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:
Jun. 30, 1992
Filed:
Jul. 26, 1991
Shunichi Kishimoto, Kaizuka, JP;
Yasuo Funazo, Hirakata, JP;
Katsumi Terada, Kyoto, JP;
Goro Hamagishi, Toyonaka, JP;
Kazuhiko Takeuchi, Ikeda, JP;
Daisuke Takemori, Suita, JP;
Takashi Ikeda, Suita, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
A flat display includes a front panel having a fluorescent screen on its rear side, a rear panel defining a flat space with the front panel, linear filament cathodes arranged close to the rear panel, and an address electrode plate having a multiplicity of apertures and disposed close to the front panel. The rear panel is formed on its inner surface with spacer ridges each extending on each side of each filament cathode therealong and having a height to reach the address electrode plate. The spacer ridges give the flat display improved strength against pressure.