Oxynitride phosphor and production process thereof, and light-emitting device using oxynitride phosphor
US7794624B2 · kind B2 · utility
8Cited by
6References
41Claims
0Family size
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Key dates
| Filing date | Oct 15, 2003 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | May 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.