Patents by Inventor Hung-Yi Liu

Hung-Yi Liu 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: 8504965
    Abstract: A method of designing integrated circuits includes providing a design of an integrated circuit at a first scale, wherein the integrated circuit includes a shrinkable circuit including a first intellectual property (IP); and a non-shrinkable circuit including a second IP having a hierarchical structure. A marker layer is formed to cover the non-shrinkable circuit, wherein the shrinkable circuit is not covered by the marker layer. The electrical performance of the non-shrinkable circuit is simulated using a simulation tool, wherein the simulated non-shrinkable circuit is at a second scale smaller than the first scale.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 6, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hung-Yi Liu, Chung-Hsing Wang, Yung-Chin Hou, Lie-Szu Juang
  • Patent number: 8307321
    Abstract: A method for dummy metal and dummy via insertion is provided. In one embodiment, dummy metals are inserted using a place and route tool, where the place and route tool has timing-awareness. Then, dummy vias arrays are inserted inside an overlap area of dummy metals using a design-rule-checking utility. Fine-grained dummy vias arrays are inserted in available space far away from main patterns. The dummy-patterns resulting from the inserted dummy vias are compressed using the design-rule-checking utility to reduce the size of a graphic data system file generated from the integrated circuit design. The dummy vias can be inserted with relaxed via spacing rules. The dummy metals are inserted with a constant line-end spacing between them for better process control and the maximum length of the dummy metal can be limited for smaller coupling effects. The dummy vias can have various sizes and a square or rectangular shape.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: November 6, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hung-Yi Liu, Chung-Hsing Wang, Chih-Chieh Chen, Jian-Yi Li
  • Patent number: 8239802
    Abstract: A system and method for computer-aided design of semiconductor integrated circuit devices provides for having dummy vias beneath UBM of bump cells to prevent delamination at the bump cell sites during bonding. The dummy vias are inserted into the design and bump cell placement occurs during the floorplanning stage and prior to placement and routing of the active integrated circuit components. In this manner, a sufficiently high via density is achieved and design information on the bump cells including the dummy vias is provided to a computer-aided design, CAD, system along with program instructions for carrying out the indicated sequence of design operations.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: August 7, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hung-Yi Liu, Chung-Hsing Wang, Agrawal Aditya Binodkumar
  • Publication number: 20120084745
    Abstract: A method of designing integrated circuits includes providing a design of an integrated circuit at a first scale, wherein the integrated circuit includes a shrinkable circuit including a first intellectual property (IP); and a non-shrinkable circuit including a second IP having a hierarchical structure. A marker layer is formed to cover the non-shrinkable circuit, wherein the shrinkable circuit is not covered by the marker layer. The electrical performance of the non-shrinkable circuit is simulated using a simulation tool, wherein the simulated non-shrinkable circuit is at a second scale smaller than the first scale.
    Type: Application
    Filed: September 30, 2010
    Publication date: April 5, 2012
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hung-Yi Liu, Chung-Hsing Wang, Yung-Chin Hou, Lie-Szu Juang
  • Publication number: 20110083115
    Abstract: A system and method for computer-aided design of semiconductor integrated circuit devices provides for having dummy vias beneath UBM of bump cells to prevent delamination at the bump cell sites during bonding. The dummy vias are inserted into the design and bump cell placement occurs during the floorplanning stage and prior to placement and routing of the active integrated circuit components. In this manner, a sufficiently high via density is achieved and design information on the bump cells including the dummy vias is provided to a computer-aided design, CAD, system along with program instructions for carrying out the indicated sequence of design operations.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 7, 2011
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hung-Yi LIU, Chung-Hsing WANG, Agrawal Aditya BINODKUMAR
  • Publication number: 20100242008
    Abstract: A method for dummy metal and dummy via insertion is provided. In one embodiment, dummy metals are inserted using a place and route tool, where the place and route tool has timing-awareness. Then, dummy vias arrays are inserted inside an overlap area of dummy metals using a design-rule-checking utility. Fine-grained dummy vias arrays are inserted in available space far away from main patterns. The dummy-patterns resulting from the inserted dummy vias are compressed using the design-rule-checking utility to reduce the size of a graphic data system file generated from the integrated circuit design. The dummy vias can be inserted with relaxed via spacing rules. The dummy metals are inserted with a constant line-end spacing between them for better process control and the maximum length of the dummy metal can be limited for smaller coupling effects. The dummy vias can have various sizes and a square or rectangular shape.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 23, 2010
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hung-Yi LIU, Chung-Hsing WANG, Chih-Chieh CHEN, Jian-Yi LI