Zinc silicate phosphor with extended florescence decay and cathode ray tube containing the same
US4315190A · kind A · utility
7Cited by
10References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 15, 1980 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Dec 15, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7442
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A white bodied green-emitting phosphor having improved persistence and brightness comprises manganese activated zinc silicate incorporating arsenic and an alkali metal wherein the arsenic to zinc atom ratio ranges between about 0.00005 to about 0.001 and wherein the alkali metal is present in an amount of between about 0.5 to about 2.0 times the concentration of arsenic present in the phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.