Light devices, display devices, backlighting devices, edge-lighting devices, combination backlighting and edge-lighting devices

• US 9,921,428 B2
• Filed: 03/08/2011
• Issued: 03/20/2018
• Est. Priority Date: 04/18/2006
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Van De Ven, Antony Paul, Negley, Gerald H., Pyles, Shawn
• Primary Examiner(s): Hines, Anne
• Application Number:
  US13/042,663
• Publication Number:
  US 20110242453A1
• Time in Patent Office: 2,569 Days
• Field of Search: 313502-509
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0078 Side-by-side arrangements, e.g. for large area displays
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133609 including means for improving the color mixing, e.g. white
• CPC Class Codes: G02F 1/133613 characterized by the sequence of light sources
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

In some embodiments, an LCD device comprising (1) liquid crystals, (2) at least one lighting device that emits BSY-1, BSY-2, BSR, BSG-1, BSG-2 and/or BSG-3 light, (3) solid state light emitters (430-480 nm) and luminescent material (555-585 nm, 595-625 nm, or 510-560 nm), and/or (4) a light guide, a reflector and/or a light polarizer. In some embodiments, a light device comprising (1) at least one lighting device that emits BSY-1, BSY-2, BSR, BSG-1, BSG-2 and/or BSG-3 light, (2) a light guide, a reflector and/or a light polarizer, and/or (3) solid state light emitters (430-480 nm) and luminescent material (555-585 nm, 595-625 nm, or 510-560 nm).

Claims

1. An LCD device, comprising:

a plurality of liquid crystals; and

at least one lighting device that emits light that has a color point that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a first area, a second area, a third area, a fourth area, a fifth area and a sixth area,

the first area enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,

the second area enclosed by sixth, seventh, eighth, ninth and tenth line segments, the fifth line segment connecting a fifth point to a sixth point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, the ninth line segment connecting the ninth point to a tenth point, and the tenth line segment connecting the tenth point to the sixth point, the sixth point having x, y coordinates of 0.29, 0.36, the seventh point having x, y coordinates of 0.32, 0.35, the eighth point having x, y coordinates of 0.41, 0.43, the ninth point having x, y coordinates of 0.44, 0.49, and the tenth point having x, y coordinates of 0.38, 0.53,

the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23,

the fourth area enclosed by fifteenth, sixteenth, seventeenth, eighteenth and nineteenth line segments, the fifteenth line segment connecting a fifteenth point to a sixteenth point, the sixteenth line segment connecting the sixteenth point to a seventeenth point, the seventeenth line segment connecting the seventeenth point to an eighteenth point, the eighteenth line segment connecting the eighteenth point to a nineteenth point, and the nineteenth line segment connecting the nineteenth point to the fifteenth point, the fifteenth point having x, y coordinates of 0.35, 0.48, the sixteenth point having x, y coordinates of 0.26, 0.50, the seventeenth point having x, y coordinates of 0.13, 0.26, the eighteenth point having x, y coordinates of 0.15, 0.20, and the nineteenth point having x, y coordinates of 0.26, 0.28,

the fifth area enclosed by twentieth, twenty-first, twenty-second and twenty-third line segments, the twentieth line segment connecting a twentieth point to a twenty-first point, the twenty-first line segment connecting the twenty-first point to a twenty-second point, the twenty-second line segment connecting the twenty-second point to a twenty-third point, the twenty-third line segment connecting the twenty-third point to the twentieth point, the twentieth point having x, y coordinates of 0.21, 0.28, the twenty-first point having x, y coordinates of 0.26, 0.28, the twenty-second point having x, y coordinates of 0.32, 0.42, and the twenty-third point having x, y coordinates of 0.28, 0.44,

the sixth area enclosed by twenty-twenty-seventh, twenty-fifth, twenty-sixth and twenty-seventh line segments, the twenty-fourth line segment connecting a twenty-fourth point to a twenty-fifth point, the twenty-fifth line segment connecting the twenty-fifth point to a twenty-sixth point, the twenty-sixth line segment connecting the twenty-sixth point to a twenty-seventh point, the twenty-seventh line segment connecting the twenty-seventh point to the twenty-fourth point, the twenty-fourth point having x, y coordinates of 0.30, 0.49, the twenty-fifth point having x, y coordinates of 0.35, 0.48, the twenty-sixth point having x, y coordinates of 0.32, 0.42, and the twenty-seventh point having x, y coordinates of 0.28, 0.44.

2. An LCD device as recited in claim 1, wherein the LCD device further comprises at least one solid state light emitter selected from among the group consisting of:

a solid state light emitter which, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 595 nm to about 625 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 510 nm to about 560 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 555 nm to about 585 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 603 nm to about 800 nm;

a solid state light emitter which, when illuminated, emits light that has a color point on a 1931 CIE Chromaticity Diagram that is within said third area;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm, and

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 495 nm to about 580 nm.

3. An LCD device as recited in claim 1, wherein the LCD device comprises at least a first surface mount solid state light emitter.

4. An LCD device as recited in claim 1, wherein the LCD device comprises at least a first lateral-emitting solid state light emitter selected from among sidelooker light emitting diodes and side emitter light emitting diodes.

5. An LCD device as recited in claim 4, wherein the first lateral-emitting solid state light emitter is a sidelooker light emitting diode that emits light that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one of said first area and said second area.

6. An LCD device as recited in claim 1, wherein:

the LCD device comprises at least a first lateral-emitting solid state light emitter and a second lateral-emitting solid state light emitter,

the first lateral-emitting solid state light emitter is a sidelooker light emitting diode that emits light having a color point on a 1931 CIE Chromaticity Diagram that is within at least one of said first area and said second area, and

the second lateral-emitting solid state light emitter is a sidelooker light emitting diode that emits red light.

7. An LCD device as recited in claim 1, wherein the LCD device comprises at least one surface mount solid state light emitter and at least one lateral-emitting solid state light emitter selected from among sidelooker light emitting diodes and side emitter light emitting diodes.

8. An LCD device as recited in claim 1, wherein the LCD device comprises at least one light emitter that emits light that travels directly to another component of the LCD device.

9. An LCD device as recited in claim 1, wherein the LCD device comprises at least one light emitter selected from among sidelooker light emitting diodes and side emitter light emitting diodes, that emits light that travels indirectly to another component of the LCD device.

10. An LCD device as recited in claim 1, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within at least two of the first, second, third, fourth, fifth and sixth areas on the 1931 CIE Chromaticity Diagram.

11. An LCD device as recited in claim 10, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within:

[1] the first area and the third area;

[2] the first area and the fourth area;

[3] the first area and the fifth area;

[4] the first area and the sixth area;

[5] the second area and the third area;

[6] the second area and the fourth area;

[7] the second area and the fifth area;

[8] the second area and the sixth area;

[9] the third area and the fourth area;

[10] the third area and the fifth area;

or

[11] the third area and the sixth area.

12. An LCD device as recited in claim 10, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within:

[1] the first area and the third area;

or

[2] the second area and the third area.

13. A light device, comprising:

at least one lighting device that emits light that has a color point that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a first area, a second area, a third area, a fourth area, a fifth area and a sixth area,

the first area enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,

the second area enclosed by sixth, seventh, eighth, ninth and tenth line segments, the fifth line segment connecting a fifth point to a sixth point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, the ninth line segment connecting the ninth point to a tenth point, and the tenth line segment connecting the tenth point to the sixth point, the sixth point having x, y coordinates of 0.29, 0.36, the seventh point having x, y coordinates of 0.32, 0.35, the eighth point having x, y coordinates of 0.41, 0.43, the ninth point having x, y coordinates of 0.44, 0.49, and the tenth point having x, y coordinates of 0.38, 0.53,

the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23,

the fourth area enclosed by fifteenth, sixteenth, seventeenth, eighteenth and nineteenth line segments, the fifteenth line segment connecting a fifteenth point to a sixteenth point, the sixteenth line segment connecting the sixteenth point to a seventeenth point, the seventeenth line segment connecting the seventeenth point to an eighteenth point, the eighteenth line segment connecting the eighteenth point to a nineteenth point, and the nineteenth line segment connecting the nineteenth point to the fifteenth point, the fifteenth point having x, y coordinates of 0.35, 0.48, the sixteenth point having x, y coordinates of 0.26, 0.50, the seventeenth point having x, y coordinates of 0.13, 0.26, the eighteenth point having x, y coordinates of 0.15, 0.20, and the nineteenth point having x, y coordinates of 0.26, 0.28,

the fifth area enclosed by twentieth, twenty-first, twenty-second and twenty-third line segments, the twentieth line segment connecting a twentieth point to a twenty-first point, the twenty-first line segment connecting the twenty-first point to a twenty-second point, the twenty-second line segment connecting the twenty-second point to a twenty-third point, the twenty-third line segment connecting the twenty-third point to the twentieth point, the twentieth point having x, y coordinates of 0.21, 0.28, the twenty-first point having x, y coordinates of 0.26, 0.28, the twenty-second point having x, y coordinates of 0.32, 0.42, and the twenty-third point having x, y coordinates of 0.28, 0.44,

the sixth area enclosed by twenty-twenty-seventh, twenty-fifth, twenty-sixth and twenty-seventh line segments, the twenty-fourth line segment connecting a twenty-fourth point to a twenty-fifth point, the twenty-fifth line segment connecting the twenty-fifth point to a twenty-sixth point, the twenty-sixth line segment connecting the twenty-sixth point to a twenty-seventh point, the twenty-seventh line segment connecting the twenty-seventh point to the twenty-fourth point, the twenty-fourth point having x, y coordinates of 0.30, 0.49, the twenty-fifth point having x, y coordinates of 0.35, 0.48, the twenty-sixth point having x, y coordinates of 0.32, 0.42, and the twenty-seventh point having x, y coordinates of 0.28, 0.44; and

at least one of;

(a) at least one light guide, (b) at least one reflector, and (c) at least one light polarizer.

14. A light device as recited in claim 13, wherein the light device further comprises at least one solid state light emitter selected from among the group consisting of:

a solid state light emitter which, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 595 nm to about 625 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 510 nm to about 560 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 555 nm to about 585 nm;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 603 nm to about 800 nm;

a solid state light emitter which, when illuminated, emits light having a color point on a 1931 CIE Chromaticity Diagram that is within said third area;

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm, and

a solid state light emitter which, when illuminated, emits light having a dominant wavelength in the range of from about 495 nm to about 580 nm.

15. A light device as recited in claim 13, wherein:

the light device comprises at least a first light guide,

the first light guide has first, second and third orthogonal dimensions, and

each of the first and second orthogonal dimensions is at least twenty times the third orthogonal dimension.

16. A light device as recited in claim 13, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least one of an input face and an input edge,

the first light guide stretches light along an axis substantially parallel with the input region.

17. A light device as recited in claim 13, wherein

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least one of an input face and an input edge,

the at least one lighting device comprises at least a first lighting device,

a surface area of the first light input region is greater than a surface area of the first lighting device from which light is emitted.

18. A light device as recited in claim 17, wherein the first lighting device comprises a lateral-emitting light emitter.

19. A light device as recited in claim 18, wherein the lateral-emitting light emitter is of a shape selected from among rectangular, square and round.

20. A light device as recited in claim 13, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within at least two of the first, second, third, fourth, fifth and sixth areas on the 1931 CIE Chromaticity Diagram.

21. A light device as recited in claim 20, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within:

[1] the first area and the third area;

[2] the first area and the fourth area;

[3] the first area and the fifth area;

[4] the first area and the sixth area;

[5] the second area and the third area;

[6] the second area and the fourth area;

[7] the second area and the fifth area;

[8] the second area and the sixth area;

[9] the third area and the fourth area;

[10] the third area and the fifth area;

or

[11] the third area and the sixth area.

22. A light device as recited in claim 20, wherein the LCD device comprises lighting devices that emit light that have respective color points that are within:

[1] the first area and the third area;

or

[2] the second area and the third area.

23. A light device as recited in claim 13, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

24. A light device as recited in claim 23, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

41. A light device as recited in claim 24, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

42. A light device as recited in claim 41, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

25. A light device, comprising:

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 555 nm to about 585 nm; and

at least one of;

(a) at least one light guide, having at least a first light entry region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material enters, and at least a first light exit region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material exits, a surface area of the at least a first light exit region larger than a surface area of the at least a first entry region, and (b) at least one light polarizer.

26. A light device as recited in claim 25, wherein at least a portion of the first luminescent material is provided in at least a first lumiphor.

27. A light device as recited in claim 25, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a first area and a second area,

the first area enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,

the second area enclosed by sixth, seventh, eighth, ninth and tenth line segments, the fifth line segment connecting a fifth point to a sixth point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, the ninth line segment connecting the ninth point to a tenth point, and the tenth line segment connecting the tenth point to the sixth point, the sixth point having x, y coordinates of 0.29, 0.36, the seventh point having x, y coordinates of 0.32, 0.35, the eighth point having x, y coordinates of 0.41, 0.43, the ninth point having x, y coordinates of 0.44, 0.49, and the tenth point having x, y coordinates of 0.38, 0.53.

28. A light device as recited in claim 25, wherein when the first group of solid state light emitters is illuminated and at least a portion of the first luminescent material is excited, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a first area and a second area,

the first area enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,

the second area enclosed by sixth, seventh, eighth, ninth and tenth line segments, the fifth line segment connecting a fifth point to a sixth point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, the ninth line segment connecting the ninth point to a tenth point, and the tenth line segment connecting the tenth point to the sixth point, the sixth point having x, y coordinates of 0.29, 0.36, the seventh point having x, y coordinates of 0.32, 0.35, the eighth point having x, y coordinates of 0.41, 0.43, the ninth point having x, y coordinates of 0.44, 0.49, and the tenth point having x, y coordinates of 0.38, 0.53.

29. A light device as recited in claim 25, wherein the light device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm.

30. A light device as recited in claim 25, wherein the light device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm, and when the first group of solid state light emitters is illuminated and the second group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters, light exiting the lighting device which was emitted from the first luminescent material and light exiting the lighting device which was emitted from the second group of solid state light emitters would produce a first group-second group mixed illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point within the range of from about 2200K to about 20,000K on the blackbody locus on a 1931 CIE Chromaticity Diagram.

31. A light device as recited in claim 25, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

32. A light device as recited in claim 31, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

62. An LCD device as recited in claim 30, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

63. An LCD device as recited in claim 62, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

33. A light device, comprising:

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 595 nm to about 625 nm; and

at least one of;

(a) at least one light guide, having at least a first light entry region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material enters, and at least a first light exit region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material exits, a surface area of the at least a first light exit region larger than a surface area of the at least a first entry region, and (b) at least one light polarizer.

34. A light device as recited in claim 33, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within a third area, the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23.

35. A light device as recited in claim 33, wherein the light device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 495 nm to about 580 nm.

36. A light device as recited in claim 33, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

37. A light device as recited in claim 36, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

38. A light device, comprising:

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 510 nm to about 560 nm; and

at least one of;

(a) at least one light guide, having at least a first light entry region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material enters, and at least a first light exit region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material exits, a surface area of the at least a first light exit region larger than a surface area of the at least a first entry region, and (b) at least one light polarizer.

39. A light device as recited in claim 38, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a fourth area, a fifth area and a sixth area,

the fourth area enclosed by fifteenth, sixteenth, seventeenth, eighteenth and nineteenth line segments, the fifteenth line segment connecting a fifteenth point to a sixteenth point, the sixteenth line segment connecting the sixteenth point to a seventeenth point, the seventeenth line segment connecting the seventeenth point to an eighteenth point, the eighteenth line segment connecting the eighteenth point to a nineteenth point, and the nineteenth line segment connecting the nineteenth point to the fifteenth point, the fifteenth point having x, y coordinates of 0.35, 0.48, the sixteenth point having x, y coordinates of 0.26, 0.50, the seventeenth point having x, y coordinates of 0.13, 0.26, the eighteenth point having x, y coordinates of 0.15, 0.20, and the nineteenth point having x, y coordinates of 0.26, 0.28,

the fifth area enclosed by twentieth, twenty-first, twenty-second and twenty-third line segments, the twentieth line segment connecting a twentieth point to a twenty-first point, the twenty-first line segment connecting the twenty-first point to a twenty-second point, the twenty-second line segment connecting the twenty-second point to a twenty-third point, the twenty-third line segment connecting the twenty-third point to the twentieth point, the twentieth point having x, y coordinates of 0.21, 0.28, the twenty-first point having x, y coordinates of 0.26, 0.28, the twenty-second point having x, y coordinates of 0.32, 0.42, and the twenty-third point having x, y coordinates of 0.28, 0.44,

the sixth area enclosed by twenty-twenty-seventh, twenty-fifth, twenty-sixth and twenty-seventh line segments, the twenty-fourth line segment connecting a twenty-fourth point to a twenty-fifth point, the twenty-fifth line segment connecting the twenty-fifth point to a twenty-sixth point, the twenty-sixth line segment connecting the twenty-sixth point to a twenty-seventh point, the twenty-seventh line segment connecting the twenty-seventh point to the twenty-fourth point, the twenty-fourth point having x, y coordinates of 0.30, 0.49, the twenty-fifth point having x, y coordinates of 0.35, 0.48, the twenty-sixth point having x, y coordinates of 0.32, 0.42, and the twenty-seventh point having x, y coordinates of 0.28, 0.44.

40. A light device as recited in claim 38, wherein the light device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 603 nm to about 800 nm and/or light that has a color point on a 1931 CIE Chromaticity Diagram that is within a third area, the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23.

43. An LCD device, comprising:

a plurality of liquid crystals; and

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 555 nm to about 585 nm.

44. An LCD device as recited in claim 43, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a first area and a second area,

the first area enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,

the second area enclosed by sixth, seventh, eighth, ninth and tenth line segments, the fifth line segment connecting a fifth point to a sixth point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, the ninth line segment connecting the ninth point to a tenth point, and the tenth line segment connecting the tenth point to the sixth point, the sixth point having x, y coordinates of 0.29, 0.36, the seventh point having x, y coordinates of 0.32, 0.35, the eighth point having x, y coordinates of 0.41, 0.43, the ninth point having x, y coordinates of 0.44, 0.49, and the tenth point having x, y coordinates of 0.38, 0.53.

45. An LCD device as recited in claim 43, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm.

46. An LCD device, comprising:

a plurality of liquid crystals; and

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 595 nm to about 625 nm.

47. An LCD device as recited in claim 46, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within a third area, the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23.

48. An LCD device as recited in claim 46, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 495 nm to about 580 nm.

49. An LCD device, comprising:

a plurality of liquid crystals; and

at least one lighting device comprising a first group of solid state light emitters and at least a first luminescent material, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm; and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 510 nm to about 560 nm.

50. An LCD device as recited in claim 49, wherein when the first group of solid state light emitters is illuminated, a mixture of light exiting the lighting device which was emitted from the first group of solid state light emitters and light exiting the lighting device which was emitted from the first luminescent material would, in the absence of any additional light, have a first group mixed illumination that has a color point on a 1931 CIE Chromaticity Diagram that is within at least one area on a 1931 CIE Chromaticity Diagram selected from among a fourth area, a fifth area and a sixth area,

the fourth area enclosed by fifteenth, sixteenth, seventeenth, eighteenth and nineteenth line segments, the fifteenth line segment connecting a fifteenth point to a sixteenth point, the sixteenth line segment connecting the sixteenth point to a seventeenth point, the seventeenth line segment connecting the seventeenth point to an eighteenth point, the eighteenth line segment connecting the eighteenth point to a nineteenth point, and the nineteenth line segment connecting the nineteenth point to the fifteenth point, the fifteenth point having x, y coordinates of 0.35, 0.48, the sixteenth point having x, y coordinates of 0.26, 0.50, the seventeenth point having x, y coordinates of 0.13, 0.26, the eighteenth point having x, y coordinates of 0.15, 0.20, and the nineteenth point having x, y coordinates of 0.26, 0.28,

the fifth area enclosed by twentieth, twenty-first, twenty-second and twenty-third line segments, the twentieth line segment connecting a twentieth point to a twenty-first point, the twenty-first line segment connecting the twenty-first point to a twenty-second point, the twenty-second line segment connecting the twenty-second point to a twenty-third point, the twenty-third line segment connecting the twenty-third point to the twentieth point, the twentieth point having x, y coordinates of 0.21, 0.28, the twenty-first point having x, y coordinates of 0.26, 0.28, the twenty-second point having x, y coordinates of 0.32, 0.42, and the twenty-third point having x, y coordinates of 0.28, 0.44,

the sixth area enclosed by twenty-twenty-seventh, twenty-fifth, twenty-sixth and twenty-seventh line segments, the twenty-fourth line segment connecting a twenty-fourth point to a twenty-fifth point, the twenty-fifth line segment connecting the twenty-fifth point to a twenty-sixth point, the twenty-sixth line segment connecting the twenty-sixth point to a twenty-seventh point, the twenty-seventh line segment connecting the twenty-seventh point to the twenty-fourth point, the twenty-fourth point having x, y coordinates of 0.30, 0.49, the twenty-fifth point having x, y coordinates of 0.35, 0.48, the twenty-sixth point having x, y coordinates of 0.32, 0.42, and the twenty-seventh point having x, y coordinates of 0.28, 0.44.

51. An LCD device as recited in claim 49, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 603 nm to about 800 nm and/or light that has a color point on a 1931 CIE Chromaticity Diagram that is within a third area, the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23.

52. An LCD device, comprising:

at least one lighting device comprising;

a first group of solid state light emitters and at least a first luminescent material, and

at least one of;

(a) at least one light guide, having at least a first light entry region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material enters, and at least a first light exit region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material exits, a surface area of the at least a first light exit region larger than a surface area of the at least a first entry region, (b) at least one reflector, and (c) at least one light polarizer, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm, and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 555 nm to about 585 nm.

53. An LCD device as recited in claim 52, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about −

495 nm to about −

580 nm.

54. An LCD device as recited in claim 52, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

55. An LCD device as recited in claim 54, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

56. An LCD device, comprising:

at least one lighting device comprising;

a first group of solid state light emitters and at least a first luminescent material, and

at least one of;

(a) at least one light guide, (b) at least one reflector, and (c) at least one light polarizer, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm, and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 595 nm to about 625 nm.

57. An LCD device as recited in claim 56, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 495 nm to about 580 nm.

58. An LCD device as recited in claim 56, wherein:

the light device comprises at least a first light guide,

the first light guide comprises at least a first light input region that comprises at least a first input edge.

59. An LCD device as recited in claim 58, wherein:

the first light guide comprises at least one peripheral region, and

the at least one peripheral region comprises the first input edge.

60. An LCD device, comprising:

at least one lighting device comprising;

a first group of solid state light emitters and at least a first luminescent material, and

at least one of;

(a) at least one light guide, having at least a first light entry region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material enters, and at least a first light exit region, through which at least some light emitted by the first group of solid state light emitters and at least some light emitted by the first luminescent material exits, a surface area of the at least a first light exit region larger than a surface area of the at least a first entry region, and (b) at least one reflector, and (c) at least one light polarizer, wherein;

the first group of solid state light emitters, when illuminated, emits light having a peak wavelength in the range of from about 430 nm to about 480 nm, and

the first luminescent material, when excited, emits light having a dominant wavelength in the range of from about 510 nm to about 560 nm.

61. An LCD device as recited in claim 60, wherein the LCD device further comprises a second group of solid state light emitters which, when illuminated, emits light having a dominant wavelength in the range of from about 603 nm to about 800 nm and/or light that has a color point on a 1931 CIE Chromaticity Diagram that is within a third area, the third area enclosed by eleventh, twelfth, thirteenth and fourteenth line segments, the eleventh line segment connecting an eleventh point to a twelfth point, the twelfth line segment connecting the twelfth point to a thirteenth point, the thirteenth line segment connecting the thirteenth point to a fourteenth point, the fourteenth line segment connecting the fourteenth point to the eleventh point, the eleventh point having x, y coordinates of 0.57, 0.35, the twelfth point having x, y coordinates of 0.62, 0.32, the thirteenth point having x, y coordinates of 0.37, 0.16, and the fourteenth point having x, y coordinates of 0.40, 0.23.