Patents by Inventor Minghsng Tsai

Minghsng Tsai 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).

  • Patent number: 6893549
    Abstract: A cleaning apparatus for an ECMD anode pad including a vacuum head which applies vacuum pressure to the surface of the anode pad between ECMD operations in order to remove particles precipitated onto the surface of the anode pad and prevent or minimize inadvertent scratching or peeling of a wafer supported by the pad during the process. The particles are dislodged from the anode pad and removed from the ECMD system by flow of electrolyte solution into the vacuum head. The electrolyte solution is typically filtered before returning to the electrolyte tank for ultimate redistribution to the ECMD system.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: May 17, 2005
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
    Inventors: Shih-Wei Chou, Minghsng Tsai