Patents by Inventor Herbert Schäfer

Herbert Schäfer 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: 8178966
    Abstract: An integrated circuit arrangement and method of fabricating the integrated circuit arrangement is provided. At least one integrated electronic component is arranged at a main area of a substrate. The component is arranged in the substrate or is isolated from the substrate by an electrically insulating region. Main channels are formed in the substrate and arranged along the main area. Each main channel is completely surrounded by the substrate transversely with respect to a longitudinal axis. Transverse channels are arranged transversely with respect to the main channels. Each transverse channel opens into at least one main channel. More than about ten transverse channels open into a main channel.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: May 15, 2012
    Assignee: Infineon Technologies AG
    Inventors: Volker Lehmann, Reinhard Stengl, Herbert Schäfer
  • Publication number: 20120074405
    Abstract: One embodiment of the present invention relates to method for the concurrent deposition of multiple different crystalline structures on a semiconductor body utilizing in-situ differential epitaxy. In one embodiment of the present invention a preparation surface is formed, resulting in two distinct crystalline regions, a monocrystalline silicon substrate region and an isolating layer region. A monocrystalline silicon layer and an amorphous silicon layer are concurrently formed directly onto the preparation surface in the monocrystalline silicon substrate region and the isolating layer region, respectively. Deposition comprises the formation of two or more sub-layers. The process parameters can be varied for each individual sub-layer to optimize deposition characteristics.
    Type: Application
    Filed: December 8, 2011
    Publication date: March 29, 2012
    Applicant: Infineon Technologies AG
    Inventors: Herbert Schäfer, Martin Franosch, Thomas Meister, Josef Böck
  • Publication number: 20120023478
    Abstract: A method replaces a controller, particularly a faulty and/or outmoded controller, in an onboard power supply system in a vehicle. The controller to be replaced is replaced by a functional and/or new controller. The controller to be replaced and the new controller are operated by incompatible operating software. In the method at least one software component is exported from a software development environment for the operating software of the controller to be replaced by a data processing apparatus. The software component is converted into a code, which can be imported into a software development environment for the operating software of the functional and/or new controller, by the data processing apparatus. The code is imported into the software development environment of the operating software of the functional and/or new controller by the data processing apparatus. The operating software for the new controller is produced on the basis of the imported code.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 26, 2012
    Applicant: MAN TRUCK & BUS AG
    Inventors: Herbert Schäfer, Marc Witte
  • Patent number: 8102052
    Abstract: One embodiment of the present invention relates to method for the concurrent deposition of multiple different crystalline structures on a semiconductor body utilizing in-situ differential epitaxy. In one embodiment of the present invention a preparation surface is formed, resulting in two distinct crystalline regions, a monocrystalline silicon substrate region and an isolating layer region. A monocrystalline silicon layer and an amorphous silicon layer are concurrently formed directly onto the preparation surface in the monocrystalline silicon substrate region and the isolating layer region, respectively. Deposition comprises the formation of two or more sub-layers. The process parameters can be varied for each individual sub-layer to optimize deposition characteristics.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: January 24, 2012
    Assignee: Infineon Technologies AG
    Inventors: Herbert Schäfer, Martin Franosch, Thomas Meister, Josef Böck
  • Patent number: 8003475
    Abstract: A method for fabricating a transistor structure with a first and a second bipolar transistor having different collector widths is presented. The method includes providing a semiconductor substrate, introducing a first buried layer of the first bipolar transistor and a second buried layer of the second bipolar transistor into the semiconductor substrate, and producing at least a first collector region having a first collector width on the first buried layer and a second collector region having a second collector width on the second buried layer. A first collector zone having a first thickness is produced on the second buried layer for production of the second collector width. A second collector zone having a second thickness is produced on the first collector zone. At least one insulation region is produced that isolates at least the collector regions from one another.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 23, 2011
    Assignee: Infineon Technologies AG
    Inventors: Josef Böck, Rudolf Lachner, Thomas Meister, Reinhard Stengl, Herbert Schäfer, Martin Seck
  • Patent number: 7968972
    Abstract: A high-frequency bipolar transistor includes an emitter contact adjoining an emitter connection region, a base contact adjoining a base connection region, and a collector contact adjoining a collector connection region. A first insulation layer is disposed on the base connection region. The collector connection region contains a buried layer, which connects the collector contact to a collector zone. A silicide or salicide region is provided on the buried layer and connects the collector contact to the collector zone in a low-impedance manner. A second insulation layer is disposed on the collector connection region but not on the silicide region.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: June 28, 2011
    Assignee: Infineon Technologies AG
    Inventors: Josef Böck, Thomas Meister, Reinhard Stengl, Herbert Schäfer
  • Publication number: 20110133188
    Abstract: One embodiment of the present invention relates to method for the concurrent deposition of multiple different crystalline structures on a semiconductor body utilizing in-situ differential epitaxy. In one embodiment of the present invention a preparation surface is formed, resulting in two distinct crystalline regions, a monocrystalline silicon substrate region and an isolating layer region. A monocrystalline silicon layer and an amorphous silicon layer are concurrently formed directly onto the preparation surface in the monocrystalline silicon substrate region and the isolating layer region, respectively. Deposition comprises the formation of two or more sub-layers. The process parameters can be varied for each individual sub-layer to optimize deposition characteristics.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: Infineon Technologies AG
    Inventors: Herbert Schäfer, Martin Franosch, Thomas Meister, Josef Böck
  • Patent number: 7947552
    Abstract: One embodiment of the present invention relates to method for the concurrent deposition of multiple different crystalline structures on a semiconductor body utilizing in-situ differential epitaxy. In one embodiment of the present invention a preparation surface is formed, resulting in two distinct crystalline regions, a monocrystalline silicon substrate region and an isolating layer region. A monocrystalline silicon layer and an amorphous silicon layer are concurrently formed directly onto the preparation surface in the monocrystalline silicon substrate region and the isolating layer region, respectively. Deposition comprises the formation of two or more sub-layers. The process parameters can be varied for each individual sub-layer to optimize deposition characteristics.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: May 24, 2011
    Assignee: Infineon Technologies AG
    Inventors: Herbert Schäfer, Martin Franosch, Thomas Meister, Josef Böck
  • Publication number: 20110042046
    Abstract: An integrated circuit arrangement and method of fabricating the integrated circuit arrangement is provided. At least one integrated electronic component is arranged at a main area of a substrate. The component is arranged in the substrate or is isolated from the substrate by an electrically insulating region. Main channels are formed in the substrate and arranged along the main area. Each main channel is completely surrounded by the substrate transversely with respect to a longitudinal axis. Transverse channels are arranged transversely with respect to the main channels. Each transverse channel opens into at least one main channel. More than about ten transverse channels open into a main channel.
    Type: Application
    Filed: November 5, 2010
    Publication date: February 24, 2011
    Inventors: Volker Lehmann, Reinhard Stengl, Herbert Schäfer
  • Patent number: 7719088
    Abstract: A high-frequency bipolar transistor includes an emitter contact adjoining an emitter connection region, a base contact adjoining a base connection region, and a collector contact adjoining a collector connection region. A first insulation layer is disposed on the base connection region. The collector connection region contains a buried layer, which connects the collector contact to a collector zone. A silicide or salicide region is provided on the buried layer and connects the collector contact to the collector zone in a low-impedance manner. A second insulation layer is disposed on the collector connection region but not on the silicide region.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: May 18, 2010
    Assignee: Infineon Technologies AG
    Inventors: Josef Böck, Thomas Meister, Reinhard Stengl, Herbert Schäfer
  • Patent number: 7612430
    Abstract: The silicon bipolar transistor (100) comprises a base, with a first highly-doped base layer (105) and a second poorly-doped base layer (106) which together form the base. The emitter is completely highly-doped and mounted directly on the second base layer (106).
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: November 3, 2009
    Assignee: Infineon Technologies AG
    Inventors: Martin Franosch, Thomas Meister, Herbert Schäfer, Reinhard Stengl, Konrad Wolf
  • Patent number: 7459365
    Abstract: The fabrication of a semiconductor component having a semiconductor body in which is arranged a very thin dielectric layer having sections which run in the vertical direction and which extend very deeply into the semiconductor body is disclosed. In one method a trench is formed in a drift zone region proceeding from the front side of a semiconductor body, a sacrificial layer is produced on at least a portion of the sidewalls of the trench and at least a portion of the trench is filled with a semiconductor material which is chosen such that the quotient of the net dopant charge of the semiconductor material in the trench and the total area of the sacrificial layer on the sidewalls of the trench between the semiconductor material and the drift zone region is less than the breakdown charge of the semiconductor material, and the sacrificial layer is replaced with a dielectric.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 2, 2008
    Assignee: Infineon Technologies Austria AG
    Inventors: Michael Rüb, Herbert Schäfer, Armin Willmeroth, Anton Mauder, Stefan Sedlmaier, Roland Rupp, Manfred Pippan, Hans Weber, Frank Pfirsch, Franz Hirler, Hans-Joachim Schulze
  • Patent number: 7449389
    Abstract: A method for fabricating a semiconductor including defining a first component region and a second component region in a semiconductor body is provided. A first epitaxial layer is formed through the first component region. A second epitaxial layer is formed over the first epitaxial layer, including configuring the physical dimensions of a first active zone of the first component region independent of a second active zone of the second component region via the first epitaxial layer and the second epitaxial layer. In one embodiment, the first component is a radio-frequency transistor and the second component is a varactor.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: November 11, 2008
    Assignee: Infineon Technologies AG
    Inventors: Thomas Meister, Herbert Schäfer, Josef Böck, Rudolf Lachner
  • Patent number: 7371650
    Abstract: A method for fabricating a transistor structure with a first and a second bipolar transistor having different collector widths is presented. The method includes providing a semiconductor substrate, introducing a first buried layer of the first bipolar transistor and a second buried layer of the second bipolar transistor into the semiconductor substrate, and producing at least a first collector region having a first collector width on the first buried layer and a second collector region having a second collector width on the second buried layer. A first collector zone having a first thickness is produced on the second buried layer for production of the second collector width. A second collector zone having a second thickness is produced on the first collector zone. At least one insulation region is produced that isolates at least the collector regions from one another.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: May 13, 2008
    Assignee: Infineon Technologies AG
    Inventors: Josef Böck, Rudolf Lachner, Thomas Meister, Reinhard Stengl, Herbert Schäfer, Martin Seck
  • Patent number: 7256472
    Abstract: A bipolar transistor and method of making a bipolar transistor is disclosed. In one embodiment, the bipolar transistor includes a polysilicon layer into which impurity atoms are inserted, thereby reducing the layer resistance.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: August 14, 2007
    Assignee: Infineon Technologies AG
    Inventors: Josef Bock, Thomas Meister, Andriy Romanyuk, Herbert Schäfer
  • Patent number: 7135757
    Abstract: A bipolar transistor includes a first layer with a collector. A second layer has a base cutout for a base. A third layer includes a lead for the base. The third layer is formed with an emitter cutout for an emitter. An undercut is formed in the second layer adjoining the base cutout. The base is at least partially located in the undercut. In order to obtain a low transition resistance between the lead and the base, an intermediate layer is provided between the first and the second layer. The intermediate layer is selectively etchable with respect to the second layer. At least in the region of the undercut between the lead and the base, a base connection zone is provided that can be adjusted independent of other production conditions. The intermediate layer is removed in a contact region with the base.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 14, 2006
    Assignee: Infineon Technologies AG
    Inventors: Reinhard Stengl, Thomas Meister, Herbert Schäfer, Martin Franosch
  • Patent number: 6995416
    Abstract: The invention provides a memory device for storing electrical charge, which has, as memory elements, tube elements applied on an electrode layer and connect-connected thereto. The tube elements are provided with a dielectric coating, a filling material for filling the space between the tube elements being provided. A counter-electrode connected to the filling material is formed such that an electrical capacitor for storing electrical charge is formed between the electrode layer and the counter-electrode. The tube elements advantageously comprise carbon nanotubes, as a result of which the capacitance of the capacitor on account of a drastic increase in the area of the capacitor electrode surface.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: February 7, 2006
    Assignee: Infineon Technologies AG
    Inventors: Hans Reisinger, Reinhard Stengl, Herbert Schäfer
  • Patent number: 6909141
    Abstract: A vertical semiconductor transistor component is built up on a substrate by using a statistical mask. The vertical semiconductor transistor component has vertical pillar structures statistically distributed over the substrate. The vertical pillar structures are electrically connected on a base side thereof to a first common electrical contact. The vertical pillar structures include, along the vertical direction, layer zones of differing conductivity, and have insulation layers on their circumferential walls. An electrically conductive material is deposited between the pillar structures and forms a second electrical contact of the semiconductor transistor component. The pillar structures are electrically contacted to a third common electrical contact on their capping side.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 21, 2005
    Assignee: Infineon Technologies AG
    Inventors: Wolfgang Rösner, Thomas Schulz, Lothar Risch, Thomas Äugle, Herbert Schäfer, Martin Franosch
  • Patent number: 6867105
    Abstract: A bipolar transistor includes a first layer with a collector. A second layer has a base cutout for a base. A third layer includes a lead for the base. The third layer is formed with an emitter cutout for an emitter. An undercut is formed in the second layer adjoining the base cutout. The base is at least partially located in the undercut. In order to obtain a low transition resistance between the lead and the base, an intermediate layer is provided between the first and the second layer. The intermediate layer is selectively etchable with respect to the second layer. At least in the region of the undercut between the lead and the base, a base connection zone is provided that can be adjusted independent of other production conditions. The intermediate layer is removed in a contact region with the base.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: March 15, 2005
    Assignee: Infineon Technologies AG
    Inventors: Reinhard Stengl, Thomas Meister, Herbert Schäfer, Martin Franosch
  • Patent number: 6635545
    Abstract: The bipolar transistor is produced such that a connection region of its base is provided with a silicide layer, so that a base resistance of the bipolar transistor is small. No silicide layer is produced between an emitter and an emitter contact and between a connection region of a collector and a collector contact. The base is produced by in situ-doped epitaxy in a region in which a first insulating layer is removed by isotropic etching such that the connection region of the base which is arranged on the first insulating layer is undercut. In order to avoid defects of a substrate in which the bipolar transistor is partly produced, isotropic etching is used for the patterning of auxiliary layers, whereby etching is selective with respect to auxiliary layers lying above, which are patterned by anisotropic etching.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: October 21, 2003
    Assignee: Infineon Technologies AG
    Inventors: Josef Böck, Wolfgang Klein, Herbert Schäfer, Martin Franosch, Thomas Meister, Reinhard Stengl