Patents by Inventor Eung jae Park

Eung jae Park 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: 8318969
    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: wherein n is an integer of 1 to 5 and R is an alkyl or alkoxy group of 3 to 5 carbon atoms, which align liquid crystal in uniform and vertical way, have not only excellent mechanical properties such as heat resistance and surface strength but also high pretilt angles of liquid crystal and in particular, can make response rate of liquid crystal fast, methods for the preparation of the same and liquid crystal alignment films using the same.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: November 27, 2012
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jin wook Choi, Eung jae Park, 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: 20090041955
    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: wherein n is an integer of 1 to 5 and R is an alkyl or alkoxy group of 3 to 5 carbon atoms, which align liquid crystal in uniform and vertical way, have not only excellent mechanical properties such as heat resistance and surface strength but also high pretilt angles of liquid crystal and in particular, can make response rate of liquid crystal fast, methods for the preparation of the same and liquid crystal alignment films using the same.
    Type: Application
    Filed: February 9, 2007
    Publication date: February 12, 2009
    Applicant: Dongjin Semichem Co., Ltd.
    Inventors: Jin wook Choi, Eung jae Park, Jae cheol Park, Yong bae Kim