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:
Oct. 28, 1997
Filed:
Feb. 17, 1995
Yuzo Hisatake, Kanagawa-ken, JP;
Takeshi Yamamoto, Kanagawa-ken, JP;
Hoko Hirai, Kanagawa-ken, JP;
Hitoshi Hatoh, Kanagawa-ken, JP;
Yoshihiro Kinoshita, Saitama-ken, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
In a liquid crystal display device in which a twisted nematic liquid crystal layer of positive dielectric anisotropy is sandwiched between two substrates fitted with electrodes and liquid crystal molecule orientation films, and in which the angle of intersection of the liquid crystal molecular alignment directions on the surfaces of the two substrates is .theta. (0.degree.<.theta.<90.degree.) and the cell twist angle is .phi. which is determined to give a uniform twist alignment to the liquid crystal layer by the tilt orientation on the two substrates, the liquid crystal molecule orientation films have a twist angle .omega. which is +.theta.+180.degree. or +.theta.-180.degree. when .phi. is +.theta., and which is -.theta.+180.degree. or -.theta.-180.degree. when .phi. is -.theta., in the state when a voltage applied to the liquid crystal layer is less than a threshold voltage.