Patents by Inventor Lester Chang

Lester 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).

  • Publication number: 20240111935
    Abstract: A method of generating an IC layout diagram includes receiving the IC layout diagram including an active region, a gate region extending across the active region from a first active region edge to a second active region edge, and a gate via positioned at a location along the gate region between the first and second edges, configuring a delta resistance network including the first and second edges, a midpoint between the first and second edges, and resistance values based on the location and first and second edges, and performing a simulation based on the delta resistance network.
    Type: Application
    Filed: November 27, 2023
    Publication date: April 4, 2024
    Inventors: Ke-Ying SU, Ke-Wei SU, Keng-Hua KUO, Lester CHANG
  • Patent number: 11907636
    Abstract: A method of generating an IC layout diagram includes receiving a first gate resistance value of a gate region in an IC layout diagram, the first gate resistance value corresponding to a location of a gate via positioned within an active region and along a width of the gate region extending across the active region, determining a second gate resistance value based on the location and the width, using the first and second resistance values to determine that the IC layout diagram does not comply with a design specification, and based on the non-compliance with the design specification, modifying the IC layout diagram.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: February 20, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Ke-Ying Su, Jon-Hsu Ho, Ke-Wei Su, Liang-Yi Chen, Wen-Hsing Hsieh, Wen-Koi Lai, Keng-Hua Kuo, Kuopei Lu, Lester Chang, Ze-Ming Wu
  • Patent number: 11842135
    Abstract: A method of generating an integrated circuit (IC) layout diagram of an IC device includes receiving the IC layout diagram of the IC device, the IC layout diagram including a gate region having a width across an active region. The width is divided into a plurality of width segments based on a location of a gate via, and a simulation is performed based on the IC layout diagram and including an effective resistance calculated using at least one width segment of the plurality of width segments.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: December 12, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Ke-Ying Su, Ke-Wei Su, Keng-Hua Kuo, Lester Chang
  • Publication number: 20220343054
    Abstract: A method of generating an IC layout diagram includes receiving a first gate resistance value of a gate region in an IC layout diagram, the first gate resistance value corresponding to a location of a gate via positioned within an active region and along a width of the gate region extending across the active region, determining a second gate resistance value based on the location and the width, using the first and second resistance values to determine that the IC layout diagram does not comply with a design specification, and based on the non-compliance with the design specification, modifying the IC layout diagram.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Inventors: Ke-Ying SU, Jon-Hsu HO, Ke-Wei SU, Liang-Yi CHEN, Wen-Hsing HSIEH, Wen-Koi LAI, Keng-Hua KUO, KuoPei LU, Lester CHANG, Ze-Ming WU
  • Patent number: 11392749
    Abstract: A method of generating a netlist of an IC device includes receiving gate region information of the IC device. The gate region information includes a width of the gate region, the width extending at least from a first edge of an active region to a second edge of the active region, a location of a gate via positioned within the active region and along the width, and a first gate resistance value corresponding to the gate region. The method includes determining a second gate resistance value based on the location and the width, and modifying the netlist based on the second gate resistance value.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: July 19, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Ke-Ying Su, Jon-Hsu Ho, Ke-Wei Su, Liang-Yi Chen, Wen-Hsing Hsieh, Wen-Koi Lai, Keng-Hua Kuo, KuoPei Lu, Lester Chang, Ze-Ming Wu
  • Publication number: 20210073454
    Abstract: A method of generating a netlist of an IC device includes receiving gate region information of the IC device. The gate region information includes a width of the gate region, the width extending at least from a first edge of an active region to a second edge of the active region, a location of a gate via positioned within the active region and along the width, and a first gate resistance value corresponding to the gate region. The method includes determining a second gate resistance value based on the location and the width, and modifying the netlist based on the second gate resistance value.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 11, 2021
    Inventors: Ke-Ying SU, Jon-Hsu HO, Ke-Wei SU, Liang-Yi CHEN, Wen-Hsing HSIEH, Wen-Koi LAI, Keng-Hua KUO, KuoPei LU, Lester CHANG, Ze-Ming WU
  • Publication number: 20210019467
    Abstract: A method of generating an integrated circuit (IC) layout diagram of an IC device includes receiving the IC layout diagram of the IC device, the IC layout diagram including a gate region having a width across an active region. The width is divided into a plurality of width segments based on a location of a gate via, and a simulation is performed based on the IC layout diagram and including an effective resistance calculated using at least one width segment of the plurality of width segments.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 21, 2021
    Inventors: Ke-Ying SU, Ke-Wei SU, Keng-Hua KUO, Lester CHANG
  • Patent number: 10860769
    Abstract: An integrated circuit (IC) design method includes receiving a spatial correlation matrix, R, of certain property of post-fabrication IC devices; and deriving a random number generation function g(x, y) such that random numbers for a device at a coordinate (x, y) can be generated by g(x, y) independent of other devices, and all pairs of random numbers satisfy the spatial correlation matrix R. The method further includes receiving an IC design layout having pre-fabrication IC devices, each of the pre-fabrication IC devices having a coordinate and a first value of the property. The method further includes generating random numbers using the coordinates of the pre-fabrication IC devices and the function g(x, y); deriving second values of the property by applying the random numbers to the first values; and providing the second values to an IC simulation tool.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: December 8, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Katherine Chiang, Cheng Hsiao, Chang-Yu Huang, Juan Yi Chen, Ke-Wei Su, Chung-Kai Lin, Lester Chang, Min-Chie Jeng
  • Patent number: 10846456
    Abstract: A method of generating a netlist of an IC device includes extracting dimensions of a gate region of the IC device, the dimensions including a width of the gate region, the width extending at least from a first edge of an active region to a second edge of the active region, and a distance from a first end of the width to a gate via positioned along the width. A first gate resistance value corresponding to the gate region is received, a second gate resistance value is determined based on the distance and the width, and the netlist is updated based on the first and second gate resistance values.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: November 24, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Ke-Ying Su, Jon-Hsu Ho, Ke-Wei Su, Liang-Yi Chen, Wen-Hsing Hsieh, Wen-Koi Lai, Keng-Hua Kuo, KuoPei Lu, Lester Chang, Ze-Ming Wu
  • Patent number: 10796059
    Abstract: A method of generating an integrated circuit (IC) layout diagram of an IC device includes receiving a layout diagram of the IC device, the IC layout diagram including a gate region having a width across an active region, and a gate via positioned at a location along the width. The location is used to divide the width into a plurality of width segments, an effective resistance of the gate region is calculated based on the plurality of width segments, and the effective resistance is used to determine whether the IC layout diagram complies with a design specification.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 6, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Ke-Ying Su, Ke-Wei Su, Keng-Hua Kuo, Lester Chang
  • Publication number: 20200125782
    Abstract: An integrated circuit (IC) design method includes receiving a spatial correlation matrix, R, of certain property of post-fabrication IC devices; and deriving a random number generation function g(x, y) such that random numbers for a device at a coordinate (x, y) can be generated by g(x, y) independent of other devices, and all pairs of random numbers satisfy the spatial correlation matrix R. The method further includes receiving an IC design layout having pre-fabrication IC devices, each of the pre-fabrication IC devices having a coordinate and a first value of the property. The method further includes generating random numbers using the coordinates of the pre-fabrication IC devices and the function g(x, y); deriving second values of the property by applying the random numbers to the first values; and providing the second values to an IC simulation tool.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Inventors: Katherine Chiang, Cheng Hsiao, Chang-Yu Huang, Juan Yi Chen, Ke-Wei Su, Chung-Kai Lin, Lester Chang, Min-Chie Jeng
  • Patent number: 10521538
    Abstract: An integrated circuit (IC) design method includes receiving a spatial correlation matrix, R, of certain property of post-fabrication IC devices; and deriving a random number generation function g(x, y) such that random numbers for a device at a coordinate (x, y) can be generated by g(x, y) independent of other devices, and all pairs of random numbers satisfy the spatial correlation matrix R. The method further includes receiving an IC design layout having pre-fabrication IC devices, each of the pre-fabrication IC devices having a coordinate and a first value of the property. The method further includes generating random numbers using the coordinates of the pre-fabrication IC devices and the function g(x, y); deriving second values of the property by applying the random numbers to the first values; and providing the second values to an IC simulation tool.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 31, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD
    Inventors: Katherine Chiang, Cheng Hsiao, Chang-Yu Huang, Juan Yi Chen, Ke-Wei Su, Chung-Kai Lin, Lester Chang, Min-Chie Jeng
  • Publication number: 20190340328
    Abstract: A method of generating a netlist of an IC device includes extracting dimensions of a gate region of the IC device, the dimensions including a width of the gate region, the width extending at least from a first edge of an active region to a second edge of the active region, and a distance from a first end of the width to a gate via positioned along the width. A first gate resistance value corresponding to the gate region is received, a second gate resistance value is determined based on the distance and the width, and the netlist is updated based on the first and second gate resistance values.
    Type: Application
    Filed: April 19, 2019
    Publication date: November 7, 2019
    Inventors: Ke-Ying SU, Jon-Hsu HO, Ke-Wei SU, Liang-Yi CHEN, Wen-Hsing HSIEH, Wen-Koi LAI, Keng-Hua KUO, KuoPei LU, Lester CHANG, Ze-Ming WU
  • Publication number: 20190294750
    Abstract: A method of generating a layout diagram of an IC device includes receiving a layout diagram of the IC device, the IC layout diagram including a gate region having a width across an active region, and a gate via positioned at a location along the width. The location is used to divide the width into a plurality of width segments, an effective resistance of the gate region is calculated based on the plurality of width segments, and the effective resistance is used to determine whether the IC layout diagram complies with a design specification.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 26, 2019
    Inventors: Ke-Ying SU, Ke-Wei SU, Keng-Hua KUO, Lester CHANG
  • Publication number: 20170316138
    Abstract: An integrated circuit (IC) design method includes receiving a spatial correlation matrix, R, of certain property of post-fabrication IC devices; and deriving a random number generation function g(x, y) such that random numbers for a device at a coordinate (x, y) can be generated by g(x, y) independent of other devices, and all pairs of random numbers satisfy the spatial correlation matrix R. The method further includes receiving an IC design layout having pre-fabrication IC devices, each of the pre-fabrication IC devices having a coordinate and a first value of the property. The method further includes generating random numbers using the coordinates of the pre-fabrication IC devices and the function g(x, y); deriving second values of the property by applying the random numbers to the first values; and providing the second values to an IC simulation tool.
    Type: Application
    Filed: October 26, 2016
    Publication date: November 2, 2017
    Inventors: Katherine Chiang, Cheng Hsiao, Chang-Yu Huang, Juan Yi Chen, Ke-Wei Su, Chung-Kai Lin, Lester Chang, Min-Chie Jeng