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:
Feb. 15, 2005
Filed:
Jul. 02, 2001
Mitsuyoshi Nihei, Mobara, JP;
Yuji Nomura, Mobara, JP;
Yusuke Yasuoka, Mobara, JP;
Toshinori Suzuki, Mobara, JP;
Junichiro Kogure, Mobara, JP;
Tadashi Mizohata, Mobara, JP;
Mitsuyoshi Nihei, Mobara, JP;
Yuji Nomura, Mobara, JP;
Yusuke Yasuoka, Mobara, JP;
Toshinori Suzuki, Mobara, JP;
Junichiro Kogure, Mobara, JP;
Tadashi Mizohata, Mobara, JP;
Futaba Corporation, Mobara, JP;
Abstract
A fluorescent display device having a pseudo half mirror formed on a rear surface a face plate thereof and exhibiting a function like a neutral density filter. The face plate is formed on a whole rear surface thereof with an aluminum film including opening portions, non-opening portions and a solid portion. The opening and non-opening portions cooperate with each other to constitute a pseudo half mirror. The pseudo half mirror has light transmittance determined depending on a ratio in area between the opening portions and the non-opening portions. Thus, the light transmittance may be set as desired by varying the area ratio.