Patents by Inventor Siao-Fang Song

Siao-Fang Song 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).

  • White-light emitting devices with stabilized dominant wavelength
    Patent number: 8459814
    Abstract: The disclosure provides a dominant wavelength stabilized white light emitting device and a method for stabilizing dominant wavelength of a white-light light emitting device. The light emitting device includes light-emitting diode chips, a phosphor resin layer disposed above the diode chip, and an optical filter disposed above the resin with a gap interposed between the phosphor resin layer and the optical filter. The phosphor resin layer contains a phosphor that is excited by light of the first wavelengths to emit light of second wavelengths. The optical filter reflects light of wavelength shorter than the peak wavelength and transmitting light of the second wavelengths with a modulated transmittance in a range of the first wavelengths.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: June 11, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jung-Chieh Su, Siao-Fang Song
  • WHITE-LIGHT EMITTING DEVICES WITH STABILIZED DOMINANT WAVELENGTH
    Publication number: 20110279998
    Abstract: The disclosure provides a dominant wavelength stabilized white light emitting device and a method for stabilizing dominant wavelength of a white-light light emitting device. The light emitting device includes light-emitting diode chips, a phosphor resin layer disposed above the diode chip, and an optical filter disposed above the resin with a gap interposed between the phosphor resin layer and the optical filter. The phosphor resin layer contains a phosphor that is excited by light of the first wavelengths to emit light of second wavelengths. The optical filter reflects light of wavelength shorter than the peak wavelength and transmitting light of the second wavelengths with a modulated transmittance in a range of the first wavelengths.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 17, 2011
    Applicant: National Taiwan University of Science and Technology
    Inventors: Jung-Chieh Su, Siao-Fang Song