Phosphor for vacuum ultraviolet ray-excited light-emitting element
US6960310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor for vacuum ultraviolet ray-excited light-emitting elements which comprises a compound represented by the following formula (I):M11−a−b−c−dM2aM3bM41−eM511−fM6c−d+e+fO19−(b+c+f)/2 (I)(wherein M1 is at least one element selected from the group consisting of La, Y and Gd, M2 is at least one element selected from the group consisting of Ce and Tb, M3 is at least one element selected from the group consisting of Ca, Sr and Ba, M4 is at least one element selected from the group consisting of Mg and Zn, M5 is at least one element selected from the group consisting of Al and Ga, and M6 is at least one element selected from the group consisting of Mn and Eu, and a, b, c, d, e and f are numbers satisfying the conditions of 0≦a<1, 0≦b≦0.6, 0≦c≦0.5, 0≦d≦0.5, 0≦e<1, 0≦f<1, a+b+c+d<1 and 0<c+d+e+f), respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.