Patents by Inventor Chungjz Lu

Chungjz Lu 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).

  • Power up/down sequence scheme for memory devices
    Patent number: 7663959
    Abstract: A method for controlling a word line signal for a memory device during a power down process, comprising: pulling the word line signal down to a low logic state; disconnecting a current path from an external power supply to an internal power supply after the word line signal has been pulled down to the low logic state; and disconnecting a current path from an external ground voltage to an internal ground voltage after a current path from an external power supply to an internal power supply has been completely disconnected.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: February 16, 2010
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Derek Tao, Chungjz Lu, Annie-Li-Keow Lum
  • Power Up/Down Sequence Scheme for Memory Devices
    Publication number: 20090141579
    Abstract: A method for controlling a word line signal for a memory device during a power down process, comprising: pulling the word line signal down to a low logic state; disconnecting a current path from an external power supply to an internal power supply after the word line signal has been pulled down to the low logic state; and disconnecting a current path from an external ground voltage to an internal ground voltage after a current path from an external power supply to an internal power supply has been completely disconnected.
    Type: Application
    Filed: May 12, 2008
    Publication date: June 4, 2009
    Inventors: Derek Tao, Chungjz Lu, Annie-Li-Keow Lum