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:
Dec. 12, 2006
Filed:
Dec. 20, 2002
Kazuhiko Sugimoto, Kyoto, JP;
Mitsuhiro Otani, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Masaki Aoki, Osaka, JP;
Junichi Hibino, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Mitsuhiro Otani, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Masaki Aoki, Osaka, JP;
Junichi Hibino, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a plasma display device apt to increase luminance of a phosphor layer and prevent degradation of a discharge characteristic, and to a phosphor used for the device. This plasma display device has a green phosphor having a crystal structure of ZnSiO:Mn, and a monovalent oxide is substituted for part of the green phosphor. The monovalent oxide is one or more of lithium oxide (LiO), sodium oxide (NaO), potassium oxide (KO), cesium oxide (CsO), rubidium oxide (RbO), copper oxide (CuO), and silver oxide (AgO). This structure allows reduction of oxygen defects occurring in the green phosphor, suppression of the luminance decrease of the green phosphor, and improvement of a discharge characteristic.