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:
Jan. 09, 2007
Filed:
May. 15, 2003
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Masaki Aoki, Osaka, JP;
Mitsuhiro Otani, Osaka, JP;
Hiroshi Setoguchi, Osaka, JP;
Junichi Hibino, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Masaki Aoki, Osaka, JP;
Mitsuhiro Otani, Osaka, JP;
Hiroshi Setoguchi, Osaka, JP;
Junichi Hibino, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A plasma display device includes a blue phosphor composed of a compound represented by MeMgSiO:Eu (where, Me is at least calcium (Ca), strontium (Sr), or barium (Ba)). Concentration of bivalent Eu ions is 45 to 95% and concentration of trivalent Eu ions is 5 to 55%, of the europium (Eu) atoms contained in the blue phosphor layer. The plasma display device has less luminance degradation in a panel manufacturing process, high luminance, and long lifetime.