Patents by Inventor Wolfgang Lehnert

Wolfgang Lehnert 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: 20200227278
    Abstract: A method of forming a layer structure is provided. The method may include plasma-treating a metal surface with a hydrogen-containing plasma, thereby forming nucleophilic groups over the metal surface, and forming an organic layer over the metal surface, wherein the organic layer comprises silane and is covalently bonded to the nucleophilic groups.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 16, 2020
    Inventors: Johann Gatterbauer, Wolfgang Lehnert, Norbert Mais, Verena Muhr, Edmund Riedl, Harry Sax
  • Patent number: 10651072
    Abstract: This application relates to a method for producing a semiconductor component, in which a wafer composite is provided. The wafer composite includes a donor substrate, an auxiliary substrate and a separation layer arranged between the auxiliary substrate and the donor substrate. The separation layer has a support structure and sacrificial material, which is formed laterally between elements of the support structure. The auxiliary substrate is separated from the donor substrate. The separation includes a selective removal of the sacrificial material in relation to the support structure.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 12, 2020
    Assignee: Infineon Technologies AG
    Inventors: Rudolf Berger, Wolfgang Lehnert, Gerhard Metzger-Brueckl, Guenther Ruhl, Roland Rupp
  • Publication number: 20190362972
    Abstract: A method for processing a silicon carbide wafer includes implanting ions into the silicon carbide wafer to form an absorption layer in the silicon carbide wafer. The absorption coefficient of the absorption layer is at least 100 times the absorption coefficient of silicon carbide material of the silicon carbide wafer outside the absorption layer, for light of a target wavelength. The silicon carbide wafer is split along the absorption layer at least by irradiating the silicon carbide wafer with light of the target wavelength to obtain a silicon carbide device wafer and a remaining silicon carbide wafer.
    Type: Application
    Filed: May 24, 2019
    Publication date: November 28, 2019
    Inventors: Hans-Joachim Schulze, Alexander Breymesser, Guenter Denifl, Mihai Draghici, Bernhard Goller, Tobias Franz Wolfgang Hoechbauer, Wolfgang Lehnert, Roland Rupp, Werner Schustereder
  • Publication number: 20190348328
    Abstract: A method for processing a wide band gap semiconductor wafer is proposed. The method includes depositing a non-monocrystalline support layer at a back side of a wide band gap semiconductor wafer, depositing an epitaxial layer at a front side of the wide band gap semiconductor wafer, and splitting the wide band gap semiconductor wafer along a splitting region to obtain a device wafer including at least a part of the epitaxial layer, and a remaining wafer including the non-monocrystalline support layer.
    Type: Application
    Filed: May 13, 2019
    Publication date: November 14, 2019
    Inventors: Francisco Javier Santos Rodriguez, Guenter Denifl, Tobias Franz Wolfgang Hoechbauer, Martin Huber, Wolfgang Lehnert, Roland Rupp, Hans-Joachim Schulze
  • Patent number: 10431504
    Abstract: A semiconductor disk of a first crystalline material, which has a first lattice system, is bonded on a process surface of a base substrate, wherein a bonding layer is formed between the semiconductor disk and the base substrate. A second semiconductor layer of a second crystalline material with a second, different lattice system is formed by epitaxy on a first semiconductor layer formed from the semiconductor disk.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 1, 2019
    Assignee: Infineon Technologies Austria AG
    Inventors: Wolfgang Lehnert, Rudolf Berger, Albert Birner, Helmut Brech, Oliver Häberlen, Guenther Ruhl, Roland Rupp
  • Publication number: 20190244853
    Abstract: A wafer composite is provided which includes an auxiliary substrate, a donor substrate and a sacrificial layer formed between the auxiliary substrate and the donor substrate. Functional elements of the semiconductor component are formed in a component layer, including at least one partial layer of the donor substrate. The auxiliary substrate is then separated from the component layer by heat input into the sacrificial layer.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 8, 2019
    Inventors: Rudolf Berger, Wolfgang Lehnert, Gerhard Metzger-Brueckl, Guenther Ruhl, Roland Rupp
  • Publication number: 20190244850
    Abstract: This application relates to a method for producing a semiconductor component, in which a wafer composite is provided. The wafer composite includes a donor substrate, an auxiliary substrate and a separation layer arranged between the auxiliary substrate and the donor substrate. The separation layer has a support structure and sacrificial material, which is formed laterally between elements of the support structure. The auxiliary substrate is separated from the donor substrate. The separation includes a selective removal of the sacrificial material in relation to the support structure.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 8, 2019
    Inventors: Rudolf Berger, Wolfgang Lehnert, Gerhard Metzger-Brueckl, Guenther Ruhl, Roland Rupp
  • Publication number: 20180366427
    Abstract: A method of forming an aluminum oxide layer is provided. The method includes providing a metal surface including at least one metal of a group of metals, the group of metals consisting of copper, aluminum, palladium, nickel, silver, and alloys thereof. The method further includes depositing an aluminum oxide layer on the metal surface by atomic layer deposition, wherein a maximum processing temperature during the depositing is 280° C., such that the aluminum oxide layer is formed with a surface having a liquid solder contact angle of less than 40°.
    Type: Application
    Filed: June 19, 2018
    Publication date: December 20, 2018
    Inventors: Michael Rogalli, Johann Gatterbauer, Wolfgang Lehnert, Kurt Matoy, Evelyn Napetschnig, Manfred Schneegans, Bernhard Weidgans
  • Patent number: 10103123
    Abstract: Various embodiments provide a semiconductor device, including a final metal layer having a top side and at least one sidewall; and a passivation layer disposed over at least part of at least one of the top side and the at least one sidewall of the final metal layer; wherein the passivation layer has a substantially uniform thickness.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: October 16, 2018
    Assignee: Infineon Technologies AG
    Inventors: Michael Rogalli, Wolfgang Lehnert
  • Patent number: 10020226
    Abstract: In certain embodiments, a semiconductor device includes a plurality of semiconductor chips. Each semiconductor chip comprises a semiconductor body having a first side and a second side opposite the first side, a graphite substrate bonded to the second side of the semiconductor body and comprising an opening leaving an area of the second side of the semiconductor body uncovered by the graphite substrate, and a back-side metallization arranged in the opening of the graphite substrate and electrically contacting the area of the second side. The semiconductor device further includes a plurality of separation trenches each separating one of the plurality of semiconductor chips from an adjacent one of the plurality of semiconductor chips.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: July 10, 2018
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Roland Rupp, Wolfgang Lehnert, Francisco Javier Santos Rodriguez, Hans-Joachim Schulze
  • Publication number: 20180047619
    Abstract: A method for manufacturing a semiconductor device includes providing a carrier wafer; and forming a semiconductor device layer on the carrier wafer. After front side processing of the semiconductor device layer, the carrier wafer is removed by cutting along a plane which is parallel to the semiconductor device layer.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 15, 2018
    Inventors: Wolfgang Lehnert, Rudolf Berger, Rudolf Lehner, Gerhard Metzger-Brueckl, Guenther Ruhl
  • Patent number: 9881991
    Abstract: A method for manufacturing a semiconductor device and a semiconductor device are disclosed. The method comprises forming a trench in a substrate, partially filling the trench with a first semiconductive material, forming an interface along a surface of the first semiconductive material, and filling the trench with a second semiconductive material. The semiconductor device includes a first electrode arranged along sidewalls of a trench and a dielectric arranged over the first electrode. The semiconductor device further includes a second electrode at least partially filling the trench, wherein the second electrode comprises an interface within the second electrode.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: January 30, 2018
    Assignee: Infineon Technologies AG
    Inventors: Wolfgang Lehnert, Michael Stadtmueller, Stefan Pompl, Markus Meyer
  • Publication number: 20170309517
    Abstract: In certain embodiments, a semiconductor device includes a plurality of semiconductor chips. Each semiconductor chip comprises a semiconductor body having a first side and a second side opposite the first side, a graphite substrate bonded to the second side of the semiconductor body and comprising an opening leaving an area of the second side of the semiconductor body uncovered by the graphite substrate, and a back-side metallization arranged in the opening of the graphite substrate and electrically contacting the area of the second side. The semiconductor device further includes a plurality of separation trenches each separating one of the plurality of semiconductor chips from an adjacent one of the plurality of semiconductor chips.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: Roland Rupp, Wolfgang Lehnert, Francisco Javier Santos Rodriguez, Hans-Joachim Schulze
  • Patent number: 9793167
    Abstract: A method of producing a semiconductor device and a wafer structure are provided. The method includes attaching a donor wafer comprising silicon carbide to a carrier wafer comprising graphite, splitting the donor wafer along an internal delamination layer so that a split layer comprising silicon carbide and attached to the carrier wafer is formed, removing the carrier wafer above an inner portion of the split layer while leaving a residual portion of the carrier wafer attached to the split layer to form a partially supported wafer, and further processing the partially supported wafer.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: October 17, 2017
    Assignee: Infineon Technologies AG
    Inventors: Roland Rupp, Wolfgang Lehnert, Francisco Javier Santos Rodriguez
  • Publication number: 20170236801
    Abstract: Various embodiments provide a semiconductor device, including a final metal layer having a top side and at least one sidewall; and a passivation layer disposed over at least part of at least one of the top side and the at least one sidewall of the final metal layer; wherein the passivation layer has a substantially uniform thickness.
    Type: Application
    Filed: March 10, 2017
    Publication date: August 17, 2017
    Inventors: Michael Rogalli, Wolfgang Lehnert
  • Patent number: 9704750
    Abstract: A method of forming a semiconductor device and a semiconductor device are provided. The method includes providing a wafer stack including a carrier wafer comprising graphite and a device wafer comprising a wide band-gap semiconductor material and having a first side and a second side opposite the first side, the second side being attached to the carrier wafer, defining device regions of the wafer stack, partly removing the carrier wafer so that openings are formed in the carrier wafer arranged within respective device regions and that the device wafer is supported by a residual of the carrier wafer; and further processing the device wafer while the device wafer remains supported by the residual of the carrier wafer.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: July 11, 2017
    Assignee: Infineon Technologies AG
    Inventors: Roland Rupp, Wolfgang Lehnert, Francisco Javier Santos Rodriguez, Hans-Joachim Schulze
  • Patent number: 9590044
    Abstract: In various embodiments, an electronic component is provided. The electronic component may include a dielectric structure; and a two-dimensional material containing structure over the dielectric structure. The dielectric structure is doped with dopants to change the electric characteristic of the two-dimensional material containing structure.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: March 7, 2017
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Guenther Ruhl, Wolfgang Lehnert, Rudolf Berger
  • Patent number: 9583559
    Abstract: In one embodiment a method of forming a compressive polycrystalline semiconductive material layer is disclosed. The method comprises forming a polycrystalline semiconductive seed layer over a substrate and forming a silicon layer by depositing silicon directly on the polycrystalline silicon seed layer under amorphous process conditions at a temperature below 600 C.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: February 28, 2017
    Assignee: Infineon Technologies AG
    Inventors: Wolfgang Lehnert, Stefan Pompl, Markus Meyer
  • Patent number: 9576844
    Abstract: A composite wafer is manufactured by providing a carrier wafer including graphite and a protective layer, forming a bonding layer, and bonding the carrier wafer to a semiconductor wafer through the bonding layer.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: February 21, 2017
    Assignee: Infineon Technologies AG
    Inventors: Rudolf Berger, Hermann Gruber, Wolfgang Lehnert, Guenther Ruhl, Raimund Foerg, Anton Mauder, Hans-Joachim Schulze, Karsten Kellermann, Michael Sommer, Christian Rottmair, Roland Rupp
  • Publication number: 20170033010
    Abstract: A method of producing a semiconductor device and a wafer structure are provided. The method includes attaching a donor wafer comprising silicon carbide to a carrier wafer comprising graphite, splitting the donor wafer along an internal delamination layer so that a split layer comprising silicon carbide and attached to the carrier wafer is formed, removing the carrier wafer above an inner portion of the split layer while leaving a residual portion of the carrier wafer attached to the split layer to form a partially supported wafer, and further processing the partially supported wafer.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 2, 2017
    Inventors: Roland Rupp, Wolfgang Lehnert, Francisco Javier Santos Rodriguez