Patents by Inventor Thomas Dyer Bonifield

Thomas Dyer Bonifield 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: 11495553
    Abstract: A packaged multichip device includes a first IC die with an isolation capacitor utilizing a top metal layer as its top plate and a lower metal layer as its bottom plate. A second IC die has a second isolation capacitor utilizing its top metal layer as its top plate and a lower metal layer as its bottom plate. A first bondwire end is coupled to one top plate and a second bondwire end is coupled to the other top plate. The second bondwire end includes a stitch bond including a wire approach angle not normal to the top plate it is bonded to and is placed so that the stitch bond's center is positioned at least 5% further from an edge of this top plate on a bondwire crossover side compared to a distance of the stitch bond's center from the side opposite the bondwire crossover side.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: November 8, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Thomas Dyer Bonifield, Jeffrey Alan West, Byron Lovell Williams
  • Patent number: 11476189
    Abstract: An electronic device has a substrate and first and second metallization levels with a resonant circuit. The first metallization level has a first dielectric layer on a side of the substrate, and a first metal layer on the first dielectric layer. The second metallization level has a second dielectric layer on the first dielectric layer and the first metal layer, and a second metal layer on the second dielectric layer. The electronic device includes a first plate in the first metal layer, and a second plate spaced apart from the first plate in the second metal layer to form a capacitor. The electronic device includes a winding in one of the first and second metal layers and coupled to one of the first and second plates in a resonant circuit.
    Type: Grant
    Filed: December 12, 2020
    Date of Patent: October 18, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Klaas De Haan, Mikhail Valeryevich Ivanov, Tobias Bernhard Fritz, Swaminathan Sankaran, Thomas Dyer Bonifield
  • Publication number: 20220244320
    Abstract: A method includes applying an AC test voltage signal to a terminal of an electronic device, the AC test voltage signal having a test frequency of 100 Hz or more, sensing a current signal of the electronic device during application of the AC test voltage signal, and identifying the electronic device as passing an isolation test in response to the current signal being less than a current threshold. After identifying the electronic device as passing the isolation test, the method includes applying a second AC test voltage signal to the terminal of the electronic device, the second AC test voltage signal having a second test frequency of 100 Hz or more, measuring a partial discharge of the electronic device during application of the second AC test voltage signal, and identifying the electronic device as passing a partial discharge test in response to the partial discharge being less than a threshold.
    Type: Application
    Filed: October 27, 2021
    Publication date: August 4, 2022
    Inventor: Thomas Dyer Bonifield
  • Publication number: 20220209750
    Abstract: An integrated circuit includes a substrate, a reference contact coupled to the substrate, a capacitor over the substrate, and a substrate element. The capacitor includes a first conductive element having an associated parasitic capacitance and a second conductive element electrically isolated from the first conductive element. The substrate element is coupled to the first conductive element by the parasitic capacitance and coupled to the reference contact. The substrate element includes a conductive doped region in the substrate and aligned with the first conductive element and the reference contact.
    Type: Application
    Filed: April 6, 2021
    Publication date: June 30, 2022
    Inventors: Swaminathan Sankaran, Brad Kramer, Thomas Dyer Bonifield
  • Publication number: 20220189873
    Abstract: An electronic device has a substrate and first and second metallization levels with a resonant circuit. The first metallization level has a first dielectric layer on a side of the substrate, and a first metal layer on the first dielectric layer. The second metallization level has a second dielectric layer on the first dielectric layer and the first metal layer, and a second metal layer on the second dielectric layer. The electronic device includes a first plate in the first metal layer, and a second plate spaced apart from the first plate in the second metal layer to form a capacitor. The electronic device includes a winding in one of the first and second metal layers and coupled to one of the first and second plates in a resonant circuit.
    Type: Application
    Filed: December 12, 2020
    Publication date: June 16, 2022
    Inventors: Klaas De Haan, Mikhail Valeryevich Ivanov, Tobias Bernhard Fritz, Swaminathan Sankaran, Thomas Dyer Bonifield
  • Publication number: 20220181240
    Abstract: An isolator device includes a laminate die having a dielectric laminate material with a metal laminate layer on one side of the dielectric laminate material, the metal laminate layer being a patterned layer providing at least a first plate, including a dielectric layer over the first plate that includes an aperture exposing a portion of the first plate. An integrated circuit (IC) including a substrate having a semiconductor surface includes circuitry including a transmitter and/or a receiver, the IC including a top metal layer providing at least a second plate coupled to a node in the circuitry, with at least one passivation layer on the top metal layer. A non-conductive die attach (NCDA) material for attaching a side of the dielectric laminate material is opposite the metal laminate layer to the IC so that the first plate is at least partially over the second plate to provide a capacitor.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 9, 2022
    Inventor: Thomas Dyer Bonifield
  • Publication number: 20220148912
    Abstract: In described examples of an integrated circuit (IC) there is a substrate of semiconductor material having a first region with a first transistor formed therein and a second region with a second transistor formed therein. An isolation trench extends through the substrate and separates the first region of the substrate from the second region of the substrate. An interconnect region having layers of dielectric is disposed on a top surface of the substrate. A dielectric polymer is disposed in the isolation trench and in a layer over the backside surface of the substrate. An edge of the polymer layer is separated from the perimeter edge of the substrate by a space.
    Type: Application
    Filed: January 25, 2022
    Publication date: May 12, 2022
    Inventors: Scott Robert Summerfelt, Thomas Dyer Bonifield, Sreeram Subramanyam Nasum, Peter Smeys, Benjamin Stassen Cook
  • Patent number: 11270930
    Abstract: An isolator device includes a laminate die having a dielectric laminate material with a metal laminate layer on one side of the dielectric laminate material, the metal laminate layer being a patterned layer providing at least a first plate, including a dielectric layer over the first plate that includes an aperture exposing a portion of the first plate. An integrated circuit (IC) including a substrate having a semiconductor surface includes circuitry including a transmitter and/or a receiver, the IC including a top metal layer providing at least a second plate coupled to a node in the circuitry, with at least one passivation layer on the top metal layer. A non-conductive die attach (NCDA) material for attaching a side of the dielectric laminate material is opposite the metal laminate layer to the IC so that the first plate is at least partially over the second plate to provide a capacitor.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 8, 2022
    Assignee: Texas Instruments Incorporated
    Inventor: Thomas Dyer Bonifield
  • Publication number: 20220069066
    Abstract: A galvanic isolation capacitor device includes a semiconductor substrate and a PMD layer over the semiconductor substrate. The PMD layer has a first thickness. A lower metal plate is over the PMD layer and an ILD layer is on the lower metal plate; the ILD layer has a second thickness. A ratio of the first thickness to the second thickness is between about 1 and 1.55 inclusive. A first upper metal plate over the ILD layer has a first area and a second upper metal plate over the ILD layer has a second area; a ratio of the first area to the second area is greater than about 5. The galvanic isolation capacitor device can be part of a multi-chip module.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 3, 2022
    Inventors: Thomas Dyer Bonifield, Jeffrey Alan West, Byron Lovell Williams, Elizabeth Costner Stewart
  • Patent number: 11251138
    Abstract: In described examples of an integrated circuit (IC) there is a substrate of semiconductor material having a first region with a first transistor formed therein and a second region with a second transistor formed therein. An isolation trench extends through the substrate and separates the first region of the substrate from the second region of the substrate. An interconnect region having layers of dielectric is disposed on a top surface of the substrate. A dielectric polymer is disposed in the isolation trench and in a layer over the backside surface of the substrate. An edge of the polymer layer is separated from the perimeter edge of the substrate by a space.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: February 15, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Scott Robert Summerfelt, Thomas Dyer Bonifield, Sreeram Subramanyam Nasum, Peter Smeys, Benjamin Stassen Cook
  • Patent number: 11222945
    Abstract: Described examples include a microelectronic device with a high voltage capacitor that includes a high voltage node, a low voltage node, a first dielectric disposed between the low voltage node and the high voltage node, a first conductive plate disposed between the first dielectric and the high voltage node, and a second dielectric disposed between the first conductive plate and the high voltage node.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: January 11, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Thomas Dyer Bonifield, Kannan Soundarapandian
  • Patent number: 11139227
    Abstract: An isolator device includes a laminate die having a dielectric laminate material with a metal laminate layer on one side of the dielectric laminate material, the metal laminate layer being a patterned layer providing at least a first plate, including a dielectric layer over the first plate that includes an aperture exposing a portion of the first plate. An integrated circuit (IC) including a substrate having a semiconductor surface includes circuitry including a transmitter and/or a receiver, the IC including a top metal layer providing at least a second plate coupled to a node in the circuitry, with at least one passivation layer on the top metal layer. A non-conductive die attach (NCDA) material for attaching a side of the dielectric laminate material is opposite the metal laminate layer to the IC so that the first plate is at least partially over the second plate to provide a capacitor.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: October 5, 2021
    Assignee: Texas Instruments Incorporated
    Inventor: Thomas Dyer Bonifield
  • Publication number: 20210272886
    Abstract: An isolator device includes a laminate die having a dielectric laminate material with a metal laminate layer on one side of the dielectric laminate material, the metal laminate layer being a patterned layer providing at least a first plate, including a dielectric layer over the first plate that includes an aperture exposing a portion of the first plate. An integrated circuit (IC) including a substrate having a semiconductor surface includes circuitry including a transmitter and/or a receiver, the IC including a top metal layer providing at least a second plate coupled to a node in the circuitry, with at least one passivation layer on the top metal layer. A non-conductive die attach (NCDA) material for attaching a side of the dielectric laminate material is opposite the metal laminate layer to the IC so that the first plate is at least partially over the second plate to provide a capacitor.
    Type: Application
    Filed: March 2, 2020
    Publication date: September 2, 2021
    Inventor: Thomas Dyer Bonifield
  • Patent number: 11024576
    Abstract: A semiconductor package includes a leadframe including a sensor coil between sensor coil leads and further including a plurality of die leads physically and electrically separated from the sensor coil, and a semiconductor die over the leadframe with die contacts electrically connected to the die leads. The semiconductor die includes a sensor operable to detect magnetic fields created by electrical current through the sensor coil, the semiconductor die operable to output a signal representative of the detected magnetic fields via the die leads. The semiconductor package further includes a dielectric underfill filling a gap between the sensor coil and the semiconductor die, and a dielectric mold compound covering the sensor coil and the dielectric underfill and at least partially covering the semiconductor die and the die leads.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: June 1, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jeffrey Alan West, Byron Lovell Williams, Thomas Dyer Bonifield
  • Patent number: 10998278
    Abstract: A microelectronic device contains a high voltage component having an upper plate and a lower plate. The upper plate is isolated from the lower plate by a main dielectric between the upper plate and low voltage elements at a surface of the substrate of the microelectronic device. A lower-bandgap dielectric layer is disposed between the upper plate and the main dielectric. The lower-bandgap dielectric layer contains at least one sub-layer of silicon nitride having a refractive index between 2.11 and 2.23. The lower-bandgap dielectric layer extends beyond the upper plate continuously around the upper plate. The lower-bandgap dielectric layer has an isolation break surrounding the upper plate at a distance of at least twice the thickness of the lower-bandgap dielectric layer from the upper plate.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: May 4, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jeffrey Alan West, Thomas Dyer Bonifield, Yoshihiro Takei, Mitsuhiro Sugimoto
  • Publication number: 20210020564
    Abstract: An integrated circuit includes a semiconductor substrate and a plurality of dielectric layers over the semiconductor substrate, including a top dielectric layer. A metal plate or metal coil is located over the top dielectric layer; a metal ring is located over the top dielectric layer and substantially surrounds the metal plate or metal coil. A protective overcoat overlies the metal ring and overlies the metal plate or metal coil. A trench opening is formed through the protective overcoat, with the trench opening exposing the top dielectric layer between the metal plate/coil and the metal ring, the trench opening substantially surrounding the metal plate or metal coil.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 21, 2021
    Inventors: Jeffrey Alan West, Thomas Dyer Bonifield
  • Publication number: 20200395342
    Abstract: An integrated circuit (IC) package includes a first die with a first surface overlaying a substrate. The first die includes a first metal pad at a second surface opposing the first surface. The IC package also includes a dielectric layer having a first surface contacting the second surface of the first die. The IC package further includes a second die with a surface that contacts a second surface of the dielectric layer. The second die includes a second metal pad aligned with the first metal pad of the first die. A plane perpendicular to the second surface of the first die intersects the first metal pad and the second metal pad.
    Type: Application
    Filed: June 10, 2020
    Publication date: December 17, 2020
    Inventor: THOMAS DYER BONIFIELD
  • Publication number: 20200381342
    Abstract: In examples, a semiconductor package comprises a first conductive terminal; a second conductive terminal; a conductive pathway coupling the first and second conductive terminals, the conductive pathway configured to generate a magnetic field; a semiconductor die including a circuit configured to detect the magnetic field; and first and second polyimide layers positioned between the conductive pathway and the semiconductor die.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: YongSeok PARK, Makarand Ramkrishna KULKARNI, Ricky Alan JACKSON, Byron Lovell WILLIAMS, Thomas Dyer BONIFIELD
  • Publication number: 20200312794
    Abstract: A microelectronic device contains a high voltage component having an upper plate and a lower plate. The upper plate is isolated from the lower plate by a main dielectric between the upper plate and low voltage elements at a surface of the substrate of the microelectronic device. A lower-bandgap dielectric layer is disposed between the upper plate and the main dielectric. The lower-bandgap dielectric layer contains at least one sub-layer of silicon nitride having a refractive index between 2.11 and 2.23. The lower-bandgap dielectric layer extends beyond the upper plate continuously around the upper plate. The lower-bandgap dielectric layer has an isolation break surrounding the upper plate at a distance of at least twice the thickness of the lower-bandgap dielectric layer from the upper plate.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Inventors: Jeffrey Alan West, Thomas Dyer Bonifield, Yoshihiro Takei, Mitsuhiro Sugimoto
  • Patent number: 10705159
    Abstract: An integrated fluxgate device has a magnetic core disposed over a semiconductor substrate. A first winding is disposed in a first metallization level above and a second metallization level below the magnetic core, and is configured to generate a first magnetic field in the magnetic core. A second winding is disposed in the first and second metallization levels and is configured to generate a second magnetic field in the magnetic core. A third winding is disposed in the first and second metallization levels and is configured to sense a magnetic field in the magnetic core that is the net of the first and second magnetic fields.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 7, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Erika Lynn Mazotti, Dok Won Lee, William David French, Byron J R Shulver, Thomas Dyer Bonifield, Ricky Alan Jackson, Neil Gibson