Patents by Inventor Yoo Jin Chol

Yoo Jin Chol 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).

  • Method for controlling pretilt angle direction in a liquid crystal cell
    Patent number: 6879363
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: April 12, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Chol, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Publication number: 20030117555
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Application
    Filed: July 22, 2002
    Publication date: June 26, 2003
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Chol, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon