Granted Patent B2

US 8,013,506 · App. 11/955,344 · Granted Sep 6, 2011

Abstract

Claims (17)

1. A method of adjusting an emission spectrum of a fluorescent layer in a fluorescent display that absorbs an excitation light at a single wavelength and emits visible light, the method comprising: generating a first mixture by combining one or more first non-phosphor organic compounds with a first binder material, wherein the first mixture substantially transmits the excitation light and substantially absorbs a portion of a respective emission spectrum of a first phosphor material; combining the first mixture with the first phosphor material to obtain a second mixture; generating a third mixture by combining one or more second non-phosphor organic compounds with a second binder material, wherein the third mixture substantially transmits the excitation light and substantially absorbs a portion of a respective emission spectrum of a second phosphor material; combining the third mixture with the second phosphor material to obtain a fourth mixture, wherein the fourth mixture and the second mixture have respective emission spectra that are different from each other; and applying the second mixture and the fourth mixture respectively on a substrate to form at least two adjacent fluorescent stripes on the substrate, wherein the at least two adjacent fluorescent stripes are configured to form two different colored sub-pixels of a same pixel when irradiated by the excitation light.

2. The method of claim 1 , wherein at least the one or more first or second non-phosphor organic compounds comprise one of Fluorescein basic ethanol, Eosin Y, Rhodamine 123, Rhodamine 6G, Rhodamine B, Rose Bengal and Victoria Blue.

3. The method of claim 1 , wherein at least the first or the second phosphor material 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 Nitride-based and Oxynitride-based phosphor.

4. The method of claim 3 , wherein the Oxide-based phosphor comprises at least one of (Y, Gd, La) 2 O 3 :(Eu, Sm, Ce, Bi); (Y, Gd, La)O 2 S:(Eu, Sm, Ce, Bi); (Y, Gd, La)VO 4 (Eu, Sm, Ce, Bi); 2SrO.0.84P 2 O 5 .0.16B 2 O 3 :Eu; SrLa 2 BeO 5 :Ce; 0.82BaO.6Al 2 O 3 :Eu; 1.29BaO.6Al 2 O 3 :Eu; (Ca, Zn) 2 GeO 4 :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) 2 O 12 .

5. The method of claim 3 , wherein the Silicate-based phosphor comprises at least one of (Mg, Ba, Sr, Ca, Zn) 2 SiO 4 :(Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr); (Mg, Ba, Sr, Ca)SiO 4 :Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; (Mg, Ba, Sr, Ca)SiO 5 :Eu, Ce, Mn, Ti, Pb, Sn, Li, Pr; ZrSiO 4 :Pr; Ca 3 Sc 2 Si 3 O 12 :Ce; Y 2 SiO 5 :Tb; Y 2 Si 2 O 7 :Tb; CaMgSiO:Ce; Ca 2 MgSi 2 O 7 :Ce; (Ca, Sr) 2 Al 2 SiO 7 :Ce; SrAl 2 Si 2 O 8 :Eu; CaMgSi 2 O 6 :Eu; SrAl 10 SiO 20 :Eu; Sr 3 MgSi 2 O 8 :Eu; Sr 1 . . . 3 Mg 0.7 SiO 4 :Eu; (Ba, Sr, Ca) 3 MgSi 2 O 8 :Eu; Y 2 SiO 5 :Ce; Sr 2 Si 3 O 8 .2SrCl 2 :Eu; BaSi 2 O 5 :Eu; and Sr 3 MgSi 2 O 7 :Eu.

6. The method of claim 3 , wherein the Phosphate-based phosphor comprises at least one of Zn 2 (PO 4 ) 2 :Mn; (Mg, Ba, Ca, Sr) 5 (PO 4 ) 3 Cl:(Eu, Sm, Ce); and (Sr, Ca, Eu) 10 (PO 4 ) 6 Cl 2 .0.24B 2 O 3 .

7. The method of claim 3 , wherein the Borate-based phosphor comprises at least one of (Y, Gd, La, Lu)BO 3 :Eu, Sm, Ce, Bi; Y(Mg, Ba, Ca, Sr) 3 (Al, Ga, In) 3 B 4 O 15 :Eu; and YCa 3 Ga 3 B 4 O 15 :Eu.

8. The method of claim 3 , wherein the Aluminate-based phosphor comprises at least one of (Y, Gd) 3 Al 5 O 12 :(Eu, Ce, Pr); (Mg, Ba, Ca, Sr)MgAl 10 O 17 :(Eu, Mn); (Ca, Mg, Ba, Zn)Al 2 O 4 :(Mn, Eu, Dy); (Ba, Mg, Ca, Sr)MgAl 14 O 23 :Mn, Eu; (Mg, Ba, Ca, Sr)Al 12 O 19 :Mn; and BaMg 2 Al 16 O 27 :Eu, Mn.

9. The method of claim 3 , wherein the Gallate-based phosphor comprises at least one of (Y, Gd) 3 Ga 5 O 12 :(Eu, Ce, Pr); (Ca, Mg, Ba, Zn)Ga 2 O 4 :(Mn, Eu, Dy); ZnGa 2 O 4 :Mn; and (Li 0.5 Ga 0.5 ) 0.5 Zn 0.5 Ga 2 O 4 .

10. The method of claim 3 , wherein the Molybdate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu (1-X) (Y, La, Gd) x Mo 2 O 8 and(Li, K, Na, Ag)Eu (1-X) (Y, La, Gd) X Mo 2 O 8 :Sm.

11. The method of claim 3 , wherein the Tungstate-based phosphor comprises at least one of (Li, K, Na, Ag)Eu (1-X) (Y, La, Gd) X W 2 O 8 ; (Li, K, Na, Ag)Eu (1-X) (Y, La, Gd) X W 2 O 8 :Sm; and CaWO 4 :Tb,Pb.

12. The method of claim 3 , wherein the Fluoride-based phosphor comprises at least one of (KF, MgF2):Mn; MgF2:Mn, (Zn, Mg)F 2 :Mn; 3.5MgO.0.5MgF 2 .GeO 2 :Mn; and Mg 4 (F)(Ge, Sn)O 6 :Mn.

13. The method of claim 3 , 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) 2 S 4 : (Eu, Ce, Cu, Ag, Al, Tb, Cl, Pr, Mn); (Mg, Ca, Sr, Ba) 2 (Zn, Si, Ge, Sn)S 3 :Eu; and (Mg, Ca, Sr, Ba) 2 (Al, Ga, In, Y, La, Ga) 2 S 3 :Eu.

14. The method of claim 3 , wherein the Nitride-based and Oxynitride-based phosphor comprises at least one of Ca 2 Si 5 N 8 :Eu; SrSi 2 O 2 N 2 :Eu; CaAlSiN 3 :Eu; Si 6 AlON 8 ; Si 3 N 4 -M 2 O 3 —CaO—AlN—Al 2 O 3 ; LaSi 3 N 5 :Ce; and (Li, Ca, Mg, Y)Si 12 AlON 16 : (Ce, P, Eu, Tb, Yb, Er, Dy).

15. The method of claim 1 , wherein at least the first or the second binder material is one selected from a group of an epoxy or a silicon resin.

16. The method of claim 1 , wherein the excitation light is at an ultra violet wavelength.

17. The method of claim 1 , wherein the excitation light is at a wavelength less than about 450 nanometers.

Assignments (8)