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. 24, 1998
Filed:
Apr. 04, 1996
Applicant:
Inventors:
Gunter Baur, Freiburg, DE;
Waltraud Fehrenbach, Munchen, DE;
Barbara W Ne Staudacher, Ettenheim, DE;
Friedrich Windscheid, Freiburg-Tiengen, DE;
Rudolf Kiefer, Vorstetten, DE;
Assignee:
Merck Patent Gesellschaft Mit Beschrankter Haftung, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; G02F / ;
U.S. Cl.
CPC ...
349141 ; 349 33 ; 349179 ; 349136 ;
Abstract
An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including pretilt angle .alpha..sub.0, orientation angle .beta..sub.0, etc. of the liquid crystal molecules in the layer. Reflection mode devices are described.