Phosphor, phosphor paste, and vacuum ultraviolet excited light-emitting device
US7528537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2004 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | May 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/63
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor having small reduction in brightness when exposed to the plasma, a phosphor paste comprising the phosphor are provided. The phosphor comprises the following fluorescent substances I and II, wherein the fluorescent substance I contains silicate and Mn as an activator and the fluorescent substance II contains a compound represented by the formula (1) or a compound represented by the formula (2) and Tb as the activator.(M11−aM2a)(Mg1−b−cZnb)Al11−dMnc+dO19−(a+d)/2 (1)[In the formula (1), M1 is at least one selected from the group consisting of La, Y and Gd, M2 is at least one selected from the group consisting of Ca, Sr and Ba, a is not less than 0 and not more than 0.6, b is not less than 0 and not more than 1, c is not less than 0 and not more than 0.5, d is not less than 0 and not more than 0.5, b+c is not more than 1 and c+d is more than 0 and not more than 0.5.]M32O3.mAl2O3.nB2O3 (2)[In the formula (2), M3 is at least one selected from the group consisting of La, Y and Gd, m is not less than 2.5 and not more than 4.5 and n is not less than 3.5 and not more than 5.5.]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.