Patents by Inventor Roman Roth

Roman Roth 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: 9397022
    Abstract: A semiconductor device includes a semiconductor substrate having a first side, at least a first area formed in the semiconductor substrate, at least a second area formed in the semiconductor substrate, a first metal layer structure having at least a first metal portion in the first area and at least a second metal portion in the second area, and a second metal layer structure on and in ohmic contact with the first metal portion in the first area while leaving the second metal portion of the first metal layer structure in the second area uncovered. The second metal layer structure and the first metal portion of the first metal layer structure form together a common metallization structure on the first side of the semiconductor substrate in the first area.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: July 19, 2016
    Assignee: Infineon Technologies Austria AG
    Inventors: Roman Roth, Frank Umbach
  • Publication number: 20160043013
    Abstract: A semiconductor device includes a semiconductor substrate having a first side, at least a first area formed in the semiconductor substrate, at least a second area formed in the semiconductor substrate, a first metal layer structure having at least a first metal portion in the first area and at least a second metal portion in the second area, and a second metal layer structure on and in ohmic contact with the first metal portion in the first area while leaving the second metal portion of the first metal layer structure in the second area uncovered. The second metal layer structure and the first metal portion of the first metal layer structure form together a common metallization structure on the first side of the semiconductor substrate in the first area.
    Type: Application
    Filed: October 12, 2015
    Publication date: February 11, 2016
    Inventors: Roman Roth, Frank Umbach
  • Patent number: 9196560
    Abstract: A method for forming a semiconductor device includes providing a semiconductor substrate having a first area and a second area. A first metal layer structure is formed which includes at least a first metal portion in the first area and a second metal portion in the second area. A plating mask is formed on the first metal layer structure to cover the second metal portion, and a second metal layer structure is plated on and in ohmic contact with the first metal portion of the first metal layer structure.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: November 24, 2015
    Assignee: Infineon Technologies Austria AG
    Inventors: Roman Roth, Frank Umbach
  • Publication number: 20150115391
    Abstract: A method for forming a semiconductor device includes providing a semiconductor substrate having a first area and a second area. A first metal layer structure is formed which includes at least a first metal portion in the first area and a second metal portion in the second area. A plating mask is formed on the first metal layer structure to cover the second metal portion, and a second metal layer structure is plated on and in ohmic contact with the first metal portion of the first metal layer structure.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Inventors: Roman Roth, Frank Umbach
  • Patent number: 8955219
    Abstract: The invention relates to a method for fabricating a bond by providing a body including a metallic surface provided with an inorganic, dielectric protective layer. The protective layer covers at least one surface zone of the metallic surface in which the metallic surface is to be electrically conductive bonded to a contact conductor. To fabricate the bond, a portion of a provided contact conductor above the surface zone is pressed on to the protective layer and the body so that the protective layer is destroyed above the surface zone in achieving an electrically conductive bond between the metallic surface and the contact conductor.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: February 17, 2015
    Assignee: Infineon Technologies AG
    Inventors: Roman Roth, Dirk Siepe
  • Patent number: 8541892
    Abstract: A bonding connection between a bonding wire and a power semiconductor chip is disclosed. The power semiconductor chip has a semiconductor body arranged in which is an active cell region with a multiplicity of cells arranged one following the other in a lateral direction and connected electrically in parallel. The semiconductor body has a surface portion arranged above the active cell region in a vertical direction perpendicular to the lateral direction. Applied to the surface portion is a metallization layer onto which a bonding wire is bonded. The bonding wire comprises an alloy containing at least 99% by weight aluminum and at least one further alloying constituent. The aluminum has a grain structure with a mean grain size which is less than 2 ?m.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: September 24, 2013
    Assignee: Infineon Technologies AG
    Inventors: Dirk Siepe, Thomas Gutt, Roman Roth
  • Publication number: 20110121458
    Abstract: A bonding connection between a bonding wire and a power semiconductor chip is disclosed. The power semiconductor chip has a semiconductor body arranged in which is an active cell region with a multiplicity of cells arranged one following the other in a lateral direction and connected electrically in parallel. The semiconductor body has a surface portion arranged above the active cell region in a vertical direction perpendicular to the lateral direction. Applied to the surface portion is a metallization layer onto which a bonding wire is bonded. The bonding wire comprises an alloy containing at least 99% by weight aluminium and at least one further alloying constituent. The aluminum has a grain structure with a mean grain size which is less than 2 ?m.
    Type: Application
    Filed: September 23, 2010
    Publication date: May 26, 2011
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Dirk Siepe, Thomas Gutt, Roman Roth
  • Patent number: 7851913
    Abstract: A semiconductor device exhibits a first metal layer, made of a first metal, with at least one contiguous subsection. At least one second metal layer, made of a second metal, is placed on the contiguous subsection of the first metal layer. The second metal is harder than the first metal. The second metal layer is structured to form at least two layer regions, which are disposed on the contiguous subsection of the first metal layer. The second metal exhibits a boron-containing or phosphorus-containing metal or a boron-containing or phosphorus-containing metal alloy.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: December 14, 2010
    Assignee: Infineon Technologies AG
    Inventors: Thomas Gutt, Dirk Siepe, Thomas Laska, Michael Melzl, Matthias Stecher, Roman Roth
  • Publication number: 20100212153
    Abstract: The invention relates to a method for fabricating a bond by providing a body including a metallic surface provided with an inorganic, dielectric protective layer. The protective layer covers at least one surface zone of the metallic surface in which the metallic surface is to be electrically conductive bonded to a contact conductor. To fabricate the bond, a portion of a provided contact conductor above the surface zone is pressed on to the protective layer and the body so that the protective layer is destroyed above the surface zone in achieving an electrically conductive bond between the metallic surface and the contact conductor.
    Type: Application
    Filed: February 22, 2010
    Publication date: August 26, 2010
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Roman Roth, Dirk Siepe
  • Publication number: 20080122091
    Abstract: A semiconductor device exhibits a first metal layer, made of a first metal, with at least one contiguous subsection. At least one second metal layer, made of a second metal, is placed on the contiguous subsection of the first metal layer. The second metal is harder than the first metal. The second metal layer is structured to form at least two layer regions, which are disposed on the contiguous subsection of the first metal layer. The second metal exhibits a boron-containing or phosphorus-containing metal or a boron-containing or phosphorus-containing metal alloy.
    Type: Application
    Filed: November 20, 2006
    Publication date: May 29, 2008
    Inventors: Thomas Gutt, Drik Siepe, Thomas Laska, Michael Melzl, Matthias Stecher, Roman Roth