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:
Nov. 11, 2003
Filed:
May. 30, 2001
Applicant:
Inventors:
Yasushi Iwakabe, Ohamishirasato, JP;
Masuyuki Ohta, Mattou, JP;
Shigeru Matsuyama, Mobara, JP;
Hitoshi Oaku, Hitachi, JP;
Katsumi Kondo, Mido, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/958 ; C09K 1/954 ; G02F 1/1343 ;
U.S. Cl.
CPC ...
C09K 1/958 ; C09K 1/954 ; G02F 1/1343 ;
Abstract
An active matrix liquid crystal display device is provided, in which an after image remaining after removing an application of a direct current voltage is suppressed. The active matrix liquid crystal display device has a liquid crystal layer containing a liquid crystal molecule having negative dielectric anisotropy and a dopant having a dissociative group.