Nitride phosphor, method for producing this nitride phosphor, and light emitting device that uses this nitride phosphor
US7854859B2 · kind B2 · utility
10Cited by
3References
15Claims
0Family size
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Key dates
| Filing date | Dec 28, 2005 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Nov 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A red phosphor with excellent luminescent characteristics, and a light emitting device that uses this phosphor are provided. The phosphor is a nitride phosphor that is activated by europium, and absorbs light from the near ultraviolet range to the blue range to emit red light. The nitride phosphor has the following general formula,MwAlxSiyBzN((2/3)w+x+(4/3)y+z):Eu2+where M is at least one element selected from the group consisting of Mg, Ca, Sr and Ba. In the general formula, w, x, y and z fall within the following ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.