Display panel and display device

Abstract

The present application discloses a display panel and a display device, wherein the display panel includes a substrate; a plurality of pixel units are arranged on the substrate, the pixel units include a plurality of sub-pixels, a pixel definition layer is arranged on the substrate, and the positions of the plurality of sub-pixels are defined; an isolation structure is arranged between at least two adjacent sub-pixels, the isolation structure includes a main structure and a top structure, the main structure is arranged on the surface of the pixel definition layer away from the substrate, and the top structure is arranged on the surface of the main structure away from the substrate and blocks the main structure; the pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, the first sub-pixel includes a first part and a second part that are arranged to intersect and define four pixel areas; the second sub-pixel and the third sub-pixel are distributed along the circumference of the first sub-pixel and corresponding to the pixel area position. Through the above arrangement, the problems of small pixel aperture ratio, color edge and jagged display of the display panel are solved.

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] OLED (Organic Light-Emitting Diode) has advantages such as autonomous light emission, and the pixel arrangement of the display panel directly affects PPI (Pixels Per Inch), display brightness, service life and display effect.

[0003] At present, the light-emitting layer of mainstream OLED display panels on the market is usually prepared by an evaporation process, which requires the use of FMM (Fine Metal Mask). However, due to the limitations of the FMM used for evaporating R / G / B sub-pixels, the pixel arrangement method will be restricted, and the shape of the pixels and the distance between pixels are both limited, resulting in a small pixel aperture ratio and the display effect of the display panel will produce color fringing and jagged conditions. Summary of the invention

[0004] The present application mainly provides a display panel and a display device to solve the problems of small pixel aperture ratio of the display panel and color fringing and jagged display effects in the prior art.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a display panel, comprising:

[0006] substrate;

[0007] A plurality of pixel units are arranged on the substrate; each of the pixel units comprises a plurality of sub-pixels spaced from each other; each of the sub-pixels comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the substrate;

[0008] A pixel definition layer, disposed on the substrate, defining positions of a plurality of sub-pixels;

[0009] An isolation structure is provided between at least two adjacent sub-pixels, the isolation structure comprising a main structure and a top structure, the main structure being provided on a surface of the pixel definition layer away from the substrate, the top structure being provided on a surface of the main structure away from the substrate and shielding the main structure; a portion of the top structure extending from the surface of the main structure away from the substrate is an overhang;

[0010] The pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel that are spaced apart from each other; the first sub-pixel includes a first part and a second part, the first part and the second part are arranged to intersect and define four pixel areas; the second sub-pixel and the third sub-pixel are distributed along the circumference of the first sub-pixel and corresponding to the position of the pixel area; the first sub-pixel is shared by at least two sub-pixels adjacent to it.

[0011] In some embodiments, the isolation structure is disposed between any two adjacent sub-pixels of different colors; the isolation structure is not disposed between at least some adjacent two sub-pixels of the same color;

[0012] The intersection of the first part and the second part is the midpoint of the first part and the midpoint of the second part respectively, and the first sub-pixel is a centrally symmetrical figure.

[0013] In some embodiments, the pixel unit includes one first sub-pixel, two second sub-pixels and two third sub-pixels; four angles formed by the intersection of the first portion and the second portion are all 90 degrees, the first sub-pixel is in a cross shape, and the multiple sub-pixels in the pixel unit are distributed in a cross shape;

[0014] The second sub-pixels and the third sub-pixels are alternately arranged along the circumference of the first sub-pixel and corresponding to the positions of the four pixel regions, two of the second sub-pixels are located on the same diagonal line of the pixel unit, and two of the third sub-pixels are located on another diagonal line of the pixel unit; or,

[0015] The two second sub-pixels and the two third sub-pixels are sequentially arranged along the circumference of the first sub-pixel and corresponding to the positions of the four pixel regions, and one second sub-pixel and one third sub-pixel are arranged on each diagonal line of the pixel unit.

[0016] In some embodiments, the plurality of pixel units are distributed in an array; along a first direction, in the plurality of pixel units, first portions of two adjacent first sub-pixels are arranged flush with each other; along a second direction, in the plurality of pixel units, second portions of two adjacent first sub-pixels are arranged flush with each other; the second sub-pixels and the third sub-pixels are alternately arranged along the circumference of the first sub-pixel and at positions corresponding to the four pixel regions; the pixel unit includes a first diagonal line and a second diagonal line;

[0017] Along the first direction, among two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the first direction, the isolation structure is not provided between two adjacent pixel units; and / or,

[0018] Along the second direction, among two adjacent pixel units, the two second sub-pixels of one of the pixel units are located on the first diagonal line, and the two second sub-pixels of the other pixel unit are located on the second diagonal line; along the second direction, the isolation structure is not set between the two adjacent pixel units.

[0019] In some embodiments, along the first direction, of two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the first direction, no isolation structure is provided between two adjacent pixel units; in the first direction, the sizes of the plurality of isolation structures in different pixel units are all equal;

[0020] Along the second direction, the isolation structure is disposed between any two adjacent pixel units; in the second direction, sizes of the plurality of isolation structures are all equal.

[0021] In some embodiments, along the second direction, of two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the second direction, no isolation structure is provided between two adjacent pixel units; in the second direction, the sizes of the plurality of isolation structures in different pixel units are all equal;

[0022] Along the first direction, the isolation structure is disposed between any two adjacent pixel units; in the first direction, sizes of the plurality of isolation structures are all equal.

[0023] In some embodiments, the isolation structure is disposed between any two adjacent sub-pixels.

[0024] In some embodiments, the size of the first sub-pixel is larger than that of the second sub-pixel, the size of the second sub-pixel is larger than that of the third sub-pixel, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel.

[0025] In some embodiments, within each of the pixel units, a ratio of an area of ​​a projection of the isolation structure on the substrate to an area of ​​a projection of the plurality of sub-pixels on the substrate is 1:20-1:10.

[0026] In order to solve the above technical problem, another technical solution adopted by the present application is: to provide a display device, comprising any one of the display panels described above.

[0027] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a display panel and a display device, the display panel comprising: a substrate; a plurality of pixel units, arranged on the substrate, each pixel unit comprising a plurality of mutually spaced sub-pixels, each sub-pixel comprising an anode, a light-emitting layer and a cathode sequentially stacked on the substrate; a pixel definition layer, arranged on the substrate, defining the positions of the plurality of sub-pixels; an isolation structure is arranged between at least two adjacent sub-pixels, the isolation structure comprising a main structure and a top structure, the main structure being arranged on a surface of the pixel definition layer away from the substrate, the top structure being arranged on a surface of the main structure away from the substrate and shielding the main structure, and a portion of the top structure extending from the surface of the main structure away from the substrate is an overhang; the pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel spaced from each other; the first sub-pixel comprises a first part and a second part, the first part and the second part are arranged to intersect and define four pixel areas; the second sub-pixel and the third sub-pixel are distributed along the circumference of the first sub-pixel and corresponding to the position of the pixel area; the first sub-pixel is shared by at least two adjacent sub-pixels. Through the above arrangement, it is not necessary to use FMM to prepare the display panel, thereby solving the problems of small pixel aperture ratio and color edge and jagged display effect of the display panel in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0029] Figure 1 is a cross-sectional schematic diagram of a first embodiment of a display panel provided by the present application;

[0030] Figure 2 yes Figure 1 A schematic diagram of a top view of a display panel according to an embodiment of the present invention;

[0031] Figure 3 yes Figure 1 A schematic diagram of a top view structure of a pixel unit of an embodiment of a display panel provided;

[0032] Figure 4 is a schematic diagram of a top view of the structure of a first implementation mode of a second embodiment of a display panel provided in the present application;

[0033] Figure 5 yes Figure 4 A schematic diagram of the AA section of the display panel is provided;

[0034] Figure 6 is a schematic diagram of a top view of the structure of a second implementation mode of a second embodiment of a display panel provided in the present application;

[0035] Figure 7 yes Figure 6 A schematic diagram of a BB section of a display panel is provided;

[0036] Figure 8 It is a schematic diagram of the top structure of the second embodiment and the third implementation mode of the display panel provided in the present application.

[0037] Description of Figure Numbers:

[0038] Display panel 100; substrate 1; pixel unit 2; first sub-pixel 21; first part 211; second part 212; second sub-pixel 22; third sub-pixel 23; first diagonal line L1; second diagonal line L2; first direction A1; second direction A2; pixel definition layer 3; anode 4; light-emitting layer 5; cathode 6; isolation structure 7; main structure 71; top structure 72; overhang 721; filling layer 8; encapsulation layer 9; encapsulation layer 10. DETAILED DESCRIPTION

[0039] 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.

[0040] The terms "first", "second", "third" in the embodiments of the present 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 the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. 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 listed steps or units, 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.

[0041] 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.

[0042] See also Figures 1 to 3 , Figure 1 is a cross-sectional schematic diagram of a first embodiment of a display panel provided by the present application, Figure 2 yes Figure 1 A schematic diagram of a top view of a display panel according to an embodiment of the present invention is provided. Figure 3 yes Figure 1 A schematic top view of the structure of a pixel unit of an embodiment of a display panel is provided.

[0043] See also Figure 1The present application provides a display panel 100, which includes a substrate 1, a plurality of pixel units 2 and a pixel definition layer 3. The plurality of pixel units 2 are arranged on the substrate 1, each pixel unit 2 includes a plurality of sub-pixels spaced from each other, and each sub-pixel includes an anode 4, a light-emitting layer 5 and a cathode 6 stacked in sequence on the substrate 1. The pixel definition layer 3 is arranged on the substrate 1 to define the positions of the plurality of sub-pixels, so that the sub-pixels can be located in the area defined by the pixel definition layer 3. In the present application, an isolation structure 7 is arranged between at least part of two adjacent sub-pixels. Specifically, the isolation structure 7 includes a main structure 71 and a top structure 72. The main structure 71 is arranged on the surface of the pixel definition layer 3 away from the substrate 1, and the top structure 72 is arranged on the surface of the main structure 71 away from the substrate 1 and blocks the main structure 71; wherein the top structure 72 extends from the surface of the main structure 71 away from the substrate 1 to block the main structure 71, and the projection of the top structure 72 on the substrate 1 completely covers the projection of the main structure 71 on the substrate 1. The portion of the top structure 72 extending out of the main structure 71 and away from the surface of the substrate 1 is a hanging portion 721 , and the hanging portion 721 is suspended in the air.

[0044] Specifically, in the present application, the pixel unit 2 includes a first sub-pixel 21, a second sub-pixel 22, and a third sub-pixel 23 spaced from each other. The colors of the first sub-pixel 21, the second sub-pixel 22, and the third sub-pixel 23 are different, and can be any color such as red, green, blue, etc., respectively. Among them, the first sub-pixel 21 includes a first part 211 and a second part 212, and the first part 211 and the second part 212 are arranged to intersect and define four pixel areas, and the four pixel areas correspond to the position distribution of the four angles formed by the intersection of the first part 211 and the second part 212. The size of the four angles can be equal or unequal, wherein the size of each angle is within the range of greater than 0 degrees and less than 180 degrees. The second sub-pixel 22 and the third sub-pixel 23 are distributed along the circumference of the first sub-pixel 21 and correspond to the position distribution of the pixel area. Since the second sub-pixel 22 and the third sub-pixel 23 are distributed around the first sub-pixel 21 along the circumference of the first sub-pixel 21, the first sub-pixel 21 is shared by at least two sub-pixels adjacent to it.

[0045] It can be understood that in the present application, by setting an isolation structure 7 between at least part of two adjacent sub-pixels, and the isolation structure 7 is set to include a main structure 71 and a top structure 72, the top structure 72 shields the main structure 71 away from the surface of the substrate 1 and extends the main structure 71 to form an overhang 721, the isolation structure 7 can be used to directly evaporate and deposit at the position defined by the pixel definition layer 3 to form multiple sub-pixels, without the need to use FMM (Fine Metal Mask, fine metal mask), that is, the sub-pixels can be prepared by removing FMM, avoiding the restrictions on the pixel arrangement mode, pixel spacing and pixel shape when preparing sub-pixels using FMM, and effectively solving the problem of small pixel aperture ratio. Among them, when evaporating and depositing the light-emitting layer 5 and cathode 6 of the sub-pixel, the evaporation angle can be changed by the overhang 721 of the isolation structure 7, which is conducive to further improving the pixel aperture ratio, increasing the pixel opening, and thus extending the service life of the display panel 100.

[0046] In this embodiment, the main structure 71 of the isolation structure 7 is made of metal material, the top structure 72 is made of inorganic material, and the cathode 6 covers the light-emitting layer 5, which is conducive to the cathode 6 of the sub-pixel being in contact with and conducting with the main structure 71, so that the cathodes 6 of different sub-pixels are connected through the main structure 71 of the isolation structure 7. In other embodiments, the main structure 71 and the top structure 72 of the isolation structure 7 can also be made of other materials, and the isolation structure 7 can also be set as a three-layer structure, as long as the isolation structure 7 can be used to form the overhanging portion 721 to directly prepare and form a sub-pixel and realize the connection between the cathodes 6 of multiple sub-pixels.

[0047] Moreover, the first sub-pixel 21 of the pixel unit 2 is set to include a first part 211 and a second part 212, and the first part 211 and the second part 212 are intersected and defined to define four pixel areas. The second sub-pixel 22 and the third sub-pixel 23 are distributed along the circumference of the first sub-pixel 21 and corresponding to the pixel area, so that the sub-pixels of different colors in the pixel unit 2 can be distributed more evenly, which can effectively improve the color edge and jagged problems of the display effect of the display panel 100 and enhance the display effect.

[0048] In the present application, the angle formed by the intersection of the first part 211 and the second part 212 of the first sub-pixel 21 can be any angle within the range of greater than 0 degrees and less than 180 degrees, for example, the angle is any value such as 60 degrees, 80 degrees, 90 degrees, 120 degrees, etc. The number of the second sub-pixel 22 and the third sub-pixel 23 in each pixel unit 2 can be one, or two, respectively. The second sub-pixel 22 and the third sub-pixel 23 can be randomly distributed at the four angle positions formed by the first part 211 and the second part 212 of the first sub-pixel 21, that is, randomly distributed in the four pixel areas defined by the first part 211 and the second part 212. For example, each pixel unit 2 may include a first sub-pixel 21, a second sub-pixel 22 and a third sub-pixel 23, and the second sub-pixel 22 and the third sub-pixel 23 may be distributed at two diagonally arranged angles of the first sub-pixel 21; or, the pixel unit 2 includes a first sub-pixel 21, two second sub-pixels 22 and a third sub-pixel 23, the two second sub-pixels 22 are distributed at two diagonally arranged angles of the first sub-pixel 21, and the third sub-pixel 23 is distributed at the position of any of the remaining two angles, or, the pixel unit 2 includes a first sub-pixel 21, two second sub-pixels 22 and two third sub-pixels 23, the two second sub-pixels 22 and the two third sub-pixels 23 may be alternately arranged along the circumference of the first sub-pixel 21, or may be randomly distributed. The angle between the first part 211 and the second part 212 of the first sub-pixel 21, that is, the size of the pixel area, and the specific number and distribution position of the second sub-pixel 22 and the third sub-pixel 23 can be set as needed, and the present application does not limit this. The angle between the first part 211 and the second part 212 of the first sub-pixel 21 in the plurality of pixel units 2, and the number or arrangement of the first sub-pixel 21, the second sub-pixel 22 and the third sub-pixel 23 can be the same or different and can be designed as needed.

[0049] See also Figure 1 and Figure 2 In this embodiment, the display panel 100 includes a plurality of sub-pixels, and an isolation structure 7 is disposed between any two adjacent sub-pixels. Specifically, the display panel 100 includes a plurality of pixel units 2, and an isolation structure 7 is disposed between any two adjacent pixel units 2 and between the pixel unit 2 and the edge of the substrate 1, and an isolation structure 7 is also disposed between any two adjacent sub-pixels in each pixel unit 2.

[0050] In this embodiment, the plurality of pixel units 2 of the display panel 100 are arranged in an array, and the first sub-pixels 21, the second sub-pixels 22 and the third sub-pixels 23 in the plurality of pixel units 2 are arranged in the same manner. Figure 2As shown, each pixel unit 2 includes a first sub-pixel 21, two second sub-pixels 22 and two third sub-pixels 23. The first sub-pixel 21 includes a first portion 211 and a second portion 212. The first portion 211 and the second portion 212 intersect vertically. The four angles between the first portion 211 and the second portion 212 are all 90 degrees. The first sub-pixel 21 is in a cross shape. The multiple sub-pixels in the pixel unit 2 are distributed in a cross shape. One first sub-pixel 21 is shared by two second sub-pixels 22 and two third sub-pixels 23. Specifically, the intersection of the first portion 211 and the second portion 212 is the midpoint of the first portion 211 and the midpoint of the second portion 212, respectively. The two second sub-pixels 22 and the two third sub-pixels 23 correspond to the four angles, that is, the position distribution of the four pixel regions defined, respectively, so that the sub-pixels of different colors in the pixel unit 2 are distributed more evenly, which is conducive to improving the color edge and jagged problems of the display panel 100 and improving the display performance.

[0051] like Figure 2 As shown, in one embodiment, the shape of the pixel unit 2 is rectangular, the second sub-pixel 22 and the third sub-pixel 23 in each pixel unit 2 have the same shape, both are rectangular, the sizes of the second sub-pixel 22 and the third sub-pixel 23 are equal, each pixel unit 2 includes a first diagonal L1 and a second diagonal L2, the two second sub-pixels 22 in each pixel unit 2 are located on the first diagonal L1 of the pixel unit 2, and the two third sub-pixels 23 are located on the second diagonal L2 of the pixel unit 2, that is, in each pixel unit 2, the second sub-pixels 22 and the third sub-pixels 23 are alternately arranged along the circumference of the first sub-pixel 21 corresponding to the positions of the four pixel areas, which can make the distribution of sub-pixels of different colors in the pixel unit 2 more uniform, which is more conducive to improving the display problems of color fringing and jaggedness and improving display uniformity.

[0052] Specifically, the plurality of pixel units 2 are arranged in an array. Along the first direction A1, the first parts 211 of two adjacent first sub-pixels 21 in the plurality of pixel units 2 are arranged in parallel. Along the second direction A2, the second parts 212 of the first sub-pixels 21 of two adjacent pixel units 2 in the plurality of pixel units 2 are arranged in parallel. Figure 2 As shown, the first direction A1 may be the length direction of the display panel 100, and the second direction A2 may be the width direction of the display panel 100. It can be understood that the above arrangement may make the distribution of the multiple sub-pixels of the display panel 100 in the row direction and the column direction more uniform, which is more conducive to improving the display uniformity. In this embodiment, in the first direction A1, the sizes of the multiple isolation structures 7 are equal, and in the second direction A2, the sizes of the multiple isolation structures 7 are equal, so that the distribution of the sub-pixels and the isolation structures 7 in the pixel unit 2 is more uniform, so that the display effect is better.

[0053] In other embodiments, the second sub-pixels 22 and the third sub-pixels 23 may not be alternately arranged along the circumference of the first sub-pixel 21 at positions corresponding to the four pixel regions. For example, two second sub-pixels 22 may be arranged parallel to the first portion 211 of the first sub-pixel 21, and two third sub-pixels 23 may be arranged parallel to the first portion 211 of the first sub-pixel 21. A second sub-pixel 22 and a third sub-pixel 23 are arranged on each diagonal of each pixel unit 2. The first direction A1 may not be the length direction of the display panel 100, and the second direction A2 may not be the width direction of the display panel 100. The first direction A1 and the second direction A2 may be any directions. For example, the first direction A1 may be a direction parallel to one of the diagonals of the display panel 100, and the second direction A2 may be a direction parallel to another diagonal of the display panel 100. The sizes of the plurality of isolation structures 7 in the first direction A1 and the second direction A2 may also be unequal.

[0054] In this embodiment, the area ratio of the projection of the isolation structure 7 in each pixel unit 2 on the substrate 1 to the projection of the multiple sub-pixels on the substrate 1 is within the range of 1:20-1:10, which can avoid the size of the isolation structure 7 in the pixel unit 2 being too large, so that the size of the isolation structure 7 in the pixel unit 2 is within a smaller ratio range, ensuring that the size of each isolation structure 7 is small. Since the sub-pixels in each pixel unit 2 are directly limited by the frame of the isolation structure 7, the size of the isolation structure 7 is small, which can reduce the distance between two adjacent sub-pixels, thereby effectively improving the aperture ratio of the multiple sub-pixels in each pixel unit 2, increasing the opening of the sub-pixel, and better improving the problem of low pixel aperture ratio in the prior art. Moreover, by using the isolation structure 7 to limit the evaporation range of the sub-pixel, it is not necessary to use different FMMs to evaporate sub-pixels of different colors, which saves costs and avoids the problem of low sub-pixel aperture ratio caused by the alignment tolerance of the FMM. Specifically, in this embodiment, the pixel aperture ratio of the display panel 100 can be increased to 50%-60%, which can better improve the display effect and extend the service life of the display panel 100.

[0055] In other embodiments, the shapes of the second sub-pixel 22 and the third sub-pixel 23 may be any shape such as a triangle, a circle, a rhombus, an ellipse, a hexagon, an octagon, etc., the shapes of the second sub-pixel 22 and the third sub-pixel 23 may be the same or different, and the sizes of the second sub-pixel 22 and the third sub-pixel 23 may be equal or unequal. The arrangement of the first sub-pixel 21, the second sub-pixel 22, and the third sub-pixel 23 in the plurality of pixel units 2 may also be different. The first part 211 and the second part 212 of the first sub-pixel 21 in the pixel unit 2 may not be arranged vertically, the sizes of the four angles between the first part 211 and the second part 212 may not be equal, and the angle between the first part 211 and the second part 212 may be any value within the range of greater than 0 degrees and less than 90 degrees or greater than 90 degrees and less than 180 degrees. The intersection of the first part 211 and the second part 212 may not be the midpoint of the first part 211 and the midpoint of the second part 212. The first part 211 and the second part 212 may intersect at any position of the first part 211 or the second part 212, as long as the first part 211 and the second part 212 intersect to form four angles, that is, to define four pixel areas.

[0056] See also Figure 3 In one embodiment, the pixel unit 2 of the display panel 100 is rectangular, and each pixel unit 2 includes a first sub-pixel 21, two second sub-pixels 22 and two third sub-pixels 23. The first portion 211 and the second portion 212 of the first sub-pixel 21 intersect vertically, and the second sub-pixel 22 and the third sub-pixel 23 have the same shape, both of which are rectangular. The second sub-pixel 22 and the third sub-pixel 23 are alternately arranged along the circumference of the first sub-pixel 21 and at positions corresponding to the pixel region. In this embodiment, the second sub-pixel 22 is a red sub-pixel, the third sub-pixel 23 is a green sub-pixel, and the first sub-pixel 21 is a blue sub-pixel, wherein the size of the first sub-pixel 21 is larger than the size of the second sub-pixel 22, and the size of the second sub-pixel 22 is larger than the size of the third sub-pixel 23, that is, the size of the blue sub-pixel is larger than the size of the red sub-pixel, and the size of the red sub-pixel is larger than the size of the green sub-pixel. It can be understood that among the red, green and blue sub-pixels of the same size, the blue sub-pixel has the lowest luminous efficiency, followed by the red sub-pixel, and the green sub-pixel has the highest luminous efficiency. In this embodiment, by setting the sizes of the first sub-pixel 21, the second sub-pixel 22 and the third sub-pixel 23 in the above manner, the luminous efficiency of multiple sub-pixels of the pixel unit 2 can be basically consistent, so that the display brightness and display color of the display panel 100 are more balanced, and the display uniformity of the display panel 100 is improved. In other embodiments, the sizes of the first sub-pixel 21, the second sub-pixel 22 and the third sub-pixel 23 can also be equal.

[0057] In this embodiment, the display panel 100 is an OLED display panel 100. Figure 1 As shown, the side wall of the main structure 71 and the surface of the top structure 72 close to the main structure 71 are arranged at an angle, that is, the main structure 71 and the overhang 721 are arranged at an angle, and the inclination angle between the side wall of the main structure 71 and the surface of the overhang 721 close to the main structure 71 is less than 90 degrees. In other words, in the direction perpendicular to the substrate 1, the longitudinal section of the main structure 71 is a trapezoid, and the cross section of the main structure 71 gradually decreases in the direction close to the top structure 72, so that the cathodes 6 of the two sub-pixels located on both sides of the isolation structure 7 can be better connected and conducted with the side walls of the main structure 71 of the isolation structure 7, thereby realizing the mesh connection of the cathodes 6 of multiple sub-pixels of the display panel 100. In other embodiments, the main structure 71 of the isolation structure 7 can also be set to other shapes, for example, the longitudinal section of the main structure 71 is an inverted trapezoid.

[0058] In this embodiment, the display panel 100 further includes a filling layer 8, an encapsulation layer 10 and an encapsulation layer 9. The filling layer 8 is arranged on the side of the cathode 6 layer of the sub-pixel away from the substrate 1, and is arranged between two adjacent isolation structures 7 corresponding to the position of the sub-pixel. The filling layer 8 can fully fill the area of ​​the overhang 721 of the isolation structure 7 close to the substrate 1 to support the overhang 721. The encapsulation layer 10 is arranged on the side of the filling layer 8 away from the pixel definition layer 3 and at least covers the filling layer 8. The encapsulation layer 10 is used to protect the sub-pixel from etching during the process of preparing the display panel 100. The encapsulation layer 10 includes a non-conductive inorganic material. Specifically, the encapsulation layer 10 includes an inorganic material containing silicon, such as a SiNx inorganic material, where x is a non-zero natural number. The encapsulation layer 9 is located on the side of the isolation structure 7 away from the substrate 1 to encapsulate the film structures of the display panel 100 to prevent water and oxygen substances from entering the light-emitting layer 5 of the sub-pixel and affecting the display performance.

[0059] See also Figure 4 and Figure 8 , Figure 4 is a schematic diagram of a top view of the first implementation mode of the second embodiment of the display panel provided in the present application, Figure 5 yes Figure 4 A schematic diagram of the AA section of the display panel is provided, Figure 6 is a schematic diagram of a top view of the second embodiment of the display panel provided in the present application. Figure 7 yes Figure 6 A schematic diagram of the BB section of the display panel is provided. Figure 8 It is a schematic diagram of the top structure of the second embodiment and the third implementation mode of the display panel provided in the present application.

[0060] See also Figures 4 to 8The present application also provides another display panel 100, which is different from the first embodiment of the display panel 100 in that, in this embodiment, an isolation structure 7 is provided between any two adjacent sub-pixels of different colors, and no isolation structure 7 is provided between at least some of the adjacent sub-pixels of the same color. It can be understood that in this embodiment, no isolation structure 7 is provided between at least some of the adjacent sub-pixels of the same color, which can reduce the size of the pixel definition layer 3 between the two adjacent sub-pixels of the same color, making the distance between the two adjacent sub-pixels of the same color smaller, thereby increasing the opening of the sub-pixel, further improving the pixel aperture ratio, improving the display performance, and extending the service life of the display panel 100.

[0061] For details, see Figure 4 and Figure 5 In one embodiment, the second sub-pixels 22 and the third sub-pixels 23 are alternately arranged along the circumference of the first sub-pixel 21 and corresponding to the positions of the four pixel regions. In the first direction A1, the arrangement modes of the multiple sub-pixels in two adjacent pixel units 2 are different. Specifically, along the first direction A1, in two adjacent pixel units 2, the two second sub-pixels 22 of one pixel unit 2 are located on the first diagonal line L1, and the two second sub-pixels 22 of the other pixel unit 2 are located on the second diagonal line L2. That is, along the first direction A1, in two adjacent pixel units 2, the colors of the corresponding two adjacent sub-pixels are the same. Specifically, a second sub-pixel 22 of one pixel unit 2 located on the first diagonal line L1 is adjacent to a second sub-pixel 22 of the other pixel unit 2 located on the second diagonal line L2. Similarly, a third sub-pixel 23 of one pixel unit 2 is adjacent to a third sub-pixel 23 of the other pixel unit 2, and the first parts 211 of the first sub-pixels 21 of the two adjacent pixel units 2 are adjacent. Along the first direction A1 , no isolation structure 7 is disposed between two adjacent pixel units 2 , and in the first direction A1 , two adjacent sub-pixels of the same color are separated by the pixel definition layer 3 .

[0062] In this embodiment, if Figure 5As shown, since the arrangement of the multiple sub-pixels in the two adjacent pixel units 2 in the first direction A1 is different, the corresponding adjacent positions of the two adjacent pixel units 2 are the same sub-pixels, and the colors of the two adjacent sub-pixels of the two adjacent pixel units 2 are the same. Therefore, in the first direction A1, no isolation structure 7 may be provided between the two adjacent sub-pixels of the same color, and the other isolation structures 7 located around the two sub-pixels of the same color limit the evaporation range of the two sub-pixels, so that the two sub-pixels of the same color are formed by evaporation deposition, and part of the isolation structure 7 between the two adjacent sub-pixels of the same color in the first direction A1 is omitted, so that the size of the pixel definition layer 3 between the sub-pixels of the same color in the first direction A1 is reduced, so that the opening of the pixel in the first direction A1 is increased, and the pixel opening rate is improved, which is conducive to improving the display effect and extending the service life. In this embodiment, the first direction A1 is the length direction of the display panel 100, and the second direction A2 is the width direction of the display panel 100. No isolation structure 7 is provided between the two adjacent pixel units 2 in the same row. In the first direction A1, the sizes of the multiple isolation structures 7 in different pixel units 2 are equal. In other embodiments, the first direction A1 and the second direction A2 may be other directions.

[0063] In this embodiment, if Figure 4 As shown, along the second direction A2, an isolation structure 7 is provided between any two adjacent pixel units 2, and in the second direction A2, the sizes of the plurality of isolation structures 7 are equal. Specifically, in the second direction A2, the arrangement of the plurality of sub-pixels in the two adjacent pixel units 2 may be the same or different, and the colors of the two adjacent sub-pixels corresponding to the two adjacent pixel units 2 may be the same or different. That is to say, in this embodiment, only in the first direction A1, an isolation structure 7 is not provided between two adjacent sub-pixels of the same color, and an isolation structure 7 is provided between any two adjacent sub-pixels in the second direction A2, so as to improve the pixel aperture ratio in the first direction A1, increase the pixel aperture in the first direction A1, meet specific needs, and achieve special display effects.

[0064] See also Figure 6 and Figure 7In another embodiment, the second sub-pixels 22 and the third sub-pixels 23 are alternately arranged along the circumference of the first sub-pixel 21 and corresponding to the positions of the four pixel regions. Along the second direction A2, in two adjacent pixel units 2, the two second sub-pixels 22 of one pixel unit 2 are located on the first diagonal line L1, and the two second sub-pixels 22 of the other pixel unit 2 are located on the second diagonal line L2, that is, along the second direction A2, in two adjacent pixel units 2, the colors of the corresponding two adjacent sub-pixels are the same. Specifically, a second sub-pixel 22 of one pixel unit 2 located on the first diagonal line L1 is adjacent to a second sub-pixel 22 of the other pixel unit 2 located on the second diagonal line L2. Similarly, a third sub-pixel 23 of one pixel unit 2 is adjacent to a third sub-pixel 23 of the other pixel unit 2, and the second parts 212 of the first sub-pixels 21 of the two adjacent pixel units 2 are adjacent. Along the second direction A2, no isolation structure 7 is arranged between the two adjacent pixel units 2. In the second direction A2, two adjacent sub-pixels of the same color are separated by the pixel definition layer 3.

[0065] In this embodiment, if Figure 7 As shown, since the arrangement of the multiple sub-pixels in the two adjacent pixel units 2 in the second direction A2 is different, the corresponding adjacent positions of the two adjacent pixel units 2 are the same sub-pixel, and the colors of the two adjacent sub-pixels of the two adjacent pixel units 2 are the same. Therefore, in the second direction A2, no isolation structure 7 may be provided between the two adjacent sub-pixels of the same color, and the other isolation structures 7 located around the two sub-pixels of the same color limit the evaporation range of the two sub-pixels, so that the two sub-pixels of the same color are formed by evaporation deposition, and part of the isolation structure 7 between the two adjacent sub-pixels of the same color in the second direction A2 is omitted, so that in the second direction A2, the size of the pixel definition layer 3 between the sub-pixels of the same color is reduced, so that the opening of the pixel in the second direction A2 is increased, and the pixel opening rate is improved, which is conducive to improving the display effect and extending the service life. Similar to the first embodiment, in this embodiment, the first direction A1 is the length direction of the display panel 100, the second direction A2 is the width direction of the display panel 100, and the isolation structure 7 is not provided between the two adjacent pixel units 2 in the same column. In the second direction A2, the sizes of the multiple isolation structures 7 in different pixel units 2 are equal. In other embodiments, the first direction A1 and the second direction A2 may be other directions.

[0066] In this embodiment, if Figure 6As shown, along the first direction A1, an isolation structure 7 is provided between any two adjacent pixel units 2, and in the first direction A1, the sizes of the plurality of isolation structures 7 are equal. Specifically, in the first direction A1, the arrangement of the plurality of sub-pixels in the two adjacent pixel units 2 may be the same or different, and the colors of the two adjacent sub-pixels corresponding to the two adjacent pixel units 2 may be the same or different. That is to say, in this embodiment, only in the second direction A2, the isolation structure 7 is not provided between two adjacent sub-pixels of the same color, and the isolation structure 7 is provided between any two adjacent sub-pixels in the first direction A1, so as to improve the pixel aperture ratio in the second direction A2, increase the pixel aperture in the second direction A2, meet specific needs, and achieve special display effects.

[0067] See also Figure 8 In another embodiment, the second sub-pixel 22 and the third sub-pixel 23 are alternately arranged along the circumference of the first sub-pixel 21 and corresponding to the positions of the four pixel areas. Along the first direction A1, among two adjacent pixel units 2, the two second sub-pixels 22 of one pixel unit 2 are located on the first diagonal L1, and the two second sub-pixels 22 of the other pixel unit 2 are located on the second diagonal L2; at the same time, along the second direction A2, among two adjacent pixel units 2, the two second sub-pixels 22 of one pixel unit 2 are located on the first diagonal L1, and the two second sub-pixels 22 of the other pixel unit 2 are located on the second diagonal L2, that is, along the first direction A1 and the second direction A2, among two adjacent pixel units 2, the colors of the corresponding two adjacent sub-pixels are the same. In the first direction A1 and the second direction A2, no isolation structure 7 is arranged between two adjacent pixel units 2, and two adjacent sub-pixels of the same color are separated by the pixel definition layer 3. Since the isolation structure 7 between two adjacent sub-pixels of the same color is omitted, the size of the pixel definition layer 3 between two adjacent sub-pixels of the same color can be effectively reduced.

[0068] In this embodiment, in the first direction A1 and the second direction A2, the arrangement modes of the multiple sub-pixels in two adjacent pixel units 2 are different, so that the two adjacent pixel units 2 are sub-pixels of the same color at the corresponding adjacent positions along the first direction A1 and the second direction A2, and the colors of the corresponding two adjacent sub-pixels are the same. Therefore, no isolation structure 7 is set between the adjacent sub-pixels of the same color in the first direction A1 and the second direction A2 of the display panel 100, so that the size of the pixel definition layer 3 in the first direction A1 and the second direction A2 of the display panel 100 is reduced, the pixel aperture ratio is effectively increased, the overall pixel aperture ratio of the display panel 100 is improved, the overall pixel aperture is increased, the display effect is improved, and the service life is more conducive to extending. In this embodiment, the first direction A1 is the length direction of the display panel 100, and the second direction A2 is the width direction of the display panel 100. No isolation structure 7 is set between the two adjacent pixel units 2 in the same row and the same column, and the sizes of the multiple isolation structures 7 in different pixel units 2 in the first direction A1 are equal, and the sizes of the multiple isolation structures 7 in different pixel units 2 in the second direction A2 are equal. In other embodiments, the first direction A1 and the second direction A2 may be other directions.

[0069] In this embodiment, the rest of the structure and configuration of the display panel 100 are the same as those in the first embodiment of the display panel 100 and can achieve the same effects, which will not be described in detail herein.

[0070] In other embodiments, the multiple pixel units 2 of the display panel 100 may not be distributed in an array, and the multiple pixel units 2 may be randomly distributed. The sub-pixels in the pixel unit 2 may be of other numbers, and the structures of the multiple pixel units 2 and the arrangement of the sub-pixels may be the same or different. The shape of the sub-pixels may also be set to any shape such as a triangle, a circle, a diamond, an octagon, etc. No isolation structure 7 may be set between any two adjacent sub-pixels of the same color to increase the pixel opening, reduce the size of the pixel definition layer 3, increase the pixel opening ratio of the display panel 100, and thus improve the display effect. The specific structure can be designed as needed, and this application does not limit it.

[0071] The present application also provides a display device, which may include a display panel 100 and a cover plate and other structures. The display panel 100 may be the display panel 100 in any of the above-mentioned embodiments.

[0072] The above descriptions are merely embodiments of the present application and are not intended to limit the patent 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 applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, include: substrate; A plurality of pixel units are arranged on the substrate; each of the pixel units comprises a plurality of sub-pixels spaced from each other; each of the sub-pixels comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the substrate; A pixel definition layer, disposed on the substrate, defining positions of a plurality of sub-pixels; The invention is characterized in that an isolation structure is arranged between at least two adjacent sub-pixels, the isolation structure comprises a main structure and a top structure, the main structure is arranged on a surface of the pixel definition layer away from the substrate, the top structure is arranged on a surface of the main structure away from the substrate and covers the main structure; the portion of the top structure extending from the surface of the main structure away from the substrate is an overhang; The pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel spaced from each other; the first sub-pixel includes a first portion and a second portion, the first portion and the second portion are arranged to intersect and define four pixel regions; the second sub-pixel and the third sub-pixel are distributed along the circumference of the first sub-pixel and corresponding to the positions of the pixel regions; the first sub-pixel is shared by at least two sub-pixels adjacent thereto; The isolation structure is provided between any two adjacent sub-pixels of different colors; the isolation structure is not provided between at least some of the adjacent two sub-pixels of the same color, and the light-emitting layers of the two adjacent sub-pixels of the same color are disconnected; the size of the pixel definition layer between the two adjacent sub-pixels of the same color is smaller than the size of the pixel definition layer between the two adjacent sub-pixels of different colors; In each of the pixel units, the ratio of the area of ​​the projection of the isolation structure on the substrate to the area of ​​the projection of the plurality of sub-pixels on the substrate is 1:20-1:

10.

2. The display panel according to claim 1, It is characterized in that The intersection of the first part and the second part is the midpoint of the first part and the midpoint of the second part respectively, and the first sub-pixel is a centrally symmetrical figure.

3. The display panel according to claim 2, It is characterized in that The pixel unit includes one first sub-pixel, two second sub-pixels and two third sub-pixels; four angles formed by the intersection of the first portion and the second portion are all 90 degrees, the first sub-pixel is in a cross shape, and the multiple sub-pixels in the pixel unit are distributed in a cross shape; The second sub-pixels and the third sub-pixels are alternately arranged along the circumference of the first sub-pixel and corresponding to the positions of the four pixel regions, two of the second sub-pixels are located on the same diagonal line of the pixel unit, and two of the third sub-pixels are located on another diagonal line of the pixel unit; or, The two second sub-pixels and the two third sub-pixels are sequentially arranged along the circumference of the first sub-pixel and corresponding to the positions of the four pixel regions, and one second sub-pixel and one third sub-pixel are arranged on each diagonal line of the pixel unit.

4. The display panel according to claim 3, It is characterized in that The plurality of pixel units are arranged in an array; along a first direction, first parts of two adjacent first sub-pixels in the plurality of pixel units are arranged flush with each other; along a second direction, second parts of two adjacent first sub-pixels in the plurality of pixel units are arranged flush with each other; the second sub-pixels and the third sub-pixels are alternately arranged along the circumference of the first sub-pixel and at positions corresponding to the four pixel regions; the pixel unit includes a first diagonal line and a second diagonal line; Along the first direction, among two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the first direction, the isolation structure is not provided between two adjacent pixel units; and / or, Along the second direction, among two adjacent pixel units, the two second sub-pixels of one pixel unit are located on the first diagonal line, and the two second sub-pixels of the other pixel unit are located on the second diagonal line; along the second direction, the isolation structure is not set between the two adjacent pixel units.

5. The display panel according to claim 4, It is characterized in that Along the first direction, in two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the first direction, no isolation structure is provided between two adjacent pixel units; in the first direction, sizes of the plurality of isolation structures in different pixel units are all equal; Along the second direction, the isolation structure is disposed between any two adjacent pixel units; in the second direction, sizes of the plurality of isolation structures are all equal.

6. The display panel according to claim 4, It is characterized in that Along the second direction, among two adjacent pixel units, two second sub-pixels of one pixel unit are located on the first diagonal line, and two second sub-pixels of the other pixel unit are located on the second diagonal line; along the second direction, no isolation structure is provided between two adjacent pixel units; in the second direction, sizes of the plurality of isolation structures in different pixel units are all equal; Along the first direction, the isolation structure is disposed between any two adjacent pixel units; in the first direction, sizes of the plurality of isolation structures are all equal.

7. The display panel according to claim 1, It is characterized in that The size of the first sub-pixel is larger than that of the second sub-pixel, the size of the second sub-pixel is larger than that of the third sub-pixel, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel.

8. A display device, It is characterized in that Comprising the display panel as described in any one of claims 1-7.

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