Patents by Inventor Dal bong Seo

Dal bong Seo 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).

  • Alignment material for liquid crystal display device of vertical alignment mode and method of preparing the same
    Patent number: 8299304
    Abstract: This invention provides alignment materials for liquid crystal display device of vertical alignment mode and methods for the preparation of the same, and more particularly, it provides diaminobenzene derivatives represented by the following formula 1 (shown in description), capable of aligning liquid crystal in uniform and vertical way and remarkably improving clarity and solubility against organic solvents, methods for the preparation of the same and liquid crystal alignment films using the same.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: October 30, 2012
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jin wook Choi, Dal bong Seo, Jae cheol Park, Yong bae Kim
  • ALIGNMENT MATERIAL FOR LIQUID CRYSTAL DISPLAY DEVICE OF VERTICAL ALIGNMENT MODE AND METHOD OF PREPARING THE SAME
    Publication number: 20110105698
    Abstract: This invention provides alignment materials for liquid crystal display device of vertical alignment mode and methods for the preparation of the same, and more particularly, it provides diaminobenzene derivatives represented by the following formula 1 (shown in description), capable of aligning liquid crystal in uniform and vertical way and remarkably improving clarity and solubility against organic solvents, methods for the preparation of the same and liquid crystal alignment films using the same.
    Type: Application
    Filed: February 9, 2007
    Publication date: May 5, 2011
    Applicant: DONGJIN SEMICHEM Co., Ltd.
    Inventors: Jin wook Choi, Dal bong Seo, Jae cheol Park, Yong bae Kim