Patents by Inventor Kuo-Jhan Kao

Kuo-Jhan Kao 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).

  • LASER COLOR MARKING METHOD FOR A SEMICONDUCTOR PACKAGE
    Publication number: 20190229064
    Abstract: A laser color marking method for a semiconductor package has steps of: (a) providing a semiconductor element; (b) sputtering a metal layer on the semiconductor element; (c) obtaining a marking pattern; and (d) applying a laser light source on the marking region to form a mark according to the marking pattern. The mark is consisted of an optical oxide film converting ambient light to a corresponding color light, so a visible color mark is marked. Therefore, the present invention easily laser-marks the visible color mark on the semiconductor package.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 25, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Chin-Ta Wu, Sheng-Tou Tseng, Kuo-Jhan Kao, Ying-Lin Chen, Cheng-Hung Song, Hung-Chieh Huang, Kun-Chi Hsu