Display substrate and display

Abstract

To provide a display substrate and a display.SOLUTION: A display substrate comprises first sub-pixels (111), second sub-pixels (112), and first spacers (0101). A connection line between a center (C1) of the first sub-pixel (111) and a center (C2) of the second sub-pixel (112) is a center connection line (CL1). The center connection line (CL1) is not perpendicular to a first direction (X). The first direction (X) is at least either one of a row direction or a column direction. The first spacer (0101) is installed between the first sub-pixel (111) and the second sub-pixel (112), and an extension direction (E01) of the first spacer (0101) located between the first sub-pixel (111) and the second sub-pixel (112) is not perpendicular to the first direction (X). Consequently, the display substrate can solve color fogging at different visual angles to improve display quality.SELECTED DRAWING: Figure 2A

Description

Technical Field

[0001] This patent application claims the priority of Chinese Patent Application No. 201810135948.6 filed on February 9, 2018, and the entire content disclosed in the above Chinese patent application is incorporated herein by reference as part of the embodiments of the present disclosure.

[0002] Embodiments of the present disclosure relate to 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 advantages such as high display quality, the application range of high-resolution display devices is also expanding. Usually, the resolution of a display device can be increased by reducing the size of pixels and the spacing between pixels. However, reducing the size of pixels and the spacing between pixels requires increasingly high precision in the manufacturing process, resulting in 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 three primary-color sub-pixels of normal red, green, and blue, it simply defines the pixel mode 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.

[0005] In a display device, spacers are usually installed to play a supporting role.

Summary of the Invention

Problems to be Solved by the Invention

[0006] Embodiments of the present disclosure provide a display substrate and a display device to reduce color bleeding at different viewing angles and improve display quality.

Means for Solving the Problems

[0007] At least one embodiment of the present disclosure provides a display substrate, comprising a first sub-pixel, a second sub-pixel, and a first spacer. A connecting line between the center of the first sub-pixel and the center of the second sub-pixel is a center connecting line, the center connecting line is not perpendicular to a first direction, and the first direction is at least one of a row direction or a column direction. The first spacer is installed between the first sub-pixel and the second sub-pixel, and an extending direction of the first spacer between the first sub-pixel and the second sub-pixel is not perpendicular to the first direction.

[0008] For example, the extending direction of the first spacer and the first direction have an included angle in the range of 40° to 50° or 130° to 140°.

[0009] For example, the included angle is 45° or 135°.

[0010] For example, the center connecting line is not parallel to the first direction.

[0011] For example, the display substrate includes a plurality of pixel groups each having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, and the first spacer is located between the first sub-pixel and the second sub-pixel belonging to different pixel groups.

[0012] For example, in the pixel group, a connecting line between the center of the second sub-pixel and the center of the third sub-pixel is a first line segment, the first sub-pixel and the fourth sub-pixel are located between the second sub-pixel and the third sub-pixel, and are respectively provided on both sides of the first line segment, and a connecting line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment having a length smaller than the length of the first line segment.

[0013] 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.

[0014] For example, the display substrate further includes a second spacer, the second spacer is located between adjacent pixel groups, and is installed between the fourth sub-pixel and the second sub-pixel of different pixel groups or between the fourth sub-pixel and the third sub-pixel of different pixel groups, and the extending direction of the second spacer between the fourth sub-pixel and the second sub-pixel or between the fourth sub-pixel and the third sub-pixel is not perpendicular to the first direction.

[0015] For example, the first spacer is installed between the first sub-pixel and the second sub-pixel of adjacent pixel groups, and / or between the first sub-pixel and the fourth sub-pixel of adjacent pixel groups.

[0016] For example, the first spacer and the second spacer located around the second sub-pixel or the fourth sub-pixel form a spacer pair, and the first spacer and the second spacer in the spacer pair are located on the same side of the second sub-pixel or the third sub-pixel.

[0017] For example, in the same pixel group, no spacer is installed between the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel.

[0018] For example, in the pixel group, both the first sub-pixel and the fourth sub-pixel are elongated, and the extending direction of the first sub-pixel does not overlap with the extending direction of the fourth sub-pixel.

[0019] For example, the included angle between the extending direction of the first sub-pixel and the extending direction of the fourth sub-pixel is 70° to 100°.

[0020] For example, 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.

[0021] 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 arranged in a staggered manner, the length of the central connection line between adjacent second sub-pixels and third sub-pixels in two adjacent pixel groups in the first direction is smaller than the length of the first line segment, and in adjacent odd rows or adjacent even rows, the length of the central connection line between adjacent first sub-pixels and fourth sub-pixels in two adjacent pixel groups in the second direction is larger than the length of the second line segment.

[0022] For example, the extension line of the second line segment of each pixel group passes through the midpoint of the central connection line of two pixel groups adjacent to and in the same row as the pixel group in the second direction.

[0023] For example, in adjacent odd rows or adjacent even rows, the intersection point of the central connection line of two third sub-pixels in two adjacent pixel groups arranged in the second direction and the first line segment in the pixel group located between the two third sub-pixels is located between the center of the first line segment and the center of the second sub-pixel.

[0024] For example, at least one of the first sub-pixel and the fourth sub-pixel is a sub-pixel of a color that is sensitive to the human eye.

[0025] For example, along the first direction, the widths of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are the same.

[0026] For example, the first line segment extends in the first direction, the second line segment extends in the second direction, the first spacer and the second spacer are strip-shaped, and the extending direction of the strip shape is different from both the first direction and the second direction.

[0027] For example, at least one of the first spacer and the second spacer does not overlap with the central connection line between the first sub-pixel and the third sub-pixel.

[0028] For example, the first line segment extends in the first direction, the second line segment extends in the second direction, and the orthogonal projection of the first spacer on the straight line along the first direction does not overlap or partially overlap with the orthogonal projection of at least one of the second sub-pixel and the third sub-pixel on the straight line along the first direction.

[0029] For example, the ratio of the total number of the first spacer and the second spacer to the number of sub-pixels is 0.3 to 1, and the sub-pixels include the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel.

[0030] For example, both the first spacer and the second spacer are transparent spacers.

[0031] At least one embodiment of the present disclosure further provides a display substrate, comprising a plurality of pixel groups, each pixel group including a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. In the pixel group, the connection line between the center of the second sub-pixel and the 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 respectively provided on both sides of the first line segment. The connection line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment having a length smaller than the length of the first line segment, and has a pixel array structure. The display substrate is A first spacer located between an adjacent first sub-pixel and a second sub-pixel in an adjacent pixel group, a second spacer located between an adjacent fourth sub-pixel and the second sub-pixel in an adjacent pixel group, and further includes at least one of a third spacer located between the first sub-pixel and the fourth sub-pixel in the pixel group.

[0032] For example, 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 and the pixel groups in the odd rows are arranged in a staggered manner.

[0033] For example, the pixel groups in the even rows and the pixel groups in the odd rows are shifted by half the length of the pixel group in the first direction, which is the row direction.

[0034] At least one embodiment of the present disclosure further provides a display device including a display substrate according to at least one embodiment of the present disclosure.

[0035] To more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and do not limit the present disclosure.

Brief Description of the Drawings

[0036]

Figure 1A

Figure 1B

Figure 1C

Figure 2A

Figure 2B

Figure 2C

Figure 2D

Figure 2E

Figure 3A

Figure 3B

Figure 3C

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7A

Figure 7B

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0037] To further clarify the objectives, technical solutions, and advantages of the embodiments of the present disclosure, hereinafter, with reference to the drawings of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the embodiments of the present disclosure described, all other embodiments that can be conceived by those skilled in the art without creative efforts belong to the protection scope of the present disclosure.

[0038] Unless otherwise specified, the technical terms or scientific terms used in the present disclosure should have the general meanings understood by those skilled in the art. The "first", "second", and similar terms used in the present disclosure do not indicate order, quantity, or importance, but are merely used to distinguish different components. Similar terms such as "comprising" or "including" have the meaning that the element or article before the term covers the elements or articles listed after the term and their equivalents, but do not exclude other elements or articles. Similar terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0039] FIG. 1A shows a display substrate. As shown in FIG. 1A, the display substrate has a pixel array structure, and the pixel array structure is in a typical pentile array mode. One minimum repeating unit includes two green sub-pixels 0111, one red sub-pixel 0112, and one blue sub-pixel 0113. The pixel array structure is evenly distributed, facilitating the realization of high PPI (Pixels Per Inch) display. In each row, the minimum repeating units are arranged along the first direction X, and the spacer 010 is installed between adjacent sub-pixels between the same minimum repeating unit and different minimum repeating units. The spacer 010 extends in a second direction Y perpendicular to the first direction X.

[0040] FIG. 1B shows a schematic cross-sectional view of the display substrate, which may be a cross-sectional view taken along the AB direction in FIG. 1A. As shown in FIG. 1B, the green sub-pixel 0111, the red sub-pixel 0112, the blue sub-pixel 0113, and the spacer 010 are installed on the base substrate 1101. When observing the display substrate at a specific angle, the degree of influence of the spacer on the emission luminance of each sub-pixel is different, and as a result, color crosstalk in the viewing field occurs. For example, when viewing the display substrate at different angles along the first direction X, the spacer 010 blocks a part of the light of the sub-pixel so that it does not enter the human eye, thereby causing color crosstalk at different viewing angles. That is, when viewing the same screen from the left and right sides of FIG. 1B, there is color crosstalk in the viewing field.

[0041] FIG. 1C shows a schematic diagram of viewing the display device at a specific viewing angle. FIG. 1C takes the case of viewing from the right side of the display device as an example. Since the spacer 010 blocks the light of some sub-pixels, when viewing the display device from the left side, the color of the same screen is different from the color when viewing from the right side.

[0042] FIG. 2A shows a display substrate according to at least one embodiment of the present disclosure. The display substrate includes a first sub-pixel 111, a second sub-pixel 112, and a first spacer 0101. The connecting line between the center C1 of the first sub-pixel 111 and the center C2 of the second sub-pixel 112 is the center connecting line CL1, and the center connecting line CL1 is not perpendicular to the first direction X, and the first direction X is at least one of the row direction or the column direction.

[0043] The first spacer 0101 is installed between the first sub-pixel 111 and the second sub-pixel 112, and the extending direction of the first spacer 0101 between the first sub-pixel 111 and the second sub-pixel 112 is not perpendicular to the first direction X.

[0044] For example, the first spacer 0101 extends between the first sub-pixel 111 and the second sub-pixel 112, and the extending direction E01 of the first spacer 0101 is not perpendicular to the first direction X. In the embodiments of the present disclosure, the case where the first direction X is the row direction will be taken as an example for explanation. The extending direction E01 of the first spacer 0101 is different from both the first direction and the second direction.

[0045] In the display substrate according to at least one embodiment of the present disclosure, when the arrangement method of the spacers is adjusted and the extending direction E01 of the first spacer 0101 is not perpendicular to the first direction X, the blocking of the first sub-pixel 111 by the first spacer can be reduced, and furthermore, the color crosstalk of the viewing field when viewing the screen from different viewing angles can be reduced.

[0046] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, in order to reduce the blocking of the first sub-pixel 111 by the first spacer 0101, the extending direction E01 of the first spacer 0101 has an included angle θ1 with the first direction X. For example, the range of the included angle θ1 is 40° to 50° or 130° to 140°. Furthermore, for example, the included angle θ1 is 45° or 135°. In this case, the blocking of the first sub-pixel 111 by the first spacer 0101 is the smallest, thereby significantly improving the color crosstalk of the viewing field.

[0047] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, the central connection line CL1 is not parallel to the first direction X.

[0048] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, the second sub-pixel 112 is included in the first pixel group 011, and the first sub-pixel 111 is included in the second pixel group 012. The first pixel group 011 further includes a first sub-pixel 111, a third sub-pixel 113, and a fourth sub-pixel 114, and the second pixel group 012 further includes a second sub-pixel 112, a third sub-pixel 113, and a fourth sub-pixel 114. In the first pixel group 011 and the first pixel group 011, the connecting line between the center C2 of the second sub-pixel 112 and the center C3 of the third sub-pixel 113 is the first line segment LS1, and 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 on both sides of the first line segment LS1. The first pixel group 011 and the second pixel group 012 are adjacent in the column direction and are offset in the row direction. For example, the first pixel group 011 and the second pixel group 012 can both be called the pixel group 01.

[0049] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, in the first pixel group 011 and the second pixel group 012, the connecting line between the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 is the second line segment LS2, and the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 is 3 / 4 or less. Thereby, when the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixels of the same color, the light-emitting layer patterns of the first sub-pixel 111 and the fourth sub-pixel 114 in the same pixel group 01 can be formed by vapor deposition through the same opening of the mask.

[0050] According to the display substrate according to one or more embodiments of the present disclosure, the first spacer 0101 may be installed between the first sub-pixel 111 and the second sub-pixel 112 of adjacent pixel groups, and / or may be installed between the first sub-pixel 111 and the fourth sub-pixel 114 of adjacent pixel groups.

[0051] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, a second spacer 0102 is further provided. The second spacer 0102 is located between adjacent pixel groups 01. The second spacer 0102 is installed between the fourth sub-pixel 114 and the second sub-pixel 112 of different pixel groups 01 or between the fourth sub-pixel 114 and the third sub-pixel 113 of different pixel groups. The extending direction of the second spacer 0102 between the fourth sub-pixel 114 and the second sub-pixel 115 or between the fourth sub-pixel 114 and the third sub-pixel 113 is not perpendicular to the first direction X.

[0052] For example, the second spacer 0102 extends between the fourth sub-pixel 114 and the second sub-pixel 112 of different pixel groups 01, or extends between the fourth sub-pixel 114 and the third sub-pixel 113 of different pixel groups 01. The extending direction E02 of the second spacer 0102 is not perpendicular to the first direction X. For example, the extending direction E02 of the second spacer 0102 is different from both the first direction and the second direction.

[0053] For example, the display substrate includes a plurality of first pixel groups 011 in odd rows and a plurality of second pixel groups 012 in even rows. The display substrate further includes a second spacer 0102. The second spacer 0102 extends between the fourth sub-pixel 114 in at least one of each first pixel group 011 and each second pixel group 012 and at least one of the second sub-pixel 112 and the third sub-pixel 113 adjacent to the fourth sub-pixel 114 in the column direction. The extending direction E02 of the second spacer 0102 is not perpendicular to the first direction X.

[0054] For example, in order to reduce the blocking of the fourth sub-pixel 114 by the second spacer 0102, the extending direction E02 of the second spacer 0102 has an included angle θ2 with the first direction X. For example, the range of the included angle θ2 is 40° to 50° or 130° to 140°. Further, for example, the included angle θ2 is 45° or 135°. In this case, the blocking of the fourth sub-pixel 114 by the second spacer is the smallest, thereby further reducing the blocking of the pixels sensitive to the human eye and significantly improving the color overlap in the visual field.

[0055] As shown in FIG. 2A, the spacer may be strip-shaped, and its extending direction is different from both the first direction and the second direction. The spacer includes a first spacer 0101 and a second spacer 0102. For example, the shape of the spacer is the shape of the orthographic projection of the spacer on the base substrate 1. Similarly, the shape of the sub-pixel is the shape of the orthographic projection of the sub-pixel on the base substrate 1.

[0056] As shown in FIG. 2A, the connecting line between the center of the fourth sub-pixel 114 in the second pixel group 012 and the center of the third sub-pixel 113 or the fourth sub-pixel 114 in the first pixel group 011 adjacent to the fourth sub-pixel 114 is the center connecting line CL2, and the center connecting line CL2 is not perpendicular to the first direction X.

[0057] According to the display substrate according to one or more embodiments of the present disclosure, at least one of the first sub-pixel 111 and the fourth sub-pixel 114 is a sub-pixel of a color sensitive to the human eye. For example, the second sub-pixel 112 and the third sub-pixel 113 may be sub-pixels of a color insensitive to the human eye. In the embodiments of the present disclosure, by reducing the blocking of the sub-pixels of the sensitive color by the first spacer and / or the second spacer, the color overlap in different visual fields can be reduced. For example, the first spacer and / or the second spacer may be located between the sub-pixels of the sensitive color and the sub-pixels of the insensitive color.

[0058] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, the first spacer 0101 and the second spacer 0102 located around the second sub-pixel 112 or the fourth sub-pixel 114 form a spacer pair 01012, and the first spacer 0101 and the second spacer 0102 in the spacer pair 01012 are located on the same side of the second sub-pixel 112 or the third sub-pixel 113. In FIG. 2A, the case where the spacer pair 01012 is located on the same side of the second sub-pixel 112 will be described as an example. By locating the spacer pair 01012 around the insensitive color sub-pixels, the influence of the spacer pair 01012 on color display can be reduced, and color bleeding in the viewing field can be decreased.

[0059] For an AMOLED display substrate, the spacer serves two roles. One is to support the mask for depositing the light-emitting layer pattern, and the other is to support the cover plate during packaging.

[0060] As shown in FIG. 2A, according to the display substrate according to one or more embodiments of the present disclosure, in order to reduce the number of spacers in the display substrate and reduce color bleeding in different viewing fields, in at least one of the first pixel group 011 and the second pixel group 012 (in the same pixel group 01), no spacer is installed between the first sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113, and the fourth sub-pixel 114. For example, in this case, a spacer pair may be installed between the pixel groups 01. For example, by forming three spacer pairs around each pixel group 01, it is possible to easily support the mask when the light-emitting layer is manufactured.

[0061] FIG. 2B shows a display substrate according to at least one embodiment of the present disclosure. In this display substrate, the first spacer 0101 and the second spacer 0102 in the spacer pair 01012 are located on the same side of the third sub-pixel 113.

[0062] FIG. 2C shows a display substrate according to at least one embodiment of the present disclosure. The display substrate includes two types of spacer pairs 01012. One type of spacer pair 01012 is located on the same side (e.g., the left side) of the third sub-pixel 113 in the first pixel group 011. The other type of spacer pair 01012 is located on the same side (e.g., the right side) of the second sub-pixel 112 in the second pixel group 012.

[0063] FIG. 2D shows a display substrate according to at least one embodiment of the present disclosure. The display substrate includes a first spacer 0101 and a third spacer 0103. The third spacer 0103 may be installed between two desensitized colors of different pixel groups 01. For example, it is installed between the second sub-pixel 112 and the third sub-pixel 113.

[0064] Hereinafter, in order to facilitate the description of the pixel array structure, the spacers on the display substrate are omitted, and the pixel array structure is described. The first spacer 0101, the second spacer 0102, the third spacer 0103, etc. in the embodiments of the present disclosure may be installed in the pixel array structure described below.

[0065] As shown in FIG. 2E, at least one embodiment of the present disclosure provides a display substrate, and the pixel array structure includes 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. The connecting line between the center C2 of the second sub-pixel 112 and the center C3 of the third sub-pixel 113 is the 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 on both sides of the first line segment LS1. For example, the connecting line between 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 whose length is smaller than the length of the first line segment LS1. For example, in order to achieve the 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 3 / 4 or less.

[0066] According to the display substrate according to at least one embodiment of the present disclosure, in the pixel array structure of the display substrate, the distance between the first sub-pixel and the fourth sub-pixel in the same pixel group is shortened. Thereby, on the one hand, the pixel arrangement can be made denser, the risk of color mixing can be reduced, color bleeding can be improved, and the visual granularity can be improved. On the other hand, the interval between sub-pixels can be increased to facilitate manufacturing. Or, considering both the density of the pixel arrangement and the interval between sub-pixels, balancing between the two, while making the pixel arrangement dense, the interval between sub-pixels (the interval of the pixel definition layer) is increased to a certain extent, thereby reducing the risk of color mixing, improving color bleeding, and improving the visual granularity effect, and at the same time achieving the effect of increasing the interval between sub-pixels. For example, the shape of each sub-pixel provided in the embodiment of the present disclosure may be defined by a pixel definition layer, but is not limited thereto. For example, each sub-pixel in the drawing is an actual light-emitting region. The specific shape of each sub-pixel can be set according to the manufacturing process. For example, this actual light-emitting region may be determined by at least one of the shapes of an electrode, a light-emitting layer, and a pixel definition layer.

[0067] For example, when this pixel array structure is used in an OLED display substrate and the first sub-pixel and the fourth sub-pixel are of the same color, the light-emitting layer patterns of the first sub-pixel and the fourth sub-pixel in the same pixel group may be formed by evaporation through the same opening of a mask.

[0068] For example, the first sub-pixel 111 and the fourth sub-pixel 114 may be sub-pixels of colors sensitive to the human eye, such as green sub-pixels, yellow sub-pixels, white sub-pixels, etc. For example, compared with the second sub-pixel 112 and the third sub-pixel 113, the areas of the first sub-pixel 111 and the fourth sub-pixel 114 are small. For example, the area of the first sub-pixel 111 is smaller than that of the second sub-pixel 112, and / or the area of the first sub-pixel 111 is smaller than that of the third sub-pixel 113. Similarly, for the fourth sub-pixel 114, reference can be made to the above description regarding the area of the first sub-pixel 111. That is, the area of the fourth sub-pixel 114 is smaller than that of the second sub-pixel 112, and / or the area of the fourth sub-pixel 114 is smaller than that of the third sub-pixel 113.

[0069] According to the display substrate according to at least one embodiment of the present disclosure, its pixel array structure can improve the distribution uniformity of sub-pixels of sensitive colors by adjusting the intervals of sub-pixels of sensitive colors at visual positions, thereby enhancing the visual resolution of the pixel array structure and improving the display quality.

[0070] The second sub-pixel 112 and the third sub-pixel 113 may be sub-pixels of colors insensitive to the human eye. For example, one of the second sub-pixel 112 and the third sub-pixel 113 may be a red sub-pixel and the other may be a blue sub-pixel, but it is not limited thereto. In the embodiment of the present disclosure, the case where the second sub-pixel 112 is a red sub-pixel and the third sub-pixel 113 is a blue sub-pixel will be described as an example. However, when the pixel array structure uses the red-green-blue (RGB) mode, the color sensitive to the human eye may be green.

[0071] As shown in FIG. 2E, 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 sub-pixel 111 and the fourth sub-pixel 114 are arranged symmetrically about the first direction X, making the arrangement of the pixel structure more uniform. For example, the first sub-pixel 111 is evenly arranged with respect to the second sub-pixel 112 and the third sub-pixel 113, maintaining consistency, thereby making the arrangement of the pixel structure more uniform.

[0072] As shown in FIG. 2E, according to the display substrate according to one or more embodiments of the present disclosure, in its pixel arrangement structure, the second line segment LS2 is perpendicular to the first line segment LS1. Thereby, the pixel arrangement becomes more uniform. For example, 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, but it is not limited thereto. Thereby, the distribution of the pixel structure becomes more uniform, the screen display quality becomes higher, and the problem of display granularity at a low PPI is improved.

[0073] As shown in FIG. 2E, for ease of explanation, a plurality of square dotted frames are shown, the length of each dotted frame is 1 / 2L, and four dotted frames can form a square with a side length of L. What is within the dark rectangular dotted frame in FIG. 2E is the pixel group 01. The pixel group 01 may be the smallest repeating unit of the pixel arrangement structure. For example, the pixel arrangement structure can be obtained by translating and copying the smallest repeating unit in parallel. For example, within the smallest repeating unit, there is no sub-unit that can form a pixel structure arranged by horizontal movement and repetition. For example, as shown in FIG. 2, the dark rectangular dotted frame has a length of 2L and a width of L.

[0074] As shown in FIG. 2E, the first line segment SL1 is perpendicular to the second line segment SL2 and bisects each other perpendicularly. The first line segment SL1 perpendicularly bisects the second line segment SL2. The second line segment SL2 also perpendicularly bisects the first line segment SL1. For example, in pixel group 01, the largest region surrounded by the connecting lines of the centers of the first sub-pixel 111, the second sub-pixel 112, the fourth sub-pixel 114, and the third sub-pixel 113 is a rhombus, and the first line segment SL1 and the second line segment SL2 are the diagonals of the rhombus, respectively.

[0075] As shown in FIG. 2E, in pixel group 01, the distance between the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 may be 1 / 2L or more. For example, the range of the distance may be 1 / 2L to L. For example, the first sub-pixel 111 and the fourth sub-pixel may adopt sub-pixels of the same color. When the first sub-pixel 111 and the fourth sub-pixel both adopt sub-pixels of the same color such as the first sub-pixel 111, the setting of the distance can avoid the situation that the distance between adjacent first sub-pixels is close, making it difficult to distinguish between two adjacent first sub-pixels and visually integrating them with the human eye, and further avoiding the resulting granularity. Therefore, the pixel array structure can improve the distribution uniformity of the first sub-pixels, thereby enhancing the visual resolution and further improving the display quality.

[0076] As shown in FIG. 2E, the distance between the center C3 of the third sub-pixel 113 and the center C2 of the second sub-pixel 112 may be 4 / 3L. In order to make the ratio of the length of the second line segment LS2 to the first line segment LS1 3 / 4 or less, under the conditions permitted by the process, the distance between the third sub-pixel 113 and the second sub-pixel 112 in the same pixel group can be increased and / or the distance between the first sub-pixel 111 and the fourth sub-pixel 114 can be decreased.

[0077] As shown in FIG. 2E, according to the display substrate 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.

[0078] Subsequently, referring to FIG. 2A, as shown in FIG. 2A, at least one of the first spacer 0101 and the second spacer 0102 does not overlap with the central connection line between the first sub-pixel 111 and the third sub-pixel 113. For example, at least one of the first spacer 0101 and the second spacer 0102 does not overlap with the central connection line between the blue sub-pixel and the green sub-pixel.

[0079] For example, in order to reduce color bleeding at different viewing angles, the orthographic projection of the first spacer 0101 on a straight line along the first direction does not overlap or partially overlap with the orthographic projection of at least one of the second sub-pixel 112 and the third sub-pixel 113 on a straight line along the first direction.

[0080] For example, the ratio of the total number of the first spacer 0101 and the second spacer 0102 to the number of sub-pixels is 0.3 to 1. For example, the sub-pixels include a first sub-pixel 111, a second sub-pixel 112, a third sub-pixel 113, and a fourth sub-pixel 114. For example, in the same pixel group, the ratio of the total number of the first spacer 0101 and the second spacer 0102 to the number of sub-pixels is 0.3 to 1.

[0081] The above has described designing the position of the spacer to prevent the problem of color overlap caused by the angle. However, the embodiments of the present disclosure further provide another solution for the spacer. For example, a transparent spacer can be used to prevent color overlap due to the angle. The position of the transparent spacer is not limited to the above position. For example, instead of a polyimide material with a low light transmittance, the transparent spacer can employ a material with a high light transmittance, which is thus completely transparent and meets the requirements as another alternative material. In this case, no matter from which angle the screen is observed, the material used has a high light transmittance and transmits light of different wavelengths without selectivity. Therefore, neither red light nor blue light is blocked by the spacer and can be emitted normally. Since this normal light emission is not related to the viewing angle, it alleviates to some extent the problems of color overlap due to the angle and the asymmetry of the left and right visual fields on a white screen.

[0082] An alternative material that can be used for the spacer may be silicone. The silicone film has excellent heat resistance, low-temperature flexibility, high dielectric constant, insulation properties, etc. Also, a silicone film, for example, a polymer film made of dimethylsiloxane (PDMS) as a raw material, has colorlessness and optical perfect transparency, and can reach a very high, and even more than 90% light transmittance even when the thickness is at the millimeter level, thereby enabling the spacer to have good transparency within the visible light range. Taking the silicone material N-(trimethoxysilylpropyl)-4-azido-2,3,5,6-tetrafluorobenzamide (PFPA-silane) as an example, this silicone material has a high light transmittance (close to 80%) and the difference in the light transmittance at each wavelength is not large.

[0083] Also, the material of the spacer may be a modified colorless and transparent new polyimide material. In addition to various excellent properties of polyimide itself, due to the modification, it has a high light transmittance for visible light in the entire band, so it can be used as the material of the transparent spacer. For example, a polyimide and silica PI / SiO2 composite film can be adopted. After being modified, the PI / SiO2 composite film has a significantly increased light transmittance compared with pure polyimide due to the improvement, and has almost no selectivity with respect to wavelength within the visible light range, and the light transmittance at each wavelength is almost the same. The two characteristics of high light transmittance and no selectivity of light transmission with respect to wavelength are both advantageous for improving color shading due to the angle.

[0084] FIG. 3A shows a pixel array structure with the dashed line shown in FIG. 2E removed. The dashed line, center, etc. given in the embodiments of the present disclosure are virtual lines and virtual centers shown for ease of explanation. For example, the center may be the centroid, the intersection of the perpendicular bisectors of the opposite sides, etc., but is not limited thereto.

[0085] FIG. 3B shows a display substrate 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 there is no color mixing problem for sub-pixels of the same color, 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 nesting of the mask, reducing the nesting pressure, and improving the quality of the nesting.

[0086] As shown in FIG. 3B, since the inclination of the first sub-pixels 111 in the same row is low, when the first sub-pixels 111 belonging to the same row display a straight line together, the inclination is low (the dense dotted line in FIG. 3B). Since the variation range of the first sub-pixels in the adjacent pixel group is small, the straight lines displayed in the adjacent rows mesh with each other due to the large variation range, making it difficult to distinguish the two straight lines and avoiding the occurrence of a situation where they are visually integrated by the human eye. Thereby, the pixel array structure can enhance the visual resolution.

[0087] FIG. 3C shows a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 3C, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixels of the same color. For example, it may include two types of pixel groups. The same-color sub-pixels that form a pair in one type of pixel group are the first sub-pixels (for example, green sub-pixels), and the same-color sub-pixels that form a pair in another type of pixel group are the fourth sub-pixels (for example, white sub-pixels or yellow sub-pixels). The colors of the two sub-pixels installed as a pair and located between the second sub-pixel and the third sub-pixel in the adjacent pixel groups in the diagonal direction of each pixel group are different from the colors of the sub-pixels installed as a pair and located between the second sub-pixel and the third sub-pixel in the pixel group.

[0088] FIG. 4 shows a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 4, the first line segment LS1 extends in the first direction X. The length D1 of the central connection line LS3 between the 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, whereby the pixels can be arranged densely. In FIG. 4, the case where the length of the first line segment LS1 is 4 / 3L is described as an example, but it is not limited thereto. For example, the length range of the first line segment LS1 may be 11 / 9L to 13 / 9L.

[0089] For example, in order to arrange pixels as closely as possible, when permitted by process conditions, the ratio of the length D1 of the center connection line LS3 between the centers of adjacent second sub-pixels 112 and the centers of third sub-pixels 113 in two adjacent pixel groups 01 in the first direction to the length of the first line segment LS1 is 1 / 2 or less. Although the case where the length of the distance D1 is 2 / 3L in FIG. 4 has been described as an example, it is not limited thereto. For example, the range of the length of the distance D1 may be 5 / 9L to 7 / 9L.

[0090] As shown in FIG. 4, according to the display substrate according to one or more embodiments of the present disclosure, in its pixel arrangement structure, a plurality of pixel groups 01 are arranged in an array, including a plurality of rows and a plurality of columns. For example, it may include 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 arranged offset. The second line segment LS2 may extend in the second direction Y. For example, in order to arrange the pixels in the column direction closely, in adjacent odd rows or adjacent even rows, the length D2 of the center connection line L14 between the centers of adjacent first sub-pixels 111 and fourth sub-pixels 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 rows or adjacent even rows, the ratio of the length D2 of the center connection line L14 between the centers of adjacent first sub-pixels 111 and fourth sub-pixels 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.

[0091] For example, in adjacent odd rows or adjacent even rows, the length D2 of the center connection line L14 between the centers of adjacent first sub-pixels 111 and fourth sub-pixels 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2.

[0092] Thereby, a pixel structure can be formed in which six pixel groups are closely arranged around one pixel group. The pixel groups in odd rows and the pixel groups in even rows are arranged in a shifted manner. For example, in the first direction X, they are shifted by half the length of the pixel group in the first direction X. For example, the shifted length is L, but it is not limited thereto. For example, in adjacent odd rows or adjacent even rows, the ratio of the length D2 of the central connection line between the adjacent first sub-pixel 111 and the fourth sub-pixel 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.

[0093] As shown in FIG. 4, according to the display substrate according to one or more embodiments of the present disclosure, in its pixel arrangement structure, the extension line of the second line segment LS2 of each pixel group 01 passes through the midpoint C0 of the central connection line LSC between two pixel groups 01 adjacent to and in the same row as the pixel group 01 in the second direction Y. The center of each pixel group 01 is C1, and the connection line between the centers C1 of two adjacent pixel groups 01 is the central connection line LSC. For example, the center C1 of the pixel group 01 may be the intersection of the first line segment LS1 and the second line segment LS2.

[0094] For example, the extension line of the second line segment LS2 of each first pixel group 011 passes through the center C5 of the central connection line LS3 between the adjacent third sub-pixel 113 and the second sub-pixel 112 of two second pixel groups 012 adjacent to and in the same row as the first pixel group 011. For example, the center C5 and the center C0 may be the same point.

[0095] As shown in FIG. 4, according to the display substrate according to one or more embodiments of the present disclosure, in adjacent odd rows or adjacent even rows, in two adjacent pixel groups 01 arranged in the second direction Y (two adjacent first pixel groups 011 or two adjacent second pixel groups 012), the central connection line LS4 of the two third sub-pixels 113 and the first line segment LS1 in the pixel group 01 located between the two third sub-pixels 113, the intersection point IP1 is located between the center IP0 of the first line segment LS1 and the center C2 of the second sub-pixel 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 connection line between the center IP0 of the first line segment LS1 and the center C2 of the second sub-pixel 112.

[0096] For example, in adjacent odd rows, the intersection point IP1 between the central connection line LS4 of the two third sub-pixels 113 of the adjacent first pixel groups 011 in the same column and the first line segment LS1 of the second pixel group 012 adjacent to the third sub-pixel 113 is located between the intersection point 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 sub-pixel 112. The third sub-pixel 113 in the above description can also be replaced with the second sub-pixel 112.

[0097] For example, in adjacent odd rows or adjacent even rows, the intersection point between the central connection line of the two second sub-pixels 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 the first line segment LS1 in the pixel group 01 located between the two second sub-pixels 112 is located between the center IP0 of the first line segment LS1 and the center C3 of the third sub-pixel 113. For example, the intersection point is located at the midpoint of the connection line between the center IP0 of the first line segment LS1 and the center C3 of the third sub-pixel 113.

[0098] For example, the first spacer 0101 is disposed between adjacent pixel groups in different rows. For example, the second spacer 0102 is disposed between adjacent pixel groups in different rows.

[0099] As shown in FIG. 4, according to the pixel array structure according to one or more embodiments of the present disclosure, in the same pixel group, the closest distance between the second sub-pixel 112 and the first sub-pixel 111 is L1, the closest distance between the second sub-pixel 112 and the fourth sub-pixel 114 is L2, the closest distance between the third sub-pixel 113 and the first sub-pixel 111 is L3, the closest distance between the third sub-pixel 113 and the fourth sub-pixel 114 is L4, and L1 = L2 = L3 = L4.

[0100] As shown in FIG. 4, according to the pixel array structure according to one or more embodiments of the present disclosure, the closest distances between the first sub-pixel 111 or the fourth sub-pixel 114 and the second sub-pixel 112 and the third sub-pixel 113 in a pixel group adjacent thereto in the second direction and not located in the same row are L5 and L6, respectively, and L5 = L6.

[0101] For example, in one embodiment, L1 = L2 = L3 = L4 = L5 = L6.

[0102] For example, for L1, L2, L3, L4, L5, and L6, reference can be made to the annotations regarding the minimum process interval d in FIGS. 7A and 7B. Each closest distance is the minimum distance between two sub-pixels. For example, when actually manufacturing, L1, L2, L3, L4, L5, and L6 can be made as close as possible to the minimum process interval d. For example, the closest distance is the distance between the two closest points on the outer edges of two sub-pixels.

[0103] As shown in FIG. 4, according to the pixel array structure according to one or more embodiments of the present disclosure, in adjacent sub-pixels, each pair of sides is substantially parallel or the included angle is less than 45°, and the adjacent sub-pixels include any two adjacent ones of the first sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113, and the fourth sub-pixel 114.

[0104] As shown in FIG. 5A, according to the display substrate according to one or more embodiments of the present disclosure, in its pixel array structure, both the first sub-pixel 111 and the fourth sub-pixel 114 are elongated, and the extending direction A1 of the first sub-pixel 111 does not overlap with the extending direction A2 of the fourth sub-pixel 114. For example, the extending direction A1 of the first sub-pixel 111 intersects or has an included angle with the extending direction A2 of the fourth sub-pixel 114. For example, in each pixel group, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged symmetrically about the first direction X and are inclined at a certain angle. For example, the range of the included angle between the inclination angle and the first direction X is 30° to 50°, and further, for example, the included angle is 45°, but it is not limited thereto. For example, the extending direction A1 of the first sub-pixel 111 may be the long axis direction of the first sub-pixel 111, but it is not limited thereto. For example, the extending direction A2 of the fourth sub-pixel 114 may be the long axis direction of the fourth sub-pixel 114, but it is not limited thereto.

[0105] As shown in FIG. 5A, according to the pixel array 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.

[0106] 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 it is not limited thereto.

[0107] For example, in the embodiments of the present disclosure, the term "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, and may be other shapes, such as a long hexagon, a long ellipse, a trapezoid, etc. In the embodiments of the present disclosure, the shape of each sub-pixel is not limited to a regular shape and may be an irregular shape.

[0108] For example, the included angle between the extending direction A1 of the first sub-pixel 111 and the extending direction A2 of the fourth sub-pixel 114 is 70° to 100°, and further, the included angle may be 80° to 95°, and further, the included angle may be 90° (right angle). Thereby, by forming the first sub-pixel 111 and the fourth sub-pixel 114 with a larger area, the light-emitting area can be increased, and the netting during the manufacture of the mask for manufacturing the light-emitting layer pattern can be facilitated. For example, when it is a right angle, a deviation of several degrees up and down is allowed. For example, it may have a deviation of 5° up and down from 90°.

[0109] FIG. 5B shows a display substrate according to one or more embodiments of the present disclosure. In its pixel array structure, the included angle between the extending direction A1 of the first sub-pixel 111 and the extending direction A2 of the fourth sub-pixel 114 is a right angle, and in the same pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixels of the same color.

[0110] FIG. 6 shows a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 6, the second sub-pixel 112 and the third sub-pixel 113 may be in a rhombus or substantially rhombus shape. The substantially rhombus includes, but is not limited to, for example, a rounded rhombus, a chamfered rhombus, etc. The rhombus or substantially rhombus shape of the sub-pixel is more advantageous for a close arrangement of pixels. For example, the first sub-pixel 111 can be symmetrically surrounded around the third sub-pixel 113 and the second sub-pixel 112, and the long sides of the first sub-pixel 111 all face the second sub-pixel 112, and the short sides all face the third sub-pixel 113, thereby maximizing the uniformity of the pixel arrangement. The arrangement of the first sub-pixel 111 becomes more uniform, color bleeding is improved to a certain extent, which is advantageous for realizing a high PPI, and the aperture ratio of the pixel is maximally increased.

[0111] The shape of each sub-pixel is not limited to the above, and can be adjusted as needed. Maximizing the area is the main principle when determining the shape of the sub-pixel.

[0112] To avoid color mixing, the distance between sub-pixels of different colors must be greater than the minimum process distance d of the patterning process. Furthermore, considering the symmetry requirement by a certain special process, for example, in FMM nesting, the symmetry of the drilling pattern and distribution is desirable, the shapes of the first sub-pixel and the fourth sub-pixel may each be a symmetric pentagon with a right bottom angle (see FIG. 2E). As can be seen, the distance between the second and third sub-pixels between adjacent pixel groups of sub-pixels with a symmetric shape is significantly greater than the distance between other sub-pixels of different colors (the minimum process distance d), that is, there is available area for the design. When other processes that are not sensitive to symmetry (such as CF, etc.) are permitted or adopted in the FMM nesting technology, an asymmetric sub-pixel shape can be adopted to realize the maximization of the sub-pixel area.

[0113] FIG. 7A and FIG. 7B show a pixel array structure in a display substrate according to one or more embodiments of the present disclosure. As shown in FIGS. 7A and 7B, under the condition that the adoption of the shape of the asymmetric sub-pixels is permitted, depending on the minimum process interval d of the patterning process, the shapes of the second sub-pixel 112 and the third sub-pixel 113 may be a right trapezoid or a right trapezoid with an acute angle cut off, thereby maximizing the area.

[0114] As shown in FIG. 7A, since the shapes of both the second sub-pixel 112 and the third sub-pixel 113 are right trapezoids, compared with the case where the shapes of both the second sub-pixel 112 and the third sub-pixel 113 are hexagons (a hexagon formed by combining two symmetric pentagons with right bottom angles), the acute angle portions 190 of the second sub-pixel 112 and the third sub-pixel 113 can further increase the areas of the second sub-pixel 112 and the third sub-pixel 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.

[0115] As shown in FIG. 7B, the shapes of both the second sub-pixel 112 and the third sub-pixel 113 are isosceles trapezoids with an acute angle cut off. Thereby, when the process accuracy is constant, that is, when the distances between the first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 are constant, the areas of the second sub-pixel 112 and the third sub-pixel 113 are increased, and the space utilization rate within the pixel group is increased.

[0116] According to the pixel array structure in the display substrate according to one or more embodiments of the present disclosure, the shapes of the second sub-pixel 112 and the third sub-pixel 113 include at least one of an isosceles trapezoid, a hexagon, and a rhombus, and the second sub-pixel 112 includes at least one of a pentagon, a rectangle, and a substantially rectangle. The substantially rectangle includes, for example, a rounded rectangle, but is not limited thereto.

[0117] FIG. 8 shows a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 8, in the pixel group of the same row, the third sub-pixel 113 and the first sub-pixel 111 may be driven by the first driving line DL1, and the second sub-pixel 112 and the fourth sub-pixel 114 may be driven by the 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.

[0118] As shown in FIG. 8, the first sub-pixel 111 and the fourth sub-pixel 114 in the pixel group of the odd-numbered columns input data signals via 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 data signals via the second data line DT2. For example, the data signal includes 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, and the E2 direction is parallel to the second direction Y.

[0119] FIG. 9 shows a schematic diagram of a display substrate. In the display substrate, the widths of the sub-pixels in the first direction X are different. Because the widths of the sub-pixels are different, color bleeding is likely to occur when viewed from different viewing angles.

[0120] FIG. 10 shows a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. Along the first direction X, the widths of the first sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113, and the fourth sub-pixel 114 in the first direction X are the same. Thereby, the color bleeding of the viewing angle when viewed from different viewing angles can be reduced.

[0121] 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 realize full-color display by sharing the adjacent third sub-pixel 111 or fourth sub-pixel 114. The display is realized by the method of sharing sub-pixels. The splitting method of pixel units is not limited to the above description. Here, the pixel unit may be called a virtual pixel. The splitting of virtual pixels is related to the driving method. The specific splitting method of virtual pixels can be determined by the actual driving method, and the present disclosure does not particularly limit this.

[0122] FIG. 11 shows a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 11, the display substrate includes a third spacer 0103 located between the first sub-pixel 111 and the fourth sub-pixel 114 in the pixel group 01. For example, both the first sub-pixel 111 and the fourth sub-pixel 114 may be green sub-pixels, but it is not limited thereto.

[0123] In the side view, the light emission of each sub-pixel is not blocked by the third spacer 0103. As a result, when displaying a white screen, the color bleeding in the left and right fields of view is improved to some extent, which is not symmetric, thereby improving the image quality and display effect. By installing the third spacer 0103, the problem that the blocking of the light emission of each sub-pixel in the left-right direction does not match is basically solved. Furthermore, the phenomenon that the color bleeding due to the left and right angles is not symmetric can be significantly eliminated. In the case of the up-down direction, since the third spacer blocks only the first sub-pixel and the fourth sub-pixel, even if color bleeding due to the angle occurs by blocking the first sub-pixel and the fourth sub-pixel, in the two up-down directions, the blocking of the first sub-pixel and the fourth sub-pixel when the angles are the same matches. Therefore, the phenomenon that the color bleeding due to the angle is not symmetric does not exist. For example, by adjusting the size and thickness of the third spacer 0103, the blocking degree of the first sub-pixel 111 and the fourth sub-pixel 114 can be adjusted, and furthermore, the degree of color bleeding due to the angle in the up-down direction can be adjusted.

[0124] As shown in FIG. 11, the extending direction E03 of the third spacer 0103 is perpendicular to the connecting line CL0 of the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114, but is not limited thereto.

[0125] As shown in FIG. 11, the length of the third spacer 0103 in the first direction X is larger than the length of at least one of the first sub-pixel 111 and the fourth sub-pixel 114 in the first direction X.

[0126] As shown in FIG. 11, the shapes of both the first sub-pixel 111 and the fourth sub-pixel 114 are pentagons. The pentagon includes a set of parallel opposite sides and one vertical side, and the vertical side is perpendicular to the set of parallel opposite sides. The third spacer 0103 is parallel to the vertical side of the pentagon.

[0127] FIG. 12 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 12, 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 defining layer 007, which are sequentially disposed on the base substrate 1001. As can be seen from FIG. 12, below the sub-pixel, there is a thin-film transistor structure including a gate 302, an active layer 301, and a drain 303. The thin-film transistor may be one of the thin-film transistors in the pixel driving circuit, and the connection relationship between the thin-film transistor and other components may be arranged according to the installation of the specific pixel circuit, and the detailed description is omitted here. Further, a signal line 304 may be included at the same layer position as the drain 303, and the signal line 304 may be used as a signal line having a specific function such as a data line or a gate line according to the installation of the pixel circuit. As can be seen from FIG. 12, the pixel defining layer 007 may include an opening for defining the sub-pixel. 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 FIG. 12.

[0128] For example, the anode 403 and the light-emitting layer 503 are in contact with each other, so that the contacting portions can drive the light-emitting layer to emit light. Therefore, the contacting portions of the anode 403 and the light-emitting layer 503 are the effective portions where the sub-pixels can emit light. Here, the anode 403 is used as a pixel electrode, so that different data voltages can be applied to different sub-pixels. However, in the embodiments of the present disclosure, the electrode used as the pixel electrode of the sub-pixel is not limited to the anode, and the cathode of the light-emitting diode may be used as the pixel electrode. Therefore, in the embodiments of the present disclosure, the shape of the sub-pixel may be the shape of the portion where the pixel electrode and the light-emitting layer are in contact with each other. For example, for each sub-pixel, 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. The embodiments of the present disclosure do not particularly limit this. 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 defining layer. For example, the lower electrode (for example, the anode) of the light-emitting diode may be installed below the pixel defining layer. The pixel defining layer has an opening for defining a pixel. The opening exposes a part of the lower electrode. When the light-emitting layer is formed in the opening of the pixel defining layer, the light-emitting layer is in contact with the lower electrode, so that the light-emitting layer can be driven to emit light at this portion. Therefore, in this case, the opening of the pixel defining layer defines the shape of the sub-pixel.

[0129] For example, the pixel circuit includes at least one transistor having a gate, an active layer, and a source / drain. In one example, the signal line is electrically connected to the source or drain of the corresponding transistor through a via penetrating the insulating layer therebelow. In one example, the active layer of the transistor is formed by 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 / drain. For example, the signal line is electrically connected to the polysilicon source or drain made conductive through a via. 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 part of the metal pattern of the gate metal layer and the data metal layer may be used as an intermediate connector for the electrical connection through the via, but the embodiments of the present disclosure are not limited thereto.

[0130] For example, with respect to the shapes of the various sub-pixels described in the embodiments of the present disclosure, all of them are approximate shapes, and when forming the light-emitting layer or various electrode layers, it cannot be ensured that the edges of the sub-pixels are strictly straight lines and the corners are strictly angular. 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, the metal etching has a tapered slope, and thus, when forming the light-emitting layer of the sub-pixel by the vapor deposition process, one corner of the light-emitting layer may be removed. For example, in the embodiments of the present disclosure, the shape of each sub-pixel is a rounded pattern.

[0131] For example, as shown in FIG. 2A, in one pixel group, the first sub-pixel 111 and the second sub-pixel 112 are sub-pixels with different colors, forming pixel P, and the third sub-pixel 113 and the fourth sub-pixel 114 are sub-pixels with different colors, forming pixel P. When displaying an image, it is necessary to use the sub-pixels of other surrounding pixels for color display. For example, the first sub-pixel 111 and the fourth sub-pixel 114 are green sub-pixels, the second sub-pixel 112 is a red sub-pixel, and the third sub-pixel 113 is a blue sub-pixel. For example, a red sub-pixel and a green sub-pixel form one pixel, and a blue sub-pixel and a green sub-pixel form one pixel. Pixel P here only includes sub-pixels of two colors and it is necessary to use the sub-pixels of other surrounding pixels for color display. Therefore, here, pixel P may be referred to as a virtual pixel. When the resolution is high, the green sub-pixel plays a decisive role in the position of the perceived luminance center of each pixel. For example, the luminance center of the pixel formed by the red sub-pixel and the green sub-pixel is located between the red sub-pixel and the green sub-pixel and closer to the green sub-pixel, and the luminance center of the pixel formed by the blue sub-pixel and the green sub-pixel is located between the blue sub-pixel and the green sub-pixel and closer to the green sub-pixel.

[0132] For example, as shown in FIG. 2A, the shapes of the second sub-pixel and the third sub-pixel are both hexagons where all three pairs of opposite sides are parallel, and the shapes of the first sub-pixel and the fourth sub-pixel are both pentagons. The pentagon includes one pair of parallel opposite sides and one vertical side, and the vertical side is perpendicular to one pair of parallel opposite sides. The vertical sides of the first sub-pixel and the fourth sub-pixel are installed adjacent to each other. One pair of long parallel opposite sides of the second sub-pixel, one pair of long parallel opposite sides of the third sub-pixel, one pair of parallel opposite sides of the first sub-pixel, and one pair of parallel opposite sides of the fourth sub-pixel are parallel.

[0133] When designing a pixel array structure, sub-pixels are usually designed as regular shapes such as hexagons, pentagons, trapezoids or other shapes. When designing, the center of the sub-pixel may be the geometric center of the above regular shape. However, in the actual manufacturing process, the shape of the formed sub-pixel generally has a certain deviation from the designed regular shape. For example, each corner of the above regular shape may become a rounded corner, and thus the shape of the sub-pixel may be a rounded corner pattern. In addition, the shape of the actually manufactured sub-pixel may also have other changes from the designed shape. For example, the shape of a sub-pixel designed as a hexagon may become approximately elliptical when actually manufactured. Therefore, the center of the sub-pixel may not be the exact geometric center of the irregular shape of the manufactured sub-pixel. In an embodiment of the present disclosure, the center of the sub-pixel may have a certain deviation from the geometric center of the shape of the sub-pixel. The center of the sub-pixel is any point within the region surrounded by specific points on the radiation line from the geometric center of the sub-pixel to each point on the edge of the sub-pixel, and the specific point on the radiation line is located at a position 1 / 3 of the length of the radiation line away from the geometric center. The definition of the center of the sub-pixel is applicable to both the center of the shape of the sub-pixel with a regular shape and the center of the sub-pixel with an irregular shape.

[0134] As described above, due to various manufacturing errors, the shape of the actually manufactured sub-pixel may deviate from the designed shape of the sub-pixel. Therefore, in the present disclosure, regarding the position of the center of the sub-pixel and the relationship between the center of the sub-pixel and the position of other objects, a certain error may be allowed. For example, as long as the connecting line between the centers of the sub-pixels or the line passing through the center of the sub-pixel meets the corresponding other requirements (such as the extending direction), it may pass through the region surrounded by the center of the above radiation line. For example, when it is said that the center of the sub-pixel is on a certain line, it means that this line passes through the region surrounded by the center of the above radiation line.

[0135] In addition, although the shape of each sub-pixel in the drawings includes a precise angle formed by two line segments, in some embodiments, the shape of each sub-pixel may be a rounded pattern. That is, based on the shapes of the various figures described above, the corners of each sub-pixel are rounded. For example, when the light-emitting layer is deposited by a mask, naturally, the corner portions of the light-emitting layer may form a rounded shape.

[0136] At least one embodiment of the present disclosure provides a display device including any of the above display substrates. Therefore, color bleeding at different viewing angles can be improved, and the display quality can be enhanced. When the display panel with the pixel array structure provided in the embodiments of the present disclosure is used in the display device, the resolution of the display device can be further increased, and furthermore, a display device with a truly high resolution can be provided. And the pixel array structure according to the embodiments of the present disclosure has relatively good symmetry, and furthermore, the uniformity of pixel distribution can be improved, and the display effect of the display device can be enhanced.

[0137] 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, etc.

[0138] Note that the following points will be described. (1) The drawings of the embodiments of the present disclosure only show the structures related to the embodiments of the present disclosure, and other structures may refer to normal designs. (2) Unless there is a contradiction, the features in the same and different embodiments of the present disclosure can be combined with each other.

[0139] The above are only specific embodiments of the present disclosure, but do not limit the protection scope of the present disclosure. Any changes or substitutions that can be easily conceived by those skilled in the art without departing from the technical scope related to the present disclosure all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should conform to the protection scope of the claims.

Claims

1. A display substrate comprising a first sub-pixel, a second sub-pixel, and a first spacer, wherein a connecting line between the center of the first sub-pixel and the center of the second sub-pixel is a center connecting line, the center connecting line is not perpendicular to a first direction, and the first direction is at least one of a row direction or a column direction, the first spacer is installed between the first sub-pixel and the second sub-pixel, and an extending direction of the first spacer between the first sub-pixel and the second sub-pixel is not perpendicular to the first direction. A display substrate.

2. The display substrate according to claim 1, wherein an extending direction of the first spacer and the first direction have an included angle in a range of 40° to 50° or 130° to 140°.

3. The display substrate according to claim 2, wherein the included angle is 45° or 135°.

4. The display substrate according to any one of claims 1 to 3, wherein the center connecting line is not parallel to the first direction.

5. The display substrate includes a plurality of pixel groups each having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, and the first spacer is located between the first sub-pixel and the second sub-pixel belonging to different pixel groups. The display substrate according to any one of claims 1 to 4.

6. In the pixel group, a connecting line between the center of the second sub-pixel and the 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 respectively provided on both sides of the first line segment. A connecting line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment having a length smaller than the length of the first line segment. The display substrate according to claim 5.

7. The display substrate according to claim 6, wherein a ratio of the length of the second line segment to the length of the first line segment is 3 / 4 or less.

8. Further comprising a second spacer, the second spacer is located between adjacent pixel groups, and is installed between the fourth sub-pixel and the second sub-pixel of different pixel groups or between the fourth sub-pixel and the third sub-pixel of different pixel groups. An extending direction of the second spacer between the fourth sub-pixel and the second sub-pixel or between the fourth sub-pixel and the third sub-pixel is not perpendicular to the first direction. The display substrate according to claim 6.

9. The first spacer is installed between the first sub-pixel and the second sub-pixel of adjacent pixel groups and / or between the first sub-pixel and the fourth sub-pixel of adjacent pixel groups. The display substrate according to any one of claims 5 to 8.

10. The first spacer located around the second sub-pixel or the fourth sub-pixel forms a spacer pair with the second spacer. The first spacer and the second spacer in the spacer pair are located on the same side of the second sub-pixel or the third sub-pixel. The display substrate according to claim 9.

11. In the same pixel group, no spacer is installed between the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel. The display substrate according to any one of claims 5 to 8.

12. In the pixel group, both the first sub-pixel and the fourth sub-pixel are elongated, and the extending direction of the first sub-pixel does not overlap with the extending direction of the fourth sub-pixel. The display substrate according to any one of claims 5 to 8.

13. The included angle between the extending direction of the first sub-pixel and the extending direction of the fourth sub-pixel is 70° to 100°. The display substrate according to claim 12.

14. The first sub-pixel and the fourth sub-pixel are symmetrically arranged with respect to the first line segment, and / or the second sub-pixel and the third sub-pixel are symmetrically arranged with respect to the second line segment. The display substrate according to claim 12.

15. The first line segment extends in the first direction, and the second line segment extends in the 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 arranged in a staggered manner. The length of the central connection line between the adjacent second sub-pixel and the third sub-pixel in two adjacent pixel groups in the first direction is smaller than the length of the first line segment. In adjacent odd rows or adjacent even rows, the length of the central connection line between the adjacent first sub-pixel and the fourth sub-pixel in two adjacent pixel groups in the second direction is larger than the length of the second line segment. The display substrate according to claim 6.

16. The extension line of the second line segment of each pixel group passes through the midpoint of the central connection line of two pixel groups that are adjacent to the pixel group in the second direction and are in the same row. The display substrate according to claim 15.

17. In adjacent odd rows or adjacent even rows, the intersection point of the central connection line of two third sub-pixels in two adjacent pixel groups arranged in the second direction and the first line segment in the pixel group located between the two third sub-pixels is located between the center of the first line segment and the center of the second sub-pixel. The display substrate according to claim 13.

18. At least one of the first sub-pixel and the fourth sub-pixel is a sub-pixel of a color that is sensitive to the human eye. The display substrate according to any one of claims 5 to 17.

19. In the first direction, the widths of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are the same. The display substrate according to any one of claims 5 to 17.

20. The first line segment extends in the first direction, the second line segment extends in the second direction, the first spacer and the second spacer are strip-shaped, and the extending direction of the strip shape is different from both the first direction and the second direction. The display substrate according to claim 8.

21. At least one of the first spacer and the second spacer does not overlap with the central connection line between the first sub-pixel and the third sub-pixel. The display substrate according to claim 8.

22. The first line segment extends in the first direction, the second line segment extends in the second direction, and the orthographic projection of the first spacer on the straight line along the first direction does not overlap or partially overlap with the orthographic projection of at least one of the second sub-pixel and the third sub-pixel on the straight line along the first direction. The display substrate according to claim 8.

23. The ratio of the sum of the number of the first spacer and the second spacer to the number of sub-pixels is 0.3 to 1, and the sub-pixels include the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel. The display substrate according to claim 8.

24. Both the first spacer and the second spacer are transparent spacers. The display substrate according to claim 8.

25. A display substrate, It comprises 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, the connecting line between the center of the second sub-pixel and the center of the third sub-pixel is a first line segment. The first sub-pixel and the fourth sub-pixel are located between the second sub-pixel and the third sub-pixel, and are respectively provided on both sides of the first line segment. The connecting line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment whose length is smaller than the length of the first line segment, and it has a pixel array structure. The display substrate is further provided with at least one of a first spacer located between adjacent first sub-pixels and second sub-pixels in adjacent pixel groups, a second spacer located between adjacent fourth sub-pixels and second sub-pixels in adjacent pixel groups, and a third spacer located between the first sub-pixel and the fourth sub-pixel in the pixel group.

26. The display substrate according to claim 25, wherein 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 even rows and the pixel groups in odd rows are arranged in a staggered manner.

27. The display substrate according to claim 26, wherein the pixel groups in even rows and the pixel groups in odd rows are offset by half the length of the pixel group in the first direction, which is the row direction.

28. A display device comprising the display substrate according to any one of claims 1 to 27.

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