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. 18, 2003
Filed:
Oct. 02, 2002
Applicant:
Inventors:
Sung-Yool Choi, Taejon, KR;
Mun-Cheol Paek, Taejon, KR;
Kyoung-Ik Cho, Taejon, KR;
Jeen Hur, Taejon, KR;
Gi-Pyung Han, Taejon, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 9/04 ; H01J 9/12 ;
U.S. Cl.
CPC ...
H01J 9/04 ; H01J 9/12 ;
Abstract
A triode-type field emission device includes an insulating substrate; a cathode formed on the insulating substrate; a field emitter aligned on the cathode, wherein the field emitter includes a plurality of emitter tips and each emitter tip has the diameter of nanometers; an insulating layer positioned around the field emitter for electrically isolating the field emitter; and a gate electrode formed on the insulating layer, wherein the gate electrode is closed to an upper portion of the field emitter. Therefore, the triode-type field emission device may be operable in a low voltage.