Single-component white-emitting electroluminescent phosphor and method of making same
US6770221B1 · kind B1 · utility
2Cited by
1References
21Claims
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Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A single-component white-emitting electroluminescent phosphor and its method of making are described. The single-component phosphor exhibits a white emission having an x color coordinate of 0.23 to 0.41 and a y color coordinate of 0.25 to 0.42. The phosphor is comprised of zinc sulfide activated with copper, manganese, chlorine, and, optionally, one or more metals selected from gold and antimony.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.