Plasma display device with green emitting phosphor that becomes positively charged
US7268492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Feb 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2211/42
- 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. The green color phosphor used is a combination of any of phosphors defined by the general formula of MMg1-xAl11O19:Mnx (where “M” denotes one of La and Ce) having a magnetoplumbite crystal structure, yttrium borate group and yttrium aluminate group phosphors defined by the general formulae of (Y1-a-yGda) BO3:Tby, (Y1-a-yGda) (Ga1-xAlx)3(BO3)4:Tby, (Y1-a-yGda) (Ga1-xAlx)3(BO3)4:Cey, Tby, (Y1-y)3(Ga1-xAlx)5O12:Tby and La Mg1-xAl11O19:Cex, Tbx.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.