Patents by Inventor Soon-Jae Yu

Soon-Jae Yu 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).

  • Nitride red phosphors and white light emitting diode using rare-earth-co-doped nitride red phosphors
    Patent number: 8007686
    Abstract: Disclosed are nitride red phosphors and white light emitting diodes using the same. More particularly, the present invention provides a nitride red phosphor with easily controlled composition of phosphor fraction and improved uniformity and color gamut thereof, a method for preparation thereof, a white light emitting diode with excellent color rendition and high light emitting efficiency, and a white light emitting diode package using the same.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: August 30, 2011
    Assignee: Korea Institute of Energy Research
    Inventors: Joo-Seok Park, Bo-Yoon Jang, Soon-Jae Yu, Joon-Soo Kim
  • Nitride Red Phosphors and White Light Emitting Diode Using Rare-Earth-Co-Doped Nitride Red Phosphors
    Publication number: 20100163896
    Abstract: Disclosed are nitride red phosphors and white light emitting diodes using the same. More particularly, the present invention provides a nitride red phosphor with easily controlled composition of phosphor fraction and improved uniformity and color gamut thereof, a method for preparation thereof, a white light emitting diode with excellent color rendition and high light emitting efficiency, and a white light emitting diode package using the same.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Applicant: Korea Institute of Energy Research
    Inventors: Joo-Seok Park, Bo-Yoon Jang, Soon-Jae Yu, Joon-Soo Kim
  • Semiconductor light emitting diode and method for manufacturing the same
    Publication number: 20050104081
    Abstract: Provided is a light emitting diode including a base substrate having a via hole, a buffer layer having a via hole which is partially overlapped with the via hole of the base substrate, a first conductive contact layer formed on the buffer layer, a first clad layer formed on the second conductive contact layer, a light emitting layer formed on the first clad layer, a second clad layer formed on the light emitting layer, a second conductive contact layer formed on the second conductive clad layer, a first electrode formed on the second conductive contact layer, and a second electrode connected with the first conductive contact layer through the via hole.
    Type: Application
    Filed: June 1, 2004
    Publication date: May 19, 2005
    Inventors: Seong-Jin Kim, Yong-Seok Choi, Chang-Yen Kim, Young-Heon Han, Soon-Jae Yu