Patents by Inventor Johannes Laven

Johannes Laven 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: 20150235853
    Abstract: A description is given of a method for doping a semiconductor body, and a semiconductor body produced by such a method. The method comprises irradiating the semiconductor body with protons and irradiating the semiconductor body with electrons. After the process of irradiating with protons and after the process of irradiating with electrons, the semiconductor body is subjected to heat treatment in order to attach the protons to vacancies by means of diffusion.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Inventors: Hans-Joachim Schulze, Johannes Laven, Franz Josef Niedernostheide, Frank Dieter Pfirsch
  • Patent number: 9105487
    Abstract: A super junction semiconductor device includes a substrate layer of a first conductivity type and an epitaxial layer adjoining the substrate layer and including first columns of the first conductivity type and second columns of a second conductivity type. The first and second columns extend along a main crystal direction into the epitaxial layer and have vertical dopant profiles perpendicular to the first surface. The vertical dopant profile of at least one of the first and second columns includes first portions separated by second portions. In each of the first portions a dopant concentration varies by at most 30% of a maximum value within the respective first portion. In the second portions the dopant concentration is lower than in the adjoining first portions. A ratio of a total length of the first portions to a total length of the first and second portions is at least 50%.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: August 11, 2015
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Dieter Fuchs, Werner Schustereder, Roman Knoefler
  • Patent number: 9054035
    Abstract: A description is given of a method for doping a semiconductor body, and a semiconductor body produced by such a method. The method comprises irradiating the semiconductor body with protons and irradiating the semiconductor body with electrons. After the process of irradiating with protons and after the process of irradiating with electrons, the semiconductor body is subjected to heat treatment in order to attach the protons to vacancies by means of diffusion.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: June 9, 2015
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Franz Josef Niedernostheide, Frank Dieter Pfirsch
  • Publication number: 20150041963
    Abstract: According to one embodiment of a semiconductor device, the semiconductor device includes a semiconductor substrate having a first surface, an insulation layer having a laterally varying thickness on the first surface, and a metal layer on the first surface. The insulation layer has ripples in its surface facing the metal layer. According to another embodiment of a semiconductor device, the semiconductor device includes a semiconductor substrate having a first surface and including at least one of a laterally varying thickness and an inclined first surface. The first surface of the semiconductor substrate has ripples.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Hans-Joachim Schulze, Johannes Laven, Holger Schulze
  • Patent number: 8895453
    Abstract: A layer with a laterally varying thickness, a substrate with a first surface and an insulation layer formed on the first surface of the substrate is provided. A plurality of at least one of recesses and openings is formed in the insulation layer, wherein the plurality is arranged at a pitch. Each of the at least one of recesses and openings has a lateral width, wherein at least one of the pitch and the lateral width varies in a lateral direction. The plurality of the at least one of recesses and openings defines a given region in the insulation layer. The insulation layer having the plurality of the at least one of the recesses and openings is tempered at elevated temperatures so that the insulation layer at least partially diffluences to provide the insulation layer with a laterally varying thickness at least in the given region.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: November 25, 2014
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Holger Schulze
  • Publication number: 20140175593
    Abstract: A super junction semiconductor device includes a substrate layer of a first conductivity type and an epitaxial layer adjoining the substrate layer and including first columns of the first conductivity type and second columns of a second conductivity type. The first and second columns extend along a main crystal direction into the epitaxial layer and have vertical dopant profiles perpendicular to the first surface. The vertical dopant profile of at least one of the first and second columns includes first portions separated by second portions. In each of the first portions a dopant concentration varies by at most 30% of a maximum value within the respective first portion. In the second portions the dopant concentration is lower than in the adjoining first portions. A ratio of a total length of the first portions to a total length of the first and second portions is at least 50%.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 26, 2014
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Dieter Fuchs, Werner Schustereder, Roman Knoefler
  • Publication number: 20140151858
    Abstract: A description is given of a method for doping a semiconductor body, and a semiconductor body produced by such a method. The method comprises irradiating the semiconductor body with protons and irradiating the semiconductor body with electrons. After the process of irradiating with protons and after the process of irradiating with electrons, the semiconductor body is subjected to heat treatment in order to attach the protons to vacancies by means of diffusion.
    Type: Application
    Filed: October 18, 2013
    Publication date: June 5, 2014
    Inventors: Hans-Joachim Schulze, Johannes Laven, Franz Josef Niedernostheide, Frank Dieter Pfirsch
  • Publication number: 20140117502
    Abstract: A method for processing a semiconductor carrier is provided, the method including: providing a semiconductor carrier including a doped substrate region and a device region disposed over a first side of the doped substrate region, the device region including at least part of one or more electrical devices; and implanting ions into the doped substrate region to form a gettering region in the doped substrate region of the semiconductor carrier.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 1, 2014
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Johannes Laven, Hans-Joachim Schulze
  • Patent number: 8710620
    Abstract: A manufacturing method provides a semiconductor device with a substrate layer and an epitaxial layer adjoining the substrate layer. The epitaxial layer includes first columns and second columns of different conductivity types. The first and second columns extend along a main crystal direction along which channeling of implanted ions occurs from a first surface into the epitaxial layer. A vertical dopant profile of one of the first and second columns includes first portions separated by second portions. In the first portions a dopant concentration varies by at most 30%. In the second portions the dopant concentration is lower than in the first portions. The ratio of a total length of the first portions to the total length of the first and second portions is at least 50%. The uniform dopant profiles improve device characteristics.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: April 29, 2014
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Dieter Fuchs, Werner Schustereder, Roman Knoefler
  • Publication number: 20140021590
    Abstract: A manufacturing method provides a semiconductor device with a substrate layer and an epitaxial layer adjoining the substrate layer. The epitaxial layer includes first columns and second columns of different conductivity types. The first and second columns extend along a main crystal direction along which channeling of implanted ions occurs from a first surface into the epitaxial layer. A vertical dopant profile of one of the first and second columns includes first portions separated by second portions. In the first portions a dopant concentration varies by at most 30%. In the second portions the dopant concentration is lower than in the first portions. The ratio of a total length of the first portions to the total length of the first and second portions is at least 50%. The uniform dopant profiles improve device characteristics.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 23, 2014
    Applicant: Infineon Technologies AG
    Inventors: Hans-Joachim Schulze, Johannes Laven, Dieter Fuchs, Werner Schustereder, Roman Knoefler