Patents by Inventor Duk Gyu Jang

Duk Gyu Jang 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).

  • Plasma display apparatus with black matrices
    Patent number: 8232726
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus comprises an upper substrate, a first electrode and a second electrode formed on the upper substrate, a lower substrate disposed to face the upper substrate, and a third electrode and a barrier rib formed in the lower substrate. First and second black matrices are formed in the upper substrate and are separated from each other on a same straight line. According to the present invention, while maintaining the function of improving a contrast ratio and reflectance of a black matrix, a short and a spotted pattern that may occur when simultaneous exposure is performed can be reduced, and so the picture quality, the cost of production, and efficiency can be improved.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: July 31, 2012
    Assignee: LG Electronics Inc.
    Inventors: Kyeong Cheol Seo, Duk Gyu Jang, Jeong Sik Choi, Tae Hwa Hwang
  • PLASMA DISPLAY APPARATUS
    Publication number: 20110210662
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus comprises an upper substrate, a first electrode and a second electrode formed on the upper substrate, a lower substrate disposed to face the upper substrate, and a third electrode and a barrier rib formed in the lower substrate. First and second black matrices are formed in the upper substrate and are separated from each other on a same straight line. According to the present invention, while maintaining the function of improving a contrast ratio and reflectance of a black matrix, a short and a spotted pattern that may occur when simultaneous exposure is performed can be reduced, and so the picture quality, the cost of production, and efficiency can be improved.
    Type: Application
    Filed: February 12, 2009
    Publication date: September 1, 2011
    Applicant: LG ELECTRONICS INC.
    Inventors: Kyeong Cheol Seo, Duk Gyu Jang, Jeong Sik Choi, Tae Hwa Hwang