The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
May. 15, 2003
Masaki Aoki, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Mitsuhiro Otani, Osaka, JP;
Junichi Hibino, Osaka, JP;
Masaki Aoki, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Mitsuhiro Otani, Osaka, JP;
Junichi Hibino, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A plasma display device exhibits suppressed luminance degradation of a phosphor, a suppressed change in chromaticity and improved discharge characteristics as a result of suppression of adsorption of water or hydrocarbon-containing gas on a surface of a blue phosphor. A blue phosphor layer used in the plasma display device is formed of a compound expressed by BaMgAlO:Euor BaSrMgAlO:Euand includes at least one element that is selected from Nb, Ta, Pr, P, As, Sb, Bi and Tm which substitutes for a part of its Al or Mg element.