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. 12, 2002
Filed:
Oct. 11, 2000
Applicant:
Inventor:
Kazuo Konuma, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/28 ;
U.S. Cl.
CPC ...
G09G 3/28 ;
Abstract
A method for driving an electric-field electron emission apparatus without degrading the electron emission characteristics is provided. The method can drive the electric-field electron emission apparatus without degrading the electron emission characteristics by allowing application of the electric field only when the second derivative of the captured electron current density exceeds a certain value.