Patents by Inventor Shih-Hsiang Tai

Shih-Hsiang Tai 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: 20230369480
    Abstract: A semiconductor device comprises an insulating region surrounding an active area having a channel direction and a transverse direction that is transverse to the channel direction. A source region and a drain region are disposed in the active area, and are spaced apart along the channel direction. A channel is disposed in the active area and is interposed between the source region and the drain region. The channel comprises a two-dimensional electron gas (2DEG). A gate line is oriented along the transverse direction and is disposed on the channel and has a gate width in the channel direction. The gate line comprises gate material. A gate line terminus is disposed at each end of the gate line. Each gate line terminus comprises the gate material. Each gate line terminus has a width in the channel direction that is at least 1.2 time the gate width.
    Type: Application
    Filed: May 11, 2022
    Publication date: November 16, 2023
    Inventors: Tzu-Wen Shih, Der-Ming Kuo, Ching-Hua Chiu, Meng-Shao Hsieh, Shih-Hsiang Tai
  • Patent number: 11515398
    Abstract: The present disclosure relates to a transistor device having source and drain regions within a substrate. A gate electrode is between the source and drain regions. A spacer has a lower lateral portion along an upper surface of the substrate between the gate electrode and the drain region, a vertical portion extending along a sidewall of the gate electrode, and an upper lateral portion extending from the vertical portion to an outermost sidewall directly over the gate electrode. A field plate is disposed along an upper surface and a sidewall of the spacer and is separated from the gate electrode and the substrate by the spacer. A first ILD layer overlies the substrate, the gate electrode, and the field plate. A first conductive contact has opposing outermost sidewalls intersecting a first horizontally extending surface of the field plate between the gate electrode and the drain region.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: November 29, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chien-Li Kuo, Scott Liu, Po-Wei Chen, Shih-Hsiang Tai
  • Patent number: 10943047
    Abstract: A circuit design method is provided, including the steps of: designing a plurality of paths, wherein each path includes a plurality of elements; determining a specific path of the plurality of paths by performing a timing analysis; replacing the specific element in the specific path with the configurable logic gate array cell; and selectively changing a connection mode of a metal layer to make the configurable logic gate array cell have another function. The timing analysis includes: for each path of the plurality of paths, determining whether a chip area meets a constraint condition and whether a timing violation will occur when a specific element in each path is replaced with a configurable logic gate array cell; and when both conditions are met, determining that path as the specific path.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: March 9, 2021
    Assignee: Silicon Motion, Inc.
    Inventor: Shih-Hsiang Tai
  • Publication number: 20200395451
    Abstract: The present disclosure relates to a transistor device having source and drain regions within a substrate. A gate electrode is between the source and drain regions. A spacer has a lower lateral portion along an upper surface of the substrate between the gate electrode and the drain region, a vertical portion extending along a sidewall of the gate electrode, and an upper lateral portion extending from the vertical portion to an outermost sidewall directly over the gate electrode. A field plate is disposed along an upper surface and a sidewall of the spacer and is separated from the gate electrode and the substrate by the spacer. A first ILD layer overlies the substrate, the gate electrode, and the field plate. A first conductive contact has opposing outermost sidewalls intersecting a first horizontally extending surface of the field plate between the gate electrode and the drain region.
    Type: Application
    Filed: August 28, 2020
    Publication date: December 17, 2020
    Inventors: Chien-Li Kuo, Scott Liu, Po-Wei Chen, Shih-Hsiang Tai
  • Patent number: 10825905
    Abstract: The present disclosure relates to a high voltage transistor device having a thin polysilicon film field plate, and an associated method of formation. In some embodiments, the high voltage transistor device has a gate electrode disposed between source and drain regions and separated from a substrate by a gate dielectric. A spacer is disposed along an upper surface of the substrate. The spacer extends along a first gate sidewall closer to the drain region, crosses over an upper edge of the gate electrode, and further extends laterally to cover a portion of an upper surface of the gate electrode. A field plate including a polysilicon thin film is disposed along upper and sidewall surfaces of the spacer so that the polysilicon thin film is separated from the gate electrode and the substrate by the spacer. The thin polysilicon film field plate improves the breakdown voltage of the transistor device.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: November 3, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chien-Li Kuo, Scott Liu, Po-Wei Chen, Shih-Hsiang Tai
  • Publication number: 20200218846
    Abstract: A circuit design method is provided, including the steps of: designing a plurality of paths, wherein each path includes a plurality of elements; determining a specific path of the plurality of paths by performing a timing analysis; replacing the specific element in the specific path with the configurable logic gate array cell; and selectively changing a connection mode of a metal layer to make the configurable logic gate array cell have another function. The timing analysis includes: for each path of the plurality of paths, determining whether a chip area meets a constraint condition and whether a timing violation will occur when a specific element in each path is replaced with a configurable logic gate array cell; and when both conditions are met, determining that path as the specific path.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Inventor: Shih-Hsiang Tai
  • Patent number: 10635850
    Abstract: The present invention provides a circuit design method, wherein the circuit design comprises the steps of: designing a plurality of paths, wherein each path comprises a plurality of elements; determining if the paths have enough timing margin to determine at least one specific path; and replacing at least one specific element within the specific path by a configurable gate array cell, wherein a function of the configurable gate array cell is the same as a function of the specific element.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: April 28, 2020
    Assignee: Silicon Motion, Inc.
    Inventor: Shih-Hsiang Tai
  • Publication number: 20190205497
    Abstract: The present invention provides a circuit design method, wherein the circuit design comprises the steps of: designing a plurality of paths, wherein each path comprises a plurality of elements; determining if the paths have enough timing margin to determine at least one specific path; and replacing at least one specific element within the specific path by a configurable gate array cell, wherein a function of the configurable gate array cell is the same as a function of the specific element.
    Type: Application
    Filed: July 30, 2018
    Publication date: July 4, 2019
    Inventor: Shih-Hsiang Tai