Patents by Inventor Woan-Jen Yang

Woan-Jen Yang 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 illumination device
    Patent number: 7931826
    Abstract: The invention provides a white light illumination device including an ultraviolet excitation light source and an ultraviolet excitable aluminosilicate phosphor. The ultraviolet excitable aluminosilicate phosphor has a formula as (M1-x,Rex)aAlbSicOd:D, wherein M is Mg, Ca, Sr, Ba or combination thereof. In addition, Re is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu or combination thereof, while 0<a, b, c, d, 2a+3b+4c=2d, and 0?x?a. Furthermore, D is F, Cl, I, Br, OH, S or combinations thereof. The aluminosilicate phosphor emits blue or blue-green light under the excitation of ultraviolet light, and the aluminosilicate phosphor may further collocate with different color phosphors to provide a white light illumination device.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: April 26, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Teng-Ming Chen, Woan-Jen Yang, Yao-Tsung Yeh, Chien-Yueh Tung, Tien-Heng Huang, Fang-Ching Chang, Yung Chi Chen, Wei-Jen Liu
  • WHITE LIGHT ILLUMINATION DEVICE
    Publication number: 20080149893
    Abstract: The invention provides a white light illumination device including an ultraviolet excitation light source and an ultraviolet excitable aluminosilicate phosphor. The ultraviolet excitable aluminosilicate phosphor has a formula as (M1-x,Rex)aAlbSicOd:D, wherein M is Mg, Ca, Sr, Ba or combination thereof. In addition, Re is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu or combination thereof, while 0<a,b,c,d, 2a+3b+4c=2d, and 0?x?a. Furthermore, D is F, Cl, I, Br, OH, S or combinations thereof. The aluminosilicate phosphor emits blue or blue-green light under the excitation of ultraviolet light, and the aluminosilicate phosphor may further collocate with different color phosphors to provide a white light illumination device.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 26, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Teng-Ming Chen, Woan-Jen Yang, Yao-Tsung Yeh, Chien-Yueh Tung, Tien-Heng Huang, Fang-Ching Chang, Yung Chi Chen, Wei-Jen Liu