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, 2015
Filed:
Nov. 04, 2011
Applicant:
Koji Kato, Mie, JP;
Inventor:
Koji Kato, Mie, JP;
Assignees:
NORITAKE ITRON CORPORATION, Mie, JP;
NORITAKE CO., LIMITED, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 (2006.01); H01J 63/04 (2006.01); C09K 11/77 (2006.01); H01J 31/15 (2006.01);
U.S. Cl.
CPC ...
C09K 11/7703 (2013.01); H01J 31/15 (2013.01); H01J 2329/20 (2013.01); H01J 2329/943 (2013.01); C09K 11/7789 (2013.01);
Abstract
A vacuum fluorescent display apparatus comprising a filament cathode () and an anode (); the filament cathode being arranged in a vacuum container, and used for releasing low-energy electrons; the anode having a phosphor () adhering thereto, and being struck by the low-energy electrons and thereby caused to emit light; wherein a structural body () is provided to a region in which the low-energy electrons released by the cathode can be controlled; the structural body having an electrically conductive or semi-conductive metal oxide formed at a portion that is bombarded by low-energy electrons.