Phosphor material and its method of manufacture
US6673269B2 · kind B2 · utility
2Cited by
2References
27Claims
0Family size
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Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7703
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor material of the chemical composition formula (Sr1−x−y, Mgx, Cay)TiO3:Pr,Al, where the value of x+y is in the range 0.001 to 0.05. Another phosphor material has the chemical composition formula SrTiO3:Pr,Al, in which the surfaces of phosphor particles are diffused with a diffusing agent containing at least one of Be, Mg, Ca, Sr, and Ba. Still another phosphor material has the chemical composition formula SrTiO3:Pr,Al, where Sr/Ti molar ratio is 0.88 to 0.99.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.