Patents by Inventor Hui-Hsin CHU

Hui-Hsin CHU 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 AND SYSTEM FOR FORMATION OF VERTICAL MICROVIAS IN OPAQUE CERAMIC THIN-PLATE BY FEMTOSECOND LASER PULSE
    Publication number: 20150343567
    Abstract: A method and system for formation of vertical microvias in an opaque ceramic thin-plate by femtosecond laser pulses are introduced. The method includes (a) thin an opaque ceramic substrate and reduce its thickness to a range of 20-100 ?m to provide the ceramic thin-plate; (b) place the ceramic thin-plate on a carrier; and (c) drill the ceramic thin-plate by the femtosecond laser pulses, wherein the femtosecond laser pulses have the following parameters, including a pulse width <100 fs, a pulse frequency of 1,000˜10,000 Hz, a laser with a central wavelength of 800 nm, and a movable stage with a speed of 20-200 ?m/s. Hence, vertical mirovias with high aspect ratio can be fabricated in an opaque ceramic thin-plate.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 3, 2015
    Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chih WANG, Chi-Haw CHIANG, Chih-Wei LUO, Sheng-Yang TSENG, Ya-Hsin TSENG, Hui-Hsin CHU