Green emitting phosphor and cathode ray tube using said phosphor
US5185553A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7785
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A green emitting phosphor for use in a color cathode ray tube and a cathode ray tube using the said green emitting phosphor are disclosed. The green emitting phosphor according to the present invention satisfies the following general formula: EQU [ZnS:CuAuAlM] (where M indicates at least one element of Ce, Tb, Eu, Sc and La.), i.e., the green emitting phosphor according to the present invention is prepared by adding a trace of one of the above mentioned rare earth elements to the conventional [ZnS:CuAuAl] green emitting phosphor. The green emitting phosphor thus prepared according to the present invention is highly luminescent and thermally stabilized, as well as improving the work efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.