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:
Jun. 25, 2002
Filed:
Aug. 16, 1996
Atsuyuki Manabe, Kanagawa-ken, JP;
Masahito Ishikawa, Kanagawa-ken, JP;
Yasuharu Tanaka, Kanagawa-ken, JP;
Hitoshi Hatoh, Kanagawa-ken, JP;
Masumi Okamoto, Kanagawa-ken, JP;
Toshiba Techno Center Inc., Kawasaki, JP;
Abstract
In a liquid crystal display device having a driving liquid crystal cell interposed between two polarizers and , the cell having a liquid crystal layer held between two substrates and , the layer having a twisted molecular alignment when no voltage is applied, and the liquid crystal cell performing optical control, using the optical anisotropy of liquid crystal, there is provided with an optical anisotropic element between the polarizer and the driving liquid crystal cell, the optical anisotropic element comprising an optical anisotropic substance layer in which the optical rotatory power is minimal in the direction of layer thickness and the optical anisotropy is negative. The angle of the optical axis of the optical anisotropic element varies continuously or in stages in the direction of layer thickness of the optical anisotropic element as against the surface of the optical anisotropic element. Furthermore, optical anisotropic element with negative optical anisotropy can be combine to the anisotropically negative element.