Oxynitride phosphor and a light emitting device
US7597821B2 · kind B2 · utility
5Cited by
1References
14Claims
0Family size
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Key dates
| Filing date | Aug 29, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Dec 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
One preferred embodiment according to the present invention, there is provided an oxynitride phosphor and a light emitting device using the same that is able to reduce production costs and chromaticity shifts. The phosphor is represented by a general formula of (Ca1-zYz)x(Si, Al)12(O, N)16:Eu2+y, and has a main phase of substantially an alpha SiAlON crystal structure, wherein the value z is larger than 0 and smaller than 0.15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.