Patents by Inventor Takasugi Shinji

Takasugi Shinji 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).

  • Organic light emitting diode display device
    Patent number: 8749598
    Abstract: Disclosed in an organic light emitting diode display device including: a driving element for controlling a driving current, a first TFT that switches a current path between the first node and the second node, a second TFT that switches a current path between a data line and a third node, a third TFT that switches a current path between the third node and a reference voltage input terminal, a fourth TFT that switches a current path between the second node and a fourth node, an organic light emitting diode connected between the fourth node and a ground voltage input terminal to emit a light by the driving current, a storage capacitor connected between the first node and the third node, and a variable capacitor connected between the first node and the first gate line and having a capacity changed when the first TFT is turned on and off.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: June 10, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hasumi Taro, Changheon Kang, Takasugi Shinji
  • ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE
    Publication number: 20120098877
    Abstract: Disclosed in an organic light emitting diode display device including: a driving element for controlling a driving current, a first TFT that switches a current path between the first node and the second node, a second TFT that switches a current path between a data line and a third node, a third TFT that switches a current path between the third node and a reference voltage input terminal, a fourth TFT that switches a current path between the second node and a fourth node, an organic light emitting diode connected between the fourth node and a ground voltage input terminal to emit a light by the driving current, a storage capacitor connected between the first node and the third node, and a variable capacitor connected between the first node and the first gate line and having a capacity changed when the first TFT is turned on and off.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 26, 2012
    Inventors: Hasumi Taro, Changheon Kang, Takasugi Shinji