Phosphor and method for producing same
US5858278A · kind A · utility
65Cited by
4References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 20, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/62
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor capable of being kept from being affected by oxygen during production thereof, carrying out luminescence due to excitation by electrons, selectively realizing various luminous colors depending on selection of starting materials and exhibiting satisfactory luminance and life characteristics. The phosphor is represented by a chemical formula Ga.sub.1-x In.sub.x N:A (0.ltoreq.x<0.8, A.dbd.Zn or Mg) and prepared by mixing starting materials containing at least an oxygen-free gallium compound and an oxygen-free doping substance to prepare a mixture and heating the mixture in a nitrogen-containing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.