Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel and a preparation method thereof and a display device, the display panel comprises a substrate, a plurality of first scanning lines, an isolation structure and a plurality of light-emitting function units, the plurality of first scanning lines are located at one side of the substrate, and the plurality of first scanning lines are arranged along a first direction; the isolation structure is formed on one side of the substrate, an opening part is defined by the isolation structure, the isolation structure comprises a first isolation part, the first isolation part comprises a side face facing one side of the opening part, the side face comprises a first surface, the plane where the first surface is located intersects with the plane where the substrate is located to form a first intersecting line, and a first preset angle is formed between the first intersecting line and the first direction; the light-emitting function units are arranged on the substrate and correspond to the opening parts, and each light-emitting function unit comprises a first electrode, a light-emitting function layer and a second electrode; wherein the second electrode is in contact with the isolation structure, and the first preset angle is larger than or equal to 0 degree and smaller than 45 degrees. According to the display panel provided by the invention, the display quality of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is also called organic electric laser display or organic light-emitting semiconductor. OLED has many characteristics such as low driving voltage, active light emission, wide viewing angle, high efficiency, fast response speed, easy to realize full-color large-area wall-mounted display and flexible display, and gradually replaces Liquid Crystal Display (LCD) display.

[0003] With the development of display technology, the performance requirements for display devices are getting higher and higher. In display devices of related technologies, the performance of display panels is difficult to meet user needs. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a method for manufacturing the same, and a display device, which can improve the display quality of the display panel.

[0005] An embodiment of a first aspect of the embodiments of the present application provides a display panel, including:

[0006] substrate,

[0007] A plurality of first scanning lines are located on one side of the substrate, and the plurality of first scanning lines are arranged along a first direction;

[0008] An isolation structure is formed on one side of the substrate, and the isolation structure encloses an opening portion, the isolation structure includes a first isolation portion, the first isolation portion includes a side facing the side of the opening portion, the side includes a first surface, the plane where the first surface is located intersects with the plane where the substrate is located and forms a first intersection line, and the first intersection line forms a first preset angle with the first direction;

[0009] A plurality of light-emitting functional units, wherein the light-emitting functional units are arranged on the substrate and corresponding to the openings, and the light-emitting functional units include a first electrode, a light-emitting functional layer, and a second electrode;

[0010] Wherein, the second electrode contacts the isolation structure, and the first preset angle is greater than or equal to 0° and less than 45°.

[0011] According to an embodiment of the first aspect of the present invention, the first preset angle is greater than or equal to 0° and less than 15°;

[0012] Preferably, the first intersection line is parallel to the first direction.

[0013] According to any of the aforementioned embodiments of the first aspect of the present invention, the first isolation portion includes a top surface and a bottom surface parallel to the substrate, the top surface is located on the side of the bottom surface away from the substrate, and the first surface is connected to the bottom surface.

[0014] According to any of the aforementioned embodiments of the first aspect of the present invention, the edge of the orthographic projection pattern of the first isolation portion on the substrate is serrated;

[0015] Preferably, the first isolation portion includes a first cross section, the first cross section is perpendicular to the substrate, and the shape of the first cross section is a regular trapezoid.

[0016] According to any of the aforementioned embodiments of the first aspect of the present invention, the edge of the orthographic projection pattern of the first isolation portion on the substrate is serrated;

[0017] Preferably, the first isolation portion includes a first cross section, the first cross section is perpendicular to the substrate, and the shape of the first cross section is a regular trapezoid.

[0018] According to any of the aforementioned embodiments of the first aspect of the present invention, the side surface further includes a second surface, the second surface and the first surface are alternately arranged along a direction around the center of the opening, the second surface is connected to the first surface, the plane where the second surface is located intersects with the plane where the substrate is located and forms a second intersection line, the second intersection line is at a second preset angle with the first direction, and the second preset angle is greater than 45° and less than or equal to 90°;

[0019] Preferably, the second preset angle is equal to 90°;

[0020] Preferably, the first isolation portion includes a top surface and a bottom surface parallel to the substrate, the top surface is located on the side of the bottom surface away from the substrate, and the length of the intersection line between the second surface and the bottom surface is shorter than the length of the intersection line between the first surface and the bottom surface;

[0021] Preferably, in the opening, an orthographic projection of an end of an intersection line of the first surface and the second surface close to the substrate on the substrate is located on a first virtual quadrilateral or a virtual circle, and a side of the first virtual quadrilateral forms a first angle with the first direction, and the degree of the first angle is greater than 0° and less than 90°;

[0022] Preferably, the first virtual quadrilateral is a rectangle, and the first angle is 45°.

[0023] According to any of the aforementioned embodiments of the first aspect of the present invention, the plurality of light-emitting functional units include a plurality of first light-emitting functional units, a plurality of second light-emitting functional units and a plurality of third light-emitting functional units, wherein each of the first light-emitting functional units is located inside a second virtual quadrilateral, two opposite vertices in each of the second virtual quadrilaterals coincide with the center of the second light-emitting functional unit, and the other two opposite vertices coincide with the center of the third light-emitting functional unit, and the ratio of the number of the first light-emitting functional units, the second light-emitting functional units and the third light-emitting functional units is 2:1:1.

[0024] According to any of the aforementioned embodiments of the first aspect of the present invention, the isolation structure further comprises a second isolation portion, the second isolation portion is located on a side of the first isolation portion away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0025] Preferably, the edge of the orthographic projection pattern of the second isolation portion on the substrate is serrated.

[0026] According to any of the aforementioned embodiments of the first aspect of the present invention, it further includes a pixel definition layer, the pixel definition layer is located on one side of the substrate, the pixel definition layer includes a pixel definition portion and a first opening defined by the pixel definition portion, and at least part of the light-emitting functional layer is disposed in the first opening;

[0027] Preferably, the isolation structure is located on a side of the pixel defining portion away from the substrate;

[0028] Preferably, a groove is provided on a side of the pixel defining portion facing away from the substrate, and the isolation structure is located in the groove;

[0029] Preferably, the pixel defining portion includes a second opening, and the isolation structure is located in the second opening.

[0030] According to any of the aforementioned embodiments of the first aspect of the present invention, the side surface further includes a second surface, the second surface and the first surface are alternately arranged in a direction around the center of the opening, and the second surface is connected to the first surface;

[0031] In the opening, the orthographic projection of one end of the intersection line of the first surface and the second surface close to the substrate on the substrate is located on a virtual circle, and the orthographic projection figure of the first opening on the substrate includes a circle, and the center of the circle coincides with the center of the virtual circle; or

[0032] In the opening portion, the orthographic projection of one end of the intersection of the first surface and the second surface close to the substrate on the substrate is located on a first virtual quadrilateral, and the orthographic projection figure of the first opening on the substrate includes a quadrilateral, the center of the quadrilateral coincides with the center of the first virtual quadrilateral, one diagonal line of the quadrilateral is collinear with one diagonal line of the first virtual quadrilateral, and another diagonal line of the quadrilateral is collinear with another diagonal line of the first virtual quadrilateral, and a second angle is formed between the quadrilateral and the opposite sides of the first virtual quadrilateral, and the degree of the second angle is greater than or equal to 0° and less than 15°.

[0033] The embodiment of the second aspect of the present application further provides a display panel, including:

[0034] substrate,

[0035] An isolation structure is formed on one side of the substrate, and the isolation structure encloses an opening;

[0036] A plurality of light-emitting functional units, wherein the light-emitting functional units are arranged on the substrate and corresponding to the openings, and the light-emitting functional units include a first electrode, a light-emitting functional layer, and a second electrode;

[0037] The second electrode is in contact with the isolation structure, and the edge of the orthographic projection pattern of the isolation structure on the substrate is serrated.

[0038] According to an embodiment of the second aspect of the present invention, it further includes a pixel definition layer, the pixel definition layer is located on one side of the substrate, the pixel definition layer includes a pixel definition portion and a first opening defined by the pixel definition portion, and at least part of the light-emitting functional layer is disposed in the first opening;

[0039] The serrated protruding end of the edge of the orthographic projection of the isolation structure on the substrate close to the center of the opening is located on a virtual circle, the orthographic projection of the first opening on the substrate includes a circle, and the circle coincides with the center of the virtual circle; or

[0040] The jagged protruding end of the edge of the orthographic projection figure of the isolation structure on the substrate, which is close to the center of the opening, is located on the first virtual quadrilateral. The orthographic projection figure of the first opening on the substrate includes a quadrilateral. The center of the quadrilateral coincides with that of the first virtual quadrilateral. One diagonal of the quadrilateral is collinear with one diagonal of the first virtual quadrilateral, and another diagonal of the quadrilateral is collinear with another diagonal of the first virtual quadrilateral. A second angle is formed between the quadrilateral and the opposite sides of the first virtual quadrilateral, and the degree of the second angle is greater than or equal to 0° and less than 15°.

[0041] An embodiment of the third aspect of the present application further provides a display device, comprising any one of the display panels provided by the first aspect or the second aspect of the present application.

[0042] The fourth aspect of the present application also provides a method for preparing a display panel, including:

[0043] Providing a substrate,

[0044] An isolation structure is formed on one side of the substrate, the isolation structure encloses an opening, the isolation structure includes a first isolation portion, the first isolation portion includes a side facing the opening, the side includes a first surface, a plane where the first surface is located intersects with a plane where the substrate is located and forms a first intersection line, the first intersection line forms a first preset angle with the first direction, and the first preset angle is greater than or equal to 0° and less than 45°;

[0045] A plurality of light-emitting functional units are formed on the substrate, and the light-emitting functional units are arranged corresponding to the openings, including: forming a first electrode on the substrate; forming a light-emitting functional layer on a side of the first electrode away from the substrate; forming a second electrode on a side of the light-emitting functional layer away from the substrate, including: providing an evaporation source, the evaporation source comprising a plurality of evaporation holes, and the evaporation holes are arranged along a third direction; setting the positional relationship between the evaporation source and the substrate such that the evaporation source is located on a side of the isolation structure away from the substrate, and the third direction is parallel to the first direction.

[0046] According to an implementation of the fourth aspect of the present invention, the first preset angle is 0°;

[0047] Preferably, the side surface further includes a second surface, the second surface and the first surface are alternately arranged along a direction around the center of the opening, the second surface is connected to the first surface, the plane where the second surface is located intersects with the plane where the substrate is located and forms a second intersection line, the second intersection line forms a second preset angle with the first direction, and the second preset angle is greater than 45° and less than or equal to 90°;

[0048] Preferably, the length of the intersection line between the second surface and the bottom surface is smaller than the length of the intersection line between the first surface and the bottom surface;

[0049] Preferably, the edge of the orthographic projection pattern of the first isolation portion on the substrate is serrated;

[0050] Preferably, the method further comprises moving the evaporation source along a preset direction so that the evaporation material evaporated from the evaporation holes is formed on the first surface to form the second electrode, and the second electrode is in contact with the first surface, wherein the preset direction is parallel to the plane where the substrate is located and perpendicular to the first direction;

[0051] Preferably, the method further comprises forming a plurality of first scanning lines on one side of the substrate, wherein the plurality of first scanning lines are arranged along a first direction.

[0052] The display panel provided in the present application includes a substrate, a plurality of first scan lines, an isolation structure and a plurality of light-emitting functional units. A plurality of first scan lines are formed on one side of the substrate, and the plurality of first scan lines are arranged along a first direction to realize scanning of the driving circuit corresponding to the light-emitting functional unit. The isolation structure is formed on one side of the substrate, and the isolation structure encloses an opening portion, and the light-emitting functional unit is formed in the opening portion, and the light-emitting functional unit includes a first electrode, a light-emitting functional layer and a second electrode stacked in a direction away from the substrate. The isolation structure includes a first isolation portion, and the first isolation portion includes a side facing one side of the opening portion, and the side includes a first surface, and the side may also include other surfaces intersecting with the first surface, which is not specifically limited in the present application. The plane where the first surface is located intersects with the plane where the substrate is located and forms a first intersection line. Specifically, the first intersection line may be an edge line of the first surface close to one end of the substrate. During the preparation process, the arrangement direction of each evaporation hole on the evaporation source for evaporating the second electrode is usually parallel to the first direction. In the display panel provided by the present application, the first intersection line is at a first preset angle with the first direction. The first preset angle is set to be greater than or equal to ° and less than °, so that the evaporation material emitted from the evaporation holes arranged in parallel to the first direction in the evaporation source can be evenly distributed on the first surface. Specifically, the "even" refers to the strong consistency of the thickness distribution along the first intersection line in the first surface, thereby improving the uniformity of the thickness distribution of the contact part between the second electrode formed by the evaporation material and the first surface, so that the resistance uniformity of each region of the second electrode arranged along the first intersection line is stronger. At the same time, the actual evaporation angle is larger, thereby increasing the height of the second electrode on the first surface, increasing the overlap area between the isolation structure and the second electrode, so that the brightness uniformity of each part of the light-emitting functional unit is enhanced, the resistance is reduced, and the overlap stability is improved, which helps to improve the display quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 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.

[0054] Figure 1 It is a schematic diagram of an evaporation process in the related art;

[0055] Figure 2 It is a structural schematic diagram of a side surface of an isolation structure in the related art;

[0056] Figure 3 yes Figure 1 A top view of

[0057] Figure 4 yes Figure 3 A partial schematic diagram of

[0058] Figure 5 yes Figure 3 A schematic cross-sectional view along the N-N' line;

[0059] Figure 6 It is a structural schematic diagram of a side surface of an isolation structure in the related art;

[0060] Figure 7 is a top view of a display panel provided by the present application;

[0061] Figure 8 yes Figure 7 Top view of the middle Q area;

[0062] Fig. 9 yes Figure 7 Enlarged view of the middle Q region;

[0063] Fig.10 yes Figure 7 Sectional view along P-P';

[0064] Fig.11 is a schematic diagram of a display panel provided by the present application during the preparation process;

[0065] Fig.12 yes Figure 7 Another top view of the middle Q area;

[0066] Fig.13 yes Figure 7 Another top view of the middle Q area;

[0067] Fig.14 yes Figure 7 Another top view of the middle Q area;

[0068] Fig.15 yes Figure 7 Another cross-sectional view along the P-P' line;

[0069] Fig.16 yes Figure 7 Another cross-sectional view along the P-P' line;

[0070] Fig.17 yes Figure 7 Another top view of the middle Q area;

[0071] Fig.18 yes Figure 7 Another top view of the middle Q area;

[0072] Fig.19 is a structural schematic diagram of a display device provided by the present application;

[0073] Fig. 20 This is a flow chart of a method for preparing a display panel provided in this application.

[0074] In the attached figure:

[0075] 1-display panel; 11-substrate; 110-driving circuit layer; 111-first scanning line; 12-light-emitting layer; 121-light-emitting functional unit; 1211-first electrode; 1212-light-emitting functional layer; 1213-second electrode; 1214-first part; 1215-second part; 1216-first light-emitting functional unit; 1217-second light-emitting functional unit; 1218-third light-emitting functional unit; 13-isolation structure; 131-opening; 132-first isolation part; 1320-first surface; 1321-top surface; 1322- Bottom surface; 1323-side surface; 1325-first intersection line; 1324-first cross section; 1326-second surface; 1327-second intersection line; α2-second preset angle; 133-second isolation portion; 14-first virtual quadrilateral; x-first direction; c1-first angle; 2-evaporation source; y-second direction; m-preset direction; 17-pixel definition layer; 171-pixel defining portion; 172-first opening; 173-groove; 174-second opening; 175-quadrilateral; 176-circle; 18-second virtual quadrilateral; 3-display device. DETAILED DESCRIPTION

[0076] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] The inventor has discovered through research that the display panel includes a substrate, a light-emitting functional unit and an isolation structure 13'. The isolation structure 13' encloses an opening portion, and the opening portion is used to accommodate the light-emitting functional unit. The light-emitting functional unit is located on one side of the substrate, and includes a first electrode, a light-emitting functional layer, and a second electrode 1213' stacked in a direction away from the substrate. The second electrodes 1213' of adjacent light-emitting functional units are electrically connected through the isolation structure 13'. The second electrode 1213' is prepared by an evaporation process. The evaporation source 2' includes a plurality of evaporation holes, and the plurality of evaporation holes are arranged along a first direction x'. During the evaporation process, the evaporation source 2' moves along a preset direction, wherein the preset direction is parallel to the plane where the display panel is located and perpendicular to the first direction x'. As Figure 1 As shown, when the orthographic projection of the opening on the substrate is a rectangular ring structure, the opening includes four side walls 1323' facing the inside of the opening, and the intersection line L1 formed by the plane where the side wall 1323' is located and the plane where the substrate is located is not parallel to the first direction x', that is, intersecting, as shown in Figure 2 As shown in FIG. 1 , the thickness distribution of the evaporation material in each area arranged along the intersection line L1 in the side wall 1323 ′ is less uniform. Figure 3 and Figure 4 As shown, the actual evaporation angle of the evaporation source ( Figure 4 Where S' represents the edge of the actual maximum distribution range of the evaporation material, and the actual evaporation angle is related to S') will be larger than the original evaporation angle θ ( Figure 3 Where S represents the edge of the original maximum distribution range of the evaporation material, and the original evaporation angle is related to S). The original evaporation angle θ refers to the angle between the two maximum evaporation paths on the cross section perpendicular to the first direction x', and the actual evaporation angle of the evaporation source refers to the angle between the two maximum evaporation paths in the direction perpendicular to the plane where L1 is located. Figure 4 As shown, Figure 4FIG. 1 shows half of the evaporation angle θ and half of the actual evaporation angle θ', namely β and β', wherein when the first direction x' forms an angle γ with the intersection line L1, it can be obtained by Figure 4 It is concluded that: tanβ' / tanβ=cosγ·, that is, the actual evaporation angle 2β' is smaller than the original evaporation angle 2β of the evaporation source, so Figure 5 As shown, the height of the second electrode on the side wall 1323' is small. Figure 6 As shown, when the intersection line L1 is parallel to the first direction x', when the evaporation source 2' moves parallel to the plane where the display panel is located and perpendicular to the first direction, it is possible to form an evaporation material with a high height and a relatively uniform thickness on the two opposite side walls 1323', thereby forming a second electrode 1213' with a large overlap area with the isolation structure 13' and a relatively uniform thickness. However, in order to achieve a good display effect, the existing display panel needs to design the shape and arrangement of pixels, and the position of the evaporation source 2' is fixed, which is inconvenient to adjust and the adjustment cost is high, so that the intersection line L1 in the display panel is not parallel to the first direction x', that is, it intersects, thereby forming a second electrode 1213' with a low height distribution and uneven thickness on the side wall 1323', which affects the resistance and power consumption of the display panel and the display quality of the display panel. Based on the research on the above problems, the inventor provides a display panel and a preparation method thereof, and a display device to reduce the resistance of the display panel, thereby reducing the power consumption of the display panel, and improving the display quality of the display panel.

[0079] In order to better understand this application, Figures 7 to 12 The display panel and the display device according to the embodiments of the present application are described in detail.

[0080] See also Figures 7 to 10 The embodiment of the present application provides a display panel 1, comprising a substrate 11, a plurality of first scan lines 111, an isolation structure 13 and a plurality of light-emitting functional units 121. The plurality of first scan lines 111 are located on one side of the substrate 11, and the plurality of first scan lines 111 are arranged along a first direction x. The isolation structure 13 is formed on one side of the substrate 11, and the isolation structure 13 encloses an opening 131, and the isolation structure 13 comprises a first isolation portion 132, the first isolation portion 132 comprises a side surface 1323 facing the side of the opening 131, the side surface 1323 comprises a first surface 1320, the plane where the first surface 1320 is located intersects with the plane where the substrate 11 is located and forms a first intersection line 1325, and the first intersection line 1325 is at a first preset angle with the first direction x. A plurality of light-emitting functional units 121, the light-emitting functional units 121 are arranged on the substrate 11 and corresponding to the opening 131, and the light-emitting functional units 121 comprise a first electrode 1211, a light-emitting functional layer 1212 and a second electrode 1213. The second electrode 1213 contacts the isolation structure 13 , and the first preset angle is greater than or equal to 0° and less than 45°.

[0081] Specifically, a driving circuit layer 110 may be formed on one side of the substrate 11 , and the first scanning line 111 is formed in the driving circuit layer 110 .

[0082] Specifically, the second electrode may contact the first surface 1320 in the isolation structure 13. The display panel 1 provided in the present application includes a substrate 11, a plurality of first scan lines 111 structure 13 and a plurality of light-emitting functional units 121. The plurality of first scan lines 111 are formed on one side of the substrate 11, and the plurality of first scan lines 111 are arranged along a first direction x to scan the drive circuit corresponding to the light-emitting functional unit 121. The isolation structure 13 is formed on one side of the substrate 11, and the isolation structure 13 encloses an opening 131, and the light-emitting functional unit 121 is formed in the opening 131, and the light-emitting functional unit 121 includes a first electrode 1211, a light-emitting functional layer 1212 and a second electrode 1213 stacked in a direction away from the substrate 11. The isolation structure 13 includes a first isolation portion 132, the first isolation portion 132 includes a side surface 1323 facing the opening portion 131, the side surface 1323 includes a first surface 1320, and the side surface 1323 may also include other surfaces intersecting with the first surface 1320, which is not particularly limited in this application. The plane where the first surface 1320 is located intersects with the plane where the substrate 11 is located and forms a first intersection line 1325. Specifically, the first intersection line 1325 may be an edge line of one end of the first surface 1320 close to the substrate 11. Fig.11 As shown, during the preparation process, the arrangement direction of each evaporation hole 21 on the evaporation source 2 for evaporating the second electrode 1213 is usually parallel to the first direction x. In the display panel 1 provided in the present application, the first intersection line 1325 is at a first preset angle with the first direction x, and the first preset angle is set to be greater than or equal to 0° and less than 45°, so that the evaporation material emitted from the evaporation holes 21 arranged along the first direction x in the evaporation source 2 can be evenly distributed on the first surface 1320. Specifically, the "even" refers to the strong consistency of the thickness distribution along the first intersection line 1325 in the first surface 1320, thereby improving the uniformity of the thickness distribution of the contact portion between the second electrode 1213 formed by the evaporation material and the first surface 1320, so that the resistance uniformity of each region of the second electrode 1213 arranged along the first intersection line 1325 is stronger. At the same time, the actual evaporation angle is made larger, thereby increasing the height of the second electrode 1213 on the first surface 1320 and increasing the overlapping area between the isolation structure 13 and the second electrode 1213, so that the brightness uniformity of each part of the light-emitting functional unit 121 is enhanced, the resistance is reduced, and the overlapping stability is improved, which helps to improve the display quality of the display panel 1.

[0083] The “height” mentioned above refers to the climbing distance of the evaporated material on the isolation structure 13. The climbing distance is the minimum distance that the evaporated material extends from the end close to the substrate 11 to the end far away from the substrate 11 on the first surface 1320.

[0084] Specifically, when the thickness distribution consistency of the second electrode 1213 in the first surface 1320 along the direction of the first intersection line 1325 is strong, the resistance difference at each position of the light-emitting functional unit 121 can be small, thereby improving the brightness uniformity of the light-emitting functional unit 121. The height of the second electrode 1213 on the first surface 1320 is high, which can reduce the total resistance in the driving circuit used to drive the light-emitting functional unit 121, so that the brightness of the light-emitting functional unit 121 is higher, thereby helping to reduce the power consumption of the display panel 1. At the same time, the contact area between the first surface 1320 and the second electrode 1213 will be larger, improving the stability and reliability of the connection between the two.

[0085] like Fig.11 As shown, during the preparation process of the display panel 1, the display panel 1 includes a state to be evaporated before the preparation is completed, that is, a state before the second electrode 1213 is prepared. Due to the limitation of the processing and manufacturing process equipment, the relative position of the evaporation source 2 and the display panel 1 in the state to be evaporated is fixed, usually the arrangement direction of the evaporation holes 21 in the evaporation source 2 is parallel to the first direction x, and the preset direction m of the evaporation source 2 is parallel to the substrate 11 and perpendicular to the first direction x. Changing the relative position of the evaporation source 2 and the display panel 1 in the state to be evaporated will cause a significant increase in the preparation cost. In the above embodiment, by making the side 1323 of the isolation structure 13 include the first surface 1320, the distribution uniformity of the overlapped portion of the second electrode 1213 and the first isolation portion 132 can be improved by only changing the shape of the side wall of the opening 131 without changing the arrangement of the opening 131 in the display panel 1 and the relative position of the evaporation source 2 and the display panel 1 to be evaporated, thereby improving the quality of the display panel 1 while saving the preparation cost.

[0086] In the above embodiment, the isolation structure 13 is made of a conductive material, so that the second electrodes 1213 between adjacent light-emitting functional units 121 can be electrically connected to reduce the number of power supply lines to the second electrodes 1213 in the display panel 1, thereby simplifying the wiring in the display panel 1 and reducing the manufacturing cost.

[0087] In the above-mentioned embodiment, the substrate 11 may be formed of a polymer material such as glass, polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass fiber reinforced plastic (FRP). It may be transparent, translucent or opaque. The substrate 11 in the embodiment of the present invention may also be a flexible substrate 11, formed of a thinner polymer, such as polyimide. The substrate 11 may also include a buffer layer, which may include a multi-layer inorganic and organic layer stacked structure to block oxygen and moisture, prevent moisture or impurities from diffusing through the substrate 11, and provide a flat surface on the upper surface of the substrate 11. The specific structure of the present invention will not be repeated.

[0088] In a feasible implementation manner, the first preset angle is greater than or equal to 0° and less than 15°.

[0089] In the above embodiment, when the first preset angle is 0°, the uniformity of the distribution of the evaporation material on the first surface 1320 is optimal. The first preset angle is set to be greater than or equal to 0° and less than 15°, so that the distribution uniformity and height of the evaporation material emitted from the evaporation holes arranged along the first direction x on the first surface 1320 can be strong, while taking into account the deviation of the first preset angle caused by the accuracy of the preparation process.

[0090] In a possible implementation, Figure 8 As shown, the first intersection line 1325 is parallel to the first direction x. At this time, the actual evaporation angle is the original evaporation angle of the evaporation source 2, and the evaporation effect is optimal. Therefore, on the basis of not changing the relative position of the evaporation source 2 and the display panel 1 to be evaporated, the overlap area between the second electrode 1213 and the first isolation portion 132 is increased, and the resistance of the second electrode 1213 is reduced, thereby reducing the power consumption of the display panel 1, and improving the luminous quality of the luminous functional unit 121, while taking into account the production cost.

[0091] In a possible implementation, Figure 7 As shown, the display panel 1 includes a plurality of data lines 112 , and the plurality of data lines extend along a first direction x.

[0092] In a feasible implementation, the plurality of first scan lines 111 extend along the second direction y, and the first direction x is perpendicular to the second direction y. Fig.10 As shown, the first isolation portion 132 includes a top surface 1321 and a bottom surface 1322 parallel to the substrate 11 , the top surface 1321 is located on a side of the bottom surface 1322 away from the substrate 11 , and the first surface 1320 is connected to the bottom surface 1322 .

[0093] In the above embodiment, the second electrode 1213 includes a first portion 1214 located inside the opening portion 131 formed by the first isolation portion 132, and the orthographic projection of the first portion 1214 on the substrate 11 does not overlap with the orthographic projection of the first isolation portion 132 on the substrate 11. The second electrode 1213 also includes a second portion 1215 in contact with the first surface 1320, and the first portion 1214 and the second portion 1215 are continuously arranged. The first surface 1320 is connected to the bottom surface 1322 and extends from the bottom surface 1322 to the top surface 1321, so that in the process of forming the second electrode 1213, the connection yield between the second portion 1215 on the first surface 1320 and the first portion 1214 can be improved. The continuous arrangement of the first portion 1214 and the second portion 1215 can be achieved without considering the film thickness of the second electrode 1213, which can simplify the preparation process.

[0094] In a possible implementation, Figure 8 As shown, the edge of the orthographic projection pattern of the first isolation portion 132 on the substrate 11 is serrated.

[0095] In the above embodiment, the edge of the figure of the orthographic projection of the first isolation portion 132 on the substrate 11 is serrated, so that different first surfaces 1320 can be connected and enclosed to form the opening 131 .

[0096] In a possible implementation, Fig.10 As shown, the first isolation portion 132 includes a first cross section 1324 , the first cross section 1324 is perpendicular to the substrate 11 , and the shape of the first cross section 1324 is a regular trapezoid.

[0097] In the above embodiment, the shape of the first cross section 1324 is a right trapezoid, that is, the side surface 1323 of the first isolation portion 132 is inclined relative to the plane where the substrate 11 is located, and the end of the side wall away from the substrate 11 is inclined relative to the end closer to the substrate 11 in a direction away from the center of the opening portion 131, so that the side wall can more easily receive the evaporated material, so that the formed second electrode 1213 can more easily contact the side wall and be continuously arranged on the side wall.

[0098] In a possible implementation, Figure 8 and Fig. 9 As shown, the side surface 1323 also includes a second surface 1326, and the second surface 1326 and the first surface 1320 are alternately arranged along the direction around the center of the opening portion 131, and the second surface 1326 is connected to the first surface 1320. The plane where the second surface 1326 is located intersects with the plane where the substrate 11 is located and forms a second intersection line 1327. The second intersection line 1327 is at a second preset angle α2 with the first direction x, and the second preset angle α2 is greater than 45° and less than or equal to 90°.

[0099] In the above embodiment, the side surface 1323 of the first isolation portion 132 also includes a second surface 1326, and the second surface 1326 and the first surface 1320 are alternately arranged in a direction around the center of the opening portion 131, and adjacent first surfaces 1320 are connected by the second surface 1326, thereby enclosing the opening portion 131 and realizing the design of the shape of the opening portion 131.

[0100] In the above embodiment, the plane where the second surface 1326 is located intersects with the plane where the substrate 11 is located and forms a second intersection line 1327. The second intersection line 1327 forms a second preset angle α2 with the first direction x. The second preset angle α2 is greater than 45° and less than or equal to 90°, that is, the second surface 1326 is less likely to receive the evaporation material than the first surface 1320, and its function is only to connect the adjacent first surfaces 1320. The larger the second preset angle α2 is within its own value range, the smaller the actual evaporation angle of the evaporation source 2 on the second surface 1326, and the closer the distance between the two connected first surfaces 1320 along the first direction x, so that under the premise that the size of the opening 131 along the first direction x is constant, the proportion of the projection area of ​​the first surface 1320 in the preset direction in the total projection area of ​​the first surface 1320 and the second surface 1326 in the preset direction is increased, wherein the preset direction is parallel to the substrate 11 and perpendicular to the first direction x. Thereby, the contact area between the first isolation portion 132 and the second electrode 1213 can be further increased.

[0101] In a possible implementation, Figure 8 As shown, the second preset angle α2 is equal to 90°.

[0102] In the above embodiment, when the second preset angle α2 is 90°, the projection area of ​​the first surface 1320 in the preset direction accounts for the largest proportion of the total projection area of ​​the first surface 1320 and the second surface 1326 in the preset direction, and the effect is best.

[0103] In a possible implementation, Fig.10 and Fig.12 As shown, the first isolation portion 132 includes a top surface 1321 and a bottom surface 1322 parallel to the substrate 11, the top surface 1321 is located on the side of the bottom surface 1322 away from the substrate 11, and the intersection length a between the second surface 1326 and the bottom surface 1322 is smaller than the intersection length A between the first surface 1320 and the bottom surface 1322.

[0104] The first surface 1320 is used to receive the evaporated material to form the second electrode 1213 in contact with the first isolation portion 132, and the second surface 1326 is used to connect the adjacent first surfaces 1320. Therefore, the intersection length of the first surface 1320 and the bottom surface 1322 is greater than the intersection length of the second surface 1326 and the bottom surface 1322. The overlapping area between the side wall and the second electrode 1213 can be increased, thereby improving the overlapping yield between the two.

[0105] In a possible implementation, Fig.13 As shown, in the opening portion 131, the orthographic projection of one end of the intersection of the first surface 1320 and the second surface 1326 close to the substrate 11 on the substrate 11 is located on a first virtual quadrilateral 14, or on a virtual circle (not shown in the figure), and the side of the first virtual quadrilateral 14 forms a first angle c1 with the first direction x, and the degree of the first angle c1 is greater than 0° and less than 90°.

[0106] In the above embodiment, in the opening 131, the orthographic projection of the end of the intersection line of the first surface 1320 and the second surface 1326 close to the substrate 11 on the substrate 11 is located on a first virtual quadrilateral 14, or on a virtual circle, which can facilitate preparation on the one hand, and reduce the influence of the setting of the first surface 1320 and the second surface 1326 on the aperture ratio on the other hand. At the same time, when the display panel 1 is a rectangular display panel 1, the rectangular display panel 1 usually includes two sides parallel to the first direction x and two sides perpendicular to the first direction x, and the sides of the first virtual quadrilateral 14 and the first direction x are set to form a first angle c1 greater than 0° and less than 90°, thereby reducing the probability of display defects such as stripes in the display, reducing the jagged feeling of the display, and making the picture display better.

[0107] In a possible implementation, Fig.13 As shown, the first virtual quadrilateral 14 is a rectangle, and the first angle c1 is 45°.

[0108] In the above embodiment, the first angle c1 is 45°, which can further reduce the probability of display defects such as stripes in the display, reduce the jagged feeling of the display, and make the picture display better.

[0109] In a possible implementation, Figure 1As shown, the multiple light-emitting functional units 121 include multiple first light-emitting functional units 1216, multiple second light-emitting functional units 1217 and multiple third light-emitting functional units 1218, wherein each first light-emitting functional unit 1216 is located inside a second virtual quadrilateral 18, two opposite vertices in each second virtual quadrilateral 18 coincide with the center of the second light-emitting functional unit 1217, and the other two opposite vertices coincide with the center of the third light-emitting functional unit 1218, and the number ratio of the first light-emitting functional unit 1216, the second light-emitting functional unit 1217 and the third light-emitting functional unit 1218 is 2:1:1.

[0110] In this arrangement, the shapes of the second electrodes 1213 in the light-emitting functional units 121 are preferably the same to facilitate preparation.

[0111] In the above embodiment, the color of the first light-emitting functional unit 1216 is green, and the color of the second light-emitting functional unit 1217 is red or blue. When the color of the second light-emitting functional unit 1217 is red, the color of the third light-emitting functional unit 1218 is blue. When the color of the second light-emitting functional unit 1217 is blue, the color of the third light-emitting functional unit 1218 is red.

[0112] In the above embodiment, the first isolation portion 132 can be improved without changing the arrangement of the light-emitting functional units 121 . A first surface 1320 is formed on the side of the first isolation portion 132 facing the opening 131 to enhance the overlap effect between the second electrode 1213 and the first isolation portion 132 .

[0113] In a possible implementation, Fig.10 As shown, the isolation structure 13 further includes a second isolation portion 133 , which is located on a side of the first isolation portion 132 away from the substrate 11 , and an orthographic projection of the first isolation portion 132 on the substrate 11 is located within an orthographic projection of the second isolation portion 133 on the substrate 11 .

[0114] In the isolation structure 13, the orthographic projection of the first isolation portion 132 on the substrate 11 is located within the orthographic projection of the second isolation portion 133 on the substrate 11, and the orthographic projection area of ​​the second isolation portion 133 on the substrate 11 is larger than the orthographic projection area of ​​the first isolation portion 132 on the substrate 11, thereby forming a step portion between the first isolation portion 132 and the second isolation portion 133. When preparing light-emitting functional units 121 of various colors, firstly, the film layers in the light-emitting functional units 121 of one color are formed on the entire surface, and then the light-emitting functional units 121 of the color are formed at the designated opening 131 by etching, and the openings for accommodating the light-emitting functional layers 1212 of other colors are exposed. Light-emitting functional units 121 of different colors are prepared in multiple times, and no metal fine mask plate is required in the above preparation process, thereby saving preparation costs. The isolation structure 13 can be prepared and formed by dark-colored materials, so as to have a shading effect, prevent cross-light between adjacent light-emitting functional units 121, and block the probability of reflected light formed by the structure below the isolation structure 13 reflecting external light from being emitted from the light-emitting surface of the display panel 1, thereby reducing the reflectivity of the display panel 1.

[0115] In a possible implementation, Fig.14 As shown, the edge of the orthographic projection pattern of the second isolation portion 133 on the substrate 11 is serrated.

[0116] In the above embodiment, the edge of the orthographic projection figure of the second isolation portion 133 on the substrate 11 is serrated, so that the shape of the second isolation portion 133 can be changed to match the shape of the first isolation portion 132, and the serrated edge of the orthographic projection figure of the second isolation portion 133 on the substrate 11 can be located inside the serrated edge of the orthographic projection figure of the first isolation portion 132 on the substrate 11, and the edges of the two serrated figures are parallel to each other, so that the second isolation portion 133 can have the same shielding effect on each position of the first isolation portion 132, which helps to improve the height uniformity of the second electrode 1213.

[0117] In a possible implementation, Fig.10 As shown, it also includes a pixel definition layer 17, which is located on one side of the substrate 11. The pixel definition layer 17 includes a pixel defining portion 171 and a first opening 172 defined by the pixel defining portion 171, and at least part of the light-emitting functional layer 1212 is arranged in the first opening 172.

[0118] The pixel definition layer 17 can define the position of the light-emitting functional unit 121 and cover the edge of the first electrode 1211 to achieve insulation between the first electrodes 1211 and between the first electrode 1211 and the isolation structure 13 .

[0119] The isolation structure 13 may be formed by using a dark material. In this case, the pixel definition layer 17 may be made of a light-transmitting inorganic material to further reduce the material cost.

[0120] In a possible implementation, Fig.10 As shown, the isolation structure 13 is located on a side of the pixel defining portion 171 facing away from the substrate 11 .

[0121] In a possible implementation, Fig.15 As shown, a groove 173 is provided on the side of the pixel defining portion 171 facing away from the substrate 11, and the isolation structure 13 is located in the groove 173. The distance between the side of the isolation structure 13 facing away from the substrate 11 and the surface of the substrate 11 can be reduced, thereby reducing the shielding of the large-angle light emitted by the light-emitting functional layer 1212 by the isolation structure 13, thereby improving the display brightness of the display panel 1.

[0122] In a possible implementation, Fig.16 As shown, the pixel defining portion 171 includes a second opening 174, and the isolation structure 13 is located in the second opening 174. The second opening 174 may be a through hole that penetrates the pixel defining portion 171 in a thickness direction.

[0123] The pixel definition layer 17 can be provided to achieve insulation between the first electrode 1211 and the isolation structure 13, and the pixel definition layer 17 can protect the first electrode 1211. When the first electrode 1211 includes a material that is easily oxidized, such as silver, the probability of oxidation of the first electrode 1211 can be reduced. The isolation structure 13 is directly located on the substrate 11, so that the distance between the side of the isolation structure 13 facing away from the substrate 11 and the surface of the substrate 11 can be further reduced, so that the isolation structure 13 can reduce the shielding of the large-angle light emitted by the light-emitting functional unit 121, so as to improve the display brightness of the display panel 1.

[0124] In a feasible implementation manner, the side surface 1323 further includes a second surface 1326, and the second surface 1326 and the first surface 1320 are alternately arranged along the circumference of the opening 131, and the second surface 1326 is connected to the first surface 1320. Fig.17 As shown, in the opening portion 131, the orthographic projection of the end of the intersection line of the first surface 1320 and the second surface 1326 close to the substrate 11 is located on the virtual circle 15, and the orthographic projection figure of the first opening 172 on the substrate 11 includes a circle 176, and the center of the circle 176 coincides with the center of the virtual circle 15.

[0125] In another feasible implementation, the side surface 1323 further includes a second surface 1326, and the second surface 1326 and the first surface 1320 are alternately arranged along the circumference of the opening 131, and the second surface 1326 is connected to the first surface 1320. Fig.13 and Fig.18 As shown, in the opening portion 131, the orthographic projection of one end of the intersection of the first surface 1320 and the second surface 1326 close to the substrate 11 is located on the first virtual quadrilateral 14, and the orthographic projection figure of the first opening 172 on the substrate 11 includes a quadrilateral 175, the center of the quadrilateral 175 coincides with the center of the first virtual quadrilateral 14, a diagonal line of the quadrilateral 175 is collinear with a diagonal line of the first virtual quadrilateral 14, and another diagonal line of the quadrilateral 175 is collinear with another diagonal line of the first virtual quadrilateral 14, and a second angle is formed between the quadrilateral 175 and the opposite sides of the first virtual quadrilateral 14, and the degree of the second angle is greater than or equal to 0° and less than 15°.

[0126] In the above embodiment, the orthographic projection of the end of the intersection line of the first surface 1320 and the second surface 1326 close to the substrate 11 is located on the virtual circle 15 or the first virtual quadrilateral 14, the shape of the first opening 172 is the same as the shape of the virtual circle 15 or the first virtual quadrilateral 14, and the width of the annular structure formed between the first opening 172 and the virtual circle 15 or the first virtual quadrilateral 14 is the same or similar at all places, which can facilitate preparation on the one hand, and on the other hand, the isolation structure 13 can be better prepared under the premise of ensuring the distance between the first openings 172. At the same time, it helps to improve the aperture ratio of the display panel to ensure the display effect.

[0127] The second aspect of the present application also provides a display panel 1, such as Fig.10 and Fig.14 As shown, it includes a substrate 11, an isolation structure 13 and a plurality of light-emitting functional units 121. The isolation structure 13 is formed on one side of the substrate 11, and the isolation structure 13 encloses an opening 131. The plurality of light-emitting functional units 121 are arranged on the substrate 11 and corresponding to the opening 131. The light-emitting functional units 121 include a first electrode 1211, a light-emitting functional layer 1212 and a second electrode 1213; wherein the second electrode 1213 is in contact with the isolation structure 13, and the edge of the orthographic projection pattern of the isolation structure 13 on the substrate 11 is serrated.

[0128] In the above embodiment, the edge of the positive projection figure of the isolation structure 13 on the substrate 11 is serrated, so that the isolation structure 13 includes a surface that is easy to receive the evaporated material and a surface that is not easy to receive the evaporated material. The surface that is easy to receive the evaporated material can make the contact effect between the second electrode 1213 and the isolation structure 13 better, and the surface that is not easy to receive the evaporated material can be connected to the adjacent surfaces of the easy to receive the evaporated material to enclose and form an opening 131 and adjust the shape of the opening 131, thereby reducing the probability of display defects such as stripes in the display, reducing the jagged feeling of the display, and making the picture display better.

[0129] In a possible implementation, Fig.10 , Fig.14 , Fig.17 and Fig.18 As shown, the display panel 1 also includes a pixel definition layer 17, which is located on one side of the substrate 11. The pixel definition layer 17 includes a pixel defining portion 171 and a first opening 172 defined by the pixel defining portion 171, and at least part of the light-emitting functional layer 1212 is arranged in the first opening 172.

[0130] The serrated protrusion of the edge of the orthographic projection of the isolation structure 13 on the substrate 11 close to the center of the opening 131 is located on the virtual circle 15, and the orthographic projection of the first opening 172 on the substrate 11 includes a circle 176, and the circle 176 coincides with the center of the virtual circle 15. Or,

[0131] The jagged protruding end of the edge of the orthographic projection figure of the isolation structure 13 on the substrate 11, which is close to the center of the opening 131, is located on the first virtual quadrilateral 14. The orthographic projection figure of the first opening 172 on the substrate 11 includes a quadrilateral 175. The center of the quadrilateral 175 coincides with the center of the first virtual quadrilateral 14. A diagonal line of the quadrilateral 175 is collinear with a diagonal line of the first virtual quadrilateral 14, and another diagonal line of the quadrilateral 175 is collinear with another diagonal line of the first virtual quadrilateral 14. A second angle is formed between the quadrilateral 175 and the opposite sides of the first virtual quadrilateral 14, and the degree of the second angle is greater than or equal to 0° and less than 15°.

[0132] In the above embodiment, the serrated protruding end E of the edge of the orthographic projection pattern of the isolation structure 13 on the substrate close to the center of the opening is located on the virtual circle 15 or the first virtual quadrilateral 14, the shape of the first opening 172 is the same as the shape of the virtual circle 15 or the first virtual quadrilateral 14, and the width of the annular structure formed between the first opening 172 and the virtual circle 15 or the first virtual quadrilateral 14 is the same or similar at all places, which can facilitate preparation on the one hand, and on the other hand, the isolation structure 13 can be better prepared under the premise of ensuring the distance between the first openings 172. At the same time, it helps to improve the aperture ratio of the display panel to ensure the display effect.

[0133] Display device 3, such as Fig.19 As shown, it includes any one of the display panels 1 provided in the first aspect of the present application.

[0134] Since the display device 3 provided in the third aspect embodiment of the present application includes the display panel 1 of any one of the first and second aspects, the display device provided in the third aspect embodiment of the present application has the beneficial effects of the display panel 1 of any one of the first and second aspects, which will not be repeated here.

[0135] 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.

[0136] A fourth aspect of the present application also provides a method for preparing a display panel 1, such as Fig. 20 As shown, including:

[0137] S100 , providing a substrate 11 .

[0138] S200, an isolation structure 13 is formed on one side of the substrate 11, the isolation structure 13 encloses an opening portion 131, the isolation structure 13 includes a first isolation portion 132, the first isolation portion 132 includes a side surface 1323 facing the side of the opening portion 131, the side surface 1323 includes a first surface 1320, the plane where the first surface 1320 is located intersects with the plane where the substrate 11 is located and forms a first intersection line 1325, the first intersection line 1325 is at a first preset angle with the first direction x, and the first preset angle is greater than or equal to 0° and less than 45°.

[0139] S300, forming a plurality of light-emitting functional units 121 on the substrate 11, wherein the light-emitting functional units 121 are arranged corresponding to the openings 131, including: forming a first electrode 1211 on the substrate 11; forming a light-emitting functional layer 1212 on a side of the first electrode 1211 away from the substrate 11; forming a second electrode 1213 on a side of the light-emitting functional layer 1212 away from the substrate 11, including: providing a vapor deposition source 2, wherein the vapor deposition source 2 includes a plurality of vapor deposition holes, and the vapor deposition holes are arranged along a third direction; and setting the positional relationship between the vapor deposition source 2 and the substrate 11 such that the vapor deposition source 2 is located on a side of the isolation structure 13 away from the substrate 11, and the third direction is parallel to the first direction x.

[0140] In the above preparation method, a first surface 1320 is set on the side of the first isolation structure 13 facing the opening portion 131, so that the plane where the first surface 1320 is located intersects with the plane where the substrate 11 is located and forms a first intersection line 1325, and the first intersection line 1325 is at a first preset angle with the first direction x, and the first preset angle is greater than or equal to 0° and less than 45°. In the preparation process, the arrangement direction of the evaporation holes in the evaporation source 2 is parallel to the first direction x, so that the actual evaporation angle between the evaporation source 2 and the first surface 1320 can be improved, so that it can be close to the original evaporation angle of the evaporation source 2 or equal to the original evaporation angle, so that a more uniform and higher height evaporation material can be attached to the first surface 1320, thereby achieving an increase in the area of ​​the second electrode 1213 and the uniformity of resistance, which helps to improve the display quality of the display panel 1.

[0141] Since the display device provided in the fourth aspect embodiment of the present application is used to form the display panel 1 of any one of the first and second aspects, the display device provided in the fourth aspect embodiment of the present application has the beneficial effects of the display panel 1 of any one of the first and second aspects, which will not be repeated here.

[0142] In the above implementation, between step S100 and step S200, the following steps are also included:

[0143] A plurality of first scanning lines 111 are formed on one side of the substrate 11 , and the plurality of first scanning lines 111 are arranged along a first direction x.

[0144] In the above embodiment, a plurality of first scanning lines 111 arranged along the first direction x are also formed on the substrate 11, and when forming the first surface 1320 on the substrate 11, the first direction x defined by the first scanning lines 111 can be used as a reference for preparation. In the existing manufacturing process equipment of the display panel 1, the first direction x defined by the first scanning lines 111 in the display panel 1 to be evaporated is generally set to be parallel to the arrangement direction of the evaporation holes in the evaporation source 2, so that the positional relationship between the first surface 1320 and the evaporation source 2 can make the second electrode 1213 better formed on the first surface 1320 without changing the relative position of the evaporation source 2 and the display panel 1 to be evaporated. In a feasible embodiment, it also includes: moving the evaporation source 2 along a preset direction so that the evaporation material evaporated from the evaporation hole is formed on the first surface 1320 to form the second electrode 1213, and the second electrode 1213 is in contact with the first surface 1320, wherein the preset direction is parallel to the plane where the substrate 11 is located and perpendicular to the first direction x.

[0145] In the above embodiment, the evaporation source 2 moves along a preset direction m perpendicular to the first direction x, so as to form an evaporation material with a higher height and a more uniform thickness on the two opposite side walls 1323, thereby forming a second electrode 1213 with a larger overlapping area with the isolation structure 13 and a more uniform thickness.

[0146] In a feasible implementation, the first preset angle is 0°, and the uniformity of the distribution of the evaporation material on the first surface 1320 is optimal. The first preset angle is set to be greater than or equal to 0° and less than 15°, so that the distribution uniformity and height of the evaporation material emitted from the evaporation holes arranged along the first direction x on the first surface 1320 can be strong, while taking into account the deviation of the first preset angle caused by the accuracy of the preparation process.

[0147] In a feasible embodiment, the side surface 1323 also includes a second surface 1326, and the second surface 1326 and the first surface 1320 are alternately arranged in a direction around the center of the opening portion 131. The second surface 1326 is connected to the first surface 1320. The plane where the second surface 1326 is located intersects with the plane where the substrate 11 is located and forms a second intersection line. The second intersection line is at a second preset angle with the first direction x, and the second preset angle is greater than 45° and less than or equal to 90°; that is, the second surface 1326 is less likely to receive the evaporated material than the first surface 1320, and its function is only to connect the adjacent first surfaces 1320. The larger the second preset angle α2 is within its own value range, the smaller the actual evaporation angle of the evaporation source 2 on the second surface 1326 is, and the closer the distance between the two first surfaces 1320 connected along the first direction x is, so that under the premise that the size of the opening 131 along the first direction x is constant, the proportion of the projection area of ​​the first surface 1320 in the preset direction in the total projection area of ​​the first surface 1320 and the second surface 1326 in the preset direction is increased, wherein the preset direction is parallel to the substrate 11 and perpendicular to the first direction x. Thus, the contact area between the first isolation portion 132 and the second electrode 1213 can be further increased.

[0148] In a feasible embodiment, the length of the intersection line between the second surface 1326 and the bottom surface 1322 is smaller than the length of the intersection line between the first surface 1320 and the bottom surface 1322; the first surface 1320 is used to receive the evaporated material to form the second electrode 1213 in contact with the first isolation portion 132, and the second surface 1326 is used to connect the adjacent first surfaces 1320. Therefore, the length of the intersection line between the first surface 1320 and the bottom surface 1322 is greater than the length of the intersection line between the second surface 1326 and the bottom surface 1322, which can increase the overlap area between the side wall and the second electrode 1213, thereby improving the overlap yield between the two.

[0149] In a feasible implementation manner, the edge of the orthographic projection pattern of the first isolation portion 132 on the substrate 11 is serrated; thereby, different first surfaces 1320 can be connected and enclosed to form the opening portion 131 .

[0150] 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, A plurality of first scanning lines are located on one side of the substrate, and the plurality of first scanning lines are arranged along a first direction; An isolation structure is formed on one side of the substrate, and the isolation structure encloses an opening portion, the isolation structure includes a first isolation portion, the first isolation portion includes a side facing the opening portion, the side includes a first surface, the plane where the first surface is located intersects with the plane where the substrate is located and forms a first intersection line, and the first intersection line forms a first preset angle with the first direction; A plurality of light-emitting functional units, wherein the light-emitting functional units are arranged on the substrate and corresponding to the openings, and the light-emitting functional units include a first electrode, a light-emitting functional layer, and a second electrode; Wherein, the second electrode contacts the isolation structure, and the first preset angle is greater than or equal to 0° and less than 45°.

2. The display panel according to claim 1, characterized in that: The first preset angle is greater than or equal to 0° and less than 15°; Preferably, the first intersection line is parallel to the first direction; Preferably, the display panel comprises a plurality of data lines, and the plurality of data lines extend along the first direction; Preferably, the plurality of first scanning lines extend along a second direction, and the first direction is perpendicular to the second direction.

3. The display panel according to claim 1, characterized in that: The first isolation portion includes a top surface and a bottom surface parallel to the substrate, the top surface is located on a side of the bottom surface away from the substrate, and the first surface is connected to the bottom surface.

4. The display panel according to claim 1, characterized in that: The edge of the orthographic projection pattern of the first isolation portion on the substrate is serrated; Preferably, the first isolation portion includes a first cross section, the first cross section is perpendicular to the substrate, and the shape of the first cross section is a regular trapezoid.

5. The display panel according to claim 1, characterized in that: The side surface further includes a second surface, the second surface and the first surface are alternately arranged along a direction around the center of the opening, the second surface is connected to the first surface, a plane where the second surface is located intersects with a plane where the substrate is located and forms a second intersection line, the second intersection line forms a second preset angle with the first direction, and the second preset angle is greater than 45° and less than or equal to 90°; Preferably, the second preset angle is equal to 90°; Preferably, the first isolation portion includes a top surface and a bottom surface parallel to the substrate, the top surface is located on the side of the bottom surface away from the substrate, and the length of the intersection line between the second surface and the bottom surface is shorter than the length of the intersection line between the first surface and the bottom surface; Preferably, in the opening, an orthographic projection of an end of an intersection line of the first surface and the second surface close to the substrate on the substrate is located on a first virtual quadrilateral or a virtual circle, and a side of the first virtual quadrilateral forms a first angle with the first direction, and the degree of the first angle is greater than 0° and less than 90°; Preferably, the first virtual quadrilateral is a rectangle, and the first angle is 45°.

6. The display panel according to claim 1, characterized in that: The multiple light-emitting functional units include multiple first light-emitting functional units, multiple second light-emitting functional units and multiple third light-emitting functional units, wherein each of the first light-emitting functional units is located inside a second virtual quadrilateral, two opposite vertices in each of the second virtual quadrilaterals coincide with the center of the second light-emitting functional unit, and the other two opposite vertices coincide with the center of the third light-emitting functional unit, and the ratio of the number of the first light-emitting functional units, the second light-emitting functional units and the third light-emitting functional units is 2:1:

1.

7. The display panel according to claim 1, characterized in that: The isolation structure further includes a second isolation portion, the second isolation portion is located on a side of the first isolation portion away from the substrate, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate; Preferably, the edge of the orthographic projection pattern of the second isolation portion on the substrate is serrated.

8. The display panel according to claim 1, characterized in that: Also includes a pixel definition layer, the pixel definition layer is located on one side of the substrate, the pixel definition layer includes a pixel definition portion and a first opening defined by the pixel definition portion, at least part of the light emitting function layer is arranged in the first opening; Preferably, the isolation structure is located on a side of the pixel defining portion away from the substrate; Preferably, a groove is provided on a side of the pixel defining portion facing away from the substrate, and the isolation structure is located in the groove; Preferably, the pixel defining portion includes a second opening, and the isolation structure is located in the second opening.

9. The display panel according to claim 8, characterized in that: The side surface further includes a second surface, the second surface and the first surface are alternately arranged in a direction around the center of the opening, and the second surface is connected to the first surface; In the opening, the orthographic projection of one end of the intersection line of the first surface and the second surface close to the substrate on the substrate is located on a virtual circle, and the orthographic projection figure of the first opening on the substrate includes a circle, and the center of the circle coincides with the center of the virtual circle; or, In the opening portion, the orthographic projection of one end of the intersection of the first surface and the second surface close to the substrate on the substrate is located on a first virtual quadrilateral, and the orthographic projection figure of the first opening on the substrate includes a quadrilateral, the center of the quadrilateral coincides with the center of the first virtual quadrilateral, one diagonal line of the quadrilateral is collinear with one diagonal line of the first virtual quadrilateral, and another diagonal line of the quadrilateral is collinear with another diagonal line of the first virtual quadrilateral, and a second angle is formed between the quadrilateral and the opposite sides of the first virtual quadrilateral, and the degree of the second angle is greater than or equal to 0° and less than 15°.

10. A display panel, characterized in that: include: substrate, An isolation structure is formed on one side of the substrate, and the isolation structure encloses an opening; A plurality of light-emitting functional units, wherein the light-emitting functional units are arranged on the substrate and corresponding to the openings, and the light-emitting functional units include a first electrode, a light-emitting functional layer, and a second electrode; The second electrode is in contact with the isolation structure, and the edge of the orthographic projection pattern of the isolation structure on the substrate is serrated.

11. The display panel according to claim 10, characterized in that: Also includes a pixel definition layer, the pixel definition layer is located on one side of the substrate, the pixel definition layer includes a pixel definition portion and a first opening defined by the pixel definition portion, at least part of the light emitting function layer is arranged in the first opening; The serrated protruding end of the edge of the orthographic projection of the isolation structure on the substrate close to the center of the opening is located on a virtual circle, the orthographic projection of the first opening on the substrate includes a circle, and the circle coincides with the center of the virtual circle; or, The jagged protruding end of the edge of the orthographic projection figure of the isolation structure on the substrate, which is close to the center of the opening, is located on the first virtual quadrilateral. The orthographic projection figure of the first opening on the substrate includes a quadrilateral. The center of the quadrilateral coincides with that of the first virtual quadrilateral. One diagonal of the quadrilateral is collinear with one diagonal of the first virtual quadrilateral, and another diagonal of the quadrilateral is collinear with another diagonal of the first virtual quadrilateral. A second angle is formed between the quadrilateral and the opposite sides of the first virtual quadrilateral, and the degree of the second angle is greater than or equal to 0° and less than 15°.

12. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-11.

13. A method for preparing a display panel, characterized in that: include: providing a substrate; An isolation structure is formed on one side of the substrate, the isolation structure encloses an opening, the isolation structure includes a first isolation portion, the first isolation portion includes a side facing the opening, the side includes a first surface, a plane where the first surface is located intersects with a plane where the substrate is located and forms a first intersection line, the first intersection line forms a first preset angle with the first direction, and the first preset angle is greater than or equal to 0° and less than 45°; A plurality of light-emitting functional units are formed on the substrate, and the light-emitting functional units are arranged corresponding to the openings, including: forming a first electrode on the substrate; forming a light-emitting functional layer on a side of the first electrode away from the substrate; and forming a second electrode on a side of the light-emitting functional layer away from the substrate; The forming of a second electrode on a side of the light-emitting functional layer away from the substrate comprises: A vapor deposition source is provided, the vapor deposition source comprising a plurality of vapor deposition holes arranged along a third direction; the positional relationship between the vapor deposition source and the substrate is set such that the vapor deposition source is located on a side of the isolation structure away from the substrate, and the third direction is parallel to the first direction.

14. The preparation method according to claim 13, characterized in that: The first preset angle is 0°; Preferably, the side surface further includes a second surface, the second surface and the first surface are alternately arranged along a direction around the center of the opening, the second surface is connected to the first surface, the plane where the second surface is located intersects with the plane where the substrate is located and forms a second intersection line, the second intersection line forms a second preset angle with the first direction, and the second preset angle is greater than 45° and less than or equal to 90°; Preferably, the length of the intersection line between the second surface and the bottom surface is smaller than the length of the intersection line between the first surface and the bottom surface; Preferably, the edge of the orthographic projection pattern of the first isolation portion on the substrate is serrated; Preferably, the method further comprises moving the evaporation source along a preset direction so that the evaporation material evaporated from the evaporation holes is formed on the first surface to form the second electrode, and the second electrode is in contact with the first surface, wherein the preset direction is parallel to the plane where the substrate is located and perpendicular to the first direction; Preferably, the method further comprises forming a plurality of first scanning lines on one side of the substrate, wherein the plurality of first scanning lines are arranged along a first direction.

Images