Display panel and display device

Abstract

The present application provides a display panel and a display device. The present application realizes electrical connection between cathodes of sub-pixels through an isolation structure; on this basis, multiple side walls of each isolation structure are divided into a first side wall and a second side wall, and the thickness of the first side wall is kept unchanged while the area enclosed by the outer side wall of the isolation structure remains unchanged, and the thickness of the second side wall is narrowed, and the area of ​​the area enclosed by the isolation structure is increased without affecting the electrical connection between the isolation structure and the cathode of the sub-pixel, so that the pixel aperture ratio of the sub-pixel can be increased, thereby improving the resolution of the display panel.

Description

Technical Field

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

[0002] At present, the preparation of OLED (Organic Light-Emitting Diode) all uses fine mask for evaporation. The mask is expensive, and it is very costly to launch new products. At the same time, the area of ​​the fine mask opening bridge also limits the effective area of ​​evaporation in the pixel light-emitting area, which is not conducive to improving the aperture ratio. Summary of the invention

[0003] The main technical problem solved by the present application is to provide a display panel and a display device to solve the problem of how to improve the pixel aperture ratio of the display panel in the prior art.

[0004] In order to solve the above technical problems, the first technical solution provided by the present application is: to provide a display panel, which includes:

[0005] a pixel definition layer having a plurality of pixel openings;

[0006] Pixel units, each of the pixel units comprising:

[0007] A plurality of sub-pixels are disposed in the pixel opening in a one-to-one correspondence;

[0008] A plurality of isolation structures are provided, protruding from the pixel definition layer and surrounding the pixel opening; a plurality of side walls of each of the isolation structures are respectively defined as a first side wall and a second side wall; in a direction parallel to the pixel definition layer, the thickness of the first side wall is greater than the thickness of the second side wall; in each of the isolation structures, the first side wall comprises:

[0009] At least a portion of the side wall is extended along the first direction;

[0010] and / or,

[0011] at least a portion of the sidewall extending along the second direction;

[0012] Wherein, in the pixel unit, the first side wall of at least one of the isolation structures includes at least an oblique side wall; the extension direction of the oblique side wall intersects the first direction and the second direction respectively, the first direction is perpendicular to the second direction, and the extension direction of the oblique side wall, the first direction and the second direction are located in the same plane;

[0013] The cathode of the sub-pixel is electrically connected to the isolation structure through the inclined sidewall; and / or, the cathode of the sub-pixel is electrically connected to the isolation structure through the sidewall extending along the first direction.

[0014] Each of the isolation structures surrounds one pixel opening; the plurality of side walls of the isolation structure are respectively arranged in one-to-one correspondence with the side edges of the sub-pixels surrounded by the isolation structures, and are arranged in parallel;

[0015] The sub-pixel includes an anode, a light-emitting layer and a cathode which are stacked in sequence; the light-emitting layer and the cathode are sequentially evaporated on the upper surface of the anode through an evaporation source; the first direction is the long side direction of the evaporation source, and the second direction is the moving direction of the evaporation source.

[0016] Each of the pixel units includes at least one pixel group; at least one sub-pixel and an isolation structure surrounding the sub-pixel form a pixel group; each of the pixel groups is in a hexagonal shape; the hexagon is an axially symmetrical figure or a centrally symmetrical figure; the pixel group includes a side extending along the first direction or the second direction;

[0017] When the pixel unit includes a plurality of the pixel groups, the plurality of the pixel groups are arranged side by side and in contact with each other along the first direction or the second direction, and the sides of two adjacent pixel groups that are close to each other are arranged parallel to each other.

[0018] in,

[0019] The pixel units are repeatedly and arranged side by side in the first direction to form pixel unit rows, and the pixel unit rows are repeatedly arranged in the second direction;

[0020] or,

[0021] The plurality of pixel units are respectively defined as a first pixel unit and a second pixel unit; the first pixel units are centrally symmetrical or axially symmetrical to form the second pixel units, the first pixel units are repeatedly arranged along the first direction to form a first pixel unit row, the second pixel units are repeatedly arranged along the first direction to form a second pixel unit row, and the first pixel unit row and the second pixel unit row are alternately arranged along the second direction.

[0022] Wherein, in the pixel unit, the adjacent sides of two adjacent sub-pixels are arranged parallel to each other;

[0023] The pixel group includes an oblique side and a side extending along the second direction; the extension direction of the oblique side is respectively intersected with the first direction and the second direction; the pixel unit includes three sub-pixels of different colors, and the three sub-pixels of different colors are respectively a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel and an isolation structure surrounding the first sub-pixel are combined to form a first pixel group; the second sub-pixel, the isolation structure surrounding the second sub-pixel, the third sub-pixel and the isolation structure surrounding the third sub-pixel are combined to form a second pixel group; in the second pixel group, the third sub-pixel shares the side wall of the isolation structure extending along the first direction with the second sub-pixel, and is flush with the second direction; the side walls extending along the second direction in two adjacent isolation structures in the first direction are overlapped in a direction perpendicular to the pixel definition layer.

[0024] in,

[0025] In each of the isolation structures, the first sidewall includes all of the inclined sidewalls; in the first direction, adjacent first sidewalls are arranged in contact and electrically connected;

[0026] or,

[0027] In each of the isolation structures, the first side wall includes a side wall extending along the second direction and a portion of the inclined side wall; in the second direction, a plurality of the first side walls are arranged in contact with each other in pairs to form a side wall group, and the side wall group is used to electrically connect two adjacent pixel groups in the second direction; in the first direction, the side wall groups are spaced apart from each other.

[0028] Wherein, in the second pixel group, the first sidewall of the isolation structure further includes a sidewall extending along the first direction.

[0029] Among them, the side wall of the isolation structure includes an isolation column and an eaves structure arranged on the upper surface of the isolation column; the eaves structure covers the isolation column and extends the isolation column in a direction parallel to the pixel definition layer; the eaves structure is conductive or insulating; the isolation column in the first side wall is conductive and is used to be electrically connected to the sub-pixel surrounded by the isolation structure.

[0030] Wherein, the isolation column in the second side wall is conductive;

[0031] or,

[0032] The isolation column in the second side wall has an insulating property, and the isolation column in the second side wall and the pixel definition layer are patterned by using the same insulating material.

[0033] In order to solve the above technical problem, the second technical solution provided in the present application is: to provide a display device, which includes the above display panel.

[0034] Beneficial effects of the present application: Different from the prior art, the present application provides a display panel and a display device, wherein the display panel includes a pixel definition layer and a pixel unit. The pixel definition layer has a plurality of pixel openings. Each pixel unit includes a plurality of sub-pixels and a plurality of isolation structures. A plurality of sub-pixels are arranged in a one-to-one correspondence in the pixel opening. A plurality of isolation structures are arranged protruding from the pixel definition layer and surrounding the pixel opening. The plurality of side walls of each isolation structure are defined as a first side wall and a second side wall, respectively. In a direction parallel to the pixel definition layer, the thickness of the first side wall is greater than the thickness of the second side wall. In each isolation structure, the first side wall includes: at least a portion of the side wall extending in a first direction; and / or, at least a portion of the side wall extending in a second direction; wherein, in the pixel unit, the first side wall of at least one isolation structure includes at least an oblique side wall; the extending directions of the oblique side wall intersect the first direction and the second direction, respectively, the first direction is perpendicular to the second direction, and the extending directions of the oblique side wall, the first direction and the second direction are located in the same plane; the cathode of the sub-pixel is electrically connected to the isolation structure through the oblique side wall; and / or, the cathode of the sub-pixel is electrically connected to the isolation structure through the side wall extending in the first direction. The present application realizes electrical connection between cathodes of sub-pixels through an isolation structure; on this basis, the multiple side walls of each isolation structure are divided into a first side wall and a second side wall. When the area enclosed by the outer side wall of the isolation structure remains unchanged, the thickness of the first side wall is kept unchanged, and the thickness of the second side wall is narrowed. When the electrical connection between the isolation structure and the cathode of the sub-pixel is not affected, the area of ​​the area enclosed by the isolation structure is increased, thereby increasing the pixel aperture ratio of the sub-pixel and further improving the resolution of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments 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 any creative work.

[0036] Figure 1 It is a structural schematic diagram of an embodiment of an evaporation source and a limiting plate in the prior art;

[0037] Figure 2 is a schematic structural diagram of a first embodiment of a display panel provided by the present application;

[0038] Figure 3 is a structural schematic diagram of a first embodiment of a pixel unit provided by the present application;

[0039] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of EE;

[0040] Figure 5 yes Figure 3 A schematic cross-sectional view of an embodiment at FF;

[0041] Figure 6 yes Figure 3 A schematic cross-sectional view of another embodiment at FF;

[0042] Figure 7 is a structural schematic diagram of a second embodiment of a pixel unit provided by the present application;

[0043] Figure 8 is a structural schematic diagram of a third embodiment of a pixel unit provided by the present application;

[0044] Fig. 9 is a structural schematic diagram of a fourth embodiment of a pixel unit provided by the present application;

[0045] Fig.10 is a structural schematic diagram of a fifth embodiment of a pixel unit provided by the present application;

[0046] Fig.11 is a schematic structural diagram of a second embodiment of a display panel provided by the present application;

[0047] Fig.12 is a structural schematic diagram of a first embodiment of a first pixel unit and a second pixel unit provided by the present application;

[0048] Fig.13 is a schematic structural diagram of a third embodiment of a display panel provided by the present application;

[0049] Fig.14 is a structural schematic diagram of a second embodiment of a first pixel unit and a second pixel unit provided by the present application;

[0050] Fig.15 is a schematic structural diagram of a fourth embodiment of a display panel provided by the present application;

[0051] Fig.16 is a schematic structural diagram of a fifth embodiment of a display panel provided by the present application;

[0052] Fig.17 is a structural schematic diagram of a sixth embodiment of a pixel unit provided by the present application;

[0053] Fig.18 is a schematic structural diagram of a sixth embodiment of a display panel provided by the present application;

[0054] Fig.19 is a structural schematic diagram of a seventh embodiment of a pixel unit provided by the present application;

[0055] Fig. 20 is a structural schematic diagram of a seventh embodiment of a display panel provided by the present application;

[0056] Fig.21 Schematic diagram of the structure of the eighth embodiment of the pixel unit provided in the present application.

[0057] Description of Figure Numbers:

[0058] 10. Pixel definition layer; 11. Pixel opening; 20. Pixel unit; 20A. First pixel unit; 20B. Second pixel unit; 21. Sub-pixel; 211. Anode; 212. Light-emitting layer; 213. Cathode; 21A. First sub-pixel; 21B. Second sub-pixel; C. Third sub-pixel; 22. Pixel group; 22A. First pixel group; 22B. Second pixel group; 23. Pixel unit row; 23A. First pixel unit row; 23B. Second pixel unit row; 24. Isolation structure; 241. First side wall; 242. Second side wall; 243. Isolation column; 244. Eaves structure; 245. Side wall group; X. First direction; Y. Second direction; 100. Evaporation source; 200. Limiting plate. DETAILED DESCRIPTION

[0059] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0060] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0061] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0062] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0063] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0064] See also Figure 1 , Figure 1 It is a structural schematic diagram of an embodiment of an evaporation source and a limiting plate in the prior art.

[0065] In the actual evaporation process, since the evaporation source 100 forms an evaporation cloud in the long side direction of the evaporation source 100, the evaporation angle of the evaporation material cannot be controlled in the long side direction of the evaporation source 100, but in the moving direction of the evaporation source 100 (i.e., the scanning direction of the evaporation source 100), the limiting plates 200 on both sides can be used to achieve the purpose of controlling the exit angle of the evaporation material. Therefore, the side wall of the isolation structure extending along the long side direction of the evaporation source 100 can be electrically connected to the cathode of the sub-pixel, while the side wall of the isolation structure extending along the moving direction of the evaporation source 100 cannot be electrically connected to the cathode of the sub-pixel.

[0066] See also Figures 2 to 5 , Figure 2 is a schematic structural diagram of a first embodiment of a display panel provided in the present application, Figure 3 is a structural schematic diagram of a first embodiment of a pixel unit provided in the present application, Figure 4 yes Figure 3Schematic diagram of the cross-sectional structure of EE, Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure of an embodiment at FF.

[0067] Based on the above-mentioned evaporation technology, the present application provides a display panel. The display panel includes a pixel definition layer 10 and a pixel unit 20. The pixel definition layer 10 has a plurality of pixel openings 11. Each pixel unit 20 includes a plurality of sub-pixels 21 and a plurality of isolation structures 24. The plurality of sub-pixels 21 are arranged in the pixel opening 11 in a one-to-one correspondence. The plurality of isolation structures 24 are arranged protruding from the pixel definition layer 10 and surrounding the pixel opening 11. The plurality of side walls of each isolation structure 24 are defined as a first side wall 241 and a second side wall 242, respectively. In a direction parallel to the pixel definition layer 10, the thickness of the first side wall 241 is greater than the thickness of the second side wall 242. In each isolation structure 24, the first side wall 241 includes: at least a portion of the side wall extending along the first direction X; and / or, at least a portion of the side wall extending along the second direction Y. Among them, in the pixel unit 20, the first side wall 241 of at least one isolation structure 24 includes at least an oblique side wall. The extending directions of the oblique side walls are respectively arranged to intersect with the first direction X and the second direction Y, the first direction X is perpendicular to the second direction Y, and the extending directions of the oblique side walls, the first direction X and the second direction Y are located in the same plane; the cathode 213 of the sub-pixel 21 is electrically connected to the isolation structure 24 through the oblique side walls; and / or, the cathode 213 of the sub-pixel 21 is electrically connected to the isolation structure 24 through the side walls extending along the first direction X.

[0068] The present application realizes electrical connection between the cathodes 213 of the sub-pixels 21 through the isolation structure 24. On this basis, the multiple side walls of each isolation structure 24 are divided into a first side wall 241 and a second side wall 242. When the area enclosed by the outer side wall of the isolation structure 24 remains unchanged, the thickness of the first side wall 241 is kept unchanged, and the thickness of the second side wall 242 is narrowed. When the electrical connection between the isolation structure 24 and the cathode 213 of the sub-pixel 21 is not affected, the area of ​​the area enclosed by the isolation structure 24 is increased, thereby increasing the pixel aperture ratio of the sub-pixel 21, and further improving the resolution of the display panel.

[0069] The pixel definition layer 10 is used to define the position of the sub-pixel 21. A plurality of pixel openings 11 on the pixel definition layer 10 are arranged at intervals.

[0070] One sub-pixel 21 is disposed in one pixel opening 11. One sub-pixel 21 corresponds to one color pixel, and the type of color pixel corresponding to the sub-pixel 21 is not limited here and is selected according to actual needs.

[0071] The sub-pixel 21 includes an anode 211, a light emitting layer 212 and a cathode 213 which are sequentially stacked in a direction toward the isolation structure 24. The light emitting layer 212 and the cathode 213 are sequentially evaporated on the upper surface of the anode 211 by an evaporation source.

[0072] The sub-pixel 21 includes an OLED (Organic Light-Emitting Diode).

[0073] The shape of the pixel opening 11 determines the shape and size of the sub-pixel 21 disposed in the pixel opening 11. Specifically, in a direction parallel to the pixel definition layer 10, the contour shape of one end of the pixel opening 11 away from the isolation structure 24 is the shape of the sub-pixel 21 in the pixel opening 11. In a direction parallel to the pixel definition layer 10, the contour shape of one end of the pixel opening 11 away from the isolation structure 24 is similar to the contour shape of one end of the pixel opening 11 close to the isolation structure 24.

[0074] The isolation structure 24 is disposed on the upper surface of the pixel definition layer 10 and protrudes from the pixel definition layer 10 . The isolation structure 24 surrounds at least one pixel opening 11 .

[0075] When one isolation structure 24 surrounds a plurality of pixel openings 11 , the corresponding sub-pixels 21 in the plurality of pixel openings 11 are electrically connected to each other, and the sub-pixels 21 all correspond to pixels of one color, so as to avoid pixel crosstalk.

[0076] When an isolation structure 24 surrounds a pixel opening 11, the area surrounded by the inner sidewall of the isolation structure 24 determines the shape of the pixel opening 11. It can be understood that in the direction parallel to the pixel definition layer 10, the shape of the area surrounded by the inner sidewall of the isolation structure 24 is similar to the shape of the cross section of the pixel opening 11, that is, the shape of the area surrounded by the inner sidewall of the isolation structure 24 is similar to the shape of the sub-pixel 21. Further, the multiple sidewalls of the isolation structure 24 are respectively arranged in one-to-one correspondence with the side edges of the sub-pixel 21 surrounded by the isolation structure 24, and are arranged in parallel.

[0077] In the present application, an example of an isolation structure 24 surrounding a pixel opening 11 is mainly used for description. The spacing between the sidewalls of the isolation structure 24 and the sub-pixel 21 surrounded by the isolation structure 24 is equal.

[0078] In other embodiments, not all sidewalls of the isolation structures 24 have the same spacing from the sub-pixels 21 enclosed by the isolation structures 24 .

[0079] The side wall of the isolation structure 24 includes an isolation column 243 and an eave structure 244 disposed on the upper surface of the isolation column 243. The eave structure 244 shields the isolation column 243 and extends the isolation column 243 in a direction parallel to the pixel definition layer 10. In other words, the orthographic projection of the eave structure 244 on the pixel definition layer 10 covers the orthographic projection of the isolation column 243 on the pixel definition layer 10, and the orthographic projection area of ​​the eave structure 244 on the pixel definition layer 10 is larger than the orthographic projection area of ​​the isolation column 243 on the pixel definition layer 10. The structural design of the eave structure 244 makes it possible to adjust the evaporation angle through the edge of the eave structure 244, so that when evaporating the light-emitting layer 212 and the cathode 213 of the sub-pixel 21, the evaporation angle can be adjusted through the eave structure 244 to ensure that the cathode 213 can cover the light-emitting layer 212 and achieve good electrical connection with the isolation structure 24.

[0080] The eaves structure 244 is conductive or insulating. There are no restrictions on the material of the eaves structure 244, and the material is selected according to actual needs.

[0081] like Figure 3 As shown, the plurality of side walls of the isolation structure 24 are divided into a first side wall 241 and a second side wall 242 connected to each other. The thickness of the first side wall 241 is greater than the thickness of the second side wall 242. The electrical connection between the sub-pixel 21 and the isolation structure 24 is realized through the first side wall 241, and the electrical connection between the isolation structures 24 is realized through the first side wall 241, so as to realize the whole-surface mesh connection between the sub-pixels 21, which is beneficial to the uniformity of the cathode 213.

[0082] It should be noted that the first side wall 241 of the present application includes at least two side walls.

[0083] The isolation column 243 in the first side wall 241 is conductive and is used to electrically connect the sub-pixel 21 surrounded by the isolation structure 24. It can be understood that when the isolation column 243 is conductive, the isolation column 243 can not only electrically connect the sub-pixel 21, but also isolate the sub-pixel 21.

[0084] In this embodiment, the eave structure 244 is insulating, and the isolation column 243 of the second side wall 242 is conductive. It can be understood that when the isolation column 243 in the second side wall 242 is conductive, the entire isolation structure 24 is conductive, and the cathode 213 of the sub-pixel 21 has better mesh connectivity, which is more conducive to the uniformity of the cathode 213.

[0085] See also Figure 6 , Figure 6 yes Figure 3 A schematic diagram of the cross-sectional structure of another embodiment at FF.

[0086] In other embodiments, the isolation column 243 in the second side wall 242 may have an insulating property, and the isolation column 243 in the second side wall 242 and the pixel definition layer 10 are patterned using the same insulating material. When the isolation column 243 in the second side wall 242 has an insulating property, the isolation column 243 only serves to isolate the sub-pixel 21, and does not serve to electrically connect the cathode 213 of the sub-pixel 21. Figure 6 As shown, the insulating isolation column 243 and the pixel definition layer 10 are made of the same insulating material patterned shape, which can simplify the preparation process of the isolation column 243.

[0087] The material of the isolation column 243 having conductivity or insulation is not limited here, and can be selected according to actual needs. When the isolation column 243 has insulation, the material of the isolation column 243 can be other insulating materials.

[0088] In the present application, the surfaces of all the isolation columns 243 on the side away from the pixel definition layer 10 are located in the same plane, so as to simplify the preparation process of the isolation columns 243 .

[0089] It should be understood that the sidewalls of the isolation structure 24 may also be other structures.

[0090] In each isolation structure 24, the first sidewall 241 includes at least a portion of the sidewall extending along the first direction X; and / or, at least a portion of the sidewall extending along the second direction Y. Further, in the pixel unit 20, the first sidewall 241 of at least one isolation structure 24 includes at least an inclined sidewall, that is, in each pixel unit 20, there must be an isolation structure 24 with a first sidewall 241 including an inclined sidewall. The sub-pixel 21 is electrically connected to the isolation structure 24 via the inclined sidewall; and / or, the sub-pixel 21 is electrically connected to the isolation structure 24 via the sidewall extending along the first direction X.

[0091] The extending directions of the oblique sidewalls intersect the first direction X and the second direction Y respectively, the first direction X is perpendicular to the second direction Y, and the extending directions of the oblique sidewalls, the first direction X and the second direction Y are located in the same plane.

[0092] Further, the first direction X is the long side direction of the evaporation source, and the second direction Y is the moving direction of the evaporation source.

[0093] Based on the existing evaporation technology, the present application utilizes the principle that the sidewalls extending along the first direction X can be electrically connected to the cathode 213 of the sub-pixel 21 enclosed by the isolation structure 24, and the oblique sidewalls extending in directions intersecting the first direction X and the second direction Y can also be electrically connected to the cathode 213 of the sub-pixel 21 enclosed by the isolation structure 24. When the area enclosed by the outer sidewall of the isolation structure 24 remains unchanged, the thickness of the first sidewall 241 is made greater than the thickness of the second sidewall 242, thereby increasing the area of ​​the area enclosed by the inner sidewall of the isolation structure 24, thereby improving the pixel aperture ratio.

[0094] Compared with the design of only keeping the thickness of the sidewall extending along the first direction X unchanged, the first sidewall 241 of the isolation structure 24 in a single pixel unit 20 in the present application may include more types of sidewalls and more arrangements of the isolation structure 24.

[0095] Each pixel unit 20 includes at least one pixel group 22. At least one sub-pixel 21 and an isolation structure 24 surrounding the sub-pixel 21 are combined to form a pixel group 22. Each pixel group 22 is in the shape of a hexagon. The hexagon is an axially symmetrical figure or a centrally symmetrical figure. The pixel group 22 includes a side extending along the first direction X or the second direction Y.

[0096] The pixel group 22 is set to be a hexagon, and the hexagon is an axisymmetric shape or a centrally symmetrical shape, so that the pixel units 20 can be arranged compactly, thereby improving the resolution of the display panel.

[0097] When the pixel unit 20 includes a pixel group 22 (see Fig.10 ), the pixel unit 20 is a hexagon. When the pixel unit 20 includes a plurality of pixel groups 22, the plurality of pixel groups 22 are arranged side by side and in contact along the first direction X or the second direction Y, and the sides of two adjacent pixel groups 22 are arranged parallel to each other, so that the pixel units 20 can be arranged compactly, thereby improving the resolution of the display panel.

[0098] In the present embodiment, in the pixel unit 20, the sides of two adjacent sub-pixels 21 are arranged parallel to each other. The pixel group 22 includes an oblique side and a side extending along the second direction Y. The extending directions of the oblique side intersect with the first direction X and the second direction Y respectively. The pixel unit 20 includes three sub-pixels 21 of different colors, and the three sub-pixels 21 of different colors are respectively a first sub-pixel 21A, a second sub-pixel 21B and a third sub-pixel 21C. The first sub-pixel 21A and the isolation structure 24 surrounding the first sub-pixel 21A are combined to form a first pixel group 22A. The second sub-pixel 21B, the isolation structure 24 surrounding the second sub-pixel 21B, the third sub-pixel 21C and the isolation structure 24 surrounding the third sub-pixel 21C are combined to form a second pixel group 22B. In the second pixel group 22B, the third sub-pixel 21C and the second sub-pixel 21B share the side wall of the isolation structure 24 extending along the first direction X, and are arranged flush in the second direction Y. The side walls extending along the second direction Y in two adjacent isolation structures 24 in the first direction X are overlapped in a direction perpendicular to the pixel definition layer 10 .

[0099] In the second pixel group 22B, the third sub-pixel 21C and the second sub-pixel 21B share the sidewall of the isolation structure 24 extending along the first direction X, and are flush with each other in the second direction Y. It can be understood that the sidewall of the isolation structure 24 surrounding the third sub-pixel 21C extending along the first direction X also serves as the sidewall of the isolation structure 24 surrounding the second sub-pixel 21B extending along the first direction X. In addition, a side edge of the second sub-pixel 21B away from the first sub-pixel 21A and a side edge of the third sub-pixel 21C away from the first sub-pixel 21A are located on the same straight line, and a side edge of the second sub-pixel 21B close to the first sub-pixel 21A and a side edge of the third sub-pixel 21C close to the first sub-pixel 21A are located on the same straight line.

[0100] The pixel group 22 in this embodiment is symmetrically arranged along the first direction X and symmetrically arranged along the second direction Y, and is also a centrally symmetrical pattern. The second sub-pixel 21B and the third sub-pixel 21C are both symmetrically arranged along the second direction Y.

[0101] Please refer to 2. Figures 7 to 10 , Figure 7 is a schematic structural diagram of a second embodiment of a pixel unit provided in the present application, Figure 8 is a schematic structural diagram of a third embodiment of a pixel unit provided in the present application, Fig. 9 is a schematic structural diagram of a fourth embodiment of a pixel unit provided in the present application, Fig.10 It is a structural schematic diagram of the fifth embodiment of the pixel unit provided in the present application.

[0102] In other embodiments, the pixel group 22 may be symmetrical only along the first direction X or the second direction Y (eg, Figure 7), or only a centrally symmetrical figure (such as Figure 8 and Fig. 9 ), or symmetrically along the first direction X and the second direction Y respectively (as shown in Fig.10 The sub-pixels 21 in the pixel group 22 may also be asymmetrical (eg Figure 8 and Fig. 9 shown).

[0103] Furthermore, the pixel units 20 are repeatedly and arranged side by side in the first direction X to form pixel unit rows 23, the pixel unit rows 23 are repeatedly arranged in the second direction Y, and two adjacent pixel unit rows 23 are staggered in the first direction X. That is, the structure of all pixel units 20 in the display panel is the same.

[0104] See also Figures 11 to 15 , Fig.11 is a schematic structural diagram of a second embodiment of a display panel provided by the present application, Fig.12 is a schematic structural diagram of a first embodiment of a first pixel unit and a second pixel unit provided in the present application, Fig.13 is a schematic structural diagram of a third embodiment of a display panel provided in the present application, Fig.14 is a schematic structural diagram of a second embodiment of a first pixel unit and a second pixel unit provided in the present application, Fig.15 It is a structural schematic diagram of the fourth embodiment of the display panel provided in the present application.

[0105] It should be understood that in other embodiments, such as Fig.11 As shown, the odd-numbered pixel unit rows 23 can be arranged in a first array, the even-numbered pixel unit rows 23 can be arranged in a second array, and the adjacent odd-numbered pixel unit rows 23 and even-numbered pixel unit rows 23 are staggered in the first direction X. In addition, the plurality of pixel units 20 can also be defined as a first pixel unit 20A and a second pixel unit 20B, respectively. The first pixel unit 20A is centrally symmetrical or axially symmetrical to form the second pixel unit 20B (such as Fig.12 and Fig.14 As shown, the first pixel units 20A are repeatedly arranged along the first direction X to form a first pixel unit row 23A, the second pixel units 20B are repeatedly arranged along the first direction X to form a second pixel unit row 23B, and the first pixel unit row 23A and the second pixel unit row 23B are alternately arranged along the second direction Y.

[0106] Further, in this embodiment, in each isolation structure 24 , the first sidewalls 241 include all oblique sidewalls. In the first direction X, adjacent first sidewalls 241 are arranged in contact and electrically connected. All sub-pixels 21 are electrically connected to the isolation structure 24 via the oblique sidewalls.

[0107] See also Fig.16 and Fig.17 , Fig.16 is a schematic structural diagram of a fifth embodiment of a display panel provided in the present application, Fig.17 Schematic diagram of the structure of the sixth embodiment of the pixel unit provided in the present application.

[0108] In other embodiments, in the second pixel group 22B, the first sidewall 241 of the isolation structure 24 further includes a sidewall extending along the first direction X. The first sub-pixel 21A is electrically connected to the isolation structure 24 via the oblique sidewall, and the second sub-pixel 21B and the third sub-pixel 21C are electrically connected to the isolation structure 24 via the sidewall extending along the first direction X, which can further enhance the good electrical connection between the sub-pixel 21 and the isolation structure 24 and reduce the load of the cathode 213.

[0109] See also Fig.18 and Fig.19 , Fig.18 is a schematic structural diagram of a sixth embodiment of a display panel provided in the present application, Fig.19 is a structural schematic diagram of the seventh embodiment of the pixel unit provided in the present application.

[0110] The sixth embodiment of the display panel provided by the present application is basically the same in structure as the first embodiment of the display panel provided by the present application, except that: in each isolation structure 24, the first side wall 241 includes a side wall and a part of the inclined side wall extending along the second direction Y. In the second direction Y, a plurality of first side walls 241 are arranged in contact with each other in pairs to form a side wall group 245, and the side wall group 245 is used to electrically connect two adjacent pixel groups 22 in the second direction Y. In the first direction X, the side wall groups 245 are arranged at intervals from each other.

[0111] In this embodiment, in each isolation structure 24, the first sidewall 241 includes a sidewall and a portion of an oblique sidewall extending along the second direction Y. In the second direction Y, a plurality of first sidewalls 241 are disposed in contact with each other in pairs to form a sidewall group 245, and the sidewall group 245 is used to electrically connect two adjacent pixel groups 22 in the second direction Y. In the first direction X, the sidewall groups 245 are spaced apart from each other. All sub-pixels 21 are electrically connected to the isolation structure 24 through the oblique sidewalls.

[0112] This embodiment can also improve the pixel aperture ratio.

[0113] See also Fig. 20 and Fig.21 , Fig. 20 is a schematic structural diagram of a seventh embodiment of a display panel provided in the present application, Fig.21 Schematic diagram of the structure of the eighth embodiment of the pixel unit provided in the present application.

[0114] In other embodiments, in the second pixel group 22B, the first sidewall 241 of the isolation structure 24 further includes a sidewall extending along the first direction X. The first sub-pixel 21A is electrically connected to the isolation structure 24 via the oblique sidewall. The second sub-pixel 21B is electrically connected to the isolation structure 24 via the oblique sidewall and the sidewall extending along the first direction X, respectively, which can further enhance the good electrical connection between the sub-pixel 21 and the isolation structure 24.

[0115] It should be noted that the arrangement of the sub-pixels 21 in the present application includes but is not limited to this, and the layout of the sidewalls included in the first sidewall 241 of the present application includes but is not limited to this.

[0116] The present application provides a display device, which includes the above-mentioned display panel.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] The above are only implementation methods of the present application, and are not intended to limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: include: a pixel definition layer having a plurality of pixel openings; Pixel units, each of the pixel units comprising: A plurality of sub-pixels are disposed in the pixel opening in a one-to-one correspondence; A plurality of isolation structures are provided, protruding from the pixel definition layer and surrounding the pixel opening; a plurality of side walls of each of the isolation structures are respectively defined as a first side wall and a second side wall; in a direction parallel to the pixel definition layer, the thickness of the first side wall is greater than the thickness of the second side wall; in each of the isolation structures, the first side wall comprises: At least a portion of the side wall is extended along the first direction; and / or, at least a portion of the sidewall extending along the second direction; Wherein, in the pixel unit, the first side wall of at least one of the isolation structures includes at least an oblique side wall; the extension direction of the oblique side wall intersects the first direction and the second direction respectively, the first direction is perpendicular to the second direction, and the extension direction of the oblique side wall, the first direction and the second direction are located in the same plane; The cathode of the sub-pixel is electrically connected to the isolation structure through the inclined sidewall; and / or the cathode of the sub-pixel is electrically connected to the isolation structure through the sidewall extending along the first direction.

2. The display panel according to claim 1, characterized in that: Each of the isolation structures surrounds one of the pixel openings; the plurality of side walls of the isolation structure are arranged one by one corresponding to the side edges of the sub-pixels surrounded by the isolation structures, and are arranged in parallel; The sub-pixel includes an anode, a light-emitting layer and a cathode which are stacked in sequence; the light-emitting layer and the cathode are sequentially evaporated on the upper surface of the anode through an evaporation source; the first direction is the long side direction of the evaporation source, and the second direction is the moving direction of the evaporation source.

3. The display panel according to claim 2, characterized in that: Each of the pixel units includes at least one pixel group; at least one sub-pixel and an isolation structure surrounding the sub-pixel form a pixel group; each of the pixel groups is in a hexagonal shape; the hexagon is an axially symmetrical figure or a centrally symmetrical figure; the pixel group includes a side extending along the first direction or the second direction; When the pixel unit includes a plurality of the pixel groups, the plurality of the pixel groups are arranged side by side and in contact with each other along the first direction or the second direction, and the sides of two adjacent pixel groups that are close to each other are arranged parallel to each other.

4. The display panel according to claim 3, characterized in that: The pixel units are repeatedly and arranged side by side in the first direction to form pixel unit rows, and the pixel unit rows are repeatedly arranged in the second direction; or, The plurality of pixel units are respectively defined as a first pixel unit and a second pixel unit; the first pixel units are centrally symmetrical or axially symmetrical to form the second pixel units, the first pixel units are repeatedly arranged along the first direction to form a first pixel unit row, the second pixel units are repeatedly arranged along the first direction to form a second pixel unit row, and the first pixel unit row and the second pixel unit row are alternately arranged along the second direction.

5. The display panel according to claim 3, characterized in that: In the pixel unit, the adjacent sides of two adjacent sub-pixels are arranged parallel to each other; The pixel group includes an oblique side and a side extending along the second direction; the extension direction of the oblique side is respectively intersected with the first direction and the second direction; the pixel unit includes three sub-pixels of different colors, and the three sub-pixels of different colors are respectively a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel and an isolation structure surrounding the first sub-pixel are combined to form a first pixel group; the second sub-pixel, the isolation structure surrounding the second sub-pixel, the third sub-pixel and the isolation structure surrounding the third sub-pixel are combined to form a second pixel group; in the second pixel group, the third sub-pixel shares the side wall of the isolation structure extending along the first direction with the second sub-pixel, and is flush with the second direction; the side walls extending along the second direction in two adjacent isolation structures in the first direction are overlapped in a direction perpendicular to the pixel definition layer.

6. The display panel according to claim 5, characterized in that: In each of the isolation structures, the first sidewall includes all of the inclined sidewalls; in the first direction, adjacent first sidewalls are arranged in contact and electrically connected; or, In each of the isolation structures, the first side wall includes a side wall extending along the second direction and a portion of the inclined side wall; in the second direction, a plurality of the first side walls are arranged in contact with each other in pairs to form a side wall group, and the side wall group is used to electrically connect two adjacent pixel groups in the second direction; in the first direction, the side wall groups are spaced apart from each other.

7. The display panel according to claim 6, characterized in that: In the second pixel group, the first sidewall of the isolation structure further includes a sidewall extending along the first direction.

8. The display panel according to claim 1, characterized in that: The side wall of the isolation structure includes an isolation column and an eaves structure arranged on the upper surface of the isolation column; the eaves structure covers the isolation column and extends the isolation column in a direction parallel to the pixel definition layer; the eaves structure is conductive or insulating; the isolation column in the first side wall is conductive and is used to be electrically connected to the sub-pixel surrounded by the isolation structure.

9. The display panel according to claim 8, characterized in that: The isolation column in the second side wall is conductive; or, The isolation column in the second side wall has an insulating property, and the isolation column in the second side wall and the pixel definition layer are patterned by using the same insulating material.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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