Patents by Inventor Dirk Priefert

Dirk Priefert 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: 20250113567
    Abstract: A lateral high voltage semiconductor device includes a semiconductor substrate with a frontside and a semiconductor element. The semiconductor element includes: a first semiconductor region of a first conductivity type formed within the semiconductor substrate; a second semiconductor region formed within the semiconductor substrate and spaced apart from the first semiconductor region in a first lateral direction parallel to the frontside; and an extension region adjoining the second semiconductor region. The semiconductor device is configured to control a load current between the first and second semiconductor regions. The extension region extends along the frontside of the semiconductor substrate and includes at least one mesa protruding at the frontside of the semiconductor substrate.
    Type: Application
    Filed: September 26, 2024
    Publication date: April 3, 2025
    Inventors: Lars Müller-Meskamp, Ralf Rudolf, Franz Hirler, Fabian Geisenhof, Tom Peterhänsel, Annett Winzer, Dirk Priefert, Thomas Künzig, Felix Simon Winterer, Dirk Manger
  • Publication number: 20250081484
    Abstract: A lateral semiconductor device includes: a semiconductor substrate; a first insulator layer formed on the semiconductor substrate; and a semiconductor layer formed on the first insulator layer opposite to the semiconductor substrate. The semiconductor layer includes a first region of a first conductivity type, a second region of a second conductivity type opposite to the first conductivity type, and an intermediate region interposed between the first region and the second region and defining a first lateral distance between the first region and the second region. The intermediate region has a lower doping concentration than the first region and the second region. A doping concentration of the first region at an interface to the intermediate region and a doping concentration of the second region at an interface to the intermediate region both exceed 1×1018 cm?3. The first lateral distance is at most 800 nm.
    Type: Application
    Filed: September 5, 2024
    Publication date: March 6, 2025
    Inventors: Dirk Priefert, Andrei Sidelnicov, Christian Schippel
  • Publication number: 20240429288
    Abstract: A high voltage semiconductor device includes a substrate having a background doping of a first conductivity type. The substrate includes doped shielding regions of a complementary second conductivity type formed along a first substrate surface. An insulator layer is formed on the first substrate surface. A semiconductor layer is formed on the insulator layer opposite the substrate. A first interlayer dielectric is formed on the semiconductor layer. A first metal layer including laterally separated first field plate elements is formed on first portions of the first interlayer dielectric in a high voltage termination region. A second interlayer dielectric is formed on the first metal layer and on second portions of the first interlayer dielectric between the first field plate elements.
    Type: Application
    Filed: June 21, 2024
    Publication date: December 26, 2024
    Inventors: Felix Simon Winterer, Christian Schippel, Dirk Priefert, Andrei Sidelnicov
  • Publication number: 20240363700
    Abstract: A semiconductor device includes: a silicon layer having an electrically insulated backside and a thickness in a range of 10 ?m to 200 ?m between a frontside of the silicon layer and the electrically insulated backside; a high voltage region and a low voltage region formed in the silicon layer and laterally spaced apart from one another; and a first field plate structure extending from the frontside into the silicon layer. The first field plate structure includes a field plate laterally separated from the silicon layer by a dielectric material and/or a pn junction.
    Type: Application
    Filed: April 28, 2023
    Publication date: October 31, 2024
    Inventors: Lars Mueller-Meskamp, Ralf Rudolf, Anton Mauder, Annett Winzer, Dirk Priefert, Christian Schippel, Thomas Kuenzig
  • Publication number: 20240304627
    Abstract: A gate driver circuit includes a low side part and a high side part. The low side part outputs a first gate drive signal between a first gate output and a first reference potential. The high side part generates a high side data signal and outputs a second gate drive signal between a second gate output and a second reference potential. A p-channel junction field effect transistor structure passes the high side data signal to the low side part.
    Type: Application
    Filed: February 29, 2024
    Publication date: September 12, 2024
    Inventors: Ralf RUDOLF, Dirk PRIEFERT, Remigiusz Viktor BOGUSZEWICZ
  • Publication number: 20240186998
    Abstract: A gate driver device includes a first field effect transistor and a first driver circuit. The first field effect transistor includes a first gate electrode and a first backgate structure. The first driver circuit supplies a first backgate drive signal to the first backgate structure.
    Type: Application
    Filed: February 12, 2024
    Publication date: June 6, 2024
    Inventors: Dirk Priefert, Matteo Albertini, Remigiusz Viktor Boguszewicz
  • Patent number: 11923839
    Abstract: A gate driver device includes a first field effect transistor and a first driver circuit. The first field effect transistor includes a first gate electrode and a first backgate structure. The first driver circuit supplies a first backgate drive signal to the first backgate structure.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: March 5, 2024
    Assignee: Infineon Technologies Austria AG
    Inventors: Dirk Priefert, Matteo Albertini, Remigiusz Viktor Boguszewicz
  • Publication number: 20230261040
    Abstract: A semiconductor device includes a substrate layer having a floating base region of a first conductivity type. A first well of a second conductivity type and the floating base region form a first pn junction. A first conductive structure is electrically connected to the first well. A barrier region of the second conductivity type and the floating base region form an auxiliary pn junction. A second conductive structure is electrically connected to the floating base region through a rectifying structure. A pull-down structure is configured to produce a voltage drop between the barrier region and the second conductive structure, when charge carriers cross the auxiliary pn junction.
    Type: Application
    Filed: February 16, 2023
    Publication date: August 17, 2023
    Inventors: Christian Schippel, Dirk Priefert, Felix Simon Winterer, Remigiusz Viktor Boguszewicz
  • Publication number: 20230238459
    Abstract: A semiconductor device includes a semiconductor layer, an electronic element and laterally separated trench isolation structures. The semiconductor layer includes an element region having an inner region, an outer region on opposite sides of the inner region, and a transition region that laterally separates the inner region and the outer region. The electronic element includes a first doped region formed in the inner region and a second doped region formed in the outer region. The trench isolation structures are formed at least in the transition region. Each trench isolation structure extends from a first surface of the semiconductor layer into the semiconductor layer.
    Type: Application
    Filed: January 20, 2023
    Publication date: July 27, 2023
    Inventors: Lars Müller-Meskamp, Ralf Rudolf, Annett Winzer, Christian Schippel, Thomas Künzig, Dirk Priefert
  • Publication number: 20230140348
    Abstract: A semiconductor device includes a semiconductor layer with an inner portion, an outer portion laterally surrounding the inner portion, and a transition portion laterally surrounding the inner portion and separating the inner portion and the outer portion. A first electric element includes a first doped region formed in the inner portion and a second doped region formed in the outer portion. The first electric element is configured to at least temporarily block a voltage applied between the first doped region and the second doped region. A trench isolation structure extends from a first surface into the semiconductor layer and segments at least one of the inner portion, the transition portion, and the outer portion.
    Type: Application
    Filed: October 21, 2022
    Publication date: May 4, 2023
    Inventors: Lars Müller-Meskamp, Ralf Rudolf, Dirk Priefert, Annett Winzer, Thomas Künzig, Christian Schippel
  • Publication number: 20230039922
    Abstract: A gate driver device includes a first field effect transistor and a first driver circuit. The first field effect transistor includes a first gate electrode and a first backgate structure. The first driver circuit supplies a first backgate drive signal to the first backgate structure.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 9, 2023
    Inventors: Dirk Priefert, Matteo Albertini, Remigiusz Viktor Boguszewicz
  • Publication number: 20170084606
    Abstract: An integrated circuit includes a semiconductor body with a first semiconductor layer, an insulation layer on the first semiconductor layer, and a second semiconductor layer on the insulation layer. The integrated circuit further includes a plurality of transistors each including a load path and a control node The load paths are connected in series, and the plurality of transistors are at least partially integrated in the second semiconductor layer. A voltage limiting structure is connected in parallel with the load path of one of the plurality of transistors, wherein the voltage limiting structure is integrated in the first semiconductor layer and is connected to the one of the plurality of transistors through two electrically conducting vias extending through the insulation layer.
    Type: Application
    Filed: September 22, 2016
    Publication date: March 23, 2017
    Inventors: Andreas Meiser, Dirk Priefert, Rolf Weis
  • Patent number: 9054618
    Abstract: A power supply circuit can be used to provide an alternating-current supply voltage to an electric motor. The power supply circuit is supplied by line power. The power supply circuit includes a inverter including at least one pair of transistor for generating a corresponding phase of the plurality of power supply phases. The inverter includes a transistor control circuit for switching the low-side transistor to its conducting state and the high-side transistor to its non-conducting state in case an excess voltage is detected at the input of the inverter.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 9, 2015
    Assignee: Infineon Technologies Austria AG
    Inventors: Wolfgang Frank, Remigiusz Viktor Boguszewicz, Dirk Priefert
  • Publication number: 20140167665
    Abstract: A power supply circuit can be used to provide an alternating-current supply voltage to an electric motor. The power supply circuit is supplied by line power. The power supply circuit includes a inverter including at least one pair of transistor for generating a corresponding phase of the plurality of power supply phases. The inverter includes a transistor control circuit for switching the low-side transistor to its conducting state and the high-side transistor to its non-conducting state in case an excess voltage is detected at the input of the inverter.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Wolfgang Frank, Remigiusz Viktor Boguszewicz, Dirk Priefert
  • Patent number: 7554157
    Abstract: An SOI semiconductor component comprises a semiconductor substrate having a basic doping, a dielectric layer arranged on the semiconductor substrate, and a semiconductor layer arranged on the dielectric layer. The semiconductor layer includes a drift zone of a first conduction type, a junction between the drift zone and a further component zone which is configured in such a way that a space charge zone is formed in the drift zone when a reverse voltage is applied to the junction, and a terminal zone adjacent to the drift zone. A first terminal electrode is connected to the further component zone, and a second terminal electrode is connected to the terminal zone. In the semiconductor substrate a first semiconductor zone is doped complementarily with respect to a basic doping of the semiconductor substrate, and the first terminal electrode is connected to the first semiconductor zone. A rectifier element is connected between the first terminal electrode and the first semiconductor zone.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: June 30, 2009
    Assignee: Infineon Technologies Austria AG
    Inventors: Uwe Wahl, Ralf Rudolf, Dirk Priefert
  • Publication number: 20070080395
    Abstract: An SOI semiconductor component comprises a semiconductor substrate having a basic doping, a dielectric layer arranged on the semiconductor substrate, and a semiconductor layer arranged on the dielectric layer. The semiconductor layer includes a drift zone of a first conduction type, a junction between the drift zone and a further component zone which is configured in such a way that a space charge zone is formed in the drift zone when a reverse voltage is applied to the junction, and a terminal zone adjacent to the drift zone. A first terminal electrode is connected to the further component zone, and a second terminal electrode is connected to the terminal zone. In the semiconductor substrate a first semiconductor zone is doped complementarily with respect to a basic doping of the semiconductor substrate, and the first terminal electrode is connected to the first semiconductor zone. A rectifier element is connected between the first terminal electrode and the first semiconductor zone.
    Type: Application
    Filed: September 26, 2006
    Publication date: April 12, 2007
    Applicant: Infineon Technologies Austria AG
    Inventors: Uwe Wahl, Ralf Rudolf, Dirk Priefert
  • Patent number: 6693327
    Abstract: A lateral semiconductor element (10) in thin-film SOI technology comprises an insulator layer (14) which rests on a substrate (12) and is buried under a thin silicon film (16), on top of which the source, or anode, contact (18) and the drain, or cathode, contact (22) are mounted. The anode contact (18) and the cathode contact (22) each lie over separate shield regions (28,30) within substrate (12), with the anode contact (18) being electrically connected with substrate (12).
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: February 17, 2004
    Assignee: EUPEC Europaische Gesellschaft fur Leistungshalbleiter mbH
    Inventors: Dirk Priefert, Ralf Rudolf, Viktor Boguszewicz, Frank Michalzik, Rolf Buckhorst
  • Publication number: 20020121664
    Abstract: A lateral semiconductor element (10) in thin-film SOI technology comprises an insulator layer (14) which rests on a substrate (12) and is buried under a thin silicon film (16), on top of which the source, or anode, contact (18) and the drain, or cathode, contact (22b) are mounted. The anode contact (18) and the cathode contact (22) each lie over separate shield regions (28,30) within substrate (12), with the anode contact (18) being electrically connected with substrate (12).
    Type: Application
    Filed: February 12, 2002
    Publication date: September 5, 2002
    Applicant: Hanning Elektro-Werke GmbH & Co. KG
    Inventors: Dirk Priefert, Ralf Rudolf, Viktor Boguszewicz, Frank Michalzik, Rolf Buckhorst