Patents by Inventor Maximilian Roesch

Maximilian Roesch 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: 20170207309
    Abstract: A method of processing a semiconductor device is presented. The method includes providing a semiconductor body; forming a trench within the semiconductor body, the trench having a stripe configuration and extending laterally within an active region of the semiconductor body that is surrounded by a non-active region of the semiconductor body; forming, within the trench, a first electrode and a first insulator insulating the first electrode from the semiconductor body; carrying out a first etching step for partially removing the first electrode along the total lateral extension of the first electrode such that the remaining part of the first electrode has a planar surface, thereby creating a well in the trench that is laterally confined by the first insulator; depositing a second insulator on top the planar surface; and forming a second electrode within the well of the trench. The second insulator insulates the second electrode from the first electrode.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 20, 2017
    Inventors: Heimo Hofer, Martin Poelzl, Maximilian Roesch, Britta Wutte
  • Publication number: 20170125345
    Abstract: A semiconductor chip has a semiconductor body with a bottom side and a top side arranged distant from the bottom side in a vertical direction, an active and a non-active transistor region, a drift region formed in the semiconductor body, a contact terminal for externally contacting the semiconductor chip, and a plurality of transistor cells formed in the semiconductor body. Each of the transistor cells has a first electrode. Each of a plurality of connection lines electrically connects another one of the first electrodes to the contact terminal pad at a connecting location of the respective connection line. Each of the connection lines includes a resistance section formed of a locally increased specific resistance relative to a specific resistance of adjacent semiconductor material or metal of the respective connection line. Each of the connecting locations and each of the resistance sections is arranged in the non-active transistor region.
    Type: Application
    Filed: January 12, 2017
    Publication date: May 4, 2017
    Inventors: Gerhard Noebauer, Ralf Siemieniec, Maximilian Roesch, Martin Poelzl, Michael Hutzler
  • Patent number: 9627520
    Abstract: A semiconductor component is disclosed. One embodiment includes a semiconductor body including a first semiconductor layer having at least one active component zone, a cell array with a plurality of trenches, and at least one cell array edge zone. The cell array edge zone is only arranged in an edge region of the cell array, adjoining at least one trench of the cell array, and being at least partially arranged below the at least one trench in the cell array.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 18, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Ralf Siemieniec, Christian Geissler, Oliver Blank, Maximilian Roesch
  • Patent number: 9614044
    Abstract: A semiconductor device includes a semiconductor body. The semiconductor body includes a load transistor part and a sensor transistor part. A first source region of the load transistor part and a second source region of the sensor transistor part are electrically separated from each other. A common gate electrode in a common gate trench extends into the semiconductor body from a first surface. A first part of the common gate trench is in the load transistor part, and a second part of the common gate trench is in the sensor transistor part. A field electrode in a field electrode trench extends into the semiconductor body from the first surface. A maximum dimension of the field electrode trench parallel to the first surface is smaller than a depth of the field electrode trench.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: April 4, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Michael Hutzler, Maximilian Roesch
  • Patent number: 9570553
    Abstract: A semiconductor chip has a semiconductor body with a bottom side and a top side arranged distant from the bottom side in a vertical direction, an active and a non-active transistor region, a drift region formed in the semiconductor body, a contact terminal for externally contacting the semiconductor chip, and a plurality of transistor cells formed in the semiconductor body. Each of the transistor cells has a first electrode. Each of a plurality of connection lines electrically connects another one of the first electrodes to the contact terminal pad at a connecting location of the respective connection line. Each of the connection lines has a resistance section that is formed of at least one of: a locally reduced cross-sectional area of the connection line section; and a locally increased specific resistance. Each of the connecting locations and each of the resistance sections is arranged in the non-active transistor region.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: February 14, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Gerhard Noebauer, Ralf Siemieniec, Maximilian Roesch, Martin Poelzl, Michael Hutzler
  • Patent number: 9543398
    Abstract: A semiconductor switching device includes a first load terminal electrically connected to source zones of transistor cells. The source zones form first pn junctions with body zones. A second load terminal is electrically connected to a drain construction that forms second pn junctions with the body zones. Control structures, which include a control electrode and charge storage structures, directly adjoin the body zones. The control electrode controls a load current through the body zones. The charge storage structures insulate the control electrode from the body zones and contain a control charge adapted to induce inversion channels in the body zones in the absence of a potential difference between the control electrode and the first load electrode.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 10, 2017
    Assignee: Infineon Technologies AG
    Inventors: Johannes Georg Laven, Anton Mauder, Matteo Dainese, Franz Hirler, Christian Jaeger, Maximilian Roesch, Wolfgang Roesner, Martin Stiftinger, Robert Strenz
  • Patent number: 9484410
    Abstract: A semiconductor component may include a semiconductor layer which has a front side and a back side, a first terminal electrode on the front side, a second terminal electrode on the back side, a first dopant region of a first conduction type on the front side, which is electrically connected to one of the terminal electrodes, a second dopant region of a second conduction type in the semiconductor layer, which is electrically connected to the other terminal electrode, a pn junction being formed between the first and second dopant regions, a dielectric layer on the back side between the semiconductor layer and the second terminal electrode, and the dielectric layer having an opening through which an electrical connection between the second terminal electrode and the first or second dopant region is passed.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: November 1, 2016
    Assignee: Infineon Technologies AG
    Inventors: Oliver Haeberlen, Franz Hirler, Maximilian Roesch
  • Publication number: 20160225884
    Abstract: A semiconductor component is disclosed. One embodiment includes a semiconductor body including a first semiconductor layer having at least one active component zone, a cell array with a plurality of trenches, and at least one cell array edge zone. The cell array edge zone is only arranged in an edge region of the cell array, adjoining at least one trench of the cell array, and being at least partially arranged below the at least one trench in the cell array.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Applicant: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Ralf Siemieniec, Christian Geissler, Oliver Blank, Maximilian Roesch
  • Publication number: 20160111504
    Abstract: First trenches extend from a process surface into a semiconductor layer. An alignment layer with mask pits in a with respect to the process surface vertical projection of the first trenches is formed on the process surface. Sidewalls of the mask pits have a smaller tilt angle with respect to the process surface than sidewalls of the first trenches. The mask pits are filled with an auxiliary material. A gate trench for a gate structure is formed in a mesa section of the semiconductor layer between the first trenches, wherein the auxiliary material is used as an etch mask.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Inventors: Martin Poelzl, Oliver Blank, Franz Hirler, Maximilian Roesch, Li Juin Yip
  • Publication number: 20160104797
    Abstract: A semiconductor device comprises a gate electrode in a trench in a semiconductor body. The gate electrode comprises a plurality of gate segments disposed along an extension direction of the trench, the gate segments being connected to neighboring gate segments by means of connection elements. A distance between adjacent gate segments is equal to or smaller than 0.5*L, wherein L denotes a length of each of the gate segments, the length being measured along the extension direction of the trench.
    Type: Application
    Filed: September 30, 2015
    Publication date: April 14, 2016
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Martin Poelzl, Georg Ehrentraut, Franz Hirler, Maximilian Roesch
  • Publication number: 20160079377
    Abstract: A semiconductor device includes a semiconductor body. The semiconductor body includes a load transistor part and a sensor transistor part. A first source region of the load transistor part and a second source region of the sensor transistor part are electrically separated from each other. A common gate electrode in a common gate trench extends into the semiconductor body from a first surface. A first part of the common gate trench is in the load transistor part, and a second part of the common gate trench is in the sensor transistor part. A field electrode in a field electrode trench extends into the semiconductor body from the first surface. A maximum dimension of the field electrode trench parallel to the first surface is smaller than a depth of the field electrode trench.
    Type: Application
    Filed: September 14, 2015
    Publication date: March 17, 2016
    Inventors: Michael Hutzler, Maximilian Roesch
  • Patent number: 9252251
    Abstract: A semiconductor component is disclosed. One embodiment includes a semiconductor body including a first semiconductor layer having at least one active component zone, a cell array with a plurality of trenches, and at least one cell array edge zone. The cell array edge zone is only arranged in an edge region of the cell array, adjoining at least one trench of the cell array, and being at least partially arranged below the at least one trench in the cell array.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 2, 2016
    Assignee: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Ralf Siemieniec, Christian Geissler, Oliver Blank, Maximilian Roesch
  • Publication number: 20150187879
    Abstract: A semiconductor component may include a semiconductor layer which has a front side and a back side, a first terminal electrode on the front side, a second terminal electrode on the back side, a first dopant region of a first conduction type on the front side, which is electrically connected to one of the terminal electrodes, a second dopant region of a second conduction type in the semiconductor layer, which is electrically connected to the other terminal electrode, a pn junction being formed between the first and second dopant regions, a dielectric layer on the back side between the semiconductor layer and the second terminal electrode, and the dielectric layer having an opening through which an electrical connection between the second terminal electrode and the first or second dopant region is passed.
    Type: Application
    Filed: March 9, 2015
    Publication date: July 2, 2015
    Inventors: Oliver HAEBERLEN, Franz HIRLER, Maximilian ROESCH
  • Patent number: 8975696
    Abstract: A semiconductor component may include a semiconductor layer which has a front side and a back side, a first terminal electrode on the front side, a second terminal electrode on the back side, a first dopant region of a first conduction type on the front side, which is electrically connected to one of the terminal electrodes, a second dopant region of a second conduction type in the semiconductor layer, which is electrically connected to the other terminal electrode, a pn junction being formed between the first and second dopant regions, a dielectric layer on the back side between the semiconductor layer and the second terminal electrode, and the dielectric layer having an opening through which an electrical connection between the second terminal electrode and the first or second dopant region is passed.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 10, 2015
    Assignee: Infineon Technologies AG
    Inventors: Oliver Haeberlen, Franz Hirler, Maximilian Roesch
  • Publication number: 20150048445
    Abstract: A semiconductor chip has a semiconductor body with a bottom side and a top side arranged distant from the bottom side in a vertical direction, an active and a non-active transistor region, a drift region formed in the semiconductor body, a contact terminal for externally contacting the semiconductor chip, and a plurality of transistor cells formed in the semiconductor body. Each of the transistor cells has a first electrode. Each of a plurality of connection lines electrically connects another one of the first electrodes to the contact terminal pad at a connecting location of the respective connection line. Each of the connection lines has a resistance section that is formed of at least one of: a locally reduced cross-sectional area of the connection line section; and a locally increased specific resistance. Each of the connecting locations and each of the resistance sections is arranged in the non-active transistor region.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 19, 2015
    Inventors: Gerhard Noebauer, Ralf Siemieniec, Maximilian Roesch, Martin Poelzl
  • Patent number: 8487370
    Abstract: A semiconductor device includes a semiconductor body including a trench with first and second opposing sidewalls. A first electrode is arranged in a lower portion of the trench and a second electrode in an upper portion of the trench. A dielectric structure is arranged in the trench, including a first portion between the electrodes. The first portion includes, in sequence along a lateral direction from the first sidewall to the second sidewall, a first part including a first dielectric material, a second part including a second dielectric material selectively etchable to the first dielectric material, a third part including the first dielectric material, the first dielectric material of the third part being continuously arranged along a vertical direction from a top side of the first electrode to a bottom side of the second electrode, a fourth part including the second dielectric material and a fifth part including the first dielectric material.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 16, 2013
    Assignee: Infineon Technologies Austria AG
    Inventors: Oliver Blank, Ralf Siemieniec, Martin Poelzl, Maximilian Roesch
  • Patent number: 8362551
    Abstract: In one embodiment, a field effect transistor has a semiconductor body, a drift region of a first conductivity type and a gate electrode. At least one trench extends into the drift region. A field plate is arranged at least in a portion of the at least one trench. A dielectric material at least partially surrounds both the gate electrode and the field plate. The field plate includes a first semiconducting material.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: January 29, 2013
    Assignee: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Walter Rieger, Andrew Wood, Mathias Born, Ralf Siemieniec, Jan Ropohl, Martin Poelzl, Oliver Blank, Uli Hiller, Oliver Haeberlein, Rudolf Zelsacher, Maximilian Roesch, Joachim Krumrey
  • Publication number: 20120153386
    Abstract: A semiconductor component is disclosed. One embodiment includes a semiconductor body including a first semiconductor layer having at least one active component zone, a cell array with a plurality of trenches, and at least one cell array edge zone. The cell array edge zone is only arranged in an edge region of the cell array, adjoining at least one trench of the cell array, and being at least partially arranged below the at least one trench in the cell array.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 21, 2012
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Franz Hirler, Ralf Siemieniec, Christian Geissler, Oliver Blank, Maximilian Roesch
  • Patent number: 8114743
    Abstract: An integrated circuit device with a semiconductor body and a method for the production of a semiconductor device a provided. The semiconductor body comprises a cell field with a drift zone of a first conduction type. In addition, the semiconductor device comprises an edge region surrounding the cell field. Field plates with a trench gate structure are arranged in the cell field, and an edge trench surrounding the cell field is provided in the edge region. The front side of the semiconductor body is in the edge region provided with an edge zone of a conduction type complementing the first conduction type with doping materials of body zones of the cell field. The edge zone of the complementary conduction type extends both within and outside the edge trench.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 14, 2012
    Assignee: Infineon Technologies Austria AG
    Inventors: Uli Hiller, Oliver Blank, Ralf Siemieniec, Maximilian Roesch
  • Publication number: 20120025304
    Abstract: A semiconductor device includes a semiconductor body including a trench with first and second opposing sidewalls. A first electrode is arranged in a lower portion of the trench and a second electrode in an upper portion of the trench. A dielectric structure is arranged in the trench, including a first portion between the electrodes. The first portion includes, in sequence along a lateral direction from the first sidewall to the second sidewall, a first part including a first dielectric material, a second part including a second dielectric material selectively etchable to the first dielectric material, a third part including the first dielectric material, the first dielectric material of the third part being continuously arranged along a vertical direction from a top side of the first electrode to a bottom side of the second electrode, a fourth part including the second dielectric material and a fifth part including the first dielectric material.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Oliver Blank, Ralf Siemieniec, Martin Poelzl, Maximilian Roesch