Granted Patent B2

US 9,953,590 · App. 10/492,616 · Granted Apr 24, 2018

Abstract

Claims (69)

1. A color display device for displaying a color image having n different primary colors, wherein n is greater than or equal to four, the device comprising an array of substantially rectangular sub-pixels configured to have at least one repeating unit, said repeating unit including at least one sub-pixel representing each of said n different primary colors, wherein said sub-pixels are arranged in a single row to form said repeating unit having an aspect ratio of 1:1.

2. A device according to claim 1 comprising a controller able to receive an input corresponding to said color image and to selectively activate at least some of said sub-pixels to produce one or more attenuation patterns corresponding to a gray-level representation of said color image.

3. A device according to claim 2 , wherein said controller is able to activate at least one of said sub-pixels in accordance with an adjusted coverage value.

4. A device according to claim 3 , wherein said controller is able to determine said adjusted coverage value by applying a smoothing function to initial coverage values of a group of less than n different primary color sub-pixels containing the activated sub-pixel.

5. A device according to claim 4 , wherein said group of sub-pixels comprises two sub-pixels neighboring said activated sub-pixel.

6. A device according to claim 5 , wherein the two sub-pixels neighboring said activated sub-pixel are located on one row or column.

7. A device according to claim 3 , wherein said controller is able to determine said adjusted coverage value by applying first and second smoothing functions to initial coverage values of first and second groups of sub-pixels, respectively, wherein each of said first and second groups of sub-pixels contains the activated sub-pixel and comprises less than n different primary color sub-pixels.

8. A device according to claim 7 , wherein said first group comprises two sub-pixels in a single row or column including said activated sub-pixel.

9. A device according to claim 7 , wherein said second group comprises at least one neighboring sub-pixel on the same column or row as said activated sub-pixel.

10. A device according to claim 1 , wherein said sub-pixels are arranged according to a hue order of said n different primary colors.

11. A device according to claim 1 , wherein said sub-pixels of each said repeating unit are arranged in sub-sets, each sub-set comprising neighboring sub-pixels, wherein each one of said sub-sets has a relatively neutral white-balance.

12. A device according to claim 11 , wherein one or more of said sub-sets comprises three neighboring color sub-pixels.

13. A device according to claim 12 , wherein said three neighboring color sub-pixels are located on one row or column.

14. A device according to claim 11 , wherein one or more of said sub-sets comprises sub-pixels of five primary colors arranged in the order red, green, blue, yellow and cyan.

15. A device according to claim 11 , wherein one or more of said sub-sets comprises two neighboring color sub-pixels.

16. A device according to claim 15 , wherein said two neighboring color-sub-pixels are located on one row or column.

17. A device according to claim 1 , wherein sub-pixels of said repeating unit are arranged in a one-dimensional array.

18. A device according to claim 1 , wherein said n different primary colors comprise red, green, blue and yellow.

19. A device according to claim 1 , wherein said n different primary colors comprise at least five different primary colors.

20. A device according to claim 19 , wherein said at least five different primary colors comprise red, green, blue, yellow and cyan.

21. A device according to claim 1 , wherein said n different primary colors comprise at least six different primary colors.

22. A device according to claim 21 , wherein said at least six different primary colors comprise red, green, blue, yellow, cyan and magenta.

23. A device according to claim 22 , wherein said repeating units are arranged in first and second rows, said first row comprising color sub-pixels being shifted with respect to color sub-pixels of said second row.

24. A device according to claim 1 , wherein said repeating unit comprises an arrangement of said sub-pixels that optimizes at least one property of said displayed image.

25. A device according to claim 24 , wherein the arrangement of said sub-pixels is selected based on minimizing a harmonic of a transformation function applied to luminance values of a group of possible sub-pixel arrangements.

26. A device according to claim 25 , wherein said transformation function comprises a Fourier Transform and wherein said harmonic comprises a first harmonic of said Fourier Transform.

27. A device according to claim 1 , wherein the repeating unit is configured to optimize a gray-level range of said repeating unit.

28. A device according to claim 1 , wherein the repeating unit is configured to optimize color saturation.

29. A device according to claim 1 , wherein the repeating unit is configured to optimize luminance uniformity.

30. A device according to claim 1 , wherein the repeating unit is configured to optimize image resolution.

31. A device according to claim 1 , wherein the repeating unit is configured to optimize a property related to a color fringes effect.

32. A device according to claim 1 comprising an n-primary color Liquid Crystal Display (LCD) device, wherein said array of sub-pixels comprises an array of sub-pixel filters, each sub-pixel filter transmitting light of one of said n different primary colors.

33. The color display device of claim 1 , wherein said sub-pixels are rectangular, having two parallel long sides and two parallel short sides, wherein said sub-pixels of each repeating unit are adjacent along their respective long sides, and wherein corresponding sub-pixels of repeating units being adjacent along said short sides have the same color.

34. The color display device of claim 33 , wherein each repeating unit has m sub-pixels, and wherein the aspect ratio of each said sub-pixel is m:1.

35. A color display device for displaying a color image having n different primary colors, wherein n is greater than three, the device comprising:

an array of substantially rectangular sub-pixels configured to have at least one repeating unit comprising m sub-pixels, including at least one sub-pixel representing each of said n different primary colors, wherein said sub-pixels are arranged in a single row to form said repeating unit having an aspect ratio of 1:1; and

a controller able to receive an input corresponding to said color image and to selectively activate at least some of said sub-pixels to produce one or more attenuation patterns corresponding to a gray-level representation of said color image.

36. A device according to claim 35 , wherein said sub-pixels are arranged according to a hue order of said n different primary colors.

37. A device according to claim 35 , wherein said sub-pixels of each said repeating unit are arranged in sub-sets, each sub-set comprising at least two neighboring sub-pixels, wherein each one of said sub-sets has a relatively neutral white-balance.

38. A device according to claim 37 , wherein said at least two neighboring sub-pixels are located on one row or column.

39. A device according to claim 35 , wherein said controller is able to activate at least one of said sub-pixels in accordance with an adjusted coverage value.

40. A device according to claim 39 , wherein said controller is able to determine said adjusted coverage value by applying a smoothing function to initial coverage values of a group of less than n different primary color sub-pixels containing the activated sub-pixel.

41. A device according to claim 40 , wherein said group of sub-pixels comprises two sub-pixels neighboring said activated sub-pixel.

42. A device according to claim 39 , wherein said controller is able to determine said adjusted coverage value by applying first and second smoothing functions to initial coverage values of first and second groups of sub-pixels, respectively, wherein each of said first and second groups of sub-pixels contains the activated sub-pixel and comprises less than n different primary color sub-pixels.

43. A device according to claim 42 , wherein said first group comprises two sub-pixels in a single row or column including said activated sub-pixel.

44. A device according to claim 43 , wherein said second group comprises at least one neighboring sub-pixel on the same column or row as said activated sub-pixel.

45. A device according to claim 35 , wherein sub-pixels of said repeating unit are arranged in a one-dimensional array.

46. A device according to claim 35 , wherein said n different primary colors comprise red, green, blue and yellow.

47. A device according to claim 35 , wherein said repeating unit comprises an arrangement of said sub-pixels that optimizes at least one property of said displayed image.

48. A device according to claim 47 , wherein the arrangement of said sub-pixels is selected based on minimizing a harmonic of a transformation function applied to luminance values of a group of possible sub-pixel arrangements.

49. A device according to claim 48 , wherein said transformation function comprises a Fourier Transform and wherein said harmonic comprises a first harmonic of said Fourier Transform.

50. A device according to claim 35 , wherein the repeating unit is configured to optimize a gray-level range of said repeating unit.

51. A device according to claim 35 , wherein the repeating unit is configured to optimize color saturation.

52. A device according to claim 35 , wherein the repeating unit is configured to optimize luminance uniformity.

53. A device according to claim 35 , wherein the repeating unit is configured to optimize image resolution.

54. A device according to claim 35 , wherein the repeating unit is configured to optimize a property related to a color fringes effect.

55. A device according to claim 35 comprising an n-primary color Liquid Crystal Display (LCD) device, wherein said array of sub-pixels comprises an array of sub-pixel filters, each sub-pixel filter transmitting light of one of said n different primary colors.

56. The color display device of claim 35 , wherein said sub-pixels are rectangular, having two parallel long sides and two parallel short sides, wherein said sub-pixels of each repeating unit are adjacent along their respective long sides, and wherein corresponding sub-pixels of repeating units being adjacent along said short sides have the same color.

57. The color display device of claim 56 , wherein each repeating unit has m sub-pixels, and wherein the aspect ratio of each said sub-pixel is m:1.

58. A method of displaying a color image on a color display comprising an array of sub-pixels configured in a plurality of repeating units of at least one type, each repeating unit including at least one sub-pixel of each of n different primary colors, wherein n is greater than three and wherein said sub-pixels are arranged in a single row to form said repeating unit having an aspect ratio of 1:1, the method comprising producing a color combination by at least one of said repeating units without activating a sub-set of sub-pixels capable of producing substantially white light in the repeating unit producing said color combination.

59. The method of claim 58 , wherein said sub-pixels are rectangular, having two parallel long sides and two parallel short sides, wherein said sub-pixels of each repeating unit are adjacent along their respective long sides, and wherein corresponding sub-pixels of repeating units being adjacent along said short sides have the same color.

60. The method of claim 59 , wherein each repeating unit has m sub-pixels, and wherein the aspect ratio of each said sub-pixel is m:1.

61. A method of displaying a color image on a color display comprising an array of sub-pixels arranged in repeating units, each said repeating unit including m sub-pixels, including at least one of each of n different primary colors, wherein n is greater than three and wherein said sub-pixels are arranged in a single row to form said repeating unit having an aspect ratio of 1:1, the method comprising:

activating at least one of said sub-pixels in accordance with an adjusted coverage value.

62. A method according to claim 61 comprising determining said adjusted coverage value by applying a smoothing function to initial coverage values of a group of less than n different primary color sub-pixels containing said activated sub-pixel.

63. A method according to claim 62 comprising determining said adjusted coverage value by applying first and second smoothing functions to initial coverage values of first and second groups of sub-pixels respectively, wherein each of said first and second groups contains the activated sub-pixel and comprises less than n different primary color sub-pixels.

64. A method according to claim 62 comprising determining one or more of said initial coverage values.

65. The method of claim 61 , wherein said sub-pixels are rectangular, having two parallel long sides and two parallel short sides, wherein said sub-pixels of each repeating unit are adjacent along their respective long sides, and wherein corresponding sub-pixels of repeating units being adjacent along said short sides have the same color.

66. The method of claim 65 , wherein each repeating unit has m sub-pixels, and wherein the aspect ratio of each said sub-pixel is m:1.

Assignments (10)