Patents by Inventor Shih-Feng Hsueh

Shih-Feng Hsueh 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).

  • MANUFACTURING METHOD OF PIEZOELECTRIC VIBRATION ELEMENT
    Publication number: 20240048111
    Abstract: A manufacturing method of a piezoelectric vibration element includes at least the following steps. Quartz wafer is provided. A first metal material layer and a second metal material layer are fully formed on a first surface and a second surface of the quartz wafer, respectively. A first photoresist material layer and a second photoresist material layer are fully formed on the first metal material layer and the second metal material layer, respectively. Only the first photoresist material layer is performed to an exposure and development process to form a first patterned photoresist layer. A portion of the first metal material layer is removed by the first patterned photoresist layer to form a metal pattern. The first patterned photoresist layer and the second photoresist material layer are removed.
    Type: Application
    Filed: September 8, 2022
    Publication date: February 8, 2024
    Applicant: TXC Corporation
    Inventors: Po-Sheng Huang, Chieh-Jen Cho, Shih-Feng Hsueh, Ching-Jui Chuang, Tzu-Fan Chen, Chiu-Hua Chen