Patents by Inventor Oleg Ledyaev

Oleg Ledyaev 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).

  • Patent number: 8723206
    Abstract: A semiconductor light emitting device has a semiconductor laminate including first and second conductivity type semiconductor layers respectively providing first and second main surfaces and an active layer. The semiconductor laminate is divided into first and second regions. At least one contact hole is formed to pass through the active layer from the second main surface of the first region. A first electrode is formed on the second main surface to be connected to the first conductivity type semiconductor layer of the first region and the second conductivity type semiconductor layer of the second region. A second electrode is formed on the second main surface of the first region to be connected to the second conductivity type semiconductor layer of the first region and the first conductivity type semiconductor layer of the second region.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Grigory Onushkin, Oleg Ledyaev, Jong Hoon Lim, Joong Kon Son, Pun Jae Choi
  • Publication number: 20130062638
    Abstract: A semiconductor light emitting device has a semiconductor laminate including first and second conductivity type semiconductor layers respectively providing first and second main surfaces and an active layer. The semiconductor laminate is divided into first and second regions. At least one contact hole is formed to pass through the active layer from the second main surface of the first region. A first electrode is formed on the second main surface to be connected to the first conductivity type semiconductor layer of the first region and the second conductivity type semiconductor layer of the second region. A second electrode is formed on the second main surface of the first region to be connected to the second conductivity type semiconductor layer of the first region and the first conductivity type semiconductor layer of the second region.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 14, 2013
    Inventors: Grigory ONUSHKIN, Oleg Ledyaev, Jong Hoon Lim, Joong Kon Son, Pun Jae Choi
  • Patent number: 7740823
    Abstract: A method of growing a III group nitride single crystal by using a metal-organic chemical vapor deposition (MOCVD) process, the method including: preparing an r-plane (1-102) substrate; forming a nitride-based nucleation layer on the substrate; and growing a nonpolar a-plane nitride gallium single crystal on the nitride-based nucleation layer while altering increase and decrease of a ratio of V/III group to alternate a horizontal growth mode and a vertical growth mode.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: June 22, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Oleg Ledyaev, Ki Ho Park, Si Hyuk Lee, Soo Min Lee
  • Publication number: 20080152570
    Abstract: A method of growing a III group nitride single crystal by using a metal-organic chemical vapor deposition (MOCVD) process, the method including: preparing an r-plane (1-102) substrate; forming a nitride-based nucleation layer on the substrate; and growing a nonpolar a-plane nitride gallium single crystal on the nitride-based nucleation layer while altering increase and decrease of a ratio of V/III group to alternate a horizontal growth mode and a vertical growth mode.
    Type: Application
    Filed: October 23, 2007
    Publication date: June 26, 2008
    Inventors: Oleg Ledyaev, Ki Ho Park, Si Hyuk Lee, Soo Min Lee