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:
Nov. 05, 2002
Filed:
Mar. 02, 2000
Applicant:
Inventors:
Pierre Legagneux, Voisins le Bretonneux, FR;
Didier Pribat, Sevres, FR;
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/912 ; H01J 1/05 ;
U.S. Cl.
CPC ...
H01L 2/912 ; H01J 1/05 ;
Abstract
A field-emission device includes at least one plane cathode made of conductive material with a low electron affinity located on a face of a substrate carrying a layer of a dielectric material, which layer has at least one cavity in which the cathode is located. A gate made of conductive material is located on the dielectric layer and has an aperture centered with respect to the cavity. The conductive material with a low electron affinity is a material deposited in amorphous form. Such a device may find particular application to electron guns or display devices.