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:
Apr. 08, 2003
Filed:
Aug. 07, 2001
Applicant:
Inventors:
Eitaro Nishigaki, Tokyo, JP;
Shingo Kawashima, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/30 ;
U.S. Cl.
CPC ...
G09G 3/30 ;
Abstract
A pulse generator creates a pulse in synchronization with a driving pulse A charging circuit charges EL elements only for a period which is determined by an output from the pulse generator The charging time is determined by resistance of a switching element in its on condition and a junction capacity of the EL elements