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. 23, 2003
Filed:
Aug. 30, 2000
Hitoshi Oaku, Hitachi, JP;
Hiroyuki Kagawa, Hitachi, JP;
Kotaro Araya, Hitachiota, JP;
Katsumi Kondo, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an active matrix type liquid crystal display device using a liquid crystal of negative dielectric anisotropy, low voltage driving and high quality display are made compatible. A liquid crystal display device has: a pair of substrates ; a liquid crystal layer ; a common electrode , a pixel electrode , a signal electrode , and an active element arranged on the substrate so that an electric field parallel to the plane of the substrate is generated by applying a voltage; alignment film formed on the substrate ; and a polarizer ; wherein the liquid crystal of negative dielectric anisotropy containing liquid crystal molecule having dicyanobenzene structure in its molecule structure is used. Within the allowable range, in which the display quality of images of the liquid crystal display device is not lowered, the voltage holding rate is maintained, and low voltage driving becomes possible.