Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, an isolation structure, a light-emitting unit and a first encapsulation layer. The first encapsulation layer comprises an encapsulation part, the encapsulation part comprises a first segment and a second segment connected to each other, the first segment is located in an isolation opening, the second segment is located on a side of the isolation structure facing the isolation opening, and a side surface of the first segment away from the substrate and a side surface of the second segment away from the isolation structure are at least partially connected to each other to form a gap space. The isolation structure comprises a first sub-layer and a second sub-layer stacked, the first sub-layer has a top surface away from the substrate, and the second sub-layer protrudes from the first sub-layer by a length a towards the isolation opening. The gap space has a first boundary away from the isolation structure in the orthographic projection of the substrate, the top surface has a second boundary in the orthographic projection of the substrate, and the distance between the first boundary and the second boundary is b, b>a. The application improves the yield and use performance of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and 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] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] This application provides a display panel and display device, which aim to improve the performance of OLED display products.

[0005] A first aspect of this application provides a display panel, which includes a substrate, an isolation structure, a light-emitting unit, and a first encapsulation layer. A plurality of isolation openings are formed on one side of the substrate. The isolation structure includes a first sub-layer and a second sub-layer located on the side of the first sub-layer facing away from the substrate. The first sub-layer includes a top surface facing away from the substrate and a sidewall facing the isolation opening. The second sub-layer protrudes from the sidewall towards the isolation opening by a length of a. The light-emitting unit is at least partially located within the isolation opening. The first encapsulation layer includes a plurality of encapsulation portions, each including a first segment and a second segment connected to each other. The first segment is located within the isolation opening and disposed on the side of the light-emitting unit facing away from the substrate. The second segment is located on the side of the isolation structure facing the isolation opening. The surface of the first segment facing away from the substrate and the surface of the second segment facing away from the isolation structure are at least partially connected to each other to form a gap space. Within the same isolation opening, the gap space, when projected onto the substrate, has a first boundary away from the isolation structure, and the top surface, when projected onto the substrate, has a second boundary. The distance between the first boundary and the second boundary is b, where b > a.

[0006] According to the implementation of the first aspect of this application, 1.5a≤b≤2.5a.

[0007] According to any of the foregoing embodiments of the first aspect of this application, b = 2a.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a pixel defining portion disposed on the side of the isolation structure near the substrate, wherein the pixel defining portion has a first orthographic projection on the substrate, the second sublayer has a second orthographic projection on the substrate, the first orthographic projection includes a projection portion located outside the second orthographic projection; the second segment has a third boundary facing the isolation opening in its orthographic projection on the substrate, the third boundary being located within the projection portion.

[0009] According to any of the foregoing embodiments of the first aspect of this application, within the same isolation opening, the distance between the third boundary and the second boundary is c, where b < c.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the connection between the side surface of the first segment facing away from the substrate and the side surface of the second segment facing away from the isolation structure is a connection area. The orthographic projection of the connection area onto the substrate includes a first boundary and a fourth boundary. The fourth boundary is located on the side of the first boundary facing away from the isolation structure, and the distance between the fourth boundary and the second boundary is d, where d≤c.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the first segment includes a main body support portion, the support portion being located on the side of the main body away from the substrate and extending toward the second segment, and the support portion being interconnected with the second segment.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the end of the main body facing the isolation structure is connected to the end of the second segment facing the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, a plurality of pixel openings are formed by the pixel limiting portion, and the pixel openings are connected to the corresponding isolation openings. The opening area of ​​the pixel openings gradually increases along the direction away from the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the main body includes a first portion and a second portion that are interconnected. The orthographic projection of the first portion onto the substrate is located within the orthographic projection of the pixel opening onto the substrate, and the orthographic projection of the second portion onto the substrate is located within the orthographic projection of the pixel limiting portion onto the substrate.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the second segment includes a first portion disposed on the side of the second sublayer facing the isolation opening, the support portion being interconnected with the first portion to enclose and form a gap space, and the first portion extending toward the side away from the substrate.

[0016] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the gap space is located between the second sublayer and the substrate.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the second segment further includes a second part disposed on the side of the first sub-layer facing the isolation opening, the first part being spaced apart from the main body, the second part being spaced apart from the support part, and the first part, the second part, the support part, and the main body forming a gap space.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the packaging portion further includes a third segment, the third segment being located on the side of the second sublayer away from the substrate, one end of the second segment extending toward the side away from the substrate and connecting with the third segment, the third segment being spaced apart from the isolation structure, and a support structure filling the space between the third segment and the isolation structure.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second encapsulation layer disposed on the side of the first encapsulation layer away from the substrate, wherein at least a portion of the material of the second encapsulation layer extends between the third segment and the isolation structure to form a support structure.

[0020] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the second encapsulation layer is located on the side of the third segment facing away from the isolation structure.

[0021] According to any of the foregoing embodiments of the first aspect of this application, the material of the first encapsulation layer includes inorganic materials, and / or the material of the second encapsulation layer includes organic materials.

[0022] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further includes a third sublayer disposed on the side of the first sublayer facing the substrate, the third sublayer being disposed protruding from the first sublayer toward the isolation opening.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the gap space is a closed structure.

[0024] An embodiment of the first aspect of this application also provides a display panel, including a substrate, a pixel defining portion, an isolation structure, a light-emitting unit, and a first encapsulation layer; the pixel defining portion is disposed on one side of the substrate; the isolation structure is located on the side of the pixel defining portion away from the substrate and surrounds a plurality of isolation openings, the isolation structure includes a first sub-layer and a second sub-layer located on the side of the first sub-layer away from the substrate, the first sub-layer includes a top surface away from the substrate and a sidewall facing the isolation opening, the second sub-layer protrudes from the sidewall toward the isolation opening; the light-emitting unit is at least partially located within the isolation opening; the first encapsulation layer includes a plurality of encapsulation portions, the encapsulation portions being interconnected The first segment is located within the isolation opening and disposed on the side of the light-emitting unit away from the substrate. The second segment is located on the side of the isolation structure facing the isolation opening. The surface of the first segment away from the substrate and the surface of the second segment away from the isolation structure are at least partially connected to each other to form a gap space. The pixel defining portion has a first orthographic projection on the substrate, and the second sublayer has a second orthographic projection on the substrate. The first orthographic projection includes a projection portion located outside the second orthographic projection. The orthographic projection of the second segment on the substrate has a third boundary facing the isolation opening, and the third boundary is located within the projection portion.

[0025] According to an embodiment of the first aspect of this application, within the same isolation opening, the gap space has a first boundary far from the isolation structure when projected onto the substrate, and the top surface has a second boundary when projected onto the substrate. The distance between the first boundary and the second boundary is b, and the distance between the third boundary and the second boundary is c, where b < c.

[0026] According to any of the foregoing embodiments of the first aspect of this application, the connection between the side surface of the first segment facing away from the substrate and the side surface of the second segment facing away from the isolation structure is a connection area. The orthographic projection of the connection area onto the substrate includes a first boundary and a fourth boundary. The fourth boundary is located on the side of the first boundary facing away from the isolation structure, and the distance between the fourth boundary and the second boundary is d, where d≤c.

[0027] According to any of the foregoing embodiments of the first aspect of this application, a plurality of pixel openings are formed by the pixel limiting portion, and the pixel openings are connected to the corresponding isolation openings. The opening area of ​​the pixel openings gradually increases along the direction away from the substrate.

[0028] According to any of the foregoing embodiments of the first aspect of this application, the first segment includes a main body and a support portion. The support portion is located on the side of the main body away from the substrate and extends toward the second segment. The support portion and the second segment are interconnected.

[0029] According to any of the foregoing embodiments of the first aspect of this application, the end of the main body facing the isolation structure is connected to the end of the second segment facing the substrate.

[0030] According to any of the foregoing embodiments of the first aspect of this application, the main body includes a first portion and a second portion that are interconnected. The orthographic projection of the first portion onto the substrate is located within the orthographic projection of the pixel opening onto the substrate, and the orthographic projection of the second portion onto the substrate is located within the orthographic projection of the pixel limiting portion onto the substrate.

[0031] According to any of the foregoing embodiments of the first aspect of this application, the second segment includes a first portion disposed on the side of the second sublayer facing the isolation opening, the support portion being interconnected with the first portion to enclose and form a gap space, and the first portion extending toward the side away from the substrate.

[0032] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the gap space is located between the second sublayer and the substrate.

[0033] According to any of the foregoing embodiments of the first aspect of this application, the second segment further includes a second part disposed on the side of the first sub-layer facing the isolation opening, the first part being spaced apart from the main body, the second part being spaced apart from the support part, and the first part, the second part, the support part, and the main body forming a gap space.

[0034] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further includes a third sublayer disposed on the side of the first sublayer facing the substrate, the third sublayer being disposed protruding from the first sublayer toward the isolation opening.

[0035] According to any of the foregoing embodiments of the first aspect of this application, the gap space is a closed structure.

[0036] According to any of the foregoing embodiments of the first aspect of this application, the packaging portion further includes a third segment, the third segment being located on the side of the second sublayer away from the substrate, one end of the second segment extending toward the side away from the substrate and connecting with the third segment, the third segment being spaced apart from the isolation structure, and a support structure filling the space between the third segment and the isolation structure.

[0037] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second encapsulation layer disposed on the side of the first encapsulation layer away from the substrate, wherein at least a portion of the material of the second encapsulation layer extends between the third segment and the isolation structure to form a support structure.

[0038] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the second encapsulation layer is located on the side of the third segment facing away from the isolation structure.

[0039] According to any of the foregoing embodiments of the first aspect of this application, the material of the first encapsulation layer includes inorganic materials, and / or the material of the second encapsulation layer includes organic materials.

[0040] An embodiment of the second aspect of this application provides a display device, which includes a display panel of any of the above embodiments.

[0041] According to an embodiment of this application, the display panel includes a substrate, an isolation structure, light-emitting units, and a first encapsulation layer. The isolation structure is disposed on one side of the substrate and forms an isolation opening. The light-emitting units are at least partially located within the isolation opening. The isolation structure can be used to divide the display panel into sub-pixels. The isolation structure is disposed on the substrate and forms multiple isolation openings to isolate the light-emitting layer, forming mutually disconnected light-emitting units. This reduces crosstalk of charge carriers within the light-emitting layer, improves the display effect of the display panel, and eliminates the need for precision photomasks in the fabrication of the light-emitting units, reducing the development and use of precision photomasks and lowering manufacturing costs. The first encapsulation layer is disposed on the side of the light-emitting units facing away from the substrate. The first encapsulation layer includes a first segment and a second segment. The first segment is located within the isolation opening and on the side of the light-emitting units facing away from the substrate, while the second segment is located on the side of the isolation structure facing the isolation opening. The first encapsulation layer can be used to encapsulate the light-emitting units. By setting the surface of the first segment facing away from the substrate to be at least partially connected to the surface of the second segment facing away from the isolation structure, and by forming a gap space and a connection area between the first segment and the second segment, the first segment can provide better support for the second segment, making it less likely for the second segment to detach from the isolation structure, thereby improving the encapsulation effect of the first encapsulation layer on the display panel.

[0042] The second sublayer protrudes from the first sublayer toward the isolation opening. The distance from the second sublayer to the first sublayer toward the isolation opening along the direction perpendicular to the substrate is 'a'. The distance between the first boundary of the gap space projected away from the first boundary of the isolation structure and the second boundary of the top surface of the first sublayer is 'b'. By limiting b to be greater than a, the connection position between the first segment and the second segment can be located outside the first sublayer. This reduces the impact of the sealing structure formed by the connection between the first segment and the second segment on the preparation of the first encapsulation layer. It also allows the material for the first encapsulation layer to be deposited more uniformly on the isolation structure to form a complete encapsulation structure, thereby improving the yield and performance of the display panel. Attached Figure Description

[0043] 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.

[0044] Figure 1 This is a partial structural diagram of an isolation structure in a display panel provided in an embodiment of this application;

[0045] Figure 2 This is a partial cross-sectional view of a display panel provided in an embodiment of this application;

[0046] Figure 3 yes Figure 2 Enlarged view of section A;

[0047] Figure 4 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0048] Figure 5 This is a schematic diagram of the structure of the first segment in a display panel provided in an embodiment of this application;

[0049] Figure 6 This is a partial cross-sectional view of a display panel provided in another embodiment of this application.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Substrate;

[0052] 2. Pixel definition layer; 21. Pixel limiting part; 22. Pixel opening;

[0053] 3. Isolation structure; 30. Isolation opening; 31. First sub-layer; 311. Top surface; 32. Second sub-layer; 33. Third sub-layer;

[0054] 4. Light-emitting layer; 41. Light-emitting unit;

[0055] 5. First encapsulation layer; 50. Encapsulation part; 51. First segment; 511. Main body part; 5111. First part; 5112. Second part; 512. Support part; 52. Second segment; 521. First portion; 522. Second portion; 53. Third segment; 500. Gap space; 510. Connection area; 5100. First boundary; 5200. Second boundary; 5300. Third boundary; 5400. Fourth boundary;

[0056] 6. Second encapsulation layer; 61. Support structure; 71. First electrode layer; 711. First electrode; 72. Second electrode layer; 721. Second electrode; 8. Third encapsulation layer. Detailed Implementation

[0057] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0059] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0060] This application provides a display panel and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0061] Please refer to the following: Figures 1 to 3 , Figure 1 This is a partial structural diagram of an isolation structure in a display panel provided in an embodiment of this application; Figure 2 This is a partial cross-sectional view of a display panel provided in an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0062] like Figures 1 to 3As shown, a first aspect of this application provides a display panel, which includes a substrate 1, an isolation structure 3, a light-emitting layer 4, and a first encapsulation layer 5. The isolation structure 3 is disposed on one side of the substrate 1 and encloses a plurality of isolation openings 30. The isolation structure 3 includes a first sub-layer 31 and a second sub-layer 32 located on the side of the first sub-layer 31 facing away from the substrate 1. The first sub-layer 31 includes a top surface 311 facing away from the substrate 1 and a sidewall facing the opening. The second sub-layer 32 protrudes from the sidewall toward the isolation opening 30 by a length a. The light-emitting layer 4 includes a plurality of light-emitting units 41, which are at least partially located within the isolation openings 30. The first encapsulation layer 5 includes a plurality of encapsulation portions 50 for encapsulating the light-emitting units 41. The structure includes a first segment 51 and a second segment 52 that are interconnected. The first segment 51 is located within the isolation opening 30 and is disposed on the side of the light-emitting unit 41 facing away from the substrate 1. The second segment 52 is located on the side of the isolation structure 3 facing the isolation opening 30. The surface of the first segment 51 facing away from the substrate 1 and the surface of the second segment 52 facing away from the isolation structure 3 are at least partially interconnected to enclose and form a gap space 500. Within the same isolation opening 30, the gap space 500 has a first boundary 5100 away from the isolation structure 3 in the orthogonal projection of the substrate 1, and a second boundary 5200 in the orthogonal projection of the top surface 311 on the substrate 1. The distance between the first boundary 5100 and the second boundary 5200 is b, where b>a.

[0063] Optionally, the gap space 500, projected onto the substrate 1, has a first boundary 5100 away from the isolation structure 3. This can be understood as follows: the connection point between the surface of the first segment 51 facing away from the substrate 1 and the surface of the second segment 52 facing away from the isolation structure 3 is defined as the connection region 510. The projection of the connection region 510 onto the substrate 1 includes two boundaries, wherein the boundary closer to the isolation structure 3 coincides with the first boundary 5100, and the two are the same boundary. That is, the first boundary 5100 is formed by the connection between the surface of the first segment 51 facing away from the substrate 1 and the surface of the second segment 52 facing away from the isolation structure 3.

[0064] Optionally, the above structure can be referenced in the orthographic projection direction of substrate 1. Figure 2 The Z-axis direction can also be the thickness direction of the display panel.

[0065] Optional, such as Figure 1 As shown, the isolation structure 3 can be in the form of a grid to facilitate the division of sub-pixels in the display panel. The hollowed-out areas in the grid-shaped isolation structure 3 can be isolation openings 30.

[0066] In a display panel provided in this application embodiment, the display panel includes a substrate 1, an isolation structure 3, light-emitting units 41, and a first encapsulation layer 5. The isolation structure 3 is disposed on one side of the substrate 1 and forms an isolation opening 30. The light-emitting units 41 are at least partially located within the isolation opening 30. The isolation structure 3 can be used to divide the sub-pixels of the display panel. The isolation structure 3 is disposed on the substrate 1 and forms multiple isolation openings 30 to isolate the light-emitting layer 4 to form mutually disconnected light-emitting units 41, thereby reducing crosstalk of charge carriers in the light-emitting layer 4, improving the display effect of the display panel, and eliminating the need for a precision mask in the fabrication of the light-emitting units 41, thus reducing the development and use of precision masks and lowering the manufacturing cost.

[0067] The composition and preparation of the isolation structure 3 are further described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072 for reference.

[0068] The first encapsulation layer 5 is disposed on the side of the light-emitting unit 41 facing away from the substrate 1. The first encapsulation layer 5 includes a first segment 51 and a second segment 52. The first segment 51 is located within the isolation opening 30 and disposed on the side of the light-emitting unit 41 facing away from the substrate 1. The second segment 52 is located on the side of the isolation structure 3 facing the isolation opening 30. The first encapsulation layer 5 can be used to encapsulate the light-emitting unit 41. By setting the surface of the first segment 51 facing away from the substrate 1 and the surface of the second segment 52 facing away from the isolation structure 3 to be at least partially connected to each other, and by forming a gap space 500 and a connection area 510 between the first segment 51 and the second segment 52, the first segment 51 can provide better support for the second segment 52, making it less likely for the second segment 52 to detach from the isolation structure 3, thereby improving the encapsulation effect of the first encapsulation layer 5 on the display panel.

[0069] The second sublayer 32 protrudes from the first sublayer 31 toward the isolation opening 30. Along the direction perpendicular to the substrate 1, the distance by which the second sublayer 32 protrudes from the first sublayer 31 toward the isolation opening 30 is a. The distance between the first boundary 5100 of the gap space 500 projecting away from the isolation structure 3 and the second boundary 5200 of the top surface 311 of the first sublayer 31 is b. By limiting b to a, the connection position between the first segment 51 and the second segment 52 can be located outside the first sublayer 31. This reduces the impact of the first segment 51 and the second segment 52 forming a sealing structure on the preparation of the first encapsulation layer 5. This allows the material for preparing the first encapsulation layer 5 to be deposited more uniformly on the isolation structure 3 to form a complete encapsulation structure, thereby improving the yield and performance of the display panel.

[0070] Optionally, the first encapsulation layer 5 can be prepared by chemical vapor deposition (CVD).

[0071] Reference Figure 3 In some optional embodiments, 1.5a ≤ b ≤ 2.5a. By limiting b to not less than 1.5a, along the direction perpendicular to the substrate 1, the distance between the connection area 510 and the second sub-layer 32 can be at least 0.5a, thereby further reducing the impact of the sealing structure on the fabrication of the first encapsulation layer 5. By limiting b to not greater than 2.5a, problems such as the connection position between the first sub-layer 31 and the second sub-layer 32 being too far from the second sub-layer 32, making it difficult to form a gap space 500, requiring more encapsulation material, and easily leading to encapsulation failure can be reduced. This embodiment further improves the encapsulation effect of the first encapsulation layer 5. For example, the value of b can be 1.5a, 1.8a, 2a, 2.2a, or 2.5a. Optionally, b = 2a.

[0072] Optionally, the display panel further includes a second encapsulation layer 6 and a third encapsulation layer 8 disposed on the side of the first encapsulation layer 5 facing away from the substrate 1. The material of the second encapsulation layer 6 may include an organic material to give it good flowability and make the surface of the second encapsulation layer 6 facing away from the substrate 1 relatively flat. The material of the third encapsulation layer 8 may include an inorganic material to further improve the encapsulation effect of the display panel. Optionally, the second encapsulation layer 6 can be prepared using inkjet printing (IJP) technology; the third encapsulation layer 8 can be prepared using chemical vapor deposition.

[0073] Optionally, the display panel also includes a touch layer, a polarizing layer, and a cover plate disposed on the third encapsulation layer 8. The touch layer is used to enable touch operation of the display panel, the polarizing layer is used to filter light to improve the display effect of the display panel, and the cover plate is used to protect the underlying film layer to improve the strength of the display panel.

[0074] Reference Figure 2 In some optional embodiments, the display panel further includes a first electrode layer 71 and a second electrode layer 72. The first electrode layer 71 includes a first electrode 711 disposed between the substrate 1 and the light-emitting unit 41. The second electrode layer 72 includes a second electrode 721 located between the light-emitting unit 41 and the encapsulation portion 50. One of the first electrode 711 and the second electrode 721 can serve as an anode, and the other can serve as a cathode to drive the light-emitting unit 41 to emit light. In this embodiment, the first electrode 711 is used as the anode of the display panel, and the second electrode 721 is used as the cathode of the display panel for illustrative purposes.

[0075] In some optional embodiments, the isolation structure 3 is made of a conductive material, and the second electrode 721 is connected to the isolation structure 3. The isolation structure 3 separates the second electrode layer 72 to form mutually spaced second electrodes 721. The mutually spaced second electrodes 721 are electrically connected through the isolation structure 3 to form a full-surface electrode, ensuring the normal light emission of the light-emitting unit 41. Optionally, the material of the first sub-layer 31 may include a conductive material, and the second electrode 721 may be connected to the first sub-layer 31, so that the second electrodes 721 of adjacent sub-pixels can be electrically connected through the first sub-layer 31.

[0076] Optionally, when depositing the light-emitting layer 4 and the second electrode layer 72 of the display panel, the second sub-layer 32 can block at least part of the material used to prepare the light-emitting layer 4 and the second electrode layer 72, so as to isolate the light-emitting layer 4 and the second electrode layer 72 between adjacent sub-pixels, and facilitate the formation of multiple spaced light-emitting units 41 located in the isolation opening 30 and multiple spaced second electrodes 721 located in the isolation opening 30. This eliminates the need to set a high-precision mask when depositing the light-emitting layer 4 and the second electrode layer 72 of the display panel. For example, it eliminates the need to set a high-precision metal mask (FMM) when depositing the light-emitting layer 4 and the second electrode layer 72, thereby reducing the production cost of the display panel.

[0077] Please see Figure 4 , Figure 4 This is a partial cross-sectional view of a display panel provided in another embodiment of this application.

[0078] Reference Figure 4In some optional embodiments, the isolation structure 3 further includes a third sub-layer 33 disposed on the side of the first sub-layer 31 facing the substrate 1, the third sub-layer 33 protruding from the first sub-layer 31 toward the isolation opening 30. The material of the third sub-layer 33 may include a conductive material, and the second electrode 721 may be connected to the third sub-layer 33, allowing electrical connection between the second electrodes 721 of adjacent sub-pixels through the third sub-layer 33. By configuring the third sub-layer 33 to protrude from the first sub-layer 31 toward the isolation opening 30, the third sub-layer 33 can have a larger size to facilitate connection with the second electrode 721.

[0079] Optionally, the light-emitting unit 41 may include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting structure, an electron injection layer (EIL), and an electron transport layer (ETL).

[0080] In some optional embodiments, an array layer may be included between the substrate 1 and the light-emitting layer 4. The array layer may include a driving circuit. For example, the array layer may include a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of the substrate 1 and stacked thereon. An insulating layer is disposed between adjacent conductive layers. Exemplarily, the pixel driving circuit disposed in the array layer includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode may be located in the first conductive layer, the second electrode may be located in the second conductive layer, and the source and drain may be located in the third conductive layer.

[0081] Combined with reference Figure 2 and Figure 3 In some optional embodiments, the display panel further includes a pixel definition layer 2 disposed on the side of the isolation structure 3 near the substrate 1. The pixel definition layer 2 includes a pixel limiting portion 21 and a plurality of pixel openings 22 formed by the pixel limiting portion 21. The orthographic projection of the pixel opening 22 on the substrate 1 is located within the orthographic projection of the isolation opening 30 on the substrate 1. At least a portion of the light-emitting units 41 are located within the pixel openings 22. The pixel limiting portion 21 has a first orthographic projection on the substrate 1, and the second sub-layer 32 has a second orthographic projection on the substrate 1. The first orthographic projection includes a projection portion located outside the second orthographic projection. The orthographic projection of the second segment 52 on the substrate 1 has a third boundary 5300 facing the isolation opening 30. The third boundary 5300 is located within the projection portion.

[0082] When the area where the pixel opening 22 is located is recessed, the light-emitting unit 41, the first encapsulation layer 5 and other structures are deposited on the pixel definition layer 2. They will adapt to the recess of the pixel opening 22. If the connection position between the second segment 52 and the first segment 51 is located in the recessed area of ​​the first segment 51, the connection area 510 will be set away from the second segment 52 due to the influence of the recessed structure. This may easily lead to the failure of the connection between the first segment 51 and the second segment 52, which in turn leads to the failure of the encapsulation of the first encapsulation layer 5.

[0083] In these alternative embodiments, by defining the third boundary 5300 as being located within the projection portion, i.e., the third boundary 5300 being located directly above the pixel defining portion 21, the recess of the pixel opening 22 is avoided, thereby improving the encapsulation reliability of the first encapsulation layer 5.

[0084] like Figure 3 As shown, in some optional embodiments, within the same isolation opening 30, the distance between the third boundary 5300 and the second boundary 5200 is c, where b < c.

[0085] In these embodiments, by limiting b to be less than c, the connection position between the second segment 52 and the first segment 51 can be made to avoid the pixel opening 22 region in the thickness direction of the display panel. That is, the orthographic projection of the connection region 510 on the substrate 1 and the orthographic projection of the pixel opening 22 on the substrate 1 do not overlap. This ensures that the connection region 510 is mainly located above the flat pixel limiting portion 21, reducing the impact of the pixel opening 22 structure on the connection between the second segment 52 and the first segment 51 to form a sealing structure. This allows the first segment 51 to support the second segment 52 more stably, improving the encapsulation reliability of the first encapsulation layer 5, and thus improving the yield and performance of the display panel. Optionally, the orthographic projection of the connection region 510 on the substrate 1 and the orthographic projection of the pixel opening 22 on the substrate 1 are spaced apart.

[0086] Optionally, the opening area of ​​the pixel opening 22 gradually increases along the direction away from the substrate 1. This arrangement of the pixel opening 22 facilitates the ramping of the light-emitting unit 41 and the second electrode 721, increases the light-emitting area of ​​the light-emitting unit 41, and facilitates the connection of the second electrode 721 with the isolation structure 3 to form a full-surface electrode. The first segment 51 located on the pixel opening 22 is recessed towards the pixel opening 22, that is, the top surface 311 of the first segment 51 has an inner surface located in the recessed region and an outer surface located outside the recessed region. By limiting b to be less than c, the connection region 510 can be located on the outer surface, avoiding the connection region 510 being located on the inner surface, which would lead to poor encapsulation.

[0087] Combined with reference Figure 3 and Figure 5Optionally, the orthographic projection of the connection region 510 onto the substrate 1 includes a first boundary 5100 and a fourth boundary 5400. The fourth boundary 5400 is located on the side of the first boundary 5100 away from the isolation structure 3, and the distance between the fourth boundary 5400 and the second boundary 5200 is d, where d ≤ c. Optionally, both the first boundary 5100 and the fourth boundary 5400 are annular, with the fourth boundary 5400 located within the first boundary 5100, meaning the size of the fourth boundary 5400 is smaller than the size of the first boundary 5100, and the first boundary 5100 is closer to the isolation structure 3 than the fourth boundary 5400.

[0088] In these optional embodiments, by limiting d≤c, the connection areas 510 can all be located on the pixel limiting portion 21, thereby avoiding the pixel opening 22. That is, the connection areas 510 are all located above the pixel limiting portion 21, so that the first segment 51 can more stably support the second segment 52, improving the packaging reliability of the first encapsulation layer 5, and thus improving the yield and performance of the display panel.

[0089] Reference Figure 2 In some optional embodiments, the first segment 51 includes a main body 511 and a support portion 512. The support portion 512 is located on the side of the main body 511 away from the substrate 1 and extends toward the second segment 52. The connecting region 510 is located on the support portion 512. The support portion 512 and the second segment 52 are interconnected so that the first segment 51 and the second segment 52 participate in enclosing and forming a gap space 500.

[0090] Optionally, the end of the main body 511 facing the isolation structure 3 is connected to the end of the second segment 52 facing the substrate 1, so that the gap space 500 can be formed by the main body 511, the support 512 and the second segment 52, and there are two connection points between the first segment 51 and the second segment 52, which can better improve the structural stability of the first encapsulation layer 5, and further make it less likely to detach from the isolation structure 3, thereby better improving the encapsulation effect of the first encapsulation layer 5 on the display panel.

[0091] Optional, refer to Figure 3 The main body 511 includes a first portion 5111 and a second portion 5112 that are interconnected. The orthographic projection of the first portion 5111 onto the substrate 1 is located within the orthographic projection of the pixel opening 22 onto the substrate 1, and the orthographic projection of the second portion 5112 onto the substrate 1 is located within the orthographic projection of the pixel limiting portion 21 onto the substrate 1. One end of the main body 511 facing the isolation structure 3 is interconnected with one end of the second segment 52 facing the substrate 1, which means that one end of the second portion 5112 facing the isolation structure 3 is interconnected with one end of the second segment 52 facing the substrate 1. The gap space 500 can be formed by the second portion 5112, the support portion 512, and the second segment 52.

[0092] Optionally, the orthographic projection of the support portion 512 on the substrate 1 may at least partially overlap with the orthographic projection of the pixel limiting portion 21 on the substrate 1, that is, at least part of the support portion 512 may be located on the side of the pixel limiting portion 21 away from the substrate 1, so that the pixel limiting portion 21 can raise the position of the support portion 512 to facilitate the connection between the support portion 512 and the second segment 52.

[0093] Reference Figure 3 In some optional embodiments, the second segment 52 includes a first portion 521 disposed on the side of the second sublayer 32 facing the isolation opening 30, the support portion 512 being interconnected with the first portion 521 to enclose and form a gap space 500, and the first portion 521 extending toward the side away from the substrate 1.

[0094] The extension of the first part 521 toward the side away from the substrate 1 can be understood as: the end of the first part 521 away from the substrate 1 can extend upward beyond the second sublayer 32.

[0095] Optionally, at least a portion of the gap space 500 is located between the second sub-layer 32 and the substrate 1. Since the second sub-layer 32 protrudes from the first sub-layer 31 toward the isolation opening 30, the first portion 521 disposed on the side of the second sub-layer 32 toward the isolation opening 30 can be more easily connected to the support portion 512, that is, the support portion 512 can easily support the second segment 52, so that the second segment 52 is less likely to detach from the isolation structure 3.

[0096] Optionally, the second segment 52 further includes a second part 522 disposed on the side of the first sub-layer 31 facing the isolation opening 30. The first part 521 is spaced apart from the main body 511, and the second part 522 is spaced apart from the support part 512. The first part 521, the second part 522, the support part 512 and the main body 511 enclose a gap space 500.

[0097] Optionally, the end of the second portion 522 facing away from the substrate 1 can be connected to the first portion 521. Specifically, the end of the second portion 522 facing away from the substrate 1 can be integrally connected to the first portion 521 covering the surface of the second sublayer 32 facing the substrate 1. Optionally, the end of the second portion 522 facing the substrate 1 can be interconnected with the end of the main body portion 511 facing the isolation structure 3. For example, the end of the second portion 522 facing the substrate 1 can be interconnected with the end of the second segment 5112 facing the isolation structure 3. Optionally, the gap space 500 can be formed by the first portion 521, the second portion 522, the second segment 5112, and the support portion 512.

[0098] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of the first segment in a display panel provided in an embodiment of this application.

[0099] Combined with reference Figures 2 to 5 In some optional embodiments, the support portion 512 is annular in shape when projected onto the substrate 1, and the connecting region 510 is connected to the second segment 52 so that the first segment 51 and the second segment 52 enclose a gap space 500.

[0100] Optionally, the orthographic projection of the support portion 512 onto the substrate 1 is annular, meaning that the orthographic projection of the support portion 512 onto the substrate 1 is a closed annular shape, so as to form a sealed gap space 500. Optionally, the gap space 500 is a closed structure, wherein the sealed gap space 500 formed by the first segment 51 and the second segment 52 may not be connected to other external spaces, so as to further improve the structural stability of the first segment 51 and the second segment 52.

[0101] Optionally, the orthographic projection of the support portion 512 on the substrate 1 may surround the orthographic projection of the pixel opening 22 on the substrate 1. Optionally, the orthographic projection of the second segment 52 on the substrate 1 may surround the orthographic projection of the support portion 512 on the substrate 1.

[0102] In these optional embodiments, by setting the orthographic projection shape of the support portion 512 on the substrate 1 to be annular, the support portion 512 in the isolation opening 30 and the second segment 52 on the periphery of the isolation structure 3 have a large connection area, so that the support portion 512 in the isolation opening 30 can provide good support for the second segment 52 on the periphery of the isolation structure 3, thereby improving the supporting effect of the support portion 512 on the second segment 52, making it less likely for the first segment 51 to detach from the isolation structure 3, and thus improving the encapsulation effect of the first encapsulation layer 5 on the display panel.

[0103] Please see Figure 6 , Figure 6 This is a partial cross-sectional view of a display panel provided in another embodiment of this application.

[0104] Reference Figure 6 In some optional embodiments, the encapsulation portion 50 further includes a third segment 53, which is located on the side of the second sublayer 32 facing away from the substrate 1. One end of the second segment 52 extends toward the side facing away from the substrate 1 and connects to the third segment 53. The third segment 53 is spaced apart from the isolation structure 3. The third segment 53, located on the side of the isolation structure 3 facing away from the substrate 1, can better improve the path for moisture to invade the light-emitting unit 41, thereby improving the encapsulation effect of the first encapsulation layer 5 on the light-emitting unit 41. Optionally, the third segment 53 is connected to the end of the second segment 52 facing away from the substrate 1.

[0105] Optionally, a support structure 61 may be filled between the third segment 53 and the isolation structure 3. The support structure 61 filled between the third segment 53 and the isolation structure 3 can provide better restraint for the third segment 53. For example, the support structure 61 filled between the third segment 53 and the isolation structure 3 can be used to support the third segment 53, making it less likely for the third segment 53 to break and fall off towards the isolation structure 3, thereby improving the structural stability of the first encapsulation layer 5.

[0106] Optionally, at least a portion of the material of the second encapsulation layer 6 may extend between the third segment 53 and the isolation structure 3 to form a support structure 61, so that a portion of the material of the second encapsulation layer 6 may also be used to support the third segment 53.

[0107] Optionally, at least part of the second encapsulation layer 6 may also be located on the side of the third segment 53 away from the isolation structure 3, so that the third segment 53 can be better wrapped by the second encapsulation layer 6, so as to further enhance the limiting effect of the second encapsulation layer 6 on the third segment 53, so that the second encapsulation layer 6 can restrict the third segment 53 from falling off and breaking towards the pixel opening 22, thereby improving the structural stability of the first encapsulation layer 5.

[0108] Please refer to the following: Figures 1 to 6An embodiment of the first aspect of this application also provides a display panel, including a substrate 1, a pixel definition layer 2, an isolation structure 3, a light-emitting layer 4, and a first encapsulation layer 5; the pixel definition layer 2 includes a pixel defining portion 21 and a pixel opening 22 located on one side of the substrate 1; the isolation structure 3 is disposed on the side of the pixel defining portion 21 away from the substrate 1 and surrounds to form a plurality of isolation openings 30, the orthographic projection of the pixel opening 22 on the substrate 1 is located within the orthographic projection of the isolation opening 30 on the substrate 1, the isolation structure 3 includes a first sub-layer 31 and a second sub-layer 32 located on the side of the first sub-layer 31 away from the substrate 1, the first sub-layer 31 includes a top surface 311 away from the substrate 1 and a sidewall facing the opening, the second sub-layer 32 protrudes from the sidewall toward the isolation opening 30; the light-emitting layer 4 includes a plurality of light-emitting units 41, the light-emitting units 41 being at least partially located within the pixel opening 22; the first The encapsulation layer 5 includes a plurality of encapsulation portions 50 for encapsulating the light-emitting unit 41. Each encapsulation portion 50 includes a first segment 51 and a second segment 52 that are interconnected. The first segment 51 is located within the isolation opening 30 and is disposed on the side of the light-emitting unit 41 facing away from the substrate 1. The second segment 52 is located on the side of the isolation structure 3 facing away from the isolation opening 30. The surface of the first segment 51 facing away from the substrate 1 and the surface of the second segment 52 facing away from the isolation structure 3 are at least partially interconnected to enclose and form a gap space 500. The pixel defining portion 21 has a first orthographic projection on the substrate 1, and the second sublayer 32 has a second orthographic projection on the substrate 1. The first orthographic projection includes a projection portion located outside the second orthographic projection. The orthographic projection of the second segment 52 on the substrate 1 has a third boundary 5300 facing away from the isolation opening 30, and the third boundary 5300 is located within the projection portion.

[0109] In a display panel provided in this application embodiment, the display panel includes a substrate 1, a pixel defining layer 2, an isolation structure 3, light-emitting units 41, and a first encapsulation layer 5. A pixel defining portion 21 is disposed on one side of the substrate 1, and the isolation structure 3 is disposed on the side of the pixel defining portion 21 opposite to the substrate 1, forming an isolation opening 30. The orthographic projection of the pixel opening 22 on the substrate 1 lies within the orthographic projection of the isolation opening 30 on the substrate 1. The light-emitting units 41 are at least partially located within the pixel opening 22. The isolation structure 3 can be used to divide the sub-pixels of the display panel. The isolation structure 3 is disposed on the substrate 1 and forms a plurality of isolation openings 30 to isolate the light-emitting layer 4, forming mutually disconnected light-emitting units 41, thereby reducing crosstalk of charge carriers in the light-emitting layer 4, improving the display effect of the display panel, and eliminating the need for a precision mask in fabricating the light-emitting units 41, thus reducing the development and use of precision masks and lowering manufacturing costs.

[0110] The area where the pixel opening 22 is located forms a recess. When structures such as the light-emitting unit 41 and the first encapsulation layer 5 are deposited on the pixel definition layer 2, they adapt to the recess of the pixel opening 22. If the connection position between the second segment 52 and the first segment 51 is located in the recessed area of ​​the first segment 51, the connection area 510 is set away from the second segment 52 due to the influence of the recessed structure, which can easily lead to the failure of the connection between the first segment 51 and the second segment 52, and thus the failure of the encapsulation of the first encapsulation layer 5. In this embodiment, by limiting the third boundary 5300 to be located within the projection portion, that is, the third boundary 5300 is located directly above the pixel definition portion 21, the recess of the pixel opening 22 is avoided, thereby improving the encapsulation reliability of the first encapsulation layer 5.

[0111] Optionally, the gap space 500 has a first boundary 5100 away from the isolation structure 3 in the orthographic projection of the substrate 1. This can be understood as: the connection point between the side surface of the first segment 51 away from the substrate 1 and the side surface of the second segment 52 away from the isolation structure 3 is defined as the connection area 510. The orthographic projection of the connection area 510 on the substrate 1 includes two boundaries, wherein the boundary closer to the isolation structure 3 coincides with the first boundary 5100, that is, the two are the same boundary.

[0112] In some optional embodiments, within the same isolation opening 30, the gap space 500 has a first boundary 5100 in the orthographic projection of the substrate 1 that is away from the isolation structure 3, and the top surface 311 has a second boundary 5200 in the orthographic projection of the substrate 1. The distance between the first boundary 5100 and the second boundary 5200 is b, and the distance between the third boundary 5300 and the second boundary 5200 is c, where b < c.

[0113] In these optional embodiments, by limiting b to be less than c, the connection position between the second segment 52 and the first segment 51 can be made to avoid the pixel opening 22 area in the thickness direction of the display panel. That is, there is a non-overlapping part between the orthographic projection of the connection area 510 on the substrate 1 and the orthographic projection of the pixel opening 22 on the substrate 1. This makes the connection area 510 mainly located above the flat pixel limiting part 21, reducing the influence of the pixel opening 22 structure on the connection between the second segment 52 and the first segment 51 to form a sealing structure. This allows the first segment 51 to support the second segment 52 more stably, improving the encapsulation reliability of the first encapsulation layer 5, and thus improving the yield and performance of the display panel.

[0114] Optionally, the orthographic projection of the connection region 510 onto the substrate 1 further includes a fourth boundary 5400. The fourth boundary 5400 is located on the side of the first boundary 5100 away from the isolation structure 3, and the distance between the fourth boundary 5400 and the second boundary 5200 is d, where d ≤ c. Optionally, both the first boundary 5100 and the fourth boundary 5400 are annular, with the fourth boundary 5400 located within the first boundary 5100. That is, the size of the fourth boundary 5400 is smaller than the size of the first boundary 5100, and the first boundary 5100 is closer to the isolation structure 3 than the fourth boundary 5400.

[0115] In these optional embodiments, by limiting d≤c, the connection areas 510 can all be located on the pixel limiting portion 21, thereby avoiding the pixel opening 22. That is, the connection areas 510 are all located above the pixel limiting portion 21, so that the first segment 51 can more stably support the second segment 52, improving the packaging reliability of the first encapsulation layer 5, and thus improving the yield and performance of the display panel.

[0116] Optionally, the display panel provided in the first aspect of this application can be the display panel in any of the foregoing embodiments. Therefore, the display panel provided in the embodiments of this application can have the beneficial effects of the display panel in any of the foregoing embodiments, and this application will not elaborate further on it. For example, the substrate 1 can be the substrate 1 in any of the foregoing embodiments. For example, the encapsulation portion 50 can be the encapsulation portion 50 in any of the foregoing embodiments. For example, the display panel may also include the first electrode layer 71 and the second electrode layer 72 in any of the foregoing embodiments. For example, the isolation structure 3 can be the isolation structure 3 in any of the foregoing embodiments. The isolation structure 3 may include the first sub-layer 31, the second sub-layer 32 and the third sub-layer 33 in any of the foregoing embodiments, so that the isolation structure 3 can be used to isolate the materials of the light-emitting layer 4 and the second electrode layer 72 when preparing the light-emitting layer 4 and the second electrode layer 72. The second electrodes 721 in adjacent isolation openings 30 can also be electrically connected to each other through the isolation structure 3 to form surface electrodes. For example, the display panel may also include the pixel opening 22 in any of the foregoing embodiments. The size of the pixel opening 22 gradually increases in the direction away from the substrate 1 to facilitate the ramping of the light-emitting unit 41 and the second electrode 721, thereby increasing the light-emitting area of ​​the light-emitting unit 41 and facilitating the connection between the second electrode 721 and the isolation structure 3 to form a full-surface electrode. For example, the display panel may also include the second encapsulation layer 6 and the third encapsulation layer 8 in any of the foregoing embodiments to improve the flatness of the display panel and further enhance the encapsulation effect.

[0117] An embodiment of the second aspect of this application provides a display device that includes the display panel of any of the above embodiments. Since the display device provided in the second aspect of this application includes the display panel of any of the embodiments of the first aspect, it possesses the beneficial effects of the display panel of any of the embodiments of the first aspect, which will not be elaborated further here.

[0118] 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.

[0119] 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, include: substrate; An isolation structure is disposed on one side of the substrate and surrounds to form a plurality of isolation openings. The isolation structure includes a first sub-layer and a second sub-layer located on the side of the first sub-layer facing away from the substrate. The first sub-layer includes a top surface facing away from the substrate and a sidewall facing the isolation opening. The second sub-layer protrudes from the sidewall toward the isolation opening by a length of a. Multiple light-emitting units, wherein at least part of the light-emitting units are located within the isolation opening; The first encapsulation layer includes a plurality of encapsulation portions, each encapsulation portion including a first segment and a second segment connected to each other. The first segment is located within the isolation opening and disposed on the side of the light-emitting unit away from the substrate. The second segment is located on the side of the isolation structure facing the isolation opening. The surface of the first segment away from the substrate and the surface of the second segment away from the isolation structure are at least partially connected to each other to enclose and form a gap space. Wherein, within the same isolation opening, the gap space has a first boundary in the orthographic projection of the substrate that is far from the isolation structure, and the top surface has a second boundary in the orthographic projection of the substrate, and the distance between the first boundary and the second boundary is b, where b>a; The display panel further includes a pixel defining portion disposed on the side of the isolation structure near the substrate. The pixel defining portion has a first orthographic projection on the substrate, and the second sub-layer has a second orthographic projection on the substrate. The first orthographic projection includes a projection portion located outside the second orthographic projection. The second segment has a third boundary facing the isolation opening in its orthographic projection on the substrate, and the third boundary is located within the projection portion. The connection point between the surface of the first segment facing away from the substrate and the surface of the second segment facing away from the isolation structure is a connection area. The orthographic projection of the connection area onto the substrate includes the first boundary and the fourth boundary. The fourth boundary is located on the side of the first boundary facing away from the isolation structure. The orthographic projection of the connection area onto the substrate and the orthographic projection of the pixel opening onto the substrate are spaced apart.

2. The display panel according to claim 1, characterized in that, 1.5a≤b≤2.5a.

3. The display panel according to claim 2, characterized in that, b = 2a.

4. The display panel according to claim 1, characterized in that, Within the same isolation opening, the distance between the third boundary and the second boundary is c, where b < c.

5. The display panel according to claim 4, characterized in that, The distance between the fourth boundary and the second boundary is d, where d ≤ c.

6. The display panel according to claim 1, characterized in that, The first segment includes a main body and a support portion. The support portion is located on the side of the main body away from the substrate and extends toward the second segment. The support portion is connected to the second segment.

7. The display panel according to claim 6, characterized in that, The end of the main body facing the isolation structure is connected to the end of the second segment facing the substrate.

8. The display panel according to claim 1, characterized in that, The pixel limiting portion encloses and forms a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the opening area of ​​the pixel openings gradually increases along the direction away from the substrate.

9. The display panel according to claim 6, characterized in that, The main body includes a first portion and a second portion that are connected to each other. The first portion is projected onto the substrate in the orthographic projection of the pixel opening onto the substrate, and the second portion is projected onto the substrate in the orthographic projection of the pixel defining portion onto the substrate.

10. The display panel according to claim 6, characterized in that, The second segment includes a first portion disposed on the side of the second sublayer facing the isolation opening, the support portion being interconnected with the first portion to enclose and form the gap space, the first portion extending toward the side away from the substrate.

11. The display panel according to claim 10, characterized in that, At least a portion of the gap space is located between the second sublayer and the substrate.

12. The display panel according to claim 10, characterized in that, The second segment further includes a second part disposed on the side of the first sub-layer facing the isolation opening. The first part is spaced apart from the main body, and the second part is spaced apart from the support part. The first part, the second part, the support part, and the main body form the gap space.

13. The display panel according to any one of claims 1 to 12, characterized in that, The encapsulation portion further includes a third segment located on the side of the second sublayer away from the substrate. One end of the second segment extends toward the side away from the substrate and connects to the third segment. The third segment is spaced apart from the isolation structure, and a support structure fills the space between the third segment and the isolation structure.

14. The display panel according to claim 13, characterized in that, The display panel further includes a second encapsulation layer disposed on the side of the first encapsulation layer opposite to the substrate, and at least a portion of the material of the second encapsulation layer extends between the third segment and the isolation structure to form the support structure.

15. The display panel according to claim 14, characterized in that, At least a portion of the second encapsulation layer is located on the side of the third segment opposite to the isolation structure.

16. The display panel according to claim 14, characterized in that, The material of the first encapsulation layer includes inorganic materials, and / or the material of the second encapsulation layer includes organic materials.

17. The display panel according to any one of claims 1 to 12, characterized in that, The isolation structure further includes a third sublayer disposed on the side of the first sublayer facing the substrate, the third sublayer protruding from the first sublayer toward the isolation opening.

18. The display panel according to any one of claims 1 to 12, characterized in that, The gap space is a closed structure.

19. A display panel, characterized in that, include: substrate; A pixel limiting portion is disposed on one side of the substrate; An isolation structure is located on the side of the pixel defining portion away from the substrate and surrounds and forms a plurality of isolation openings. The isolation structure includes a first sub-layer and a second sub-layer located on the side of the first sub-layer away from the substrate. The first sub-layer includes a top surface away from the substrate and a sidewall facing the isolation opening. The second sub-layer protrudes from the sidewall toward the isolation opening. Multiple light-emitting units, wherein at least part of the light-emitting units are located within the isolation opening; The first encapsulation layer includes a plurality of encapsulation portions, each encapsulation portion including a first segment and a second segment connected to each other. The first segment is located within the isolation opening and disposed on the side of the light-emitting unit away from the substrate. The second segment is located on the side of the isolation structure facing the isolation opening. The surface of the first segment away from the substrate and the surface of the second segment away from the isolation structure are at least partially connected to each other to enclose and form a gap space. Wherein, the pixel defining portion has a first orthographic projection on the substrate, the second sublayer has a second orthographic projection on the substrate, and the first orthographic projection includes a projection portion located outside the second orthographic projection; The second segment has a third boundary in its orthographic projection onto the substrate, which faces the isolation opening and is located within the projection portion; The connection point between the surface of the first segment facing away from the substrate and the surface of the second segment facing away from the isolation structure is a connection area. The orthographic projection of the connection area onto the substrate includes a first boundary and a fourth boundary. The fourth boundary is located on the side of the first boundary facing away from the isolation structure. The orthographic projection of the connection area onto the substrate and the orthographic projection of the pixel opening onto the substrate are spaced apart.

20. The display panel according to claim 19, characterized in that, Within the same isolation opening, the gap space has a first boundary in the orthographic projection of the substrate that is far from the isolation structure, and the top surface has a second boundary in the orthographic projection of the substrate. The distance between the first boundary and the second boundary is b, and the distance between the third boundary and the second boundary is c, where b < c.

21. The display panel according to claim 20, characterized in that, The distance between the fourth boundary and the second boundary is d, where d ≤ c.

22. The display panel according to claim 19, characterized in that, The pixel limiting portion encloses and forms a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the opening area of ​​the pixel openings gradually increases along the direction away from the substrate.

23. The display panel according to claim 22, characterized in that, The first segment includes a main body and a support portion. The support portion is located on the side of the main body away from the substrate and extends toward the second segment. The support portion is connected to the second segment.

24. The display panel according to claim 23, characterized in that, The end of the main body facing the isolation structure is connected to the end of the second segment facing the substrate.

25. The display panel according to claim 24, characterized in that, The main body includes a first portion and a second portion that are connected to each other. The first portion is projected onto the substrate in the orthographic projection of the pixel opening onto the substrate, and the second portion is projected onto the substrate in the orthographic projection of the pixel defining portion onto the substrate.

26. The display panel according to claim 23, characterized in that, The second segment includes a first portion disposed on the side of the second sublayer facing the isolation opening, the support portion being interconnected with the first portion to enclose and form the gap space, the first portion extending toward the side away from the substrate.

27. The display panel according to claim 26, characterized in that, At least a portion of the gap space is located between the second sublayer and the substrate.

28. The display panel according to claim 26, characterized in that, The second segment further includes a second part disposed on the side of the first sub-layer facing the isolation opening. The first part is spaced apart from the main body, and the second part is spaced apart from the support part. The first part, the second part, the support part, and the main body form the gap space.

29. The display panel according to any one of claims 19 to 28, characterized in that, The isolation structure further includes a third sublayer disposed on the side of the first sublayer facing the substrate, the third sublayer protruding from the first sublayer toward the isolation opening.

30. The display panel according to any one of claims 19 to 28, characterized in that, The gap space is a closed structure.

31. The display panel according to any one of claims 19 to 28, characterized in that, The encapsulation portion further includes a third segment located on the side of the second sublayer away from the substrate. One end of the second segment extends toward the side away from the substrate and connects to the third segment. The third segment is spaced apart from the isolation structure, and a support structure fills the space between the third segment and the isolation structure.

32. The display panel according to claim 31, characterized in that, The display panel further includes a second encapsulation layer disposed on the side of the first encapsulation layer opposite to the substrate, and at least a portion of the material of the second encapsulation layer extends between the third segment and the isolation structure to form the support structure.

33. The display panel according to claim 32, characterized in that, At least a portion of the second encapsulation layer is located on the side of the third segment opposite to the isolation structure.

34. The display panel according to claim 32, characterized in that, The material of the first encapsulation layer includes inorganic materials, and / or the material of the second encapsulation layer includes organic materials.

35. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 34.

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