Pixel array structure, display board, and display device

Abstract

The resolution of the pixel array structure is increased, further improving display quality. [Solution] The pixel array structure comprises a plurality of pixel groups (01), each pixel group (01) including a first subpixel (111), a second subpixel (112), a third subpixel (113), and a fourth subpixel (114). In the pixel group (01), the connecting line between the center (C2) of the second subpixel (112) and the center (C3) of the third subpixel (113) is the first line segment (LS1). The first subpixel (111) and the fourth subpixel (114) are located between the second subpixel (112) and the third subpixel (113), and are provided on both sides of the first line segment (LS1). The connecting line between the center (C1) of the first subpixel (111) and the center (C4) of the fourth subpixel (114) is the second line segment (LS2), whose length is shorter than the length of the first line segment (LS1).

Description

Technical Field

[0001] This patent application claims the priority of Chinese Patent Application No. 201810137016.5 filed on February 9, 2018, and all the content disclosed in the above Chinese patent application is incorporated herein by reference as part of the embodiments of the present disclosure.

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

Background Art

[0003] With the continuous development of display technology, the requirements for the resolution of display devices are increasing. Due to the advantages such as high display quality, the application range of high-resolution display devices is also expanding. Generally, the resolution of a display device can be increased by reducing the size of pixels and the distance between pixels. However, reducing the size of pixels and the distance between pixels requires higher and higher precision in the manufacturing process, which causes an increase in the difficulty of the manufacturing process and the manufacturing cost of the display device.

[0004] On the other hand, sub-pixel rendering (SPR) technology utilizes the difference in the resolution of the human eye for sub-pixels of different colors. Different from the normal three-color sub-pixels of red, green, and blue, it simply defines the mode of one pixel and shares the sub-pixels of colors with insensitive resolution at specific positions among different pixels, so that the performance of the same pixel resolution can be simulated and realized using relatively fewer sub-pixels, thereby reducing the difficulty of the manufacturing process and reducing the manufacturing cost.

Summary of the Invention

[0005] Embodiments of this disclosure provide a pixel array structure, a display substrate, and a display device. The pixel array structure can improve the uniformity of the distribution of sensitive color subpixels by adjusting the spacing between sensitive color subpixels, thereby increasing 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 comprising a plurality of pixel groups, each pixel group comprising a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel, wherein in the pixel group, the line connecting the center of the second subpixel and the 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 provided on either side of the first line segment, respectively, and the line connecting the center of the first subpixel and the center of the fourth subpixel is a second line segment whose length is shorter than the length of the first line segment.

[0007] For example, the ratio of the lengths of the second line segment to 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 lengths of the second line segment to the first line segment is 3 / 8 or greater.

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

[0011] For example, the angle between the extension direction of the first subpixel and the extension direction of the fourth subpixel 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 plurality of pixel groups are arranged in an array to form a plurality of rows and a plurality of columns, the pixel groups in even rows and the pixel groups in odd rows are offset from each other, the length of the center connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction is less than the length of the first line segment, and in adjacent odd rows or adjacent even rows, the length of the center connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction is greater than the length of the second line segment.

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

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

[0016] For example, in adjacent odd-numbered rows or adjacent even-numbered rows, the intersection point of the center-connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and the first line segment in the 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, so 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 the pixel group adjacent to it in the second direction but not located in the same row are L5 and L6, respectively, and L5 = L6.

[0019] For example, in adjacent subpixels, each opposite edge is approximately parallel or the included angle is less than 45°, and the adjacent subpixels include any two adjacent subpixels from the first subpixel, second subpixel, third subpixel, and 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 comprising a display substrate according to at least one embodiment of the present disclosure. [Brief explanation of the drawing]

[0023] To further clarify the technical concepts of the embodiments of this disclosure, the drawings of the embodiments will be briefly described below, and as will be apparent, the drawings described below relate only to some embodiments of this disclosure, but do not limit this disclosure.

[0024] [Figure 1]FIG. 1 is a schematic diagram of a pixel array structure. [Figure 2] FIG. 2 is a schematic diagram of a pixel array structure according to an embodiment of the present disclosure. [Figure 3A] FIG. 3A is a schematic diagram of a pixel array structure according to an 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 an 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 array structure of a display substrate and driving lines and data lines 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 INVENTION

[0025] In order to further clarify the objectives, technical solutions, and advantages of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. As is clear, the described embodiments are some of the embodiments of the present disclosure, not all of them. All other embodiments that can be conceived by those skilled in the art based on the described embodiments of the present disclosure without creative efforts belong to the protection scope of the present disclosure.

[0026] Unless otherwise specified, technical or scientific terms used in this disclosure should have the general 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 different components. Similar terms such as “equip” or “include” mean that the element or article preceding the term covers the elements or articles and their equivalents listed after the term, but do not exclude other elements or articles. Similar terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] Figure 1 shows a schematic diagram of the pixel array structure. As shown in Figure 1, the pixel array is a typical pentile array configuration, where one smallest repeating unit contains two green subpixels 0111, one red subpixel 0112, and one blue subpixel 0113. The pixel array structure is evenly distributed, making it easy to achieve high PPI (Pixels Per Inch) display.

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

[0029] Even with SPR technology, manufacturing high-resolution products still requires a high PPI (Pixels Per Inch) subpixel patterning process, and is therefore still limited by the precision of the manufacturing process. For this reason, 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] To manufacture high-resolution display devices, it is necessary to reduce the size of pixels and the spacing between pixels. However, reducing the size of pixels and the spacing between pixels demands increasingly higher precision in the manufacturing process, resulting in increased difficulty and cost in the manufacturing process of display devices. For example, when manufacturing high-resolution active matrix organic light-emitting diode (AMOLED) display devices, the manufacturing process is difficult and costly due to the limitations imposed by the process precision of fine metal mask (FMM) technology. The quality of the pixel arrangement has a significant impact on the display effect; a good pixel arrangement can improve the display quality of the screen, increase the aperture ratio, reduce color mixing, and lower the difficulty of the process.

[0031] As shown in Figure 2, at least one embodiment of the present disclosure provides a pixel array structure comprising 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 pixel group 01, the connecting line between the center C2 of the second subpixel 112 and the 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, and are provided on either side of the first line segment LS1. The 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 whose length is shorter than the length of the first line segment LS1. For example, to achieve the good effect of closely aligning pixels, the ratio of the lengths of the second line segment LS2 to the first line segment LS1 is 3 / 4 or less.

[0032] According to at least one embodiment of the pixel array structure of this disclosure, the distance between the first subpixel and the fourth subpixel in the same pixel group is shortened, thereby, on the one hand, making the pixel array more compact, reducing the risk of color mixing, improving color bleeding, and improving the visual graininess. On the other hand, the spacing between subpixels can be increased, making manufacturing easier. Alternatively, by considering both the compactness of the pixel array and the spacing between subpixels simultaneously and striking a balance between the two, the pixel array can be made compact while the spacing between subpixels (the spacing of the pixel definition layer) 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 subpixels.

[0033] For example, the shape of each subpixel given in the embodiments of this disclosure may, but is not limited to, a pixel-defining layer. For example, each subpixel in the drawing is an actual light-emitting region. The specific shape of each subpixel can be set according to the manufacturing process. For example, this actual light-emitting region may be determined by the shape of at least one of the electrodes, light-emitting layers, and pixel-defining layers. For example, if 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 the 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 green, yellow, and white subpixels. For example, the area of ​​the first subpixel 111 and the fourth subpixel 114 is smaller than that 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 the area of ​​the third subpixel 113. Similarly, the fourth subpixel 114 can 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 the area of ​​the third subpixel 113.

[0035] According to at least one embodiment of the pixel array structure of this disclosure, the uniformity of the distribution of sensitive color subpixels can be improved by adjusting the spacing of sensitive color subpixels at visual locations, thereby increasing the visual resolution of the pixel array structure and improving 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 a blue subpixel, but is not limited to this. Embodiments of this disclosure describe the case in which the second subpixel 112 is a red subpixel and the third subpixel 113 is a blue subpixel as an example. However, if the pixel array structure uses red-green-blue (RGB) mode, the color sensitive to the human eye may be green.

[0037] As shown in Figure 2, the first line segment LS1 extends in the first direction X, and the second line segment LS2 extends in the 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 subpixel 111 and the fourth subpixel 114 are arranged with the first direction X as the axis of symmetry to make the arrangement of the pixel structure more uniform. For example, the first subpixel 111 is evenly spaced relative to the second subpixel 112 and the third subpixel 113 to maintain consistency, thereby making the arrangement of the pixel structure more uniform.

[0038] As shown in Figure 2, according to one or more embodiments of the present disclosure, the pixel array structure is such that the second line segment LS2 is perpendicular to the first line segment LS1. This results in a more uniform pixel array. For example, if the second line segment LS2 lies on the perpendicular bisector of the first line segment LS1, the widths of the subpixels of each color in the first direction X may all be the same, but are not limited to this. This results in a more uniform distribution of the pixel structure, higher screen display quality, and improved display graininess at low PPIs.

[0039] As shown in Figure 2, for the sake of clarity, multiple dotted square frames are shown, each with a length of 1 / 2L, and four dotted frames can form a square with side length L. The dark rectangular dotted frame in Figure 2 represents pixel group 01. This pixel group 01 may be the smallest repeating unit of the pixel array structure. For example, the pixel array structure may be obtained by moving and copying the smallest repeating unit in parallel. For example, the smallest repeating unit may not contain subunits that can be arranged and form a pixel structure by moving and repeating horizontally.

[0040] As shown in Figure 2, the first line segment SL1 is perpendicular to the second line segment SL2 and bisects them 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 enclosed by the connecting lines of the centers of the first subpixel 111, the second subpixel 112, the fourth subpixel 114, and the third subpixel 113 is a rhombus, and the first line segment SL1 and the second line segment SL2 are the diagonals of this rhombus.

[0041] As shown in Figure 2, in 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 range of this distance may be 1 / 2L to L. For example, the first subpixel 111 and the fourth subpixel may be subpixels of the same color. When both the first subpixel 111 and the fourth subpixel are subpixels of the same color, such as the first subpixel 111, the distance setting makes it difficult to distinguish between two adjacent first subpixels because the distance between them is close, thus avoiding a situation where they appear as one visual unit to the human eye, and further avoiding any resulting graininess. Therefore, this pixel array structure can improve the uniformity of the distribution of first subpixels, thereby increasing the visual resolution and further improving the display quality.

[0042] As shown in Figure 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. In order to make the ratio of the lengths of the second line segment LS2 to the first line segment LS1 3 / 4 or less, 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 Figure 2, according to one or more embodiments of the present disclosure, in order to obtain a tightly arranged pixel structure, the ratio of the lengths of the second line segment LS2 to the first line segment LS1 may be 3 / 8 or more.

[0044] For example, as shown in Figure 2, in one pixel group, the first subpixel 111 and the second subpixel 112 are subpixels of different colors and form pixel P, and the third subpixel 113 and the fourth subpixel 114 are subpixels of different colors and form pixel P, and it is necessary to utilize the subpixels of other surrounding pixels to display 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, pixel P contains only two subpixels of different colors and is necessary to utilize the subpixels of other surrounding pixels to display color. Therefore, here, pixel P may be called a virtual pixel.

[0045] Figure 3A shows the pixel array structure with the dashed lines shown in Figure 2 removed. The dashed lines, centers, etc., given in the embodiments of this disclosure are virtual lines and virtual centers shown for the sake of clarity. For example, the center may be the centroid, the intersection of the perpendicular bisectors of opposite sides, etc., but is not limited to these.

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

[0047] As shown in Figure 3B, because the slope of the first subpixel 111 in the same row is low, when the first subpixels 111 belonging to the same row display a straight line together, the slope is low (dense dotted line in Figure 3B), and the variation range of the first subpixels in adjacent pixel groups is small. Therefore, the lines displayed in adjacent rows, which would have had a large variation range, interlock with each other, making it difficult to distinguish between the two lines and thus avoiding a situation where they appear as one visual line to the human eye. As a result, this pixel array structure can increase the visual resolution.

[0048] Figure 3C shows a pixel array structure according to one or more embodiments of the present disclosure. As shown in Figure 3C, in each pixel group 01, the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color, and for example, there may be two types of pixel groups, where the paired subpixels of the same color in one type of pixel group are the first subpixel (e.g., a green subpixel), and the paired subpixels of the same color in the other type of pixel group are the fourth subpixel (e.g., a white subpixel or a yellow subpixel). The color of two subpixels positioned as a pair between the second and third subpixels in an adjacent pixel group diagonally across each pixel group is different from the color of the subpixels positioned as a pair between the second and third subpixels in that pixel group.

[0049] Figure 4 shows a pixel array structure according to one or more embodiments of the present disclosure. As shown in Figure 4, the first line segment LS1 extends in a first direction X, and the length D1 of the central connecting line LS3 between adjacent second subpixels 112 and third subpixels 113 in two adjacent pixel groups 01 in the first direction X is smaller than the length of the first line segment LS1, thereby allowing the pixels to be arranged closely together. In Figure 4, the case where the length of the first line segment LS1 is 4 / 3L is described as an example, but the present invention is not limited thereto. For example, the length of the first line segment LS1 may range from 11 / 9L to 13 / 9L.

[0050] For example, to ensure the pixels are aligned as tightly as possible, if permitted by the process conditions, the length D1 of the center connecting line LS3 between the centers of adjacent second subpixels 112 and third subpixels 113 in two adjacent pixel groups 01 in the first direction is less than or equal to 1 / 2 of the length of the first line segment LS1. While Figure 4 illustrates the example where the length of distance D1 is 2 / 3L, it is not limited to this case. For example, the length of distance D1 may range from 5 / 9L to 7 / 9L.

[0051] As shown in Figure 4, according to one or more embodiments of the present disclosure, a plurality of pixel groups 01 are arranged in an array and 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 even rows and the pixel groups in odd rows are offset from each other. The second line segment LS2 extends in the second direction Y. For example, in order to closely arrange pixels in the column direction, in adjacent odd rows or adjacent even rows, the length D2 of the center connecting line L14 between adjacent first subpixels 111 and fourth subpixels 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2. For example, in adjacent odd-numbered rows or adjacent even-numbered rows, the ratio of the length D2 of the center 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 between 1 and 3.

[0052] For example, in adjacent odd-numbered rows or adjacent even-numbered rows, the length D2 of the central connecting line L14 between adjacent first subpixels 111 and fourth subpixels 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 for the formation of a pixel structure in which six pixel groups are tightly arranged around one pixel group. Pixel groups in odd-numbered rows and pixel groups in even-numbered rows are offset. For example, in the first direction X, they are offset by half the length of the pixel group in the first direction X, for example, the offset length is L, but not limited to this. For example, in adjacent odd-numbered rows or adjacent even-numbered rows, the ratio of the length D2 of the central connecting line L14 between adjacent first subpixels 111 and fourth subpixels 114 in two adjacent pixel groups 01 in the second direction Y to the length of the second line segment LS2 is between 1 and 3.

[0053] As shown in Figure 4, according to one or more embodiments of the present disclosure, the extension of the second line segment LS2 of each pixel group 01 passes through the midpoint C0 of the center connecting line LSC of two pixel groups 01 adjacent to and in the same row in the second direction Y. The center of each pixel group 01 is C1, and the connecting line between the centers C1 of 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 of the first line segment LS1 and the second line segment LS2.

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

[0055] As shown in Figure 4, according to one or more embodiments of the present disclosure, in adjacent odd-numbered rows or adjacent even-numbered rows, the intersection IP1 of the 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 a second direction Y, and the first line segment LS1 in the pixel group 01 located between the two third subpixels 113, is located between the center IP0 of the first line segment LS1 and the 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 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-numbered rows, the intersection IP1 between the center connecting line LS4 of two adjacent third subpixels 113 of the first pixel group 011 in the same column and the first line segment LS1 of the second pixel group 012 adjacent to the third subpixel 113 is located between the intersection IP0 of 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-numbered rows or adjacent even-numbered rows, the intersection point between the center connecting line of two second subpixels 112 in two adjacent pixel groups 01 (either two adjacent first pixel groups 011 or two adjacent second pixel groups 012) arranged in the second direction Y, and the first line segment LS1 in the pixel group 01 located between the two second subpixels 112, is located between the center IP0 of the first line segment LS1 and the center C3 of the 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 Figure 4, according to the pixel array structure of 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 third subpixel 113 and the first subpixel 111 is L3, the closest distance between the third subpixel 113 and the fourth subpixel 114 is L4, and L1=L2=L3=L4.

[0059] As shown in Figure 4, according to the pixel array structure of 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 to it in the second direction and not located in the same row are L5 and L6, respectively, and L5 = L6.

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

[0061] For example, for L1, L2, L3, L4, L5, and L6, refer to the annotations regarding the minimum process interval d in Figures 7A and 7B. Each nearest distance is the minimum distance between two subpixels. For example, when actually manufacturing, L1, L2, L3, L4, L5, and L6 can be brought as close as possible to the minimum process interval d.

[0062] As shown in Figure 4, according to one or more embodiments of the present disclosure, in adjacent subpixels, each opposing edge is substantially parallel or the included angle is less than 45°, and adjacent subpixels include any two adjacent subpixels from the first subpixel 111, the second subpixel 112, the third subpixel 113, and the fourth subpixel 114.

[0063] As shown in Figure 5A, according to one or more embodiments of the present disclosure, the pixel array structure is such that 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 intersects with or has an intersecting 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 a first direction X as the axis of symmetry and are inclined at a certain angle. For example, the range of the inclination angle and the intersecting angle of the first direction X is 30° to 50°, and furthermore, for example, the intersecting angle is 45°, but is not limited thereto. For example, the extension direction A1 of the first subpixel 111 may be 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 longitudinal axis direction of the fourth subpixel 114, but is not limited to this.

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

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

[0066] For example, in 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 an elongated hexagon, an elongated ellipse, or a trapezoid. In embodiments of the present disclosure, the shape of each subpixel is not limited to a regular shape, but may be irregular.

[0067] For example, the angle between the extending direction A1 of the first subpixel 111 and the extending direction A2 of the fourth subpixel 114 is 70° to 100°, and may also be 80° to 95°, or even 90° (right angle), thereby increasing the light-emitting area by forming the first subpixel 111 and the fourth subpixel 114 over a larger area, and facilitating netting during the manufacturing of the mask for producing the light-emitting layer pattern. For example, when the angle is right, a few degrees of deviation up and down is permitted. For example, there may be a deviation of 5° up and down from 90°.

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

[0069] Figure 6 shows a pixel array structure according to one or more embodiments of the present disclosure, and as shown in Figure 6, the second subpixel 112 and the third subpixel 113 may have a rhombus or substantially rhombus shape. A substantially rhombus includes, but is not limited to, a rounded rhombus, a chamfered rhombus, etc. The rhombus or substantially rhombus shape of the subpixels is more advantageous for a tighter arrangement of pixels. For example, the first subpixel 111 can be symmetrically surrounded around the third subpixel 113 and the second subpixel 112, with both long sides of the first subpixel 111 pointing toward the second subpixel 112 and both short sides pointing toward the third subpixel 113, thereby maximizing the uniformity of the pixel arrangement. The arrangement of the first subpixel 111 becomes more uniform, color bleeding is improved to a certain extent, which is advantageous for achieving a high PPI and maximizing the pixel aperture ratio.

[0070] The shape of each subpixel is not limited to those described above and can be adjusted according to the requirements. Maximizing the area is the main principle when determining the shape of the subpixels.

[0071] To avoid color mixing, the spacing between subpixels of different colors must be greater than the minimum process interval d of the patterning process. Considering the symmetry requirements of certain specific processes, such as the desirable symmetry of the perforation pattern and distribution in FMM netting, the shapes of the first and fourth subpixels may each be symmetrical pentagons with right angles at their base (see Figure 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 (minimum process interval d), meaning there is usable area for the design. If other processes that are not sensitive to symmetry (such as CF) are permitted or employed in FMM netting techniques, asymmetrical subpixel shapes can be adopted to maximize subpixel area.

[0072] Figures 7A and 7B show pixel array structures according to one or more embodiments of the present disclosure. As shown in Figures 7A and 7B, under conditions where the adoption of asymmetric subpixel shapes is permitted, the shapes of the second subpixel 112 and the third subpixel 113 may be right trapezoids or right trapezoids with sharp angles cut off, thereby maximizing the area, depending on the minimum process interval d of the patterning process.

[0073] As shown in Figure 7A, since the shapes of the second subpixel 112 and the third subpixel 113 are both right trapezoids, the acute angles 190 of the second subpixel 112 and the third subpixel 113 can further increase the area of ​​the second subpixel 112 and the third subpixel 113 compared to the case where the shapes of the second subpixel 112 and the third subpixel 113 are both hexagons (forming a hexagon by combining two symmetrical pentagons with right angles at the base), thereby further improving the spatial utilization rate within the pixel group. This pixel array structure can improve the spatial utilization rate within the pixel group.

[0074] As shown in Figure 7B, the shapes of the second subpixel 112 and the third subpixel 113 are both isosceles trapezoids with sharp angles cut off. As a result, when the process accuracy is constant, that is, when the distance between the first subpixel 111 and the second and third subpixels 112 and 113 is constant, the area of ​​the second subpixel 112 and the third subpixel 113 is increased, and the spatial utilization rate within the pixel group is increased.

[0075] 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 a substantially rectangular shape. A substantially rectangular shape includes, for example, a rounded-corner rectangle.

[0076] At least one embodiment of the present disclosure provides a display substrate having the above-described arbitrary pixel array structure.

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

[0078] As shown in Figure 8, the first subpixel 111 and the fourth subpixel 114 in the odd-numbered pixel groups receive data signals via the first data line DT1, while the second subpixel 112 and the third subpixel 113, located between two adjacent first data lines DT1, receive data signals via the second data line DT2. For example, the data signals include voltage and / or current. The first data line DT1 extends along the E2 direction, and the second data line DT2 also extends along the E2 direction, with the E2 direction being parallel to the second direction Y.

[0079] For example, one pixel unit group contains two pixel units; for instance, the first subpixel 111 and the second subpixel 112 form one pixel unit, and the third subpixel 113 and the fourth subpixel 114 form another pixel unit. Each pixel unit can form a virtual pixel by sharing the adjacent third subpixel 111 or fourth subpixel 114. Display is achieved by sharing subpixels.

[0080] Figure 9 is a cross-sectional view of a display substrate according to one embodiment of the present disclosure. As shown in Figure 9, the structure comprises a base substrate 1001 and 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 arranged in order on the base substrate 1001. As can be seen from Figure 9, below the subpixels there is a thin-film transistor structure comprising a gate 302, an active layer 301, and a drain 303. The thin-film transistor may be one 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 installation of the pixel circuit, and a detailed explanation is omitted here. Also, a signal line 304 may be included in the same layer 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, depending on the installation of the pixel circuit. As can be seen from Figure 9, the pixel definition layer 007 may include an aperture for defining subpixels. The anode 403 of the subpixel and the light-emitting layer 503 of the third subpixel are located in the aperture of the pixel definition layer 007. Note that the structure of the display substrate is not limited to that shown in Figure 9.

[0081] For example, the anode 403 and the light-emitting layer 503 are in contact with each other, so that the portion in contact with each other can drive the light-emitting layer to emit light, and thus the portion of the anode 403 and the light-emitting layer 503 in contact with each other is the effective portion of the subpixel that can emit light. Here, the anode 403 is used as a pixel electrode, so that different data voltages can be applied to different subpixels. However, in embodiments of the present disclosure, the electrode used as the pixel electrode of a subpixel is not limited to the anode, and the cathode of a light-emitting diode may be used as the pixel electrode. For example, in embodiments of the present disclosure, the shape of the subpixel may be the shape of the portion in contact with the pixel electrode and the light-emitting layer. 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 embodiments of the present disclosure are not particularly limited thereto. For example, the light-emitting layer here may comprise 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, the lower electrode (e.g., the anode) of a light-emitting diode may be located below a pixel definition layer, the pixel definition layer having an opening for defining pixels, the opening exposing a portion of the lower electrode, and when the light-emitting layer is formed in the opening of the pixel definition layer, the light-emitting layer comes into contact with the lower electrode, thereby driving the light-emitting layer to emit light in this portion. In this case, the opening of the pixel definition layer defines the shape of the subpixel.

[0082] For example, a pixel circuit comprises 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 the corresponding transistor via a via that penetrates the insulating layer beneath it. In one example, the active layer of the transistor is formed of a polysilicon layer, and on both sides of the channel region of the active layer, the polysilicon layer is made conductive to form the source and drain. For example, the signal line is electrically connected via a via to a conductive polysilicon source or drain. For example, the transistor is a top-gate transistor, and the via for electrically connecting the signal line to the source or drain of the corresponding transistor penetrates the gate metal layer and the data metal layer, and a portion of the metal patterns of the gate metal layer and the data metal layer may be used as a relay connector for the electrical connection via the via, but embodiments of the present disclosure are not limited thereto.

[0083] For example, the shapes of the various subpixels described in the embodiments of this 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 layer or the various electrode layers. For example, since the light-emitting layer may be formed by a vapor deposition process using a mask, its corners may be rounded. In some cases, metal etching has a draft angle, and therefore, when forming the light-emitting layer of the subpixels by a vapor deposition process, one corner of the light-emitting layer may be removed.

[0084] For example, the shape of a subpixel is the orthographic projection shape of the subpixel on the base substrate 1.

[0085] At least one embodiment of the present disclosure provides a display device comprising any of the above-described display substrates. Thus, the resolution of the display device can be increased, and furthermore, a display device having true high resolution can be provided. And, because the symmetry of the pixel array structure is better, the display effect of the display device is better.

[0086] For example, in some cases, the display device may be any product or component with display capabilities, such as a smartphone, tablet computer, television, display, laptop computer, digital photo frame, or navigator.

[0087] The following points will be explained. (1) The drawings of the embodiments of this disclosure show only the structures relating to the embodiments of this disclosure; other structures should be referred to in the usual design. (2) Features in the same and different embodiments of the present disclosure can be combined with each other, as long as they do not contradict each other.

[0088] The above are merely specific embodiments of the present disclosure, but do not limit the scope of protection of the present disclosure. Any changes or substitutions that a person skilled in the art could easily conceive without departing from the technical scope of the present disclosure are all within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be the same as the scope of protection of the claims.

[0089] [Section 1] A pixel array structure comprising multiple pixel groups, Each pixel group includes the first subpixel, second subpixel, third subpixel, and fourth subpixel. In the aforementioned pixel group, the line connecting the center of the second subpixel and the center of the third subpixel is the first line segment, and the first subpixel and the fourth subpixel are located between the second subpixel and the third subpixel and are provided on both sides of the first line segment, A pixel array structure characterized in that the connecting line between the center of the first subpixel and the center of the fourth subpixel is a second line segment, and the length of the second line segment is smaller than the length of the first line segment. [Section 2] The pixel array structure according to the first claim, characterized in that the ratio of the lengths of the second line segment to the first line segment is 3 / 4 or less. [Section 3] The pixel array structure according to the first or second paragraph, characterized in that the second line segment and the first line segment bisect each other perpendicularly. [Section 4] The pixel array structure according to any one of the first to third claims, characterized in that the ratio of the lengths of the second line segment to the first line segment is 3 / 8 or more. [Section 5] The pixel array structure according to any one of the first to fourth claims, characterized in that, in the pixel group, both the first subpixel and the fourth subpixel are elongated, and the extension direction of the first subpixel does not overlap with the extension direction of the fourth subpixel. [Section 6] The pixel array structure according to paragraph 5, characterized in that the angle between the extension direction of the first subpixel and the extension direction of the fourth subpixel is 70° to 100°. [Section 7] The pixel arrangement structure according to paragraph 5, characterized in that 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. [Section 8] The first line segment extends in the first direction, and the second line segment extends in the second direction. The aforementioned multiple pixel groups are arranged in an array, forming multiple rows and multiple columns, with even-numbered row pixel groups and odd-numbered row pixel groups being offset from each other. The length of the center-connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction is smaller than the length of the first line segment. A pixel array structure according to any one of the first to seventh claims, characterized in that, in adjacent odd-numbered rows or adjacent even-numbered rows, the length of the center connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction is greater than the length of the second line segment. [Section 9] The length of the center connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction is such that the ratio to the first line segment is 1 / 2 or less, and / or The pixel array structure according to paragraph 8, characterized in that, in adjacent odd-numbered rows or adjacent even-numbered rows, the length of the center connecting line between adjacent first subpixels and fourth subpixels in two adjacent pixel groups in the second direction is in a ratio of 1 or more and 3 or less to the length of the second line segment. [Section 10] The pixel array structure according to paragraph 8, characterized in that the extension of the second line segment of each pixel group passes through the midpoint of the center connecting lines of two pixel groups adjacent to and in the same row as the pixel group in the second direction. [Section 11] The pixel array structure according to paragraph 10, characterized in that, in adjacent odd-numbered rows or adjacent even-numbered rows, the intersection point of the center connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and the first line segment in the 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. [Section 12] The pixel array structure according to paragraph 8, characterized in that, within 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, the closest distance between the third subpixel and the fourth subpixel is L4, and L1=L2=L3=L4. [Section 13] The pixel array structure according to paragraph 12, characterized in that 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, and L5 = L6. [Section 14] The pixel array structure according to paragraph 12 or 13, characterized in that, in adjacent subpixels, each opposite edge is approximately parallel or the included angle is less than 45°, and the adjacent subpixels include any two adjacent subpixels from the first subpixel, second subpixel, third subpixel, and fourth subpixel. [Section 15] The pixel array structure according to any one of the first to fourteenth paragraphs, characterized in that the first subpixel and the fourth subpixel are subpixels of the same color. [Section 16] A display board comprising a pixel array structure as described in any one of items 1 to 15. [Section 17] A display device comprising a display board as described in paragraph 16.

Claims

1. A pixel array structure comprising multiple pixel groups, Each pixel group includes a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel. In the aforementioned pixel group, the connecting line between the center of the second subpixel and the center of the third subpixel is a first line segment, and the first subpixel and the fourth subpixel are located between the second subpixel and the third subpixel and are provided on both sides of the first line segment, respectively. The connecting line between the center of the first subpixel and the center of the fourth subpixel is the second line segment. The length of the second line segment is less than the 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 first virtual line extending along the first direction through the center of the first subpixel does not overlap with the second subpixel and the third subpixel, and neither the second virtual line extending along the first direction through the center of the second subpixel nor the third virtual line extending along the first direction through the center of the third subpixel overlaps with the first subpixel and the fourth subpixel. A pixel array structure in which a plurality of the first subpixels and a plurality of the fourth subpixels are arranged alternately along the second direction, wherein in the second direction, the minimum distance between the boundaries of adjacent first subpixels and fourth subpixels is smaller than the dimension of the third subpixel in the second direction, and the maximum distance between the boundaries of adjacent first subpixels and fourth subpixels is larger than the dimension of the third subpixel in the second direction.

2. The pixel array structure according to claim 1, wherein the minimum distance between adjacent first subpixels and fourth subpixels is greater than the dimension of the first subpixel or the fourth subpixel in the second direction.

3. The shape of the first subpixel includes a first tip, and the dimension of the first tip in the first direction is smaller than the dimension of the portion where the center of the first subpixel is located in the first direction. The pixel array structure according to claim 1, wherein the dimension of the portion where the center of the first subpixel is located in the first direction is the maximum dimension of the first subpixel in the first direction, and the dimension of the portion where the center of the first subpixel is located in the second direction is the maximum dimension of the first subpixel in the second direction.

4. The shape of the second subpixel includes a second tip, the dimension of the second tip in the first direction being smaller than the dimension of the portion where the center of the second subpixel is located in the first direction, and the shape of the third subpixel includes a third tip, the dimension of the third tip in the first direction being smaller than the dimension of the portion where the center of the third subpixel is located in the first direction. The pixel array structure according to claim 1, wherein a fourth virtual line extending along the first direction and overlapping with at least one of the second tip and the third tip passes through at least one of the first subpixel or the fourth subpixel.

5. The dimension of the portion where the center of the second subpixel is located in the first direction is the maximum dimension of the second subpixel in the first direction, and the dimension of the portion where the center of the second subpixel is located in the second direction is the maximum dimension of the second subpixel in the second direction. The pixel array structure according to claim 4, wherein the dimension of the portion where the center of the third subpixel is located in the first direction is the maximum dimension of the third subpixel in the first direction, and the dimension of the portion where the center of the third subpixel is located in the second direction is the maximum dimension of the third subpixel in the second direction.

6. In the first direction, the distance between the centers of adjacent second and third subpixels includes at least a first distance and a second distance, wherein the first distance is smaller than the second distance. In the second direction, the distance between the centers of adjacent first and fourth subpixels includes at least a third distance and a fourth distance, wherein the third distance is smaller than the fourth distance. When L is half the distance between the centers of two third subpixels adjacent to the same second subpixel in the first direction, or half the distance between the centers of two second subpixels adjacent to the same third subpixel in the first direction, The pixel array structure according to any one of claims 1 to 5, wherein the possible range of the first distance is from 1 / 2L to L, and the possible range of the second distance is from L to 3 / 2L.

7. A pixel array structure according to any one of claims 1 to 5, wherein the centers of a plurality of first subpixels are located on a fifth virtual line extending along the second direction, the centers of a plurality of second subpixels are located on a sixth virtual line extending along the second direction, the centers of a plurality of third subpixels are located on a seventh virtual line extending along the second direction, the fifth virtual line is located between the sixth virtual line and the seventh virtual line, and the first subpixel row and the second subpixel row are spaced apart in the first direction, and the first subpixel row and the third subpixel row are spaced apart in the first direction.

8. The pixel array structure according to any one of claims 1 to 5, wherein the ratio of the length of the second line segment to the length of the first line segment is 3 / 4 or less.

9. The pixel array structure according to any one of claims 1 to 5, wherein the second line segment and the first line segment bisect each other perpendicularly.

10. The pixel array structure according to any one of claims 1 to 5, wherein the ratio of the length of the second line segment to the length of the first line segment is 3 / 8 or more.

11. The aforementioned multiple pixel groups are arranged in an array, forming multiple rows and multiple columns, with even-numbered row pixel groups and odd-numbered row pixel groups being offset from each other. The length of the center-connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction is less than the length of the first line segment. The pixel array structure according to any one of claims 1 to 5, wherein in adjacent odd-numbered rows or adjacent even-numbered rows, the length of the center connecting line between adjacent first subpixels and fourth subpixels in two adjacent pixel groups in the second direction is greater than the length of the second line segment.

12. The ratio of the length of the center-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 pixel array structure according to claim 11, wherein in adjacent odd-numbered rows or adjacent even-numbered rows, the ratio of the length of the center connecting line between adjacent first subpixels and fourth subpixels in two adjacent pixel groups in the second direction to the length of the second line segment is 1 or more and 3 or less.

13. The pixel array structure according to claim 11, wherein the extension of the second line segment of each pixel group passes through the midpoint of the center connecting line between the second subpixel and the third subpixel in two pixel groups adjacent to the pixel group and in the same row in a second direction.

14. The pixel array structure according to claim 13, wherein in adjacent odd-numbered rows or adjacent even-numbered rows, the intersection point between the center connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and the first line segment in the 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.

15. The pixel array structure according to claim 1, 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, the closest distance between the third subpixel and the fourth subpixel is L4, and L1 = L2 = L3 = L4.

16. The pixel array structure according to claim 1, 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 to it in the second direction and not located in the same row are L5 and L6, respectively, and L5 = L6.

17. The pixel array structure according to any one of claims 1 to 5, wherein the first subpixel and the fourth subpixel are subpixels of the same color.

18. A display board comprising a pixel array structure according to any one of claims 1 to 5.

19. A display device comprising a display board as described in claim 18.

Images