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:
Nov. 09, 2004
Filed:
Feb. 12, 2002
Hiroshi Kajiyama, Kodaira, JP;
Akira Katou, Mito, JP;
Kenichi Onisawa, Hitachinaka, JP;
Tetsuro Minemura, Hitachiota, JP;
Kazuo Uetani, Nishinomiya, JP;
Yasushi Ihara, Takarazuka, JP;
Shiro Takigawa, Kyoto, JP;
Kouichi Nose, Osaka, JP;
Isao Tokomoto, Ikeda, JP;
Yasuhiro Koizumi, Nishinomiya, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is provided a plasma display panel (PDP), consisting of a front panel ( ) equipped with display electrodes ( ) and a rear panel ( ) equipped with address electrodes ( ), that displays an image by causing discharge in a small discharge space formed between the two panels; wherein there are provided two layers of protective films ( ), made of metallic oxide, covering the dielectric layer ( ) installed on the front panel ( ); the outer, upper layer ( ) being formed into a layer of material with a specific surface area of 20 m /g or more and a film thickness of 1 &mgr;m or less, exhibiting a high discharge characteristic; and the inner, lower layer ( ) being formed into a layer of material with a specific surface area of 10 m /g or less and a film thickness of 1 &mgr;m or more, exhibiting a low water-adsorption characteristic.