Plasma display device
US7576487B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | May 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J11/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A plasma display device provided with a green color phosphor which is charged entirely with a positive potential, adsorbs only limited amounts of water, carbon monoxide, carbon dioxide and hydrocarbon, and not liable to cause chemical reaction thereto. A green color phosphor layer is formed of the green phosphor comprising at least one compound selected from among materials defined by the general formulae of M1-a (Ga1-xAlx)2 O4:Mna (where “M” denotes one of Zn, Mg, Ca and Sr), (Y1-a-yGda) (Ga1-xAlx)3 (BO3)4:Tby, (Y1-a-yGda) (Ga1-xAlx)3 (BO3)4:Cey, Tby, (Y1-a-yGda) BO3:Tby and (Y1-a-yGda)3 (Ga1-xAlx)5 O12:Tby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.