Pixel arrangement structure, display substrate, and display device

Abstract

To improve the resolution of a pixel arrangement structure and further improve display quality.SOLUTION: A pixel arrangement structure comprises a plurality of pixel groups (01), each pixel group (01) includes a first sub-pixel (111), a second sub-pixel (112), a third sub-pixel (113), and a fourth sub-pixel (114). In the pixel group (01), a line connecting the center (C2) of the second sub-pixel (112) and the center (C3) of the third sub-pixel (113) is a first line segment (LS1), the first sub-pixel (111) and the fourth sub-pixel (114) are located between the second sub-pixel (112) and the third sub-pixel (113) and are respectively provided at both sides of the first line segment (LS1), and a line connecting the center (C1) of the first sub-pixel (111) and the center (C4) of the fourth sub-pixel (114) is a second line segment (LS2) of which length is shorter than length of the first line segment (LS1).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] This patent application claims priority to Chinese Patent Application No. 201810137016.5, filed on February 9, 2018, the entire contents of which are incorporated herein by reference in their entirety.

[0002] The embodiments of the present disclosure relate to a pixel array structure, a display substrate and a display device. [Background technology]

[0003] With the continuous development of display technology, the requirements for the resolution of display devices are becoming higher and higher. Due to advantages such as high display quality, the application range of high-resolution display devices is also becoming wider and wider. Usually, the resolution of a display device can be increased by reducing the size of pixels and the spacing between pixels. However, the reduction of the size of pixels and the spacing between pixels requires higher and higher precision in the manufacturing process, which causes the manufacturing process of the display device to be more difficult and the manufacturing cost to be increased.

[0004] Meanwhile, Sub-Pixel Rendering (SPR) technology utilizes the difference in resolution of the human eye for sub-pixels of different colors. Unlike the usual three sub-pixels of red, green, and blue, SPR technology simply defines the mode of one pixel and shares sub-pixels of colors that are insensitive to resolution at a specific position between different pixels, thereby simulating and realizing the performance of the same pixel resolution with relatively fewer sub-pixels, thereby reducing the difficulty of the manufacturing process and reducing manufacturing costs. Summary of the Invention

[0005] The embodiments of the present disclosure provide a pixel array structure, a display substrate and a display device, which can improve the distribution uniformity of the sub-pixels of sensitive colors by adjusting the intervals of the sub-pixels of sensitive colors, thereby enhancing the visual resolution of the pixel array structure and improving the display quality of the pixel array structure.

[0006] At least one embodiment of the present disclosure provides a pixel array structure, the pixel array structure comprising a plurality of pixel groups, each pixel group including a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel, in which in the pixel group, a connecting line between a center of the second subpixel and a center of the third subpixel is a first line segment, the first subpixel and the fourth subpixel are located between the second subpixel and the third subpixel and are respectively disposed on both sides of the first line segment, and a connecting line between the center of the first subpixel and the center of the fourth subpixel is a second line segment whose length is shorter than that of the first line segment.

[0007] For example, the ratio of the length of the second line segment to the length of the first line segment is 3 / 4 or less.

[0008] For example, the second line segment and the first line segment bisect each other perpendicularly.

[0009] For example, the ratio of the length of the second line segment to the length of the first line segment is 3 / 8 or more.

[0010] For example, in the pixel group, the first sub-pixel and the fourth sub-pixel are both elongated, and the extension direction of the first sub-pixel does not overlap with the extension direction of the fourth sub-pixel.

[0011] For example, the angle between the extension direction of the first sub-pixel and the extension direction of the fourth sub-pixel is 70° to 100°.

[0012] For example, the first subpixel and the fourth subpixel are arranged symmetrically with respect to the first line segment, and / or the second subpixel and the third subpixel are arranged symmetrically with respect to the second line segment.

[0013] For example, the first line segment extends in a first direction, the second line segment extends in a second direction, the multiple pixel groups are arranged in an array to form multiple rows and multiple columns, the pixel groups in the even rows and the pixel groups in the odd rows are staggered, the length of the central connecting line between adjacent second and third sub-pixels in two adjacent pixel groups in the first direction is smaller than the length of the first line segment, and the length of the central connecting line between adjacent first and fourth sub-pixels in two adjacent pixel groups in the second direction in adjacent odd rows or adjacent even rows is larger than the length of the second line segment.

[0014] For example, the ratio of the length of the central connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction to the length of the first line segment is 1 / 2 or less, and / or the ratio of the length of the central connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction in adjacent odd rows or adjacent even rows to the length of the second line segment is 1 or more and 3 or less.

[0015] For example, an extension of the second line segment of each pixel group passes through the midpoint of the center connecting lines of two pixel groups that are adjacent to the pixel group in the second direction and are in the same row.

[0016] For example, in adjacent odd rows or adjacent even rows, the intersection of a central connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and a first line segment in a pixel group located between the two third subpixels is located between the center of the first line segment and the center of the second subpixel.

[0017] For example, in the same pixel group, the closest distance between the second subpixel and the first subpixel is L1, the closest distance between the second subpixel and the fourth subpixel is L2, the closest distance between the third subpixel and the first subpixel is L3, and the closest distance between the third subpixel and the fourth subpixel is L4, where L1=L2=L3=L4.

[0018] For example, the closest distances of the first subpixel or the fourth subpixel to the second subpixel and the third subpixel in a pixel group adjacent to it in the second direction and not located in the same row are L5 and L6, respectively, where L5=L6.

[0019] For example, in adjacent subpixels, each opposing side is approximately parallel or the included angle is less than 45°, and the adjacent subpixels include any adjacent two of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel.

[0020] For example, the first subpixel and the fourth subpixel are subpixels of the same color.

[0021] At least one embodiment of the present disclosure provides a display substrate comprising a pixel array structure according to at least one embodiment of the present disclosure.

[0022] At least one embodiment of the present disclosure provides a display device including a display substrate according to at least one embodiment of the present disclosure. [Brief description of the drawings]

[0023] In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments are briefly described below. It should be apparent that the drawings described below only relate to some embodiments of the present disclosure, but do not limit the present disclosure.

[0024] [Figure 1]FIG. 1 is a schematic diagram of a pixel array structure. [Diagram 2] FIG. 2 is a schematic diagram of a pixel array structure according to one embodiment of the present disclosure. [Figure 3A] FIG. 3A is a schematic diagram of a pixel array structure according to one embodiment of the present disclosure. [Figure 3B] FIG. 3B is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 3C] FIG. 3C is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic diagram of a pixel array structure according to one embodiment of the present disclosure. [Figure 5A] FIG. 5A is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 5B] FIG. 5B is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 6] FIG. 6 is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 7A] FIG. 7A is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 7B] FIG. 7B is a schematic diagram of a pixel array structure according to another embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic diagram of a pixel arrangement structure and driving lines and data lines of a display substrate according to another embodiment of the present disclosure. [Figure 9] FIG. 9 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. It is obvious that the described embodiments are only some of the embodiments of the present disclosure, and not all of the embodiments. Based on the described embodiments of the present disclosure, other embodiments that a person skilled in the art can think of without making creative efforts all belong to the scope of protection of the present disclosure.

[0026] Unless otherwise specified, technical or scientific terms used in this disclosure should have the common meaning understood by those skilled in the art. The terms "first", "second" and similar terms used in this disclosure do not indicate order, quantity or importance, but merely distinguish between different components. Similar terms such as "comprise" or "include" have the meaning that the element or item preceding the term covers the element or item listed after the term and its equivalents, but does not exclude other elements or items. Similar terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] Fig. 1 shows a schematic diagram of a pixel array structure. As shown in Fig. 1, the pixel array is a typical pentile array, in which one minimum repeating unit includes two green subpixels 0111, one red subpixel 0112, and one blue subpixel 0113, and the pixel array structure is evenly distributed, which is easy to realize a high PPI (Pixel Per Inch) display.

[0028] The inventors of the present application found that in the pixel array structure shown in Fig. 1, the distance between the two green subpixels 0111 in the smallest repeating unit is large, making it difficult to improve visual resolution and prone to color bleeding and graininess. Typically, in the smallest repeating unit in Fig. 1, the length of the center connecting line LS02 between the two green subpixels 0111 is approximately the same as the length of the connecting line LS01 connecting the center of the red subpixel 0112 and the center of the blue subpixel 0113 in the smallest repeating unit.

[0029] Even with the adoption of SPR technology, the production of high-resolution products requires a sub-pixel patterning process with high PPI (Pixel Per Inch), and is therefore still limited by the accuracy of the manufacturing process. Therefore, in order to facilitate mass production of high-resolution products, it is necessary to improve the pixel array structure and reduce the difficulty of the manufacturing process.

[0030] In order to manufacture a display device having a high resolution, it is necessary to reduce the size of pixels and the spacing between pixels. However, the reduction in the size of pixels and the spacing between pixels requires higher and higher precision in the manufacturing process, which results in increased difficulty in the manufacturing process of the display device and increased manufacturing costs. For example, when manufacturing an Active Matrix Organic Light-Emitting Diode (AMOLED) display device having a high resolution, due to limitations imposed by the process precision of Fine Metal Mask (FMM) technology, the manufacturing process of an Active Matrix Organic Light-Emitting Diode (AMOLED) display device having a high resolution (e.g., greater than 300 pixel pitch (PPI)) is difficult and the manufacturing cost is high. The quality of the pixel arrangement has a significant impact on the display effect, and a good pixel arrangement can improve the display quality of the screen, increase the aperture ratio, reduce color mixing, and reduce process difficulty.

[0031] As shown in FIG. 2, at least one embodiment of the present disclosure provides a pixel array structure with a plurality of pixel groups 01. Each pixel group 01 includes a first subpixel 111, a second subpixel 112, a third subpixel 113, and a fourth subpixel 114. In the pixel group 01, a connecting line between a center C2 of the second subpixel 112 and a center C3 of the third subpixel 113 is a first line segment LS1, and the first subpixel 111 and the fourth subpixel 114 are located between the second subpixel 112 and the third subpixel 113, respectively, on both sides of the first line segment LS1. A connecting line between the center C1 of the first subpixel 111 and the center C4 of the fourth subpixel 114 is a second line segment LS2, the length of which is smaller than that of the first line segment LS1. For example, in order to achieve a good effect of closely arranging the pixels, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 is less than or equal to 3 / 4.

[0032] According to the pixel arrangement structure according to at least one embodiment of the present disclosure, the distance between the first sub-pixel and the fourth sub-pixel in the same pixel group is shortened, so that on the one hand, the pixel arrangement can be made more compact, the risk of color mixing can be reduced, color bleeding can be improved, and the visual graininess can be improved. On the other hand, the spacing between the sub-pixels can be increased to facilitate manufacturing. Alternatively, the compactness of the pixel arrangement and the spacing between the sub-pixels can be simultaneously considered, and a balance can be struck between the two, so that the pixel arrangement can be made compact while the spacing between the sub-pixels (spacing of the pixel definition layers) can be increased to a certain extent, thereby simultaneously achieving the effects of reducing the risk of color mixing, improving color bleeding, improving the visual graininess, and increasing the spacing between the sub-pixels.

[0033] For example, but not limited to, the shape of each subpixel provided in the embodiments of the present disclosure may be defined by a pixel-defining layer. For example, each subpixel in the drawings is an actual light-emitting area. The specific shape of each subpixel can be set according to the manufacturing process. For example, the actual light-emitting area may be determined by the shape of at least one of an electrode, a light-emitting layer, and a pixel-defining layer. For example, when this pixel array structure is used in an OLED display substrate and the first subpixel and the fourth subpixel are the same color, the light-emitting layer patterns of the first subpixel and the fourth subpixel in the same pixel group may be formed by deposition through the same opening of a mask.

[0034] For example, the first subpixel 111 and the fourth subpixel 114 may be subpixels of colors sensitive to the human eye, such as a green subpixel, a yellow subpixel, and a white subpixel. For example, the areas of the first subpixel 111 and the fourth subpixel 114 are smaller than those of the second subpixel 112 and the third subpixel 113. For example, the area of ​​the first subpixel 111 is smaller than that of the second subpixel 112 and / or the area of ​​the first subpixel 111 is smaller than that of the third subpixel 113. Similarly, the fourth subpixel 114 may refer to the above description of the area of ​​the first subpixel 111. That is, the area of ​​the fourth subpixel 114 is smaller than that of the second subpixel 112 and / or the area of ​​the fourth subpixel 114 is smaller than that of the third subpixel 113.

[0035] According to the pixel array structure according to at least one embodiment of the present disclosure, by adjusting the spacing of the sensitive color sub-pixels at the visual position, the distribution uniformity of the sensitive color sub-pixels can be improved, thereby enhancing the visual resolution of the pixel array structure and improving the display quality.

[0036] The second subpixel 112 and the third subpixel 113 may be subpixels of a color that is insensitive to the human eye. For example, one of the second subpixel 112 and the third subpixel 113 may be a red subpixel and the other may be a blue subpixel, but is not limited thereto. In the embodiment of the present disclosure, the second subpixel 112 is a red subpixel and the third subpixel 113 is a blue subpixel is taken as an example. However, if the pixel array structure uses a red-green-blue (RGB) mode, the color that is sensitive to the human eye may be green.

[0037] 2, the first line segment LS1 extends in a first direction X, and the second line segment LS2 extends in a second direction Y. For example, the first direction X is perpendicular to the second direction Y. For example, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged with the first direction X as an axis of symmetry, so as to make the arrangement of the pixel structure more uniform. For example, the first sub-pixel 111 is arranged evenly with respect to the second sub-pixel 112 and the third sub-pixel 113 to maintain consistency, so as to make the arrangement of the pixel structure more uniform.

[0038] As shown in FIG. 2, according to the pixel array structure according to one or more embodiments of the present disclosure, the second line segment LS2 is perpendicular to the first line segment LS1, so that the pixel array is more uniform. For example, but not limited to, when the second line segment LS2 is on the perpendicular bisector of the first line segment LS1, the widths of the sub-pixels of each color in the first direction X may all be the same. This makes the distribution of the pixel structure more uniform, improves the screen display quality, and improves the problem of graininess in low PPI display.

[0039] As shown in FIG. 2, for ease of explanation, a number of square dotted frames are shown, each of which has a length of 1 / 2L, and four dotted frames can form a square with a side length of L. The dark rectangular dotted frame in FIG. 2 is a pixel group 01. The pixel group 01 may be a minimum repeating unit of the pixel array structure. For example, the pixel array structure can be obtained by shifting the minimum repeating unit in parallel and copying it. For example, the minimum repeating unit does not include a subunit that can be arranged to form a pixel structure by shifting horizontally and repeating it.

[0040] 2, the first line segment SL1 is perpendicular to the second line segment SL2 and bisects each other perpendicularly. The first line segment SL1 bisects the second line segment SL2 perpendicularly. The second line segment SL2 also bisects the first line segment SL1 perpendicularly. For example, in pixel group 01, the largest area surrounded by the connecting lines at the centers of the first subpixel 111, the second subpixel 112, the fourth subpixel 114, and the third subpixel 113 is a diamond, and the first line segment SL1 and the second line segment SL2 are diagonals of the diamond.

[0041] As shown in FIG. 2, in the pixel group 01, the distance between the center C1 of the first subpixel 111 and the center C4 of the fourth subpixel 114 may be 1 / 2L or more, for example, the distance may be in the range of 1 / 2L to L. For example, the first subpixel 111 and the fourth subpixel may adopt subpixels of the same color. When the first subpixel 111 and the fourth subpixel both adopt subpixels of the same color such as the first subpixel 111, the setting of the distance can avoid the occurrence of a situation in which the two adjacent first subpixels are difficult to distinguish because the distance between the adjacent first subpixels is close, and the two adjacent first subpixels are visually integrated by the human eye, and can further avoid the occurrence of graininess. Therefore, the pixel array structure can improve the distribution uniformity of the first subpixels, thereby increasing the visual resolution and further improving the display quality.

[0042] 2, the distance between the center C3 of the third subpixel 113 and the center C2 of the second subpixel 112 may be 4 / 3L. To make the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 equal to or less than 3 / 4, the distance between the third subpixel 113 and the second subpixel 112 in the same pixel group can be increased and / or the distance between the first subpixel 111 and the fourth subpixel 114 can be decreased under conditions permitted by the process.

[0043] As shown in FIG. 2, according to a pixel array structure according to one or more embodiments of the present disclosure, in order to obtain a closely-arranged pixel structure, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 may be 3 / 8 or more.

[0044] For example, as shown in FIG. 2, in one pixel group, the first subpixel 111 and the second subpixel 112 are subpixels with different colors and form a pixel P, and the third subpixel 113 and the fourth subpixel 114 are subpixels with different colors and form a pixel P, and it is necessary to use subpixels of other surrounding pixels to display a color. For example, the first subpixel 111 and the fourth subpixel 114 are green subpixels, the second subpixel 112 is a red subpixel, and the third subpixel 113 is a blue subpixel. For example, the red subpixel and the green subpixel form one pixel, and the blue subpixel and the green subpixel form one pixel. Here, the pixel P includes only two subpixels, and it is necessary to use subpixels of other surrounding pixels to display a color. Therefore, here, the pixel P may be referred to as a virtual pixel.

[0045] 3A shows a pixel array structure with the dashed lines shown in FIG. 2 removed. The dashed lines, centers, etc. given in the embodiments of the present disclosure are imaginary lines, imaginary centers shown for ease of explanation. For example, the center may be, but is not limited to, the center of gravity, the intersection of perpendicular bisectors of opposite sides, etc.

[0046] 3B illustrates a pixel array structure according to one or more embodiments of the present disclosure. In the same pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 both adopt the same color, such as the first sub-pixel 111. Since the sub-pixels of the same color have no color mixing problem, the light-emitting layer patterns of the first sub-pixel 111 and the fourth sub-pixel 114 in the same pixel group 01 may be deposited through the same opening of the mask, thereby facilitating the mask netting, reducing the netting pressure, and improving the netting quality.

[0047] As shown in Fig. 3B, because the first sub-pixels 111 in the same row have a low inclination, when the first sub-pixels 111 in the same row display a line together, the first sub-pixels 111 in the same row have a low inclination (dense dotted line in Fig. 3B) and a small variation range of the first sub-pixels in the adjacent pixel groups, so that the line interdigitates with the line displayed in the adjacent row due to a large variation range, making it difficult for the human eye to distinguish the two lines, and thus avoiding the situation of visually merging the two lines, so that the pixel array structure can improve the visual resolution.

[0048] 3C shows a pixel array structure according to one or more embodiments of the present disclosure. As shown in FIG. 3C, in each pixel group 01, the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color, and may include, for example, two kinds of pixel groups, in which the paired subpixels of the same color in one kind of pixel group are the first subpixels (e.g., green subpixels), and the paired subpixels of the same color in the other kind of pixel group are the fourth subpixels (e.g., white subpixels or yellow subpixels). The colors of the two subpixels located between the second and third subpixels in the diagonally adjacent pixel groups of each pixel group are different from the colors of the subpixels located between the second and third subpixels in the pixel group.

[0049] 4 illustrates a pixel array structure according to one or more embodiments of the present disclosure, and as shown in FIG. 4, a first line segment LS1 extends in a first direction X, and a length D1 of a central connecting line LS3 between adjacent second sub-pixels 112 and third sub-pixels 113 in two adjacent pixel groups 01 in the first direction X is smaller than the length of the first line segment LS1, so that the pixels can be closely arranged. In FIG. 4, the length of the first line segment LS1 is 4 / 3L, but is not limited thereto. For example, the length of the first line segment LS1 may be in the range of 11 / 9L to 13 / 9L.

[0050] For example, in order to arrange pixels as closely as possible, if permitted by process conditions, the ratio of the length D1 of the central connecting line LS3 between the centers of the second subpixel 112 and the third subpixel 113 adjacent to each other in two pixel groups 01 adjacent to each other in the first direction to the first line segment LS1 is 1 / 2 or less. Although the length of the distance D1 is 2 / 3L as an example in the description of FIG. 4, the length of the distance D1 may be in the range of 5 / 9L to 7 / 9L.

[0051] As shown in FIG. 4, according to a pixel arrangement structure according to one or more embodiments of the present disclosure, a plurality of pixel groups 01 are arranged in an array, and may include a plurality of rows and a plurality of columns, for example, a plurality of first pixel groups 011 in odd rows and a plurality of second pixel groups 012 in even rows. For example, the pixel groups in the even rows and the pixel groups in the odd rows are staggered. The second line segment LS2 extends in the second direction Y. For example, in order to closely arrange the pixels in the column direction, the length D2 of the central connecting line L14 between the first sub-pixel 111 and the fourth sub-pixel 114 adjacent to each other in the two adjacent pixel groups 01 in the second direction Y in the adjacent odd rows or the adjacent even rows is greater than the length of the second line segment LS2. For example, in adjacent odd rows or adjacent even rows, the ratio of the length D2 of the central connecting line L14 between adjacent first subpixel 111 and fourth subpixel 114 in two adjacent pixel groups 01 in the second direction Y to the length of the second line segment LS2 is greater than or equal to 1 and less than or equal to 3.

[0052] For example, in adjacent odd rows or adjacent even rows, the length D2 of the central connecting line L14 between the first subpixel 111 and the fourth subpixel 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2. This allows a pixel structure in which six pixel groups are closely arranged around one pixel group to be formed. The pixel groups in the odd rows and the pixel groups in the even rows are staggered. For example, in the first direction X, the pixel groups are staggered by half the length of the pixel groups in the first direction X, for example, the staggered length is L, but is not limited thereto. For example, in adjacent odd rows or adjacent even rows, the ratio of the length D2 of the central connecting line L14 between the first subpixel 111 and the fourth subpixel 114 in two adjacent pixel groups 01 in the second direction Y to the length of the second line segment LS2 is 1 or more and 3 or less.

[0053] 4, according to a pixel array structure according to one or more embodiments of the present disclosure, an extension line of the second line segment LS2 of each pixel group 01 passes through a midpoint C0 of a center connecting line LSC of two pixel groups 01 adjacent to the pixel group 01 in the second direction Y and in the same row. The center of each pixel group 01 is C1, and the connecting line of the centers C1 of the two adjacent pixel groups 01 is the center connecting line LSC. For example, the center C1 of a pixel group 01 may be the intersection point of the first line segment LS1 and the second line segment LS2.

[0054] For example, an extension of the second line segment LS2 of each first pixel group 011 passes through a center C5 of a central connecting line LS3 between adjacent third sub-pixels 113 and second sub-pixels 112 of two second pixel groups 012 that are adjacent to the first pixel group 011 and in the same row. For example, the center C5 and the center C0 may be the same point.

[0055] 4, according to the pixel arrangement structure according to one or more embodiments of the present disclosure, in adjacent odd rows or adjacent even rows, an intersection point IP1 between a center connecting line LS4 of two third subpixels 113 in two adjacent pixel groups 01 (two adjacent first pixel groups 011 or two adjacent second pixel groups 012) arranged in the second direction Y and a first line segment LS1 in the pixel group 01 located between the two third subpixels 113 is located between a center IP0 of the first line segment LS1 and a center C2 of the second subpixel 112. For example, the center IP0 of the first line segment LS1 may be the center C1 of the pixel group 01. For example, the intersection point IP1 is located at the midpoint of the connecting line between the center IP0 of the first line segment LS1 and the center C2 of the second subpixel 112.

[0056] For example, in adjacent odd rows, an intersection IP1 between a central connecting line LS4 of two third subpixels 113 of adjacent first pixel groups 011 in the same column and a first line segment LS1 of a second pixel group 012 adjacent to the third subpixels 113 is located between an intersection IP0 between the first line segment LS1 and the second line segment LS2 of the second pixel group 012 and the center C2 of the second subpixel 112. The third subpixel 113 in the above description can also be replaced with the second subpixel 112.

[0057] For example, in adjacent odd rows or adjacent even rows, an intersection point between a center connecting line of two second subpixels 112 in two adjacent pixel groups 01 (two adjacent first pixel groups 011 or two adjacent second pixel groups 012) arranged in the second direction Y and a first line segment LS1 in the pixel group 01 located between the two second subpixels 112 is located between a center IP0 of the first line segment LS1 and a center C3 of a third subpixel 113. For example, the intersection point is located at the midpoint of the connecting line between the center IP0 of the first line segment LS1 and the center C3 of the third subpixel 113.

[0058] As shown in FIG. 4, according to a pixel array structure according to one or more embodiments of the present disclosure, in the same pixel group, the closest distance between the second subpixel 112 and the first subpixel 111 is L1, the closest distance between the second subpixel 112 and the first subpixel 111 is L1, the closest distance between the third subpixel 113 and the first subpixel 111 is L3, and the closest distance between the third subpixel 113 and the fourth subpixel 114 is L4, where L1=L2=L3=L4.

[0059] As shown in FIG. 4, according to the pixel array structure according to one or more embodiments of the present disclosure, the closest distances of the first subpixel 111 or the fourth subpixel 114 to the second subpixel 112 and the third subpixel 113 in the pixel group adjacent thereto in the second direction and not located in the same row are L5 and L6, respectively, where L5=L6.

[0060] For example, in one embodiment, L1=L2=L3=L4=L5=L6.

[0061] For example, for L1, L2, L3, L4, L5, and L6, refer to the notes on the minimum process distance d in Figures 7A and 7B. Each closest distance is the minimum distance between two subpixels. For example, in actual manufacturing, L1, L2, L3, L4, L5, and L6 can be as close as possible to the minimum process distance d.

[0062] As shown in FIG. 4 , according to a pixel array structure according to one or more embodiments of the present disclosure, in adjacent subpixels, the opposing sides are approximately parallel or the included angle is less than 45°, and the adjacent subpixels include any adjacent two of the first subpixel 111, the second subpixel 112, the third subpixel 113, and the fourth subpixel 114.

[0063] As shown in FIG. 5A, according to a pixel array structure according to one or more embodiments of the present disclosure, the first subpixel 111 and the fourth subpixel 114 are both elongated, and the extension direction A1 of the first subpixel 111 does not overlap with the extension direction A2 of the fourth subpixel 114. For example, the extension direction A1 of the first subpixel 111 crosses or has an included angle with the extension direction A2 of the fourth subpixel 114. For example, in each pixel group, the first subpixel 111 and the fourth subpixel 114 are arranged with the first direction X as an axis of symmetry, and are inclined at a certain angle. For example, the included angle between the inclination angle and the first direction X is in the range of 30° to 50°, and further, for example, the included angle is 45°, but is not limited thereto. For example, the extension direction A1 of the first subpixel 111 may be in the long axis direction of the first subpixel 111, but is not limited thereto. For example, the extension direction A2 of the fourth subpixel 114 may be the long axis direction of the fourth subpixel 114, but is not limited to this.

[0064] 5A , according to a pixel arrangement structure according to one or more embodiments of the present disclosure, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged symmetrically with respect to the first line segment LS1. For example, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged asymmetrically with respect to the second line segment LS2.

[0065] For example, the second sub-pixel 112 and the third sub-pixel 113 are arranged symmetrically with respect to the second line segment LS2, but are not limited to this.

[0066] For example, in the embodiments of the present disclosure, elongated means that the length in one direction is greater than the length in the other direction, or the size in one direction is greater than the size in the other direction. The elongated shape is not limited to a rectangle, but may be other shapes, such as a long hexagon, a long oval, a trapezoid, etc. In the embodiments of the present disclosure, the shape of each subpixel is not limited to a regular shape, but may be an irregular shape.

[0067] For example, the included angle between the extension direction A1 of the first subpixel 111 and the extension direction A2 of the fourth subpixel 114 is 70° to 100°, and may be 80° to 95°, or may be 90° (a right angle), so that the first subpixel 111 and the fourth subpixel 114 are formed with a larger area to increase the light-emitting area and facilitate netting during the manufacture of a mask for manufacturing a light-emitting layer pattern. For example, when it is a right angle, a deviation of several degrees above and below is allowed. For example, there may be a deviation of 5° above and below 90°.

[0068] FIG. 5B shows a pixel array structure according to one or more embodiments of the present disclosure, in which the extension direction A1 of the first subpixel 111 and the extension direction A2 of the fourth subpixel 114 form a right angle, and in the same pixel group 01, the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color.

[0069] FIG. 6 illustrates a pixel array structure according to one or more embodiments of the present disclosure. As illustrated in FIG. 6, the second subpixel 112 and the third subpixel 113 may be diamond-shaped or approximately diamond-shaped. The approximately diamond shape includes, but is not limited to, rounded diamond, chamfered diamond, etc. The diamond-shaped or approximately diamond-shaped subpixels are more favorable for closely arranging the pixels. For example, the first subpixel 111 may be symmetrically surrounded by the third subpixel 113 and the second subpixel 112, with both long sides of the first subpixel 111 facing the second subpixel 112 and both short sides facing the third subpixel 113, thereby maximizing the uniformity of the pixel array. The array of the first subpixels 111 is more uniform, which improves color bleeding to a certain extent, which is favorable for realizing high PPI, and maximizes the aperture ratio of the pixel.

[0070] The shape of each sub-pixel is not limited to the above and can be adjusted according to needs. Maximizing the area is the main principle when determining the shape of the sub-pixel.

[0071] In order to avoid color mixing, the spacing between subpixels of different colors must be larger than the minimum process spacing d of the patterning process, and considering the symmetry requirements of certain processes, for example, in FMM netting, symmetry of the hole-drilling pattern and distribution is desirable, the shapes of the first and fourth subpixels may be symmetrical pentagons with right angles at the base (see FIG. 2). As can be seen, the spacing between the second and third subpixels between adjacent pixel groups of symmetrically shaped subpixels is significantly larger than the spacing between other subpixels of different colors (the minimum process spacing d), i.e., there is available area in the design. If other processes that are not sensitive to symmetry (such as CF) are allowed or adopted in the FMM netting technology, the asymmetrical subpixel shape can be adopted to realize the maximization of the subpixel area.

[0072] 7A and 7B show pixel array structures according to one or more embodiments of the present disclosure. As shown in FIG. 7A and 7B, under the condition that asymmetric subpixel shapes are allowed to be adopted, depending on the minimum process distance d of the patterning process, the shapes of the second subpixel 112 and the third subpixel 113 may be right-angled trapezoids or right-angled trapezoids with acute angles truncated, thereby maximizing the area.

[0073] 7A, the shapes of the second subpixel 112 and the third subpixel 113 are both right-angled trapezoids, so that compared to the case where the shapes of the second subpixel 112 and the third subpixel 113 are both hexagonal (a hexagon formed by combining two symmetrical pentagons with right angles at the base), the acute corners 190 of the second subpixel 112 and the third subpixel 113 can further increase the areas of the second subpixel 112 and the third subpixel 113, thereby further improving the space utilization rate within the pixel group. This pixel array structure can improve the space utilization rate within the pixel group.

[0074] 7B, the second subpixel 112 and the third subpixel 113 are both isosceles trapezoids with acute angles cut off, so that when the process precision is constant, that is, when the distances between the first subpixel 111 and the second subpixel 112 and the third subpixel 113 are constant, the areas of the second subpixel 112 and the third subpixel 113 are increased, and the space utilization rate within the pixel group is improved.

[0075] According to a pixel array structure according to one or more embodiments of the present disclosure, the shapes of the second subpixel 112 and the third subpixel 113 include at least one of an isosceles trapezoid, a hexagon, and a rhombus, and the second subpixel 112 includes at least one of a pentagon, a rectangle, and an approximately rectangular shape, for example, but not limited to, a rounded rectangle.

[0076] At least one embodiment of the present disclosure provides a display substrate comprising any of the pixel array structures described above.

[0077] 8 illustrates a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 8, in a pixel group in the same row, the third sub-pixel 113 and the first sub-pixel 111 may be driven by a first driving line DL1, and the second sub-pixel 112 and the fourth sub-pixel 114 may be driven by a second driving line DL2. The first driving line DL1 extends along the E1 direction, and the second driving line DL2 extends along the E1 direction. For example, the E1 direction is parallel to the first direction X.

[0078] 8, the first sub-pixel 111 and the fourth sub-pixel 114 in the pixel group in the odd-numbered columns input a data signal through the first data line DT1, and the second sub-pixel 112 and the third sub-pixel 113 located between two adjacent first data lines DT1 input a data signal through the second data line DT2. For example, the data signal includes a voltage and / or a current. The first data line DT1 extends along the E2 direction, and the second data line DT2 also extends along the E2 direction, which is parallel to the second direction Y.

[0079] For example, one pixel unit group includes two pixel units, for example, the first sub-pixel 111 and the second sub-pixel 112 form one pixel unit, and the third sub-pixel 113 and the fourth sub-pixel 114 form another pixel unit. Each pixel unit can form a virtual pixel by sharing the adjacent third sub-pixel 111 or the fourth sub-pixel 114. Display is realized by sharing sub-pixels.

[0080] FIG. 9 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 9, the structure includes a base substrate 1001, a buffer layer 002, a first gate insulating layer 003, a second gate insulating layer 004, an interlayer dielectric layer 005, a planarization layer 006, and a pixel definition layer 007, which are arranged on the base substrate 1001 in sequence. As can be seen from FIG. 9, below the subpixel is a thin film transistor structure including a gate 302, an active layer 301, and a drain 303. The thin film transistor may be a thin film transistor in a pixel driving circuit, and the connection relationship between the thin film transistor and other components may be set according to the specific pixel circuit configuration, and detailed description is omitted here. In addition, a signal line 304 may be included in the same layer position as the drain 303, and the signal line 304 may be used as a signal line with a specific function, such as a data line or a gate line, according to the pixel circuit configuration. As can be seen from FIG. 9, the pixel definition layer 007 may include an opening for defining the subpixel. The anode 403 of the sub-pixel and the light-emitting layer 503 of the third sub-pixel are located in the opening of the pixel defining layer 007. Note that the structure of the display substrate is not limited to that shown in FIG.

[0081] For example, the anode 403 and the light-emitting layer 503 are in contact with each other, so that the contacting parts can drive the light-emitting layer to emit light, and therefore the contacting parts of the anode 403 and the light-emitting layer 503 are the effective parts capable of emitting light of the subpixel. Here, the anode 403 is used as a pixel electrode, so that different data voltages can be applied to different subpixels. However, in the embodiments of the present disclosure, the electrode used as the pixel electrode of the subpixel is not limited to the anode, and the cathode of the light-emitting diode may be used as the pixel electrode. For example, in the embodiments of the present disclosure, the shape of the subpixel may be the shape of the part where the pixel electrode and the light-emitting layer are in contact with each other. For example, for each subpixel, the area of ​​the pixel electrode may be slightly larger than the area of ​​the light-emitting layer, or the area of ​​the light-emitting layer may be slightly larger than the area of ​​the pixel electrode, and the embodiments of the present disclosure are not particularly limited thereto. For example, the light-emitting layer here may include an electroluminescent layer and other functional layers located on both sides of the electroluminescent layer, such as a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer. In some embodiments, the shape of the pixel may also be defined by a pixel definition layer. For example, a lower electrode (e.g., an anode) of a light-emitting diode may be disposed below a pixel-defining layer, the pixel-defining layer having an opening for defining a pixel, the opening exposing a portion of the lower electrode, and when a light-emitting layer is formed in the opening of the pixel-defining layer, the light-emitting layer contacts the lower electrode, thereby enabling the light-emitting layer to be driven to emit light in this portion. Thus, in this case, the opening of the pixel-defining layer defines the shape of a sub-pixel.

[0082] For example, the pixel circuit includes at least one transistor having a gate, an active layer, and a source / drain. In one example, a signal line is electrically connected to the source or drain of a corresponding transistor through a via penetrating an insulating layer below the signal line. In one example, the active layer of a transistor is formed by a polysilicon layer, and the polysilicon layer is conductive to form a source / drain on both sides of a channel region of the active layer. For example, the signal line is electrically connected to the conductive polysilicon source or drain through a via. For example, the transistor is a top-gate transistor, and a via for electrically connecting the signal line to the source or drain of the corresponding transistor penetrates a gate metal layer and a data metal layer, and a part of the metal pattern of the gate metal layer and the data metal layer may be used as a relay connector for the electrical connection through the via, but the embodiment of the present disclosure is not limited thereto.

[0083] For example, the shapes of various subpixels described in the embodiments of the present disclosure are all approximate, and it is not possible to ensure that the edges of the subpixels are strictly straight and the corners are strictly angular when forming the light-emitting layers or various electrode layers. For example, the light-emitting layers may be formed in a deposition process through a mask, so the corners may be rounded. In some cases, metal etching has a draft angle, so when the light-emitting layers of the subpixels are formed in a deposition process, one corner of the light-emitting layer may be removed.

[0084] For example, the shape of the sub-pixel is the shape of the orthogonal projection of the sub-pixel on the base substrate 1 .

[0085] At least one embodiment of the present disclosure provides a display device comprising any of the above display substrates, so that the resolution of the display device can be improved, and a display device with a truly high resolution can be provided, and the symmetry of the pixel array structure is better, so that the display effect of the display device is better.

[0086] For example, in some examples, the display device may be any product or component having a display function, such as a smartphone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like.

[0087] The following points will be explained. (1) The drawings of the embodiments of the present disclosure only show structures related to the embodiments of the present disclosure, and other structures may refer to conventional designs. (2) Features in the same and different embodiments of the present disclosure may be combined with each other unless inconsistent.

[0088] The above are merely specific embodiments of the present disclosure, but do not limit the scope of protection of the present disclosure, and all changes and replacements that a person skilled in the art can easily think of without departing from the technical scope of the present disclosure belong to the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be in accordance with the scope of protection of the claims.

[0089] [Section 1] A pixel array structure comprising a plurality of pixel groups, Each pixel group includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel; In the pixel group, a connecting line between a center of the second sub-pixel and a center of the third sub-pixel is a first line segment, and the first sub-pixel and the fourth sub-pixel are located between the second sub-pixel and the third sub-pixel and are provided on both sides of the first line segment, respectively; a connecting line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment, and a length of the second line segment is shorter than a length of the first line segment. [Section 2] 2. The pixel array structure of claim 1, wherein a ratio of the length of the second line segment to the length of the first line segment is less than or equal to 3 / 4. [Section 3] 3. The pixel array structure of claim 1 or 2, wherein the second line segment and the first line segment bisect each other perpendicularly. [Section 4] 4. The pixel array structure of any one of claims 1 to 3, wherein a ratio of a length of the second line segment to a length of the first line segment is 3 / 8 or more. [Section 5] 5. The pixel array structure of any one of claims 1 to 4, wherein in the pixel group, the first sub-pixel and the fourth sub-pixel are both elongated, and an extension direction of the first sub-pixel does not overlap with an extension direction of the fourth sub-pixel. [Section 6] 6. The pixel array structure according to item 5, wherein an included angle between an extension direction of the first sub-pixel and an extension direction of the fourth sub-pixel is 70° to 100°. [Section 7] 6. The pixel array structure of claim 5, wherein the first sub-pixel and the fourth sub-pixel are arranged symmetrically with respect to the first line segment, and / or the second sub-pixel and the third sub-pixel are arranged symmetrically with respect to the second line segment. [Section 8] The first line segment extends in a first direction, and the second line segment extends in a second direction, The pixel groups are arranged in an array to form a plurality of rows and a plurality of columns, and the pixel groups in the even rows are staggered from the pixel groups in the odd rows; a length of a central connecting line between adjacent second and third sub-pixels in two adjacent pixel groups in the first direction is smaller than a length of the first line segment; 8. The pixel array structure of any one of claims 1 to 7, wherein in adjacent odd rows or adjacent even rows, a length of a central connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction is longer than a length of the second line segment. [Section 9] The ratio of the length of the central connecting line between the second subpixel and the third subpixel in two adjacent pixel groups in the first direction to the length of the first line segment is 1 / 2 or less; and / or 9. The pixel array structure of claim 8, wherein in adjacent odd rows or adjacent even rows, the ratio of the length of a central connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction to the length of the second line segment is greater than or equal to 1 and less than or equal to 3. [Section 10] 9. The pixel array structure of claim 8, wherein an extension of the second line segment of each pixel group passes through a midpoint of a central connecting line of two pixel groups adjacent to the pixel group in the second direction and in the same row. [Section 11] 11. The pixel array structure of claim 10, wherein in adjacent odd rows or adjacent even rows, an intersection of a central connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and a first line segment in a pixel group located between the two third subpixels is located between a center of the first line segment and a center of the second subpixel. [Section 12] 9. The pixel array structure of item 8, wherein in the same pixel group, the closest distance between the second subpixel and the first subpixel is L1, the closest distance between the second subpixel and the fourth subpixel is L2, the closest distance between the third subpixel and the first subpixel is L3, and the closest distance between the third subpixel and the fourth subpixel is L4, where L1=L2=L3=L4. [Section 13] 13. The pixel array structure of claim 12, wherein the closest distances of the first subpixel or the fourth subpixel to the second subpixel and the third subpixel in a pixel group adjacent thereto in the second direction and not located in the same row are L5 and L6, respectively, where L5=L6. [Section 14] 14. The pixel array structure of claim 12 or 13, wherein adjacent subpixels have opposing sides that are substantially parallel or form an included angle of less than 45°, and the adjacent subpixels include any adjacent two of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel. [Section 15] 15. The pixel array structure of any one of items 1 to 14, wherein the first sub-pixel and the fourth sub-pixel are sub-pixels of the same color. [Section 16] 16. A display substrate comprising the pixel array structure according to any one of items 1 to 15. [Section 17] 17. A display device comprising a display substrate according to item 16.

Claims

1. A pixel array structure comprising a plurality of pixel groups; Each pixel group includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel; In the pixel group, a connecting line between a center of the second sub-pixel and a center of the third sub-pixel is a first line segment, and the first sub-pixel and the fourth sub-pixel are located between the second sub-pixel and the third sub-pixel and are provided on both sides of the first line segment, respectively; a connecting line between a center of the first sub-pixel and a center of the fourth sub-pixel is a second line segment; a length of the second line segment is smaller than a length of the first line segment, the first line segment extends in a first direction, and the second line segment extends in a second direction; the shape of the first subpixel includes a first body portion and a first convex portion whose dimension in the first direction is smaller than the dimension of the first body portion in the first direction, and the shape of the second subpixel includes a second body portion and a second convex portion whose dimension in the first direction is smaller than the dimension of the second body portion in the first direction, a pixel array structure in which, in the pixel group, a virtual straight line passing through the first body portion, away from a base side of the first convex portion, and extending in the first direction overlaps the second convex portion of the second subpixel, but does not overlap the second body portion of the second subpixel.

2. the shape of the third subpixel includes a third body portion and a third convex portion having a dimension in the first direction smaller than a dimension of the third body portion in the first direction, The pixel array structure of claim 1 , wherein in the pixel group, the imaginary straight line overlaps the third convex portion of the third sub-pixel but does not overlap the third body portion of the third sub-pixel.

3. 2. The pixel array structure of claim 1, wherein a plurality of the first subpixels are arranged in the second direction to form a first subpixel column, a plurality of the second subpixels are arranged in the second direction to form a second subpixel column, and a plurality of the third subpixels are arranged in the second direction to form a third subpixel column, the first subpixel column is located between one of the second subpixel columns and one of the third subpixel columns that are directly adjacent to each other, and the first subpixel column and the second subpixel column are spaced apart in the first direction, and the first subpixel column and the third subpixel column are spaced apart in the first direction.

4. The pixel array structure according to claim 1 , wherein a ratio of a length of the second line segment to a length of the first line segment is 3 / 4 or less.

5. The pixel array structure of claim 1 , wherein the second line segment and the first line segment bisect each other perpendicularly.

6. The pixel array structure according to claim 1 , wherein a ratio of a length of the second line segment to a length of the first line segment is equal to or greater than 3 / 8.

7. 2 . The pixel array structure according to claim 1 , wherein in the pixel group, the first sub-pixel and the fourth sub-pixel are both elongated, and an extension direction of the first sub-pixel does not overlap with an extension direction of the fourth sub-pixel.

8. 8. The pixel array structure as claimed in claim 7, wherein an included angle between an extension direction of the first sub-pixel and an extension direction of the fourth sub-pixel is in a range of 70° to 100°.

9. 8. The pixel array structure of claim 7, wherein the first sub-pixel and the fourth sub-pixel are arranged symmetrically with respect to the first line segment, and / or the second sub-pixel and the third sub-pixel are arranged symmetrically with respect to the second line segment.

10. The plurality of pixel groups are arranged in an array to form a plurality of rows and a plurality of columns, and the pixel groups in the even rows are staggered from the pixel groups in the odd rows; a length of a central connecting line between adjacent second and third sub-pixels in two adjacent pixel groups in the first direction is smaller than a length of the first line segment; 10. The pixel array structure of claim 1, wherein in adjacent odd rows or adjacent even rows, a length of a central connecting line between adjacent first and fourth sub-pixels in two adjacent pixel groups in the second direction is greater than a length of the second line segment.

11. a ratio of a length of a central connecting line between adjacent second and third sub-pixels in two adjacent pixel groups in the first direction to a length of the first line segment is equal to or less than 1 / 2; and / or 11. The pixel array structure of claim 10, wherein in adjacent odd rows or adjacent even rows, a ratio of a length of a central connecting line between adjacent first and fourth sub-pixels in two adjacent pixel groups in the second direction to a length of the second line segment is greater than or equal to 1 and less than or equal to 3.

12. The pixel array structure according to claim 10 , wherein an extension of the second line segment of each pixel group passes through a midpoint of a center connecting line of two pixel groups adjacent to the pixel group in the second direction and in the same row.

13. 13. The pixel array structure of claim 12, wherein in adjacent odd rows or adjacent even rows, an intersection of a central connecting line of two third sub-pixels in two adjacent pixel groups arranged in the second direction and a first line segment in a pixel group located between the two third sub-pixels is located between a center of the first line segment and a center of the second sub-pixel.

14. 11. The pixel array structure of claim 10, wherein in the same pixel group, the closest distance between the second subpixel and the first subpixel is L1, the closest distance between the second subpixel and the fourth subpixel is L2, the closest distance between the third subpixel and the first subpixel is L3, and the closest distance between the third subpixel and the fourth subpixel is L4, where L1=L2=L3=L4.

15. 15. The pixel array structure of claim 14, wherein the closest distances of the first subpixel or the fourth subpixel to the second subpixel and the third subpixel in a pixel group adjacent thereto in the second direction and not located in the same row are L5 and L6, respectively, where L5=L6.

16. 15. The pixel array structure of claim 14, wherein adjacent subpixels have opposing sides that are substantially parallel or form an included angle of less than 45 degrees, and the adjacent subpixels include any adjacent two of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel.

17. The pixel array structure of claim 1 , wherein the first sub-pixel and the fourth sub-pixel are sub-pixels of the same color.

18. A display substrate, comprising the pixel array structure according to any one of claims 1 to 9.

19. A display device comprising the display substrate according to claim 18.

Images