Patents Assigned to Kent State Universtiy
  • Patent number: 5321533
    Abstract: Disclosed is a class of light modulating materials comprising microdomains of ferroelectric smectic liquid crystal dispersed in a light-transmissive polymer medium. The microdomains are formed by phase separation of the liquid crystal from solution with the polymer as the polymer is solidified. The switching of the liquid crystal may be either monostable or multistable (e.g., bistable), depending on the liquid crystal and polymer. The material modulates light in either a scattering-transmissive mode or a birefringence mode. Materials operating in the scattering-transmissive mode do not require polarizers. Advantages of the materials include switching times down to the order of microseconds or less, multistable optical states, wide viewing angles and high contrast.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: June 14, 1994
    Assignee: Kent State Universtiy
    Inventor: Satyendra Kumar