Patents by Inventor Wen-Chih Chiang

Wen-Chih Chiang 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: 10297661
    Abstract: The present disclosure relates to a high voltage resistor device that is able to receive high voltages using a small footprint, and an associated method of fabrication. In some embodiments, the high voltage resistor device has a substrate including a first region with a first doping type, and a drift region arranged within the substrate over the first region and having a second doping type. A body region having the first doping type laterally contacts the drift region. A drain region having the second doping type is arranged within the drift region, and an isolation structure is over the substrate between the drain region and the body region. A resistor structure is over the isolation structure and has a high-voltage terminal coupled to the drain region and a low-voltage terminal coupled to a gate structure over the isolation structure.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: May 21, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yi-Cheng Chiu, Wen-Chih Chiang, Chun Lin Tsai, Kuo-Ming Wu, Shiuan-Jeng Lin, Yi-Min Chen, Hung-Chou Lin, Karthick Murukesan
  • Publication number: 20190131296
    Abstract: Various embodiments of the present application are directed towards an integrated circuit (IC) in which a bootstrap metal-oxide-semiconductor (MOS) device is integrated with a high voltage metal-oxide-semiconductor (HVMOS) device and a high voltage junction termination (HVJT) device. In some embodiments, a drift well is in the semiconductor substrate. The drift well has a first doping type and has a ring-shaped top layout. A first switching device is on the drift well. A second switching device is on the semiconductor substrate, at an indent in a sidewall the drift well. A peripheral well is in the semiconductor substrate and has a second doping type opposite the first doping type. The peripheral well surrounds the drift well, the first switching device, and the second switching device, and further separates the second switching device from the drift well and the first switching device.
    Type: Application
    Filed: September 12, 2018
    Publication date: May 2, 2019
    Inventors: Karthick Murukesan, Wen-Chih Chiang, Chiu-Hua Chung, Chun Lin Tsai, Kuo-Ming Wu, Shiuan-Jeng Lin, Tien Sheng Lin, Yi-Min Chen, Hung-Chou Lin, Yi-Cheng Chiu
  • Publication number: 20190109189
    Abstract: The present disclosure, in some embodiments, relates to a high voltage resistor device. The device includes a buried well region disposed within a substrate and having a first doping type. A drift region is disposed within the substrate and contacts the buried well region. The drift region has the first doping type. A body region is disposed within the substrate and has a second doping type. The body region laterally contacts the drift region and vertically contacts the buried well region. An isolation structure is over the drift region and a resistor structure is over the isolation structure.
    Type: Application
    Filed: November 26, 2018
    Publication date: April 11, 2019
    Inventors: Yi-Cheng Chiu, Wen-Chih Chiang, Chun Lin Tsai, Kuo-Ming Wu, Shiuan-Jeng Lin, Yi-Min Chen, Hung-Chou Lin, Karthick Murukesan
  • Publication number: 20190096988
    Abstract: Various embodiments of the present application are directed towards an integrated circuit (IC) in which a high voltage metal-oxide-semiconductor (HVMOS) device is integrated with a high voltage junction termination (HVJT) device. In some embodiments, a first drift well and a second drift well are in a substrate. The first and second drift wells border in a ring-shaped pattern and have a first doping type. A peripheral well is in the substrate and has a second doping type opposite the first doping type. The peripheral well surrounds and separates the first and second drift wells. A body well is in the substrate and has the second doping type. Further, the body well overlies the first drift well and is spaced from the peripheral well by the first drift well. A gate electrode overlies a junction between the first drift well and the body well.
    Type: Application
    Filed: April 27, 2018
    Publication date: March 28, 2019
    Inventors: Karthick Murukesan, Wen-Chih Chiang, Chun Lin Tsai, Ker-Hsiao Huo, Kuo-Ming Wu, Po-Chih Chen, Ru-Yi Su, Shiuan-Jeng Lin, Yi-Min Chen, Hung-Chou Lin, Yi-Cheng Chiu
  • Publication number: 20190006460
    Abstract: The present disclosure relates to a high voltage resistor device that is able to receive high voltages using a small footprint, and an associated method of fabrication. In some embodiments, the high voltage resistor device has a substrate including a first region with a first doping type, and a drift region arranged within the substrate over the first region and having a second doping type. A body region having the first doping type laterally contacts the drift region. A drain region having the second doping type is arranged within the drift region, and an isolation structure is over the substrate between the drain region and the body region. A resistor structure is over the isolation structure and has a high-voltage terminal coupled to the drain region and a low-voltage terminal coupled to a gate structure over the isolation structure.
    Type: Application
    Filed: September 1, 2017
    Publication date: January 3, 2019
    Inventors: Yi-Cheng Chiu, Wen-Chih Chiang, Chun Lin Tsai, Kuo-Ming Wu, Shiuan-Jeng Lin, Yi-Min Chen, Hung-Chou Lin, Karthick Murukesan