Patents by Inventor Klaus Schrufer

Klaus Schrufer 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: 8698275
    Abstract: An electronic circuit arrangement has a substrate which has at least one metallization layer. At least one electrical interconnect and/or at least one via are formed in the metallization layer such that the electrical interconnect and the via are in the form of an electrical fuse link. In addition, the substrate has electrical circuit components which are arranged in the circuit layer. The circuit components are electrically coupled to one another by means of the electrical interconnect and by means of a plurality of vias.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: April 15, 2014
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Barth, Andreas Rusch, Klaus Schrüfer
  • Patent number: 8389357
    Abstract: A method of fabricating a memory device in a semiconductor substrate, the device having a memory array having a plurality of memory cell transistors arranged in rows and columns. The method includes forming a plurality of tunneling field effect transistors, forming a first well of the second doping type, forming a second well of the first doping type surrounding the first well, forming a first word line connected to a first row of memory cell transistors, forming a first bit line to control a voltage of doped drain regions of tunneling field effect transistors of a first column of memory cell transistors, and forming a second bit line parallel to the first bit line.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: March 5, 2013
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Thomas Nirschl, Danny Shum, Klaus Schrüfer
  • Patent number: 8288813
    Abstract: A memory device using tunneling field effect transistors (TFET) and buried bit lines is presented. The memory device includes a matrix containing rows and columns of storage cells. Each storage cell contains at least one cell transistor, which in turn contains first doped regions and second doped regions, one of which is a source and the other a drain. The memory device includes word lines, each of which is connected to storage cells of one row and bit lines, each of which is connected to storage cells of one column. The first doped regions are of a different doping type than the second doped regions.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: October 16, 2012
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Thomas Nirschl, Danny Shum, Klaus Schrüfer
  • Publication number: 20110171803
    Abstract: A memory device using tunneling field effect transistors (TFET) and buried bit lines is presented. The memory device includes a matrix containing rows and columns of storage cells. Each storage cell contains at least one cell transistor, which in turn contains first doped regions and second doped regions, one of which is a source and the other a drain. The memory device includes word lines, each of which is connected to storage cells of one row and bit lines, each of which is connected to storage cells of one column. The first doped regions are of a different doping type than the second doped regions.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Inventors: Ronald Kakoschke, Thomas Nirschl, Danny Shum, Klaus Schrüfer
  • Patent number: 7915662
    Abstract: A memory device using tunneling field effect transistors (TFET) and buried bit lines is presented. The memory device includes a matrix containing rows and columns of storage cells. Each storage cell contains at least one cell transistor, which in turn contains first doped regions and second doped regions, one of which is a source and the other a drain. The memory device includes word lines, each of which is connected to storage cells of one row and bit lines, each of which is connected to storage cells of one column. The first doped regions are of a different doping type than the second doped regions.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 29, 2011
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Thomas Nirschl, Danny Shum, Klaus Schrüfer
  • Publication number: 20110053331
    Abstract: This document discusses, among other things, apparatus having at least one CMOS transistor overlying a substrate; and at least one finned bipolar transistor overlying the substrate and methods for making the apparatus.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 3, 2011
    Inventors: Ronald KAKOSCHKE, Klaus SCHRÜFER
  • Publication number: 20110012208
    Abstract: A method for fabricating a field-effect transistor with local source/drain insulation. The method includes forming and patterning a gate stack with a gate layer and a gate dielectric on a semiconductor substrate; forming source and drain depressions at the gate stack in the semiconductor substrate; forming a depression insulation layer at least in a bottom region of the source and drain depressions; and filling the at least partially insulated source and drain depressions with a filling layer for realizing source and drain regions.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Applicant: Infineon Technologies AG
    Inventors: Jüergen Holz, Klaus Schrüfer, Helmut Tews
  • Patent number: 7834403
    Abstract: This document discusses, among other things, apparatus having at least one CMOS transistor overlying a substrate; and at least one finned bipolar transistor overlying the substrate and methods for making the apparatus.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: November 16, 2010
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Klaus Schrüfer
  • Publication number: 20090227083
    Abstract: A method for fabricating a field-effect transistor with local source/drain insulation. The method includes forming and patterning a gate stack with a gate layer and a gate dielectric on a semiconductor substrate; forming source and drain depressions at the gate stack in the semiconductor substrate; forming a depression insulation layer at least in a bottom region of the source and drain depressions; and filling the at least partially insulated source and drain depressions with a filling layer for realizing source and drain regions. Further, the step of forming source and drain depressions at the gate stack in the semiconductor substrate includes that first depressions are formed for realizing channel connection regions in the semiconductor substrate, spacers are formed at the gate stack, and second depressions are formed using the spacers as a mask in the first depressions and in the semiconductor substrate.
    Type: Application
    Filed: April 28, 2009
    Publication date: September 10, 2009
    Applicant: Infineon Technologies AG
    Inventors: Jurgen Holz, Klaus Schrufer, Helmut Tews
  • Patent number: 7528453
    Abstract: A field-effect transistor (FET) with local source-drain insulation is described. The FET includes a semiconductor substrate, source and drain depressions, a depression insulation layer, an electrically conductive filling layer, a gate dielectric, and a gate layer. The depression insulation layer is formed at least in bottom regions of the source and drain depressions. The electrically conductive filling layer realizes source and drain regions and fills the source and drain depressions at a surface of the depression insulation layer. The gate dielectric is formed at a substrate surface between the source and drain depressions. The gate layer (is formed at a surface of the gate dielectric. The source and drain depressions have, in an upper region, a widening with a predetermined death for realizing defined channel connection regions.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: May 5, 2009
    Assignee: Infineon Technologies AG
    Inventors: Jürgen Holz, Klaus Schrüfer, Helmut Tews
  • Publication number: 20090045467
    Abstract: This document discusses, among other things, apparatus having at least one CMOS transistor overlying a substrate; and at least one finned bipolar transistor overlying the substrate and methods for making the apparatus.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 19, 2009
    Inventors: Ronald Kakoschke, Klaus Schrufer
  • Patent number: 7440334
    Abstract: A memory cell having three transistors and a capacitor having metallic electrodes is described. Multiple memory cells may be arranged in a memory unit or array. Collective electrodes may be used in a space-saving embodiment of the capacitor.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: October 21, 2008
    Assignee: Infineon Technologies
    Inventors: Hans-Joachim Barth, Alexander Olbrich, Martin Ostermayr, Klaus Schrüfer
  • Publication number: 20070063313
    Abstract: An electronic circuit arrangement has a substrate which has at least one metallization layer. At least one electrical interconnect and/or at least one via are formed in the metallization layer such that the electrical interconnect and the via are in the form of an electrical fuse link. In addition, the substrate has electrical circuit components which are arranged in the circuit layer. The circuit components are electrically coupled to one another by means of the electrical interconnect and by means of a plurality of vias.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 22, 2007
    Inventors: Hans-Joachim Barth, Andreas Rusch, Klaus Schrufer
  • Publication number: 20060164876
    Abstract: A memory cell having three transistors and a capacitor having metallic electrodes is described. Multiple memory cells may be arranged in a memory unit or array. Collective electrodes may be used in a space-saving embodiment of the capacitor.
    Type: Application
    Filed: March 23, 2006
    Publication date: July 27, 2006
    Inventors: Hans-Joachim Barth, Alexander Olbrich, Martin Ostermayr, Klaus Schrufer
  • Publication number: 20060033145
    Abstract: A memory device using tunneling field effect transistors (TFET) and buried bit lines is presented. The memory device includes a matrix containing rows and columns of storage cells. Each storage cell contains at least one cell transistor, which in turn contains first doped regions and second doped regions, one of which is a source and the other a drain. The memory device includes word lines, each of which is connected to storage cells of one row and bit lines, each of which is connected to storage cells of one column. The first doped regions are of a different doping type than the second doped regions.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 16, 2006
    Inventors: Ronald Kakoschke, Thomas Nirschl, Danny Shum, Klaus Schrufer
  • Publication number: 20050280052
    Abstract: A field-effect transistor (FET) with local source-drain insulation is described. The FET includes a semiconductor substrate, source and drain depressions, a depression insulation layer, an electrically conductive filling layer, a gate dielectric, and a gate layer. The depression insulation layer is formed at least in bottom regions of the source and drain depressions. The electrically conductive filling layer realizes source and drain regions and fills the source and drain depressions at a surface of the depression insulation layer. The gate dielectric is formed at a substrate surface between the source and drain depressions. The gate layer (is formed at a surface of the gate dielectric. The source and drain depressions have, in an upper region, a widening with a predetermined depth for realizing defined channel connection regions.
    Type: Application
    Filed: September 17, 2003
    Publication date: December 22, 2005
    Inventors: Jurgen Holz, Klaus Schrufer, Helmut Tews