Zinc sulfide electroluminescent phosphor particles and electroluminescent lamp made therefrom
US5309071A · kind A · utility
13Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A copper- and/or manganese-activated zinc sulfide electroluminescent phosphor is made by coating particles of a ferroelectric material with a very thin coating of the phosphor. The phosphor is made by reacting zinc- and copper- and/or manganese-containing species with hydrogen sulfide and hydrogen chloride gases in a low-temperature vapor state reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.