Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, and the display panel comprises a substrate; the isolation structure is arranged on one side of the substrate, a plurality of isolation openings are defined by the isolation structure, and the isolation structure comprises a first sub-layer close to one side of the substrate; at least part of the light-emitting functional layer is located in the isolation opening, and a gap is formed between the light-emitting functional layer and the first sub-layer in the direction parallel to the plane where the substrate is located; the first electrode layer is arranged on the side, away from the substrate, of the light-emitting functional layer and connected with the first sub-layer. According to the display panel, electric signals can be transmitted to the first electrode layer through the first sub-layer, and the light-emitting function layer and the first sub-layer are prevented from being connected by limiting the gap between the light-emitting function layer and the first sub-layer in the direction parallel to the plane where the substrate is located, so that the problem of transverse electric leakage is avoided, and the use performance of the display panel is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display panel and a display device. Background Art

[0002] In the process of fabricating a traditional display panel, light-emitting pixel patterning is usually achieved through a fine metal mask (FMM). The FMM technology is mature and has rich mass production experience. However, the FMM technology also has problems such as limited precision, high development cost, and long development cycle. The fine metal maskless technology eliminates the limitations of the traditional OLED process on the display screen size, resolution, and other screen performance, and has the advantages of high performance, full-domain size, and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, CN118781966A record the relevant content of the fine metal maskless technology for reference. Summary of the Invention

[0003] An embodiment of this application provides a display panel and a display device, aiming to improve the performance of the display panel.

[0004] An embodiment of one aspect of this application provides a display panel, including: a substrate; an isolation structure disposed on one side of the substrate and enclosing a plurality of isolated openings, the isolation structure including a first sub-layer close to the substrate side; a light-emitting functional layer at least partially located within the isolated openings, and in a direction parallel to the plane where the substrate is located, there is a gap between the light-emitting functional layer and the first sub-layer; a first electrode layer disposed on the side of the light-emitting functional layer facing away from the substrate and connected to the first sub-layer.

[0005] According to any one of the embodiments of one aspect of this application, in the direction from the substrate to the isolation structure, the cross-sectional area of the first sub-layer shows an increasing trend; preferably, in a direction perpendicular to the plane where the substrate is located, the cross-section of the first sub-layer is trapezoidal or T-shaped; preferably, in a direction perpendicular to the plane where the substrate is located, the thickness of the first sub-layer is greater than 0 and less than or equal to 400 nm.

[0006] According to any one of the embodiments described in one aspect of the present application, in a direction perpendicular to the plane of the substrate, the first sub-layer includes opposite first and second surfaces and a first side surface connecting the first and second surfaces. The first surface is disposed closer to the substrate than the second surface; the orthographic projection area of the first surface on the substrate is smaller than the orthographic projection area of the second surface on the substrate; the angle between the first side surface and the second surface is an acute angle; preferably, the angle between the first side surface and the second surface is greater than or equal to 30° and less than or equal to 60°; preferably, at least part of the first side surface and the second surface are in contact with the first electrode layer; preferably, the first electrode layer fills the gap between the light-emitting functional layer and the first sub-layer; preferably, in a direction perpendicular to the plane of the substrate, the cross-section of the first sub-layer is trapezoidal in an inverted shape.

[0007] According to any one of the embodiments described in one aspect of the present application, in a direction perpendicular to the plane of the substrate, the first sub-layer includes opposite first and second surfaces and a first side surface connecting the first and second surfaces. The first surface is disposed closer to the substrate than the second surface; the orthographic projection area of the first surface on the substrate is larger than the orthographic projection area of the second surface on the substrate. In a direction parallel to the plane of the substrate, there is a gap between the first side surface and the side surface of the light-emitting functional layer facing the isolation structure; preferably, at least part of the first side surface and the second surface are in contact with the first electrode layer; preferably, in a direction perpendicular to the plane of the substrate, the cross-section of the first sub-layer is trapezoidal.

[0008] According to any one of the embodiments described in one aspect of the present application, it further includes a first insulating portion, and the first insulating portion is at least disposed in the gap between the first sub-layer and the first electrode layer; preferably, the first insulating portion is in at least partial contact with the side of the first sub-layer facing the light-emitting functional layer; preferably, in a direction perpendicular to the plane of the substrate, the cross-section of the first insulating portion is trapezoidal; preferably, in a direction perpendicular to the plane of the substrate, the height of the side surface of the first insulating portion facing away from the substrate is lower than the height of the side surface of the first sub-layer facing away from the substrate; preferably, the first electrode layer covers the side surface of the first insulating portion facing away from the substrate and extends to the side of the first sub-layer facing away from the substrate; preferably, the material of the first insulating portion includes an inorganic material.

[0009] According to any one of the embodiments described in one aspect of the present application, it further includes a first insulating portion. The first insulating portion is at least disposed in the interval between the first sub-layer and the first electrode layer. Along the direction perpendicular to the plane where the substrate is located, the first insulating portion includes opposite third surfaces and fourth surfaces, and two second side surfaces connecting the third surfaces and the fourth surfaces. The third surface is disposed closer to the substrate than the fourth surface; one of the two second side surfaces is in contact with the first side surface, and the other second side surface is in contact with a side portion of the light-emitting functional layer facing the isolation structure.

[0010] According to any one of the embodiments described in one aspect of the present application, it further includes a first insulating portion. The first insulating portion is at least disposed in the interval between the first sub-layer and the first electrode layer. Along the direction perpendicular to the plane where the substrate is located, the first insulating portion includes opposite third surfaces and fourth surfaces, and two second side surfaces connecting the third surfaces and the fourth surfaces. The third surface is disposed closer to the substrate than the fourth surface; there is a gap between the second side surface close to the first sub-layer and the side surface on the side facing the light-emitting functional layer, and part of the first electrode layer fills the gap.

[0011] According to any one of the embodiments described in one aspect of the present application, along the direction away from the substrate, the isolation structure includes a second sub-layer and a third sub-layer which are disposed on the side of the first sub-layer away from the substrate and are stacked. The orthographic projection of the second sub-layer on the substrate is located within the orthographic projection of the first sub-layer on the substrate, and the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate; preferably, the first sub-layer and the second sub-layer include conductive materials; preferably, a second electrode layer is disposed on the side of the light-emitting functional layer facing the substrate; preferably, the display panel further includes a pixel defining layer. The pixel defining layer is disposed on the side of the isolation structure facing the substrate. The pixel defining layer encloses and forms a plurality of pixel openings, and the pixel openings are communicated with the corresponding isolation openings, and at least part of the light-emitting functional layer is located in each pixel opening.

[0012] An embodiment of another aspect of the present application provides a display panel, including: a substrate; an isolation structure disposed on one side of the substrate and enclosing a plurality of isolation openings, the isolation structure including a first sub-layer close to one side of the substrate; a light-emitting functional layer at least partially located within the isolation openings, and in a direction parallel to the plane where the substrate is located, a first insulating portion is provided between the light-emitting functional layer and the first sub-layer, and in a direction perpendicular to the plane where the substrate is located, the surface of the first insulating portion facing away from the substrate and the surface of the light-emitting functional layer facing away from the substrate are flush, or the surface of the first insulating portion facing away from the substrate is disposed farther from the substrate than the surface of the light-emitting functional layer facing away from the substrate; a first electrode layer disposed on the side of the light-emitting functional layer facing away from the substrate and connected to the first sub-layer.

[0013] According to any one of the embodiments of another aspect of the present application, in a direction from the substrate towards the isolation structure, the cross-sectional area of the first sub-layer shows an increasing trend; preferably, in a direction perpendicular to the plane where the substrate is located, the cross-section of the first sub-layer is trapezoidal or T-shaped in an inverted manner.

[0014] According to any one of the embodiments of another aspect of the present application, in a direction perpendicular to the plane where the substrate is located, the first sub-layer includes opposite first and second surfaces and a first side surface connecting the first and second surfaces, and the first surface is disposed closer to the substrate than the second surface; the orthographic projection area of the first surface on the substrate is smaller than the orthographic projection area of the second surface on the substrate; the angle between the first side surface and the second surface is an acute angle; preferably, the angle between the first side surface and the second surface is greater than or equal to 30° and less than or equal to 60°; preferably, the first side surface and the second surface are connected to the first electrode layer; preferably, in a direction perpendicular to the plane where the substrate is located, the cross-section of the first sub-layer is trapezoidal in an inverted manner.

[0015] According to any one of the embodiments of another aspect of the present application, the first insulating portion is at least disposed within the interval between the first sub-layer and the first electrode layer, and in a direction perpendicular to the plane where the substrate is located, the first insulating portion includes opposite third and fourth surfaces and two second side surfaces connecting the third and fourth surfaces, and the third surface is disposed closer to the substrate than the fourth surface; one of the second side surfaces is connected to the first side surface, and the other second side surface is connected to the side surface of the light-emitting functional layer facing the isolation structure.

[0016] According to any one of the embodiments described in another aspect of the present application, in a direction perpendicular to the plane of the substrate, the first sub-layer includes opposite first and second surfaces and a first side surface connecting the first and second surfaces, and the first surface is disposed closer to the substrate than the second surface; the orthographic projection area of the first surface on the substrate is larger than the orthographic projection area of the second surface on the substrate, and in a direction parallel to the plane of the substrate, there is a gap between the first side surface and the side surface of the light-emitting functional layer facing the isolation structure; preferably, the first side surface, the second surface are in contact with the first electrode layer; preferably, in a direction perpendicular to the plane of the substrate, the cross-section of the first sub-layer is trapezoidal.

[0017] According to any one of the embodiments described in another aspect of the present application, in a direction away from the substrate, the isolation structure includes a second sub-layer and a third sub-layer which are disposed on the side of the first sub-layer away from the substrate and are stacked, the orthographic projection of the second sub-layer on the substrate is located within the orthographic projection of the first sub-layer on the substrate, and the orthographic projection of the second sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate; preferably, the materials of the first sub-layer and the second sub-layer include conductive materials; preferably, a second electrode layer is provided on the side of the light-emitting functional layer facing the substrate; preferably, the display panel further includes a pixel defining layer which is disposed on the side of the isolation structure close to the substrate, the pixel defining layer encloses a plurality of pixel openings, the pixel openings communicate with the corresponding isolation openings, and at least a part of the light-emitting functional layer is located within each pixel opening; preferably, the first insulating portion is disposed on the side of the pixel defining layer away from the substrate; preferably, the first insulating portion is disposed on the side of the pixel defining layer away from the substrate, and a part of the first insulating portion extends to the side of the pixel defining layer close to the light-emitting functional layer.

[0018] An embodiment of another aspect of the present application provides a display device, including: the display panel in any one of the above embodiments.

[0019] In the display panel provided by the embodiment of the present application, it includes a substrate, an isolation structure, a light-emitting functional layer and a first electrode layer. The first electrode layer is in contact with the first sub-layer. An electrical signal can be transmitted from the first sub-layer to the first electrode layer. By restricting the direction parallel to the plane of the substrate, there is a gap between the light-emitting functional layer and the first sub-layer to avoid connection between the light-emitting functional layer and the first sub-layer, thereby avoiding the problem of lateral leakage and improving the performance of the display panel. Description of the Drawings

[0020] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which like or similar reference numerals denote like or similar features.

[0021] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0022] Figure 2 is Figure 1 a partial enlarged structural diagram of the A position of

[0023] Figure 3 a cross-sectional view taken along the line A-A in an example Figure 2 of

[0024] Figure 4 is a schematic structural diagram of an isolation structure provided by an embodiment of the present application;

[0025] Figure 5 is another cross-sectional view taken along the line A-A in an example Figure 2 of

[0026] Figure 6 is a schematic structural diagram of an isolation structure and a first insulating portion provided by an embodiment of the present application;

[0027] Figure 7 is yet another cross-sectional view taken along the line A-A in an example Figure 2 of

[0028] Figure 8 is yet another cross-sectional view taken along the line A-A in an example Figure 2 of

[0029] Explanation of reference numerals:

[0030] 100, substrate;

[0031] 200, isolation structure; 201, first sublayer; 202, second sublayer; 203, third sublayer;

[0032] 300, light-emitting functional layer; 400, first electrode layer; 500, second electrode layer; 600, pixel defining layer; 601, pixel opening; 700, first insulating portion;

[0033] F1, first surface; F2, second surface; F3, third surface; F4, fourth surface; K, isolation opening; C1, first side surface; C2, second side surface. Detailed implementation manners

[0034] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only provided to better understand the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary obscurity to the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0035] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] The orientation words appearing in the following description are all the directions shown in the figures, and do not specifically limit the structure of the embodiments of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] For a better understanding of the present application, the following will describe in detail the display panel and the display device according to the embodiments of the present application in conjunction with Figures 1 to 8 the display panel and the display device according to the embodiments of the present application.

[0038] Please refer to Figures 1 to 3 together with Figure 1 which is a schematic structural diagram of a display panel provided by an embodiment of the present application; Figure 2 is Figure 1 a partial enlarged structural diagram of the A position of Figure 3 and Figure 2 is a cross-sectional view taken along the line A-A in an example of

[0039] ​The present application provides a display panel, including: a substrate 100; an isolation structure 200 disposed on one side of the substrate 100 and enclosing a plurality of isolation openings K, the isolation structure 200 including a first sub-layer 201 close to the substrate 100; a light-emitting functional layer 300 at least partially located within the isolation openings K, and having a gap between the light-emitting functional layer 300 and the first sub-layer 201 in a direction parallel to the plane where the substrate 100 is located; and a first electrode layer 400 disposed on the side of the light-emitting functional layer 300 facing away from the substrate 100 and connected to the first sub-layer 201.

[0040] The display panel provided by the embodiment of the present invention includes a substrate 100, an isolation structure 200, a light-emitting functional layer 300, and a first electrode layer 400. The first electrode layer 400 is connected to the first sub-layer 201, and an electrical signal can be transmitted from the first sub-layer 201 to the first electrode layer 400. By restricting the direction parallel to the plane where the substrate 100 is located, there is a gap between the light-emitting functional layer 300 and the first sub-layer 201 to prevent the light-emitting functional layer 300 from being connected to the first sub-layer 201, thereby avoiding the problem of lateral leakage and improving the performance of the display panel.

[0041] Optionally, the substrate 100 may include a substrate and an array substrate 100, and the array substrate 100 may include a driving circuit. For example, the array substrate 100 may include a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of the substrate and stacked. Insulating layers are provided between adjacent conductive layers. Exemplarily, the pixel driving circuit disposed on the array substrate 100 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 plate and a second electrode plate. As an example, the gate and the first electrode plate may be located on the first conductive layer, the second electrode plate may be located on the second conductive layer, and the source and the drain may be located on the third conductive layer.

[0042] Optionally, the first electrode layer 400 includes a plurality of first electrodes, and at least part of the material of the isolation structure 200 includes a metal material. The first electrodes and the isolation structure 200 are electrically connected to each other, so that the plurality of first electrodes can be interconnected into a whole-surface electrode through the isolation structure 200.

[0043] Optionally, the display panel further includes a second electrode layer 500 located on the side of the light-emitting functional layer 300 facing the substrate 100. The second electrode layer 500 and the first electrode layer 400 interact to drive the light-emitting functional layer 300 to emit light. One of the first electrode layer 400 and the second electrode layer 500 is an anode, and the other is a cathode. In the embodiment of the present application, the second electrode layer 500 is taken as an example of the anode and the first electrode layer 400 is taken as an example of the cathode.

[0044] Optionally, the light-emitting functional layer 300 includes one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer. Specifically, it can be selected according to the specific type of the light-emitting layer, and there is no special limitation. The electron injection layer, the electron transport layer, and the hole blocking layer can be disposed between the first electrode layer 400 and the light-emitting material layer. The electron blocking layer, the hole transport layer, and the hole injection layer can be disposed between the second electrode layer 500 and the light-emitting material layer.

[0045] The material of the first electrode layer 400 can be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In), and can also be an alloy of the foregoing metal materials, such as magnesium-silver alloy (Mg / Ag), lithium-aluminum alloy (Li / Al). In this regard, this embodiment is not limited.

[0046] The material of the second electrode layer 500 is generally a material with a high work function to improve the hole injection efficiency, and can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), or a transparent conductive polymer (such as polyaniline), etc. For example, the second electrode layer 500 can be made of an ITO-Ag-ITO composite material, and there is no special limitation.

[0047] Please refer to Figures 3 to 4 , in some alternative embodiments, in the direction from the substrate 100 to the isolation structure 200, the cross-sectional area of the first sub-layer 201 shows an increasing trend. The decreasing trend means that the cross-sectional area of the first sub-layer 201 can decrease uniformly or stepwise. For example, along the direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 is trapezoidal or T-shaped. When the cross-section of the first sub-layer 201 is trapezoidal, the corresponding cross-sectional area of the first sub-layer 201 decreases uniformly, and when the cross-section of the first sub-layer 201 is T-shaped, the cross-sectional area of the first sub-layer 201 decreases stepwise. By restricting the first sub-layer 201 to form a structure with a larger upper part and a smaller lower part, there is a gap between the lower part with a smaller area of the first sub-layer 201 and the light-emitting functional layer 300, and the upper part with a larger area of the first sub-layer 201 can extend towards the direction where the first electrode layer 400 is located relative to the lower part with a smaller area of the first sub-layer 201 to be connected to the first electrode layer 400.

[0048] Optionally, along the direction perpendicular to the plane where the substrate 100 is located, the thickness of the first sub-layer 201 is greater than 0 and less than or equal to 400 nm. For example, the thickness of the first sub-layer 201 can be equal to any one of 100 nm, 200 nm, 300 nm, and 400 nm. Of course, the thickness of the first sub-layer 201 can also adopt other values and is not limited to the above examples.

[0049] Please refer to Figure 4 , in some alternative embodiments, along a direction perpendicular to the plane where the substrate 100 is located, the first sub-layer 201 includes opposite first surface F1, second surface F2, and a first side surface C1 connecting the first surface F1 and the second surface F2. The first surface F1 is disposed closer to the substrate 100 than the second surface F2; the orthographic projection area of the first surface F1 on the substrate 100 is smaller than the orthographic projection area of the second surface F2 on the substrate 100; the included angle between the first side surface C1 and the second surface F2 is an acute angle.

[0050] In this embodiment, along a direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 may be an inverted trapezoid, a curved trapezoid, etc. It can be understood that the smaller the included angle between the first side surface C1 and the first surface F1, the greater the extension distance of the second surface F2 relative to the first surface F1 in the direction of the first electrode layer 400, that is, it is more convenient for the second surface F2 to be connected to the first electrode layer 400.

[0051] Optionally, the included angle between the first side surface C1 and the second surface F2 is greater than or equal to 30° and less than or equal to 60°; optionally, the included angle between the first side surface C1 and the second surface F2 may be any one of 30°, 45°, and 60°. Through research and experiments by the inventor, it is found that the smaller the included angle between the first side surface C1 and the second surface F2, the smaller the possible overlapping area between the light-emitting functional layer 300 and the first sub-layer 201, and the less likely it is to generate an overlap.

[0052] And considering that the evaporation angle during the preparation of the first electrode layer 400 is different from the evaporation angle during the preparation of the light-emitting functional layer 300, it is possible to achieve the overlap between the first electrode layer 400 and the first sub-layer 201 while avoiding the overlap between the light-emitting functional layer 300 and the first sub-layer 201.

[0053] Of course, the included angle between the first side surface C1 and the first surface F1 may also adopt other values, not limited to the above examples.

[0054] Optionally, at least a part of the first side surface C1, the second surface F2, and the first electrode layer 400 are in contact, that is, the first side surface C1, the second surface F2, and the first electrode layer 400 may be in partial or full contact to achieve signal transmission.

[0055] Optionally, the first electrode layer 400 fills the gap between the light-emitting functional layer 300 and the first sub-layer 201 to prevent the light-emitting functional layer 300 from contacting the first sub-layer 201.

[0056] Optionally, along a direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 is an inverted trapezoid.

[0057] Please refer toFigure 7 , in some alternative embodiments, along a direction perpendicular to the plane of the substrate 100, the first sub-layer 201 includes opposite first surface F1, second surface F2, and a first side surface C1 connecting the first surface F1 and the second surface F2. The first surface F1 is disposed closer to the substrate 100 than the second surface F2; the orthographic projection area of the first surface F1 on the substrate 100 is larger than the orthographic projection area of the second surface F2 on the substrate 100. Along a direction parallel to the plane of the substrate 100, there is a gap between the first side surface C1 and the side surface of the light-emitting functional layer 300 facing the isolation structure 200.

[0058] In this embodiment, along a direction perpendicular to the plane of the substrate 100, the cross-section of the first sub-layer 201 may also be trapezoidal, that is, the length of the side corresponding to the first surface F1 is greater than the length of the side corresponding to the second surface F2. Along a direction parallel to the plane of the substrate 100, there is a gap between the first side surface C1 and the side surface of the light-emitting functional layer 300 facing the isolation structure 200, so as to prevent the light-emitting functional layer 300 from being electrically connected to the first sub-layer 201, thereby avoiding the problem of lateral leakage.

[0059] Optionally, at least part of the first side surface C1, the second surface F2 are in contact with the first electrode layer 400 to achieve signal transmission.

[0060] Optionally, along a direction perpendicular to the plane of the substrate 100, the cross-section of the first sub-layer 201 is trapezoidal.

[0061] Please refer to Figures 5 to 7 , in some alternative embodiments, the display panel further includes a first insulating portion 700, and the first insulating portion 700 is at least disposed in the gap between the first sub-layer 201 and the first electrode layer 400.

[0062] It can be understood that the first insulating portion 700 includes an insulating material, which can achieve electrical insulation between the first sub-layer 201 and the first electrode layer 400, and prevent the first sub-layer 201 from being electrically connected to the first electrode layer 400. Optionally, the material of the first insulating portion 700 includes inorganic materials, such as silicon nitride, silicon oxide, and silicon oxynitride, etc. Of course, the first insulating portion 700 can also be made of organic materials or other inorganic materials, without special limitation.

[0063] Optionally, the first insulating portion 700 is at least partially in contact with the side of the first sub-layer 201 facing the light-emitting functional layer 300. That is, the first insulating portion 700 can fill the gap between the first sub-layer 201 and the first electrode layer 400.

[0064] Optionally, in a direction perpendicular to the plane of the substrate 100, the height of the side of the first insulating portion 700 facing away from the substrate 100 is lower than the height of the side of the first sub-layer 201 facing away from the substrate 100, so as to facilitate the connection between the first electrode layer 400 and the first sub-layer 201.

[0065] Optionally, the first electrode layer 400 covers the side of the first insulating portion 700 facing away from the substrate 100 and extends to the side of the first sub-layer 201 facing away from the substrate 100 to ensure the connection effect between the first electrode layer 400 and the first sub-layer 201.

[0066] Please refer to Figures 5 to 7 , optionally, in a direction perpendicular to the plane of the substrate 100, the cross-section of the first insulating portion 700 is trapezoidal, which is convenient for preparation.

[0067] Please refer to Figures 5 to 6 , in some alternative embodiments, the display panel further includes a first insulating portion 700. The first insulating portion 700 is at least disposed within the interval between the first sub-layer 201 and the first electrode layer 400. The first insulating portion 700 includes opposite third surfaces F3 and fourth surfaces F4, and two second side surfaces C2 connecting the third surface F3 and the fourth surface F4. The third surface F3 is disposed closer to the substrate 100 than the fourth surface F4; one second side surface C2 is connected to the first side surface C1, and the other second side surface C2 is connected to the side portion of the light-emitting functional layer 300 facing the isolation structure 200.

[0068] In this embodiment, in a direction perpendicular to the plane of the substrate 100, the cross-section of the first insulating portion 700 is trapezoidal. The two second side surfaces C2 correspond to the waists of the trapezoid. One second side surface C2 of the first insulating portion 700 is connected to the first side surface C1 of the first sub-layer 201, and the other second side surface C2 is connected to the side of the light-emitting functional layer 300 facing the isolation structure 200. That is, the second side surface C2 is parallel to the corresponding first side surface C1 of the first sub-layer 201, and the other second side surface C2 is parallel to the corresponding side of the light-emitting functional layer 300 facing the isolation structure 200, so as to achieve close contact, avoid gaps between the first sub-layer 201 and the light-emitting functional layer 300, achieve complete isolation between the first sub-layer 201 and the light-emitting functional layer 300, and improve space utilization rate with a compact structure.

[0069] Please refer to Figure 7In some other optional embodiments, the display panel further includes a first insulating portion 700, which is at least disposed in the interval between the first sublayer 201 and the first electrode layer 400, and includes a third surface F3 and a fourth surface F4 opposite to each other, and two second side surfaces C2 connecting the third surface F3 and the fourth surface F4, wherein the third surface F3 is disposed close to the substrate 100 relative to the fourth surface F4; there is a gap between the second side surface C2 close to the first sublayer 201 and the side surface facing the light-emitting functional layer 300, and part of the first electrode layer fills the gap. Avoiding the gap between the first sublayer 201 and the light-emitting functional layer 300, so as to achieve complete isolation between the first sublayer 201 and the light-emitting functional layer 300, and improving space utilization and compact structure.

[0070] See also Figures 3 to 8 In some optional embodiments, along the direction away from the substrate 100, the isolation structure 200 includes a second sublayer 202 and a third sublayer 203 which are arranged on the side of the first sublayer 201 away from the substrate 100 and are stacked, the orthographic projection of the second sublayer 202 on the substrate 100 is located within the orthographic projection of the first sublayer 201 on the substrate 100, and the orthographic projection of the first sublayer 201 on the substrate 100 is located within the orthographic projection of the third sublayer 203 on the substrate 100.

[0071] The orthographic projection of the second sub-layer 202 on the substrate 100 is located within the orthographic projection of the first sub-layer 201 on the substrate 100, which means that the size of the second sub-layer 202 is smaller than or equal to the size of the first sub-layer 201. Similarly, the orthographic projection of the first sub-layer 201 on the substrate 100 is located within the orthographic projection of the third sub-layer 203 on the substrate 100, which means that the size of the first sub-layer 201 is smaller than or equal to the size of the third sub-layer 203, so as to form the first electrode layer 400 and the light-emitting functional layer 300 of the desired pattern.

[0072] Optionally, the first sub-layer 201 includes a titanium metal material, the second sub-layer 202 includes an aluminum metal material, and the third sub-layer 203 includes a titanium metal material.

[0073] Optionally, the first sublayer 201 and the second sublayer 202 include conductive materials to facilitate signal transmission.

[0074] Optionally, the display panel also includes a pixel defining layer 600, which is arranged on the side of the isolation structure 200 facing the substrate 100, and the pixel defining layer 600 encloses a plurality of pixel openings 601, and the pixel openings 601 are connected to the corresponding isolation openings K, and the light-emitting functional layer 300 is at least partially located in each pixel opening 601.

[0075] Optionally, the light-emitting functional layer 300 includes a plurality of light-emitting structures.

[0076] In this embodiment, a light-emitting structure may be disposed within the pixel aperture 601 to achieve light-emitting display of the display panel.

[0077] Optionally, multiple pixel apertures 601 are distributed at intervals, and a light-emitting structure is disposed within each pixel aperture 601.

[0078] Please refer to Figure 5 and Figure 8 , the embodiment of the present invention further provides a display panel, including: a substrate 100; an isolation structure 200 disposed on one side of the substrate 100 and enclosing a plurality of isolation openings K, the isolation structure 200 including a first sub-layer 201 close to one side of the substrate 100; a light-emitting functional layer 300 at least partially located within the isolation openings K, and in a direction parallel to the plane where the substrate 100 is located, a first insulating portion 700 is provided between the light-emitting functional layer 300 and the first sub-layer 201, and in a direction perpendicular to the plane where the substrate 100 is located, the surface of the first insulating portion 700 facing away from the substrate 100 and the surface of the light-emitting functional layer 300 facing away from the substrate 100 are flush, as Figure 8 shown, or, the surface of the first insulating portion 700 facing away from the substrate 100 is disposed away from the substrate 100 relative to the surface of the light-emitting functional layer 300 facing away from the substrate 100, as Figure 5 shown; a first electrode layer 400 disposed on the side of the light-emitting functional layer 300 facing away from the substrate 100 and connected to the first sub-layer 201.

[0079] The display panel provided by the embodiment of the present invention includes a substrate 100, an isolation structure 200, a light-emitting functional layer 300, and a first electrode layer 400. The first electrode layer 400 is connected to the first sub-layer 201, and an electrical signal can be transmitted from the first sub-layer 201 to the first electrode layer 400. By providing a first insulating portion 700 between the light-emitting functional layer 300 and the first sub-layer 201, electrical insulation between the light-emitting functional layer 300 and the first sub-layer 201 can be achieved, thereby avoiding electrical connection of the light-emitting functional layers 300 located in different isolation openings K and avoiding the problem of lateral leakage. Moreover, the surface of the first insulating portion 700 facing away from the substrate 100 can be flush with the surface of the light-emitting functional layer 300 facing away from the substrate 100, or the surface of the first insulating portion 700 facing away from the substrate 100 can be higher than the surface of the light-emitting functional layer 300 facing away from the substrate 100, so as to ensure the blocking effect of the first insulating portion and improve the performance of the display panel.

[0080] In some alternative embodiments, in the direction from the substrate 100 towards the isolation structure 200, the cross-sectional area of the first sub-layer 201 shows an increasing trend. The decreasing trend means that the cross-sectional area of the first sub-layer 201 can decrease uniformly or stepwise. For example, in the direction perpendicular to the plane of the substrate 100, the cross-section of the first sub-layer 201 is an inverted trapezoid or a T-shape. When the cross-section of the first sub-layer 201 is an inverted trapezoid, the corresponding cross-sectional area of the first sub-layer 201 decreases uniformly, while when the cross-section of the first sub-layer 201 is a T-shape, the cross-sectional area of the first sub-layer 201 decreases stepwise. By restricting the first sub-layer 201 to form a structure with a larger upper part and a smaller lower part, there is a gap between the lower part of the first sub-layer 201 with a smaller area and the light-emitting functional layer 300, and the upper part of the first sub-layer 201 with a larger area can extend towards the direction of the first electrode layer 400 relative to the lower part of the first sub-layer 201 with a smaller area to connect with the first electrode layer 400. On the other hand, the area of the second surface F2 remains unchanged. The smaller the angle between the first side surface C1 and the first surface F1, the greater the distance by which the first surface F1 retracts relative to the second surface F2, and the greater the spacing distance between the light-emitting functional layer 300 and the first surface F1, making it less likely to overlap onto the first sub-layer 201.

[0081] Optionally, in the direction perpendicular to the plane of the substrate 100, the thickness of the first sub-layer 201 is greater than 0 and less than or equal to 400 nm. For example, the thickness of the first sub-layer 201 can be equal to any one of 100 nm, 200 nm, 300 nm, 400 nm. Of course, the thickness of the first sub-layer 201 can also adopt other values and is not limited to the above examples.

[0082] Please refer to Figure 5 , in some alternative embodiments, in the direction perpendicular to the plane of the substrate 100, the first sub-layer 201 includes opposite first surface F1, second surface F2, and a first side surface C1 connecting the first surface F1 and the second surface F2. The first surface F1 is arranged closer to the substrate 100 than the second surface F2; the orthographic projection area of the first surface F1 on the substrate 100 is smaller than the orthographic projection area of the second surface F2 on the substrate 100; the angle between the first side surface C1 and the second surface F2 is an acute angle.

[0083] In this embodiment, in the direction perpendicular to the plane of the substrate 100, the cross-section of the first sub-layer 201 can be an inverted trapezoid or a curved trapezoid, etc. It can be understood that the smaller the angle between the first side surface C1 and the first surface F1, the greater the extension distance of the second surface F2 relative to the first surface F1 towards the direction of the first electrode layer 400, that is, it is more convenient for the second surface F2 to connect with the first electrode layer 400.

[0084] Optionally, the included angle between the first side surface C1 and the second surface F2 is greater than or equal to 30° and less than or equal to 60°; optionally, the included angle between the first side surface C1 and the second surface F2 can be any one of 30°, 45°, and 60°.

[0085] Of course, the included angle between the first side surface C1 and the second surface F2 can also adopt other values, not limited to the above examples.

[0086] Optionally, the first side surface C1 and the second surface F2 are connected to the first electrode layer 400 to achieve signal transmission.

[0087] Optionally, along the direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 is an inverted trapezoid.

[0088] Optionally, the first insulating portion 700 includes opposite third surface F3 and fourth surface F4, and two second side surfaces C2 connecting the third surface F3 and the fourth surface F4. The third surface F3 is arranged closer to the substrate 100 than the fourth surface F4; one second side surface C2 is connected to the first side surface C1, and the other second side surface C2 is connected to the side surface of the light-emitting functional layer 300 facing the isolation structure 200.

[0089] Please refer to Figure 5 and Figure 6 , in this embodiment, along the direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first insulating portion 700 is a trapezoid. The two second side surfaces C2 correspond to the waists of the trapezoid. One second side surface C2 of the first insulating portion 700 is connected to the first side surface C1 of the first sub-layer 201, and the other second side surface C2 is connected to the side surface of the light-emitting functional layer 300 facing the isolation structure 200. That is, one second side surface C2 is parallel to the first side surface C1 of the corresponding first sub-layer 201, and the other second side surface C2 is parallel to the side surface of the corresponding light-emitting functional layer 300 facing the isolation structure 200, so as to achieve close contact, avoid having a gap between the first sub-layer 201 and the light-emitting functional layer 300, achieve complete isolation between the first sub-layer 201 and the light-emitting functional layer 300, and improve the space utilization rate, with a compact structure.

[0090] Please refer to Figure 7 , in some optional embodiments, along the direction perpendicular to the plane where the substrate 100 is located, the first sub-layer 201 includes opposite first surface F1, second surface F2, and a first side surface C1 connecting the first surface F1 and the second surface F2. The first surface F1 is arranged closer to the substrate 100 than the second surface F2; the orthographic projection area of the first surface F1 on the substrate 100 is larger than the orthographic projection area of the second surface F2 on the substrate 100. Along the direction parallel to the plane where the substrate 100 is located, there is a gap between the first side surface C1 and the side surface of the light-emitting functional layer 300 facing the isolation structure 200.

[0091] In this embodiment, in a direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 may also be trapezoidal, that is, the length of the side corresponding to the first surface F1 is greater than the length of the side corresponding to the second surface F2. In a direction parallel to the plane where the substrate 100 is located, there is a gap between the first side surface C1 and the side surface of the light-emitting functional layer 300 facing the isolation structure 200, so as to prevent the light-emitting functional layer 300 from being electrically connected to the first sub-layer 201, thereby avoiding the problem of lateral leakage.

[0092] Optionally, the first side surface C1, the second surface F2 are connected to the first electrode layer 400 to achieve signal transmission.

[0093] Optionally, in a direction perpendicular to the plane where the substrate 100 is located, the cross-section of the first sub-layer 201 is trapezoidal.

[0094] In some alternative embodiments, in a direction away from the substrate 100, the isolation structure 200 includes a second sub-layer 202 and a third sub-layer 203 which are arranged on the side of the first sub-layer 201 facing away from the substrate 100 and are stacked. The orthographic projection of the second sub-layer 202 on the substrate 100 is located within the orthographic projection of the first sub-layer 201 on the substrate 100, and the orthographic projection of the first sub-layer 201 on the substrate 100 is located within the orthographic projection of the third sub-layer 203 on the substrate 100.

[0095] The fact that the orthographic projection of the second sub-layer 202 on the substrate 100 is located within the orthographic projection of the first sub-layer 201 on the substrate 100 means that the size of the second sub-layer 202 is less than or equal to the size of the first sub-layer 201. Similarly, the fact that the orthographic projection of the first sub-layer 201 on the substrate 100 is located within the orthographic projection of the third sub-layer 203 on the substrate 100 means that the size of the first sub-layer 201 is less than or equal to the size of the third sub-layer 203, so as to facilitate the formation of the first electrode layer 400 and the light-emitting functional layer 300 with the required patterns.

[0096] Optionally, the first sub-layer 201 includes a titanium metal material, the second sub-layer 202 includes an aluminum metal material, and the third sub-layer 203 includes a titanium metal material.

[0097] Optionally, the first sub-layer 201 and the second sub-layer 202 include conductive materials to facilitate signal transmission.

[0098] Optionally, the display panel further includes a pixel defining layer 600. The pixel defining layer 600 is arranged on the side of the isolation structure 200 close to the substrate 100. The pixel defining layer 600 encloses and forms a plurality of pixel openings 601. The pixel openings 601 are communicated with the corresponding isolation openings K, and at least a part of the light-emitting functional layer 300 is located in each pixel opening 601.

[0099] Optionally, the first insulating portion 700 is disposed on a side of the pixel defining layer 600 away from the substrate 100.

[0100] Optionally, the first insulating portion 700 is disposed on a side of the pixel defining layer 600 away from the substrate 100, and a part of the first insulating portion 700 extends to a side of the pixel defining layer 600 close to the light-emitting functional layer 300, so as to facilitate blocking of the light-emitting functional layer 300.

[0101] Optionally, the light-emitting functional layer 300 includes a plurality of light-emitting structures.

[0102] In this embodiment, a light-emitting structure may be disposed in the pixel opening 601 to implement light-emitting display of the display panel.

[0103] Optionally, the plurality of pixel openings 601 are spaced apart, and a light-emitting structure is disposed in each pixel opening 601.

[0104] An embodiment of another aspect of the present application further provides a display device, including the display panel of any one of the above embodiments.

[0105] Since the display device provided in the embodiment of the present application includes the display panel of any one of the above embodiments, the display device provided in the second aspect embodiment of the present application has the beneficial effects of the display panel of any one of the above first aspect embodiments, which will not be elaborated herein.

[0106] The display device in the embodiment of the present application includes, but is not limited to, devices with a display function such as mobile phones, personal digital assistants (Personal Digital Assistant, abbreviated as: PDA), tablet computers, e-books, televisions, access control systems, smart landline telephones, consoles, etc.

[0107] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and enclosing a plurality of isolation openings, wherein the isolation structure includes a first sublayer close to one side of the substrate; A light-emitting functional layer is at least partially located in the isolation opening, and there is a gap between the light-emitting functional layer and the first sublayer along a direction parallel to the plane where the substrate is located; The first electrode layer is arranged on the side of the light-emitting functional layer away from the substrate and is connected to the first sub-layer.

2. The display panel according to claim 1, characterized in that: From the substrate to the isolation structure, the cross-sectional area of ​​the first sub-layer increases; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross section of the first sublayer is in an inverted trapezoid or a T-shape; Preferably, along a direction perpendicular to the plane where the substrate is located, the thickness of the first sublayer is greater than 0 and less than or equal to 400 nm.

3. The display panel according to claim 2, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the first sublayer includes an opposite first surface, a second surface, and a first side surface connecting the first surface and the second surface, and the first surface is arranged close to the substrate relative to the second surface; The orthographic projection area of ​​the first surface on the substrate is smaller than the orthographic projection area of ​​the second surface on the substrate; The angle between the first side surface and the second surface is an acute angle; Preferably, the angle between the first side surface and the second surface is greater than or equal to 30° and less than or equal to 60°; Preferably, at least part of the first side surface and the second surface are in contact with the first electrode layer; Preferably, the first electrode layer fills the gap between the light-emitting functional layer and the first sublayer; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross-section of the first sub-layer is in an inverted trapezoidal shape.

4. The display panel according to claim 1, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the first sublayer includes an opposite first surface, a second surface, and a first side surface connecting the first surface and the second surface, and the first surface is arranged close to the substrate relative to the second surface; The orthographic projection area of ​​the first surface on the substrate is larger than the orthographic projection area of ​​the second surface on the substrate, and along a direction parallel to the plane where the substrate is located, there is a gap between the first side surface and the side surface of the light-emitting functional layer facing the isolation structure; Preferably, at least part of the first side surface and the second surface are in contact with the first electrode layer; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross-section of the first sub-layer is trapezoidal.

5. The display panel according to claim 1, characterized in that: It also includes a first insulating portion, wherein the first insulating portion is at least provided in a gap between the first sublayer and the first electrode layer; Preferably, the first insulating portion is in contact with at least a portion of the first sublayer on a side facing the light-emitting functional layer; Preferably, along a direction perpendicular to the plane where the substrate is located, the cross-section of the first insulating portion is trapezoidal; Preferably, along a direction perpendicular to the plane where the substrate is located, a height of the first insulating portion away from a side surface of the substrate is lower than a height of the first sub-layer away from a side surface of the substrate; Preferably, the first electrode layer covers a side of the first insulating portion facing away from the substrate, and extends to a side of the first sublayer facing away from the substrate; Preferably, the material of the first insulating part includes an inorganic material.

6. The display panel according to claim 3, characterized in that: The device further comprises a first insulating portion, wherein the first insulating portion is at least arranged in the interval between the first sublayer and the first electrode layer, and along a direction perpendicular to the plane where the substrate is located, the first insulating portion comprises a third surface and a fourth surface opposite to each other, and two second side surfaces connecting the third surface and the fourth surface, and the third surface is arranged close to the substrate relative to the fourth surface; One of the two second side surfaces is connected to the first side surface, and the other second side surface is connected to a side surface portion of the light-emitting functional layer facing the isolation structure.

7. The display panel according to claim 4, characterized in that: The device further comprises a first insulating portion, wherein the first insulating portion is at least arranged in the interval between the first sublayer and the first electrode layer, and along a direction perpendicular to the plane where the substrate is located, the first insulating portion comprises a third surface and a fourth surface opposite to each other, and two second side surfaces connecting the third surface and the fourth surface, and the third surface is arranged close to the substrate relative to the fourth surface; There is a gap between the second side surface close to the first sublayer and the side surface facing the light-emitting functional layer, and a portion of the first electrode layer fills the gap.

8. The display panel according to claim 1, characterized in that: Along the direction away from the substrate, the isolation structure includes a second sublayer and a third sublayer which are arranged on a side of the first sublayer away from the substrate and are stacked, the orthographic projection of the second sublayer on the substrate is located within the orthographic projection of the first sublayer on the substrate, and the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the third sublayer on the substrate; Preferably, the first sublayer and the second sublayer include conductive materials; preferably, a second electrode layer is provided on the side of the light-emitting functional layer facing the substrate; Preferably, the display panel also includes a pixel defining layer, which is arranged on a side of the isolation structure facing the substrate, and the pixel defining layer encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the light-emitting functional layer is at least partially located in each of the pixel openings.

9. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and enclosing a plurality of isolation openings, wherein the isolation structure includes a first sublayer close to one side of the substrate; The light-emitting functional layer is at least partially located in the isolation opening, and a first insulating portion is provided between the light-emitting functional layer and the first sublayer along a direction parallel to the plane where the substrate is located, and along a direction perpendicular to the plane where the substrate is located, a surface of the first insulating portion facing away from the substrate and a surface of the light-emitting functional layer facing away from the substrate are flush, or a surface of the first insulating portion facing away from the substrate is arranged away from the substrate relative to a surface of the light-emitting functional layer facing away from the substrate; The first electrode layer is arranged on the side of the light-emitting functional layer away from the substrate and is connected to the first sub-layer.

10. The display panel according to claim 9, characterized in that: From the substrate to the isolation structure, the cross-sectional area of ​​the first sub-layer increases; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross-section of the first sub-layer is in an inverted trapezoid or a T-shape.

11. The display panel according to claim 10, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the first sublayer includes an opposite first surface, a second surface, and a first side surface connecting the first surface and the second surface, and the first surface is arranged close to the substrate relative to the second surface; The orthographic projection area of ​​the first surface on the substrate is smaller than the orthographic projection area of ​​the second surface on the substrate; The angle between the first side surface and the second surface is an acute angle; Preferably, the angle between the first side surface and the second surface is greater than or equal to 30° and less than or equal to 60°; Preferably, the first side surface and the second surface are in contact with the first electrode layer; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross-section of the first sub-layer is in an inverted trapezoidal shape.

12. The display panel according to claim 11, characterized in that: The first insulating portion is at least arranged in the interval between the first sublayer and the first electrode layer, and along a direction perpendicular to the plane where the substrate is located, the first insulating portion includes a third surface and a fourth surface opposite to each other, and two second side surfaces connecting the third surface and the fourth surface, and the third surface is arranged close to the substrate relative to the fourth surface; One of the second side surfaces is connected to the first side surface, and another of the second side surfaces is connected to a side surface of the light-emitting functional layer facing the isolation structure.

13. The display panel according to claim 9, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the first sublayer includes an opposite first surface, a second surface, and a first side surface connecting the first surface and the second surface, and the first surface is arranged close to the substrate relative to the second surface; The orthographic projection area of ​​the first surface on the substrate is larger than the orthographic projection area of ​​the second surface on the substrate, and along a direction parallel to the plane where the substrate is located, there is a gap between the first side surface and the side surface of the light-emitting functional layer facing the isolation structure; Preferably, the first side surface and the second surface are in contact with the first electrode layer; Preferably, along a direction perpendicular to the plane where the substrate is located, a cross-section of the first sub-layer is trapezoidal.

14. The display panel according to claim 9, characterized in that: Along the direction away from the substrate, the isolation structure includes a second sublayer and a third sublayer which are arranged on a side of the first sublayer facing away from the substrate and are stacked, the orthographic projection of the second sublayer on the substrate is located within the orthographic projection of the first sublayer on the substrate, and the orthographic projection of the second sublayer on the substrate is located within the orthographic projection of the third sublayer on the substrate; Preferably, the materials of the first sublayer and the second sublayer include conductive materials; Preferably, a second electrode layer is provided on the side of the light-emitting functional layer facing the substrate; Preferably, the display panel further comprises a pixel defining layer, the pixel defining layer is arranged on a side of the isolation structure close to the substrate, the pixel defining layer encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the light-emitting functional layer is at least partially located in each of the pixel openings; Preferably, the first insulating portion is disposed on a side of the pixel defining layer away from the substrate; Preferably, the first insulating portion is disposed on a side of the pixel defining layer facing away from the substrate, and a portion of the first insulating portion extends to a side of the pixel defining layer close to the light-emitting functional layer.

15. A display device, characterized in that: include: The display panel according to any one of claims 1 to 14.

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