Patents by Inventor Yigong Wang

Yigong Wang 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: 10297605
    Abstract: Systems, methods, and techniques described here provide for a hybrid electrically erasable programmable read-only memory (EEPROM) that functions as both a single polysilicon EEPROM and a double polysilicon EEPROM. The two-in-one hybrid EEPROM can be programmed and/or erased as a single polysilicon EEPROM and/or as a double polysilicon EEPROM. The hybrid EEPROM memory cell includes a programmable capacitor disposed on a substrate. The programmable capacitor includes a floating gate forming a first polysilicon layer, an oxide-nitride-oxide (ONO) layer having disposed over a first surface of the floating gate, and a control gate forming a second polysilicon layer with the control gate formed over a first surface of the ONO layer to form a hybrid EEPROM having a single polysilicon layer and a double polysilicon EEPROM. The single polysilicon EEPROM includes the first polysilicon layer and the double polysilicon EEPROM includes the first and second polysilicon layers.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 21, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventor: Yigong Wang
  • Patent number: 10205093
    Abstract: A vertical Hall Effect element includes a low voltage P-well region disposed at a position between pickups of a vertical Hall Effect element to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: February 12, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventor: Yigong Wang
  • Publication number: 20180366479
    Abstract: Systems, methods, and techniques described here provide for a hybrid electrically erasable programmable read-only memory (EEPROM) that functions as both a single polysilicon EEPROM and a double polysilicon EEPROM. The two-in-one hybrid EEPROM can be programmed and/or erased as a single polysilicon EEPROM and/or as a double polysilicon EEPROM. The hybrid EEPROM memory cell includes a programmable capacitor disposed on a substrate. The programmable capacitor includes a floating gate forming a first polysilicon layer, an oxide-nitride-oxide (ONO) layer having disposed over a first surface of the floating gate, and a control gate forming a second polysilicon layer with the control gate formed over a first surface of the ONO layer to form a hybrid EEPROM having a single polysilicon layer and a double polysilicon EEPROM. The single polysilicon EEPROM includes the first polysilicon layer and the double polysilicon EEPROM includes the first and second polysilicon layers.
    Type: Application
    Filed: March 6, 2018
    Publication date: December 20, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventor: Yigong Wang
  • Patent number: 10038001
    Abstract: Systems, methods, and techniques described here provide for a hybrid electrically erasable programmable read-only memory (EEPROM) that functions as both a single polysilicon EEPROM and a double polysilicon EEPROM. The two-in-one hybrid EEPROM can be programmed and/or erased as a single polysilicon EEPROM and/or as a double polysilicon EEPROM. The hybrid EEPROM memory cell includes a programmable capacitor disposed on a substrate. The programmable capacitor includes a floating gate forming a first polysilicon layer, an oxide-nitride-oxide (ONO) layer having disposed over a first surface of the floating gate, and a control gate forming a second polysilicon layer with the control gate formed over a first surface of the ONO layer to form a hybrid EEPROM having a single polysilicon layer and a double polysilicon EEPROM. The single polysilicon EEPROM includes the first polysilicon layer and the double polysilicon EEPROM includes the first and second polysilicon layers.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 31, 2018
    Assignee: Allegro Microsystems, LLC
    Inventor: Yigong Wang
  • Publication number: 20170084831
    Abstract: A vertical Hall Effect element includes a low voltage P-well region disposed at a position between pickups of a vertical Hall Effect element to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventor: Yigong Wang
  • Patent number: 9548443
    Abstract: A vertical Hall Effect element includes a low voltage P-well region disposed at a position between pickups of a vertical Hall Effect element to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: January 17, 2017
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventor: Yigong Wang
  • Patent number: 9184012
    Abstract: A fuse formed as part of an integrated circuit has cavities disposed to the sides of the fuse to provide more reliable operation with less chance of re-connection. A method of providing the fuse is also described.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: November 10, 2015
    Assignee: Allegro Microsystems, LLC
    Inventor: Yigong Wang
  • Patent number: 9099638
    Abstract: A vertical Hall Effect element includes one or more of: a low voltage P-well region disposed at a position between pickups of the vertical Hall Effect element, Light-N regions disposed under the pickups, a pre-epi implant region, or two epi regions to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 4, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Yigong Wang, Richard B. Cooper
  • Publication number: 20140264667
    Abstract: A vertical Hall Effect element includes one or more of: a low voltage P-well region disposed at a position between pickups of the vertical Hall Effect element, Light-N regions disposed under the pickups, a pre-epi implant region, or two epi regions to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Allegro Microsystems, Inc.
    Inventors: Yigong Wang, Richard B. Cooper
  • Publication number: 20140210023
    Abstract: A vertical Hall Effect element includes a low voltage P-well region disposed at a position between pickups of a vertical Hall Effect element to result in an improved sensitivity of the vertical Hall Effect element. A method results in the vertical Hall Effect element having the improved sensitivity.
    Type: Application
    Filed: January 29, 2013
    Publication date: July 31, 2014
    Inventor: Yigong Wang
  • Publication number: 20140167906
    Abstract: A fuse formed as part of an integrated circuit has cavities disposed to the sides of the fuse to provide more reliable operation with less chance of re-connection. A method of providing the fuse is also described.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Inventor: Yigong Wang
  • Publication number: 20130032909
    Abstract: A Hall effect element includes a Hall plate having geometric features selected to result in a highest ratio of a sensitivity divided by a plate resistance. The resulting shape is a so-called “wide-cross” shape.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 7, 2013
    Applicant: ALLEGRO MICROSYSTEMS, INC.
    Inventor: Yigong Wang
  • Patent number: 8357983
    Abstract: A Hall effect element includes a Hall plate having geometric features selected to result in a highest ratio of a sensitivity divided by a plate resistance. The resulting shape is a so-called “wide-cross” shape.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: January 22, 2013
    Assignee: Allegro Microsystems, Inc.
    Inventor: Yigong Wang
  • Patent number: 7936029
    Abstract: A Hall effect element includes a Hall plate with an outer perimeter. The outer perimeter includes four corner regions, each tangential to two sides of a square outer boundary associated with the Hall plate, and each extending along two sides of the square outer boundary by a corner extent. The outer perimeter also includes four indented regions. Each one of the four indented regions deviates inward toward a center of the Hall plate. The Hall plate further includes a square core region centered with and smaller than the square outer boundary. A portion of each one of the four indented regions is tangential to a respective side of the square core region. Each side of the square core region has a length greater than twice the corner extent and less than a length of each side of the square outer boundary.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: May 3, 2011
    Assignee: Allegro Microsystems, Inc.
    Inventor: Yigong Wang
  • Publication number: 20100207222
    Abstract: A Hall effect element includes a Hall plate with an outer perimeter. The outer perimeter includes four corner regions, each tangential to two sides of a square outer boundary associated with the Hall plate, and each extending along two sides of the square outer boundary by a corner extent. The outer perimeter also includes four indented regions. Each one of the four indented regions deviates inward toward a center of the Hall plate. The Hall plate further includes a square core region centered with and smaller than the square outer boundary. A portion of each one of the four indented regions is tangential to a respective side of the square core region. Each side of the square core region has a length greater than twice the corner extent and less than a length of each side of the square outer boundary.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 19, 2010
    Inventor: Yigong Wang
  • Patent number: 7633115
    Abstract: Semiconductor structures are adapted to form an electrically erasable programmable read only memory (EEPROM) cell having a long retention life, and/or a reduced programming voltage, and/or a reduced semiconductor real estate, and/or a reduced number of semiconductor fabrication steps.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: December 15, 2009
    Assignee: Allegro Microsystems, Inc.
    Inventor: Yigong Wang
  • Publication number: 20080090365
    Abstract: Semiconductor structures are adapted to form an electrically erasable programmable read only memory (EEPROM) cell having a long retention life, and/or a reduced programming voltage, and/or a reduced semiconductor real estate, and/or a reduced number of semiconductor fabrication steps.
    Type: Application
    Filed: October 17, 2006
    Publication date: April 17, 2008
    Inventor: Yigong Wang