Patents by Inventor Dae Young Ahn

Dae Young Ahn 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).

  • Column driver for OLED display
    Patent number: 7068248
    Abstract: A single-chip column driver for organic light emitting diode (OLED) display is disclosed. Instead of using two column drivers for dual scan, the present invention uses one column driver driving both the upper and the lower OLED panels. The column driver has a two set of output circuitry: one for driving the upper panel and the other for driving the lower panel. The single chip solution of the present invention eliminates the problem of display uniformity without increasing the part count. The invention also enables independent control of RGB without further increasing the part count.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: June 27, 2006
    Assignee: Leadis Technology, Inc.
    Inventors: Sung Tae Ahn, Keunmyung Lee, Dae Young Ahn, Tae Kwang Park
  • Column driver for OLED display
    Publication number: 20030058203
    Abstract: A single-chip column driver for organic light emitting diode (OLED) display is disclosed. Instead of using two column drivers for dual scan, the present invention uses one column driver driving both the upper and the lower OLED panels. The column driver has a two set of output circuitry: one for driving the upper panel and the other for driving the lower panel. The single chip solution of the present invention eliminates the problem of display uniformity without increasing the part count. The invention also enables independent control of RGB without further increasing the part count.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 27, 2003
    Inventors: Sung Tae Ahn, Keunmyung Lee, Dae Young Ahn, Tae Kwang Park