Patents by Inventor Won Dong

Won Dong 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).

  • Diamine compound having dendron side chain and liquid crystal aligning agent using same
    Publication number: 20060149029
    Abstract: Disclosed herein is a novel functional diamine compound having a dendron structure, polyamic acid which is produced using functional diamine, aromatic cyclic diamine, aliphatic cyclic acid dianhydride, and aromatic cyclic acid dianhydride, polyimide which is produced by imidizing polyamic acid, and an LC alignment film produced using polyimide. Even if the diamine compound is used in a small amount, it is possible to realize a high pretilt angle, thus the pretilt angle is easily controlled. Therefore, it can be used to produce an LC alignment film using a twisted nematic (TN) mode, in which the pretilt angle of liquid crystal is low, and a vertically aligned (VA) mode, which requires a high pretilt angle of about 90°.
    Type: Application
    Filed: September 6, 2005
    Publication date: July 6, 2006
    Inventors: Jae Oh, Moo Lee, Bum Lee, O Kwon, Won Dong, Yusuke Tsuda