Phosphor material, coating phosphor composition, and light emitting device
US8013517B2 · kind B2 · utility
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32Claims
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Key dates
| Filing date | Dec 27, 2007 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Dec 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a phosphor, a coating phosphor composition, a method for preparing the phosphor, and a light emitting device. A silicate-based phosphor is expressed in a chemical formula of (4-x-y-z)SrO.xBaO.zCaO.aMgO.2(SiO2).bM2O3:yEu, wherein M is at least one of Y, Ce, La, Nd, Gd, Tb, Yb or Lu, in which 0<x≦3.95, 0<y≦1, 0≦z<3.95, x+y+z<4, 0<a<2, and 0<b<1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.