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, 2012
Filed:
Jan. 13, 2010
Yusuke Fukui, Osaka, JP;
Masahiro Sakai, Kyoto, JP;
Mikihiko Nishitani, Nara, JP;
Yosuke Honda, Osaka, JP;
Michiko Okafuji, Osaka, JP;
Yasuhiro Yamauchi, Osaka, JP;
Yusuke Fukui, Osaka, JP;
Masahiro Sakai, Kyoto, JP;
Mikihiko Nishitani, Nara, JP;
Yosuke Honda, Osaka, JP;
Michiko Okafuji, Osaka, JP;
Yasuhiro Yamauchi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A first aim of the present invention is to provide a PDP capable of stably delivering favorable image display performance and being driven with low power, by improving the surface layer to improve secondary electron emission characteristics and charge retention characteristics. A second aim of the present invention is to provide a PDP, in addition to having the above-mentioned effects, capable of reducing an aging time. In order to achieve these aims, a crystalline film of a film thickness of approximately 1 μm is disposed as a surface layer (protective film)on a surface of the dielectric layerthat faces a discharge space. The surface layeris made by adding Sr to CeO, and a concentration of Sr in the surface layeris in a range of 11.8 mol % to 49.4 mol % inclusive. With this structure, an attempt is made to improve the secondary electron emission characteristics and aging characteristics in the surface layer