Patents by Inventor May Chang

May Chang 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: 8816403
    Abstract: Provided are semiconductor device cells, methods for forming the semiconductor device cells and a layout style for the semiconductor device cells. The device cells may be repetitive cells used throughout an integrated circuit. The layout style utilizes an area at the polysilicon level that is void of polysilicon and which can accommodate conductive leads therein or thereover. The conductive leads are formed of material typically used for contacts or vias and are disposed beneath the first metal interconnect level which couples device cells to one another. The subjacent local conductive leads may form subjacent signal lines allowing for additional power mesh lines to be included within the limited number of metal tracks that can be accommodated within a device cell and in accordance with metal track design spacing rules.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 26, 2014
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Jung-Hsuan Chen, May Chang, Chiting Cheng, Li-Chun Tien
  • Publication number: 20130069236
    Abstract: Provided are semiconductor device cells, methods for forming the semiconductor device cells and a layout style for the semiconductor device cells. The device cells may be repetitive cells used throughout an integrated circuit. The layout style utilizes an area at the polysilicon level that is void of polysilicon and which can accommodate conductive leads therein or thereover. The conductive leads are formed of material typically used for contacts or vias and are disposed beneath the first metal interconnect level which couples device cells to one another. The subjacent local conductive leads may form subjacent signal lines allowing for additional power mesh lines to be included within the limited number of metal tracks that can be accommodated within a device cell and in accordance with metal track design spacing rules.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Jung-Hsuan Chen, May Chang, Chiting Cheng, Li-Chun Tien