White light emitting phosphor and light emitting module using the same
US7618557B2 · kind B2 · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2007 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | May 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides a phosphor capable of emitting a white light by itself and a light emitting module using the phosphor. A white light emitting phosphor is represented by the following formula, and it is preferable that an excitation peak wavelength may be in a range of 350 to 420 nm: Ba4−x−y−zMgxSi2O8: Euy, Mnz (0.7≦x<1, 0<y and 0<z). The white light emitting phosphor can constitute the light emitting module with a semiconductor light emitting device having an emission peak wavelength from 350 to 420 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.