Cathode-ray tube having activated green and blue phosphors
US5825124A · kind A · utility
2Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Mar 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cathode-ray tube includes a phosphor screen having a tricolor phosphor layer composed of a red phosphor, a green phosphor of ZnS:Cu, Al activated with Ni, Fe, or Co, and a blue phosphor of ZnS:Ag activated with Ni, Fe, or Co. The green phosphor and the blue phosphor have a decay intensity of at most 0.5% upon elapse of 8 milliseconds after excitation is removed therefrom. The green phosphor of ZnS:Cu, Al activated with Ni and the blue phosphor of ZnS:Ag activated with Ni have their afterglow characteristics substantially equalized to the afterglow characteristics of the red phosphor of Y.sub.2 O.sub.2 S:Eu.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.