PIXEL ARRAY, DRIVING METHOD THEREOF, DISPLAY PANEL AND DISPLAY DEVICE

• US 20160019825A1
• Filed: 06/30/2014
• Published: 01/21/2016
• Est. Priority Date: 12/30/2013
• 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 9,773,445 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• 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 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• 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 3/2074 using sub-pixels

Abstract

The present invention provides a pixel array comprising a plurality of pixel units, each of which comprises three sub-pixels in different colors, wherein, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block. Compared to the prior art, the width of the sub-pixel in the present invention increases, which reduces the difficulty of the manufacturing process of the pixel array and improves product yield. The present invention further provides a driving method of the pixel array, a display panel including the pixel array, and a display device including the display panel. When driving the above pixel array with the driving method, granular sensation of the display panel including the pixel array can be reduced, and a display effect of a display panel with higher resolution in the same size can be achieved.

Claims

1-16. -16. (canceled)

17. A driving method of a pixel array, wherein, the pixel array comprises a plurality of pixel units, each of which comprises three sub-pixels in different colors, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block, and the driving method comprises steps of:

S1, calculating theoretical brightness values of an image to be displayed at respective sub-pixels;

S2, calculating actual brightness values of the respective sub-pixels, wherein, the actual brightness value of each sub-pixel at least includes a sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in the same row; and

S3, inputting signals to the respective sub-pixels, so that the respective sub-pixels reach the actual brightness values calculated in step S2.

18. The driving method according to claim 17, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+b*T(m,n)+a*T(m,n+3),

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, 3<

n≦

Y−

3, a>

0, b>

0, and 2a+b=1.

19. The driving method according to claim 17, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=g*T(m,n−

6)+h*T(m,n−

3)+i*T(m,n)+h*T(m,n+3)+g*T(m,n+6);

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m the column n+6, g>

0, h>

0, i>

0, 2g+2h+i=1, and 6<

n≦

Y−

6.

20. The driving method according to claim 17, wherein, in step S2, the actual brightness value of each sub-pixel includes the sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in the same row minus a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in different rows.

21. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+(b+)*T(m,n)+a*T(m,n+3)−

[e1*T(m−

1,n−

3)+e2*T(m+1,n−

3)+e3*T(m−

1,n+3)+e4*T(m+1,n+3)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, 1<

m<

X, 3<

n≦

Y−

3, a>

0, b>

0, ei>

0, 2a+b=1, and ≦

0.4.

22. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+(b+)*T(m,n)+a*T(m,n+3)−

[f1*T(m−

1,n−

3)+f2*T(m−

1,n+3)+f3*T(m+1,n−

3)+f4*T(m+1,n+3)+f5*T(m−

1,n)+f6*T(m+1,n)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+1, n) is the theoretical brightness value of the sub-pixel in row m+1 and column n, T(m−

1, n) is the theoretical brightness value of the sub-pixel in row m−

1 and column n, 1<

m<

X, 3<

n≦

Y−

3, a>

0, b>

0, fi>

0, 2a+b=1, and ≦

0.4.

23. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+(b+)*T(m,n)+a*T(m,n+3)−

[g1*T(m−

1,n−

3)+g2*T(m+1,n−

3)+g3*T(m−

1,n+3)+g4*T(m+1,n+3)+g5*T(m−

2,n)+g6*T(m+2,n)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+2, n) is the theoretical brightness value of the sub-pixel in row m+2 and column n, T(m−

2, n) is the theoretical brightness value of the sub-pixel in row m−

2 and column n, 2<

m≦

X−

2, 3<

n≦

Y−

3, a>

0, b>

0, gi>

0, 2a+b=1, and ≦

0.4.

24. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+(b+)*T(m,n)+a*T(m,n+3)−

[H1*T(m−

1,n−

3)+H2*T(m+1,n−

3)+H3*T(m−

1,n+3)+H4*T(m+1,n+3)+H5*T(m−

2,n)+H6*T(m+2,n)+H7*T(m,n−

6)+H8*T(m,n+6)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+2, n) is the theoretical brightness value of the sub-pixel in row m+2 and column n, T(m−

2, n) is the theoretical brightness value of the sub-pixel in row m−

2 and column n, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m and column n+6, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, 2<

m≦

X−

2, 6<

n≦

Y−

6, a>

0, b>

0, Hi>

0, 2a+b=1, and ≦

0.4.

25. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=a*T(m,n−

3)+(b+)*T(m,n)+a*T(m,n+3)−

[L1*T(m−

1,n−

6)+L2*T(m+1,n−

6)+L3*T(m−

1,n+6)+L4*T(m+1,n+6)+L5*T(m−

2,n)+L6*T(m+2,n)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m−

1, n−

6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

6, T(m−

1, n+6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+6, T(m+1, n−

6) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

6, T(m+1, n+6) is the theoretical brightness value of the sub-pixel in row m+1 and column n+6, T(m−

2, n) is the theoretical brightness value of the sub-pixel in row m−

2 and column n, T(m+2, n) is the theoretical brightness value of the sub-pixel in row m+2 and column n, 2<

m≦

X−

2, 6<

n≦

Y−

6, a>

0, b>

0, Li>

0, 2a+b=1, and ≦

0.4.

26. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=g*T(m,n−

6)+h*T(m,n−

3)+(i+)*T(m,n)+h*T(m,n+3)+g*T(m,n+6)−

[M1*T(m−

1,n−

3)+M2*T(m−

1,n+3)+M3*T(m+1,n−

3)+M4*T(m+1,n+3)+M5*T(m−

1,n)+M6*T(m+1,n)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m and column n+6, T(m+1, n) is the theoretical brightness value of the sub-pixel in row m+1 and column n, T(m−

1, n) is the theoretical brightness value of the sub-pixel in row m−

1 and column n, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, g>

0, h>

0, i>

0, Mi≧

0, 2g+2h+i=1, 0<

≦

0.4, 6<

n≦

Y−

6 and 1<

m<

X.

27. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=g*T(m,n−

6)+h*T(m,n−

3)+(i+)*T(m,n)+h*T(m,n+3)+g*T(m,n+6)−

[N1*T(m−

1,n−

6)+N2*T(m−

1,n−

3)+N3*T(m−

1,n)+N4*T(m−

1,n+3)+N5*T(m−

1,n+6)+N6*T(m+1,n−

6)+N7*T(m+1,n−

3)+N8*T(m+1,n)+N9*T(m+1,n+3)+N10*T(m+1,n+6)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m and column n+6, T(m−

1, n−

6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

6, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n) is the theoretical brightness value of the sub-pixel in row m−

1 and column n, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m−

1, n+6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+6, T(m+1, n−

6) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

6, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n) is the theoretical brightness value of the sub-pixel in row m+1 and column n, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+1, n+6) is the theoretical brightness value of the sub-pixel in row m+1 and column n+6, g>

0, h>

0, i>

0, Ni≧

0, 2g+2h+i=1, 0<

≦

0.4, 6<

n≦

Y−

6 and 1<

m<

X.

28. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=g*T(m,n−

6)+h*T(m,n−

3)+(i+)*T(m,n)+h*T(m,n+3)+g*T(m,n+6)−

[o1*T(m−

1,n−

6)+o2*T(m−

1,n−

3)+o3*T(m−

1,n)+o4*T(m−

1,n+3)+o5*T(m−

1,n+6)+o6*T(m+1,n−

6)+o7*T(m+1,n−

3)+o8*T(m+1,n)+o9*T(m+1,n+3)+o10*T(m+1,n+6)+o11*T(m,n−

9)+o12*T(m,n+9)];

wherein, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m and column n+6, T(m, n+9) is the theoretical brightness value of the sub-pixel in row m and column n+9, T(m, n−

9) is the theoretical brightness value of the sub-pixel in row m and column n−

9, T(m−

1, n−

6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

6, T(m−

1, n−

3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

3, T(m−

1, n) is the theoretical brightness value of the sub-pixel in row m−

1 and column n, T(m−

1, n+3) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+3, T(m−

1, n+6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+6, T(m+1, n−

6) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

6, T(m+1, n−

3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

3, T(m+1, n) is the theoretical brightness value of the sub-pixel in row m+1 and column n, T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, T(m+1, n+6) is the theoretical brightness value of the sub-pixel in row m+1 and column n+6, g>

0, h>

0, i>

0, oi>

0, 2g+2h+i=1, 0<

≦

0.4, 9<

n≦

Y−

9 and 1<

m<

X.

29. The driving method according to claim 20, wherein, the pixel array comprises X rows and Y columns of sub-pixels, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:

A(m,n)=g*T(m,n−

6)+h*T(m,n−

3)+(i+)*T(m,n)+h*T(m,n+3)+g*T(m,n+6)−

[p1*T(m,n−

9)+p2*T(m+1,n−

6)+p3*T(m+2,n−

3)+p4*T(m+3,n)+p5*T(m+2,n+3)+p6*T(m+1,n+6)+p7*T(m,n+9)+p8*T(m−

1,n+6)+p9*T(m−

2,n+3)+p10*T(m−

3,n)+p11*T(m−

2,n−

3)+p12*T(m−

1,n−

6)];

wherein, T(m, n−

6) is the theoretical brightness value of the sub-pixel in row m and column n−

6, T(m, n−

3) is the theoretical brightness value of the sub-pixel in row m and column n−

3, T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3, T(m, n+6) is the theoretical brightness value of the sub-pixel in row m and column n+6, T(m, n−

9) is the theoretical brightness value of the sub-pixel in row m and column n−

9, T(m+1, n−

6) is the theoretical brightness value of the sub-pixel in row m+1 and column n−

6, T(m+2, n−

3) is the theoretical brightness value of the sub-pixel in row m+2 and column n−

3, T(m+3, n) is the theoretical brightness value of the sub-pixel in row m+3 and column n, T(m+2, n+3) is the theoretical brightness value of the sub-pixel in row m+2 and column n+3, T(m+1, n+6) is the theoretical brightness value of the sub-pixel in row m+1 and column n+6, T(m, n+9) is the theoretical brightness value of the sub-pixel in row m and column n+9, T(m−

1, n+6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n+6, T(m−

2, n+3) is the theoretical brightness value of the sub-pixel in row m−

2 and column n+3, T(m−

3, n) is the theoretical brightness value of the sub-pixel in row m−

3 and column n, T(m−

2, n−

3) is the theoretical brightness value of the sub-pixel in row m−

2 and column n−

3, T(m−

1, n−

6) is the theoretical brightness value of the sub-pixel in row m−

1 and column n−

6, g>

0, h>

0, i>

0, pi≧

0, 2g+2h+i=1, 0<

≦

0.4, 9<

n≦

Y−

9 and 3<

m≦

X−

3.

30. A display panel, comprising a pixel array, wherein, the pixel array comprises a plurality of pixel units, each of which comprises three sub-pixels in different colors, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block.

31. A display device, comprising a display panel, wherein, the display panel is the display panel according to claim 30.