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:
Feb. 26, 1991
Filed:
Jul. 07, 1989
Tomiaki Yamamoto, Chigasaki, JP;
Akio Murayama, Kamakura, JP;
Susmu Kondo, Yokosuka, JP;
Hitoshi Hato, Yokohama, JP;
Shinichi Kamagami, Yokohama, JP;
Shoichi Matsumoto, Yokohama, JP;
Kabushiki Kaisha Toshiba, Asaki, JP;
Abstract
The present invention discloses a liquid crystal display device including a liquid crystal cell, the liquid crystal cell including two substrates which are arranged substantially parallel to each other and have electrodes on opposing surfaces thereof, and a liquid crystal composition held between the substrates such that the liquid crystal molecules are arranged in a twisted mode, first and second polarizers arranged at both sides of the liquid crystal cell, and first and second optical delay plates arranged between the liquid crystal cell and the second polarizer, wherein assuming that a retardation value of the liquid crystal cell is given by: