CN109585501B - Pixel arrangement structure, display panel and display device - Google Patents

Pixel arrangement structure, display panel and display device Download PDF

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Publication number
CN109585501B
CN109585501B CN201811209593.7A CN201811209593A CN109585501B CN 109585501 B CN109585501 B CN 109585501B CN 201811209593 A CN201811209593 A CN 201811209593A CN 109585501 B CN109585501 B CN 109585501B
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pixel
sub
pixels
repeating unit
unit
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CN109585501A (en
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刘明星
王徐亮
甘帅燕
高峰
张玄
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to PCT/CN2019/075674 priority patent/WO2020077926A1/en
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/351Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • H01L27/153Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels

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  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention relates to a pixel arrangement structure, a display panel and a display device. The pixel arrangement structure comprises a plurality of repeating units which are arranged in an array mode along a first direction and a second direction which are intersected, wherein each repeating unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are different in color, and the number ratio is 2:2:2: 1; the first sub-pixels and the second sub-pixels are arranged in a staggered mode along the second direction, the other column comprises two third sub-pixels and one fourth sub-pixel, and the fourth sub-pixel is located between the two third sub-pixels. The invention has compact arrangement space of each sub-pixel and high pixel density, and improves the display effect of the display device.

Description

Pixel arrangement structure, display panel and display device
Technical Field
The invention relates to the technical field of display, in particular to a pixel arrangement structure, a display panel and a display device.
Background
The pixel density is an important index of the display device, and is defined as the number of pixels that can be displayed in a unit area, and the higher the pixel density is, the finer the image displayed by the display device is, the more the details of the display are, and the better the display effect is.
Disclosure of Invention
The invention aims to provide a pixel arrangement structure, a display panel and a display device, wherein four sub-pixels of the pixel arrangement structure are compact in arrangement space, and the effective utilization rate of a display area of the display panel and the display effect of the display device can be improved.
In one aspect, an embodiment of the present invention provides a pixel arrangement structure, where the pixel arrangement structure includes a plurality of repeating units arranged in an array along a first direction and a second direction that intersect with each other, each repeating unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel that are different in color, and a ratio of the number of the first sub-pixel, the number of the second sub-pixel, the number of the third sub-pixel, and the number of the fourth sub-pixel is 2:2:2: 1; the first sub-pixels and the second sub-pixels are arranged in a staggered mode along the second direction, the other column comprises two third sub-pixels and one fourth sub-pixel, and the fourth sub-pixel is located between the two third sub-pixels.
According to an aspect of the embodiment of the present invention, in the repeating unit, the center point of the third sub-pixel deviates from a perpendicular bisector of a connecting line between the center point of the first sub-pixel and the center point of the second sub-pixel along a direction away from the fourth sub-pixel, a distance between the center point of the fourth sub-pixel and the perpendicular bisector is a first distance, a distance between the center point of the fourth sub-pixel and the center point of the third sub-pixel is a second distance, and the first distance is smaller than the second distance.
According to an aspect of the embodiment of the invention, in the repeating unit, an area ratio of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel is 1:2:2: 1.
According to an aspect of the embodiment of the present invention, in the repeating unit, a sum of sizes of the first sub-pixel and the second sub-pixel in the second direction is equal to a size of the third sub-pixel in the second direction, and a size of the first sub-pixel in the second direction is equal to a size of the fourth sub-pixel in the second direction.
According to an aspect of the embodiment of the present invention, the color of the first sub-pixel is red, the color of the second sub-pixel is green, the color of the third sub-pixel is blue, and the color of the fourth sub-pixel is any one of cyan, yellow, and white.
According to one aspect of an embodiment of the present invention, the plurality of repeating units are aligned in translation in the first direction and in translation in the second direction to form the pixel array.
According to an aspect of an embodiment of the present invention, a plurality of repeating units are arranged in a pixel array; in the pixel array, a plurality of repeating units are arranged in m columns in a first direction, n repeating units are arranged in each column, wherein the repeating unit of the jth column is arranged in alignment with the repeating unit of the j +2 th column, and preferably, a first sub-pixel of the ith repeating unit in the jth column is arranged in alignment with a first second sub-pixel of the ith repeating unit in the j +1 th column in a second direction; more preferably, the first sub-pixel of the ith repeating unit in the jth column and the second sub-pixel of the ith repeating unit in the j +1 th column are aligned in the second direction, and j is greater than or equal to 1 and less than m, i is greater than or equal to 1 and less than or equal to n, and m, n, i and j are integers.
According to an aspect of the embodiments of the present invention, the repeating unit includes a first pixel unit and a second pixel unit adjacently arranged in the second direction, each of the first pixel unit and the second pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the fourth sub-pixel is shared by the first pixel unit and the second pixel unit.
On the other hand, embodiments of the present invention further provide a display panel, which includes any one of the pixel arrangement structures described above.
On the other hand, the embodiment of the invention also provides a display device, which comprises the display panel.
According to the pixel arrangement structure, the display panel and the display device, the pixel arrangement structure is based on the original three-color sub-pixel arrangement structure, a new fourth sub-pixel is added by fully utilizing the vacant space between two third sub-pixels in each repeating unit in the second direction, so that the sub-pixel arrangement space in each repeating unit is compact, the pixel density is improved, the effective utilization rate of the display area of the display panel is improved, and the display effect of the display device is improved.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a repeating unit in a pixel arrangement structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pixel arrangement in which the repeating units shown in FIG. 1 are arranged in a first arrangement;
FIG. 3 is a schematic diagram of a pixel arrangement in which the repeating units shown in FIG. 1 are arranged in a second arrangement;
fig. 4 is a schematic diagram of another pixel arrangement in which the repeating units shown in fig. 1 are configured in a second arrangement.
Wherein:
10-a repeat unit; 1-a first sub-pixel; 2-a second sub-pixel; 3-a third sub-pixel; 4-a fourth sub-pixel; x-a first direction; y-a second direction; p1, P2, P3, P4-center point of sub-pixel; l1-perpendicular bisector; d 1-first distance; d 2-second distance; u1 — first pixel cell; u2-second pixel cell.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
For a better understanding of the present invention, embodiments of the present invention are described in detail below with reference to fig. 1 to 4.
Referring to fig. 1, an embodiment of the present invention provides a pixel arrangement including a plurality of repeating units 10 arranged in an array along a first direction X and a second direction Y intersecting each other, as indicated by a dotted-line frame in fig. 1. The repeating unit 10 includes a first sub-pixel 1, a second sub-pixel 2, a third sub-pixel 3 and a fourth sub-pixel 4 with different colors, and the number ratio of the first sub-pixel 1, the second sub-pixel 2, the third sub-pixel 3 and the fourth sub-pixel 4 is 2:2:2: 1.
The sub-pixels of the repeating unit 10 are arranged in two columns along the second direction Y, wherein one column includes two first sub-pixels 1 and two second sub-pixels 2, and the first sub-pixels 1 and the second sub-pixels 2 are arranged alternately along the second direction Y, and the other column includes two third sub-pixels 3 and one fourth sub-pixel 4, and one fourth sub-pixel 4 is located between the two third sub-pixels 3.
The first direction X and the second direction Y may be intersected at any preset angle, and an included angle between the first direction X and the second direction Y in the embodiment of the present invention is 90 °, so that the sub-pixels of the plurality of repeating units 10 may be repeatedly arranged along the row direction and the column direction, and the structure is simple and the manufacturing is convenient.
According to the pixel arrangement structure provided by the embodiment of the invention, on the basis of a three-color pixel arrangement structure, a new fourth sub-pixel 4 is added by fully utilizing the vacant space of two third sub-pixels 3 in each repeating unit 10 in the second direction Y, so that the sub-pixel arrangement space in each repeating unit 10 is compact, the sub-pixel density is improved, the effective utilization rate of the display area of the display panel is further improved, and the display effect of the display device adopting the display panel is improved.
The specific structure of the pixel arrangement structure provided by the embodiment of the present invention is described in further detail below with reference to the accompanying drawings.
Referring again to fig. 1, based on the pixel arrangement structure provided by the embodiment of the present invention, the repeating unit 10 includes a first pixel unit U1 and a first pixel unit U2 adjacently arranged along the second direction Y, the first pixel unit U1 and the first pixel unit U2 each include a first sub-pixel 1, a second sub-pixel 2 and a third sub-pixel 3, and the fourth sub-pixel 4 is shared by the first pixel unit U1 and the first pixel unit U2, according to the concept of color sharing. The color of the first sub-pixel 1, the color of the second sub-pixel 2, and the color of the third sub-pixel 3 are any one of red, green, and blue, respectively, and the color of the fourth sub-pixel may be any one of cyan, yellow, and white.
When the color of the fourth sub-pixel 4 is cyan or yellow, the first pixel unit U1 and the first pixel unit U2 composed of the red sub-pixel R, the green sub-pixel G, the blue sub-pixel B, and the fourth sub-pixel N may improve the color gamut of the entire display panel. When the color of the fourth sub-pixel 4 is white, the first pixel unit U1 and the first pixel unit U2, which are composed of the red sub-pixel R, the green sub-pixel G, the blue sub-pixel B and the white sub-pixel N, can improve the brightness of the whole display panel, reduce the brightness of the single color of red, green and blue in a single sub-pixel, increase the luminous efficiency and the service life of the display panel, and improve the display effect of the display device.
In the repeating unit 10, the center point P3 of the third sub-pixel 3 is deviated from the perpendicular bisector L1 of the connection line between the center point P1 of the first sub-pixel 1 and the center point P2 of the second sub-pixel 2 in the direction away from the fourth sub-pixel 4, the distance between the center point P4 of the fourth sub-pixel 4 and the perpendicular bisector L1 is a first distance d1, the distance between the center point P4 of the fourth sub-pixel 4 and the center point P3 of the third sub-pixel 3 is a second distance d2, and the first distance d1 is smaller than the second distance d 2. The center points P1, P2, P3 and P4 are the geometric centers of the corresponding sub-pixels, i.e. the luminance centers of the sub-pixels that the human eyes can visually perceive, respectively.
In the repeating unit 10, the shape of each sub-pixel may be a rectangle, a diamond, a circle, or the like. In a specific embodiment, the first sub-pixel 1, the third sub-pixel 3 and the fourth sub-pixel 4 are rectangular in shape, and the second sub-pixel 2 is square in shape, as shown in fig. 1.
In the repeating unit 10, the area of the first sub-pixel 1 is smaller than that of the second sub-pixel 2, and the area of the third sub-pixel 3 is larger than that of the fourth sub-pixel 4. Preferably, the area ratio of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel is 1:2:2:1, so that the pixel arrangement is more compact and the pixel density is improved.
In a specific embodiment, the size of the third sub-pixel 3 along the second direction Y is larger than the size of the first sub-pixel 1, the second sub-pixel 2, and the fourth sub-pixel 4 along the second direction Y, and the size of the third sub-pixel 3 along the first direction X is smaller than the size of the first sub-pixel 1, the second sub-pixel 2, and the fourth sub-pixel 4 along the first direction X. In addition, the size of the second sub-pixel 2 in the second direction Y is larger than the size of the first sub-pixel 1 in the second direction Y. Preferably, the sum of the sizes of the first sub-pixel 1 and the second sub-pixel 2 along the second direction Y is equal to the size of the third sub-pixel 3 along the second direction Y.
The pixel arrangement structure according to the embodiment of the present invention will be described in further detail below by taking a pixel unit in which the first sub-pixel 1 is a red sub-pixel R, the second sub-pixel 2 is a green sub-pixel G, the third sub-pixel 3 is a blue sub-pixel B, and the fourth sub-pixel 4 is any one of cyan, yellow, and white sub-pixels as an example.
Referring to fig. 2, a pixel arrangement structure is shown in which a plurality of repeating units 10 are arranged in a first arrangement, i.e., the plurality of repeating units 10 are aligned in a first direction X and a second direction Y in a translation manner to form a pixel array.
As shown in fig. 2, the first column of subpixels of each repeating unit 10 in the second direction Y are sequentially a red subpixel R, a green subpixel G, a red subpixel R, and a green subpixel G, which are arranged in a staggered manner, and the second column of subpixels are sequentially a blue subpixel B, a fourth subpixel N, and a blue subpixel B. The plurality of repeating units 10 are translationally expanded in the first direction X and the second direction Y, respectively, to form a pixel array.
In the whole pixel array, the red sub-pixels R and the green sub-pixels G are arranged in a column along the second direction Y and are arranged in a staggered way; the blue sub-pixel B and the fourth sub-pixel N are arranged along the second direction Y, and a row of the fourth sub-pixel N is arranged every two adjacent rows of the blue sub-pixels B in the second direction Y.
As a whole, the fourth sub-pixels N shared by the first pixel unit U1 and the first pixel unit U2 in the plurality of repeating units 10 are arranged in a line along the first direction X, as shown by the two-dot chain line in fig. 2, so that the display effect of the display device using the display panel is improved compared to the three-color pixel arrangement structure in the prior art.
In addition, two adjacent blue sub-pixels are arranged in a row, and the corresponding metal mask plates can share one opening, so that the opening rate of the metal mask plates is improved, and the manufacturing difficulty of the metal mask plates is reduced.
Referring to fig. 3, a pixel arrangement is shown in which a plurality of repeating units 10 are arranged in a second arrangement. The plurality of repeating units 10 in the pixel arrangement structure are arranged into a pixel array, in the pixel array, the plurality of repeating units 10 are arranged in m rows in a first direction X, and each row is provided with n repeating units 10, wherein the repeating unit 10 in the jth row is arranged in alignment with the repeating unit 10 in the j +2 th row, the ith repeating unit in the jth row and the ith repeating unit in the j +1 th row are arranged in a staggered mode in a second direction Y, j is more than or equal to 1 and less than m, i is more than or equal to 1 and less than or equal to n, and m, n, i and j are integers.
In the pixel array, the repeating units 10 in the odd-numbered columns are aligned, the repeating units 10 in the even-numbered columns are aligned, and the repeating units 10 in the adjacent odd-numbered columns and the repeating units 10 in the even-numbered columns are arranged in a staggered manner in the second direction Y. Preferably, the first sub-pixel 1 of the ith repeating unit 10 in the jth column and the first second sub-pixel 2 of the ith repeating unit 10 in the j +1 th column are aligned in the second direction Y. The first sub-pixel 1 of the ith repeating unit 10 in the jth column is a red sub-pixel R in the first pixel unit U1, the first second sub-pixel 2 of the ith repeating unit 10 in the jth +1 column is a green sub-pixel G in the first pixel unit U1, and the upper edges of the red sub-pixel R and the green sub-pixel G are aligned in the second direction Y, as shown in fig. 3.
Taking m as 4 and n as 3 as an example, the pixel arrangement structure is 4 columns in the first direction X, and 3 repeating units 10 are arranged in each column as a pixel array, wherein the repeating units 10 in the 1 st and 3 rd columns are arranged in alignment, the repeating units 10 in the 2 nd and 4 th columns are arranged in alignment, and the upper edge of the first red sub-pixel R of the 1 st repeating unit 10 in the 1 st column is arranged in alignment with the upper edge of the first green sub-pixel G of the 1 st repeating unit 10 in the 2 nd column.
Therefore, in the whole pixel array, the red sub-pixels R and the green sub-pixels G are arranged in columns in the first direction X and are arranged in a staggered manner in the second direction Y; the blue sub-pixels B and the fourth sub-pixels N are arranged in a column in the first direction X, and one fourth sub-pixel N is arranged every two adjacent blue sub-pixels B in the second direction Y, and the fourth sub-pixels N shared by the first pixel unit U1 and the first pixel unit U2 in the plurality of repeating units 10 are arranged in a multi-row wavy shape, as shown by a solid wavy line in fig. 3, compared with the case where the fourth sub-pixels N in fig. 2 are arranged in a row in the first direction X, the distribution of the fourth sub-pixels N in the second direction Y of the entire pixel array is expanded, so that the distribution uniformity of the fourth sub-pixels N is improved, and the display effect of the display device is improved.
Referring to fig. 4, another pixel arrangement is shown in which a plurality of repeating units 10 are configured in a second arrangement, which is similar to the pixel arrangement of fig. 3 except that a first sub-pixel 1 of an ith repeating unit 10 in a j-th column is aligned with a second sub-pixel 2 of an ith repeating unit 10 in a j + 1-th column in a second direction Y.
In the pixel array, the repeating units 10 in the odd-numbered columns are aligned, the repeating units 10 in the even-numbered columns are aligned, and the repeating units 10 in the adjacent odd-numbered columns and the repeating units 10 in the even-numbered columns are arranged in a staggered manner in the second direction Y. Preferably, the first sub-pixel 1 of the ith repeating unit 10 in the jth column and the second sub-pixel 2 of the ith repeating unit 10 in the j +1 th column are aligned in the second direction Y. The first sub-pixel 1 of the ith repeating unit 10 in the jth column is a red sub-pixel R in the first pixel unit U1, the second sub-pixel 2 of the ith repeating unit 10 in the jth +1 column is a green sub-pixel G in the second pixel unit U2, and the upper edges of the red sub-pixel R and the green sub-pixel G are aligned in the second direction Y, as shown in fig. 4.
Still taking m-4 and n-3 as an example, the pixel arrangement structure is arranged in 4 columns in the first direction X, each column has 3 repeating units 10, wherein the repeating units 10 in the 1 st and 3 rd columns are arranged in alignment, the repeating units 10 in the 2 nd and 4 th columns are arranged in alignment, and the upper edge of the first red sub-pixel R of the 2 nd repeating unit 10 in the 1 st column is arranged in alignment with the upper edge of the second green sub-pixel G of the 1 st repeating unit 10 in the 2 nd column.
Therefore, in the whole pixel array, the red sub-pixels R and the green sub-pixels G are arranged in columns in the first direction X and are arranged in a staggered manner in the second direction Y; the blue subpixels B and the fourth subpixels N are arranged in columns in the first direction X, and one fourth subpixel N is arranged every two adjacent blue subpixels B in the second direction Y, and every four fourth subpixels N are arranged in a diamond shape in the fourth subpixels N shared by the first pixel unit U1 and the first pixel unit U2 in the plurality of repeating units 10, as shown by solid lines in fig. 4, compared with the fourth subpixels N arranged in a multi-row wavy shape in fig. 3, the fourth subpixels N are more uniformly distributed in the first direction X and the second direction Y of the entire pixel array, and the display effect of the display device is further improved.
It is understood that the misalignment portion between the ith repeating unit in the odd-numbered column and the ith repeating unit in the adjacent even-numbered column in the second direction Y in the pixel array may also have other different embodiments, and is not limited to the embodiment shown in fig. 3 and fig. 4, and will not be described again.
In addition, the embodiment of the invention also provides a display panel, which comprises any one of the pixel arrangement structures. The embodiment of the invention also provides a display device which comprises the display panel.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (11)

1. A pixel arrangement, characterized in that the pixel arrangement comprises a plurality of repeating units (10) arranged in an array along intersecting first (X) and second (Y) directions;
the repeating unit (10) comprises a first sub-pixel (1), a second sub-pixel (2), a third sub-pixel (3) and a fourth sub-pixel (4) which are different in color, and the number ratio of the first sub-pixel (1), the second sub-pixel (2), the third sub-pixel (3) to the fourth sub-pixel (4) is 2:2:2: 1;
wherein the sub-pixels of the repeating unit (10) are arranged in two columns along the second direction (Y), wherein one column comprises two of the first sub-pixels (1) and two of the second sub-pixels (2), and the first sub-pixels (1) and the second sub-pixels (2) are arranged alternately along the second direction (Y), and the other column comprises two of the third sub-pixels (3) and one of the fourth sub-pixels (4), and one of the fourth sub-pixels (4) is located between the two of the third sub-pixels (3).
2. A pixel arrangement according to claim 1, wherein in the repeating unit (10), the center point (P3) of the third sub-pixel (3) is displaced from a perpendicular bisector (L1) of a line between the center point (P1) of the first sub-pixel (1) and the center point (P2) of the second sub-pixel (2) in a direction away from the fourth sub-pixel (4), the distance between the center point (P4) of the fourth sub-pixel (4) and the perpendicular bisector (L1) is a first distance (d1), the distance between the center point (P4) of the fourth sub-pixel (4) and the center point (P3) of the third sub-pixel (3) is a second distance (d2), and the first distance (d1) is smaller than the second distance (d 2).
3. A pixel arrangement according to claim 1, wherein the area ratio of the first (1), second (2), third (3) and fourth (4) sub-pixels in the repeating unit (10) is 1:2:2: 1.
4. A pixel arrangement according to claim 3, wherein in the repeating unit (10), the sum of the dimensions of the first (1) and second (2) sub-pixels in the second direction (Y) is equal to the dimension of the third sub-pixel (3) in the second direction (Y), and the dimension of the first sub-pixel (1) in the second direction (Y) is equal to the dimension of the fourth sub-pixel (4) in the second direction (Y).
5. A pixel arrangement according to any one of claims 1 to 4, wherein the first sub-pixel (1) is red in colour, the second sub-pixel (2) is green in colour, the third sub-pixel (3) is blue in colour and the fourth sub-pixel is any one of cyan, yellow and white in colour.
6. A pixel arrangement according to claim 1, wherein a plurality of said repeating units (10) are aligned in translation in said first direction (X) and in said second direction (Y) to form a pixel array.
7. A pixel arrangement according to claim 1, wherein a plurality of said repeating units (10) are arranged in a pixel array;
in the pixel array, a plurality of the repeating units (10) are arranged in m rows in the first direction (X), and n repeating units (10) are arranged in each row, wherein the repeating unit (10) in the j-th row is arranged in alignment with the repeating unit (10) in the j + 2-th row, the first sub-pixel (1) of the ith repeating unit (10) in the j-th row is arranged in alignment with the first sub-pixel (2) of the ith repeating unit (10) in the j + 1-th row in the second direction (Y), j is more than or equal to 1 and less than or equal to m, i is more than or equal to 1 and less than or equal to n, and m, n, i and j are integers.
8. A pixel arrangement according to claim 1, wherein a plurality of said repeating units (10) are arranged in a pixel array;
in the pixel array, a plurality of the repeating units (10) are arranged in m rows in the first direction (X), and n repeating units (10) are arranged in each row, wherein the repeating unit (10) in the j-th row is arranged in alignment with the repeating unit (10) in the j + 2-th row, the first sub-pixel (1) of the ith repeating unit (10) in the j-th row is arranged in alignment with the second sub-pixel (2) of the ith repeating unit (10) in the j + 1-th row in the second direction (Y), j is more than or equal to 1 and less than or equal to m, i is more than or equal to 1 and less than or equal to n, and m, n, i and j are integers.
9. A pixel arrangement according to any one of claims 6 to 8, wherein the repeating unit (10) comprises a first pixel unit (U1) and a second pixel unit (U2) arranged adjacent along the second direction (Y), the first pixel unit (U1) and the second pixel unit (U2) each comprising the first sub-pixel (1), the second sub-pixel (2) and the third sub-pixel (3), the fourth sub-pixel (4) being shared by the first pixel unit (U1) and the second pixel unit (U2).
10. A display panel comprising a pixel arrangement according to any one of claims 1 to 9.
11. A display device characterized by comprising the display panel according to claim 10.
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