Low-velocity electron excited phosphor of blue luminous color
US5478499A · kind A · utility
9Cited by
1References
2Claims
0Family size
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Key dates
| Filing date | May 24, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | May 24, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/623
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low-velocity electron excited phosphor capable of exhibiting increased luminance and a stabilized blue tone. The phosphor is formed of ZnO.Ga.sub.2 O.sub.3 doped with Li and P, wherein the Li and P are doped in amounts of 500 to 2300 ppm and 100 ppm or less, respectively. Such construction permits the phosphor to exhibit a blue luminous color of a desirable tone having a value y of 0.05 to 0.25 in a CIE chromaticity diagram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.