Pixel structure and displaying method thereof, and related display apparatus

• US 10,043,433 B2
• Filed: 08/14/2015
• Issued: 08/07/2018
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Sun, Liang
• Primary Examiner(s): Leiby, Christopher E
• Application Number:
  US15/032,160
• Publication Number:
  US 20160343284A1
• Time in Patent Office: 1,089 Days
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0465 Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2360/147 the originated light output being determined for each pixel
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: H10K 59/352 the areas of the RGB subpixels being different
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels
• CPC Class Codes: H10K 71/164 using vacuum deposition
• CPC Class Codes: H10K 71/166 using selective deposition, e.g. using a mask

Abstract

The present disclosure provides a pixel structure. The pixel structure includes first sub-pixels, second sub-pixels, and third sub-pixels. Two adjacent third sub-pixels facing each other form a third sub-pixel group. The second sub-pixels are arranged in a row along a first axis to form second-sub-pixel rows, the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the first axis parallel to the second-sub-pixel rows, and the second-sub-pixel rows and rows formed by the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration. The second sub-pixels are arranged along a direction of a second axis to form second-sub-pixel columns, the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the second axis parallel to the second-sub-pixel columns, the second-sub-pixel columns and columns are arranged in an alternating configuration.

Claims

1. A pixel structure, comprising first sub-pixels, second sub-pixels, and third sub-pixels, wherein:

two adjacent third sub-pixels facing each other form a third sub-pixel group;

the second sub-pixels are arranged in a row along a first axis to form second-sub-pixel rows, all of the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the first axis parallel to the second-sub-pixel rows, and the second-sub-pixel rows and rows formed by the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration;

the second sub-pixels are arranged along a direction of a second axis to form second-sub-pixel columns, the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the second axis parallel to the second-sub-pixel columns, the second-sub-pixel columns and columns formed by the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration;

geometric center of each second sub-pixel is positioned on a perpendicular bisection of a line connecting centers of any two of third sub-pixel groups and first sub-pixels adjacent to the second sub-pixel;

the first axis is different from the second axis; and

an entire area of the first sub-pixel is same as an entire area of the third sub-pixel group comprising the two adjacent third sub-pixels, and an area of the second sub-pixel is less than the area of the first sub-pixel.

2. The pixel structure according to claim 1, wherein:

the second sub-pixel, an adjacent third sub-pixel group in an adjacent row, and an adjacent first sub-pixel in the adjacent row form a pixel unit, consecutive pixel units forming pixel unit rows aligned along the direction of the first axis, and except for a pixel unit at an edge of the pixel unit row, each pixel unit sharing the first sub-pixel with an adjacent pixel unit in a same pixel unit row;

or

the second sub-pixel, an adjacent third sub-pixel group in an adjacent column, and an adjacent first sub-pixel in the adjacent column form a pixel unit, consecutive pixel units forming pixel unit columns aligned along the direction of the second axis, and except for a pixel unit at an edge of the pixel unit column, each pixel unit shares the first sub-pixel with an adjacent pixel unit in a same pixel unit column.

3. The pixel structure according to claim 1, wherein:

a diagonal direction is 45 degrees clockwise with the direction of the first axis, 45 degrees counter clockwise with the direction of the first axis, 45 degrees clockwise with the direction of the second axis, or 45 degrees counter clockwise with the direction of the second axis;

geometric centers of the first sub-pixels in consecutive rows or consecutive columns are aligned to form lines along one of the diagonal directions;

geometric centers of the third sub-pixel groups in consecutive rows or consecutive columns are aligned to form lines along a diagonal direction parallel to lines formed by the geometric centers of the first sub-pixels such that the lines formed by the geometric centers of the first sub-pixels and lines formed by the geometric centers of third sub-pixel groups are arranged in an alternating configuration;

each second sub-pixel is aligned between two adjacent first sub-pixels or between two adjacent third sub-pixel groups, wherein the two adjacent first sub-pixels are aligned in one of the diagonal direction and the two adjacent third sub-pixel groups are aligned in another one of the diagonal direction; and

a geometric center of each second sub-pixel is arranged at an intersection of a perpendicular bisector of a line connecting geometric centers of adjacent first sub-pixel and third sub-pixel group in an adjacent row and a perpendicular bisector of a line connecting geometric centers of adjacent first sub-pixel and third sub-pixel group in an adjacent column.

4. The pixel structure according to claim 3, wherein:

each of the two third sub-pixels in the third sub-pixel group is a mirror image of the other along the direction of the first axis or along the direction of the second axis, each third sub-pixel group being arranged between two first sub-pixels along the direction of the first axis or along the direction of the second axis, and two adjacent third sub-pixels being arranged on both sides of the first sub-pixel, wherein each of the two adjacent third sub-pixels has a shortest distance to the first sub-pixel along the direction of the first axis or along the direction of the second axis such that the two adjacent third sub-pixels have a mirror symmetry, a centrosymmetry, or a combination of a mirror symmetry and a centrosymmetry about a geometric center of the first sub-pixel;

or

each third sub-pixel group is arranged between two adjacent second sub-pixels along a diagonal direction such that each second sub-pixel is arranged between two adjacent third sub-pixel groups along the diagonal direction, the two adjacent third sub-pixels having a mirror symmetry, a centrosymmetry, or a combination of a mirror symmetry and a centrosymmetry about a geometric center of the second sub-pixel.

5. The pixel structure according to claim 4, wherein:

a shape of the first sub-pixel, a shape of the third sub-pixel group, and a shape of the second sub-pixel each has a symmetry axis; and

a symmetry axis of the shape of the first sub-pixel extends along a direction parallel to one of the first axis, second axis, and diagonal axis, a symmetry axis of the shape of the third sub-pixel group extends along a direction parallel to one of the first axis, second axis, and diagonal axis, and a symmetry axis of the shape of the second sub-pixel extends along a direction parallel to one of the first axis, second axis, and diagonal axis.

6. The pixel structure according to claim 5, wherein:

the lines formed by the geometric centers of the first sub-pixels are arranged along a direction of 45 degrees or 135 degrees with the first axis;

the lines formed by the geometric centers of the third sub-pixel groups are arranged along a direction of 45 degrees or 135 degrees with the first axis; and

the lines formed by the geometric centers of the second sub-pixels are arranged along a direction of 45 degrees or 135 degrees with the first axis.

7. The pixel structure according to claim 1, wherein:

each of the shape of the first sub-pixel, the shape of the third sub-pixel, the shape of the third sub-pixel group, and the shape of the second sub-pixel is a circular shape, a triangular shape, a quadrilateral shape, a pentagonal shape, a hexagonal shape, an octagonal shape, or a combination thereof.

8. The pixel structure according to claim 7, wherein:

the first sub-pixel has a quadrilateral shape or an octagonal shape;

the third sub-pixel has a triangular shape or a quadrilateral shape such that the third sub-pixel group formed by two adjacent third sub-pixels facing each other has a quadrilateral shape or an octagonal shape; and

the second sub-pixel has a quadrilateral shape or an octagonal shape.

9. The pixel structure according to claim 8, wherein:

the first sub-pixel has a rhombus shape;

the third sub-pixel has a rectangular shape such that the third sub-pixel group formed by two adjacent third sub-pixels facing each other has an overall quadrilateral shape; and

the second sub-pixel has a rectangular shape.

10. The pixel structure according to claim 8, wherein:

two adjacent second sub-pixels having a closest distance along the direction of the first axis or the direction of the second axis have same shapes, or

two adjacent second sub-pixels having a closest distance along the direction of the first axis or the direction of the second axis have a mirror symmetry about a perpendicular bisector of a line connecting geometric centers of the two adjacent second sub-pixels.

11. The pixel structure according to claim 2, wherein:

geometric centers of the first sub-pixels in one row or in one column are aligned in a straight line;

geometric centers of the third sub-pixel groups in one row or in one column are aligned in a straight line; and

geometric centers of the second sub-pixels in one row or in one column are aligned in a straight line.

12. The pixel structure according to claim 1, wherein:

each of the first sub-pixel, the second sub-pixel, and the third sub-pixel group is connected to a data line to receive pixel display information.

13. A method for displaying the pixel structure according to claim 1, wherein:

the second sub-pixel, an adjacent third sub-pixel in an adjacent row, and an adjacent first sub-pixel in the adjacent row form a pixel unit, consecutive pixel units forming pixel unit rows aligned along the direction of the first axis, and except for a pixel unit at an edge of the pixel unit row, each pixel unit sharing the first sub-pixel with an adjacent pixel unit in a same pixel unit row such that each pixel unit displays pixel display information of three display colors, or

the second sub-pixel, an adjacent third sub-pixel in an adjacent column, and an adjacent first sub-pixel in the adjacent column form a pixel unit, consecutive pixel units forming pixel unit columns aligned along the direction of the second axis, and except for a pixel unit at an edge of the pixel unit column, each pixel unit sharing the first sub-pixel with an adjacent pixel unit in a same pixel unit column such that each pixel unit displays pixel display information of the three display colors.

14. The method according to claim 13, further including steps of:

step S1, obtaining theoretical brightness values from the pixel display information for colors displayed by the first sub-pixel, the second sub-pixel, and the third sub-pixel of each pixel unit;

step S2, calculating actual brightness values of the first sub-pixel, the second sub-pixel, and the third sub-pixel 30 of each pixel unit; and

step S3, inputting corresponding actual brightness values into the first sub-pixel, the second sub-pixel, and the third sub-pixel of each pixel unit to display images.

15. The method according to claim 14, wherein:

the actual brightness value of the color displayed by the second sub-pixels is a theoretical brightness value of color displayed by the second sub-pixel;

the actual brightness value of the color displayed by the third sub-pixel is a brightness theoretical value of displayed by the third sub-pixel; and

the actual brightness value of the color displayed by the first sub-pixel is calculated as a sum of a weighted brightness value of color displayed by a first portion of the first sub-pixel and a weighted brightness value of color displayed by a second portion of the first sub-pixel, wherein the first portion of the first sub-pixel is in a first pixel unit and the second portion of the first sub-pixel is in a second pixel unit adjacent to the one pixel unit.

16. The method according to claim 15, wherein:

a relative weight value multiplied by the brightness value of the color displayed by the first portion of the first sub-pixel is ½

; and

a relative weight value multiplied by the brightness value of the color displayed by the second portion of the first sub-pixel is ½

.

17. A display apparatus, including the pixel structure of claim 1.

18. The display apparatus according to claim 17, wherein the display apparatus is an OLED display device, an LCD device.