Patents by Inventor Koukichi Ito

Koukichi Ito 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).

  • Patent number: 4792211
    Abstract: A ferroelectric liquid crystal electro-optical device utilizes a liquid crystal layer composed of ferroelectric liquid crystal molecules. A first alignment layer is disposed in contact with the liquid crystal layer and has a uniaxial alignment characteristic effective to align the molecular axes of liquid crystal molecules immediately adjacent to the first alignment layer in a predetermined direction parallel to the liquid crystal layer. A second adjacent layer is opposed to the first alignment layer in contact with the liquid crystal layer. The second alignment layer has a random homogeneous alignment characteristic and a water repellency characteristic defined in terms of a water contact angle of more than 70.degree. jointly effective to align the molecular axes of liquid crystal molecules immediately adjacent to the second alignment layer in either of two orientation directions oppositely inclined relative to the predetermined direction in parallel to the liquid crystal layer.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: December 20, 1988
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Takamasa Harada, Masaaki Taguchi, Sadashi Shimoda, Koukichi Ito