Display panel, preparation method thereof and display device

Abstract

The application relates to a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, an isolation structure arranged on one side of the substrate, the isolation structure being enclosed to form a plurality of isolated openings, a plurality of light-emitting functional units arranged on one side of the substrate, the plurality of light-emitting functional units and the plurality of isolated openings being arranged correspondingly, and at least part of the light-emitting functional units being arranged in the corresponding isolated openings. The light-emitting functional unit comprises a light-emitting layer and a first carrier layer arranged in a stacking manner away from the substrate. The outer contour of the orthographic projection of the first carrier layer on the substrate is located in the outer contour of the orthographic projection of the light-emitting layer on the substrate. Therefore, the display panel, the preparation method thereof and the display device provided by the application can improve the display effect of the display panel.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) display technology is considered the most promising next-generation flat panel display technology. Compared to liquid crystal displays (LCDs), OLED panels offer advantages such as low energy consumption, low cost, self-emissiveness, wide viewing angles, and fast response times. Traditional display panel manufacturing typically uses fine metal masks (FMMs) to pattern the light-emitting pixels. While FMM technology is mature and has extensive mass production experience, it also suffers from limitations in precision, high development costs, and long development cycles. Fine metal mask-less technology eliminates the limitations imposed by traditional OLED processes on display size, resolution, and other screen performance aspects, offering advantages such as high performance, full-size display, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A describe relevant content regarding the technology of eliminating fine metal masks, and are provided for reference.

[0003] However, the display effect of the display panel formed by the above display technology needs to be improved. Summary of the Invention

[0004] Therefore, it is necessary to provide a display panel, a method for manufacturing the same, and a display device, which can improve the display effect of the display panel.

[0005] In a first aspect, embodiments of this application provide a display panel, including:

[0006] substrate;

[0007] An isolation structure is provided on one side of the substrate, and the isolation structure encloses and forms multiple isolation openings;

[0008] Multiple light-emitting functional units are disposed on one side of the substrate, and multiple light-emitting functional units and multiple isolation openings are correspondingly disposed, with at least a portion of the light-emitting functional units disposed in the corresponding isolation openings;

[0009] The light-emitting functional unit includes a light-emitting layer and a first carrier layer stacked in a direction away from the substrate;

[0010] The outer contour of the orthogonal projection of the first carrier layer on the substrate is located within the outer contour of the orthogonal projection of the light-emitting layer on the substrate.

[0011] In the display panel provided in this application embodiment, the outer contour of the orthographic projection of the first carrier layer on the substrate is located within the outer contour of the orthographic projection of the light-emitting layer on the substrate. As a result, the area of ​​the first carrier layer is smaller, the area of ​​the light-emitting layer is larger, and the overlap area between the edge of the light-emitting layer and the first carrier layer is smaller. This disrupts the structural integrity of the device at the edge of the light-emitting functional part, reduces the additional carrier transport channels formed between the edge of the light-emitting layer and the first carrier layer, and alleviates the leakage caused by the additional carrier transport channels. When the light-emitting functional part is activated, the area of ​​the edge of the light-emitting functional part that is activated is reduced, thereby alleviating the uneven display brightness of the display panel and improving the display effect of the display panel.

[0012] In one embodiment, the light-emitting functional unit includes a second charge carrier layer disposed between the light-emitting layer and the substrate;

[0013] The outer contour of the orthogonal projection of the second carrier layer on the substrate is located within the outer contour of the orthogonal projection of the light-emitting layer on the substrate.

[0014] Preferably, the first carrier layer includes at least one of an electron transport layer, an electron injection layer, and a hole blocking layer;

[0015] Preferably, the second carrier layer includes at least one of a hole injection layer, a hole transport layer, and an electron blocking layer.

[0016] In one embodiment, both the second charge carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the second charge carrier layer is smaller than that of the light-emitting layer.

[0017] Preferably, the evaporation angle of the second carrier layer is in the range of 5°-45°.

[0018] In one embodiment, both the first charge carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the first charge carrier layer is smaller than that of the light-emitting layer.

[0019] Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°;

[0020] Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°.

[0021] In one embodiment, the display panel includes a plurality of first electrodes, and the plurality of first electrodes and a plurality of light-emitting functional parts are correspondingly disposed thereon, with the first electrodes disposed on the side of the corresponding light-emitting functional part away from the substrate.

[0022] Preferably, the material of the isolation structure includes a conductive material, the outer contour of the orthographic projection of the light-emitting functional part on the substrate is located within the outer contour of the orthographic projection of the first electrode on the substrate, and the first electrode is overlapped and connected to the isolation structure.

[0023] Preferably, there is a gap between the light-emitting functional part and the isolation structure;

[0024] Preferably, both the first electrode and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the light-emitting layer is smaller than that of the first electrode.

[0025] Preferably, the evaporation angle of the first electrode is greater than or equal to 60°.

[0026] In one embodiment, the light-emitting functional part includes an edge part and a main body part, the edge part is disposed on the outer periphery of the main body part, and the maximum thickness of the edge part is less than the maximum thickness of the main body part.

[0027] Preferably, the outer contour of the orthographic projection of the first carrier layer on the substrate is located within the orthographic projection of the light-emitting layer at the edge on the substrate.

[0028] Preferably, the outer contour of the orthographic projection of the second carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge.

[0029] Preferably, in the edge portion, the maximum thickness of the first carrier layer is less than the maximum thickness of the light-emitting layer;

[0030] Preferably, in the edge portion, the maximum thickness of the second carrier layer is less than the maximum thickness of the light-emitting layer;

[0031] Preferably, in the edge portion, the sum of the maximum thicknesses of the first carrier layer and the second carrier layer is less than the maximum thickness of the light-emitting layer;

[0032] Preferably, in the edge portion, the thickness of any one of the first carrier layer, the second carrier layer, and the light-emitting layer gradually decreases to 0 from the main body portion to the edge portion;

[0033] Preferably, the isolation structure includes a first isolation portion and a second isolation portion, the second isolation portion is located on the side of the first isolation portion facing the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate;

[0034] Preferably, the orthographic projection of the edge portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the orthographic projection of the main body portion on the substrate does not overlap with the orthographic projection of the first isolation portion on the substrate.

[0035] Preferably, the isolation structure includes a third isolation portion, which is located on the side of the second isolation portion away from the first isolation portion, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate.

[0036] In one embodiment, the outer contour of the orthographic projection of the first isolation portion on the substrate is the first outer contour, the outer contour of the orthographic projection of the side of the isolation structure facing the substrate on the substrate is the second outer contour, and the outer contours of the orthographic projections of the first carrier layer, the second carrier layer and the light-emitting layer on the substrate are all located between the first outer contour and the second outer contour.

[0037] Preferably, the distance between the outer contour of the orthographic projection of the first carrier layer on the substrate and the first outer contour is less than or equal to 0.1 μm;

[0038] Preferably, the distance between the outer contour of the orthographic projection of the second carrier layer on the substrate and the first outer contour is less than or equal to 0.1 μm;

[0039] Preferably, the distance between the outer contour of the orthographic projection of the light-emitting layer on the substrate and the first outer contour is in the range of 0.4μm-0.7μm;

[0040] Preferably, the outer contour of the orthographic projection of the first carrier layer on the substrate is the third outer contour, and the distance between the third outer contour and the first outer contour is less than the distance between the third outer contour and the second outer contour.

[0041] Preferably, the outer contour of the orthographic projection of the second carrier layer on the substrate is the fourth outer contour, and the distance between the fourth outer contour and the first outer contour is less than the distance between the fourth outer contour and the second outer contour.

[0042] Preferably, the outer contour of the orthographic projection of the light-emitting layer on the substrate is the fifth outer contour, and the distance between the fifth outer contour and the first outer contour is greater than the distance between the fifth outer contour and the second outer contour.

[0043] In one embodiment, the display panel includes a pixel defining layer disposed between a substrate and an isolation structure. The pixel defining layer encloses and forms a plurality of pixel openings, and the plurality of pixel openings are correspondingly disposed with a plurality of light-emitting functional parts. At least a portion of the light-emitting functional parts are disposed within the corresponding pixel openings.

[0044] Preferably, an isolation groove is provided on the side of the pixel limiting layer away from the substrate. The groove opening is provided on the side of the pixel limiting layer away from the substrate. The side of the isolation structure facing the substrate is the first surface. The distance between the orthographic projection of the groove opening on the substrate and the orthographic projection of the first surface on the substrate is greater than or equal to 0. Part of the groove wall of the isolation groove is exposed outside the second carrier layer.

[0045] Preferably, the orthographic projection of the isolation groove on the substrate is disposed on the outer periphery of the orthographic projection of the corresponding pixel opening on the substrate;

[0046] Preferably, the isolation tank includes a first tank sidewall close to the first surface and a second tank sidewall away from the first surface. The dimension of the bottom wall of the isolation tank along the direction from the first tank sidewall to the second tank sidewall is L1, the tank depth of the isolation tank is L2, and the evaporation angle of the second carrier layer is A. A, L1, and L2 satisfy the following formula: L2*tanA<L1.

[0047] In one embodiment, the orthographic projection of the opening of the isolation groove on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the edge portion is at least partially disposed in the isolation groove.

[0048] The angle between the side wall of the second tank and the bottom wall of the isolation tank is less than or equal to 90°; or,

[0049] The second trench sidewall is an inclined wall. The end of the second trench sidewall away from the substrate is inclined in a direction away from the first trench sidewall relative to the end close to the substrate. The angle between the second trench sidewall and the substrate thickness direction is smaller than the evaporation angle of the second carrier layer.

[0050] Preferably, in the edge portion of the isolation trench, the maximum thickness of the first carrier layer is less than the maximum thickness of the light-emitting layer;

[0051] Preferably, in the edge portion of the isolation trench, the maximum thickness of the second carrier layer is less than the maximum thickness of the light-emitting layer;

[0052] Preferably, in the edge portion of the isolation trench, the sum of the maximum thicknesses of the first carrier layer and the second carrier layer is less than the maximum thickness of the light-emitting layer.

[0053] Preferably, in the edge portion of the isolation trench, the thickness of any one of the first carrier layer, the second carrier layer, and the light-emitting layer gradually decreases from the main body portion to the edge portion.

[0054] In one embodiment, the orthographic projection of the opening of the isolation groove on the substrate does not overlap with the orthographic projection of the first isolation portion on the substrate, and the edge portion is located outside the isolation groove.

[0055] The distance between the first and second sidewalls of the isolation tank gradually decreases along the direction from the bottom wall of the isolation tank to the opening of the tank. The angle between either the first or second sidewall and the thickness direction of the substrate is greater than the evaporation angle of the second carrier layer.

[0056] Secondly, embodiments of this application provide a display panel, including:

[0057] substrate;

[0058] An isolation structure is provided on one side of the substrate, and the isolation structure encloses and forms multiple isolation openings;

[0059] Multiple light-emitting functional units are disposed on one side of the substrate, and multiple light-emitting functional units and multiple isolation openings are correspondingly disposed, with at least a portion of the light-emitting functional units disposed in the corresponding isolation openings;

[0060] The light-emitting functional unit includes a light-emitting layer and a first carrier layer stacked in a direction away from the substrate;

[0061] The light-emitting functional part includes an edge part and a main body part. The edge part is located on the outer periphery of the main body part. The maximum thickness of the edge part is less than the maximum thickness of the main body part. In the edge part, the maximum thickness of the first carrier layer is less than the maximum thickness of the light-emitting layer.

[0062] In one embodiment, the light-emitting functional unit includes a second charge carrier layer disposed between the light-emitting layer and the substrate;

[0063] Preferably, in the edge portion, the maximum thickness of the second carrier layer is less than the maximum thickness of the light-emitting layer;

[0064] Preferably, in the edge portion, the thickness of any one of the first carrier layer, the second carrier layer, and the light-emitting layer gradually decreases to 0 from the main body portion to the edge portion;

[0065] Preferably, the display panel includes a plurality of first electrodes, and the plurality of first electrodes and a plurality of light-emitting functional parts are correspondingly disposed thereon, with the first electrodes disposed on the side of the corresponding light-emitting functional part away from the substrate;

[0066] Preferably, the material of the isolation structure includes a conductive material, the outer contour of the orthographic projection of the light-emitting functional part on the substrate is located within the outer contour of the orthographic projection of the first electrode on the substrate, and the first electrode is overlapped and connected to the isolation structure.

[0067] Preferably, there is a gap between the light-emitting functional part and the isolation structure;

[0068] Preferably, both the first electrode and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the light-emitting layer is smaller than that of the first electrode.

[0069] Preferably, the evaporation angle of the first electrode is greater than or equal to 60°;

[0070] Preferably, the outer contour of the orthographic projection of the first carrier layer on the substrate is located within the orthographic projection of the light-emitting layer at the edge on the substrate.

[0071] Preferably, the outer contour of the orthographic projection of the second carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge.

[0072] Preferably, both the first carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the first carrier layer is smaller than that of the light-emitting layer.

[0073] Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°;

[0074] Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°;

[0075] Preferably, the second charge carrier layer is a vapor-deposited component, and the vapor deposition angle of the second charge carrier layer is smaller than the vapor deposition angle of the light-emitting layer;

[0076] Preferably, the evaporation angle of the second carrier layer is in the range of 5°-45°.

[0077] Thirdly, embodiments of this application provide a display device, including a display panel as described in the first or second aspect.

[0078] Fourthly, embodiments of this application provide a method for manufacturing a display panel, comprising:

[0079] Provide substrate;

[0080] An isolation structure is formed on one side of the substrate; the isolation structure encloses and forms multiple isolation openings;

[0081] Multiple light-emitting functional parts are formed on one side of the substrate; the multiple light-emitting functional parts and multiple isolation openings are correspondingly disposed, and at least a portion of the light-emitting functional parts are disposed in the corresponding isolation openings; the light-emitting functional parts include a light-emitting layer and a first carrier layer arranged in a direction away from the substrate; wherein the outer contour of the orthographic projection of the first carrier layer on the substrate is located within the outer contour of the orthographic projection of the light-emitting layer on the substrate.

[0082] In one embodiment, a plurality of light-emitting functional parts are formed on one side of the substrate, including:

[0083] Evaporation is used to form a light-emitting layer and a first charge carrier layer;

[0084] Preferably, before evaporating to form the light-emitting layer and the first carrier layer, the process further includes:

[0085] A second carrier layer is formed by vapor deposition;

[0086] Preferably, the evaporation angle of the first carrier layer is smaller than the evaporation angle of the light-emitting layer;

[0087] Preferably, the evaporation angle of the second carrier layer is smaller than the evaporation angle of the light-emitting layer;

[0088] Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°;

[0089] Preferably, the evaporation angle of the second carrier layer is in the range of 5°-45°;

[0090] Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°. Attached Figure Description

[0091] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0092] Figure 1 This is a cross-sectional view of the display panel provided in an embodiment of this application.

[0093] Figure 2a This is a partial cross-sectional view of the display panel provided in an embodiment of this application.

[0094] Figure 2b for Figure 2a A magnified structural diagram of H.

[0095] Figure 3 Another partial cross-sectional view of the display panel provided in an embodiment of this application.

[0096] Figure 4 Another partial cross-sectional view of the display panel provided in an embodiment of this application.

[0097] Figure 5 Another partial cross-sectional view of the display panel provided in an embodiment of this application.

[0098] Figure 6 A partial cross-sectional view of the pixel-defining layer and the second electrode provided in an embodiment of this application.

[0099] Figure 7 This is a partial top view of the pixel-defining layer provided in an embodiment of this application.

[0100] Figure 8 Another partial top view of the pixel-defining layer provided in an embodiment of this application.

[0101] Figure 9 A cross-sectional view of the vapor deposition material source, substrate, and angle limiting plate provided in an embodiment of this application.

[0102] Figure 10 Another cross-sectional view of the vapor deposition material source, substrate, and angle limiting plate provided in an embodiment of this application.

[0103] Figure 11 Another cross-sectional view of the vapor deposition material source, substrate, and angle limiting plate provided in an embodiment of this application.

[0104] Figure 12 This is a schematic flowchart illustrating the method for manufacturing a display panel according to an embodiment of this application.

[0105] Explanation of reference numerals in the attached figures:

[0106] 100, Display panel; 110, Substrate; 120, Pixel defining layer; 121, Pixel opening; 122, Isolation trench; 1221, First trench sidewall; 1222, Second trench sidewall; 130, Light-emitting unit; 131, First electrode; 132, Second electrode; 133, Light-emitting functional part; 133a, Edge part; 133b, Main body part; 1331, First carrier layer; 1332, Second carrier layer; 1333, Light-emitting layer; 140, Isolation structure; 141, First isolation part; 142, Second isolation part; 143, Third isolation part; 1431, First surface; 144, Isolation opening; 210, Angle defining plate; 211, Defining opening; 220, Evaporation material source. Detailed Implementation

[0107] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0108] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, this does not indicate any order, quantity, or importance, but is merely used to distinguish different components. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Words such as “comprising” or “including” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0109] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0110] Organic Light Emitting Diode (OLED) display technology is considered the most promising next-generation flat panel display technology. Compared with liquid crystal display technology, OLED display technology has advantages such as low energy consumption, low cost, self-emissiveness, wide viewing angle, and fast response speed.

[0111] In the process of developing this application, the inventors discovered the following problems in the related technology: A display panel includes a substrate, multiple light-emitting functional parts, a pixel defining layer, and an isolation structure. The isolation structure is disposed on the side of the pixel defining layer facing away from the substrate, and the isolation structure encloses multiple isolation openings. The pixel defining layer encloses multiple pixel openings. Any two of the light-emitting functional parts, isolation openings, and pixel openings are arranged in a one-to-one correspondence, and the light-emitting functional parts are at least partially disposed in the corresponding isolation openings and pixel openings. The isolation structure includes a first isolation part and a second isolation part. The second isolation part is disposed on the side of the first isolation part facing the substrate, and the orthographic projection of the second isolation part on the substrate is located within the orthographic projection of the second isolation part on the substrate. The light-emitting functional parts include a hole transport layer, a light-emitting layer, and an electron transport layer stacked along a direction away from the substrate.

[0112] However, during the vapor deposition process of the light-emitting functional parts, the portion of the light-emitting functional parts directly below the first isolation part is thicker than the rest. This portion can be referred to as the ultra-thin light-emitting functional part. When the light-emitting functional parts are activated, the ultra-thin light-emitting functional part is also activated. Due to the difference in thickness, the ultra-thin light-emitting functional part and the rest of the light-emitting functional parts have different brightness and spectrum, resulting in uneven display brightness of the display panel and affecting the display effect. Furthermore, the activation of the ultra-thin light-emitting functional part creates an additional carrier transport channel, which acts as a leakage current channel.

[0113] In view of at least one of the above problems, embodiments of this application provide a display panel, a method for manufacturing the same, and a display device, which can improve the display effect of the display panel.

[0114] The following will combine Figures 1-12 The display panel 100, its manufacturing method, and the display device provided in the embodiments of this application will be described.

[0115] See Figure 1 This application provides a display panel 100, which may include a substrate 110, an isolation structure 140, and a plurality of light-emitting functional parts 133. The substrate 110 provides support for subsequent film layers. The isolation structure 140 is disposed on one side of the substrate 110, and the isolation structure 140 encloses to form a plurality of isolation openings 144. The light-emitting functional parts 133 are disposed on one side of the substrate 110, and the plurality of light-emitting functional parts 133 and the plurality of isolation openings 144 are correspondingly disposed, with at least a portion of the light-emitting functional parts 133 disposed within the corresponding isolation openings 144.

[0116] In this embodiment, the correspondence between A and B can mean that one A corresponds to at least one B, or that one B corresponds to at least one A. For example, the correspondence between the isolation opening 144 and the light-emitting functional part 133 can mean that one isolation opening 144 corresponds to at least one light-emitting functional part 133, or that one light-emitting functional part 133 corresponds to at least one isolation opening 144. This embodiment uses the example of one isolation opening 144 corresponding to one light-emitting functional part 133 for explanation.

[0117] See Figure 2a The light-emitting functional unit 133 may include a light-emitting layer 1333 and a first charge carrier layer 1331 stacked along a direction away from the substrate 110. The first charge carrier layer 1331 is disposed on the side of the light-emitting layer 1333 facing away from the substrate 110. The outer contour of the orthogonal projection of the first charge carrier layer 1331 on the substrate 110 is located within the outer contour of the orthogonal projection of the light-emitting layer 1333 on the substrate 110. Thus, the area of ​​the first carrier layer 1331 is relatively small, while the area of ​​the light-emitting layer 1333 is relatively large. The overlap area between the edge of the light-emitting layer 1333 and the first carrier layer 1331 is small, which disrupts the structural integrity of the device at the edge of the light-emitting functional unit 133. This reduces the additional carrier transport channel (i.e., leakage channel) formed between the edge of the light-emitting layer 1333 and the first carrier layer 1331, alleviating the leakage caused by this additional carrier transport channel. When the light-emitting functional unit 133 is activated, the area of ​​the edge of the light-emitting functional unit 133 that is activated is reduced, thereby alleviating the uneven display brightness of the display panel 100 and improving the display effect of the display panel 100. The thickness direction of the substrate 110 is direction Z.

[0118] In some embodiments, see Figure 2a The light-emitting functional unit 133 includes a second carrier layer 1332, which is disposed between the light-emitting layer 1333 and the substrate 110. The outer contour of the orthographic projection of the second carrier layer 1332 onto the substrate 110 is located within the outer contour of the orthographic projection of the light-emitting layer 1333 onto the substrate 110. Thus, the area of ​​the second carrier layer 1332 is smaller, while the area of ​​the light-emitting layer 1333 is larger. The overlap area between the edge of the light-emitting layer 1333 and the second carrier layer 1332 is smaller, which disrupts the structural integrity of the device at the edge of the light-emitting functional unit 133. This reduces the additional carrier transport channels formed between the edge of the light-emitting layer 1333 and the second carrier layer 1332, mitigating leakage caused by these additional carrier transport channels. When the light-emitting functional unit 133 is activated, the area of ​​the edge of the light-emitting functional unit 133 that is activated is reduced, thereby alleviating uneven display brightness of the display panel 100 and improving the display effect of the display panel 100.

[0119] Among them, the light-emitting functional part 133 in the overlapping area of ​​the light-emitting layer 1333, the first carrier layer 1331 and the second carrier layer 1332 has good device structural integrity.

[0120] In some embodiments, the first carrier layer 1331 includes at least one of an electron transport layer and an electron injection layer. For example, the first carrier layer 1331 may include an electron transport layer, or the first carrier layer 1331 may include an electron injection layer, or the first carrier layer 1331 may include an electron transport layer and an electron injection layer, with the electron injection layer disposed on the side of the electron transport layer opposite to the light-emitting layer 1333.

[0121] In some embodiments, the first carrier layer 1331 may also include a hole blocking layer.

[0122] In some embodiments, the second sub-layer 1332 includes at least one of a hole injection layer and a hole transport layer. For example, the second sub-layer 1332 includes a hole injection layer, or the second sub-layer 1332 includes a hole transport layer. Alternatively, the second sub-layer 1332 includes a hole injection layer and a hole transport layer, with the hole injection layer disposed on the side of the hole transport layer opposite to the light-emitting layer 1333.

[0123] In some embodiments, the second carrier layer 1332 may also include an electron blocking layer.

[0124] In some embodiments, at least one of the first carrier layer 1331, the second carrier layer 1332, and the light-emitting layer 1333 is a vapor-deposited component, that is, at least one of the first carrier layer 1331, the second carrier layer 1332, and the light-emitting layer 1333 can be formed by vapor deposition.

[0125] See Figure 9 During the deposition of each film layer of the light-emitting functional part 133, the moving direction X of the deposition material source 220 can be parallel to the substrate 110, so as to... Figure 9 Taking the left-right direction as the moving direction of the vapor deposition material source 220 as an example, the vapor deposition material source 220 moves back and forth along the surface of the substrate 110 in the left-right direction. An angle limiting plate 210 is provided on the side of the vapor deposition material source 220 facing the substrate 110. After the material in the vapor deposition material source 220 evaporates, it is dispersed through the limiting opening 211 of the angle limiting plate 210 to form an evaporation cloud of vapor deposition material. S1 shows the edge of the evaporation cloud, and S2 is a straight line perpendicular to the substrate 110. The angles defined by the left and right edges S1 of the evaporation cloud and the thickness direction of the substrate 110 are called the vapor deposition angles. The vapor deposition angles are determined by the limiting opening 211 of the angle limiting plate 210 and the position of the vapor deposition material source 220 relative to the angle limiting plate 210. The left angle A1 and the right angle A2 of the evaporation cloud may be unequal or equal, and either A1 or A2 can be used as the vapor deposition angle.

[0126] It should be noted that, Figure 9 The vapor deposition material source 220 can be the vapor deposition material of the first carrier layer 1331 or the second carrier layer 1332. The vapor deposition angle of the first carrier layer 1331 or the second carrier layer 1332 can be A. The vapor deposition angles of the first carrier layer 1331 and the second carrier layer 1332 can be the same or different. Figure 10 The vapor deposition material source 220 can be the vapor deposition material of the light-emitting layer 1333, and the vapor deposition angle of the light-emitting layer 1333 can be B. Figure 11 The vapor deposition material source 220 can be the vapor deposition material of the first electrode 131, and the vapor deposition angle of the first electrode 131 can be C.

[0127] In some embodiments, see Figure 2a , Figure 9 and Figure 10 The evaporation angle A of the first carrier layer 1331 is smaller than the evaporation angle B of the light-emitting layer 1333. This allows the orthographic projection of the first carrier layer 1331 on the substrate 110 to be located within the orthographic projection of the light-emitting layer 1333 on the substrate 110. This reduces the additional carrier transport channel formed between the edge of the light-emitting layer 1333 and the first carrier layer 1331, alleviating the leakage caused by the additional carrier transport channel. It can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0128] In some embodiments, see Figure 2a , Figure 9 and Figure 10 The evaporation angle of the second carrier layer 1332 is smaller than the evaporation angle B of the light-emitting layer 1333. This allows the orthographic projection of the second carrier layer 1332 on the substrate 110 to be located within the orthographic projection of the light-emitting layer 1333 on the substrate 110. This reduces the additional carrier transport channel formed between the edge of the light-emitting layer 1333 and the second carrier layer 1332, alleviating the leakage caused by the additional carrier transport channel. It can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0129] For example, the evaporation angle A of the first carrier layer 1331 is in the range of 5°-45°, which avoids the evaporation angle of the first carrier layer 1331 being too small, making it easier to achieve the desired evaporation angle. In addition, it also avoids the evaporation angle of the first carrier layer 1331 being too large, resulting in a smaller size of the first carrier layer 1331 at the edge portion 133a. For example, the evaporation angle of the first carrier layer 1331 can be 5°, 10°, 20°, 40°, 45°, or any value between 5° and 45°.

[0130] For example, the deposition angle of the second carrier layer 1332 is in the range of 5°-45°, which avoids the deposition angle of the second carrier layer 1332 being too small, making it easier to achieve the desired deposition angle. In addition, it also avoids the deposition angle of the second carrier layer 1332 being too large, resulting in a smaller size of the second carrier layer 1332 at the edge portion 133a. For example, the deposition angle of the second carrier layer 1332 can be 5°, 10°, 20°, 40°, 45°, or any value between 5° and 45°.

[0131] For example, the evaporation angle B of the light-emitting layer 1333 is in the range of 45°-60°. This avoids the evaporation angle of the light-emitting layer 1333 being too small, which helps to increase the thickness ratio of the light-emitting layer 1333 in the edge portion 133a, increase the resistance of the edge portion 133a, increase the difficulty of carrier injection / transport at the edge portion 133a, and help alleviate leakage current in the edge portion 133a. In addition, it also avoids the evaporation angle of the light-emitting layer 1333 being too large, which helps to prevent the light-emitting layer 1333 from contacting the isolation structure 140 and prevent leakage current between the light-emitting layer 1333 and the isolation structure 140. For example, the evaporation angle B of the light-emitting layer 1333 can be 45°, 50°, 55°, 60° or any value between 45° and 60°.

[0132] In some embodiments, see Figure 1 The display panel 100 may include a plurality of first electrodes 131, and the plurality of first electrodes 131 and a plurality of light-emitting functional parts 133 are correspondingly disposed, with the first electrodes 131 disposed on the side of the corresponding light-emitting functional part 133 away from the substrate 110.

[0133] In some embodiments, see Figure 1 The outer contour of the orthographic projection of the light-emitting functional part 133 on the substrate 110 is located within the outer contour of the orthographic projection of the first electrode 131 on the substrate 110. The first electrode 131 is connected to the isolation structure 140. The material of the isolation structure 140 may include conductive material. Power supply voltage can be provided to the first electrode 131 through the isolation structure 140, thereby optimizing the wiring layout of the display panel 100.

[0134] In some embodiments, see Figure 1 The isolation structure 140 may include a conductive material, and there is a gap between the light-emitting functional part 133 and the isolation structure 140, so as to prevent leakage of current due to contact between the light-emitting functional part 133 and the isolation structure 140.

[0135] In some embodiments, the first electrode 131 can be a vapor-deposited element, that is, the first electrode 131 can be formed by vapor deposition. See also Figure 2a , Figure 10 and Figure 11 The evaporation angle B of the light-emitting layer 1333 can be smaller than the evaporation angle C of the first electrode 131. This allows the first electrode 131 formed by evaporation to be closer to the sidewall of the isolation structure 140 than the light-emitting layer 1333. This facilitates the connection between the first electrode 131 and the isolation structure 140, allowing the isolation structure 140 to provide power voltage to the first electrode 131. This optimizes the wiring layout of the display panel 100. In addition, it allows the light-emitting layer 1333 to be further away from the sidewall of the isolation structure 140, which helps to create a gap between the light-emitting layer 1333 and the isolation structure 140, thus preventing leakage current from contact between the light-emitting layer 1333 and the isolation structure 140.

[0136] For example, the evaporation angle of the first electrode 131 is greater than or equal to 60°. This results in a larger evaporation angle C for the first electrode 131, making the evaporated first electrode 131 closer to the sidewall of the isolation structure 140, which is beneficial for achieving overlap between the first electrode 131 and the isolation structure 140. For example, the evaporation angle of the first electrode 131 can be any value of 60°, 65°, 70°, 75°, or greater than 60°.

[0137] In some embodiments, see Figure 1 The isolation structure 140 includes a first isolation portion 141 and a second isolation portion 142. The second isolation portion 142 is located on the side of the first isolation portion 141 facing the substrate 110. The orthographic projection of the second isolation portion 142 on the substrate 110 is located within the orthographic projection of the first isolation portion 141 on the substrate 110, thereby making the isolation structure 140 form an undercut structure that is "larger at the top and smaller at the bottom", that is, the isolation structure 140 has an "eaves". In this way, during the formation of the light-emitting functional portion 133, the isolation structure 140 can separate the light-emitting functional portions 133 in two adjacent isolation openings 144.

[0138] It should be noted that, see Figure 2a and Figure 2bDuring the vapor deposition process of the light-emitting functional portion 133, under the shielding of the first isolation portion 141, the maximum thickness of the portion of the light-emitting functional portion 133 formed directly below the first isolation portion 141 (i.e., the edge portion 133a) is smaller than the maximum thickness of the remaining portion of the light-emitting functional portion 133 (i.e., the main body portion 133b). That is, the light-emitting functional portion 133 includes the edge portion 133a and the main body portion 133b. The edge portion 133a is located on the outer periphery of the main body portion 133b. The maximum thickness of the edge portion 133a is smaller than the maximum thickness of the main body portion 133b. The orthographic projection of the edge portion 133a on the substrate 110 is located within the orthographic projection of the first isolation portion 141 on the substrate 110. The orthographic projection of the main body portion 133b on the substrate 110 does not overlap with the orthographic projection of the first isolation portion 141 on the substrate 110. The edge portion 133a and the main body portion 133b have different thicknesses, resulting in differences in brightness and spectrum. If the edge portion 133a is also activated when the light-emitting function unit 133 is activated, it will cause uneven display brightness of the display panel 100 and leakage current in the edge portion 133a. Figure 2b The straight line G intersects the outer contour of the first isolation portion 141 projected onto the substrate at a point. The thickness of the edge portion 133a at the straight line G is the maximum thickness of the edge portion 133a, and the thickness of each film layer in the edge portion 133a at the straight line G is the maximum thickness of each film layer.

[0139] In some embodiments, see Figure 2a The outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 is located within the orthographic projection of the light-emitting layer 1333 of the edge portion 133a on the substrate 110. Thus, the area of ​​the first carrier layer 1331 of the edge portion 133a is smaller, while the area of ​​the light-emitting layer 1333 of the edge portion 133a is larger. This results in a smaller overlap area between the first carrier layer 1331 and the light-emitting layer 1333 of the edge portion 133a, which disrupts the structural integrity of the device at the edge of the light-emitting functional part 133. This alleviates the leakage caused by the additional carrier transport channel and also alleviates the uneven display brightness of the display panel 100, improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0140] In some embodiments, see Figure 2aThe outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 is located within the orthographic projection of the light-emitting layer 1333 of the edge portion 133a on the substrate 110. Thus, the area of ​​the second carrier layer 1332 of the edge portion 133a is smaller, while the area of ​​the light-emitting layer 1333 of the edge portion 133a is larger. This results in a smaller overlap area between the second carrier layer 1332 and the light-emitting layer 1333 of the edge portion 133a, which disrupts the structural integrity of the device at the edge of the light-emitting functional part 133. This alleviates the leakage caused by the additional carrier transport channel and also alleviates the uneven display brightness of the display panel 100, improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0141] In some embodiments, see Figure 2b In the edge portion 133a, the sum of the maximum thicknesses of the first carrier layer 1331 and the second carrier layer 1332 can be less than the maximum thickness of the light-emitting layer 1333. This results in a larger maximum thickness of the light-emitting layer 1333 and a larger proportion of the thickness of the light-emitting layer 1333 in the edge portion 133a. This leads to a larger resistance of the light-emitting functional part 133 in the edge portion 133a, which increases the difficulty of carrier injection / transmission in the edge portion 133a and helps to alleviate leakage current in the edge portion 133a.

[0142] In some embodiments, see Figure 2b In the edge portion 133a, the maximum thickness of the first carrier layer 1331 is less than the maximum thickness of the light-emitting layer 1333. This is beneficial to increasing the thickness ratio of the light-emitting layer 1333 in the edge portion 133a, and also to making the light-emitting layer 1333 closer to the isolation structure 140 relative to the first carrier layer 1331.

[0143] In some embodiments, see Figure 2b In the edge portion 133a, the maximum thickness of the second carrier layer 1332 is less than the maximum thickness of the light-emitting layer 1333. This is beneficial to increasing the thickness ratio of the light-emitting layer 1333 in the edge portion 133a, and also to making the light-emitting layer 1333 closer to the isolation structure 140 relative to the second carrier layer 1332.

[0144] In some embodiments, see Figure 2b In the edge portion 133a, the thickness of any one of the first carrier layer 1331, the second carrier layer 1332, and the light-emitting layer 1333 gradually decreases to 0 from the main body portion 133b to the edge portion 133a.

[0145] In some embodiments, the outer contour of the orthographic projection of the first isolation portion 141 on the substrate 110 is the first outer contour, and the outer contour of the orthographic projection of the side of the isolation structure 140 facing the substrate 110 on the substrate 110 is the second outer contour. The outer contours of the orthographic projections of the first carrier layer 1331, the second carrier layer 1332, and the light-emitting layer 1333 on the substrate 110 can all be located between the first outer contour and the second outer contour.

[0146] For example, the outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 is less than or equal to 0.1 μm from the first outer contour. This makes the distance between the outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 and the first outer contour closer, and makes the cutoff position of the first carrier layer 1331 closer to the outer contour of the first isolation portion 141. This makes the size of the first carrier layer 1331 at the edge portion 133a smaller, which is beneficial to destroying the integrity of the device structure at the edge of the light-emitting functional portion 133, thereby alleviating the leakage caused by the additional carrier transport channel. It can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0147] For example, the distance between the outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 and the first outer contour can be any value of 0 μm, 0.02 μm, 0.05 μm, 0.08 μm, 0.1 μm or less than 0.1 μm.

[0148] For example, the outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 is less than or equal to 0.1 μm from the first outer contour. This makes the outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 closer to the first outer contour, and the cutoff position of the second carrier layer 1332 is closer to the outer contour of the first isolation portion 141. This makes the size of the second carrier layer 1332 at the edge portion 133a smaller, which is beneficial to destroying the integrity of the device structure at the edge of the light-emitting functional portion 133. This alleviates the leakage caused by the additional carrier transport channel, and can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0149] For example, the distance between the outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 and the first outer contour can be any value of 0 μm, 0.02 μm, 0.05 μm, 0.08 μm, 0.1 μm or less than 0.1 μm.

[0150] For example, the distance between the outer contour of the orthographic projection of the light-emitting layer 1333 on the substrate 110 and the first outer contour is in the range of 0.4μm-0.7μm. This can prevent the distance from being too small, which would make the distance between the outer contour of the orthographic projection of the light-emitting layer 1333 on the substrate 110 and the first outer contour too large, making the cutoff position of the light-emitting layer 1333 closer to the isolation structure 140, making the thickness ratio of the light-emitting layer 1333 at the edge portion 133a larger, making the resistance of the light-emitting functional part 133 of the edge portion 133a larger, increasing the difficulty of carrier injection / transmission at the edge portion 133a, which is beneficial to alleviate leakage current at the edge portion 133a.

[0151] In some embodiments, the outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 is the third outer contour. The distance between the third outer contour and the first outer contour is smaller than the distance between the third outer contour and the second outer contour. This makes the cutoff position of the first carrier layer 1331 closer to the outer contour of the first isolation portion 141 and farther from the isolation structure 140. Consequently, the size of the first carrier layer 1331 at the edge portion 133a is smaller, which is beneficial to destroying the integrity of the device structure at the edge of the light-emitting functional portion 133. This alleviates the leakage caused by the additional carrier transport channel and also alleviates the uneven display brightness of the display panel 100, improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0152] In some embodiments, the outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 is the fourth outer contour. The distance between the fourth outer contour and the first outer contour is smaller than the distance between the fourth outer contour and the second outer contour. This makes the cutoff position of the second carrier layer 1332 closer to the outer contour of the first isolation portion 141 and farther from the isolation structure 140. This makes the size of the second carrier layer 1332 at the edge portion 133a smaller, which is beneficial to destroying the integrity of the device structure at the edge of the light-emitting functional portion 133. This alleviates the leakage caused by the additional carrier transport channel and can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0153] In some embodiments, the outer contour of the orthographic projection of the light-emitting layer 1333 on the substrate 110 is the fifth outer contour. The distance between the fifth outer contour and the first outer contour is greater than the distance between the fifth outer contour and the second outer contour. This makes the cutoff position of the light-emitting layer 1333 farther from the outer contour of the first isolation portion 141 and closer to the isolation structure 140. This makes the thickness of the light-emitting layer 1333 at the edge portion 133a larger, resulting in a larger resistance of the light-emitting functional portion 133 at the edge portion 133a. This increases the difficulty of carrier injection / transmission at the edge portion 133a and helps to alleviate leakage current at the edge portion 133a.

[0154] In some embodiments, see Figure 1 The display panel 100 includes a pixel defining layer 120, which is disposed between the substrate 110 and the isolation structure 140. The pixel defining layer 120 encloses and forms a plurality of pixel openings 121, which are correspondingly disposed with a plurality of light-emitting functional parts 133. At least a portion of the light-emitting functional parts 133 is disposed within the corresponding pixel openings 121.

[0155] For example, the light-emitting function unit 133 is provided in a one-to-one correspondence with the pixel opening 121.

[0156] In other embodiments, the pixel limiting layer 120 may not be provided on the substrate 110, which can help simplify the structure of the display panel 100, reduce the manufacturing cost of the display panel 100, and facilitate the thinning of the display panel 100. This application embodiment is described with the display panel 100 having the pixel limiting layer 120 provided.

[0157] In some embodiments, see Figure 3An isolation groove 122 is provided on the side of the pixel limiting layer 120 away from the substrate 110. The groove opening of the isolation groove 122 is provided on the side of the pixel limiting layer 120 away from the substrate 110. The side of the isolation structure 140 facing the substrate 110 is the first surface 1431. The distance between the orthographic projection of the groove opening of the isolation groove 122 on the substrate 110 and the orthographic projection of the first surface 1431 on the substrate 110 is greater than or equal to 0, so that the groove opening of the isolation groove 122 can be exposed outside the first surface 1431. Part of the wall of the isolation trench 122 is exposed outside the second carrier layer 1332, while part of the wall of the isolation trench 122 is not covered by the second carrier layer 1332. In this way, the isolation trench 122 can separate the second carrier layer 1332 located inside the isolation trench 122 from the second carrier layer 1332 located outside the isolation trench 122, so that no additional carrier transmission channel can be formed between the second carrier layer 1332 located inside the isolation trench 122 and the second carrier layer 1332 located outside the isolation trench 122. This alleviates the leakage caused by the additional carrier transmission channel, and can also alleviate the uneven display brightness of the display panel 100 and improve the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0158] It should be noted that the light-emitting layer 1333 can extend into the isolation trench 122, and the isolation trench 122 can separate the light-emitting layer 1333 located inside the isolation trench 122 from the light-emitting layer 1333 located outside the isolation trench 122. And / or, the first carrier layer 1331 can extend into the isolation trench 122, and the isolation trench 122 can separate the first carrier layer 1331 located inside the isolation trench 122 from the first carrier layer 1331 located outside the isolation trench 122. And / or, the first electrode 131 can extend into the isolation trench 122, and the isolation trench 122 can separate the first electrode 131 located inside the isolation trench 122 from the first electrode 131 located outside the isolation trench 122. Of course, after forming the second carrier layer 1332, a filling material can be provided in the isolation trench 122 so that the light-emitting layer 1333, the first carrier layer 1331, and the first electrode 131 do not extend into the isolation trench 122.

[0159] In some embodiments, see Figure 7 and Figure 8The orthographic projection of the isolation groove 122 on the substrate 110 is disposed on the outer periphery of the orthographic projection of the corresponding pixel opening 121 on the substrate 110. In this way, the extension length of the isolation groove 122 along the circumferential direction of the pixel opening 121 is small, which can prevent the isolation groove 122 from completely separating the first electrode 131 of the main body portion 133b and the first electrode 131 of the edge portion 133a when the isolation groove 122 is annular. This allows the first electrode 131 of the main body portion 133b and the first electrode 131 of the edge portion 133a to be connected together, so that the isolation structure 140 can provide power voltage to the first electrode 131 of the main body portion 133b through the first electrode 131 of the edge portion 133a, thereby optimizing the wiring layout of the display panel 100.

[0160] It should be noted that, Figures 3-6 In the diagram, S1 shows the edge of the evaporation cloud of the vapor-deposited material of the second carrier layer 1332, S2 is a straight line perpendicular to the substrate 110, and the extension direction of S3 is the same as the extension direction of the sidewall of the isolation trench 122.

[0161] In some embodiments, see Figure 6 The dimension of the bottom wall of the isolation tank 122 along the direction from the first side wall 1221 to the second side wall 1222 is L1, the depth of the isolation tank 122 is L2, the evaporation angle of the second carrier layer 1332 is A, tanA=L3 / L2, L2*tanA=(L3 / L2)*L2=L3, and the bottom wall of the isolation tank 122 corresponding to L3 is the maximum range on the bottom wall of the isolation tank 122 where the second carrier layer 1332 can be evaporated. When L2*tanA<L1, L3<L1, the dimension of the bottom wall of the isolation tank 122 along the direction from the first side wall 1221 to the second side wall 1222 is greater than the maximum range on the bottom wall of the isolation tank 122 where the second carrier layer 1332 can be evaporated. In other words, when the deposition angle of the second carrier layer 1332 is A, at least part of the bottom wall of the isolation tank 122 cannot be deposited with the second carrier layer 1332. This can isolate the second carrier layer 1332 located inside the isolation tank 122 from the second carrier layer 1332 located outside the isolation tank 122, so that no additional carrier transmission channel can be formed between the second carrier layer 1332 located inside the isolation tank 122 and the second carrier layer 1332 located outside the isolation tank 122. This alleviates the leakage caused by the additional carrier transmission channel and also alleviates the uneven display brightness of the display panel 100, improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0162] In some embodiments, see Figure 3The orthographic projection of the opening of the isolation trench 122 onto the substrate 110 lies within the orthographic projection of the first isolation portion 141 onto the substrate 110, and the edge portion 133a is at least partially disposed within the isolation trench 122. That is, the opening of the isolation trench 122 is directly below the first isolation portion 141, and the first isolation portion 141 has a good shielding effect on the opening of the isolation trench 122, making it less difficult for the second carrier layer 1332 to be deposited into the isolation trench 122, and making it easier to separate the second carrier layer 1332 located inside the isolation trench 122 from the second carrier layer 1332 located outside the isolation trench 122.

[0163] For example, in the edge portion 133a of the isolation trench 122, the maximum thickness of the first carrier layer 1331 is less than the maximum thickness of the light-emitting layer 1333. This is beneficial to increase the thickness ratio of the light-emitting layer 1333 in the edge portion 133a, and also to make the light-emitting layer 1333 closer to the isolation structure 140 relative to the first carrier layer 1331.

[0164] For example, in the edge portion 133a of the isolation trench 122, the maximum thickness of the second carrier layer 1332 is less than the maximum thickness of the light-emitting layer 1333. This is beneficial to increase the thickness ratio of the light-emitting layer 1333 in the edge portion 133a, and also to make the light-emitting layer 1333 closer to the isolation structure 140 relative to the second carrier layer 1332.

[0165] For example, in the edge portion 133a of the isolation trench 122, the sum of the maximum thicknesses of the first carrier layer 1331 and the second carrier layer 1332 is less than the maximum thickness of the light-emitting layer 1333, thus making the thickness of the light-emitting layer 1333 in the edge portion 133a relatively high.

[0166] For example, in the edge portion 133a of the isolation trench 122, the thickness of any one of the first carrier layer 1331, the second carrier layer 1332 and the light-emitting layer 1333 gradually decreases from the main body portion to the edge portion.

[0167] In some examples, see Figure 3 The angle between the second tank sidewall 1222 and the bottom wall of the isolation tank 122 is less than or equal to 90°. Thus, the second charge carrier layer 1332 cannot be deposited onto the second tank sidewall 1222 and part of the bottom wall of the isolation tank 122, and the second charge carrier layer 1332 located inside the isolation tank 122 and the second charge carrier layer 1332 located outside the isolation tank 122 can be separated.

[0168] For example, the angle between the side wall 1222 of the second groove and the bottom wall of the isolation groove 122 is any value of 45°, 60°, 75°, 90° or less than 90°.

[0169] In other examples, see Figure 4 The second trench sidewall 1222 is an inclined wall, with the end of the second trench sidewall 1222 away from the substrate 110 inclined away from the end near the substrate 110 in a direction away from the first trench sidewall 1221. The angle D between the second trench sidewall 1222 and the substrate 110 in the thickness direction is smaller than the evaporation angle A of the second charge carrier layer 1332. Thus, the second charge carrier layer 1332 cannot be deposited onto the second trench sidewall 1222 and part of the bottom wall of the isolation trench 122, thus isolating the second charge carrier layer 1332 located inside the isolation trench 122 from the second charge carrier layer 1332 located outside the isolation trench 122.

[0170] In some embodiments, see Figure 5 The orthographic projection of the opening of the isolation trench 122 on the substrate 110 does not overlap with the orthographic projection of the first isolation portion 141 on the substrate 110. The edge portion 133a is located outside the isolation trench 122. The distance between the first trench sidewall 1221 and the second trench sidewall 1222 gradually decreases along the direction from the bottom wall of the isolation trench 122 to the opening. In this way, the pixel limiting layer 120 at the isolation trench 122 forms an undercut structure that is larger at the top and smaller at the bottom. During the formation of the second carrier layer 1332, it is beneficial for the isolation trench 122 to separate the second carrier layer 1332 located inside the isolation trench 122 from the second carrier layer 1332 located outside the isolation trench 122. For example, the angle E between either the first trench sidewall 1221 or the second trench sidewall 1222 and the thickness direction of the substrate 110 is greater than the evaporation angle A of the second charge carrier layer 1332. In this way, the first charge carrier layer 1331 cannot be deposited onto the first trench sidewall 1221, the second trench sidewall 1222 and the bottom wall of part of the isolation trench 122, and the second charge carrier layer 1332 located in the isolation trench 122 and the second charge carrier layer 1332 located outside the isolation trench 122 can be separated.

[0171] The isolation structure 140 provided in the embodiments of this application will be described in detail below.

[0172] In some embodiments, the isolation structure 140 may refer to an undercut structure that is larger at the top and smaller at the bottom, capable of separating the light-emitting functional parts 133 corresponding to two adjacent isolation openings 144. The isolation structure 140 may be a structure formed by a single film layer or a structure formed by stacking multiple film layers.

[0173] For example, the cross-sectional shape of the isolation structure 140 can be an inverted trapezoid with a larger top and a smaller bottom, a "T" shape, or an "I" shape, etc.

[0174] In some embodiments, see Figure 1The isolation structure 140 includes a third isolation portion 143, which is located on the side of the second isolation portion 142 opposite to the first isolation portion 141. The orthographic projection of the second isolation portion 142 on the substrate 110 lies within the orthographic projection of the third isolation portion 143 on the substrate 110. Thus, in embodiments where the material of the isolation structure 140 is a conductive material, the isolation structure 140, by providing the stacked first isolation portion 141, second isolation portion 142, and third isolation portion 143, can reduce the resistance of the isolation structure 140, thereby reducing the power consumption of the display panel 100. For example, the cross-sectional shape of the isolation structure 140 formed by the first isolation portion 141, second isolation portion 142, and third isolation portion 143 can be I-shaped.

[0175] For example, at least one of the first isolation portion 141, the second isolation portion 142, and the third isolation portion 143 may be made of a conductive material. The material of at least one of the first isolation portion 141, the second isolation portion 142, and the third isolation portion 143 may include metals such as titanium, silver, copper, aluminum, and molybdenum, or alloys, or conductive oxides, such as any one or more of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), gallium zinc oxide, tantalum titanium oxide, tin oxide, cadmium oxide, and indium oxide. In other examples, at least one of the first isolation portion 141, the second isolation portion 142, and the third isolation portion 143 may be made of an insulating material.

[0176] For example, the material of the first isolation portion 141 may include at least one of titanium and molybdenum.

[0177] For example, the material of the second isolation section 142 may include at least one of aluminum, copper, and silver.

[0178] For example, the material of the third isolation section 143 may include at least one of titanium and molybdenum.

[0179] For example, at least part of the isolation structure 140 is made of a conductive material, and the first electrode 131 is electrically connected to the isolation structure 140. This facilitates the electrical connection of the first electrode 131 to the first power line through the isolation structure 140, thereby optimizing the wiring layout of the display panel 100.

[0180] In embodiments where at least one of the first isolation portion 141, the second isolation portion 142, and the third isolation portion 143 is made of a conductive material, the first electrode 131 can be electrically connected to the isolation structure 140, and the first electrode 131 can be electrically connected to at least one of the first isolation portion 141, the second isolation portion 142, and the third isolation portion 143. This facilitates the electrical connection of the first electrode 131 to the first power line via the isolation structure 140, connecting the first electrodes 131 located within each isolation opening 144 into a single unit and connecting them to the first power line for applying a power supply voltage to the first electrode 131, thereby optimizing the wiring layout of the display panel 100.

[0181] The following describes the light-emitting unit 130 provided in the embodiments of this application.

[0182] In some embodiments, see Figure 1 The display panel 100 includes a plurality of light-emitting units 130, which are correspondingly arranged with a plurality of isolation openings 144, and the light-emitting units 130 are at least partially disposed in the corresponding isolation openings 144.

[0183] See Figure 1 The light-emitting unit 130 may include a first electrode 131, a light-emitting functional part 133, and a second electrode 132 arranged in sequence, with the first electrode 131 disposed on the side of the second electrode 132 away from the substrate 110.

[0184] For example, one of the first electrode 131 and the second electrode 132 can be an anode, and the other of the first electrode 131 and the second electrode 132 can be a cathode. This application embodiment is illustrated using the example of the first electrode 131 being a cathode and the second electrode 132 being an anode.

[0185] For example, the first electrode 131 can be electrically connected to a first power line. The second electrode 132 can be electrically connected to a pixel driving circuit, which can be electrically connected to a second power line. One of the first and second power lines is used to transmit a high voltage, and the other is used to transmit a low voltage. For example, the first power line is used to transmit a low voltage, and the second power line is used to transmit a high voltage.

[0186] For example, the plurality of light-emitting units 130 includes, but is not limited to, red light-emitting units, green light-emitting units, and blue light-emitting units. In other examples, the plurality of light-emitting units 130 may also include white light-emitting units.

[0187] It should be noted that the light-emitting layer 1333 in the light-emitting functional part 133 of the light-emitting unit 130 of different colors is different. The light-emitting area of ​​the light-emitting unit 130 is determined by the contact area between the light-emitting functional part 133 and the second electrode 132, that is, the area in contact between the light-emitting functional part 133 and the second electrode 132 is the light-emitting area. In the embodiment where a pixel limiting layer 120 is provided on the substrate 110, the area enclosed by the pixel opening 121 near one end of the substrate 110 is the light-emitting area.

[0188] It should be noted that the arrangement of the pixel openings 121 can be the same as the arrangement of the light-emitting units 130. The distance between the light-emitting areas of the two light-emitting units 130 can be equal to the distance between the two pixel openings 121. The distance between the two pixel openings 121 refers to the distance between the side of one pixel opening 121 facing the substrate 110 and the side of the other pixel opening 121 facing the substrate 110.

[0189] The following describes the manufacturing method of the display panel 100 provided in the embodiments of this application.

[0190] This application provides a method for manufacturing a display panel 100, which can be used to manufacture the display panel 100 in the above embodiments. Referring to the figures, the method for manufacturing the display panel 100 may include:

[0191] S100: Provides a substrate.

[0192] First, a substrate 110 is provided. The substrate 110 can provide support for the remaining film layers to be applied subsequently.

[0193] S200: An isolation structure is formed on one side of the substrate; the isolation structure encloses and forms multiple isolation openings.

[0194] See Figure 1 After providing the substrate 110, it may include forming an isolation structure 140 on one side of the substrate 110, the isolation structure 140 enclosing a plurality of isolation openings 144.

[0195] S300: A plurality of light-emitting functional parts are formed on one side of the substrate; the plurality of light-emitting functional parts and a plurality of isolation openings are correspondingly disposed, and at least a portion of the light-emitting functional parts are disposed in the corresponding isolation openings; the light-emitting functional parts include a light-emitting layer and a first carrier layer stacked along the direction away from the substrate; wherein, the outer contour of the orthographic projection of the first carrier layer on the substrate is located within the outer contour of the orthographic projection of the light-emitting layer on the substrate.

[0196] See Figure 1After forming an isolation structure 140 on one side of the substrate 110, a plurality of light-emitting functional portions 133 may be formed on one side of the substrate 110. The plurality of light-emitting functional portions 133 and a plurality of isolation openings 144 are correspondingly disposed, with at least a portion of the light-emitting functional portions 133 disposed within the corresponding isolation openings 144. Each light-emitting functional portion 133 includes a light-emitting layer 1333 and a first carrier layer 1331 arranged in a direction away from the substrate 110. The outer contour of the orthographic projection of the first carrier layer 1331 on the substrate 110 is located within the outer contour of the orthographic projection of the light-emitting layer 1333 on the substrate 110. Thus, the area of ​​the first carrier layer 1331 is smaller, the area of ​​the light-emitting layer 1333 is larger, and the overlap area between the edge of the light-emitting layer 1333 and the first carrier layer 1331 is smaller. This reduces the structural integrity of the device at the edge of the light-emitting functional unit 133, reduces the additional carrier transport channel formed between the edge of the light-emitting layer 1333 and the first carrier layer 1331, and alleviates the leakage caused by the additional carrier transport channel. When the light-emitting functional unit 133 is activated, the area of ​​the edge of the light-emitting functional unit 133 that is activated is reduced, thereby alleviating the uneven display brightness of the display panel 100 and improving the display effect of the display panel 100.

[0197] In some embodiments, a plurality of light-emitting functional parts 133 are formed on one side of the substrate 110, which may include the formation of a light-emitting layer 1333 and a first carrier layer 1331 by vapor deposition.

[0198] In some embodiments, before the light-emitting layer 1333 and the first carrier layer 1331 are formed by vapor deposition, a second carrier layer 1332 may be formed by vapor deposition. The outer contour of the orthographic projection of the second carrier layer 1332 on the substrate 110 is located within the outer contour of the orthographic projection of the light-emitting layer 1333 on the substrate 110. Thus, the area of ​​the second carrier layer 1332 is smaller, the area of ​​the light-emitting layer 1333 is larger, and the overlap area between the edge of the light-emitting layer 1333 and the second carrier layer 1332 is smaller. This reduces the structural integrity of the device at the edge of the light-emitting functional unit 133, decreases the additional carrier transport channels formed between the edge of the light-emitting layer 1333 and the second carrier layer 1332, and alleviates leakage caused by these additional carrier transport channels. When the light-emitting functional unit 133 is activated, the area of ​​the edge of the light-emitting functional unit 133 that is activated is reduced, thereby alleviating uneven display brightness of the display panel 100 and improving the display effect of the display panel 100.

[0199] In some embodiments, the evaporation angle of the first carrier layer 1331 is smaller than the evaporation angle of the light-emitting layer 1333. This allows the orthographic projection of the first carrier layer 1331 on the substrate 110 to lie within the orthographic projection of the light-emitting layer 1333 on the substrate 110, thereby mitigating leakage caused by the additional carrier transport channel. When the light-emitting function 133 is activated, the area of ​​the edge of the light-emitting function 133 that is activated is reduced, thereby alleviating uneven display brightness of the display panel 100 and improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0200] In some embodiments, the evaporation angle of the second carrier layer 1332 is smaller than that of the light-emitting layer 1333. This allows the orthographic projection of the second carrier layer 1332 onto the substrate 110 to lie within the orthographic projection of the light-emitting layer 1333 onto the substrate 110, thereby mitigating leakage caused by the additional carrier transport channel. When the light-emitting function 133 is activated, the area of ​​the edge of the light-emitting function 133 that is activated is reduced, thereby alleviating uneven display brightness of the display panel 100 and improving the display effect of the display panel 100. The principle has been explained and will not be repeated here.

[0201] For example, the evaporation angle of the first carrier layer 1331 is in the range of 5°-45°. For instance, the evaporation angle of the first carrier layer 1331 can be 5°, 10°, 20°, 40°, 45° or any value between 5° and 45°.

[0202] For example, the evaporation angle of the second carrier layer 1332 is in the range of 5°-45°. For instance, the evaporation angle of the second carrier layer 1332 can be 5°, 10°, 20°, 40°, 45° or any value between 5° and 45°.

[0203] For example, the evaporation angle of the light-emitting layer 1333 is in the range of 45°-60°. For instance, the evaporation angle of the light-emitting layer 1333 can be 45°, 50°, 55°, 60° or any value between 45° and 60°.

[0204] The following describes the display device provided in the embodiments of this application.

[0205] This application provides a display device, which may include the display panel 100 in the above embodiments. The display device may be an electronic paper device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, smart bracelet, smartwatch, supercomputer, navigator, wireless device, personal digital assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, clock, calculator, television monitor, computer monitor, automotive display (e.g., odometer display, etc.), cockpit controller and / or display, camera view display (e.g., display of rearview camera in a vehicle), electronic billboard or sign, projector, and other mobile or fixed terminals.

[0206] For example, the display panel 100 can be an organic light-emitting diode (OLED) display panel, a micro organic light-emitting diode (Micro OLED) display panel, or a quantum dot light-emitting diode (QLED) display. This application embodiment uses an OLED display panel as an example for illustration.

[0207] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0208] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0209] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate, and the isolation structure encloses and forms a plurality of isolation openings; Multiple light-emitting functional parts are disposed on one side of the substrate, and the multiple light-emitting functional parts and the multiple isolation openings are correspondingly disposed, with at least a portion of the light-emitting functional parts disposed within the corresponding isolation openings; The light-emitting functional part includes a light-emitting layer and a first carrier layer stacked along a direction away from the substrate; Wherein, the outer contour of the orthographic projection of the first charge carrier layer on the substrate is located within the outer contour of the orthographic projection of the light-emitting layer on the substrate.

2. The display panel according to claim 1, characterized in that, The light-emitting functional part includes a second charge carrier layer, which is disposed between the light-emitting layer and the substrate; The outer contour of the orthogonal projection of the second charge carrier layer on the substrate is located within the outer contour of the orthogonal projection of the light-emitting layer on the substrate. Preferably, the first carrier layer includes at least one of an electron transport layer, an electron injection layer, and a hole blocking layer; Preferably, the second carrier layer includes at least one of a hole injection layer, a hole transport layer, and an electron blocking layer.

3. The display panel according to claim 2, characterized in that, Both the second charge carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the second charge carrier layer is smaller than that of the light-emitting layer. Preferably, the evaporation angle of the second charge carrier layer is in the range of 5°-45°.

4. The display panel according to any one of claims 1-3, characterized in that, Both the first charge carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the first charge carrier layer is smaller than the vapor deposition angle of the light-emitting layer. Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°; Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°.

5. The display panel according to any one of claims 1-3, characterized in that, The display panel includes a plurality of first electrodes, and the plurality of first electrodes and the plurality of light-emitting functional parts are correspondingly disposed thereon. The first electrodes are disposed on the side of the corresponding light-emitting functional part away from the substrate. Preferably, the material of the isolation structure includes a conductive material, the outer contour of the orthographic projection of the light-emitting functional part on the substrate is located within the outer contour of the orthographic projection of the first electrode on the substrate, and the first electrode is overlapped and connected to the isolation structure; Preferably, there is a gap between the light-emitting functional part and the isolation structure; Preferably, both the first electrode and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the light-emitting layer is smaller than that of the first electrode. Preferably, the evaporation angle of the first electrode is greater than or equal to 60°.

6. The display panel according to claim 2 or 3, characterized in that, The light-emitting functional part includes an edge part and a main body part. The edge part is disposed on the outer periphery of the main body part, and the maximum thickness of the edge part is less than the maximum thickness of the main body part. Preferably, the outer contour of the orthographic projection of the first charge carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge. Preferably, the outer contour of the orthographic projection of the second charge carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge. Preferably, in the edge portion, the maximum thickness of the first charge carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion, the maximum thickness of the second charge carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion, the sum of the maximum thicknesses of the first charge carrier layer and the second charge carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion, the thickness of any one of the first charge carrier layer, the second charge carrier layer, and the light-emitting layer gradually decreases to 0 from the main body portion to the edge portion; Preferably, the isolation structure includes a first isolation portion and a second isolation portion, the second isolation portion is located on the side of the first isolation portion facing the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate; Preferably, the orthographic projection of the edge portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the orthographic projection of the main body portion on the substrate does not overlap with the orthographic projection of the first isolation portion on the substrate; Preferably, the isolation structure includes a third isolation portion located on the side of the second isolation portion away from the first isolation portion, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate.

7. The display panel according to claim 6, characterized in that, The outer contour of the orthographic projection of the first isolation portion on the substrate is the first outer contour, and the outer contour of the orthographic projection of the side of the isolation structure facing the substrate on the substrate is the second outer contour. The outer contours of the orthographic projections of the first carrier layer, the second carrier layer, and the light-emitting layer on the substrate are all located between the first outer contour and the second outer contour. Preferably, the distance between the outer contour of the orthographic projection of the first charge carrier layer on the substrate and the first outer contour is less than or equal to 0.1 μm; Preferably, the distance between the outer contour of the orthographic projection of the second charge carrier layer on the substrate and the first outer contour is less than or equal to 0.1 μm; Preferably, the distance between the outer contour of the orthographic projection of the light-emitting layer on the substrate and the first outer contour is in the range of 0.4μm-0.7μm; Preferably, the outer contour of the orthographic projection of the first charge carrier layer on the substrate is a third outer contour, and the distance between the third outer contour and the first outer contour is less than the distance between the third outer contour and the second outer contour. Preferably, the outer contour of the orthographic projection of the second charge carrier layer on the substrate is a fourth outer contour, and the distance between the fourth outer contour and the first outer contour is less than the distance between the fourth outer contour and the second outer contour. Preferably, the outer contour of the orthographic projection of the light-emitting layer on the substrate is a fifth outer contour, and the distance between the fifth outer contour and the first outer contour is greater than the distance between the fifth outer contour and the second outer contour.

8. The display panel according to claim 6, characterized in that, The display panel includes a pixel defining layer disposed between the substrate and the isolation structure. The pixel defining layer encloses and forms a plurality of pixel openings. The plurality of pixel openings are correspondingly disposed with a plurality of light-emitting functional parts. At least a portion of the light-emitting functional parts are disposed within the corresponding pixel openings. Preferably, the pixel defining layer has an isolation groove on the side away from the substrate, the groove opening of the isolation groove is disposed on the side of the pixel defining layer away from the substrate, the side of the isolation structure facing the substrate is a first surface, the distance between the orthographic projection of the groove opening of the isolation groove on the substrate and the orthographic projection of the first surface on the substrate is greater than or equal to 0, and part of the groove wall of the isolation groove is exposed outside the second carrier layer. Preferably, the orthographic projection of the isolation groove on the substrate is disposed on the outer periphery of the orthographic projection of the corresponding pixel opening on the substrate; Preferably, the isolation trench includes a first trench sidewall close to the first surface and a second trench sidewall away from the first surface. The dimension of the bottom wall of the isolation trench along the direction from the first trench sidewall to the second trench sidewall is L1, the trench depth of the isolation trench is L2, and the evaporation angle of the second carrier layer is A. The A, L1, and L2 satisfy the following formula: L2*tanA<L1.

9. The display panel according to claim 8, characterized in that, The orthographic projection of the opening of the isolation groove on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the edge portion is at least partially disposed in the isolation groove; The angle between the sidewall of the second groove and the bottom wall of the isolation groove is less than or equal to 90°; or, The second trench sidewall is an inclined wall. The end of the second trench sidewall away from the substrate is inclined in a direction away from the first trench sidewall relative to the end close to the substrate. The angle between the second trench sidewall and the thickness direction of the substrate is smaller than the evaporation angle of the second carrier layer. Preferably, in the edge portion of the isolation trench, the maximum thickness of the first carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion of the isolation trench, the maximum thickness of the second carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion of the isolation trench, the sum of the maximum thicknesses of the first charge carrier layer and the second charge carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion of the isolation trench, the thickness of any one of the first charge carrier layer, the second charge carrier layer, and the light-emitting layer gradually decreases from the main body portion to the edge portion.

10. The display panel according to claim 8, characterized in that, The orthographic projection of the opening of the isolation groove on the substrate does not overlap with the orthographic projection of the first isolation portion on the substrate, and the edge portion is located outside the isolation groove; The distance between the first and second tank sidewalls gradually decreases along the direction from the bottom wall of the isolation tank to the opening of the tank, and the angle between either the first or second tank sidewall and the thickness direction of the substrate is greater than the evaporation angle of the second charge carrier layer.

11. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate, and the isolation structure encloses and forms a plurality of isolation openings; Multiple light-emitting functional parts are disposed on one side of the substrate, and the multiple light-emitting functional parts and the multiple isolation openings are correspondingly disposed, with at least a portion of the light-emitting functional parts disposed within the corresponding isolation openings; The light-emitting functional part includes a light-emitting layer and a first carrier layer stacked along a direction away from the substrate; The light-emitting functional part includes an edge part and a main body part. The edge part is disposed on the outer periphery of the main body part. The maximum thickness of the edge part is less than the maximum thickness of the main body part. In the edge part, the maximum thickness of the first charge carrier layer is less than the maximum thickness of the light-emitting layer.

12. The display panel according to claim 11, characterized in that, The light-emitting functional part includes a second charge carrier layer, which is disposed between the light-emitting layer and the substrate; Preferably, in the edge portion, the maximum thickness of the second charge carrier layer is less than the maximum thickness of the light-emitting layer; Preferably, in the edge portion, the thickness of any one of the first charge carrier layer, the second charge carrier layer, and the light-emitting layer gradually decreases to 0 from the main body portion to the edge portion; Preferably, the display panel includes a plurality of first electrodes, and the plurality of first electrodes and the plurality of light-emitting functional parts are correspondingly disposed, wherein the first electrodes are disposed on the side of the corresponding light-emitting functional part away from the substrate; Preferably, the material of the isolation structure includes a conductive material, the outer contour of the orthographic projection of the light-emitting functional part on the substrate is located within the outer contour of the orthographic projection of the first electrode on the substrate, and the first electrode is overlapped and connected to the isolation structure; Preferably, there is a gap between the light-emitting functional part and the isolation structure; Preferably, both the first electrode and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the light-emitting layer is smaller than that of the first electrode. Preferably, the evaporation angle of the first electrode is greater than or equal to 60°; Preferably, the outer contour of the orthographic projection of the first charge carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge. Preferably, the outer contour of the orthographic projection of the second charge carrier layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate at the edge. Preferably, both the first charge carrier layer and the light-emitting layer are vapor-deposited components, and the vapor deposition angle of the first charge carrier layer is smaller than the vapor deposition angle of the light-emitting layer. Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°; Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°; Preferably, the second charge carrier layer is a vapor-deposited component, and the vapor deposition angle of the second charge carrier layer is smaller than the vapor deposition angle of the light-emitting layer; Preferably, the evaporation angle of the second charge carrier layer is in the range of 5°-45°.

13. The display panel according to claim 11, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion, the second isolation portion being located on the side of the first isolation portion facing the substrate, and the orthographic projection of the second isolation portion on the substrate being located within the orthographic projection of the first isolation portion on the substrate; The orthographic projection of the edge portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the orthographic projection of the main body portion on the substrate does not overlap with the orthographic projection of the first isolation portion on the substrate; Preferably, the isolation structure includes a third isolation portion located on the side of the second isolation portion away from the first isolation portion, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate.

14. A display device, characterized in that, Includes the display panel described in any one of claims 1-13 above.

15. A method for manufacturing a display panel, characterized in that, include: Provide substrate; An isolation structure is formed on one side of the substrate; The isolation structure encloses and forms multiple isolation openings; Multiple light-emitting functional parts are formed on one side of the substrate; The plurality of light-emitting functional units and the plurality of isolation openings are correspondingly disposed, and at least a portion of the light-emitting functional units are disposed within the corresponding isolation openings; the light-emitting functional units include a light-emitting layer and a first charge carrier layer arranged in a direction away from the substrate; wherein, the outer contour of the orthographic projection of the first charge carrier layer on the substrate is located within the outer contour of the orthographic projection of the light-emitting layer on the substrate.

16. The method for manufacturing a display panel according to claim 15, characterized in that, The plurality of light-emitting functional parts formed on one side of the substrate include: The light-emitting layer and the first charge carrier layer are formed by vapor deposition; Preferably, before the evaporation deposition forms the light-emitting layer and the first charge carrier layer, the method further includes: A second carrier layer is formed by vapor deposition; Preferably, the evaporation angle of the first carrier layer is smaller than the evaporation angle of the light-emitting layer; Preferably, the evaporation angle of the second charge carrier layer is smaller than the evaporation angle of the light-emitting layer; Preferably, the evaporation angle of the first carrier layer is in the range of 5°-45°; Preferably, the evaporation angle of the second carrier layer is in the range of 5°-45°; Preferably, the evaporation angle of the light-emitting layer is in the range of 45°-60°.

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