Patents by Inventor Oleg V. Yaroshchuk

Oleg V. Yaroshchuk 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).

  • Orientation film of photopolymer in a liquid crystal display and a method of forming the film
    Patent number: 5767994
    Abstract: A method for the formation of orientation film of a liquid crystal display. The method comprises the steps of forming polyvinyl-4-fluorocinnamate (hereinafter "PVCN-F") film on the surfaces of two opposite substrates and irradiating the two PVCN-F films formed with linearly polarized UV lights having different energy. The method in accordance with the present invention is capable of not only providing the pretilt angle to a fabricated LCD but also adjusting it by illuminating two substrates with linearly polarized UV beams having different energies from each other, respectively. In addition, the LCD fabricated by the method according to the present invention requires a much lower driving voltage, as compared with the conventional LCD having an orientation film of planar structure. Furthermore, phase distortion and light scattering phenomena do not occur in the LCD, so that display characteristics such as contrast and the like can be improved.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: June 16, 1998
    Assignee: Goldstar Co., Ltd.
    Inventors: Dae Sung Kang, Woo Sang Park, Hyun Ho Shin, Soon Bum Kwon, Tatyana Ya. Marusii, Yuriy A. Reznikov, Anatoliy I. Khizhnyak, Oleg V. Yaroshchuk
  • Liquid crystal device utilizing thermostable polymeric material
    Patent number: 5538823
    Abstract: A thermostable orientation material for liquid crystal alignment including a photopolymerized polyvinyl fluorocinnamate.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: July 23, 1996
    Assignees: Goldstar Co., Ltd., Institute of Physics
    Inventors: Woo S. Park, Hyun H. Shin, Soon B. Kwon, Andrey G. Dyadyusha, Tatyana Y. Marusii, Yuriy A. Reznikov, Anatoliy I. Khizhnyak, Oleg V. Yaroshchuk, Alexandr A. Kolomeytsev, Igor V. Gerus