Method for making long-life electroluminescent phosphor
US6686043B1 · kind B1 · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Sep 12, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of coating phosphor particles comprises introducing an inert gas into a reaction vessel and charging phosphor particles into the reaction vessel. The reaction vessel is then heated to a reaction temperature and a coating precursor is introduced while the temperature is maintained for a time sufficient to saturate the phosphor particles with the precursor. Thereafter, continuous precursor is introduced into the reaction vessel, along with an oxygen/ozone mixture. The inert gas flow, oxygen/ozone mixture flow and further precursor are supplied for a time sufficient to coat the phosphor particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.