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:
Oct. 21, 1997
Filed:
Aug. 31, 1994
Yoshiaki Akama, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A device for emitting electrons, comprising a substrate, an insulating film formed on a surface of the substrate and having a recess, an emitter electrode formed on the insulating film and having an edge portion located at the recess, the edge portion of the emitter electrode being formed in the form of an arch within a plane perpendicular to the surface of the substrate so as to be sharpened toward a distal end of the emitter electrode, the edge portion of the emitter electrode being sharpened also in a planar direction parallel to the surface of the substrate toward the distal end of the emitter electrode so as to have a linear portion at the distal end, and the edge portion of the emitter electrode being adapted to emit electrons from the linear portion when an electric field is applied to the edge portion of the emitter electrode, and a gate electrode formed on the insulating structure and having an edge portion located at the recess and opposing the edge portion of the emitter electrode via a gap, the edge portion of the gate electrode being adapted to apply an electric field to the linear portion of the emitter electrode via the gap when a potential difference is given between the gate electrode and the emitter electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile