Moisture-resistant phosphor and associated method
US8057706B1 · kind B1 · utility
61Cited by
4References
24Claims
0Family size
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Key dates
| Filing date | Jul 27, 2010 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jul 27, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor material contains encapsulated particles of manganese (Mn4+) doped fluoride phosphor. A method of encapsulating such particles is also provided. Each particle is encapsulated with a layer of a manganese-free fluoride phosphor. The use of such a phosphor material in a lighting apparatus results in improved stability and acceptable lumen maintenance over the course of the apparatus life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.