Patents by Inventor Barbara Weber nee Staudacher

Barbara Weber nee Staudacher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Liquid crystal switching elements having a parallel electric field and .beta..sub.o which is not 0.degree. or 90.degree.
    Patent number: 5576867
    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 orientation angle .beta..sub.o and pretilt angle .alpha..sub.o of the liquid crystal molecules in the layer. For example, good results are achieved when 0.degree.<.beta..sub.o .ltoreq.20.degree. for liquid crystal molecules having negative dielectric anisotropy and 70.degree..ltoreq..beta..sub.o <90.degree. for molecules having positive dielectric anisotropy. Preferably, 0.degree..ltoreq..alpha..sub.o <30.degree..
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 19, 1996
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Gunter Baur, Waltraud Fehrenbach, Barbara Weber nee Staudacher, Friedrich Windscheid, Rudolf Kiefer