Patents Assigned to Ecsibeo PPF1 AB
  • Publication number: 20080043190
    Abstract: The invention relates to a liquid crystal device comprising a liquid crystal bulk layer and a dynamic surface-director alignment layer, wherein the liquid crystal bulk layer comprises a liquid crystalline material possessing a phase sequence consisting of isotropic phase, nematic phase and optionally crystalline phase(s), and the surface-director alignment layer comprises a chiral smectic liquid crystalline polysiloxane. The invention also relates to a method for its manufacturing.
    Type: Application
    Filed: June 8, 2005
    Publication date: February 21, 2008
    Applicant: ECSIBEO PPF1 AB
    Inventors: Bertil Helgee, Lachezar Komitov
  • Patent number: 7295272
    Abstract: The invention relates to a liquid crystal device, comprising a liquid crystal bulk layer and chiral dopants being inhomogeneously distributed in the bulk layer as a result of being permanently attached to at least one surface, termed chiral surface. The invention also relates to methods for manufacturing as well as methods for controlling liquid crystal devices.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: November 13, 2007
    Assignee: Ecsibeo PPF1 AB
    Inventors: Bertil Helgee, Latchezar Komitov