Patents by Inventor Ming-Fang Lai

Ming-Fang Lai 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: 10170907
    Abstract: The present disclosure relates to an electrostatic discharge (ESD) protection circuit including a dynamic field plate bias circuit, and associated methods. In some embodiments, the ESD protection circuit includes a bipolar junction transistor (BJT) based ESD protection circuit including a field plate configured to increase a breakdown voltage of the BJT based ESD protection circuit. The ESD protection circuit also includes a dynamic field plate bias circuit coupled to the field plate of the BJT based ESD protection circuit. The dynamic field plate bias circuit is configured to provide the field plate a field plate bias at transient opposite to a field plate bias at a normal operation. The transient bias reduces a trigger voltage of the BJT based ESD protection circuit and increases a shunt current of the BJT based ESD protection circuit during the ESD event. Thereby, ESD protection reliability is improved.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: January 1, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Ming-Fang Lai
  • Patent number: 10043793
    Abstract: The present disclosure relates to a semiconductor device. The semiconductor device includes a substrate, a first doping region, a second doping region, a third doping region, a first transient block unit and a second transient block unit. The first doping region is in the substrate. The second doping region is in the first doping region. The third doping region is in the first doping region. The first transient block unit is electrically connected to the second doping region. The second transient block unit is electrically connected between the third doping region and the first transient block unit.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: August 7, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventor: Ming-Fang Lai
  • Publication number: 20170346278
    Abstract: The present disclosure relates to an electrostatic discharge (ESD) protection circuit including a dynamic field plate bias circuit, and associated methods. In some embodiments, the ESD protection circuit includes a bipolar junction transistor (BJT) based ESD protection circuit including a field plate configured to increase a breakdown voltage of the BJT based ESD protection circuit. The ESD protection circuit also includes a dynamic field plate bias circuit coupled to the field plate of the BJT based ESD protection circuit. The dynamic field plate bias circuit is configured to provide the field plate a field plate bias at transient opposite to a field plate bias at a normal operation. The transient bias reduces a trigger voltage of the BJT based ESD protection circuit and increases a shunt current of the BJT based ESD protection circuit during the ESD event. Thereby, ESD protection reliability is improved.
    Type: Application
    Filed: August 22, 2016
    Publication date: November 30, 2017
    Inventor: Ming-Fang Lai
  • Publication number: 20170221877
    Abstract: The present disclosure relates to a semiconductor device. The semiconductor device includes a substrate, a first doping region, a second doping region, a third doping region, a first transient block unit and a second transient block unit. The first doping region is in the substrate. The second doping region is in the first doping region. The third doping region is in the first doping region. The first transient block unit is electrically connected to the second doping region. The second transient block unit is electrically connected between the third doping region and the first transient block unit.
    Type: Application
    Filed: February 3, 2016
    Publication date: August 3, 2017
    Inventor: MING-FANG LAI
  • Patent number: 8653641
    Abstract: An integrated circuit device includes: a first chip including a first substrate and a main circuit formed on said first chip; a second chip stacked on the first substrate and including a second substrate that is independent from the first substrate, and a protective circuit for protecting the main circuit; and a conductive channel unit extending from the protective circuit and electrically connected to the main circuit.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 18, 2014
    Assignee: National Chiao Tung University
    Inventors: Kuan-Neng Chen, Ming-Fang Lai, Hung-Ming Chen
  • Patent number: 8482082
    Abstract: An electrostatic discharge (ESD) protection device includes a first transistor and a second transistor. The first transistor includes a first bulk electrode, a first electrode and a second electrode. The first bulk electrode and the first electrode form a first parasitic diode. The first bulk electrode and the second electrode form a second parasitic diode. The second transistor includes a second bulk electrode, a third electrode and a fourth electrode. The second bulk electrode and the third electrode form a third parasitic diode. The second bulk electrode and the fourth electrode form a fourth parasitic diode. The first bulk electrode is connected to the third electrode, and the second bulk electrode is connected to the first electrode.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 9, 2013
    Assignee: Nuvoton Technology Corporation
    Inventor: Ming-Fang Lai
  • Publication number: 20130169355
    Abstract: An integrated circuit device includes: a first chip including a first substrate and a main circuit formed on said first chip; a second chip stacked on the first substrate and including a second substrate that is independent from the first substrate, and a protective circuit for protecting the main circuit; and a conductive channel unit extending from the protective circuit and electrically connected to the main circuit.
    Type: Application
    Filed: September 13, 2012
    Publication date: July 4, 2013
    Inventors: Kuan-Neng Chen, Ming-Fang Lai, Hung-Ming Chen
  • Publication number: 20130075829
    Abstract: An electrostatic discharge (ESD) protection device includes a first transistor and a second transistor. The first transistor includes a first bulk electrode, a first electrode and a second electrode. The first bulk electrode and the first electrode form a first parasitic diode. The first bulk electrode and the second electrode form a second parasitic diode. The second transistor includes a second bulk electrode, a third electrode and a fourth electrode. The second bulk electrode and the third electrode form a third parasitic diode. The second bulk electrode and the fourth electrode form a fourth parasitic diode. The first bulk electrode is connected to the third electrode, and the second bulk electrode is connected to the first electrode.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Ming-Fang LAI
  • Publication number: 20120153437
    Abstract: An electrostatic discharge (ESD) protection structure for a 3D IC is provided. The ESD protection structure includes a first active layer, a through-silicon via (TSV) device and a second active layer. The TSV is disposed in the first active layer, and the second active layer is stacked with the first active layer. The second active layer includes a substrate and an ESD protection device, wherein the ESD protection device having a doping area embedded in the substrate, and the ESD protection device electrically connects the TSV device.
    Type: Application
    Filed: March 5, 2011
    Publication date: June 21, 2012
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Kuan-Neng Chen, Ming-Fang Lai, Hung-Ming Chen
  • Patent number: 8194370
    Abstract: An electrostatic discharge (ESD) protection circuit is provided. The ESD protection circuit includes a first rail, a second rail, a first transistor and a resistance unit. The drain of the first transistor is electrically coupled to the first rail, and the source and gate of the first transistor are electrically coupled to the second rail. The resistance unit is electrically coupled between a body of the first transistor and the second rail. When ESD occurs, the resistance unit provides a resistance between the body of the first transistor and the second rail. An ESD protection device is also provided.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: June 5, 2012
    Assignee: Nuvoton Technology Corporation
    Inventors: Ming-Fang Lai, Chung-Ti Hsu
  • Publication number: 20100128401
    Abstract: An electrostatic discharge (ESD) protection circuit is provided. The ESD protection circuit includes a first rail, a second rail, a first transistor and a resistance unit. The drain of the first transistor is electrically coupled to the first rail, and the source and gate of the first transistor are electrically coupled to the second rail. The resistance unit is electrically coupled between a body of the first transistor and the second rail. When ESD occurs, the resistance unit provides a resistance between the body of the first transistor and the second rail. An ESD protection device is also provided.
    Type: Application
    Filed: March 4, 2009
    Publication date: May 27, 2010
    Applicant: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Ming-Fang Lai, Chung-Ti Hsu