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. 18, 2004
Filed:
Dec. 21, 2000
Applicant:
Inventors:
Ichiro Saito, Kanagawa, JP;
Kouji Inoue, Kanagawa, JP;
Shinichi Tachizono, Chiba, JP;
Takeshi Yamagishi, Chiba, JP;
Assignee:
Sony Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/30 ;
U.S. Cl.
CPC ...
H01J 1/30 ;
Abstract
The present invention is intended to efficiently concentrate an electric field and to improve electron emission efficiency in a field emission cathode constituting a flat display device. A field emission cathode constituting a flat display device is constituted to have an electron emission section arranged to face an electron applied surface. At least the electron emission section is formed out of conductive, thin plate-like fine particles. A substance having a work function of 2 to 3 eV is bonded on the surfaces of the thin plate-like fine particles.