Patents by Inventor Ji-Hwang LEE

Ji-Hwang 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).

  • Functional layer for organic light-emitting diode, organic light-emitting display apparatus including the same, and method of manufacturing the organic light-emitting diode
    Patent number: 9246120
    Abstract: An organic light-emitting diode includes a first electrode, an intermediate layer on the first electrode, and a second electrode on the intermediate layer. The intermediate layer includes an emission layer including an organic material, and a functional layer between the second electrode and the emission layer and including at least one of a metal compound and a semiconductor compound including at least one of an oxygen atom and a sulfur atom. An oxygen concentration in the functional layer increases toward the second electrode, and a sulfur concentration in the functional layer increases toward the emission layer.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 26, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hwang Lee, Eui-Gyu Kim, A-Rong Lee, Yool-Guk Kim, Seok-Soon Back
  • ORGANIC LIGHT-EMITTING DIODE, ORGANIC LIGHT-EMITTING DISPLAY APPARATUS INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE ORGANIC LIGHT-EMITTING DIODE
    Publication number: 20150021558
    Abstract: An organic light-emitting diode includes a first electrode, an intermediate layer on the first electrode, and a second electrode on the intermediate layer. The intermediate layer includes an emission layer including an organic material, and a functional layer between the second electrode and the emission layer and including at least one of a metal compound and a semiconductor compound including at least one of an oxygen atom and a sulfur atom. An oxygen concentration in the functional layer increases toward the second electrode, and a sulfur concentration in the functional layer increases toward the emission layer.
    Type: Application
    Filed: November 13, 2013
    Publication date: January 22, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Hwang Lee, Eui-Gyu Kim, A-Rong Lee, Yool-Guk Kim, Seok-Soon Back
  • ORGANIC SOLAR CELL AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20110297216
    Abstract: An organic solar cell includes an anode and a cathode facing each other, a photoactive layer disposed between the anode and the cathode and including an electron donor and an electron acceptor, and a transparent auxiliary layer disposed between the anode and the cathode and in contact with the photoactive layer. The transparent auxiliary layer includes inorganic nanoparticles and a polymer.
    Type: Application
    Filed: November 9, 2010
    Publication date: December 8, 2011
    Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo-Ghang IHN, Kil-Won CHO, Ji-Hwang LEE, Sae-Byeok JO