Phosphor, fluorescent lamp using the same, and display device and illuminating device using fluorescent lamp
US8232715B2 · kind B2 · utility
4Cited by
7References
21Claims
0Family size
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Inventors
Key dates
| Filing date | Jul 2, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Mar 2, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7787
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor includes Eu-activated YVO4:Eu doped Pith 10 ppm to 3,000 ppm of Tb and/or 50 ppm to 4,500 ppm of Sm. The luminance of light emitted by ultraviolet excitation is higher than that of undoped YVO4:Eu.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.