Phosphor and fluorescent display device
US5619098A · kind A · utility
28Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7746
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor is disclosed which is suitable for use for a fluorescent display device and driven at a driving voltage as low as 1 kV or less and free of S and Cd. Compounds of Ti, alkaline earth metal and an element of Group 13 of the periodic table in predetermined amounts are heated at 1100.degree. to 1400.degree. C. for calcination, resulting in a solid solution of the rare earth element and one element of Group 13 being formed in a phosphor matrix made of an oxide of alkaline earth metal and Ti. An example of the phosphor is SrTiO.sub.3 :Pr,Al exhibiting a red luminous color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.