Patents by Inventor Stefan Dunkel

Stefan Dunkel 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: 20240120420
    Abstract: Structures including a ferroelectric field-effect transistor and methods of forming a structure including a ferroelectric field-effect transistor. The structure comprises a semiconductor substrate, a semiconductor layer, a dielectric layer arranged between the semiconductor layer and the semiconductor substrate, and first and second wells in the semiconductor substrate. The first well has a first conductivity type, and the second well has a second conductivity type opposite to the first conductivity type. A ferroelectric field-effect transistor comprises a gate structure on the semiconductor layer over the first well and the second well. The gate structure includes a ferroelectric layer comprising a ferroelectric material.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 11, 2024
    Inventors: Stefan Dünkel, Dominik Martin Kleimaier, Zhixing Zhao, Halid Mulaosmanovic
  • Publication number: 20240014320
    Abstract: Structures for a ferroelectric field-effect transistor and methods of forming a structure for a ferroelectric field-effect transistor. The structure comprises a gate stack having a ferroelectric layer, a first conductor layer, and a second conductor layer positioned in a vertical direction between the first conductor layer and the ferroelectric layer. The first conductor layer comprises a first material, the second conductor layer comprises a second material different from the first material, and the second conductor layer is in direct contact with the ferroelectric layer.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 11, 2024
    Inventors: Halid Mulaosmanovic, Stefan Dünkel, Sven Beyer, Joachim Metzger, Robert Binder
  • Publication number: 20230395605
    Abstract: Disclosed is a reconfigurable complementary metal oxide semiconductor (CMOS) device with multiple operating modes (e.g., frequency multiplication mode, etc.). The device includes an N-type field effect transistor (NFET) and a P-type field effect transistor (PFET), which are threshold voltage-programmable, which are connected in parallel, and which have electrically connected gates. The threshold voltages of the NFET and PFET can be concurrently programmed and the operating mode of the device can be set depending upon the specific combination of threshold voltages achieved in the NFET and PFET. Optionally, the threshold voltages of the NFET and PFET can be concurrently reprogrammed to switch the operating mode. Such a device is relatively small and achieves frequency multiplication and other functions with minimal power consumption. Also disclosed are methods for forming the device and for reconfiguring the device (i.e., for concurrently programming the NFET and PFET to set or switch operating modes).
    Type: Application
    Filed: August 21, 2023
    Publication date: December 7, 2023
    Inventors: Stefan Dünkel, Dominik M. Kleimaier
  • Patent number: 11825663
    Abstract: A nonvolatile memory device is provided, the device comprising a ferroelectric memory capacitor arranged over a first active region contact of a first transistor and a gate contact of a second transistor, whereby the ferroelectric memory capacitor at least partially overlaps a gate of the first transistor.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: November 21, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Johannes Müller, Thomas Melde, Stefan Dünkel, Ralf Richter
  • Patent number: 11817457
    Abstract: Disclosed is a reconfigurable complementary metal oxide semiconductor (CMOS) device with multiple operating modes (e.g., frequency multiplication mode, etc.). The device includes an N-type field effect transistor (NFET) and a P-type field effect transistor (PFET), which are threshold voltage-programmable, which are connected in parallel, and which have electrically connected gates. The threshold voltages of the NFET and PFET can be concurrently programmed and the operating mode of the device can be set depending upon the specific combination of threshold voltages achieved in the NFET and PFET. Optionally, the threshold voltages of the NFET and PFET can be concurrently reprogrammed to switch the operating mode. Such a device is relatively small and achieves frequency multiplication and other functions with minimal power consumption. Also disclosed are methods for forming the device and for reconfiguring the device (i.e., for concurrently programming the NFET and PFET to set or switch operating modes).
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: November 14, 2023
    Assignee: GlobalFoundries Dresden Module One Limited Liability Company & Co. KG
    Inventors: Stefan Dünkel, Dominik M. Kleimaier
  • Patent number: 11631772
    Abstract: A non-volatile memory (NVM) structure includes a first memory device including: a first inter-poly dielectric defined by an isolation layer over a first semiconductor layer over an insulator layer (SOI) stack over a bulk semiconductor substrate, a first tunneling insulator defined by the insulator layer, a first floating gate defined by the semiconductor layer of the SOI stack, and a first channel region defined in the bulk semiconductor substrate between a source region and a drain region. The memory device may also include a control gate over the SOI stack, an erase gate over a source region in the bulk substrate, and a bitline contact coupled to a drain region in the bulk substrate. The NVM structure may also include another memory device similar to the first memory device and sharing the source region.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: April 18, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Thomas Melde, Stefan Dünkel, Ralf Richter
  • Publication number: 20230067884
    Abstract: A nonvolatile memory device is provided, the device comprising a ferroelectric memory capacitor arranged over a first active region contact of a first transistor and a gate contact of a second transistor, whereby the ferroelectric memory capacitor at least partially overlaps a gate of the first transistor.
    Type: Application
    Filed: August 17, 2021
    Publication date: March 2, 2023
    Inventors: JOHANNES MÜLLER, THOMAS MELDE, STEFAN DÜNKEL, RALF RICHTER
  • Publication number: 20220223740
    Abstract: A non-volatile memory (NVM) structure includes a first memory device including: a first inter-poly dielectric defined by an isolation layer over a first semiconductor layer over an insulator layer (SOI) stack over a bulk semiconductor substrate, a first tunneling insulator defined by the insulator layer, a first floating gate defined by the semiconductor layer of the SOI stack, and a first channel region defined in the bulk semiconductor substrate between a source region and a drain region. The memory device may also include a control gate over the SOI stack, an erase gate over a source region in the bulk substrate, and a bitline contact coupled to a drain region in the bulk substrate. The NVM structure may also include another memory device similar to the first memory device and sharing the source region.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 14, 2022
    Inventors: Thomas Melde, Stefan Dünkel, Ralf Richter
  • Publication number: 20220216237
    Abstract: Disclosed is a reconfigurable complementary metal oxide semiconductor (CMOS) device with multiple operating modes (e.g., frequency multiplication mode, etc.). The device includes an N-type field effect transistor (NFET) and a P-type field effect transistor (PFET), which are threshold voltage-programmable, which are connected in parallel, and which have electrically connected gates. The threshold voltages of the NFET and PFET can be concurrently programmed and the operating mode of the device can be set depending upon the specific combination of threshold voltages achieved in the NFET and PFET. Optionally, the threshold voltages of the NFET and PFET can be concurrently reprogrammed to switch the operating mode. Such a device is relatively small and achieves frequency multiplication and other functions with minimal power consumption. Also disclosed are methods for forming the device and for reconfiguring the device (i.e., for concurrently programming the NFET and PFET to set or switch operating modes).
    Type: Application
    Filed: January 7, 2021
    Publication date: July 7, 2022
    Applicant: GLOBALFOUNDRIES Dresden Module One Limited Liability Company & Co. KG
    Inventors: Stefan Dünkel, Dominik M. Kleimaier
  • Patent number: 10840782
    Abstract: An assembly and a method for connecting ends of generator stator coils with a manifold are presented. The assembly includes an adapter having a sleeve connection conduit connected to a sleeve of the manifold and two hose connection conduits. Two hoses are connected between the two hose connection conduits and end of top stator coil and end of bottom stator coil respectively. The adapter provides two separate coolant flow paths from one sleeve of the manifold to the top stator coil and the bottom stator coil through two hoses. The assembly provides a simple modification to resolve connection issues between generator stator coils and manifold during stator coil rewinding as well as a possibility to monitor coolant temperatures of top and bottom stator coils independently.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: November 17, 2020
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Nicholas Eberhardt, Stefan Dunkel
  • Patent number: 10727251
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to rounded shaped transistors and methods of manufacture. The structure includes a gate structure composed of a metal electrode and a rounded ferroelectric material which overlaps an active area in a width direction into an isolation region.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: July 28, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Stefan Dünkel, Johannes Müller, Lars Müller-Meskamp
  • Publication number: 20200176456
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to rounded shaped transistors and methods of manufacture. The structure includes a gate structure composed of a metal electrode and a rounded ferroelectric material which overlaps an active area in a width direction into an isolation region.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 4, 2020
    Inventors: Stefan DÜNKEL, Johannes MÜLLER, Lars MÜLLER-MESKAMP
  • Publication number: 20190020250
    Abstract: An assembly and a method for connecting ends of generator stator coils with a manifold are presented. The assembly includes an adapter having a sleeve connection conduit connected to a sleeve of the manifold and two hose connection conduits. Two hoses are connected between the two hose connection conduits and end of top stator coil and end of bottom stator coil respectively. The adapter provides two separate coolant flow paths from one sleeve of the manifold to the top stator coil and the bottom stator coil through two hoses. The assembly provides a simple modification to resolve connection issues between generator stator coils and manifold during stator coil rewinding as well as a possibility to monitor coolant temperatures of top and bottom stator coils independently.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Inventors: Nicholas Eberhardt, Stefan Dunkel
  • Patent number: 10163933
    Abstract: Methods of forming a buffer layer to imprint ferroelectric phase in a ferroelectric layer and the resulting devices are provided. Embodiments include forming a substrate; forming a buffer layer over the substrate; forming a ferroelectric layer over the buffer layer; forming a channel layer over the ferroelectric layer; forming a gate oxide layer over a portion of the channel layer; and forming a gate over the gate oxide layer.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: December 25, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ralf Richter, Stefan Dünkel, Martin Trentzsch, Sven Beyer
  • Patent number: 8786187
    Abstract: A bushing for a high-pressure discharge lamp, which is suitable for connecting an electrode in the interior of a ceramic discharge vessel to a supply lead in a gastight manner on the exterior of the discharge vessel, wherein the bushing is an electrically conductive ceramic composite consisting of a mixture of LaB6 and at least one second material from the group Al2O3, Dy2Al5O12, AlN, AlON and Dy2O3 is disclosed.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: July 22, 2014
    Assignee: OSRAM GmbH
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Andreas Genz, Maik Hegewald
  • Patent number: 8664855
    Abstract: A high-pressure discharge lamp having an ignition aid may be provided, having a discharge vessel that is surrounded by gas, wherein the discharge vessel includes two ends having fusings in which electrodes are secured, wherein an ignition aid is fastened on at least one fusing, wherein the ignition aid has a local field amplifier in the form of a tip or a curved part, wherein the ignition aid is configured to cause a corona discharge in the surrounding gas which emits UV radiation into the discharge vessel.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 4, 2014
    Assignee: Osram AG
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Leon Grabinski, Janbernd Hentschel, Bernd Koch, Stefan Lichtenberg, Martin Tueshaus
  • Publication number: 20130285543
    Abstract: A bushing for a high-pressure discharge lamp, which is suitable for connecting an electrode in the interior of a ceramic discharge vessel to a supply lead in a gastight manner on the exterior of the discharge vessel, wherein the bushing is an electrically conductive ceramic composite consisting of a mixture of LaB6 and at least one second material from the group Al2O3, Dy2Al5O12, AlN, AlON and Dy2O3 is disclosed.
    Type: Application
    Filed: November 7, 2011
    Publication date: October 31, 2013
    Applicant: OSRAM GmbH
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Andreas Genz, Maik Hegewald
  • Publication number: 20130181604
    Abstract: A high-pressure discharge lamp having an ignition aid may be provided, having a discharge vessel that is surrounded by gas, wherein the discharge vessel includes two ends having fusings in which electrodes are secured, wherein an ignition aid is fastened on at least one fusing, wherein the ignition aid has a local field amplifier in the form of a tip or a curved part, wherein the ignition aid is configured to cause a corona discharge in the surrounding gas which emits UV radiation into the discharge vessel.
    Type: Application
    Filed: October 8, 2010
    Publication date: July 18, 2013
    Applicant: OSRAM AG
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Leon Grabinski, Janbernd Hentschel, Bernd Koch, Stefan Lichtenberg, Martin Tueshaus
  • Patent number: 8227990
    Abstract: A high pressure discharge lamp with a capacitive starting aid is provided. The high pressure discharge lamp may include an outer bulb; a discharge vessel that is accommodated in the outer bulb, the discharge vessel comprising at least one end with a seal in which an electrode system is fastened; a frame holding the discharge vessel in the outer bulb; and a starting aid fastened on the seal. The starting aid may have two functional parts.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: July 24, 2012
    Assignee: Osram AG
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Leon Grabinski, Janbernd Hentschel, Martin Tueshaus
  • Patent number: D690446
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: September 24, 2013
    Assignee: Osram AG
    Inventors: Johannes Buttstaedt, Stefan Dunkel, Andreas Genz, Maik Hegewald