Patents by Inventor Wha-II CHOI

Wha-II CHOI 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
    Patent number: 9590184
    Abstract: An organic light-emitting diode (OLED) is provided. The OLED comprises a substrate, a first electrode on the substrate, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, a hole migration region disposed between the first electrode and the emission layer, and an electron migration region disposed between the emission layer and the second electrode. The hole migration region comprises a tertiary amine having one N-substituent comprising a substituted or unsubstituted carbazole moiety and another N-substituent comprising a substituted or unsubstituted fluorene moiety. At least one of the hole migration region and the emission layer comprises a substituted or unsubstituted compound comprising at least two carbazole moieties.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: March 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-II Choi, So-Yeon Kim, Ji-Youn Lee
  • ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20160293868
    Abstract: An organometallic compound may be represented by one selected from the group of Formulae 5 to 8:
    Type: Application
    Filed: June 16, 2016
    Publication date: October 6, 2016
    Inventors: Jong-Won CHOI, Yoon-Hyun KWAK, Bum-Woo PARK, Sun-Young LEE, Wha-II CHOI, So-Yeon KIM, Ji-Youn LEE
  • Thieno[3,2-d]pyrimidine derivatives having inhibitory activity on protein kinases
    Patent number: 8999973
    Abstract: The present invention relates to a thieno[3,2-d]pyrimidine derivative of formula (I), or a pharmaceutically acceptable salt, hydrate or solvate thereof, which has an excellent inhibitory activity on protein kinases, and a pharmaceutical composition comprising the same is effective in preventing or treating abnormal cell growth diseases.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 7, 2015
    Assignees: Hanmi Science Co., Ltd, Korea Institute of Science and Technology, Catholic University Industry Academic Cooperation Foundation
    Inventors: Jung Beom Son, Seung Hyun Jung, Wha II Choi, Young Hee Jung, Jae Yul Choi, Ji Yeon Song, Kyu Hang Lee, Jae Chul Lee, Eun Young Kim, Young Gil Ahn, Maeng Sup Kim, Hwan Geun Choi, Tae Bo Sim, Young Jin Ham, Dong-sik Park, Hwan Kim, Dong-Wook Kim
  • ORGANIC LIGHT-EMITTING DIODE
    Publication number: 20140209880
    Abstract: An organic light-emitting diode includes a substrate, a first electrode, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode. The organic layer includes an emission layer, and the emission layer includes a first compound represented by Formula 1 and a second compound represented by Formula 100.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Won Choi, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Wha-II Choi, So-Yeon Kim, Ji-Youn Lee
  • ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20140070180
    Abstract: An organometallic compound may be represented by Formula 1:
    Type: Application
    Filed: March 14, 2013
    Publication date: March 13, 2014
    Inventors: Jong-Won CHOI, Yoon-Hyun KWAK, Bum-Woo PARK, Sun-Young LEE, Wha-II CHOI, So-Yeon KIM, Ji-Youn LEE
  • CONDENSATION COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20140034913
    Abstract: A condensation compound is represented by Formula 1, 2, or 3 where R1 to R24 and A to F are further defined in the detailed description.
    Type: Application
    Filed: January 8, 2013
    Publication date: February 6, 2014
    Inventors: So-Yeon KIM, Yoon-Hyun KWAK, Bum-Woo PARK, Jong-Won CHOI, Wha-II CHOI, Sun-Young LEE, Ji-Youn LEE, Jin-Young YUN