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:
Aug. 26, 2003
Filed:
Jan. 12, 2001
Applicant:
Inventors:
Yukio Ogawa, Mobara, JP;
Kazuyoshi Ishikawa, Mobara, JP;
Katsutoshi Kougo, Mobara, JP;
Yoshikazu Iidaka, Mobara, JP;
Hiroaki Kawasaki, Mobara, JP;
Assignee:
Futaba Denshi Kogyo Kabushiki Kaisha, Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ; H01J 1/46 ; H01J 2/110 ;
U.S. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ; H01J 1/46 ; H01J 2/110 ;
Abstract
A simple and slim double-faced vacuum fluorescent display device has no grid, thereby lowing the power consumption and fabrication cost thereof. Anode electrodes on one of the front plate and the back plate function as grids for anode electrodes on the other one of the front plate and the back plate. The light emitted from anode electrodes is not blocked by grids, thereby enhancing light emitting efficiency thereof.