Color display devices and methods with enhanced attributes

Patent metadata

Field	Value
Publication number	US-9953590-B2
Application number	US-49261603-A
Country	US
Kind code	B2
Filing date	Apr 13, 2003
Priority date	Apr 11, 2002
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A color display device for displaying an n-primary color image, wherein n is greater than three, the device including an array of sub-pixel ( 801 ) configured to have at least one repeating unit having one sub-pixel representing each of the n primary colors, wherein repeating unit ( 906 ) is configured to optimize at least one attribute of the n-primary color image.

First claim

The invention claimed is:

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.

Assignees

• Ben David Ilan
• Roth Shmuel
• Ben Chorin Moshe
• Eliav Dan
• Samsung Display Co Ltd

Inventors

• Ben-David Ilan
• Roth Shmuel
• Ben-Chorin Moshe
• Eliav Dan

Classifications

• G09G3/3607 Primary

  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 title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G5/02

  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 title

• G09G5/363

  Graphics controllers · CPC title

• G09G3/2003

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title