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:
Dec. 02, 1997
Filed:
Dec. 02, 1994
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 90 ; 345 98 ; 345100 ;
Abstract
A liquid crystal device of active matrix type includes a layer of a liquid crystal material and a plurality of unit cells each provided with an active element. The device further includes signal lines for supplying signals for determining an optical state of the liquid crystal material, and a circuit for maintaining the signal lines at a certain reference potential during a period other than a period in which signals are supplied to the unit cells.