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:
Mar. 24, 1998
Filed:
Oct. 13, 1993
Applicant:
Inventors:
Tsutomu Furuhashi, Yokohama, JP;
Makiko Ikeda, Yokohama, JP;
Naruhiko Kasai, Fujisawa, JP;
Toshio Futami, Mobara, JP;
Tetsuya Suzuki, Fujisawa, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Video & Information Systems, Inc., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 96 ; 345 87 ; 345 94 ; 345 98 ;
Abstract
A method for driving a liquid crystal (LCD) display apparatus. The LCD display apparatus includes a liquid crystal panel arranged by a plurality of pixel units formed in a matrix shape, and a signal drive circuit for generating a liquid crystal apply voltage and constructed of at least two integrated circuits. A DC common electrode voltage is applied to one electrode of liquid crystal of the pixel units within the liquid crystal panel, and an AC voltage is applied to the liquid crystal to be driven.