Patents by Inventor Klaus Schruefer

Klaus Schruefer 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: 20120068149
    Abstract: In one or more embodiments, a semiconductor device a FinFET device and a second device. In one or more embodiments, the semiconductor device has a contact element coupled between a surface of the fin and the second device.
    Type: Application
    Filed: November 16, 2011
    Publication date: March 22, 2012
    Inventors: Ronald Kakoschke, Klaus Schruefer
  • Patent number: 8106424
    Abstract: A field effect transistor with a heterostructure includes a strained monocrystalline semiconductor layer formed on a carrier material, which has a relaxed monocrystalline semiconductor layer made of a first semiconductor material (Si) as the topmost layer. The strained monocrystalline semiconductor layer has a semiconductor alloy (GexSi1-x), where the proportion x of a second semiconductor material can be set freely. Furthermore, a gate insulation layer and a gate layer are formed on the strained semiconductor layer. To define an undoped channel region, drain/source regions are formed laterally with respect to the gate layer at least in the strained semiconductor layer. The possibility of freely setting the Ge proportion x enables a threshold voltage to be set as desired, whereby modern logic semiconductor components can be realized.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: January 31, 2012
    Assignee: Infineon Technologies AG
    Inventor: Klaus Schruefer
  • Patent number: 8067808
    Abstract: A memory cell includes a FinFET select device and a memory element. In some embodiments a memory cell has a contact element coupled between a surface of the fin and the memory element.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: November 29, 2011
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Klaus Schruefer
  • Patent number: 8039904
    Abstract: A memory cell includes a FinFET select device and a memory element. In some embodiments a memory cell has a contact element coupled between a surface of the fin and the memory element.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: October 18, 2011
    Assignee: Infineon Technologies AG
    Inventors: Ronald Kakoschke, Klaus Schruefer
  • 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
  • Publication number: 20110095347
    Abstract: Some embodiments relate to an apparatus that exhibits vertical diode activity to occur between a semiconductive body and an epitaxial film that is disposed over a doping region of the semiconductive body. Some embodiments include an apparatus that causes both vertical and lateral diode activity. Some embodiments include a gated vertical diode for a finned semiconductor apparatus. Process embodiments include the formation of vertical-diode apparatus.
    Type: Application
    Filed: January 7, 2011
    Publication date: April 28, 2011
    Applicant: Infineon Technologies AG
    Inventors: Christian Russ, Christian Pacha, Snezana Jenei, Klaus Schruefer
  • 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
  • Patent number: 7888775
    Abstract: Some embodiments relate to an apparatus that exhibits vertical diode activity to occur between a semiconductive body and an epitaxial film that is disposed over a doping region of the semiconductive body. Some embodiments include an apparatus that causes both vertical and lateral diode activity. Some embodiments include a gated vertical diode for a finned semiconductor apparatus. Process embodiments include the formation of vertical-diode apparatus.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: February 15, 2011
    Assignee: Infineon Technologies AG
    Inventors: Christian Russ, Christian Pacha, Snezana Jenei, Klaus Schruefer
  • Publication number: 20110031530
    Abstract: A field effect transistor with a heterostructure includes a strained monocrystalline semiconductor layer formed on a carrier material, which has a relaxed monocrystalline semiconductor layer made of a first semiconductor material (Si) as the topmost layer. The strained monocrystalline semiconductor layer has a semiconductor alloy (GexSi1-x), where the proportion x of a second semiconductor material can be set freely. Furthermore, a gate insulation layer and a gate layer are formed on the strained semiconductor layer. To define an undoped channel region, drain/source regions are formed laterally with respect to the gate layer at least in the strained semiconductor layer. The possibility of freely setting the Ge proportion x enables a threshold voltage to be set as desired, whereby modern logic semiconductor components can be realized.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 10, 2011
    Inventor: Klaus Schruefer
  • 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
  • Patent number: 7824993
    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: Grant
    Filed: April 28, 2009
    Date of Patent: November 2, 2010
    Assignee: Infineon Technologies AG
    Inventors: Juergen Holz, Klaus Schruefer, Helmut Tews
  • Publication number: 20100252895
    Abstract: A memory cell includes a FinFET select device and a memory element. In some embodiments a memory cell has a contact element coupled between a surface of the fin and the memory element.
    Type: Application
    Filed: May 21, 2010
    Publication date: October 7, 2010
    Inventors: Ronald KAKOSCHKE, Klaus SCHRUEFER
  • Publication number: 20100252799
    Abstract: A memory cell includes a FinFET select device and a memory element. In some embodiments a memory cell has a contact element coupled between a surface of the fin and the memory element.
    Type: Application
    Filed: May 21, 2010
    Publication date: October 7, 2010
    Inventors: Ronald KAKOSCHKE, Klaus SCHRUEFER
  • Patent number: 7804110
    Abstract: A field effect transistor with a heterostructure includes a strained monocrystalline semiconductor layer formed on a carrier material, which has a relaxed monocrystalline semiconductor layer made of a first semiconductor material (Si) as the topmost layer. The strained monocrystalline semiconductor layer has a semiconductor alloy (GexSi1?x), where the proportion x of a second semiconductor material can be set freely. Furthermore, a gate insulation layer and a gate layer are formed on the strained semiconductor layer. To define an undoped channel region, drain/source regions are formed laterally with respect to the gate layer at least in the strained semiconductor layer. The possibility of freely setting the Ge proportion x enables a threshold voltage to be set as desired, whereby modern logic semiconductor components can be realized.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: September 28, 2010
    Assignee: Infineon Technologies AG
    Inventor: Klaus Schruefer
  • Publication number: 20100193867
    Abstract: A preferred embodiment includes a method of manufacturing a fuse element that includes forming a polysilicon layer over a semiconductor structure, doping the polysilicon layer with carbon or nitrogen, depositing a metal over the polysilicon layer; and annealing the metal and polysilicon layer to form a silicide in an upper portion of the polysilicon layer.
    Type: Application
    Filed: February 3, 2009
    Publication date: August 5, 2010
    Inventors: Jiang Yan, Henning Haffiner, Frank Huebinger, SunOo Kim, Richard Lindsay, Klaus Schruefer
  • Patent number: 7723786
    Abstract: A memory cell includes a FinFET select device and a memory element. In some embodiments a memory cell has a contact element coupled between a surface of the fin and the memory element.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: May 25, 2010
    Inventors: Ronald Kakoschke, Klaus Schruefer
  • Publication number: 20090309167
    Abstract: Embodiments relate to a bipolar transistor that includes a body region having a fin structure. At least one terminal region may be formed over at least a portion of the body region. The at least one terminal region may be formed as an epitaxially grown region. Embodiments also relate to a vertically integrated electronic device that includes a first terminal region, a second terminal region and a third terminal region. The second terminal region may be arranged over at least a portion of the third terminal region, and at least two of the first, second and third terminal regions may be formed as epitaxially grown regions.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 17, 2009
    Inventors: Christian Russ, Christian Pacha, Snezana Jenei, Klaus Schruefer
  • Publication number: 20090121289
    Abstract: A field effect transistor with a heterostructure includes a strained monocrystalline semiconductor layer formed on a carrier material, which has a relaxed monocrystalline semiconductor layer made of a first semiconductor material (Si) as the topmost layer. The strained monocrystalline semiconductor layer has a semiconductor alloy (GexSi1 -x),where the proportion x of a second semiconductor material can be set freely. Furthermore, a gate insulation layer and a gate layer are formed on the strained semiconductor layer. To define an undoped channel region, drain/source regions are formed laterally with respect to the gate layer at least in the strained semiconductor layer. The possibility of freely setting the Ge proportion x enables a threshold voltage to be set as desired, whereby modern logic semiconductor components can be realized.
    Type: Application
    Filed: January 13, 2009
    Publication date: May 14, 2009
    Inventor: Klaus Schruefer