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:
May. 22, 2007
Filed:
Apr. 14, 2006
Applicants:
Hirotaka Murata, Fukaya, JP;
Hiroaki Ibuki, Ageo, JP;
Takashi Nishimura, Fukaya, JP;
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/62 (2006.01); H01J 1/304 (2006.01);
U.S. Cl.
CPC ...
Abstract
A front substrate of an image display device has a phosphor screen and a metal back layer superposed on the phosphor screen. A plurality of electron emitting elements which emit electrons toward the phosphor screen are located on a rear substrate opposed to the front substrate. The metal back layer has a region which corresponds to the phosphor screen and is divided by gaps gin a first direction and gaps gin a second direction perpendicular to the first direction such that there are relations g<g, and ρg<ρg, where ρgand ρgare sheet resistances at the gaps gand g, respectively.