Process for producing phosphor and plasma display panel unit
US7223987B2 · kind B2 · utility
2Cited by
1References
1Claims
0Family size
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Key dates
| Filing date | Feb 19, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Jul 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J11/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Fine particles of a phosphor are weighed, mixed, and filled. Provided after this step are at least one step of firing the particles in a reducing atmosphere, and a step of pulverizing, dispersing, rinsing, drying and then treating the particles in an ozone atmosphere after the last step of treatment in the reducing atmosphere. This method recovers oxygen vacancy in the host crystal of the phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.