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This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.

Inventors: Sergey A. Bukesov, Roger A. Hajjar
Current U.S. Classification: 313/496; 348/E09.026

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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US7667382Jun 20, 2007Feb 23, 2010Canon Kabushiki KaishaSubstrate having fluorescent member, image display apparatus and image receiving and displaying apparatus
US7821023May 23, 2008Oct 26, 2010Cree, Inc.Solid state lighting component
US7942850Oct 22, 2008May 17, 2011EndoCross Ltd.Balloons and balloon catheter systems for treating vascular occlusions
US8013506Dec 12, 2007Sep 6, 2011Prysm, Inc.Organic compounds for adjusting phosphor chromaticity
US8017038Dec 24, 2009Sep 13, 2011Samsung SDI Co., Ltd.Green phosphor and plasma display panel including the same
US8049230May 16, 2008Nov 1, 2011Cree Huizhou Opto LimitedApparatus and system for miniature surface mount devices
US8217412Sep 16, 2010Jul 10, 2012Cree, Inc.Solid state lighting component
US8242525May 20, 2009Aug 14, 2012Lightscape Materials, Inc.Silicate-based phosphors and LED lighting devices using the same
USD633631Dec 14, 2007Mar 1, 2011Cree Hong Kong LimitedLight source of light emitting diode
USD634863Jan 10, 2008Mar 22, 2011Cree Hong Kong LimitedLight source of light emitting diode
USD656906Dec 8, 2010Apr 3, 2012Cree Hong Kong LimitedLED package
USD662902Oct 25, 2010Jul 3, 2012Cree Hong Kong LimitedLED package

Claims

1. A display device, comprising a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light, the fluorescent layer comprising:

a plurality of parallel fluorescent stripes, wherein at least three adjacent fluorescent stripes are made of three different fluorescent materials: a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.

2. The device as in claim 1, wherein one of the different fluorescent materials in the fluorescent stripes comprises at least one of an Oxide-based phosphor, a Silicate-based phosphor, a Phosphate-based phosphor, a Borate-based phosphor, an Aluminate-based phosphor, a Gallate-based phosphor, a Molybdate-based phosphor, a Tungstate-based phosphor, a Fluoride-based phosphor, a Sulfide-based phosphor, and a Sulfoselenide-based phosphor.

3. The device as in claim 1, wherein one of the different fluorescent materials in the fluorescent stripes comprises a non-phosphor organic material.

4. The device as in claim 3, wherein the organic material comprises one of Brilliantsulfoflavine FF, Basic yellow HG, Eosine, Rhodamine 6G, and Rhodamine B.

5. The device as in claim 2, wherein the Oxide-based phosphor comprises at least one of (Y, Gd, La)2O3: (Eu, Sm, Ce, Bi); (Y, Gd, La)O2S:(Eu, Sm, Ce, Bi); (Y, Gd, La)VO4(Eu, Sm, Ce, Bi); 2SrO.0.84P2O5.0.16B2O3:Eu; SrLa2BeO5:Ce; 0.82BaO.6Al2O3:Eu; 1.29BaO.6Al2O3:Eu; (Ca, Zn)2GeO4:Mn; and (Tb(1-X-Y)(Y, La, Gd, Sm)X(Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu)Y)3(Al, Ga, In)2O12.

6. The device as in claim 2, wherein the Silicate-based phosphor comprises at least one of (Mg, Ba, Sr, Ca, Zn)2SiO4: (Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr); (Mg, Ba, Sr, Ca)SiO4:Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; (Mg, Ba, Sr, Ca)SiO5:Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; ZrSiO4:Pr; Ca3Sc2Si3O12:Ce; Y2SiO5:Tb; Y2Si2O7:Tb; CaMgSiO:Ce; Ca2MgSi2O7:Ce; (Ca, Sr)2Al2SiO7:Ce; SrAl2Si2O8:Eu; CaMgSi2O6:Eu; SrAl10SiO20:Eu; Sr3MgSi2O8:Eu; Sr1 . . . 3Mg0.7SiO4:Eu; (Ba, Sr, Ca)3MgSi2O8:Eu; Y2SiO5:Ce; Sr2Si3O8.2SrCl2:Eu; BaSi2O5:Eu; and Sr3MgSi2O7:Eu.

7. The device as in claim 2, wherein the Phosphate-based phosphor comprises at least one of Zn2(PO4)2:Mn; (Mg, Ba, Ca, Sr)5(PO4)3Cl:(Eu, Sm, Ce); and (Sr, Ca, Eu)10(PO4)6Cl2.0.24B2O3.

8. The device as in claim 2, wherein the Borate-based phosphor comprises at least one of (Y, Gd, La, Lu)BO3:Eu, Sm, Ce, Bi; Y(Mg, Ba, Ca, Sr)3(Al, Ga, Tn)3B4O15:Eu; and YCa3Ga3B4O15:Eu.

9. The device as in claim 2, wherein the Aluminate-based phosphor comprises at least one of (Y, Gd)3Al5O12:(Eu, Ce, Pr); (Mg, Ba, Ca, Sr)MgAl10O17:(Eu, Mn); (Ca, Mg, Ba, Zn)Al2O4:(Mn, Eu, Dy); (Ba, Mg, Ca, Sr)MgAl14O23:Mn, Eu; (Mg, Ba, Ca, Sr)Al12O19:Mn; and BaMg2Al16O27:Eu,Mn.

10. The device as in claim 2, wherein the Gallate-based phosphor comprises at least one of (Y, Gd)3Ga5O12: (Eu, Ce, Pr) (Ca, Mg, Ba, Zn)Ga2O4:(Mn, Eu, Dy); ZnGa2O4:Mn; and (Li0.5Ga0.5)0.5Zn0.5Ga2O4.

11. The device as in claim 2, wherein the Molybdate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XMo2O8 and (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XMo2O8:Sm.

12. The device as in claim 2, wherein the Tungstate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XW2O8; (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XW2O8:Sm; and CaWO4:Tb,Pb.

13. The device as in claim 2, wherein the Fluoride-based phosphor comprises at least one of (KF, MgF2):Mn, MgF2:Mn, (Zn, Mg)F2:Mn; 3.5MgO.0.5MgF2.GeO2:Mn; and Mg4 (F) (Ge, Sn) O6:Mn.

14. The device as in claim 2, wherein the Sulfide-based phosphor comprises at least one of (Be, Mg, Ca, Sr, Ba, Zn)S:(Eu, Ce, Cu, Ag, Al, Au, Tb, Cl, Pr, Mn, Bi); (Be, Mg, Ca, Sr, Ba, Zn) (Al, Ga, In, Y, La, Gd)2S4: (Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn); (Mg, Ca, Sr, Ba)2(Zn, Si, Ge, Sn) S3:Eu; and (Mg, Ca, Sr, Ba)2(Al, Ga, In, Y, La, Ga)2S3:Eu.

15. The device as in claim 2, wherein the Sulfoselenide-based phosphor comprises at least one of (Be, Mg, Ca, Sr, Ba, Zn)SeXS1-X:(Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn) and (Be, Mg, Ca, Sr, Ba, Zn) (Al, Ga, In, Y, La, Gd)2(SeXS1-X)4: (Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn).

16. The device as in claim 1, wherein one of the different fluorescent materials comprises at least one of (Mg, Ca, Sr, Ba)S: (Eu, Mn), (Mg, Ca, Sr, Ba)SeXS1-X:(Eu, Mn), (Zn, Cd)S:Ag,Cl, (Zn, Cd)S:Cu,Al, (KF, MgF2):Mn, MgF2:Mn, (Zn, Mg)F2:Mn, 3.5MgO.0.5MgF2 GeO2:Mn, (K, Li, Na)EuW2O8, (Y, Gd, La)2O3:(Eu, Sm, Bi), (Y, Gd, La)O2S:Eu, Sm, Bi, (Y, Gd, La)BO3(Eu, Sm, Bi), (Y, Gd, La)VO4:(Eu, Sm, Bi), and CaAlSiN3:Eu.

17. The device as in claim 1, wherein one of the different fluorescent materials comprises at least one of (Mg, Ca, Sr, Ba) (Al, Ga, In, Y, La, Gd)2S4: (Eu, Mn), (Mg, Ca, Sr, Ba) (Al, Ga, In, Y, La, Gd)2(SeXS1-X)4: (Eu, Mn), and (Ba, Sr, Ca) SiO4: (Eu, Mn).

18. The device as in claim 1, wherein one of the different fluorescent materials comprises at least one of (Ba, Mg, Sr)Al10O17: (Eu, Mn) and (Sr, Ca, Ba, Mg)10(PO4)6C12:Eu.

19. The device as in claim 1, wherein the excitation light is at an ultra violet wavelength.

20. The device as in claim 1, wherein the excitation light is at a violet wavelength.

21. The device as in claim 1, wherein the excitation light is at a wavelength less than about 420 nanometers.

22. The device as in claim 1, wherein the fluorescent layer further comprises:

a first optical absorbent material mixed in the first fluorescent material that absorbs light of the second and third colors and transmits light of the first color;

a second optical absorbent material mixed in the second fluorescent material that absorbs light of the first and third colors and transmits light of the second color; and

a third optical absorbent material mixed in the third fluorescent material that absorbs light of the first and second colors and transmits light of the third color.

23. The device as in claim 22, wherein the first optical absorbent material, the second optical absorbent material, and the third optical absorbent material substantially transmit the excitation light.

24. The device as in claim 23, wherein the excitation light is at a wavelength less than about 420 nanometers.

25. A display device, comprising

a fluorescent layer that absorbs the excitation light at a single wavelength and emits white light; and

optical filters positioned relative to the fluorescent layer to receive the white light and to transmit light of different colors, respectively.

26. The device as in claim 25, wherein the fluorescent layer comprises a non-phosphor organic material.

27. The device as in claim 26, wherein the organic material comprises one of Brilliantsulfoflavine FF, Basic yellow HG, Eosine, Rhodamine 6G, and Rhodamine B.

28. The device as in claim 25, wherein the fluorescent layer comprises at least one phosphor that absorbs the excitation light and emits light of a visible color, and where the at least one phosphor comprises at least one of an Oxide-based phosphor, a Silicate-based phosphor, a Phosphate-based phosphor, a Borate-based phosphor, an Aluminate-based phosphor, a Gallate-based phosphor, a Molybdate-based phosphor, a Tungstate-based phosphor, a Fluoride-based phosphor, a Sulfide-based phosphor, and a Sulfoselenide-based phosphor.

29. The device as in claim 28, wherein the Oxide-based phosphor comprises at least one of (Y, Gd, La)2O3:(Eu, Sm, Ce, Bi); (Y, Gd, La)O2S:(Eu, Sm, Ce, Bi); (Y, Gd, La)VO4(Eu, Sm, Ce, Bi); 2SrO.0.84P2O5.0.16B2O3:Eu; SrLa2BeO5:Ce; 0.82BaO.6Al2O3:Eu; 1.29BaO.6Al2O3:Eu; (Ca, Zn)2GeO4:Mn; and (Tb(1-X-Y)(Y, La, Gd, Sm)X(Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu)Y)3(Al, Ga, In)2O12.

30. The device as in claim 28, wherein the Silicate-based phosphor comprises at least one of (Mg, Ba, Sr, Ca, Zn)2SiO4: (Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr); (Mg, Ba, Sr, Ca)SiO4:Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; (Mg, Ba, Sr, Ca)SiO5:Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; ZrSiO4:Pr; Ca3Sc2Si3O12:Ce; Y2SiO5:Tb; Y2Si2O7:Tb; CaMgSiO:Ce; Ca2MgSi2O7:Ce; (Ca, Sr)2Al2SiO7:Ce; SrAl2Si2O8:Eu; CaMgSi2O6:Eu; SrAl10SiO20:Eu; Sr3MgSi2O8:Eu; Sr10.3Mg0.7SiO4:Eu; (Ba, Sr, Ca)3MgSi2O8:Eu; Y2SiO5:Ce; Sr2Si3O8.2SrCl2:Eu; BaSi2O5:Eu; and Sr3MgSi2O7:Eu.

31. The device as in claim 28, wherein the Phosphate-based phosphor comprises at least one of Zn2(PO4)2:Mn; (Mg, Ba, Ca, Sr)5(PO4)3Cl:(Eu, Sm, Ce); and (Sr, Ca, Eu)nO(PO4)6Cl2.0.24B2O3.

32. The device as in claim 28, wherein the Borate-based phosphor comprises at least one of (Y, Gd, La, Lu)BO3:Eu, Sm, Ce, Bi; Y(Mg, Ba, Ca, Sr)3(Al, Ga, In)3B4O15:Eu; and YCa3Ga3B4O15:Eu.

33. The device as in claim 28, wherein the Aluminate-based phosphor comprises at least one of (Y, Gd)3Al5O12:(Eu, Ce, Pr); (Mg, Ba, Ca, Sr)MgAl10O17:(Eu, Mn); (Ca, Mg, Ba, Zn)Al2O4:(Mn, Eu, Dy); (Ba, Mg, Ca, Sr)MgAl14O23:Mn, Eu; (Mg, Ba, Ca, Sr)Al12O19:Mn; and BaMg2Al16O27:Eu,Mn.

34. The device as in claim 28, wherein the Gallate-based phosphor comprises at least one of (Y, Gd)3Ga5O12:(Eu, Ce, Pr); (Ca, Mg, Ba, Zn)Ga2O4:(Mn, Eu, Dy); ZnGa2O4:Mn; and (Li0.5Ga0.5)0.5Zn0.5Ga2O4.

35. The device as in claim 28, wherein the Molybdate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XMo2O8 and (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XMo2O8:Sm.

36. The device as in claim 28, wherein the Tungstate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XW2O8; (Li, K, Na, Ag)Eu(1-X)(Y, La, Gd)XW2O8:Sm; and CaWO4:Tb,Pb.

37. The device as in claim 28, wherein the Fluoride-based phosphor comprises at least one of (KF, MgF2):Mn, MgF2:Mn, (Zn, Mg)F2:Mn; 3.5MgO.0.5MgF2.GeO2:Mn; and Mg4 (F) (Ge, Sn)O6:Mn.

38. The device as in claim 28, wherein the Sulfide-based phosphor comprises at least one of (Be, Mg, Ca, Sr, Ba, Zn)S:(Eu, Ce, Cu, Ag, Al, Au, Tb, Cl, Pr, Mn, Bi); (Be, Mg, Ca, Sr, Ba, Zn) (Al, Ga, In, Y, La, Gd)2S4: (Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn); (Mg, Ca, Sr, Ba)2(Zn, Si, Ge, Sn) S3:Eu; and (Mg, Ca, Sr, Ba)2(Al, Ga, In, Y, La, Ga)2S3:Eu.

39. The device as in claim 28, wherein the Sulfoselenide-based phosphor comprises at least one of (Be, Mg, Ca, Sr, Ba, Zn)SeXS1-X:(Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn) and (Be, Mg, Ca, Sr, Ba, Zn) (Al, Ga, In, Y, La, Gd)2(SeXS1-X)4: (Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn).

40. The device as in claim 25, wherein the fluorescent layer consists essentially of:

at least one of a red phosphor material that absorbs the excitation light and emits red color and comprises at least one of (Mg, Ca, Sr, Ba)S: (Eu, Mn), (Mg, Ca, Sr, Ba)SeXS1-X:(Eu, Mn), (Zn, Cd)S:Ag,Cl, (Zn, Cd)S:Cu,Al, (KF, MgF2):Mn, MgF2:Mn, (Zn, Mg)F2:Mn, 3.5MgO.0.5MgF2 GeO2:Mn, (K, Li, Na)EuW2O8, (Y, Gd, La)2O3:(Eu, Sm, Bi), (Y, Gd, La)O2S:Eu, Sm, Bi, (Y, Gd, La)BO3(Eu, Sm, Bi), (Y, Gd, La)VO4:(Eu, Sm, Bi), and CaAlSiN3:Eu, and a red organic material that absorbs the excitation light and emits red color;

at least one of a green phosphor material that absorbs the excitation light and emits green color comprises at least one of (Mg, Ca, Sr, Ba) (Al, Ga, In, Y, La, Gd)2S4: (Eu, Mn), (Mg, Ca, Sr, Ba) (Al, Ga, In, Y, La, Gd)2(SeXS1-X)4:(Eu, Mn), and (Ba, Sr, Ca) SiO4:(Eu, Mn), and a green organic material that absorbs the excitation light and emits green color; and

at least one of a blue phosphor material that absorbs the excitation light and emits blue color and comprises at least one of (Ba, Mg, Sr)Al10O17:(Eu, Mn) and (Sr, Ca, Ba, Mg)10(PO4)6Cl2:Eu, and a blue organic material that absorbs the excitation light and emits blue color.

41. The device as in claim 25, wherein the excitation light is at an ultra violet wavelength.

42. The device as in claim 25, wherein the excitation light is at a violet wavelength.

43. The device as in claim 25, wherein the excitation light is at a wavelength less than about 420 nanometers.

44. The device as in claim 25, wherein the fluorescent layer consists essentially of at least one of 8SrCO3.4CaCO3.11Al2O3.0.18Eu2O3; 3Ca3(PO4)2.Ca(F,Cl)2:Sb; 3Ca3(PO4)2.Ca(F,Cl)2:Sb,Mn; 3Ca3(PO4)2.Ca(F,Cl)2:Sb; BaO.TiO2P2O5; and MgWO4.

45. The device as in claim 25, wherein the fluorescent layer consists essentially of ZnS:Ag and at least one of (Zn,Cd)S:Cu,Al; ZnS:Cu,Al; Zn2SiO4:Mn; and (Zn,Mg)3(PO4)2:Mn.

Drawings