Patents by Inventor Renate Bergmann

Renate Bergmann 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: 7615770
    Abstract: A memory cell includes a first electrode, a second electrode, and phase-change material between the first electrode and the second electrode. The phase-change material defines a narrow region. The memory cell includes first insulation material having a first thermal conductivity and contacting the phase-change material. A maximum thickness of the first insulation material contacts the narrow region. The memory cell includes a second insulation material having a second thermal conductivity greater than the first thermal conductivity and contacting the first insulation material.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: November 10, 2009
    Assignee: Infineon Technologies AG
    Inventors: Jan Boris Philipp, Thomas Happ, Renate Bergmann
  • Publication number: 20070096248
    Abstract: A memory cell includes a first electrode, a second electrode, and phase-change material between the first electrode and the second electrode. The phase-change material defines a narrow region. The memory cell includes first insulation material having a first thermal conductivity and contacting the phase-change material. A maximum thickness of the first insulation material contacts the narrow region. The memory cell includes a second insulation material having a second thermal conductivity greater than the first thermal conductivity and contacting the first insulation material.
    Type: Application
    Filed: October 27, 2005
    Publication date: May 3, 2007
    Inventors: Jan Philipp, Thomas Happ, Renate Bergmann
  • Patent number: 6500677
    Abstract: The invention provides a method. In a first step of a method for fabricating a ferroelectric memory configuration, there is provided a substrate having a multiplicity of memory cells. Each of the memory cells has at least one select transistor, at least one short-circuit transistor, and at least one ferroelectric capacitor. The transistors are connected in an electrically conductive manner to a first of the electrodes of the ferroelectric capacitor. In the next step, at least one electrically insulating layer is applied. In the next step, at least one contact hole for connecting a second electrode of the ferroelectric capacitors is produced. Next, contact holes for connecting the short-circuit transistors are produced. Next, the contact holes are filled with electrically conductive material. Next, an electrically conductive layer is applied and patterned, so that the second electrodes of the ferroelectric capacitors are each conductively connected to the short-circuit transistors.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: December 31, 2002
    Assignee: Infineon Technologies AG
    Inventors: Renate Bergmann, Christine Dehm, Thomas Roehr, Georg Braun, Heinz Hoenigschmid, Günther Schindler
  • Publication number: 20020110935
    Abstract: The invention provides a method. In a first step of a method for fabricating a ferroelectric memory configuration, there is provided a substrate having a multiplicity of memory cells. Each of the memory cells has at least one select transistor, at least one short-circuit transistor, and at least one ferroelectric capacitor. The transistors are connected in an electrically conductive manner to a first of the electrodes of the ferroelectric capacitor. In the next step, at least one electrically insulating layer is applied. In the next step, at least one contact hole for connecting a second electrode of the ferroelectric capacitors is produced. Next, contact holes for connecting the short-circuit transistors are produced. Next, the contact holes are filled with electrically conductive material. Next, an electrically conductive layer is applied and patterned, so that the second electrodes of the ferroelectric capacitors are each conductively connected to the short-circuit transistors.
    Type: Application
    Filed: December 26, 2001
    Publication date: August 15, 2002
    Inventors: Renate Bergmann, Christine Dehm, Thomas Roehr, Georg Braun, Heinz Hoenigschmid, Gunther Schindler