Image device with improved chrominance quality

• US 9,552,757 B2
• Filed: 10/10/2014
• Issued: 01/24/2017
• Est. Priority Date: 08/21/2014
• Status: Active Grant

• Current Assignee: Vp Assets Limited
• Original Assignee: Vp Assets Limited
• Inventors: Phan, Gia Chuong, Phan, Maggie, Phan, Anthony
• Primary Examiner(s): SHERMAN, STEPHEN G
• Application Number:
  US14/512,289
• Publication Number:
  US 20160055782A1
• Time in Patent Office: 837 Days
• Field of Search: 345/690, 345 60-108
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• 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 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H01L 27/156 two-dimensional arrays

Abstract

The invention provides an image device with improved chrominance quality. The image device includes a plurality of RGBW pixels, a plurality of RGBY pixels, and a plurality of RBGB pixels. Each RGBW pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel. Each RGBY pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a yellow sub-pixel. Each RBGB pixel includes a red sub-pixel, a green sub-pixel, and two blue sub-pixels. The RGBW pixels, RGBY pixels, and RBGB pixels are mixed in the image device. The image device of the present invention can solve the problem of dark yellow in the conventional RGBW display while achieving a white balance status. As a result the chrominance quality is improved.

Claims

1. An image device, comprising:

a plurality of RGBW pixels, each RGBW pixel comprising a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel; and

a plurality of RGBY pixels, each RGBY pixel comprising a red sub-pixel, a green sub-pixel, a blue sub-pixel and a yellow sub-pixel, and

a plurality of RBGB pixels, each RBGB pixel comprising a red sub-pixel, a green sub-pixel, and two blue sub-pixels,

wherein the RGBW pixels and the RGBY pixels and the RBGB pixels are mixed in the image device in such a manner that the RGBY pixels and the RGBW pixels are arranged alternately in a first direction of the image device, and the RGBY pixels and the RBGB pixels are arranged alternately in a second direction, perpendicular to the first direction, of the image device.

2. The image device according to claim 1, wherein the ratio of the number of red sub-pixels to the number of green sub-pixels to the number of blue sub-pixels to the number of white sub-pixels and to the number of yellow sub-pixels is about 4:

4;

5;

2;

1.

3. The image device according to claim 1, wherein the ratio of the total area of red sub-pixels to the total area of green sub-pixels to the total area of blue sub-pixels to the total area of white sub-pixels and to the total area of yellow sub-pixels is about 4:

4;

5;

2;

1.

4. The image device according to claim 1, wherein each sub-pixel is formed as about a square shape.

5. The image device according to claim 1, wherein each sub-pixel is formed as about a rectangular shape.

6. The image device according to claim 5, wherein any two adjacent sub-pixels along a longer border are formed as about a square shape.

7. The image device according to claim 5, wherein any three adjacent sub-pixels along a longer border are formed as about a square shape.

8. The image device according to claim 5, wherein any four adjacent sub-pixels along a longer border are formed as about a square shape.

9. The image device according to claim 1, wherein each row or each column comprises at least one RGBW pixel.

10. The image device according to claim 1, wherein at least one row or at least one column comprises at least one RGBW pixel and at least one RGBY pixel.

11. The image device according to claim 1, wherein at least one row or at least one column comprises at least one RGBW pixel and at least one RBGB pixel.

12. The image device according to claim 1, wherein every two consecutive rows or every two consecutive columns comprise at least one RGBY pixel.

13. The image device according to claim 1, wherein every two consecutive rows or every two consecutive columns comprise at least one RGBW pixel.

14. The image device according to claim 1, wherein every two consecutive rows or every two consecutive columns comprise at least one RBGB pixel.

15. The image device according to claim 1, wherein each sub-pixel has a plurality of sides adjacent to the other sub-pixels with different color.

16. The image device according to claim 1, wherein each sub-pixel other than white sub-pixels has a plurality of sides adjacent to the other sub-pixels with different color.

17. The image device according to claim 1, wherein at least one row or one column comprises a plurality of yellow sub-pixels and blue sub-pixels.

18. The image device according to claim 1, wherein at least two consecutive rows or two consecutive columns comprise a plurality of yellow sub-pixels and blue sub-pixels.

19. The image device according to claim 1, wherein at least one row or one column comprises a plurality of white sub-pixels.

20. The image device according to claim 1, wherein at least two consecutive rows or two consecutive columns comprise a plurality of white sub-pixels.

21. The image device according to claim 1, wherein the RGBW pixel comprises the red sub-pixel, the green sub-pixel, the blue sub-pixel and the white sub-pixel arranged in a 1×

4 matrix.

22. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the green sub-pixel, the blue sub-pixel and the white sub-pixel.

23. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the blue sub-pixel, the red sub-pixel and the white sub-pixel.

24. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the red sub-pixel, the blue sub-pixel and the white sub-pixel.

25. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the white sub-pixel, the red sub-pixel, the green sub-pixel and the blue sub-pixel.

26. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the white sub-pixel, the blue sub-pixel, the red sub-pixel and the green sub-pixel.

27. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the blue sub-pixel, the green sub-pixel and the white sub-pixel.

28. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the white sub-pixel, the blue sub-pixel, the green sub-pixel and the red sub-pixel.

29. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the blue sub-pixel, the white sub-pixel and the red sub-pixel.

30. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the green sub-pixel, the white sub-pixel and the blue sub-pixel.

31. The image device according to claim 21, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the red sub-pixel, the white sub-pixel and the blue sub-pixel.

32. The image device according to claim 1, wherein the RGBY pixel comprises the red sub-pixel, the green sub-pixel, the blue sub-pixel and the yellow sub-pixel arranged in a 1×

4 matrix.

33. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the green sub-pixel, the blue sub-pixel and the yellow sub-pixel.

34. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the blue sub-pixel, the red sub-pixel, the green sub-pixel and the yellow sub-pixel.

35. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the blue sub-pixel, the red sub-pixel and the yellow sub-pixel.

36. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the red sub-pixel, the blue sub-pixel and the yellow sub-pixel.

37. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the yellow sub-pixel, the green sub-pixel, the blue sub-pixel and the red sub-pixel.

38. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the yellow sub-pixel, the green sub-pixel and the blue sub-pixel.

39. The image device according to claim 32, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the blue sub-pixel, the green sub-pixel and the yellow sub-pixel.

40. The image device according to claim 1, wherein the RBGB pixel comprises the red sub-pixel, the green sub-pixel and two blue sub-pixels arranged in a 1×

4 matrix.

41. The image device according to claim 40, wherein the sequence of the sub-pixels in the 1×

4 matrix is the green sub-pixel, the blue sub-pixel, the red sub-pixel and the blue sub-pixel.

42. The image device according to claim 40, wherein the sequence of the sub-pixels in the 1×

4 matrix is the blue sub-pixel, the red sub-pixel, the green sub-pixel and the blue sub-pixel.

43. The image device according to claim 40, wherein the sequence of the sub-pixels in the 1×

4 matrix is the blue sub-pixel, the green sub-pixel, the red sub-pixel and the blue sub-pixel.

44. The image device according to claim 40, wherein the sequence of the sub-pixels in the 1×

4 matrix is the red sub-pixel, the blue sub-pixel, the green sub-pixel and the blue sub-pixel.