Patents by Inventor Michele Giocondo

Michele 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).

  • Bistable liquid crystal display device in which nematic liquid crystal has monostable anchorings
    Patent number: 6327017
    Abstract: A display device including two parallel transparent plates (10, 12) having transparent electrodes on the inner surfaces thereof and containing a liquid crystal material (20). The device includes means defining a monostable anchoring for each plate (10, 12), means (40) controllable to break at least one of the anchorings, and means for thereafter inducing volume bistability.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: December 4, 2001
    Assignee: Nemoptic S.A.
    Inventors: Ricardo Barberi, Ivan Dozov, Georges Durand, Philippe Martinot-Lagarde, Maurizio Nobili, Eric Polossat, Ioannis Lelidis, Michele Giocondo
  • BISTABLE LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20010012080
    Abstract: A display device including two parallel transparent plates (10, 12) having transparent electrodes on the inner surfaces thereof and containing a liquid crystal material (20). The device includes means defining a monostable anchoring for each plate (10, 12), means (40) controllable to break at least one of the anchorings, and means for thereafter inducing volume bistability.
    Type: Application
    Filed: September 14, 1998
    Publication date: August 9, 2001
    Inventors: RICARDO BARBERI, IVAN DOZOV, GEORGES DURAND, PHILIPPE MARTINOT-LAGARDE, MAURIZIO NOBILI, ERIC POLOSSAT, IOANNIS LELIDIS, MICHELE GIOCONDO
  • Bistable display device based on nematic liquid crystals allowing grey tones
    Patent number: 5995173
    Abstract: The present invention relates to a display device based on liquid crystals, comprising a nematic liquid-crystal material (10) with positive dielectric anisotropy sandwiched between two transparent confinement plates (20, 30) each provided with transparent electrodes (22, 32), characterized in that at least one of the plates, (30), defines a quasi-bistable anchoring and in that it is provided with main electrical supply means (40) suitable for applying a temporary electric field to the liquid-crystal material (10) capable of breaking the anchoring on the aforementioned plate (30) and subsequently allowing, due to the effect of hydrodynamic instabilities, various localized orientations of the liquid-crystal molecules (10) corresponding to the preferred orientations of the quasi-bistable anchoring.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: November 30, 1999
    Assignee: Instituto Nationale per La Fisica Della Materia
    Inventors: Riccardo Barberi, Roberto Bartolino, Ivan Dozov, Georges Durand, Michele Giocondo, Jun Li