Display panel, display device and preparation method of display panel

Abstract

The embodiment of the invention provides a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate; the isolation structure is arranged on one side of the substrate, an isolation opening is defined by the isolation structure, the isolation structure comprises an isolation part and a blocking part located on the side, away from the substrate, of the isolation part, and the orthographic projection of the isolation part on the substrate is located in the orthographic projection of the blocking part on the substrate; the side, facing the isolation opening, of the blocking part is provided with a receding face inclining towards the side, away from the isolation opening, of the substrate in the direction away from the substrate, and the side, facing the isolation opening, of the receding face is provided with a receding edge. The light-emitting device layer comprises a light-emitting unit arranged in the isolation opening, the side, facing the isolation part, of the light-emitting unit is provided with a lap joint edge, the acute angle between the abdicating face and the surface of the substrate is a first shielding angle, and the acute angle between a first virtual connecting face connected between the adjacent abdicating edge and lap joint edge and the surface of the substrate is a first included angle; the first shielding angle is smaller than the first included angle.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is an active light-emitting device. Compared with the traditional liquid crystal display (LCD) display method, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer and a glass substrate. When an electric current passes through, the organic material will emit light. Therefore, OLED display panels can significantly save electricity, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a larger viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCD, and are one of the most popular technologies in flat-panel display technology.

[0003] When evaporating the light-emitting unit in the OLED display panel, the material of the light-emitting unit is easily blocked by other structures of the display panel, resulting in poor evaporation uniformity of the light-emitting unit. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, aiming to improve the uniformity of evaporation of light-emitting units in the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, which includes: a substrate; an isolation structure, which is arranged on one side of the substrate and encloses an isolation opening, the isolation structure includes an isolation portion and a blocking portion located on the side of the isolation portion away from the substrate, the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate, the blocking portion has a yield surface on the side facing the isolation opening, the yield surface is inclined toward the side away from the isolation opening in the direction away from the substrate, and the yield surface has a yield edge on the side facing the isolation opening; a light-emitting device layer, including a light-emitting unit arranged in the isolation opening, the light-emitting unit has an overlapping edge on the side facing the isolation portion, wherein the acute angle between the yield surface and the surface of the substrate is a first blocking angle, the first virtual connection surface is connected between adjacent yield edges and overlapping edges, the acute angle between the first virtual connection surface and the surface of the substrate is a first included angle, and the first blocking angle is smaller than the first included angle.

[0006] According to an implementation of the first aspect of the present application, the light-emitting unit includes a light-emitting structure and a first electrode disposed on a side of the light-emitting structure away from the substrate, and the overlapping edge is located on a side of the first electrode facing the isolation portion.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode is overlapped with the isolation portion, and the material of the isolation portion includes a conductive material.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion has a conductive edge on the side facing the isolation opening, the first virtual blocking surface is connected between the adjacent giving way edge and the conductive edge, the acute angle between the first virtual blocking surface and the substrate surface is the second blocking angle, and the first angle is smaller than the second blocking angle.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting structure has a sub-edge on the side facing the isolation portion, the second virtual connection surface is connected between the adjacent yielding edge and the sub-edge, the acute angle between the second virtual connection surface and the substrate surface is the second angle, and the first blocking angle is smaller than the second angle.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the first angle is smaller than the second angle.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting structure and the isolation portion are spaced apart.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the second shielding angle is smaller than the second included angle.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the cross-sectional area of ​​the isolation portion gradually decreases in a direction away from the substrate.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion has a conductive surface on a side facing the isolation opening, and in a direction away from the substrate, the conductive surface is inclined toward a side away from the isolation opening.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a pixel definition layer located on the side of the substrate facing the isolation structure, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate, and the light-emitting unit is located within the pixel opening.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure is disposed on a side of the pixel defining portion facing away from the substrate.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the pixel defining portion has an enclosing surface on the side facing the pixel opening, the enclosing surface has an enclosing edge on the side facing away from the isolation structure, the second virtual blocking surface is connected between the adjacent enclosing edge and the yielding edge, the acute angle between the second virtual blocking surface and the substrate surface is a third blocking angle, and the third blocking angle is smaller than the first angle.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the acute angle between the enclosed surface and the substrate surface is a fourth blocking angle, and the fourth blocking angle is smaller than the first angle.

[0019] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel of any of the above-mentioned embodiments of the first aspect.

[0020] The third aspect of the present application also provides a method for preparing a display panel, including:

[0021] An isolation structure is formed on the substrate, the isolation structure encloses an isolation opening, the isolation structure includes an isolation portion and a blocking portion located on a side of the isolation portion facing away from the substrate, the blocking portion has a yielding surface on a side facing the isolation opening, the yielding surface is inclined toward the side facing away from the isolation opening in a direction away from the substrate, and the yielding surface has a yielding edge on a side facing the isolation opening, and the acute angle between the yielding surface and the surface of the substrate is a first shielding angle;

[0022] A light-emitting device material is evaporated in the isolation opening to form a light-emitting device layer, wherein the light-emitting device layer includes a light-emitting unit arranged in the isolation opening, wherein when the light-emitting device material is evaporated, the minimum acute angle between the moving direction of the light-emitting device material in the isolation opening and the substrate is a first angle, and the first blocking angle is smaller than the first angle.

[0023] According to an implementation of the third aspect of the present application, a light-emitting device material is evaporated in the isolation opening to form a light-emitting device layer, the light-emitting device layer includes a light-emitting unit arranged in the isolation opening, wherein when the light-emitting device material is evaporated, the minimum acute angle between the moving direction of the light-emitting device material in the isolation opening and the substrate is the first angle, and the step of the first blocking angle being less than the first angle further includes:

[0024] The light-emitting device material includes a first electrode material, and the first electrode material is evaporated in the isolation opening to form a first electrode arranged in the isolation opening. When evaporating the first electrode material, the minimum acute angle between the movement direction of the first electrode material in the isolation opening and the substrate is the first angle.

[0025] According to any of the aforementioned embodiments of the third aspect of the present application, the first electrode is overlapped with the isolation portion, and the material of the isolation portion includes a conductive material.

[0026] According to any of the aforementioned embodiments of the third aspect of the present application, a light-emitting device material is evaporated in the isolation opening to form a light-emitting device layer, the light-emitting device layer includes a light-emitting unit arranged in the isolation opening, and the light-emitting unit overlaps the isolation portion, wherein when the light-emitting device material is evaporated, the minimum acute angle between the moving direction of the light-emitting device material in the isolation opening and the substrate is the first angle, and the step of the first blocking angle being less than the first angle also includes:

[0027] The light-emitting device material also includes a light-emitting structure material. The light-emitting structure material and the first electrode material are sequentially vapor-deposited in the isolation opening to form a light-emitting structure arranged in the isolation opening and a first electrode located on the side of the light-emitting structure away from the substrate. When the light-emitting structure material is vapor-deposited, the minimum acute angle between the movement direction of the light-emitting structure material located in the isolation opening and the substrate is the second angle, and the first shielding angle is smaller than the second angle.

[0028] According to any of the aforementioned embodiments of the third aspect of the present application, the first angle is smaller than the second angle.

[0029] In the display panel provided in the embodiment of the present application, the display panel includes a substrate, an isolation structure and a light-emitting device layer. The isolation structure is arranged on one side of the substrate and encloses to form an isolation opening. The light-emitting unit of the light-emitting device layer can be arranged in the isolation opening to realize the light-emitting display of the display panel. The isolation structure includes an isolation part and a blocking part located on the side of the isolation part away from the substrate. The orthographic projection of the isolation part on the substrate is located within the orthographic projection of the blocking part on the substrate. Therefore, a concave structure is formed under the blocking part, so that when the light-emitting device layer is evaporated, the blocking part can block at least part of the material used to prepare the light-emitting device layer in the thickness direction of the display panel, so that the light-emitting device layer can be disconnected at the isolation structure, thereby forming a plurality of light-emitting units arranged at intervals. The blocking portion has a yield surface on the side facing the isolation opening, the yield surface has a yield edge on the side facing the isolation opening, the light-emitting unit has an overlapping edge on the side facing the isolation portion, and the first virtual connection surface is connected between the adjacent yield edges and the overlapping edges. Although part of the material of the light-emitting device layer will be blocked by the blocking portion, when the evaporation source evaporates the material of the light-emitting device layer, the material of the light-emitting device layer often enters the isolation opening at an angle slightly deviated from the thickness direction, and an acute angle will exist between the first virtual connection surface and the surface of the substrate, and the acute angle is the first angle. By arranging the giving way surface in a direction away from the substrate and tilting it toward the side away from the isolation opening, so that the acute angle between the giving way surface and the surface of the substrate is a first shielding angle, and the first shielding angle is set to be smaller than the first included angle, the blocking portion at the giving way surface is not likely to produce excessive shielding for the material of the light-emitting device layer entering the isolation opening at a certain angle, so that the material of the light-emitting device layer entering the isolation opening is not easily blocked by the blocking portion and can be more evenly located in the isolation opening to form a light-emitting unit with a more uniform thickness, that is, the evaporation uniformity of the light-emitting unit in the display panel is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0033] Figure 3 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0034] Figures 4 to 6 It is a schematic diagram of a method for preparing a display panel provided in another embodiment of the present application.

[0035] Description of reference numerals:

[0036] 100. Substrate;

[0037] 200, pixel definition layer; 210, pixel definition portion; 211, enclosure surface; 211a, enclosure edge; 220, pixel opening;

[0038] 300, light-emitting device layer; 300a, light-emitting unit; 300b, overlapping edge; 310, light-emitting structure; 310a, sub-edge; 320, first electrode;

[0039] 400, isolation structure; 400a, isolation opening; 410, isolation portion; 410a, conductive edge; 411, conductive surface; 420, blocking portion; 421, yielding surface; 421a, yielding edge;

[0040] 500. a second electrode;

[0041] a. a first virtual connection plane;

[0042] b. a second virtual connection plane;

[0043] c. a first virtual occluding surface;

[0044] d. second virtual occluding surface;

[0045] i. first angle;

[0046] j, second angle;

[0047] k, first occlusion angle;

[0048] p, second occlusion angle;

[0049] q, the third occlusion angle;

[0050] r, fourth occlusion angle;

[0051] Z, thickness direction. DETAILED DESCRIPTION

[0052] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0053] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] In order to better understand the present application, various embodiments of a display panel, a display device, and a method for manufacturing a display panel will be described below with reference to the accompanying drawings.

[0056] Figure 1 is a schematic diagram of the relative positions of a display panel and an evaporation source provided in an embodiment of the present application, Figure 2 yes Figure 1 The Z direction in the figure is the thickness direction Z, and the dotted arrow direction is the evaporation direction of the material of the light emitting device layer 300, for example, the evaporation direction X of the material of the first electrode 320 and the evaporation direction Y of the material of the light emitting structure 310.

[0057] like Figure 1 to Figure 2As shown, an embodiment of the first aspect of the present application provides a display panel, the display panel comprising: a substrate 100; an isolation structure 400, which is arranged on one side of the substrate 100 and encloses an isolation opening 400a, the isolation structure 400 comprises an isolation portion 410 and a blocking portion 420 located on the side of the isolation portion 410 away from the substrate 100, the orthographic projection of the isolation portion 410 on the substrate 100 is located within the orthographic projection of the blocking portion 420 on the substrate 100, and the side of the blocking portion 420 facing the isolation opening 400a has a clearance surface 421, and in the direction away from the substrate 100, the clearance surface 421 faces away from the isolation opening 400a. The side of the substrate 100 is inclined, and the giving way surface 421 has a giving way edge 421a on the side facing the isolation opening 400a; the light-emitting device layer 300 includes a light-emitting unit 300a arranged in the isolation opening 400a, and the light-emitting unit 300a has an overlapping edge 300b on the side facing the isolation portion 410, wherein the acute angle between the giving way surface 421 and the surface of the substrate 100 is a first blocking angle k, the first virtual connection surface a is connected between the adjacent giving way edge 421a and the overlapping edge 300b, the acute angle between the first virtual connection surface a and the surface of the substrate 100 is a first included angle i, and the first blocked angle k is smaller than the first included angle i.

[0058] In the display panel provided in the embodiment of the present application, the display panel includes a substrate 100, an isolation structure 400 and a light-emitting device layer 300. The isolation structure 400 is arranged on one side of the substrate 100 and encloses an isolation opening 400a. The light-emitting unit 300a of the light-emitting device layer 300 can be arranged in the isolation opening 400a to realize the light-emitting display of the display panel.

[0059] The isolation structure 400 includes an isolation portion 410 and a blocking portion 420 located on the side of the isolation portion 410 away from the substrate 100. The orthographic projection of the isolation portion 410 on the substrate 100 is located within the orthographic projection of the blocking portion 420 on the substrate 100. Therefore, a concave structure is formed under the blocking portion 420, so that when the light-emitting device layer 300 is evaporated, the blocking portion 420 can block at least part of the material used to prepare the light-emitting device layer 300 in the thickness direction Z of the display panel, so that the light-emitting device layer 300 can be disconnected at the isolation structure 400, thereby forming a plurality of light-emitting units 300a arranged at intervals. Therefore, when evaporating the light-emitting device layer 300, there is no need to set a mask with high precision, for example, when evaporating the light-emitting device layer 300, there is no need to set a high-precision metal mask (Fine Metal Mask, FMM), thereby reducing the production cost of the display panel.

[0060] The blocking portion 420 has a clearance surface 421 on the side facing the isolation opening 400a, and the clearance surface 421 has a clearance edge 421a on the side facing the isolation opening 400a. The light-emitting unit 300a has an overlapping edge 300b on the side facing the isolation portion 410. The first virtual connection surface a is connected between the adjacent clearance edges 421a and the overlapping edges 300b. Although part of the material of the light-emitting device layer 300 will be blocked by the blocking portion 420, when the evaporation source evaporates the material of the light-emitting device layer 300, the material of the light-emitting device layer 300 often enters the isolation opening 400a at an angle slightly deviated from the thickness direction Z, and an acute angle will exist between the first virtual connection surface a and the surface of the substrate 100, and the acute angle is the first angle i. By arranging the clearance surface 421 in a direction away from the substrate 100 and tilting toward the side away from the isolation opening 400a, so that the acute angle between the clearance surface 421 and the surface of the substrate 100 is the first blocking angle k, and the first blocking angle k is set to be smaller than the first included angle i, the blocking portion 420 at the clearance surface 421 is not likely to produce excessive shielding for the material of the light-emitting device layer 300 entering the isolation opening 400a at a certain angle, so that the material of the light-emitting device layer 300 entering the isolation opening 400a is not easily blocked by the blocking portion 420, and can be more evenly located in the isolation opening 400a, so as to form a light-emitting unit 300a with a more uniform thickness, that is, the evaporation uniformity of the light-emitting unit 300a in the display panel is improved.

[0061] In the embodiment of the present application, the surface of the substrate 100 may refer to the surface of the substrate 100 facing the isolation structure 400 , and the thickness direction Z may be perpendicular to the surface of the substrate 100 .

[0062] Optionally, the substrate 100 may include a substrate and an array substrate, and the array substrate may include a driving circuit. For example, the array substrate may include a first signal line layer, a second signal line layer, and a third signal line layer that are arranged on one side of the substrate and are stacked. An insulating layer is provided between adjacent signal line layers. Exemplarily, the pixel driving circuit provided on the array substrate includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first signal line layer, the second plate may be located in the second signal line layer, and the source and the drain may be located in the third signal line layer.

[0063] like Figure 1As shown, when evaporating the material of the light-emitting device layer 300, the number of evaporation sources can be multiple, so that the light-emitting device layer 300 in an isolation opening 400a can be evaporated by multiple evaporation sources. For example, evaporation sources can be arranged on both sides of the isolation opening 400a, so that when evaporating the material of the light-emitting device layer 300, the movement directions of the material of the light-emitting device layer 300 emitted by the evaporation sources on both sides intersect, so as to more evenly evaporate the light-emitting device layer 300 in the isolation opening 400a. Or the evaporation source can be moved relative to the substrate 100, and the evaporation source can emit the material of the light-emitting device layer 300 that propagates in at least two directions. When the evaporation source is located on the right side of the isolation opening 400a, the material of the light-emitting device layer 300 emitted by the evaporation source can enter the isolation opening 400a from the right side, and when the evaporation source moves from the right side to the left side, the material of the light-emitting device layer 300 emitted by the evaporation source can enter the isolation opening 400a from the left side, thereby achieving relatively uniform evaporation of the light-emitting device layer 300 in the isolation opening 400a.

[0064] like Figure 2 As shown, taking the evaporation of the material of the light-emitting device layer 300 in an isolation opening 400a as an example, when the material of the light-emitting device layer 300 emitted by the evaporation source enters the isolation opening 400a from the right side, under the shielding of the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a, the acute angle between the first virtual connection surface a between the overlapping edge 300b and the yielding edge 421a on the left side of the isolation structure 400 facing the isolation opening 400a and the substrate 100 is the first angle i, and the first angle i can be equal to the angle between the movement direction of the material of the light-emitting device layer 300 emitted by the evaporation source into the isolation opening 400a and the surface of the substrate 100. By setting the first shielding angle k of the right isolation structure 400 to be smaller than the first angle i, when the material of the light-emitting device layer 300 enters from the right side, the blocking portion 420 of the isolation structure 400 located on the right side of the isolation opening 400a is not likely to block the material of the light-emitting device layer 300 entering from the right side into the isolation opening 400a, thereby being able to form a relatively uniform light-emitting unit 300a in the isolation opening 400a.

[0065] Similarly, when the material of the light-emitting device layer 300 emitted by the evaporation source enters the isolation opening 400a from the left side, the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a is not likely to block the material of the light-emitting device layer 300 entering the isolation opening 400a from the left side, thereby being able to form a relatively uniform light-emitting unit 300a in the isolation opening 400a.

[0066] Optionally, the first blocking angle k can be 10° to 30°, so that the blocking portion 420 is easy to manufacture and the blocking portion 420 at the yield surface 421 is not likely to produce excessive shielding on the material of the light-emitting device layer 300, so that the light-emitting unit 300a in the isolation opening 400a has better uniformity.

[0067] In some embodiments, the light-emitting unit 300a may overlap with the isolation part 410. Optionally, the isolation structure 400 may be in a mesh shape, and the number of the isolation opening 400a and the light-emitting unit 300a may be multiple. The blocking part 420 may have a clearance surface 421 on both sides facing the isolation opening 400a, and the light-emitting unit 300a overlaps with the isolation parts 410 on both sides, and the light-emitting unit 300a also has a lap edge 300b on both sides facing the isolation part 410. The first virtual connection surface a is connected between adjacent clearance edges 421a and lap edges 300b, which may refer to the first virtual connection surface a being connected between the clearance edge 421a and the lap edge 300b located on the same isolation structure 400 and facing the same side of the isolation opening 400a. Among them, the making way edge 421a can be parallel to the overlapping edge 300b, and the lines passing through and perpendicular to the adjacent making way edge 421a and the overlapping edge 300b can be located on the first virtual connection surface a, so that when the material of the light-emitting device layer 300 is evaporated, the first angle i between the first virtual connection surface a and the surface of the substrate 100 can better reflect the angle between the movement direction of the material of the light-emitting device layer 300 in the isolation opening 400a and the surface of the substrate 100.

[0068] In some optional embodiments, the display panel may further include a pixel definition layer 200 located on the side of the substrate 100 facing the isolation structure 400, the pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210, the orthographic projection of the pixel opening 220 on the substrate 100 is located within the orthographic projection of the isolation opening 400a on the substrate 100, and at least part of the light emitting unit 300a may be located within the pixel opening 220.

[0069] Optionally, there are multiple pixel openings 220 , and the multiple pixel openings 220 may be distributed at intervals. Optionally, each pixel opening 220 may be provided with a light emitting unit 300 a .

[0070] Optionally, the pixel opening 220 may be disposed corresponding to the isolation opening 400 a , that is, the orthographic projection of the pixel opening 220 on the substrate 100 may be located within the orthographic projection of the isolation opening 400 a on the substrate 100 .

[0071] Optionally, the isolation structure 400 may be disposed on the side of the pixel defining portion 210 facing away from the substrate 100, or the isolation structure 400 may be directly disposed on the substrate 100. For ease of description, the following embodiments are described by taking the isolation structure 400 being disposed on the side of the pixel defining portion 210 facing away from the substrate 100 as an example.

[0072] like Figure 2 As shown, in some optional embodiments, the light emitting unit 300a includes a light emitting structure 310 and a first electrode 320 disposed on a side of the light emitting structure 310 away from the substrate 100 , and the overlapping edge 300b is located on a side of the first electrode 320 facing the isolation portion 410 .

[0073] Optionally, the light emitting structure 310 may include a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL) and an electron transport layer (ETL).

[0074] Optionally, the display panel further includes a plurality of second electrodes 500, each second electrode 500 being arranged corresponding to each pixel opening 220, for example, each second electrode 500 is located on a side of the light emitting structure 310 in each pixel opening 220 facing the substrate 100. Optionally, the second electrode 500 interacts with the first electrode 320 to drive the light emitting structure 310 to emit light. One of the first electrode 320 and the second electrode 500 is an anode, and the other is a cathode. The embodiment of the present application is described by taking the second electrode 500 as an anode and the first electrode 320 as a cathode.

[0075] In these optional embodiments, the first electrodes 320 may be interconnected to form a surface electrode. Optionally, the light-emitting unit 300a may overlap the isolation portion 410, and the material of the isolation portion 410 may include a conductive material, so that the first electrode 320 may be interconnected to form a surface electrode with the isolation portion 410. The first virtual connection surface a is connected between the adjacent giving way edge 421a and the overlapping edge 300b, so that when the first electrode 320 is evaporated, for example, Figure 2As shown, when the material of the first electrode 320 emitted by the evaporation source enters the isolation opening 400a from the right side, under the shielding of the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a, the acute angle between the first virtual connection surface a between the overlapping edge 300b and the yield edge 421a on the left side of the isolation structure 400 facing the isolation opening 400a and the substrate 100 is the first angle i, and the first angle i can be equal to the angle between the movement direction of the material of the first electrode 320 emitted by the evaporation source into the isolation opening 400a and the surface of the substrate 100. By setting the first shielding angle k of the right isolation structure 400 to be smaller than the first included angle i, when the material of the first electrode 320 enters from the right, the blocking portion 420 of the isolation structure 400 located on the right side of the isolation opening 400a is not likely to shield the material of the first electrode 320 entering from the right into the isolation opening 400a, so that a relatively uniform first electrode 320 can be formed in the isolation opening 400a, and the uniformity of the first electrode 320 in the isolation opening 400a is improved. When the material of the first electrode 320 enters the isolation opening 400a from the left, similarly, by setting the first shielding angle k of the isolation structure 400 on the left side of the isolation opening 400a to be smaller than the first included angle i, the uniformity of the first electrode 320 in the isolation opening 400a can also be improved, which will not be described in detail here.

[0076] like Figure 2 As shown, in some optional embodiments, the isolation portion 410 has a conductive edge 410a on one side facing the isolation opening 400a, the first virtual blocking surface c is connected between the adjacent yielding edge 421a and the conductive edge 410a, the acute angle between the first virtual blocking surface c and the surface of the substrate 100 is the second blocking angle p, and the first angle i is smaller than the second blocking angle p.

[0077] Optionally, the first virtual shielding surface c is connected between the adjacent making way edges 421a and the conductive edge 410a, which may refer to the first virtual shielding surface c being connected between the making way edges 421a and the conductive edge 410a located on the same isolation structure 400 and facing the isolation opening 400a on the same side. The making way edges 421a may be parallel to the conductive edge 410a, and the lines passing through and perpendicular to the adjacent making way edges 421a and the conductive edge 410a may be located on the first virtual shielding surface c.

[0078] In these optional embodiments, by setting the first angle i to be smaller than the second shielding angle p, when the first electrode 320 is evaporated, for example, Figure 2As shown, when the material of the first electrode 320 emitted by the evaporation source enters the isolation opening 400a from the right side, the material of the first electrode 320 is not easily blocked by the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a, so that it can be overlapped with the isolation portion 410 of the isolation structure 400 on the left side of the isolation opening 400a more smoothly, so that the first electrode 320 can be interconnected to form a surface electrode through the conductive portion 410. When the material of the first electrode 320 enters the isolation opening 400a from the left side, similarly, by setting the first angle i to be smaller than the second blocking angle p, the first electrode 320 can also be overlapped with the isolation portion 410 of the isolation structure 400 on the right side of the isolation opening 400a more smoothly, which will not be described in detail here.

[0079] like Figure 2 As shown, in some optional embodiments, the light-emitting structure 310 has a sub-edge 310a on one side facing the isolation portion 410, the second virtual connection surface b is connected between the adjacent yielding edge 421a and the sub-edge 310a, the acute angle between the second virtual connection surface b and the surface of the substrate 100 is the second angle j, and the first blocking angle k is smaller than the second angle j.

[0080] The second virtual connection surface b is connected between the adjacent giving way edge 421a and the sub-edge 310a, which may refer to the second virtual connection surface b being connected between the giving way edge 421a and the sub-edge 310a located on the same isolation structure 400 and facing the isolation opening 400a on the same side. The giving way edge 421a may be parallel to the sub-edge 310a, and the connecting line passing through and perpendicular to the adjacent giving way edge 421a and the sub-edge 310a may be located on the second virtual connection surface b, so that when the material of the light-emitting structure 310 is evaporated, the second angle j between the second virtual connection surface b and the surface of the substrate 100 can better reflect the angle between the moving direction of the material of the light-emitting structure 310 in the isolation opening 400a and the surface of the substrate 100.

[0081] In these optional embodiments, when evaporating the light emitting structure 310, for example, Figure 2As shown, when the material of the light-emitting structure 310 emitted by the evaporation source enters the isolation opening 400a from the right side, under the shielding of the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a, the acute angle between the second virtual connection surface b between the sub-edge 310a and the yield edge 421a on the left side of the isolation structure 400 facing the isolation opening 400a and the substrate 100 is the second angle j, and the second angle j can be equal to the angle between the movement direction of the material of the light-emitting structure 310 emitted by the evaporation source into the isolation opening 400a and the surface of the substrate 100. By setting the first shielding angle k of the right isolation structure 400 to be smaller than the second angle j, when the material of the light-emitting structure 310 enters from the right, the blocking portion 420 of the isolation structure 400 located on the right side of the isolation opening 400a is not likely to shield the material of the light-emitting structure 310 entering from the right into the isolation opening 400a, so that a relatively uniform light-emitting structure 310 can be formed in the isolation opening 400a, and the uniformity of the light-emitting structure 310 in the isolation opening 400a is improved. When the material of the light-emitting structure 310 enters the isolation opening 400a from the left, similarly, by setting the first shielding angle k of the isolation structure 400 on the left side of the isolation opening 400a to be smaller than the second angle j, the uniformity of the light-emitting structure 310 in the isolation opening 400a can also be improved, which will not be described in detail here.

[0082] like Figure 2 As shown, in some optional embodiments, the first angle i is smaller than the second angle j, that is, the overlapping edge 300b may be located on the side of the sub-edge 310a facing the isolation portion 410, so that the first electrode 320 can be better overlapped with the isolation portion 410, so that the first electrode 320 can be interconnected through the isolation portion 410 to form a surface electrode.

[0083] In some optional embodiments, the light-emitting structure 310 may be spaced apart from the isolation portion 410 so that the light-emitting structures 310 in adjacent isolation openings 400a are not interconnected through the isolation portion 410, thereby making it difficult for the light-emitting structures 310 in adjacent isolation openings 400a to generate crosstalk through the isolation portion 410, thereby improving the display effect of the display panel.

[0084] Optionally, the second shielding angle p may be smaller than the second included angle j, so that when the light emitting structure 310 is evaporated, for example, Figure 2As shown, when the material of the light-emitting structure 310 emitted by the evaporation source enters the isolation opening 400a from the right side, the material of the light-emitting structure 310 can be easily blocked by the blocking portion 420 of the isolation structure 400 located on the left side of the isolation opening 400a, so that the light-emitting structure 310 is not easily overlapped with the isolation portion 410, so as to achieve the spacing between the light-emitting structure 310 and the isolation portion 410. When the material of the light-emitting structure 310 enters the isolation opening 400a from the left side, similarly, by setting the second blocking angle p to be smaller than the second included angle j, the light-emitting structure 310 can also be spaced from the isolation portion 410, which will not be described in detail here.

[0085] like Figure 2 As shown, optionally, the pixel defining portion 210 has an enclosing surface 211 on the side facing the pixel opening 220, and the enclosing surface 211 has an enclosing edge 211a on the side facing away from the isolation structure 400, and the second virtual blocking surface d is connected between the adjacent enclosing edge 211a and the yielding edge 421a, and the acute angle between the second virtual blocking surface d and the surface of the substrate 100 is a third blocking angle q, and the third blocking angle q is smaller than the first angle i.

[0086] Optionally, the pixel opening 220 may be formed by enclosing the enclosing surface 211. Optionally, the orthographic projection of the isolation structure 400 on the substrate 100 is located within the orthographic projection of the pixel defining portion 210 on the substrate 100, and the enclosing edge 211a may be located on the side of the yielding edge 421a away from the isolation portion 410, so that the material of the light-emitting unit 300a can be less easily blocked by the blocking portion 420 and fall into the pixel opening 220 more smoothly, thereby better covering the second electrode 500 in the pixel opening 220.

[0087] Optionally, the second virtual shielding surface d is connected between the adjacent giving way edge 421a and the enclosing edge 211a, which may refer to the second virtual shielding surface d being connected between the giving way edge 421a and the enclosing edge 211a located on the same isolation structure 400 and facing the isolation opening 400a on the same side. The giving way edge 421a may be parallel to the enclosing edge 211a, and the line passing through and perpendicular to the adjacent giving way edge 421a and the enclosing edge 211a may be located on the second virtual shielding surface d.

[0088] In these optional embodiments, by setting the third shielding angle q to be smaller than the first angle i, when evaporating the light emitting structure 310 and the first electrode 310, for example, Figure 2As shown, when the material of the light-emitting structure 310 and the first electrode 310 emitted by the evaporation source enters the isolation opening 400a from the right side, the material of the light-emitting structure 310 and the first electrode 310 is not easily blocked by the blocking portion 420 on the right side, and can be well filled in the pixel opening 220, and even part of the material of the light-emitting structure 310 can cover the pixel defining portion 210 outside the pixel opening 220, so that the light-emitting structure 310 in the isolation opening 400a can have a good area, thereby improving the display effect of the display panel. When the material of the light-emitting structure 310 enters the isolation opening 400a from the left side, similarly, by setting the third blocking angle q to be smaller than the first angle i, the material of the light-emitting structure 310 and the first electrode 310 can also be well filled in the pixel opening 220, and even part of the material of the light-emitting structure 310 can cover the pixel defining portion 210 outside the pixel opening 220, which will not be described in detail here.

[0089] In some optional embodiments, the acute angle between the enclosed surface 211 and the surface of the substrate 100 is a fourth blocking angle r, and the fourth blocking angle r is smaller than the first angle i, so that when the light emitting structure 310 and the first electrode 310 are evaporated, for example, Figure 2 As shown, when the material of the light-emitting structure 310 and the first electrode 310 emitted by the evaporation source enters the isolation opening 400a from the right side, the material of the light-emitting structure 310 and the first electrode 310 is not easily blocked by the pixel defining portion 210 on the right side, and can be well filled in the pixel opening 220, so that the light-emitting structure 310 in the isolation opening 400a can have a good area, thereby improving the display effect of the display panel. When the material of the light-emitting structure 310 enters the isolation opening 400a from the left side, similarly, by setting the fourth blocking angle r to be smaller than the first angle i, the material of the light-emitting structure 310 and the first electrode 310 can also be well filled in the pixel opening 220, which will not be described in detail here.

[0090] In some optional embodiments, the cross-sectional area of ​​the isolation portion 410 gradually decreases in the direction away from the substrate 100, so that the isolation portion 410 has a smaller size at one end facing the blocking portion 420, so that the concave degree of the concave structure formed between the blocking portion 420 and the isolation portion 410 is better, so that when the light-emitting device layer 300 is evaporated, the isolation structure 400 can better isolate the light-emitting device layer 300 to form a plurality of spaced light-emitting units 300a.

[0091] Optionally, the isolation portion 410 has a conductive surface 411 on the side facing the isolation opening 400a, and in the direction away from the substrate 100, the conductive surface 411 is inclined toward the side away from the isolation opening 400a, so that the conductive surface 411 on the side of the isolation portion 410 facing the substrate 100 can easily overlap with the first electrode 320, thereby facilitating the first electrode 320 to be interconnected as a surface electrode through the isolation portion 410.

[0092] The embodiment of the second aspect of the present application further provides a display device, including the display panel of any of the above-mentioned embodiments of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel of any of the above-mentioned embodiments of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments of the first aspect, which will not be repeated here.

[0093] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0094] Figure 3 is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application, Figures 4 to 6 It is a schematic diagram of a method for preparing a display panel provided in another embodiment of the present application.

[0095] like Figure 3 Combined with Figure 1 and Figure 2 As shown, an embodiment of the third aspect of the present application further provides a method for preparing a display panel, and the display panel may be a display panel provided by any of the embodiments of the first aspect above, and the preparation method includes:

[0096] Step S01: Figure 4 As shown, an isolation structure 400 is formed on the substrate 100, and the isolation structure 400 encloses an isolation opening 400a. The isolation structure 400 includes an isolation portion 410 and a blocking portion 420 located on the side of the isolation portion 410 away from the substrate 100. The blocking portion 420 has a yield surface 421 on the side facing the isolation opening 400a. In the direction away from the substrate 100, the yield surface 421 is inclined toward the side away from the isolation opening 400a, and the yield surface 421 has a yield edge 421a on the side facing the isolation opening 400a. The acute angle between the yield surface 421 and the surface of the substrate 100 is a first blocking angle k.

[0097] In some embodiments, the barrier portion material may be etched to form a barrier portion 420 having a clearance surface 421, so that the clearance surface 421 of the barrier portion 420 is inclined in a direction away from the substrate 100 and toward a side away from the isolation opening 400a, and the acute angle between the clearance surface and the surface of the substrate 100 is a first blocking angle k.

[0098] There are various ways to etch the barrier portion 420 . Optionally, the barrier portion material may be etched by wet etching to form the barrier portion 420 .

[0099] Step S02: Figure 5 and Figure 6 As shown, a light-emitting device material is evaporated in the isolation opening 400a to form a light-emitting device layer 300, and the light-emitting device layer 300 includes a light-emitting unit 300a arranged in the isolation opening 400a, wherein when the light-emitting device material is evaporated, the minimum acute angle between the movement direction of the light-emitting device material located in the isolation opening 400a and the substrate 100 is the first angle i, and the first blocking angle k is smaller than the first angle i.

[0100] A display panel is prepared using an embodiment of the present application, and the display panel includes a substrate 100, an isolation structure 400 and a light-emitting device layer 300. The isolation structure 400 is arranged on one side of the substrate 100 and encloses an isolation opening 400a. The light-emitting unit 300a of the light-emitting device layer 300 can be arranged in the isolation opening 400a to realize the light-emitting display of the display panel.

[0101] The isolation structure 400 includes an isolation portion 410 and a blocking portion 420 located on the side of the isolation portion 410 away from the substrate 100. The orthographic projection of the isolation portion 410 on the substrate 100 is located within the orthographic projection of the blocking portion 420 on the substrate 100. Therefore, a concave structure is formed under the blocking portion 420, so that when the light-emitting device layer 300 is evaporated, the blocking portion 420 can block at least part of the material used to prepare the light-emitting device layer 300 in the thickness direction Z of the display panel, so that the light-emitting device layer 300 can be disconnected at the isolation structure 400, thereby forming a plurality of light-emitting units 300a arranged at intervals. Therefore, when evaporating the light-emitting device layer 300, there is no need to set a mask with high precision, for example, when evaporating the light-emitting device layer 300, there is no need to set a high-precision metal mask (Fine Metal Mask, FMM), thereby reducing the production cost of the display panel.

[0102] The blocking portion 420 has a yield surface 421 on the side facing the isolation opening 400a, and the yield surface 421 has a yield edge 421a on the side facing the isolation opening 400a. Optionally, the light-emitting unit 300a can overlap with the isolation portion 410, and the light-emitting unit 300a has an overlapping edge 300b on the side facing the isolation portion 410. The first virtual connection surface a is connected between the adjacent yield edge 421a and the overlapping edge 300b. Since the minimum acute angle between the movement direction of the light-emitting device material located in the isolation opening 400a and the substrate 100 is the first angle i, the acute angle between the first virtual connection surface a and the surface of the substrate 100 is also the first angle i. By arranging the clearance surface 421 in a direction away from the substrate 100 and tilting toward the side away from the isolation opening 400a, so that the acute angle between the clearance surface 421 and the surface of the substrate 100 is the first blocking angle k, and the first blocking angle k is set to be smaller than the first included angle i, the blocking portion 420 at the clearance surface 421 is not likely to produce excessive shielding for the light-emitting device material entering the isolation opening 400a at a certain angle, so that the light-emitting device material entering the isolation opening 400a is not easily blocked by the blocking portion 420, and can be more evenly located in the isolation opening 400a, so as to form a light-emitting unit 300a with a more uniform thickness, that is, the evaporation uniformity of the light-emitting unit 300a in the display panel is improved.

[0103] In some optional embodiments, step S02 further includes:

[0104] like Figure 5 and Figure 6 As shown, the light-emitting device material includes a first electrode material, and the first electrode material is evaporated in the isolation opening 400a to form a first electrode 320 arranged in the isolation opening 400a, wherein when the first electrode material is evaporated, the minimum acute angle between the movement direction of the first electrode material located in the isolation opening 400a and the substrate 100 is the first angle i.

[0105] Optionally, the first electrode 320 may overlap with the isolation portion 410 , and the material of the isolation portion 410 may include a conductive material, so that the first electrodes 320 in adjacent isolation openings 400 a may be interconnected through the isolation portion 410 to form a surface electrode.

[0106] In these optional embodiments, by setting the minimum acute angle between the movement direction of the first electrode material in the isolation opening 400a and the substrate 100 to be the first angle i, the blocking portion 420 at the yield surface 421 is not likely to produce excessive obstruction to the first electrode material entering the isolation opening 400a at a certain angle, so that the first electrode material entering the isolation opening 400a is not easily obstructed by the blocking portion 420, and can be more evenly located in the isolation opening 400a to form a first electrode 320 with a more uniform thickness, thereby improving the uniformity of the evaporation of the first electrode 320 in the display panel.

[0107] In some optional embodiments, step S02 further includes:

[0108] like Figure 5 and Figure 6 As shown, the light emitting device material also includes a light emitting structure material. The light emitting structure material and the first electrode material are sequentially evaporated in the isolation opening 400a to form a light emitting structure material disposed in the isolation opening.

[0109] The light-emitting structure 310 in 400a and the first electrode 320 located on the side of the light-emitting structure 310 facing away from the substrate 100, wherein, when evaporating the light-emitting structure material, the minimum acute angle between the movement direction of the light-emitting structure material in the isolation opening 400a and the substrate 100 is the second angle j, and the first blocking angle k is smaller than the second angle j.

[0110] Optionally, the light emitting structure 310 may be spaced apart from the isolation portion 410 .

[0111] In these optional embodiments, by setting the minimum acute angle between the movement direction of the light-emitting structure material in the isolation opening 400a and the substrate 100 to be the second angle j, and the first blocking angle k is smaller than the second angle j, the blocking portion 420 at the yield surface 421 is not likely to produce excessive shielding for the light-emitting structure material entering the isolation opening 400a at a certain angle, so that the light-emitting structure material entering the isolation opening 400a is not easily blocked by the blocking portion 420, and can be more evenly located in the isolation opening 400a to form a light-emitting structure 310 with a more uniform thickness, thereby improving the evaporation uniformity of the light-emitting structure 310 in the display panel.

[0112] In some optional embodiments, the first angle i is smaller than the second angle j, so that the end of the first electrode 320 facing the isolation portion 410 can be closer to the isolation portion 410 than the end of the light-emitting structure 310 facing the isolation portion 410, so as to facilitate the overlap between the first electrode 320 and the isolation portion 410, thereby facilitating the first electrode 320 to be interconnected as a surface electrode through the isolation portion 410.

[0113] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is arranged on one side of the substrate and encloses an isolation opening, the isolation structure comprising an isolation portion and a barrier portion located on a side of the isolation portion away from the substrate, the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the barrier portion on the substrate, the barrier portion has a yield surface on a side facing the isolation opening, the yield surface is inclined toward the side away from the isolation opening in a direction away from the substrate, and the yield surface has a yield edge on a side facing the isolation opening; The light emitting device layer comprises a light emitting unit arranged in the isolation opening, wherein the light emitting unit has an overlapping edge on a side facing the isolation portion, Among them, the acute angle between the give-way surface and the substrate surface is a first blocking angle, the first virtual connection surface is connected between the adjacent give-way edges and the overlapping edges, the acute angle between the first virtual connection surface and the substrate surface is a first included angle, and the first blocking angle is smaller than the first included angle.

2. The display panel according to claim 1, characterized in that: The light-emitting unit comprises a light-emitting structure and a first electrode disposed on a side of the light-emitting structure away from the substrate, and the overlapping edge is located on a side of the first electrode facing the isolation portion; Preferably, the first electrode overlaps the isolation portion, and the material of the isolation portion includes a conductive material; Preferably, the isolation portion has a conductive edge on the side facing the isolation opening, a first virtual blocking surface is connected between the adjacent yielding edge and the conductive edge, the acute angle between the first virtual blocking surface and the substrate surface is the second blocking angle, and the first angle is smaller than the second blocking angle.

3. The display panel according to claim 2, characterized in that: The light emitting structure has a sub-edge on one side facing the isolation portion, a second virtual connection surface is connected between the adjacent yielding edge and the sub-edge, an acute angle between the second virtual connection surface and the substrate surface is a second angle, and the first shielding angle is smaller than the second angle.

4. The display panel according to claim 3, characterized in that: The first angle is smaller than the second angle.

5. The display panel according to claim 3, characterized in that: The light emitting structure is spaced apart from the isolation portion; Preferably, the second shielding angle is smaller than the second included angle.

6. The display panel according to any one of claims 1 to 5, characterized in that: In a direction away from the substrate, the cross-sectional area of ​​the isolation portion gradually decreases; Preferably, the isolation portion has a conductive surface on a side facing the isolation opening, and in a direction away from the substrate, the conductive surface is inclined toward a side away from the isolation opening.

7. The display panel according to any one of claims 1 to 5, characterized in that: The display panel further comprises a pixel definition layer located on a side of the substrate facing the isolation structure, the pixel definition layer comprising a pixel definition portion and a pixel opening formed by the pixel definition portion, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate, and the light emitting unit is located within the pixel opening; Preferably, the isolation structure is arranged on a side of the pixel defining portion away from the substrate; Preferably, the pixel defining portion has an enclosing surface on a side facing the pixel opening, and the enclosing surface has an enclosing edge on a side facing away from the isolation structure, a second virtual shielding surface is connected between the adjacent enclosing edge and the yielding edge, and an acute angle between the second virtual shielding surface and the substrate surface is a third shielding angle, and the third shielding angle is smaller than the first angle; Preferably, the acute angle between the enclosed surface and the substrate surface is a fourth blocking angle, and the fourth blocking angle is smaller than the first angle.

8. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 7.

9. A method for preparing a display panel, characterized in that: include: An isolation structure is formed on the substrate, the isolation structure encloses an isolation opening, the isolation structure comprises an isolation portion and a blocking portion located on a side of the isolation portion away from the substrate, the blocking portion has a yielding surface on a side facing the isolation opening, the yielding surface is inclined toward the side away from the isolation opening in a direction away from the substrate, and the yielding surface has a yielding edge on a side facing the isolation opening, and the acute angle between the yielding surface and the surface of the substrate is a first shielding angle; A light-emitting device material is evaporated in the isolation opening to form a light-emitting device layer, wherein the light-emitting device layer includes a light-emitting unit arranged in the isolation opening, wherein when the light-emitting device material is evaporated, the minimum acute angle between the moving direction of the light-emitting device material in the isolation opening and the substrate is a first angle, and the first blocking angle is smaller than the first angle.

10. The method according to claim 9, characterized in that A light-emitting device material is evaporated in the isolation opening to form a light-emitting device layer, wherein the light-emitting device layer includes a light-emitting unit arranged in the isolation opening, wherein when the light-emitting device material is evaporated, the minimum acute angle between the moving direction of the light-emitting device material in the isolation opening and the substrate is a first angle, and the step of the first blocking angle being less than the first angle further includes: The light-emitting device material includes a first electrode material, and the first electrode material is evaporated in the isolation opening to form a first electrode disposed in the isolation opening, wherein when the first electrode material is evaporated, the minimum acute angle between the moving direction of the first electrode material in the isolation opening and the substrate is a first angle; Preferably, the first electrode overlaps the isolation portion, and the material of the isolation portion includes a conductive material; Preferably, the light-emitting device material further comprises a light-emitting structure material, and the light-emitting structure material and the first electrode material are sequentially vapor-deposited in the isolation opening to form a light-emitting structure disposed in the isolation opening and the first electrode located on a side of the light-emitting structure away from the substrate, wherein when the light-emitting structure material is vapor-deposited, the minimum acute angle between the moving direction of the light-emitting structure material located in the isolation opening and the substrate is the second angle, and the first blocking angle is smaller than the second angle; Preferably, the first angle is smaller than the second angle.

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