Patents by Inventor Oh-Keun Song

Oh-Keun Song 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 having organic layers of varying thickness
    Patent number: 8040055
    Abstract: An organic light emitting diode (OLED) display device for displaying a white color using a first color and a second color that are complementary to each other. The OLED display device includes a substrate, a lower electrode on the substrate in a first direction, a first organic layer on a first region of the lower electrode and having a first EML for displaying a first color, a second organic layer on a second region of the lower electrode and having a second EML for displaying a second color that is complementary to the first color, and an upper electrode disposed on the first and second organic layers in a second direction crossing the first direction, wherein the first organic layer has a different thickness from the second organic layer. In addition, a thin film transistor (TFT) may disposed between the substrate and the lower electrode.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: October 18, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Mo Koo, Oh-Keun Song, Hye-In Jeong, Hyuk-Sang Jun, Tae-Shick Kim, Seon-Hee Kim