Patents by Inventor Truc Phoung Thi Vu

Truc Phoung Thi Vu 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).

  • Phosphors for warm white emitters
    Patent number: 9528665
    Abstract: A method for fabricating light-emitting devices includes obtaining a plurality of light-emitting diode (LED) chips fabricated to emit blue light and preparing a phosphor-containing material comprising a matrix material having dispersed therein a mixture of a red phosphor and a green phosphor in a fixed ratio to each other. The method also includes disposing different thicknesses of the phosphor-containing material on different ones of the LED chips. The fixed ratio is chosen such that LED chips having different thicknesses of the phosphor-containing material emit light characterized by different points along the Planckian locus in a CIE chromaticity diagram.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 27, 2016
    Assignee: LedEngin, Inc.
    Inventors: Zequn Mei, Truc Phoung Thi Vu
  • PHOSPHORS FOR WARM WHITE EMITTERS
    Publication number: 20140264402
    Abstract: A method for fabricating light-emitting devices includes obtaining a plurality of light-emitting diode (LED) chips fabricated to emit blue light and preparing a phosphor-containing material comprising a matrix material having dispersed therein a mixture of a red phosphor and a green phosphor in a fixed ratio to each other. The method also includes disposing different thicknesses of the phosphor-containing material on different ones of the LED chips. The fixed ratio is chosen such that LED chips having different thicknesses of the phosphor-containing material emit light characterized by different points along the Planckian locus in a CIE chromaticity diagram.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: LedEngin, Inc.
    Inventors: Zequn Mei, Truc Phoung Thi Vu