic resin, or other resin materials. The second and third encapsulation layers are continuously disposed at least over the entire display area, with a portion also disposed in the bezel area.

[0135] The display panel 10 may also 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 10 via an adhesive layer such as OCA (Optical Clear Adhesive).

[0136] like Figures 1 to 10 As shown, a second aspect embodiment of this application provides a display panel 10, which includes: a substrate 100; an isolation structure 200 located on one side of the substrate 100, the isolation structure 200 enclosing an isolation opening 240, the isolation structure 200 including a first layer 210, a second layer 220 located on the side of the first layer 210 facing away from the substrate 100, and a third layer 230 located on the side of the first layer 210 facing the substrate 100, the two sides of the second layer 220 protruding from the first layer 210 towards the isolation opening 240, the third layer 230 including a first portion 231 and a second portion 232, the first portion 231 being projected onto the substrate 100 within the projected projection of the first layer 210 onto the substrate 100, the second portion 232 being projected onto the substrate 100 outside the projected projection of the first layer 210 onto the substrate 100, and a second electrode 320 and the second portion 232 being... Electrical connection; the second layer 220 includes a protrusion that protrudes toward the isolation opening 240 relative to the first layer 210, and the width of the protrusion is the extension width in the direction pointing from the protrusion toward the isolation opening 240; a light-emitting unit 300 is located on one side of the substrate 100, and the light-emitting unit 300 includes a light-emitting structure 330 at least partially located in the isolation opening 240, the light-emitting structure 330 is spaced apart from the isolation structure 200, the extension width of the light-emitting structure 330 corresponding to the isolation structure 200 on one side in the first direction X is a first width D1, and the extension width corresponding to the isolation structure 200 on the other side in the first direction X is a second width D2, the first width D1 is less than the second width D2; the extension width of the light-emitting structure 330 corresponding to the isolation structure 200 on one side in the second direction Y is a third width D3, the third width D3 is greater than the first width D1, and the first direction X and the second direction Y intersect.

[0137] According to an embodiment of this application, the display panel 10 includes a substrate 100, an isolation structure 200, a light-emitting layer, and a first electrode 310 layer. The isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 facing away from the substrate 100. The two sides of the second layer 220 protrude towards the isolation opening 240 compared to the first layer 210. When the light-emitting material is fabricated, a large drop occurs at the edge of the isolation structure 200, making it difficult for the light-emitting material to connect at the edge, resulting in breakage. This breakage forms mutually disconnected light-emitting structures 330, thereby reducing crosstalk between charge carriers in the light-emitting structures 330, improving the display effect of the display panel 10. Furthermore, fabricating the light-emitting structure 330 does not require a precision mask, reducing the development and use of precision masks and lowering manufacturing costs. The light-emitting structure 330 and the isolation structure 200 are spaced apart to improve the electrical connection between them, preventing problems such as leakage through the isolation structure 200. The first width D1 is smaller than the second width D2, and the second width D2 is set to be larger. That is, the first layer 210 on the other side of the light-emitting structure 330 in the first direction X is more recessed than the second layer 220. This makes it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed, thus improving the electrical connection between the light-emitting structure 330 and the isolation structure 200. This prevents problems such as leakage of the light-emitting structure 330 through the isolation structure 200, thereby improving the display effect and performance of the display panel 10. The third width D3 is larger than the first width D1, and the third width D3 is set to be larger. That is, the first layer 210 on the side of the light-emitting structure 330 in the second direction Y is more recessed than the second layer 220. This makes it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed, thus improving the electrical connection between the light-emitting structure 330 and the isolation structure 200. This prevents problems such as leakage of the light-emitting structure 330 through the isolation structure 200.

[0138] The structural design in this embodiment can be applied to other display panels 10. The specific choice can be made according to the actual situation, and this application does not impose any specific restrictions on it.

[0139] Please see Figure 11 See also Figures 1 to 10 , Figure 11 This is a flowchart of a method for manufacturing a display panel provided in an embodiment of this application.

[0140] like Figures 1 to 11 As shown, an embodiment of the third aspect of this application provides a method for manufacturing a display panel 10, comprising: Step S01: An isolation structure 200 is fabricated on the substrate 100. The isolation structure 200 encloses and forms an isolation opening 240. The isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 away from the substrate 100. The orthographic projection of the first layer 210 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100. The second layer 220 includes a protrusion that protrudes toward the isolation opening 240 relative to the first layer 210. The width of the protrusion is the extension width in the direction from the protrusion toward the isolation opening 240. Step S02: A light-emitting structure 330 is prepared on the substrate 100. At least a portion of the light-emitting structure 330 is located in the light-emitting structure 330 of the isolation opening 240. The light-emitting structure 330 is spaced apart from the isolation structure 200. The extension width of the light-emitting structure 330 on one side of the isolation structure 200 in the first direction X is the first width D1, and the extension width of the light-emitting structure 330 on the other side of the isolation structure 200 in the first direction X is the second width D2. The first width D1 is smaller than the second width D2.

[0141] According to the method for fabricating the display panel 10 according to the embodiments of this application, an isolation structure 200 is fabricated in step S01. A light-emitting structure 330 is fabricated in step S02. The isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 facing away from the substrate 100. The two sides of the second layer 220 protrude towards the isolation opening 240 compared to the first layer 210. When the light-emitting material is fabricated, a large drop occurs at the edge of the isolation structure 200, making it difficult for the light-emitting material to connect at the edge of the isolation structure 200, resulting in breakage. The breakage of the light-emitting material forms mutually disconnected light-emitting structures 330, thereby reducing crosstalk between charge carriers in the light-emitting structures 330, improving the display effect of the display panel 10, and fabricating the light-emitting structure 330 does not require the use of a precision mask, which can reduce the development and use of precision masks and reduce the fabrication cost. The light-emitting structure 330 and the isolation structure 200 are spaced apart to improve the electrical connection between the light-emitting structure 330 and the isolation structure 200, thus preventing problems such as leakage of the light-emitting structure 330 through the isolation structure 200. The first width D1 is smaller than the second width D2, and the second width D2 is set to be larger. That is, the first layer 210 on the other side of the light-emitting structure 330 in the first direction X is more recessed than the second layer 220. This makes it difficult for the light-emitting structure 330 to overlap with the first layer 210 after it is formed. This improves the electrical connection between the light-emitting structure 330 and the isolation structure 200, preventing problems such as leakage of the light-emitting structure 330 through the isolation structure 200. This improves the display effect and performance of the display panel 10.

[0142] In some optional embodiments, the step of fabricating the isolation structure 200 on the substrate 100 includes: A first isolation material layer is prepared on the substrate 100, and the first isolation material layer is patterned to form a third layer 230; A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer 230 away from the substrate 100, and the second isolation material layer and the third isolation material layer are patterned to form a first layer 210 and a second layer 220. The second layer 220 is located on the side of the first layer 210 away from the substrate 100, and the third layer 230 is located on the side of the first layer 210 facing the substrate 100. The orthographic projection of the first layer 210 on the substrate 100 is within the orthographic projection of the second layer 220 on the substrate 100, and part of the orthographic projection of the third layer 230 on the substrate 100 is outside the orthographic projection of the first layer 210 on the substrate 100.

[0143] In these optional embodiments, a first insulating material layer is first prepared. A third layer 230 is formed by patterning the first insulating material layer. The third layer 230 is prepared separately, allowing for customized design to form the structure of the first portion 231 and the second portion 232. The first layer 210 and the second layer 220 are then prepared after the third layer 230 is formed.

[0144] In some optional embodiments, the step of fabricating a first insulating material layer on the substrate 100 and patterning the first insulating material layer to form the third layer 230 includes: A first insulating material layer is prepared on the substrate 100; A first barrier material layer is prepared on the side of the first isolation material layer away from the substrate 100, and the first barrier material layer is patterned using a first mask to form the first barrier layer. The first barrier layer is used to pattern the first isolation material layer to form the third layer 230.

[0145] In these alternative embodiments, the first barrier layer has multiple openings, through which the first isolation material layer is etched away, while the portion covered below the first barrier layer is retained, forming a third layer 230.

[0146] Optionally, the material of the first barrier layer may include photoresist.

[0147] In some optional embodiments, the method includes sequentially fabricating a second isolation material layer and a third isolation material layer on the side of the third layer 230 facing away from the substrate 100, and patterning the second isolation material layer and the third isolation material layer to form the first layer 210 and the second layer 220, wherein the method comprises: A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer 230 facing away from the substrate 100; Dry etching is performed on the second and third isolation material layers to remove a portion of the second and third isolation material layers; The second isolation material layer is wet-etched to remove part of the second isolation material layer; A second barrier material layer is prepared on the side of the third isolation material layer away from the substrate 100, and the second barrier material layer is patterned using a second mask to form a second barrier layer. The orthographic projection of the second portion 232 on the substrate 100 is located within the orthographic projection of the second barrier layer on the substrate 100. The second barrier layer is patterned to form the first layer 210 and the second layer 220.

[0148] In these optional embodiments, the second and third isolation material layers are first dry-etched simultaneously to form an opening. The sidewalls of the second material layer are then wet-etched through the opening to cause the second isolation material layer to be recessed relative to the third isolation material layer and the third layer 230. A second barrier layer is then prepared, which covers the second portion 232, thereby enclosing the sidewalls of the second isolation material layer located on one side of the second portion 232. The second isolation material layer is then further wet-etched, removing the sidewalls of the second isolation material layer not covered by the second barrier layer, thereby forming the first layer 210 and the second layer 220.

[0149] In some alternative embodiments, the first mask and the second mask are the same.

[0150] In these alternative embodiments, the first barrier layer and the second barrier layer are prepared using the same mask, such that the second barrier layer can cover the second isolation material layer on one side of the second portion 232 and expose the second isolation material layer at other locations, thereby etching to form the first layer 210 and the second layer 220, wherein the second width D2, the third width D3 and the fourth width D4 are all greater than the first width D1.

[0151] An embodiment of the fourth aspect of this application also provides a display device, including a display panel 10 of any of the above embodiments and a display panel 10 prepared by the preparation method of the display panel 10 of any of the embodiments. Since the display device provided by the fourth aspect of this application includes a display panel 10 of any of the above embodiments and a display panel 10 prepared by the preparation method of the display panel 10 of any of the embodiments, the display device provided by the fourth aspect of this application has the beneficial effects of the display panel 10 of any of the above embodiments and the display panel 10 prepared by the preparation method of the display panel 10 of any of the embodiments, which will not be elaborated further here.

[0152] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0153] The embodiments described above are not exhaustive, nor do they limit the invention to the specific embodiments described. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; An isolation structure is located on one side of the substrate. The isolation structure encloses and forms an isolation opening. The isolation structure includes a first layer and a second layer located on the side of the first layer away from the substrate. The two sides of the second layer protrude toward the isolation opening relative to the first layer. The second layer includes a protrusion that protrudes toward the isolation opening relative to the first layer. The width of the protrusion is an extension width in the direction from the protrusion toward the isolation opening. A light-emitting unit is located on one side of the substrate. The light-emitting unit includes a light-emitting structure at least partially located in the isolation opening. The light-emitting structure is spaced apart from the isolation structure. The extension width of the light-emitting structure on one side of the isolation structure in a first direction is a first width, and the extension width of the light-emitting structure on the other side of the isolation structure in the first direction is a second width. The first width is smaller than the second width.

2. The display panel according to claim 1, characterized in that, The extension width corresponding to the isolation structure on one side of the light-emitting structure in the second direction is a third width, the third width is greater than the first width, and the first direction and the second direction intersect. Preferably, the third width is 1μm to 2μm.

3. The display panel according to claim 2, characterized in that, The extension width corresponding to the isolation structure on the other side of the second direction of the light-emitting structure is a fourth width, and the fourth width is greater than the first width; Preferably, the fourth width is 1μm to 2μm.

4. The display panel according to claim 1, characterized in that, The first width is 0.5μm~1μm; Preferably, the second width is 1μm to 2μm.

5. The display panel according to claim 1, characterized in that, The light-emitting unit further includes a first electrode located on the side of the light-emitting structure close to the substrate and a second electrode located on the side of the light-emitting structure away from the substrate, wherein the second electrode is electrically connected to the isolation structure. Preferably, the second electrode is electrically connected to the isolation structure on one side in the first direction; Preferably, the second electrode is spaced apart from the isolation structure on the other side of the first direction; Preferably, the second electrode is spaced apart from the isolation structure on one side in the second direction; Preferably, the second electrode is spaced apart from the isolation structure on the other side of the second direction.

6. The display panel according to claim 5, characterized in that, The isolation structure further includes a third layer located on the side of the first layer facing the substrate, at least one side of the third layer protruding from the first layer towards the isolation opening, and the isolation structure and the third layer are electrically connected.

7. The display panel according to claim 6, characterized in that, The third layer includes a first portion and a second portion. The first portion is projected onto the substrate within the projection of the first layer onto the substrate, and the second portion is projected onto the substrate outside the projection of the first layer onto the substrate. The second electrode is electrically connected to the second portion. Preferably, the sidewall of the first layer facing the isolation opening is spaced apart from the sidewall of the first portion facing the isolation opening; Preferably, the second electrode is electrically connected to the third layer on one side in the first direction; Preferably, the second electrode is spaced apart from the third layer on the other side of the first direction; Preferably, the second electrode is spaced from the third layer on one side in the second direction; Preferably, the second electrode is spaced apart from the third layer on the other side of the second direction.

8. The display panel according to claim 7, characterized in that, The second portion is located on one side of the first portion in the first direction; Preferably, within the same isolation opening, the light-emitting structure has a second portion on one side in the first direction; Preferably, in each of the third layers, the second portion is located on the same side of the first portion in the first direction.

9. The display panel according to claim 5, characterized in that, The second electrode has a first end and a second end disposed opposite to each other in the first direction. The first end is in contact with the isolation structure, and the second end is spaced apart from the isolation structure. The distance between the first end and the substrate is a first height, and the distance between the second end and the substrate is a second height. The first height is greater than or equal to the second height. Preferably, the orthographic projection of the first end onto the substrate is located outside the orthographic projection of the light-emitting unit onto the substrate; Preferably, the orthographic projection of the second end onto the substrate is located within the orthographic projection of the light-emitting unit onto the substrate.

10. The display panel according to claim 1, characterized in that, The display panel also includes: A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening and the isolation opening are in communication.

11. The display panel according to claim 10, characterized in that, The pixel opening includes a first edge and a second edge disposed opposite to each other in the first direction, and the light-emitting structure includes a third edge and a fourth edge disposed opposite to each other in the first direction. The first edge and the third edge are located on the same side, the second edge and the fourth edge are located on the same side, the distance between the first edge and the third edge in the first direction is a first distance, and the distance between the second edge and the fourth edge in the first direction is a second distance. The first distance is less than the second distance.

12. A display panel, characterized in that, The display panel includes: substrate; An isolation structure is located on one side of the substrate, forming an isolation opening. The isolation structure includes a first layer, a second layer located on the side of the first layer facing away from the substrate, and a third layer located on the side of the first layer facing the substrate. The two sides of the second layer protrude towards the isolation opening relative to the first layer. The third layer includes a first portion and a second portion. The orthographic projection of the first portion onto the substrate is within the orthographic projection of the first layer onto the substrate, and the orthographic projection of the second portion onto the substrate is outside the orthographic projection of the first layer onto the substrate. The second layer includes a protrusion that protrudes towards the isolation opening relative to the first layer. The width of the protrusion is an extension width along the direction from the protrusion towards the isolation opening. A light-emitting unit is located on one side of the substrate. The light-emitting unit includes a light-emitting structure at least partially located in the isolation opening. The light-emitting structure is spaced apart from the isolation structure. The extension width of the light-emitting structure on one side of the isolation structure in a first direction is a first width, and the extension width of the light-emitting structure on the other side of the isolation structure in the first direction is a second width. The first width is smaller than the second width. The extension width of the light-emitting structure on one side of the isolation structure in a second direction is a third width, and the third width is greater than the first width. The first direction and the second direction intersect.

13. The display panel according to claim 12, characterized in that, The extension width corresponding to the isolation structure on the other side of the second direction of the light-emitting structure is a fourth width, and the fourth width is greater than the first width; Preferably, the fourth width is 1μm to 2μm.

14. The display panel according to claim 12, characterized in that, The display panel also includes: A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening and the isolation opening are in communication.

15. The display panel according to claim 14, characterized in that, The pixel opening includes a first edge and a second edge disposed opposite to each other in the first direction, and the light-emitting structure includes a third edge and a fourth edge disposed opposite to each other in the first direction. The first edge and the third edge are located on the same side, the second edge and the fourth edge are located on the same side, the distance between the first edge and the third edge in the first direction is a first distance, and the distance between the second edge and the fourth edge in the first direction is a second distance. The first distance is less than the second distance.

16. A method for manufacturing a display panel, characterized in that, include: An isolation structure is fabricated on a substrate, the isolation structure enclosing an isolation opening, the isolation structure including a first layer and a second layer located on the side of the first layer away from the substrate, the orthographic projection of the first layer on the substrate being located within the orthographic projection of the second layer on the substrate, the second layer including a protrusion protruding relative to the first layer toward the isolation opening, the width of the protrusion being an extension width in the direction of the protrusion toward the isolation opening; A light-emitting structure is fabricated on the substrate, at least a portion of the light-emitting structure is located in the light-emitting structure of the isolation opening, the light-emitting structure is spaced apart from the isolation structure, the extension width of the light-emitting structure on one side of the isolation structure in a first direction is a first width, the extension width of the light-emitting structure on the other side of the isolation structure in the first direction is a second width, and the first width is smaller than the second width.

17. The preparation method according to claim 16, characterized in that, In the step of fabricating the isolation structure on the substrate, the method includes: A first isolation material layer is prepared on the substrate, and the first isolation material layer is patterned to form a third layer; A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer away from the substrate, and the second isolation material layer and the third isolation material layer are patterned to form a first layer and a second layer. The second layer is located on the side of the first layer away from the substrate, and the third layer is located on the side of the first layer facing the substrate. The orthographic projection of the first layer on the substrate is within the orthographic projection of the second layer on the substrate, and a portion of the orthographic projection of the third layer on the substrate is outside the orthographic projection of the first layer on the substrate.

18. The preparation method according to claim 17, characterized in that, In the step of preparing a first insulating material layer on the substrate and patterning the first insulating material layer to form a third layer, the method includes: A first insulating material layer is prepared on the substrate; A first barrier material layer is prepared on the side of the first isolation material layer away from the substrate, and a first mask is used to pattern the first barrier material layer to form a first barrier layer. The first barrier layer is used to pattern the first insulating material layer to form a third layer; Preferably, the orthographic projection of a portion of the third layer onto the substrate is located outside the orthographic projection of the first layer onto the substrate, and the isolation structure and the third layer are electrically connected; Preferably, the third layer includes a first portion and a second portion, wherein the orthographic projection of the first portion onto the substrate is within the orthographic projection of the first layer onto the substrate, and the orthographic projection of the second portion onto the substrate is outside the orthographic projection of the first layer onto the substrate.

19. The preparation method according to claim 18, characterized in that, In the step of sequentially fabricating a second isolation material layer and a third isolation material layer on the side of the third layer opposite to the substrate, and patterning the second isolation material layer and the third isolation material layer to form the first layer and the second layer, the method includes: A second isolation material layer and a third isolation material layer are sequentially prepared on the side of the third layer opposite to the substrate; Dry etching is performed on the second and third isolation material layers to remove a portion of the second and third isolation material layers. The second isolation material layer is wet-etched to remove a portion of the second isolation material layer; A second barrier material layer is prepared on the side of the third isolation material layer away from the substrate, and the second barrier material layer is patterned using a second mask to form a second barrier layer. The second portion is located within the orthogonal projection of the second barrier layer on the substrate. The second barrier layer is used to pattern the second insulating material layer to form a first layer and a second layer. Preferably, the first mask and the second mask are the same.

20. A display device, characterized in that, The display panel includes the display panel according to any one of claims 1-15 or the display panel prepared by the method of preparing the display panel according to any one of claims 16-19.

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