Patents by Inventor Rolf Weis

Rolf Weis 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: 11682696
    Abstract: A semiconductor device includes a layer stack with first and second semiconductor layers of complementary doping types are arranged alternatingly between first and second surfaces of the layer stack. A first semiconductor region adjoins the first semiconductor layers and has a first end arranged in a first device region and extends from the first end into a second device region. Second semiconductor regions adjoin at least one of the second semiconductor layers. A third semiconductor region adjoins the first semiconductor layers. The first semiconductor region extends from the first device region into the second device region and is spaced apart from the third semiconductor region. The second semiconductor regions are arranged between, and spaced apart from, the third and first semiconductor regions.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: June 20, 2023
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Ahmed Mahmoud, Franz Hirler, Marco Mueller, Rolf Weis
  • Patent number: 11682695
    Abstract: A semiconductor device includes a layer stack with first semiconductor layers and second semiconductor layers of opposite doping types arranged alternatingly. A first semiconductor region of a first semiconductor device adjoins the first semiconductor layers, and has a first end arranged in a first region of the first semiconductor device and extends from the first end into a second region of the first semiconductor device. Second semiconductor regions of the first semiconductor device adjoin at least one of the second semiconductor layers. A third semiconductor region of the first semiconductor device adjoins the first semiconductor layers. The first semiconductor region extends from the first region into the second region and is spaced apart from the third semiconductor region. The second semiconductor regions are arranged between, and spaced apart from, the third and first semiconductor regions.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: June 20, 2023
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Ahmed Mahmoud, Franz Hirler, Marco Mueller, Rolf Weis
  • Publication number: 20230071856
    Abstract: A method for producing a protection device and a protection device are disclosed. The method includes: forming a first diode arrangement including at least one first diode and at least one second diode connected in anti-series between a first circuit node and a second circuit node of the first diode arrangement; forming a second diode arrangement including at least one first diode and at least one second diode connected in anti-series between a first circuit node and a second circuit node of the second diode arrangement; and connecting the second circuit node of the first diode arrangement and the second circuit node of the second diode arrangement.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 9, 2023
    Inventors: Rolf Weis, Josef Deichler, Henning Feick, Ahmed Mahmoud
  • Publication number: 20230049511
    Abstract: Disclosed is a circuit arrangement. The circuit arrangement includes: an electronic circuit integrated in a semiconductor body; an input pin coupled to the electronic circuit; an insulation layer formed on top of the semiconductor body; and a protection device connected to the input pin. The protection device is integrated in a polysilicon layer formed on top of the insulation layer.
    Type: Application
    Filed: August 8, 2022
    Publication date: February 16, 2023
    Inventors: Rolf Weis, Josef Deichler, Henning Feick, Ahmed Mahmoud
  • Publication number: 20220384567
    Abstract: A transistor arrangement is disclosed. The transistor arrangement includes a first transistor device and a second transistor device. The first transistor device and the second transistor device are connected in series and integrated in a common semiconductor body. The first transistor device is a lateral superjunction transistor device and is integrated in a first device region of the semiconductor body. The second transistor device is a lateral transistor device and is integrated in at least one second device region of the semiconductor body. The at least one second device region is spaced apart from the first device region.
    Type: Application
    Filed: May 17, 2022
    Publication date: December 1, 2022
    Inventors: Rolf Weis, Franz Hirler, Katarzyna Kowalik-Seidl, Marco Mueller, Anthony Sanders
  • Publication number: 20220285532
    Abstract: The disclosure relates to a semiconductor die with a transistor device, which has a channel region formed in a semiconductor body, a gate region aside the channel region, for controlling a channel formation, a drift region formed in the semiconductor body, and a field electrode in a field electrode trench, which extends from a frontside of the semiconductor body vertically into the drift region, wherein an insulating layer is formed on the frontside of the semiconductor body and a frontside metallization is formed on the insulating layer, and wherein a capacitor electrode is formed in the insulating layer, which is conductively connected to at least a portion of the field electrode.
    Type: Application
    Filed: February 28, 2022
    Publication date: September 8, 2022
    Inventors: Stefan Tegen, Alessandro Ferrara, Adrian Finney, Matthias Kroenke, Christoph Kubasch, Rolf Weis
  • Publication number: 20220254934
    Abstract: An electronic circuit is disclosed. The electronic circuit includes: a first transistor device integrated in an inner region of a first semiconductor body; a level shifter integrated in a level shifter region of the first semiconductor body, the level shifter region located in an edge region surrounding the inner region of the semiconductor body; and a drive circuit integrated in a drive circuit region in the edge region of the first semiconductor body, the drive circuit configured to receive a first input signal from a first input and drive the first transistor device based on the first input the drive circuit region arranged closer to the inner region than the level shifter region.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 11, 2022
    Inventors: Richard Hensch, Franz Stueckler, Stefan Tegen, Rolf Weis
  • Patent number: 11404535
    Abstract: A method includes forming a layer stack with a plurality of first layers of a first doping type and a plurality of second layers of a second doping type complementary to the first doping type on top of a carrier. Forming the layer stack includes forming a plurality of epitaxial layers on the carrier. Forming each of the plurality of epitaxial layers includes depositing a layer of semiconductor material, forming at least two first implantation regions of one of a first type or a second type at different vertical positions of the respective layer of semiconductor material, and forming at least one second implantation region of a type that is complementary to the type of the first implantation regions, the first implantation regions and the second implantation regions being arranged alternatingly.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: August 2, 2022
    Assignee: Infineon Technologies Austria AG
    Inventors: Rolf Weis, Richard Hensch, Ahmed Mahmoud
  • Publication number: 20220199827
    Abstract: A transistor device includes a semiconductor body having a substantially planar main surface, a source region extending to the main surface and having a first conductivity type, a body region extending to the main surface and having a second conductivity type, a drain region extending to the main surface and having the first conductivity type, a drift region having the first conductivity type, and a gate electrode arranged on the main surface laterally between the source and drain regions and electrically insulated from the semiconductor body by an insulation structure. The insulation structure includes a gate dielectric arranged on the main surface and a shallow trench arranged in the drift region and filled with electrically insulating material. The shallow trench has at least partly a wedge shape and the electrically insulating material has an upper surface that is substantially planar and extends substantially parallel to the main surface.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Inventors: Rolf Weis, Ahmed Mahmoud
  • Patent number: 11342467
    Abstract: An electronic circuit is disclosed. The electronic circuit includes: a first transistor device integrated in an inner region of a first semiconductor body; a level shifter integrated in a level shifter region of the first semiconductor body, the level shifter region located in an edge region surrounding the inner region of the semiconductor body; and a drive circuit integrated in a drive circuit region in the edge region of the first semiconductor body, the drive circuit configured to receive a first input signal from a first input and drive the first transistor device based on the first input signal, the drive circuit region arranged closer to the inner region than the level shifter region.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: May 24, 2022
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Richard Hensch, Franz Stueckler, Stefan Tegen, Rolf Weis
  • Patent number: 11309434
    Abstract: A semiconductor device includes a layer stack with a plurality of first semiconductor layers of a first doping type and a plurality of second semiconductor layers of a second doping type complementary to the first doping type. A first semiconductor region of a first semiconductor device adjoins the first semiconductor layers. Each second semiconductor region of the first semiconductor device adjoins at least one of the second semiconductor layers, and is spaced apart from the first semiconductor region. A third semiconductor layer adjoins the layer stack and each first semiconductor region and each second semiconductor region. The third semiconductor layer includes a first region arranged between the first semiconductor region and the second semiconductor region in a first direction. A third semiconductor region of the first or the second doping type extends from a first surface of the third semiconductor layer into the first region.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: April 19, 2022
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Ahmed Mahmoud, Rolf Weis, Armin Willmeroth
  • Publication number: 20220093792
    Abstract: According to an embodiment of a semiconductor device, the device includes: a transistor or diode device formed in a semiconductor substrate; an insulating material at least partially covering a lateral drift zone of the transistor or diode device or a termination region; and a fill pattern disposed over the lateral drift zone or termination region, the fill pattern having a variable density that follows equipotential lines of an electric field distribution expected between the fill pattern at a surface of the lateral drift zone or termination region during operation of the semiconductor device. Corresponding methods of producing the semiconductor device are also described.
    Type: Application
    Filed: September 20, 2021
    Publication date: March 24, 2022
    Inventors: Rolf Weis, Ahmed Mahmoud, Marco Mueller
  • Patent number: 11245002
    Abstract: A transistor arrangement includes: a layer stack with first and second semiconductor layers of complementary first and second doping types; a first source region of a first transistor device adjoining the first semiconductor layers; a first drain region of the first transistor device adjoining the second semiconductor layers and spaced apart from the first source region; gate regions of the first transistor device, each gate region adjoining at least one second semiconductor layer, being arranged between the first source region and the first drain region, and being spaced apart from the first source region and the first drain region; a third semiconductor layer adjoining the layer stack and each of the first source region, first drain region, and each gate region; and active regions of a second transistor device integrated in the third semiconductor layer in a second region spaced apart from a first region of the third semiconductor layer.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 8, 2022
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Rolf Weis, Henning Feick, Franz Hirler, Andreas Meiser
  • Publication number: 20220037536
    Abstract: An electronic circuit is disclosed. The electronic circuit includes: a first transistor device integrated in an inner region of a first semiconductor body; a level shifter integrated in a level shifter region of the first semiconductor body, the level shifter region located in an edge region surrounding the inner region of the semiconductor body; and a drive circuit integrated in a drive circuit region in the edge region of the first semiconductor body, the drive circuit configured to receive a first input signal from a first input and drive the first transistor device based on the first input signal, the drive circuit region arranged closer to the inner region than the level shifter region.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 3, 2022
    Inventors: Richard Hensch, Franz Stueckler, Stefan Tegen, Rolf Weis
  • Publication number: 20220028727
    Abstract: A method of manufacturing a semiconductor device is described. The method includes forming a hard mask over a semiconductor substrate. The hard mask is patterned to generate openings in the hard mask. Deep trenches are formed in the semiconductor substrate by etching through the openings in the hard mask. The openings in the hard mask are widened. A pre-filler side wall layer is formed over the widened openings of the hard mask and the side walls of the deep trenches. The pre-filler side wall layer is recessed down to at least a first depth in the semiconductor substrate. The deep trenches are filled with a filler material. A corresponding semiconductor device is also described.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 27, 2022
    Inventors: Cornelius Fuchs, Kimberly Gerber, Frank Hoffmann, Matthias Markert, Rolf Weis
  • Publication number: 20210376066
    Abstract: A semiconductor device includes a layer stack with first and second semiconductor layers of complementary doping types are arranged alternatingly between first and second surfaces of the layer stack. A first semiconductor region adjoins the first semiconductor layers and has a first end arranged in a first device region and extends from the first end into a second device region. Second semiconductor regions adjoin at least one of the second semiconductor layers. A third semiconductor region adjoins the first semiconductor layers. The first semiconductor region extends from the first device region into the second device region and is spaced apart from the third semiconductor region. The second semiconductor regions are arranged between, and spaced apart from, the third and first semiconductor regions.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 2, 2021
    Inventors: Ahmed Mahmoud, Franz Hirler, Marco Mueller, Rolf Weis
  • Publication number: 20210376065
    Abstract: A semiconductor device includes a layer stack with first semiconductor layers and second semiconductor layers of opposite doping types arranged alternatingly. A first semiconductor region of a first semiconductor device adjoins the first semiconductor layers, and has a first end arranged in a first region of the first semiconductor device and extends from the first end into a second region of the first semiconductor device. Second semiconductor regions of the first semiconductor device adjoin at least one of the second semiconductor layers. A third semiconductor region of the first semiconductor device adjoins the first semiconductor layers. The first semiconductor region extends from the first region into the second region and is spaced apart from the third semiconductor region. The second semiconductor regions are arranged between, and spaced apart from, the third and first semiconductor regions.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 2, 2021
    Inventors: Ahmed Mahmoud, Franz Hirler, Marco Mueller, Rolf Weis
  • Patent number: 11183598
    Abstract: An electronic circuit is disclosed. The electronic circuit includes: a first transistor device integrated in an inner region of a first semiconductor body; and a first drive circuit integrated in a first drive circuit region of the semiconductor body. The first drive circuit is configured to be connected to a level shifter and to drive a second transistor device. The first drive circuit region is located in an edge region surrounding the inner region of the semiconductor body.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 23, 2021
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Richard Hensch, Franz Stueckler, Stefan Tegen, Rolf Weis
  • Patent number: 11094780
    Abstract: A transistor arrangement and a method are disclosed. The transistor arrangement includes: a plurality of first semiconductor regions of a first doping type and a plurality of second semiconductor regions of a second doping type, the first semiconductor regions and the second semiconductor regions being arranged alternatingly in a vertical direction of a semiconductor body; a source region adjoining the plurality of first semiconductor regions; a drain region adjoining the plurality of second semiconductor regions and arranged spaced apart from the source region in a first lateral direction; and a plurality of gate regions each of which adjoins at least one of the plurality of second semiconductor regions and is arranged between the source region and the drain region. At least one of the first and semiconductor regions, but less than each of the first and second semiconductor regions has a doping dose that varies in the first lateral direction.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: August 17, 2021
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Rolf Weis, Ahmed Mahmoud
  • Patent number: 10903079
    Abstract: A method includes: forming first and second trenches in a semiconductor body; forming a first material layer on the semiconductor body in the first and second trenches such that a first residual trench remains in the first trench and a second residual trench remains in the second trench; removing the first material from the second trench; and forming a second material layer on the first material layer in the first residual trench and on the semiconductor body in the second trench. The first material layer includes dopants of a first doping type and the second material layer includes dopants of a second doping type. The method further includes diffusing dopants from the first material layer in the first trench into the semiconductor body to form a first doped region, and from the second material layer in the second trench into the semiconductor body to form a second doped region.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 26, 2021
    Assignee: Infineon Technologies Dresden GmbH & Co. KG
    Inventors: Rolf Weis, Thomas Gross, Hermann Gruber, Franz Hirler, Andreas Meiser, Markus Rochel, Till Schloesser, Detlef Weber