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:
Jan. 05, 1999
Filed:
Jul. 16, 1996
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 97 ; 345 89 ;
Abstract
A method for driving a surface-stabilized ferroelectric liquid crystal display element uses a selection voltage, a half-selection voltage, and a non-selection voltage. A relative ratio between the selection voltage, half-selection voltage, and non-selection voltage of a drive signal is changed, or absolute levels of the selection voltage, half-selection voltage, and non-selection voltage are changed. Consequently, a plurality of gradations of the surface-stabilized ferroelectric liquid crystal display element can be obtained.