Patents by Inventor Yeon-Hwa Lee

Yeon-Hwa Lee 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).

  • Publication number: 20120248465
    Abstract: An organic light emitting diode display capable of reducing the shortening of image stacking lifetime caused by the residue of the barrier ribs produced during the forming of the barrier ribs is provided. The display includes: a substrate; a first pixel electrode formed on the substrate; barrier ribs formed on the substrate, and having an opening exposing the first pixel electrode; a second pixel electrode formed on the first pixel electrode; an organic light emitting member formed on the second pixel electrode; an organic light emitting member formed on the second pixel electrode; a common electrode formed on the organic light emitting member; and a thin film encapsulation member covering the common electrode. The width of the second pixel electrode is greater than the exposure width of the first pixel electrode exposed through the opening of the barrier ribs.
    Type: Application
    Filed: July 11, 2011
    Publication date: October 4, 2012
    Inventors: Jin-Baek Choi, Ji-Young Choung, Joon-Gu Lee, Se-Jin Cho, Won-Jong Kim, Hee-Joo Ko, Yeon-Hwa Lee, Young-Woo Song, Jong-Hyuk Lee
  • Publication number: 20120235144
    Abstract: An organic light emitting diode device includes a substrate, a thin film transistor on the substrate, a first pixel electrode electrically connected to the thin film transistor, a pixel defining layer on the first pixel electrode and partitioning a light emitting region, a second pixel electrode contacting the first pixel electrode at the light emitting region, a light emitting layer contacting the second pixel electrode at the light emitting region, and a common electrode on the light emitting layer; and a method of manufacturing the same is provided.
    Type: Application
    Filed: August 10, 2011
    Publication date: September 20, 2012
    Inventors: Ji-Young Choung, Jin-Baek Choi, Joon-Gu Lee, Se-Jin Cho, Hee-Joo Ko, Yeon-Hwa Lee, Won-Jong Kim, Young-Woo Song, Jong-Hyuk Lee
  • Publication number: 20120181544
    Abstract: An organic light-emitting display device includes a substrate; a thin-film transistor on the substrate; a first insulating layer covering the thin-film transistor; a first electrode on the first insulating layer, and electrically connected to the thin-film transistor; a second insulating layer on the first insulating layer so as to cover the first electrode, and having an opening for exposing a part of the first electrode; a porous member in the second insulating layer; a second electrode on the second insulating layer, and facing the first electrode so as to correspond to the opening; and an organic emission layer between the first electrode and the second electrode so as to correspond to the opening. The organic light-emitting display device may prevent degradation of characteristics of an organic light-emitting device due to discharge of gas from an organic material.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 19, 2012
    Inventors: Yeon-Hwa Lee, Won-Jong Kim, Ji-Young Choung, Joon-Gu Lee, Darby Choi, Young-Woo Song, Jong-Hyuk Lee