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:
May. 10, 1994
Filed:
Apr. 22, 1993
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
Disclosed is a liquid crystal display device including a liquid crystal cell in which a twisted nematic liquid crystal is interposed between a pair of transparent electrodes disposed opposite to each other, a pair of polarizers, an optically compensating element having a maximum refractive index in a direction in the plane thereof, and a thin film having a maximum refractive index in the direction of the thickenss thereof, the optically compensating element and the thin film being interposed between the liquid crystal cell and the polarizer so as to substantially satisfy specific conditions. This liquid crystal display device offers an improved viewing angle and is advantageously used in a black and white liquid crystal display.