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:
Sep. 27, 1988
Filed:
Feb. 12, 1987
Applicant:
Inventor:
Jun Nakanowatari, Miyagi, JP;
Assignee:
Alps Electric Co., Ltd, , JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G09G / ;
U.S. Cl.
CPC ...
3503 / ; 350332 ; 350333 ; 350336 ; 340784 ;
Abstract
In a liquid crystal display apparatus employing a ferroelectric liquid crystal cell, two or more pulse voltages are applied to the liquid crystal cell during selected time periods within 1 frame period to drive the liquid crystal cell. These pulse voltages can maintain the display condition of the liquid crystal cell.