Pixel arrangement structure, display substrate and display device

Abstract

A pixel arrangement structure, a display substrate and a display device. The pixel arrangement structure includes 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 line connecting 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 arranged on both sides of the first line segment; the line connecting the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment, and the length of the second line segment is less than the length of the first line segment. Thus, the pixel arrangement structure can improve the resolution and also improve the display quality.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a pixel arrangement structure, a display substrate, and a display device. Background Art

[0002] With the continuous development of display technology, people have higher and higher requirements for the resolution of display devices. Due to the advantages of high display quality, the application range of high-resolution display devices is also getting wider and wider. Generally, the resolution of a display device can be improved by reducing the size of pixels and reducing the spacing between pixels. However, the reduction of the size of pixels and the spacing between pixels also places higher and higher requirements on the precision of the manufacturing process, which will lead to an increase in the difficulty of the manufacturing process of the display device and the increase in the manufacturing cost.

[0003] On the other hand, sub-pixel rendering (SPR) technology can take advantage of the difference in the human eye's resolution of sub-pixels of different colors, change the conventional red, green, and blue sub-pixels that simply define a pixel mode, and share certain sub-pixels of color that are not sensitive to resolution between different pixels. By using a relatively small number of sub-pixels, it can simulate the same pixel resolution performance, thereby reducing the difficulty and cost of the production process. Summary of the invention

[0004] The embodiments of the present disclosure provide a pixel arrangement structure, a display substrate and a display device. The pixel arrangement structure can improve the distribution uniformity of sensitive color sub-pixels by adjusting the spacing between sensitive color sub-pixels, thereby improving the visual resolution of the pixel arrangement structure and also improving the display quality of the pixel arrangement structure.

[0005] At least one embodiment of the present disclosure provides a pixel arrangement structure, including a plurality of pixel groups;

[0006] Each pixel group includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel;

[0007] In the pixel group, a line connecting 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 arranged on both sides of the first line segment;

[0008] A line connecting the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment;

[0009] The length of the second line segment is smaller than the length of the first line segment.

[0010] At least one embodiment of the present disclosure provides a display substrate, including the pixel arrangement structure provided by at least one embodiment of the present disclosure.

[0011] At least one embodiment of the present disclosure provides a display device, including the display substrate provided by at least one embodiment of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0013] Figure 1 is a schematic diagram of a pixel arrangement structure;

[0014] Figure 2 A schematic diagram of a pixel arrangement structure provided by an embodiment of the present disclosure;

[0015] Figure 3A A schematic diagram of a pixel arrangement structure provided by an embodiment of the present disclosure;

[0016] Figure 3B A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0017] Figure 3C A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0018] Figure 4 A schematic diagram of a pixel arrangement structure provided by an embodiment of the present disclosure;

[0019] Figure 5A A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0020] Figure 5B A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0021] Figure 6 A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0022] Fig. 7A A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0023] Figure 7B A schematic diagram of a pixel arrangement structure provided by another embodiment of the present disclosure;

[0024] Figure 8 A schematic diagram of a pixel arrangement structure of a display substrate and a driving line and a data line provided in another embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] Figure 1 A schematic diagram of a pixel arrangement structure is shown. Figure 1 As shown, the pixel arrangement is a typical pentile arrangement, and a minimum repeating unit includes two green sub-pixels 0111, one red sub-pixel 0112 and one blue sub-pixel 0113. The pixels are evenly distributed and high PPI (Pixel Per Inch) display is easily achieved.

[0028] The inventors of the present application have discovered that Figure 1 In the pixel arrangement structure shown, the distance between the two green sub-pixels 0111 in the minimum repeating unit is far, which is not conducive to improving the visual resolution and is prone to color fringing and graininess. Figure 1 In the minimum repeating unit, the length of the line LS02 connecting the centers of the two green sub-pixels 0111 is substantially the same as the length of the line LS01 connecting the centers of the red sub-pixel 0112 and the blue sub-pixel 0113 in the minimum repeating unit.

[0029] Even after adopting SPR technology, high-resolution products still require a high PPI (Pixel Per Inch) sub-pixel patterning process to produce, and are therefore still restricted by the precision of the production process. Therefore, it is necessary to improve the pixel arrangement structure to reduce the difficulty of the production process so that high-resolution products are suitable for mass production.

[0030] In order to produce a display device with high resolution, it is necessary to reduce the size of pixels and the spacing between pixels. However, the reduction in the size of pixels and the spacing between pixels also places higher and higher requirements on the precision of the manufacturing process, which will lead to an increase in the difficulty and cost of the manufacturing process of the display device. For example, when producing an active matrix organic light-emitting diode (AMOLED) display device with high resolution, due to the limitation of the process precision of the fine metal mask (FMM) technology, the production process of an active matrix organic light-emitting diode (AMOLED) display device with high resolution (for example, greater than 300 pixel density (PPI)) is difficult and the production cost is high. The quality of pixel arrangement has a great influence on the display effect. A good pixel arrangement can improve the display quality of the picture, increase the aperture ratio, reduce color mixing and reduce the difficulty of the process.

[0031] like Figure 2 As shown, at least one embodiment of the present disclosure provides a pixel arrangement structure, including a plurality of pixel groups 01. Each pixel group 01 includes a first sub-pixel 111, a second sub-pixel 112, a third sub-pixel 113, and a fourth sub-pixel 114. In the pixel group 01, the line connecting the center C2 of the second sub-pixel 112 and the center C3 of the third sub-pixel 113 is a first line segment LS1; the first sub-pixel 111 and the fourth sub-pixel 114 are located between the second sub-pixel 112 and the third sub-pixel 113 and are arranged on both sides of the first line segment LS1. The line connecting the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 is a second line segment LS2; the length of the second line segment LS2 is less than the length of the first line segment LS1. For example, in order to obtain a better pixel dense packing effect, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 is less than or equal to 3 / 4.

[0032] According to the pixel arrangement structure provided by at least one embodiment of the present disclosure, the distance between the first sub-pixel and the fourth sub-pixel in the same pixel group is reduced. On the one hand, the pixel arrangement can be made closer, the risk of color mixing can be reduced, the color edge can be improved, and the visual graininess can be improved. On the other hand, the spacing between the sub-pixels can be enlarged to facilitate production. Alternatively, the compactness of the pixel arrangement and the spacing between the sub-pixels can be taken into account, and a balance can be sought between the two, so that the pixel arrangement is relatively compact and the spacing between the sub-pixels (pixel definition layer spacing) is enlarged to a certain extent, so as to achieve the effect of reducing the risk of color mixing, improving the color edge, improving the visual graininess, and enlarging the spacing between the sub-pixels. For example, the shape of each sub-pixel given in the embodiment of the present disclosure can be defined by the pixel definition layer, but is not limited thereto. For example, each sub-pixel in the accompanying drawings is an actual light-emitting area. The specific shape of each sub-pixel can be set according to the preparation process. For example, the actual light-emitting area can be determined by the shape of at least one of the electrode, the light-emitting layer, and the pixel definition layer. For example, when this pixel arrangement structure is applied to 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 can also be formed by evaporation using the same opening of a mask.

[0033] For example, the first sub-pixel 111 and the fourth sub-pixel 114 may be sub-pixels of colors that are sensitive to human eyes, 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 relatively 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, the fourth sub-pixel 114 may refer to the above description of the area of ​​the first sub-pixel 111.

[0034] According to the pixel arrangement structure provided in at least one embodiment of the present disclosure, the distribution uniformity of sensitive color sub-pixels can be improved by adjusting the spacing of visual position sensitive color sub-pixels, thereby improving the visual resolution of the pixel arrangement structure and enhancing the display quality.

[0035] The second sub-pixel 112 and the third sub-pixel 113 may be sub-pixels of colors that are not sensitive to the human eye. For example, one of the second sub-pixel 112 and the third sub-pixel 113 is a red sub-pixel and the other is a blue sub-pixel, but this is not limited to this. In the embodiment of the present disclosure, the second sub-pixel 112 is a red sub-pixel and the third sub-pixel 113 is a blue sub-pixel. It should be noted that when the pixel arrangement structure adopts a red, green, and blue (RGB) mode, the above-mentioned human eye sensitive color may be green.

[0036] like Figure 2As shown, the first line segment LS1 may extend along the first direction X, and the second line segment LS2 may extend along 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 with the first direction X as the axis of symmetry, so that the pixel structure is arranged more uniformly. For example, the first sub-pixel 111 is uniformly arranged relative to the second sub-pixel 112 and the third sub-pixel 113, and remains consistent, so that the pixel structure is arranged more uniformly.

[0037] like Figure 2 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, the second line segment LS2 is perpendicular to the first line segment LS1. Thus, the pixel arrangement can be made more uniform. For example, the second line segment LS2 is located on the perpendicular midline of the first line segment LS1. At this time, the widths of the sub-pixels of each color in the first direction X can be the same, but are not limited thereto. Thus, the pixel structure distribution can be made more uniform, the picture display quality is higher, and the display graininess problem at a lower PPI is improved.

[0038] like Figure 2 As shown, for the convenience of description, a plurality of square dotted frames are provided, the length of each dotted frame is 1 / 2L, and four dotted frames can form a square with a side length of L. Figure 2 The dark rectangular dotted frame in the figure is a pixel group 01. The pixel group 01 may be the minimum repeating unit of the pixel arrangement structure. For example, the pixel arrangement structure may be obtained by translationally copying the minimum repeating unit. For example, the minimum repeating unit does not include a sub-unit that can be translated and repeated to be arranged to form a pixel structure.

[0039] like Figure 2 As shown, the first line segment SL1 is perpendicular to the second line segment SL2 and bisects each other perpendicularly. The first line segment SL1 bisects the second line segment SL2 perpendicularly. The second line segment SL2 also bisects the first line segment SL1 perpendicularly. For example, in the pixel group 01, the maximum area enclosed by the lines connecting 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.

[0040] like Figure 2As shown, in the 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 greater than or equal to 1 / 2L, for example, the distance may range from 1 / 2L to L. For example, the first sub-pixel 111 and the fourth sub-pixel may use sub-pixels of the same color. When the first sub-pixel 111 and the fourth sub-pixel use sub-pixels of the same color, for example, when both are first sub-pixels 111, the setting of the distance may also avoid the situation where two adjacent first sub-pixels are difficult to distinguish due to the close distance between adjacent first sub-pixels, and are visually combined into one by the human eye, thereby avoiding the resulting graininess. As a result, the pixel arrangement structure may improve the distribution uniformity of the first sub-pixels, thereby improving the visual resolution, and also improving the display quality.

[0041] like Figure 2 As shown, 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 length of the first line segment LS1 less than or equal to 3 / 4, the distance between the third sub-pixel 113 and the second sub-pixel 112 in the same pixel group may be increased, and / or the distance between the first sub-pixel 111 and the fourth sub-pixel 114 may be reduced, if the process allows.

[0042] like Figure 2 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, in order to obtain a densely 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 greater than or equal to 3 / 8.

[0043] Figure 3A The removal of Figure 2 The pixel arrangement structure of the dotted line given in the embodiment of the present disclosure is for the convenience of describing the given virtual line and virtual center. For example, the center can be the centroid, the intersection of the perpendicular bisectors of the opposite sides, etc., but is not limited thereto.

[0044] Figure 3B The pixel arrangement structure provided according to one or more embodiments of the present disclosure is shown. In the same pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 use the same color. For example, both are 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 can be evaporated using the same opening of the mask, thereby facilitating the stretching of the mask, reducing the stretching pressure, and improving the quality of the stretching.

[0045] like Figure 3B As shown, since the slope of the first sub-pixels 111 in the same row is relatively low, when the first sub-pixels 111 in the same row display a straight line together, due to the low slope ( Figure 3BThe first sub-pixel of the adjacent pixel group has a small fluctuation amplitude, thereby avoiding the situation that the two straight lines generated by the large fluctuation amplitude interlocking with the straight lines displayed in the adjacent row are difficult to distinguish and are visually combined into one by the human eye. Therefore, the pixel arrangement structure can improve the visual resolution.

[0046] Figure 3C FIG. 2 shows a pixel arrangement structure provided according to one or more embodiments of the present disclosure. Figure 3C As shown, 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, two types of pixel groups may be included, in which the paired sub-pixels of the same color in one type of pixel group are the first sub-pixels (for example, green sub-pixels), and the paired sub-pixels of the same color in the other 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 arranged in pairs between the second sub-pixel and the third sub-pixel in the pixel groups adjacent in the diagonal direction of each pixel group are different from the colors of the sub-pixels arranged in pairs between the second sub-pixel and the third sub-pixel in the pixel group.

[0047] Figure 4 The pixel arrangement structure provided according to one or more embodiments of the present disclosure is shown. Figure 4 As shown, the first line segment LS1 can extend along the first direction X, and the length D1 of the center line LS3 between the adjacent second sub-pixels 112 and the third sub-pixels 113 in two adjacent pixel groups 01 in the first direction X is smaller than the length of the first line segment LS1, so that the pixels can be closely arranged. Figure 4 The length of the first line segment LS1 is 4 / 3L as an example for illustration, but the invention is not limited thereto. For example, the length of the first line segment LS1 may range from 11 / 9L to 13 / 9L.

[0048] For example, in order to arrange the pixels as closely as possible and in accordance with the process conditions, the ratio of the length D1 of the center line LS3 between the center of the adjacent second sub-pixel 112 and the center of the third sub-pixel 113 in two adjacent pixel groups 01 in the first direction to the first line segment LS1 is less than or equal to 1 / 2. Figure 4 In the description, the length of the distance D1 is 2 / 3L, but the invention is not limited thereto. For example, the length of the distance D1 may range from 5 / 9L to 7 / 9L.

[0049] like Figure 4As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, a plurality of pixel groups 01 are arranged in an array, including a plurality of rows and a plurality of columns, for example, a plurality of first pixel groups 011 located in odd rows and a plurality of second pixel groups 012 located in even rows. For example, the pixel groups in even rows and the pixel groups in odd rows are arranged in a staggered manner. The second line segment LS2 may extend along the second direction Y. For example, in order to achieve dense pixel arrangement in the column direction, in adjacent odd rows or in adjacent even rows, the length D2 of the center line L14 of the adjacent first sub-pixel 111 and the fourth sub-pixel 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 in adjacent even rows, the ratio of the length D2 of the center line L14 of 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 greater than or equal to 1 and less than or equal to 3.

[0050] For example, in adjacent odd rows or in adjacent even rows, the length D2 of the center line connecting the adjacent first sub-pixels 111 and the 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. Thus, a pixel structure in which 6 pixel groups are closely packed around one pixel group can be formed. The pixel groups in odd rows and the pixel groups in even rows are staggered. For example, the length of half the pixel group in the first direction Y can be staggered in the first direction Y, for example, the staggered length is L, but is not limited thereto. For example, in adjacent odd rows or in adjacent even rows, the ratio of the length D2 of the center line connecting the adjacent first sub-pixels 111 and the fourth sub-pixels 114 in two adjacent pixel groups 01 in the second direction to the length of the second line segment LS2 is greater than or equal to 1 and less than or equal to 3.

[0051] like Figure 4 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, the extension line of the second line segment LS2 of each pixel group 01 passes through the midpoint C0 of the center line LSC of two pixel groups 01 adjacent to the pixel group 01 and located in the same row in the second direction Y. The center of each pixel group 01 is C1, and the line connecting the centers C1 of two adjacent pixel groups 01 is the center 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.

[0052] For example, the extension line of the second line segment LS2 of each first pixel group 011 passes through the center C5 of the center line LS3 of the adjacent third sub-pixels 113 and the second sub-pixels 112 of two second pixel groups 012 adjacent to the first pixel group 011 and located in the same row. For example, the center C5 and the center C0 may be the same point.

[0053] like Figure 4 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, in adjacent odd rows or adjacent even rows, the intersection point IP1 of the center line LS4 of two third sub-pixels 113 in two adjacent pixel groups 01 arranged in the second direction Y and the first line segment LS1 in the pixel group 01 located between the two third sub-pixels 113 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.

[0054] For example, in adjacent odd rows, the intersection point IP1 of the center line LS4 of two third sub-pixels 113 of adjacent first pixel groups 011 located 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 first line segment LS1 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 may also be replaced by the second sub-pixel.

[0055] like Figure 4 As shown, according to the pixel arrangement structure provided by 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, and the closest distance between the third sub-pixel 113 and the fourth sub-pixel 114 is L4, L1= L2= L3= L4.

[0056] like Figure 4 As shown, according to the pixel arrangement structure provided by 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 the pixel group adjacent to it in the second direction and not in the same row are L5 and L6, respectively, and L5 = L6.

[0057] For example, in one embodiment, L1= L2= L3= L4= L5= L6.

[0058] For example, L1, L2, L3, L4, L5 and L6 can be found in Fig. 7A and 7B There is a note about the minimum process spacing d. Each closest distance is the minimum distance between two sub-pixels. For example, in actual production, L1, L2, L3, L4, L5 and L6 can be made as close to the minimum process spacing d as possible.

[0059] like Figure 4As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, in adjacent sub-pixels, the relative sides are approximately parallel or the angle between them 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.

[0060] like Figure 5A As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, the first sub-pixel 111 and the fourth sub-pixel 114 are both strip-shaped, and the extension direction A1 of the first sub-pixel 111 does not overlap with the extension direction A2 of the fourth sub-pixel 114. For example, the extension direction A1 of the first sub-pixel 111 intersects or has an angle with the extension 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 with the first direction X as the axis of symmetry and are tilted at a certain angle. For example, the angle of inclination and the first direction are in the range of 30°-50°, and further for example, 45°, but not limited thereto. For example, the extension direction A1 of the first sub-pixel 111 may be the long axis direction of the first sub-pixel 111, but not limited thereto. For example, the extension direction A2 of the fourth sub-pixel 114 may be the long axis direction of the fourth sub-pixel 114, but not limited thereto.

[0061] like Figure 5A As shown, according to the pixel arrangement structure provided by 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 symmetrically arranged relative 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 asymmetrically arranged relative to the second line segment LS2.

[0062] 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 the present invention is not limited thereto.

[0063] For example, in the embodiments of the present disclosure, a stripe means that the length in one direction is greater than the length in another direction, or the size in one direction is greater than the size in other directions. The stripe is not limited to a rectangle, and may be other shapes, for example, an elongated hexagon, an elongated ellipse, a trapezoid, or other shapes. In the embodiments of the present disclosure, the shape of each sub-pixel is not limited to a regular shape, and may also be an irregular shape.

[0064] For example, the angle between the extension direction A1 of the first sub-pixel 111 and the extension direction A2 of the fourth sub-pixel 114 is 70°-100°, further, 80°-95°, and further, 90° (right angle), so that the first sub-pixel 111 and the fourth sub-pixel 114 with a larger area can be used to increase the light output area and facilitate the stretching of the mask during the production of the mask. For example, in the case of a right angle, a deviation of several degrees above or below can be allowed. For example, it can deviate by 5° above or below 90°.

[0065] Figure 5B A pixel arrangement structure provided according to one or more embodiments of the present disclosure is shown, wherein the angle between the extension direction A1 of the first sub-pixel 111 and the extension 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.

[0066] Figure 6 The pixel arrangement structure provided according to one or more embodiments of the present disclosure is shown. Figure 6 As shown, the second sub-pixel 112 and the third sub-pixel 113 may be in a rhombus or approximately rhombus shape. Approximate rhombuses include, for example, rounded rhombuses, chamfered rhombuses, etc., but are not limited thereto. Sub-pixel shapes in a rhombus or approximately rhombus shape are more conducive to dense pixel arrangement. For example, the first sub-pixel can be relatively symmetrically surrounded by the third sub-pixel and the second sub-pixel, with the long sides of the first sub-pixel 111 facing the second sub-pixel 112 and the short sides facing the third sub-pixel 113, so as to maximize the uniformity of the pixel arrangement. The more uniform arrangement of the first sub-pixel 111 can improve the color edge to a certain extent, which is conducive to the realization of HPPI and can increase the pixel aperture ratio as much as possible.

[0067] The shape of each sub-pixel is not limited to the above, and the shape of the sub-pixel can be adjusted as needed. Area maximization is the main principle for determining the shape of the sub-pixel.

[0068] To avoid color mixing, the sub-pixel spacing of different colors needs to be greater than the minimum process spacing d of the patterning process. Considering the symmetry requirements of some special processes, for example, the FMM network hopes that the opening pattern and distribution are symmetrical. The shapes of the first sub-pixel and the fourth sub-pixel can be symmetrical pentagons with right-angled bottom angles (such as Figure 2 As shown in Figure 1). It can be seen that the spacing between the second and third sub-pixels between adjacent pixel groups using symmetrical sub-pixels is significantly larger than the spacing between other sub-pixels of different colors (the minimum process spacing d), that is, there is still available area in the design. When the FMM stretching technology allows or other processes that are not sensitive to symmetry (such as CF) are used, an asymmetric sub-pixel shape can be used to achieve the maximum sub-pixel area.

[0069] Fig. 7A and Figure 7B FIG. 2 shows a pixel arrangement structure provided according to one or more embodiments of the present disclosure. Fig. 7A and Figure 7B As shown, under the condition that an asymmetric sub-pixel shape is allowed, according to different minimum process spacings d of the imaging process, the second sub-pixel 112 and the third sub-pixel 113 can be a right-angled trapezoid or a right-angled trapezoid with sharp angles cut off to maximize the area.

[0070] like Fig. 7A As shown, since the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both right-angled trapezoids, compared with the case where the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both hexagons (two right-angled bottom angle symmetrical pentagons form a hexagon together), the acute angle portion 190 of the second sub-pixel 112 and the third sub-pixel 113 can further increase the area 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 arrangement structure can improve the space utilization rate within the pixel group.

[0071] like Figure 7B As shown, the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both isosceles trapezoids with sharp angles cut off. Therefore, under the condition of a certain process precision, that is, under the condition of a certain distance between the first sub-pixel 111 and the second sub-pixel 112 and the third sub-pixel 113, the areas of the second sub-pixel 112 and the third sub-pixel 113 are increased, thereby improving the utilization rate of the space in the pixel group.

[0072] According to the pixel arrangement structure provided by 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 an approximate rectangle. The approximate rectangle includes, for example, a rounded rectangle, but is not limited thereto.

[0073] At least one embodiment of the present disclosure provides a display substrate including any of the above-mentioned pixel arrangement structures.

[0074] Figure 8 FIG. 2 shows a display substrate provided according to one or more embodiments of the present disclosure. Figure 8 As shown, in the same row of pixel groups, the third sub-pixel 113 and the first sub-pixel 111 can be driven by the first driving line DL1, and the second sub-pixel 112 and the fourth sub-pixel 114 can 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.

[0075] like Figure 8As shown, the first sub-pixel 111 and the fourth sub-pixel 114 in the odd-numbered column pixel group can use the first data line DT1 to input data signals, and the second sub-pixel 112 and the third sub-pixel 113 located between two adjacent first data lines DT1 can use the second data line DT2 to input data signals. 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.

[0076] For example, a pixel unit group 01 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 share the third sub-pixel 111 or the fourth sub-pixel 114 adjacent thereto to form a virtual pixel. Display is achieved by sharing sub-pixels.

[0077] At least one embodiment of the present disclosure provides a display device, including any of the above-mentioned display substrates. Therefore, the resolution of the display device can be improved, and thus a display device with real high resolution can be provided. In addition, since the pixel arrangement structure has better symmetry, the display effect of the display device is better.

[0078] For example, in some examples, the display device may be any product or component with a display function, such as a smart phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0079] There are a few points to note:

[0080] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0081] (2) Unless there is a conflict, the features of the same embodiment or different embodiments of the present disclosure may be combined with each other.

[0082] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A pixel arrangement structure comprising a plurality of pixel groups; Each pixel group includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; In the pixel group, a line connecting 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 arranged on both sides of the first line segment; A line connecting the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment; The length of the second line segment is smaller than the length of the first line segment, The first line segment extends along a first direction, and the second line segment extends along a second direction; 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-numbered rows and the pixel groups in the odd-numbered rows are arranged in a staggered manner; In adjacent odd rows or adjacent even rows, the length of a line connecting the centers of adjacent first sub-pixels and fourth sub-pixels in two adjacent pixel groups in the second direction is greater than the length of the second line segment, The first sub-pixel and the fourth sub-pixel in the odd-numbered column pixel group use the first data line to input data signals, and the second sub-pixel and the third sub-pixel located between two adjacent first data lines use the second data line to input data signals, the first data line and the second data line both extend along the second direction, and the second sub-pixel and the third sub-pixel overlap with the second data line.

2. The pixel arrangement structure according to claim 1, wherein: A ratio of the length of the second line segment to the length of the first line segment is less than or equal to 3 / 4.

3. The pixel arrangement structure according to claim 1, wherein: The second line segment and the first line segment bisect each other perpendicularly.

4. The pixel arrangement structure according to claim 1, wherein: A ratio of the length of the second line segment to the length of the first line segment is greater than or equal to 3 / 8.

5. The pixel arrangement structure according to claim 1, wherein: In the pixel group, the first sub-pixel and the fourth sub-pixel are both strip-shaped, and an extension direction of the first sub-pixel does not overlap with an extension direction of the fourth sub-pixel.

6. The pixel arrangement structure according to claim 5, wherein: An included angle between an extension direction of the first sub-pixel and an extension direction of the fourth sub-pixel is 70°-100°.

7. The pixel arrangement structure according to claim 5, wherein: The first sub-pixel and the fourth sub-pixel are arranged symmetrically with respect to the first line segment, and / or the second sub-pixel and the third sub-pixel are arranged symmetrically with respect to the second line segment.

8. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The length of a line connecting the centers of 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.

9. The pixel arrangement structure according to claim 8, wherein: A ratio of a length of a line connecting centers of adjacent second sub-pixels and third sub-pixels in two adjacent pixel groups in the first direction to the first line segment is less than or equal to 1 / 2; and / or, In adjacent odd rows or in adjacent even rows, a ratio of a length of a center line connecting adjacent first subpixels and fourth subpixels in two adjacent pixel groups in the second direction to a length of the second line segment is greater than or equal to 1 and less than or equal to 3.

10. The pixel arrangement structure according to claim 8, wherein: An extension line of the second line segment of each pixel group passes through a midpoint of a line connecting centers of two pixel groups adjacent to the pixel group in the second direction and located in the same row.

11. The pixel arrangement structure according to claim 10, wherein: In adjacent odd rows or in adjacent even rows, the intersection of a line connecting the centers of two third sub-pixels in two adjacent pixel groups arranged in the second direction and a first line segment in the pixel group between the two third sub-pixels is located between the center of the first line segment and the center of the second sub-pixel.

12. The pixel arrangement structure according to claim 8, wherein: In the same pixel group, the shortest distance between the second sub-pixel and the first sub-pixel is L1, the shortest distance between the second sub-pixel and the fourth sub-pixel is L2, the shortest distance between the third sub-pixel and the first sub-pixel is L3, and the shortest distance between the third sub-pixel and the fourth sub-pixel is L4, L1= L2= L3= L4.

13. The pixel arrangement structure according to claim 12, wherein: The shortest distances between the first subpixel or the fourth subpixel and the second subpixel and the third subpixel in the pixel group adjacent to it in the second direction and not in the same row are L5 and L6 respectively, and L5=L6.

14. The pixel arrangement structure according to claim 12 or 13, wherein: In adjacent sub-pixels, each of the opposite sides is approximately parallel or has an angle less than 45°, and the adjacent sub-pixels include any adjacent two of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel.

15. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The first sub-pixel and the fourth sub-pixel are sub-pixels of the same color.

16. The pixel arrangement structure according to claim 15, wherein: The first sub-pixel and the fourth sub-pixel are green sub-pixels.

17. The pixel arrangement structure according to claim 16, wherein: One of the second sub-pixel and the third sub-pixel is a red sub-pixel, and the other of the second sub-pixel and the third sub-pixel is a blue sub-pixel.

18. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The first sub-pixel and the fourth sub-pixel are both sub-pixels of colors that are sensitive to human eyes.

19. The pixel arrangement structure according to claim 18, wherein: The second sub-pixel and the third sub-pixel are both sub-pixels of colors that are insensitive to human eyes.

20. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The length of the first line segment is greater than the length of a line connecting the centers of adjacent second sub-pixels and third sub-pixels in two adjacent pixel groups in the first direction.

21. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The first sub-pixel and the fourth sub-pixel overlap the first data line.

22. The pixel arrangement structure according to any one of claims 1 to 7, wherein: The first data line is in a straight line shape, and the second data line is in a zigzag line shape.

23. The pixel arrangement structure according to any one of claims 1 to 7, wherein: In the same row of pixel groups, the third sub-pixel and the first sub-pixel are driven by the first driving line, and the second sub-pixel and the fourth sub-pixel are driven by the second driving line.

24. The pixel arrangement structure according to claim 23, wherein: The first driving line extends along the first direction, and the second driving line extends along the first direction.

25. The pixel arrangement structure according to claim 24, wherein: The first driving line is in a zigzag shape, and the second driving line is in a zigzag shape.

26. The pixel arrangement structure according to claim 23, wherein: The first driving line overlaps the first sub-pixel, the second sub-pixel, and the third sub-pixel, and the second driving line overlaps the second sub-pixel, the third sub-pixel, and the fourth sub-pixel.

27. The pixel arrangement structure according to any one of claims 1 to 7, wherein: Half of the distance between the center lines of two third sub-pixels adjacent to the same second sub-pixel in the first direction or half of the distance between the center lines of two second sub-pixels adjacent to the same third sub-pixel in the first direction is L, The length of the second line segment ranges from 1 / 2L to L, and in adjacent odd rows or in adjacent even rows, the length of the center line connecting adjacent first sub-pixels and fourth sub-pixels in two adjacent pixel groups in the second direction ranges from L to 3 / 2L.

28. A display substrate comprising the pixel arrangement structure according to any one of claims 1 to 27.

29. A display device comprising the display substrate according to claim 28.

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