DISPLAY SUBSTRATE AND DRIVING METHOD THEREOF AND DISPLAY DEVICE

• US 20150235617A1
• Filed: 09/26/2014
• Published: 08/20/2015
• Est. Priority Date: 02/20/2014
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: GUO, Renwei, DONG, Xue
• Granted Patent: US 9,601,082 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 5/04 using circuits for interfacing with colour displays

Abstract

The invention discloses a display substrate and a driving method thereof, and a display device. The display substrate includes a plurality of rows or columns of pixel units, wherein each row or column of pixel units include first pixel units and second pixel units which are arranged alternately, one first pixel unit and one second pixel unit are composed of three sub-pixels, and wherein the first pixel unit includes a first sub-pixel and a second sub-pixel, the second pixel unit includes the second sub-pixel and a third sub-pixel, and the first, second and third sub-pixels are arranged in turn. In the invention, three sub-pixels form two pixel units, thus the number of the sub-pixels needed to form a certain number of pixel units is decreased, and the manufacturing process is simplified and the defective rate of product is decreased.

Claims

1. A display substrate comprising a plurality of rows of pixel units or a plurality of columns of pixel units, wherein each row of pixel units or each column of pixel units include first pixel units and second pixel units which are arranged alternately, one first pixel unit and one second pixel unit are composed of three sub-pixels, and wherein the first pixel unit includes a first sub-pixel and a second sub-pixel, the second pixel unit includes the second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in turn.

2. The display substrate of claim 1, wherein

when the second sub-pixel includes a red sub-pixel, the first sub-pixel includes a green sub-pixel and the third sub-pixel includes a blue sub-pixel, or the first sub-pixel includes a blue sub-pixel and the third sub-pixel includes a green sub-pixel;

or

when the second sub-pixel includes a green sub-pixel, the first sub-pixel includes a red sub-pixel and the third sub-pixel includes a blue sub-pixel, or the first sub-pixel includes a blue sub-pixel and the third sub-pixel includes a red sub-pixel;

or

when the second sub-pixel includes a blue sub-pixel, the first sub-pixel includes a red sub-pixel and the third sub-pixel includes a green sub-pixel, or the first sub-pixel includes a green sub-pixel and the third sub-pixel includes a red sub-pixel.

3. The display substrate of claim 1, wherein the first sub-pixels, the second sub-pixels, and the third sub-pixels are arranged repeatedly in turn on a basis of a 2×

3 matrix constructed by two adjacent pixel rows.

4. The display substrate of claim 2, wherein the first sub-pixels, the second sub-pixels, and the third sub-pixels are arranged repeatedly in turn on a basis of a 2×

3 matrix constructed by two adjacent pixel rows.

5. A display device comprising the display substrate of claim 1.

6. A display device comprising the display substrate of claim 2.

7. A display device comprising the display substrate of claim 3.

8. A driving method of a display substrate, wherein the display substrate comprises a plurality of rows of pixel units or a plurality of columns of pixel units, wherein each row of pixel units or each column of pixel units include first pixel units and second pixel units which are arranged alternately, one first pixel unit and one second pixel unit are composed of three sub-pixels, and wherein the first pixel unit includes a first sub-pixel and a second sub-pixel, the second pixel unit includes the second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in turn,

wherein, the driving method comprises:

obtaining an output luminance of the first sub-pixel, an output luminance of the second sub-pixel, and an output luminance of the third sub-pixel; and

outputting the output luminance of the first sub-pixel, the output luminance of the second sub-pixel, and the output luminance of the third sub-pixel.

9. The driving method of claim 8, wherein obtaining an output luminance of the first sub-pixel, an output luminance of the second sub-pixel, and an output luminance of the third sub-pixel comprises:

adding a luminance value of the first sub-pixel to a luminance value of at least one first common pixel to generate the output luminance of the first sub-pixel, wherein the luminance value of the first sub-pixel is a product of a self luminance value of the first sub-pixel and a corresponding proportional value, the luminance value of the at least one first common pixel is a product of a self luminance value of the at least one first common pixel and a corresponding proportional value, and the at least one first common pixel is adjacent to the first sub-pixel and has the same color as the first sub-pixel;

adding a luminance value of the second sub-pixel to a luminance value of at least one second common pixel to generate the output luminance of the second sub-pixel, wherein the luminance value of the second sub-pixel is a product of a self luminance value of the second sub-pixel and a corresponding proportional value, the luminance value of the at least one second common pixel is a product of a self luminance value of the at least one second common pixel and a corresponding proportional value, and the at least one second common pixel is adjacent to the second sub-pixel and has the same color as the second sub-pixel; and

adding a luminance value of the third sub-pixel to a luminance value of at least one third common pixel to generate the output luminance of the third sub-pixel, wherein the luminance value of the third sub-pixel is a product of a self luminance value of the third sub-pixel and a corresponding proportional value, the luminance value of the at least one third common pixel is a product of a self luminance value of the at least one third common pixel and a corresponding proportional value, and the at least one third common pixel is adjacent to the third sub-pixel and has the same color as the third sub-pixel.

10. The driving method of claim 9, wherein when the first sub-pixel is at a non-edge position, the number of the at least one first common pixel is more than one;

when the second sub-pixel is at a non-edge position, the number of the at least one second common pixel is more than one; and

when the third sub-pixel is at a non-edge position, the number of the at least one third common pixel is more than one.

11. The driving method of claim 9, wherein when the first sub-pixel is at an edge position, the number of the at least one first common pixel is one;

when the second sub-pixel is at an edge position, the number of the at least one second common pixel is one; and

when the third sub-pixel is at an edge position, the number of the at least one third common pixel is one.

12. The driving method of claim 9, wherein the at least one first common pixel is located in a row or a column where the first sub-pixel is located, the at least one second common pixel is located in a row or a column where the second sub-pixel is located, and the at least one third common pixel is located in a row or a column where the third sub-pixel is located.

13. The driving method of claim 9, wherein a sum of the proportional value corresponding to the self luminance value of the first sub-pixel and the proportional value corresponding to the self luminance value of the at least one first common pixel is one;

a sum of the proportional value corresponding to the self luminance value of the second sub-pixel and the proportional value corresponding to the self luminance value of the at least one second common pixel is one; and

a sum of the proportional value corresponding to the self luminance value of the third sub-pixel and the proportional value corresponding to the self luminance value of the at least one third common pixel is one.