Patents by Inventor Yin-Cheng Ma

Yin-Cheng Ma 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: 6651704
    Abstract: Stationary and pivotable trays for semiconductor wafer transfer are disclosed. A first moving equipment is movable to move a container for holding one or more semiconductor wafers from a wafer loading and unloading position to a wafer tank immersion position. A second moving equipment is movable to move the container from the wafer loading and unloading position to a container loading and unloading position. A stationary tray is located under the wafer loading and unloading position to collect liquid dripping from the first moving equipment. A pivotable tray is located to one side of the stationary tray, to collect the liquid dripping from the first moving equipment when this equipment is moving to the wafer loading and unloading position, such that the pivotable tray is lowered. The pivotable tray is raised when the second moving equipment is moving to the wafer loading and unloading position.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: November 25, 2003
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
    Inventor: Yin-Cheng Ma
  • Patent number: 6597964
    Abstract: A thermocoupled lift system for semiconductor etch chambers. The system comprises multiple thermocoupled lift pins which are vertically extendible from a heater block inside a semiconductor etch chamber and are capable of lowering a semiconductor wafer onto the heater block before the etching process and lifting the wafer from the heater block after the etching process. In the event that the temperature of the wafer exceeds a predetermined value after the etching process, the lift pins trigger release of a cooling purge gas such as nitrogen into the etching chamber to partially cool the wafer prior to transfer of the wafer to a cool down chamber for further cooling. The initial gas-induced cooling of the wafer prevents thermal stressing thereof upon transfer of the wafer to the cool down chamber.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: July 22, 2003
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
    Inventors: Yu-Chih Huang, Yin-Cheng Ma, Sawyer Ho, Wen-Shyang Tsai, Chen-Feng Lin
  • Publication number: 20030094212
    Abstract: Stationary and pivotable trays for semiconductor wafer transfer are disclosed. A first moving equipment is movable to move a container for holding one or more semiconductor wafers from a wafer loading and unloading position to a wafer tank immersion position. A second moving equipment is movable to move the container from the wafer loading and unloading position to a container loading and unloading position. A stationary tray is located under the wafer loading and unloading position to collect liquid dripping from the first moving equipment. A pivotable tray is located to one side of the stationary tray, to collect the liquid dripping from the first moving equipment when this equipment is moving to the wafer loading and unloading position, such that the pivotable tray is lowered. The pivotable tray is raised when the second moving equipment is moving to the wafer loading and unloading position.
    Type: Application
    Filed: November 19, 2001
    Publication date: May 22, 2003
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Yin-Cheng Ma