High brightness orange-yellow-emitting electroluminescent phosphor and method of making
US6682664B1 · kind B1 · utility
6Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/612
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An orange-yellow-emitting zinc sulfide-based electroluminescent phosphor is described wherein the phosphor has a brightness of greater than 10 foot-Lamberts. More particularly, the phosphor has a brightness of at least about 13 foot-Lamberts and an x color coordinate from about 0.51 to about 0.56 and a y color coordinate from about 0.42 to about 0.48. The zinc sulfide phosphor is activated with manganese, copper, chlorine, and a metal selected from gold and antimony.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.