White phosphor, light emission device including the same, and liquid crystal display device including the light emission device as backlight unit
US8228465B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Aug 27, 2008 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | May 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133625
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A white phosphor including: 40 to 50 parts by weight of a blue phosphor selected from the group consisting of ZnS:(Ag,Cl), ZnS:(Ag,Al), ZnS:(Ag,Al,Cl), and a combination thereof; 20 to 30 parts by weight of a green phosphor (Sr1-xCax)Ga2S4:Eu (0≦x<0.2); and 20 to 30 parts by weight of a red phosphor selected from the group consisting of Y2O3:Eu, Y2O3:(Eu,Tb), Y2O2S:Eu, Y2O2S:(Eu,Tb), and combinations thereof. The white phosphor can be included in a light emission device. The light emission device can be included in a liquid crystal display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.