Phosphor and LEDs containing same
US8766528B2 · kind B2 · utility
0Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Aug 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9661
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (Y1-x-yGdxCey)3(Al1-zScz)5O12 wherein 0<x≦0.3, 0<y≦0.04 and 0<z≦0.3. White pc-LEDs containing the phosphor exhibit less sensitivity to variations in the blue emission of LED dies than pc-LEDs containing conventional YAG:Ce and YGdAG:Ce phosphors. The phosphor may used in multiple pc-LED configurations including as a sintered ceramic converter or applied as a powder dispersed in a silicone encapsulant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.