Patents by Inventor Michelle Giocondo

Michelle Giocondo 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).

  • Nematic liquid crystal display with surface bistability and control by flexoelectric effect
    Patent number: 5357358
    Abstract: A bistable liquid crystal optical device includes two transparent plates (12, 14) provided with control electrodes (18, 19), between which is placed a nematic liquid crystal material (20). The transparent plates (12, 14) are surface-treated so as to define two stable configurations of molecules of the liquid crystal material generating respectively two flexoelectrical polarizations having components which are normal to electrodes P.sub.z 1P.sub.z 2 having opposite directions. Devices (30) are provided for applying perpendicular electrical field pulses to the plates (12, 14), said pulses being directed selectively one way or the other.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: October 18, 1994
    Assignee: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Georges Durand, Riccardo Barberi, Michelle Giocondo, Philippe R. Martinot Lagarde