Patents by Inventor Yi Kwon Lee

Yi Kwon Lee 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).

  • Color converting element and light emitting device including the same
    Patent number: 9490403
    Abstract: Disclosed are a color converting element and a method for manufacturing the color converting element. The disclosed color converting element includes: first wavelength conversion cells spaced apart from one another; and second wavelength conversion cells arranged among the first wavelength conversion cells. The first and second wavelength conversion cells are made of a material containing glass. The color converting element of the disclosed technology is configured in that color converting cells having different color converting characteristics are periodically arranged, when the color converting element is applied to a color converting glass material which may improve thermal and chemical durability of white LEDs, thus minimizing the degradation of efficiency or luminance caused by an interaction between color converting phosphors or active ions and allowing for ease of adjustment of color rendering index.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: November 8, 2016
    Inventors: Woon Jin Chung, Ka Ram Han, Yi Kwon Lee
  • COLOR CONVERTING ELEMENT AND LIGHT EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20150194579
    Abstract: Disclosed are a color converting element and a method for manufacturing the color converting element. The disclosed color converting element includes: first wavelength conversion cells spaced apart from one another; and second wavelength conversion cells arranged among the first wavelength conversion cells. The first and second wavelength conversion cells are made of a material containing glass. The color converting element of the disclosed technology is configured in that color converting cells having different color converting characteristics are periodically arranged, when the color converting element is applied to a color converting glass material which may improve thermal and chemical durability of white LEDs, thus minimizing the degradation of efficiency or luminance caused by an interaction between color converting phosphors or active ions and allowing for ease of adjustment of color rendering index.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 9, 2015
    Inventors: Woon Jin Chung, Ka Ram Han, Yi Kwon Lee