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. 16, 1984
Filed:
Jun. 04, 1981
Applicant:
Inventors:
Kenneth A Arton, Harlow, GB;
George H Rokos, Bishops Stortford, GB;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340784 ; 340719 ; 340805 ; 340791 ; 350330 ;
Abstract
In a matrix array liquid crystal display on silicon with an a.c. drive involving periodic reversal of the potential of the counter-electrode this reversal is liable to produce a significant r.m.s. error voltage at each reversal. The OFF element error voltage is effectively eliminated by blanking all picture elements at the commencement of each reversal, and the ON error voltage more evenly shared by making this reversal occur after a non-integral number of frame scans.