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:
May. 12, 2009
Filed:
Sep. 26, 2003
Masaki Aoki, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Hiroshi Setoguchi, Osaka, JP;
Junichi Hibino, Osaka, JP;
Yoshinori Tanaka, Osaka, JP;
Masaki Aoki, Osaka, JP;
Hiroyuki Kawamura, Osaka, JP;
Kazuhiko Sugimoto, Kyoto, JP;
Hiroshi Setoguchi, Osaka, JP;
Junichi Hibino, Osaka, JP;
Yoshinori Tanaka, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Phosphor layers (G,B, andR) are made of a combination of: blue and green phosphors that are positively charged on their surfaces and baked in an oxygen-nitrogen atmosphere to reduce oxygen vacancy, and that have a β-alumina crystal structure; and a red phosphor made of an yttrium oxide compound. Uniformly forming such phosphor layers on the wall surfaces of barrier ribs () provides equal charge characteristics of the phosphors of respective colors, reduces oxygen vacancy in the phosphors, and inhibits adsorption of various gases in the panel production process. This can stabilize the discharge characteristics and prevent luminance degradation at driving the panel.