Patents by Inventor Frank Y. LEE

Frank Y. LEE 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).

  • Fast flip-flop structure with reduced set-up time
    Patent number: 8803581
    Abstract: A flip-flop structure with reduced set-up time is provided. The flip-flop includes the first master latch receiving a function data through the first switch controlled by a clock signal, the second master latch receiving a scan data through the second switch controlled by the clock signal, and a slave latch connected to the first master latch through the third switch controlled by the clock signal. The second master latch is coupled to the first master latch through the fourth switch controlled by the scan enable signal so that the scan enable signal controls whether the function data or the scan data becomes an output from the first master latch to the slave latch, and the slave latch is used to latch and transmit the output from the first master latch.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: August 12, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shyh-An Chi, Shiue Tsong Shen, Jeff Lee, Frank Y. Lee
  • FAST FLIP-FLOP STRUCTURE WITH REDUCED SET-UP TIME
    Publication number: 20100264972
    Abstract: A flip-flop structure with reduced set-up time is provided. The flip-flop includes the first master latch receiving a function data through the first switch controlled by a clock signal, the second master latch receiving a scan data through the second switch controlled by the clock signal, and a slave latch connected to the first master latch through the third switch controlled by the clock signal. The second master latch is coupled to the first master latch through the fourth switch controlled by the scan enable signal so that the scan enable signal controls whether the function data or the scan data becomes an output from the first master latch to the slave latch, and the slave latch is used to latch and transmit the output from the first master latch.
    Type: Application
    Filed: April 12, 2010
    Publication date: October 21, 2010
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shyh-An CHI, Shiue Tsong SHEN, Jeff LEE, Frank Y. LEE