Patents by Inventor Seung-Hak Hyun

Seung-Hak Hyun 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).

  • Green Electroluminescent Compounds and Organic Electroluminescent Device Using the Same
    Publication number: 20090128010
    Abstract: The present invention relates to organic electroluminescent compounds represented by Chemical Formula 1 or 2, a process for preparing the same, and an organic light emitting diode (OLED) which comprises, as a luminescent region interposed between an anode and a cathode, at least one compound (s) selected from those represented by Chemical Formula 1 or 2, and at least one compound selected from anthracene derivatives, benz[a]anthracene derivatives and naphthacene derivatives. The electroluminescent compound according to the present invention is a green electroluminescent compound having maximized electroluminescent efficiency and lifetime of device.
    Type: Application
    Filed: August 14, 2006
    Publication date: May 21, 2009
    Inventors: Seung-Hak Hyun, Jea-Sung Lee, Sang-Man Si, Keun-Hee Han, Hyuck-Joo Kwon, Young-Jun Cho, Seung-Soo Yoon, Bong-Ok Kim, Sung-Min Kim, Chi-Sik Kim, Il-Won Choi