Patents by Inventor Stefan Willkofer
Stefan Willkofer 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).
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Publication number: 20180061660Abstract: A method of fabricating a semiconductor device includes forming a barrier layer over a surface of a semiconductor substrate. A treated barrier layer is formed by subjecting an exposed surface of the barrier layer to a surface treatment process. The surface treatment process includes treating the surface with a reactive material. A material layer is formed over the treated barrier layer. The material layer comprises a metal.Type: ApplicationFiled: August 26, 2016Publication date: March 1, 2018Inventors: Ravi Keshav Joshi, Kae-Horng Wang, Stefan Willkofer
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Patent number: 9891640Abstract: An embodiment relates to a device comprising a high-side semiconductor, a low-side semiconductor, a first sensing element arranged adjacent to the high-side semiconductor. The first sensing element is isolated from the high-side semiconductor and the first sensing element is directly connectable to a processing device.Type: GrantFiled: June 14, 2013Date of Patent: February 13, 2018Assignee: Infineon Technologies AGInventors: Stefan Willkofer, Andreas Kiep
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Patent number: 9871126Abstract: A discrete semiconductor transistor includes a gate resistor electrically coupled between a gate electrode terminal and a gate electrode of the discrete semiconductor transistor. A resistance R of the gate resistor at a temperature of ?40° C. is greater than at the temperature of 150° C.Type: GrantFiled: June 16, 2014Date of Patent: January 16, 2018Assignee: Infineon Technologies AGInventors: Andreas Kiep, Stefan Willkofer, Hans-Joachim Schulze
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Patent number: 9768766Abstract: A circuit may comprise an electronic switching element, an integrated sensor, and a low-impedance path from one of the terminals of the sensor to one of the terminals of the electronic switching element.Type: GrantFiled: July 14, 2014Date of Patent: September 19, 2017Assignee: Infineon Technologies Austria AGInventors: Stefan Willkofer, Gernot Langguth, Wolfgang Roesner, Andreas Grassmann
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Patent number: 9513318Abstract: An example relates to a circuit comprising an electronic switching element and an temperature compensating element, which is arranged in the vicinity of the electronic switching element.Type: GrantFiled: May 29, 2014Date of Patent: December 6, 2016Assignee: Infineon Technologies AGInventors: Andreas Kiep, Stefan Willkofer
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Patent number: 9269654Abstract: A semiconductor device, a method of manufacturing a semiconductor device and a method for transmitting a signal are disclosed. In accordance with an embodiment of the present invention, the semiconductor device comprises a first semiconductor chip comprising a first coil, a second semiconductor chip comprising a second coil inductively coupled to the first coil, and an isolating intermediate layer between the first semiconductor chip and the second semiconductor chip.Type: GrantFiled: February 13, 2014Date of Patent: February 23, 2016Assignee: Infineon Technologies AGInventors: Stefan Willkofer, Uwe Wahl, Bernhard Knott, Markus Hammer, Andreas Strasser
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Publication number: 20160013639Abstract: A circuit may comprise an electronic switching element, an integrated sensor, and a low-impedance path from one of the terminals of the sensor to one of the terminals of the electronic switching element.Type: ApplicationFiled: July 14, 2014Publication date: January 14, 2016Inventors: Stefan Willkofer, Gernot Langguth, Wolfgang Roesner, Andreas Grassmann
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Patent number: 9236290Abstract: A method for producing a semiconductor device having a sidewall insulation includes providing a semiconductor body having a first side and a second side lying opposite the first side. At least one first trench is at least partly filled with insulation material proceeding from the first side in the direction toward the second side into the semiconductor body. The at least one first trench is produced between a first semiconductor body region for a first semiconductor device and a second semiconductor body region for a second semiconductor device. An isolating trench extends from the first side of the semiconductor body in the direction toward the second side of the semiconductor body between the first and second semiconductor body regions in such a way that at least part of the insulation material of the first trench adjoins at least a sidewall of the isolating trench. The second side of the semiconductor body is partly removed as far as the isolating trench.Type: GrantFiled: February 3, 2012Date of Patent: January 12, 2016Assignee: Infineon Technologies AGInventors: Carsten Ahrens, Rudolf Berger, Manfred Frank, Uwe Hoeckele, Bernhard Knott, Ulrich Krumbein, Wolfgang Lehnert, Berthold Schuderer, Juergen Wagner, Stefan Willkofer
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Publication number: 20150364468Abstract: A discrete semiconductor transistor includes a gate resistor electrically coupled between a gate electrode terminal and a gate electrode of the discrete semiconductor transistor. A resistance R of the gate resistor at a temperature of ?40° C. is greater than at the temperature of 150° C.Type: ApplicationFiled: June 16, 2014Publication date: December 17, 2015Inventors: Andreas Kiep, Stefan Willkofer, Hans-Joachim Schulze
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Publication number: 20150346037Abstract: An integrated temperature sensor comprising a barrier layer connecting at least two conductive elements, wherein the barrier layer has a positive temperature coefficient.Type: ApplicationFiled: May 29, 2014Publication date: December 3, 2015Inventors: Andreas Kiep, Stefan Willkofer, Andreas Strasser
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Publication number: 20150346245Abstract: An example relates to a circuit comprising an electronic switching element and an temperature compensating element, which is arranged in the vicinity of the electronic switching element.Type: ApplicationFiled: May 29, 2014Publication date: December 3, 2015Inventors: Andreas Kiep, Stefan Willkofer
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Patent number: 8932476Abstract: Apparatuses and methods are provided where porous metal is deposited on a substrate, a mask is provided on the porous metal and then an etching is performed.Type: GrantFiled: February 7, 2013Date of Patent: January 13, 2015Assignee: Infineon Technologies AGInventors: Thomas Kunstmann, Stefan Willkofer, Anja Gissibl, Johann Strasser, Matthias Mueller, Eva-Maria Hess
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Publication number: 20140368258Abstract: An embodiment relates to a device comprising a high-side semiconductor, a low-side semiconductor, a first sensing element arranged adjacent to the high-side semiconductor. The first sensing element is isolated from the high-side semiconductor and the first sensing element is directly connectable to a processing device.Type: ApplicationFiled: June 14, 2013Publication date: December 18, 2014Inventors: Stefan Willkofer, Andreas Kiep
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Publication number: 20140217062Abstract: Apparatuses and methods are provided where porous metal is deposited on a substrate, a mask is provided on the porous metal and then an etching is performed.Type: ApplicationFiled: February 7, 2013Publication date: August 7, 2014Applicant: INFINEON TECHNOLOGIES AGInventors: Thomas Kunstmann, Stefan Willkofer, Anja Gissibl, Johann Strasser, Matthias Mueller, Eva-Maria Hess
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Patent number: 8753982Abstract: A method for producing a connection region on a side wall of a semiconductor body is disclosed. A first trench is produced on a first surface of a semiconductor body and extends into the semiconductor body. An insulation layer is formed on the side walls and on the bottom of the first trench, and the first trench is only partially filled. The unfilled part of the first trench is filled with an electrically conductive material. A separating trench is produced along the first trench in such a way that a side wall of the separating trench directly adjoins the first trench. The part of the insulation layer which adjoins the separating trench is at least partially removed, with the result that at least some of the electrically conductive material in the first trench is exposed.Type: GrantFiled: May 10, 2012Date of Patent: June 17, 2014Assignee: Infineon Technologies AGInventors: Carsten Ahrens, Berthold Schuderer, Stefan Willkofer
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Publication number: 20140159220Abstract: A semiconductor device, a method of manufacturing a semiconductor device and a method for transmitting a signal are disclosed. In accordance with an embodiment of the present invention, the semiconductor device comprises a first semiconductor chip comprising a first coil, a second semiconductor chip comprising a second coil inductively coupled to the first coil, and an isolating intermediate layer between the first semiconductor chip and the second semiconductor chip.Type: ApplicationFiled: February 13, 2014Publication date: June 12, 2014Applicant: Infineon Technologies AGInventors: Stefan Willkofer, Uwe Wahl, Bernhard Knott, Markus Hammer, Andreas Strasser
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Patent number: 8674800Abstract: A semiconductor device, a method of manufacturing a semiconductor device and a method for transmitting a signal are disclosed. In accordance with an embodiment of the present invention, the semiconductor device comprises a first semiconductor chip comprising a first coil, a second semiconductor chip comprising a second coil inductively coupled to the first coil, and an isolating intermediate layer between the first semiconductor chip and the second semiconductor chip.Type: GrantFiled: August 14, 2013Date of Patent: March 18, 2014Assignee: Infineon Technologies AGInventors: Stefan Willkofer, Uwe Wahl, Bernhard Knott, Markus Hammer, Andreas Strasser
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Patent number: 8614616Abstract: A semiconductor device, a method of manufacturing a semiconductor device and a method for transmitting a signal are disclosed. In accordance with an embodiment of the present invention, the semiconductor device comprises a first semiconductor chip comprising a first coil, a second semiconductor chip comprising a second coil inductively coupled to the first coil, and an isolating intermediate layer between the first semiconductor chip and the second semiconductor chip.Type: GrantFiled: January 18, 2011Date of Patent: December 24, 2013Assignee: Infineon Technologies AGInventors: Stefan Willkofer, Uwe Wahl, Bernhard Knott, Markus Hammer, Andreas Strasser
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Publication number: 20130328166Abstract: A semiconductor device, a method of manufacturing a semiconductor device and a method for transmitting a signal are disclosed. In accordance with an embodiment of the present invention, the semiconductor device comprises a first semiconductor chip comprising a first coil, a second semiconductor chip comprising a second coil inductively coupled to the first coil, and an isolating intermediate layer between the first semiconductor chip and the second semiconductor chip.Type: ApplicationFiled: August 14, 2013Publication date: December 12, 2013Applicant: Infineon Technologies AGInventors: Stefan Willkofer, Uwe Wahl, Bernhard Knott, Markus Hammer, Andreas Strasser
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Publication number: 20120289023Abstract: A method for producing a semiconductor device having a sidewall insulation includes providing a semiconductor body having a first side and a second side lying opposite the first side. At least one first trench is at least partly filled with insulation material proceeding from the first side in the direction toward the second side into the semiconductor body. The at least one first trench is produced between a first semiconductor body region for a first semiconductor device and a second semiconductor body region for a second semiconductor device. An isolating trench extends from the first side of the semiconductor body in the direction toward the second side of the semiconductor body between the first and second semiconductor body regions in such a way that at least part of the insulation material of the first trench adjoins at least a sidewall of the isolating trench. The second side of the semiconductor body is partly removed as far as the isolating trench.Type: ApplicationFiled: February 3, 2012Publication date: November 15, 2012Applicant: INFINEON TECHNOLOGIES AGInventors: Carsten Ahrens, Rudolf Berger, Manfred Frank, Uwe Hoeckele, Bernhard Knott, Ulrich Krumbein, Wolfgang Lehnert, Berthold Schuderer, Juergen Wagner, Stefan Willkofer