Phosphorescent phosphor and method of manufacturing thereof
US7427365B2 · kind B2 · utility
4Cited by
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Key dates
| Filing date | Nov 5, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Oct 5, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7792
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphorescent phosphor having excellent afterglow luminance characteristics, even under low illumination intensity of radiation conditions, compared to conventional strontium aluminate phosphorescent phosphors of the same type, and particularly a phosphorescent phosphor having excellent initial afterglow luminance characteristics, with following requirements: 0.015<Eu/(Sr+Eu+Dy)≦0.05, 0.4≦Dy/Eu≦2, and 2.02≦Al/(Sr+Eu+Dy)≦2.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.