Process for producing phosphor and plasma display panel unit
US7176627B2 · kind B2 · utility
1Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Feb 19, 2004 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jun 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2211/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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 oxygen plasma 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.