Light emitting apparatus
US8040041B2 · kind B2 · utility
4Cited by
2References
10Claims
0Family size
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Inventors
Key dates
| Filing date | Jan 16, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A red nitride phosphor of formula (I) or (II), and two green phosphors of formulas (III) and/or (IV) are included.MwAlxSiyBzN((2/3)w+x+(4/3)y+z):Eu2+ (I)M is any of Mg, Ca, Sr and Ba, and 0.5≦w≦3, x=1, 0.5≦y≦3 and 0≦z≦0.5,MpSiqN((2/3)p+(4/3)q):EU2+ (II)1.5≦p≦2.5 and 4.5≦q≦5.5,MxMgSizOaXb:Eu2+ (III)M is any of Ca, Sr, Ba, Zn and Mn, X is any of F, Cl, Br and I, and 6.5≦x<8.0, 3.7≦z≦4.3, a=x+1+2z−b/2 and 1.0≦b≦1.9,SicAldOfNg:Eu2+ (IV)c+d=6, 5.0≦c<6, 0<d≦1.0, 0.001<f≦1, 7≦g<8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.