Green-emitting phosphors and devices thereof
AssigneeDolby Intellectual Property Licensing, LLC
InventorsSamuel Joseph Camardello, Matthew David Butts, Anant A. Setlur
Life of this patent
Estimating the term…
Abstract
Green-emitting phosphors are useful in devices including an LED light source radiationally coupled and/or optically coupled to the phosphors, which are selected from [Ba1−a−bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3, where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25; and [Ba,Sr,Ca,Mg,Zn]p(UO2)q[P,V]rO(2p+2q+5r)/2, where 2.5≤p≤3.5, 1.75≤q≤2.25, 3.5≤r≤4.5.
Claims20
A green-emitting phosphor selected from
- [Ba1−a−bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3,
- where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25;
- and
- [Ba,Sr,Ca,Mg,Zn]p(UO2)q[P,V]rO(2p+2q+5r)/2,
- where 2.5≤p≤3.5, 1.75≤q≤2.25, 3.5≤r≤4.5.
A phosphor composition comprising a green-emitting phosphor and a red-emitting phosphor;
- wherein the green-emitting phosphor is selected from
- [Ba1−a−bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3,
- where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25;
- and
- [Ba,Sr,Ca,Mg,Zn]p(UO2)q[P,V]rO(2p+2q+5r)/2,
- where 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5;
- and
- the red-emitting phosphor is selected from
- [Ba,Sr,Ca]2Si5N8:Eu2+;
- [Ca,Sr]AlSiN3:Eu2+;
- [Ba,Sr,Ca]LiAl3N4:Eu2+;
- [Sr,Ca,Mg]S:Eu2+;
- and
- a phosphor of formula I
- AxMfy:Mn4+I
- wherein
- A is Li, Na, K, Rb, Cs, or a combination thereof;
- M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof;
- x is an absolute value of a charge of the MFy ion;
- and
- y is 5, 6 or 7.
A device comprising an LED light source radiationally and/or optically coupled to a green-emitting phosphor selected from
- [Ba1−a−bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3,
- where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25;
- and
- [Ba,Sr,Ca,Mg,Zn]p(UO2)q[P,V]rO(2p+2q+5r)/2,
- where 2.5≤p≤3.5, 1.75≤q≤2.25, 3.5≤r≤4.5.
Dependencies are inferred from the claim text.