Method and device for manipulating color in a display

• US 20060077148A1
• Filed: 04/29/2005
• Published: 04/13/2006
• Est. Priority Date: 09/27/2004
• Status: Abandoned Application

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Inventors: Gally, Brian J., Cummings, William J.
• Application Number:
  US11/118,110
• Publication Number:
  US 20060077148A1
• Time in Patent Office: Days
• US Class Current: 345/85
• CPC Class Codes: G02B 26/001 based on interference in an adjustable optical cavity interference filters G02B5/28; devices or arrangements using multiple reflections in spectrometry or monochromators G01J3/26
• CPC Class Codes: G09G 3/3466 based on interferometric effect
• CPC Class Codes: H04M 1/73 Battery saving arrangements
• CPC Class Codes: H04W 52/027 by controlling a display operation or backlight unit
• CPC Class Codes: Y02D 30/70 in wireless communication networks
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

A method and device for manipulating color in a display is disclosed. In one embodiment, a display comprises interferometric display elements formed to have spectral responses that produce white light. In one embodiment, the produced white light is characterized by a standardized white point.

Claims

1. A display, comprising:

a plurality of interferometric modulators, said plurality of interferometric modulators comprising;

at least one interferometric modulator configured to output red light;

at least one interferometric modulator configured to output green light; and

at least one interferometric modulator configured to output blue light,

wherein said red light, said green light, and said blue light combine to produce white light having a standardized white point.

2. The display of claim 1, wherein each of said plurality of interferometric modulators comprises a reflective area, and wherein said respective areas are selected so as to produce said white light having said standardized white point.

3. The display of claim 1, wherein said standardized white point is one of D55, D65, or D75.

4. The display of claim 1, further comprising a source of illumination for said plurality of interferometric modulators, said source of illumination having a different white point than said produced white light having said standardized white point.

5. A display, comprising:

at least one interferometric modulator, said modulator comprising a reflective surface configured to be positioned at a distance from a partially reflective surface, wherein said distance of said at least one modulator is selected so as to produce white light characterized by a standardized white point.

6. The display of claim 5, wherein said at least one interferometric modulator comprises a plurality of interferometric modulators having an area from which light is reflected and wherein said respective areas of said interferometric modulators are selected so as to produce white light characterized by said standardized white point.

7. The display of claim 5, wherein at least one interferometric modulator is configured to output red light, at least one interferometric modulator is configured to output green light, and at least one interferometric modulator is configured to output blue light.

8. The display of claim 5, wherein said at least one interferometric modulator comprises at least one interferometric modulator configured to output white light.

9. The display of claim 5, wherein said standardized white point is one of D55, D65, or D75.

10. The display of claim 5, further comprising at least one filter associated with the at least one modulator, said filter configured to selectively transmit certain visible wavelengths and substantially filter other visible wavelengths when illuminated with white light.

11. The display of claim 5, further comprising a source of illumination for the at least one modulator, the source of illumination having a different white point than said light reflected by said display.

12. A display, comprising:

a plurality of display elements, each comprising a reflective surface configured to be positioned at a distance from a partially reflective surface, said plurality of display elements configured to output white light characterized by a standardized white point.

13. The display of claim 12, wherein at least one of said plurality of display elements comprises a filter configured to selectively transmit certain visible wavelengths and substantially filter other visible wavelengths.

14. The display of claim 12, wherein said plurality of display elements comprises at least one display element configured to output red light, at least one display element configured to output green light, and at least one display element configured to output blue light, wherein said red light, said green light, and said blue light combine to produce said output white.

15. The display of claim 12, wherein said distance of at least one of said display elements is selected so as to produce white light characterized by a standardized white point.

16. The display of claim 12, wherein each of said plurality of display elements has an area from which light is reflected and wherein said respective areas of said display elements are selected so as to produce white light characterized by said standardized white point.

17. The display of claim 12, wherein said standardized white point is one of D55, D65, or D75.

18. The display of claim 12, further comprising at least one filter associated with at least one of said plurality of display elements and said filter is configured to selectively transmit certain visible wavelengths and substantially filter other visible wavelengths when illuminated with white light.

19. The display of claim 12, further comprising a source of illumination for the plurality of display elements, the source of illumination having a different white point than said light reflected by said display.

20. The display of claim 12, wherein said plurality of display elements comprises a plurality of interferometric modulators.

21. A method of fabricating a display, comprising:

forming a plurality of display elements configured to output light, each of said plurality of display elements comprising a reflective surface configured to be positioned at distance from a partially reflective surface, wherein each of said plurality of display elements is formed having said respective distances selected so that white light produced by said plurality display element is characterized by a standardized white point.

22. The display fabricated by said method of claim 21.

23. The method of claim 21, wherein forming said plurality of display elements comprises forming at least two display elements wherein said at least two display elements are formed with respective areas from which light is reflected and with respective distances selected so that said at least two display elements produce white light characterized by said standardized white point.

24. The method of claim 21, wherein forming said plurality of display elements comprises forming at least one display element configured to output red light, at least one display element configured to output green light, and at least one display element configured to output blue light.

25. The method of claim 21, wherein forming said plurality of display elements comprises forming at least one display element configured to output white light.

26. The method of claim 21, further comprising forming at least one filter associated with the at least one display element, said at least one filter configured to selectively transmit certain visible wavelengths and substantially filter other visible wavelengths.

27. The method of claim 21, wherein said distance is selected so that said light reflected by said display has a different white point than light illuminating said display.

28. The method of claim 21, wherein said distance is selected so that said white point is one of D55, D65, or D75.

29. A method of fabricating a display, comprising:

forming a plurality of display elements configured to output light, each of said plurality of display elements comprising a reflective surface configured to be positioned at distance from partially reflective surface,

wherein each of said display elements are formed with respective areas from which light is reflected and wherein each of said respective areas is selected so that white light produced by said plurality display element is characterized by a standardized white point.

30. The method of claim 29, wherein forming said plurality of display elements comprises forming at least one display element configured to output red light, at least one display element configured to output green light, and at least one display element configured to output blue light.

31. The method of claim 29, wherein said respective areas are selected so that said light reflected by said display has a different white point than light illuminating said display.

32. The method of claim 29, wherein said respective areas are selected so that said white point is one of D55, D65, or D75.

33. A display, comprising:

first means for outputting light;

second means for outputting light; and

third means for outputting light, wherein said output light of said first, second, and third means is combined to produce white light characterized by a standardized white point, said first, second, and third means comprising microelectromechanical systems.

34. The display of claim 33, wherein said first, second, and third, means for outputting light comprise a plurality of display elements, each of said display elements comprising a reflective surface configured to be positioned at a distance from a partially reflective surface.

35. The display of claim 33, further comprising means for selectively transmitting certain visible wavelengths and substantially filtering other visible wavelengths.

36. The display of claim 33, wherein said standardized white point is one of D55, D65, or D75.

37. The display of claim 33, further comprising illumination means having a different white point than said white light produced by said first, second, and third means for outputting light.

38. The display of claim 33, wherein said first and second means for outputting light comprises first and second pixels, respectively.