Yttrium substituted barium thioaluminate phosphor materials
US6982124B2 · kind B2 · utility
2Cited by
6References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2003 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thiasluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing a Group IIIB element as a partial substitute for a portion of aluminum, gallium or indium of the thiogallate, thioindate and thioaluminate. The phosphor provides improved luminance. An electroluminescent device consisting of the thin film phosphor on a substrate is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.