Patents by Inventor Sam-Il KOH

Sam-Il KOH 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 device
    Patent number: 9865828
    Abstract: An organic light-emitting device is disclosed, the organic light-emitting device comprising a first electrode, a second electrode disposed opposite to the first electrode, and an emission layer comprising organic materials and disposed between the two electrodes. The emission layer may include a host and a dopant. The host may be a silane derivative of anthracene having at least one silicon substituent that is an aryl group having at least two rings that are fused to each other. The dopant may be a 7H-benzo[c]fluorene having diarylamino substituents at the 5- and 9-positions. This scheme provides organic light-emitting devices having low driving voltages, high light-emitting efficiencies and long lifetimes.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: January 9, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hun Kim, Mie-Hwa Park, Sam-Il Koh, Mi-Kyung Kim, Kwan-Hee Lee, Yun-Hi Kim
  • Cascade-type compound and organic light-emitting device including the same
    Patent number: 9412957
    Abstract: A cascade-type compound and an organic light-emitting device (OLED) including the same are provided.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: August 9, 2016
    Assignees: Samsung Display Co., Ltd., INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
    Inventors: Se-Hun Kim, Mie-Hwa Park, Sam-Il Koh, Mi-Kyung Kim, Kwan-Hee Lee, Yun-Hi Kim
  • ORGANIC LIGHT EMITTING DEVICE
    Publication number: 20140054559
    Abstract: An organic light-emitting device is disclosed, the organic light-emitting device comprising a first electrode, a second electrode disposed opposite to the first electrode, and an emission layer comprising organic materials and disposed between the two electrodes. The emission layer may include a host and a dopant. The host may be a silane derivative of anthracene having at least one silicon substituent that is an aryl group having at least two rings that are fused to each other. The dopant may be a 7H-benzo[c]fluorene having diarylamino substituents at the 5- and 9-positions. This scheme provides organic light-emitting devices having low driving voltages, high light-emitting efficiencies and long lifetimes.
    Type: Application
    Filed: January 22, 2013
    Publication date: February 27, 2014
    Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY, SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Hun Kim, Mie-Hwa Park, Sam-Il Koh, Mi-Kyung Kim, Kwan-Hee Lee, Yun-Hi Kim
  • CASCADE-TYPE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20140054558
    Abstract: A cascade-type compound and an organic light-emitting device (OLED) including the same are provided.
    Type: Application
    Filed: January 18, 2013
    Publication date: February 27, 2014
    Applicants: Industry-Academic Cooperation Foundation Gyeongsang National University, SAMSUNG DISPLAY CO., LTD.,
    Inventors: Se-Hun Kim, Mie-Hwa PARK, Sam-Il KOH, Mi-Kyung KIM, Kwan-Hee LEE, Yun-Hi KIM