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).

  • 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: 20090101975
    Abstract: An explanation is given of, inter alia, tunnel field effect transistors having a thicker gate dielectric (GD1) in comparison with other transistors (T2) on the same integrated circuit arrangement (10). As an alternative or in addition, said tunnel field effect transistors have gate regions at mutually remote sides of a channel forming region or an interface between the connection regions (D1, S1) of the tunnel field effect transistor.
    Type: Application
    Filed: December 9, 2005
    Publication date: April 23, 2009
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Juergen Holz, Ronald Kakoschke, Thomas Nirschl, Christian Pacha, Klaus Schruefer, Thomas Schulz, Doris Schmitt-Landsiedel
  • Publication number: 20090085163
    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: September 27, 2007
    Publication date: April 2, 2009
    Inventors: Christian Russ, Christian Pacha, Snezana Jenei, Klaus Schruefer
  • Patent number: 7491612
    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: June 23, 2006
    Date of Patent: February 17, 2009
    Assignee: Infineon Technologies AG
    Inventor: Klaus Schruefer
  • Publication number: 20080283925
    Abstract: In a first embodiment, a multi-fin component arrangement has a plurality of multi-fin component partial arrangements. Each of the multi-fin component partial arrangements has a plurality of electronic components, which electronic components have a multi-fin structure. At least one multi-fin component partial arrangement has at least one dummy structure, which at least one dummy structure is formed between at least two of the electronic components formed in the at least one multi-fin component partial arrangement. The dummy structure is formed in such a way that electrical characteristics of the electronic components formed in the multi-fin component partial arrangements are adapted to one another.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 20, 2008
    Inventors: Joerg Berthold, Christian Pacha, Klaus Schruefer, Klaus Von Arnim
  • 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: 20080251779
    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: April 11, 2007
    Publication date: October 16, 2008
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Ronald Kakoschke, Klaus Schruefer
  • Publication number: 20070013002
    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: June 23, 2006
    Publication date: January 18, 2007
    Inventor: Klaus Schruefer
  • Publication number: 20040053439
    Abstract: A method of fabricating a semiconductor connective region of a first conductivity type through a semiconductor layer of a second conductivity type which at least partly separates a bulk portion of semiconductor body (substrate) of the first conductivity type from a semiconductor well of the first conductivity type includes a step of implanting ions into a portion of the layer to convert the conductivity of the implanted portion to the first conductivity type. This electrically connects the well to the bulk portion of the body. Any biasing potential applied to the bulk portion of the body is thus applied to the well. This eliminates any need to form a contact in the well for biasing the well and thus allows the well to be reduced in size.
    Type: Application
    Filed: September 17, 2002
    Publication date: March 18, 2004
    Applicant: Infineon Technologies North America Corp.
    Inventors: Thomas Schafbauer, Klaus Schruefer, Odin Prigge, Reinhard Mahnkopf, Walter Neumueller