Patents by Inventor Cheng-Hiong Chen

Cheng-Hiong Chen 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).

  • Method of fabricating linear cascade high-speed green light emitting diode
    Patent number: 7674642
    Abstract: Green light emitting diodes (LED) of gallium arsenide (GaAs) are series-connected. The series connection has a small transmission attenuation and a wide bandwidth. The GaAs LED has a big forward bias and so neither extra driving current nor complex resonant-cavity epitaxy layer is needed. Hence, the present invention has a high velocity, a high efficiency and a high power while an uneven current distribution is avoided.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: March 9, 2010
    Assignee: National Central University
    Inventors: Jin-Wei Shi, Jinn-Kong Sheu, Mao-Jen Wu, Chun-Kai Wang, Cheng-Hiong Chen, Jen-Inn Chyi