Patents by Inventor Stefan Flachowsky

Stefan Flachowsky 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: 9231045
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an embodiment, an integrated circuit includes a first transistor structure that includes an etch-stop material layer, a first workfunction material layer disposed over the etch-stop material layer, a second workfunction material layer disposed over the first workfunction material layer, and a metal fill material disposed over the second workfunction material layer. The integrated circuit further includes a second transistor structure that includes a layer of the etch-stop material, a layer of the second workfunction material disposed over the etch-stop material layer, and a layer of the metal fill material disposed over the second workfunction material layer. Still further, the integrated circuit includes a resistor structure that includes a layer of the etch-stop material, a layer of the metal fill material disposed over the etch-stop material layer, and a silicon material layer disposed over the metal fill material layer.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 5, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Jan Hoentschel, Stefan Flachowsky, Nicolas Sassiat, Ralf Richter
  • Patent number: 9224655
    Abstract: One illustrative method disclosed herein includes the steps of forming a masking layer that covers a P-type transistor and exposes at least a gate cap layer of an N-type transistor, performing a first etching process through the masking layer to remove a portion of the gate cap of the N-type transistor so as to thereby define a reduced thickness gate cap layer for the N-type transistor, removing the masking layer, and performing a common second etching process on the P-type transistor and the N-type transistor that removes a gate cap layer of the P-type transistor and the reduced thickness gate cap of the N-type transistor.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 29, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Peter Javorka, Ralf Richter, Stefan Flachowsky, Jan Hoentschel
  • Patent number: 9224840
    Abstract: A method is disclosed for fabricating an integrated circuit in a replacement-gate process flow utilizing a dummy-gate structure overlying a plurality of fin structures. The method includes removing the dummy-gate structure to form a first void space, depositing a shaper material to fill the first void space, removing a portion of the plurality of fin structures to form a second void space, epitaxially growing a high carrier mobility material to fill the second void space, removing the shaper material to form a third void space, and depositing a replacement metal gate material to fill the third void space.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 29, 2015
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
  • Publication number: 20150372100
    Abstract: Integrated circuits having improved contacts and improved methods for fabricating integrated circuits having contacts are provided. In an embodiment, a method for fabricating an integrated circuit includes providing a semiconductor substrate with a source/drain region. The method deposits an interlayer dielectric material over the semiconductor substrate. Further, the method etches the interlayer dielectric material to form a hole defining an exposed portion of the source/drain region. The method includes forming a contact forming a contact in the hole over the exposed portion of the source/drain region and forming an interconnect in the hole over the contact.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Gerd Zschätzsch, Stefan Flachowsky, Jan Hoentschel
  • Patent number: 9219013
    Abstract: When forming semiconductor devices including transistors with different threshold voltages, the different threshold voltages of transistors of the same conductivity type are substantially defined by performing different halo implantations. As the other implantations performed typically in the same manufacturing step, such as pre-amorphization, source and drain extension implantation and extra diffusion engineering implantations, may be identical for different threshold voltages, these implantations, in addition to a common halo base implantation, may be performed for all transistors of the same conductivity type in a common implantation sequence. Higher threshold voltages of specific transistors may be subsequently achieved by an additional low-dose halo implantation while the other transistors are covered by a resist mask. Thus, the amount of atoms of the implant species in the required resist masks is reduced so that removal of the resist masks is facilitated.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 22, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Martin Gerhardt, Stefan Flachowsky, Matthias Kessler
  • Patent number: 9218976
    Abstract: When forming field-effect transistors, a common problem is the formation of a Schottky barrier at the interface between a metal thin film in the gate electrode and a semiconductor material, typically polysilicon, formed thereupon. Fully silicided gates are known in the state of the art, which may overcome this problem. However, formation of a fully silicided gate is hindered by the fact that silicidation of the source and drain regions and of the gate electrode are normally performed simultaneously. The claimed method proposes two consecutive silicidation processes which are decoupled with respect to each other. During the first silicidation process, a metal silicide is formed forming an interface with the source and drain regions and without affecting the gate electrode. During the second silicidation, a metal silicide layer having an interface with the gate electrode is formed, without affecting the transistor source and drain regions.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: December 22, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Gerd Zschaetzsch, Jan Hoentschel
  • Patent number: 9214396
    Abstract: A method of forming a transistor device is provided, including the subsequently performed steps of forming a gate electrode on a first semiconductor layer, forming an interlayer dielectric over the gate electrode and the first semiconductor layer, forming a first opening in the interlayer dielectric at a predetermined distance laterally spaced from the gate electrode on one side of the gate electrode and a second opening in the interlayer dielectric at a predetermined distance laterally spaced from the gate electrode on another side of the gate electrode, the first and second openings reaching to the first semiconductor layer, forming cavities in the first semiconductor layer through the first and second openings formed in the interlayer dielectric, and forming embedded second semiconductor layers in the cavities.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: December 15, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel, Gerd Zschaetzsch
  • Patent number: 9209274
    Abstract: The present disclosure provides in various aspects methods of forming a semiconductor device, methods for forming a semiconductor device structure, a semiconductor device and a semiconductor device structure. In some illustrative embodiments herein, a gate structure is formed over a non-planar surface portion of a semiconductor material provided on a surface of a substrate. A doped spacer-forming material is formed over the gate structure and the semiconductor material and dopants incorporated in the doped spacer-forming material are diffused into the semiconductor material close to a surface of the semiconductor material so as to form source/drain extension regions. The fabricated semiconductor devices may be multi-gate devices and, for example, comprise finFETs and/or wireFETs.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: December 8, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Gerd Zschaetzsch, Stefan Flachowsky, Dominic Thurmer
  • Publication number: 20150348849
    Abstract: A method of forming a transistor device is provided, including the subsequently performed steps of forming a gate electrode on a first semiconductor layer, forming an interlayer dielectric over the gate electrode and the first semiconductor layer, forming a first opening in the interlayer dielectric at a predetermined distance laterally spaced from the gate electrode on one side of the gate electrode and a second opening in the interlayer dielectric at a predetermined distance laterally spaced from the gate electrode on another side of the gate electrode, the first and second openings reaching to the first semiconductor layer, forming cavities in the first semiconductor layer through the first and second openings formed in the interlayer dielectric, and forming embedded second semiconductor layers in the cavities.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 3, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel, Gerd Zschaetzsch
  • Publication number: 20150340380
    Abstract: A structure comprises a semiconductor substrate, a semiconductor-on-insulator region and a bulk region. The semiconductor-on-insulator region comprises a first semiconductor region, a dielectric layer provided between the semiconductor substrate and the first semiconductor region, and a first transistor comprising an active region provided in the first semiconductor region. The dielectric layer provides electrical isolation between the first semiconductor region and the semiconductor substrate. The bulk region comprises a second semiconductor region provided directly on the semiconductor substrate.
    Type: Application
    Filed: August 4, 2015
    Publication date: November 26, 2015
    Inventors: Stefan Flachowsky, Matthias Kessler, Jan Hoentschel
  • Publication number: 20150340362
    Abstract: An integrated circuit product includes first and second transistors positioned in and above first and second active regions. The first transistor has a first gate length and a first gate material stack that includes a first gate dielectric layer having a first thickness and at least one layer of metal positioned above the first gate dielectric layer, the first gate dielectric layer including a layer of a first high-k insulating material and a layer of a second high-k insulating material positioned on the layer of the first high-k insulating material. The second transistor has a second gate length and a second gate material stack that includes a second gate dielectric layer having a second thickness positioned above the second active region and at least one layer of metal positioned above the second gate dielectric layer, the second gate dielectric layer including a layer of the second high-k insulating material.
    Type: Application
    Filed: August 6, 2015
    Publication date: November 26, 2015
    Inventors: Martin Gerhardt, Stefan Flachowsky, Matthias Kessler
  • Publication number: 20150333057
    Abstract: The present disclosure relates to a semiconductor structure comprising a resistor, at least part of the resistor forming a meandering shape in a vertical direction with respect to a substrate of the semiconductor structure. The disclosure further relates to a semiconductor manufacturing process comprising a step for realizing at least one first fin, and a step for realizing a resistor comprising a meandering shape in a vertical direction based on the at least one first fin.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 19, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Jan Hoentschel, Stefan Flachowsky, Andreas Kurz, Sven Beyer, Wolfgang Buchholtz
  • Publication number: 20150333080
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an exemplary embodiment, an integrated circuit includes a semiconductor substrate doped with a first conductivity-determining impurity. The semiconductor substrate has formed therein a first well doped with a second conductivity-determining impurity that is different from the first conductivity-determining impurity, a second well, formed within the first well, and doped with the first conductivity-determining impurity, and a third well spaced apart from the first and second wells and doped with the first conductivity-determining impurity. The integrated circuit further includes a floating gate structure formed over the semiconductor substrate.
    Type: Application
    Filed: June 17, 2015
    Publication date: November 19, 2015
    Inventors: Ricardo Pablo Mikalo, Stefan Flachowsky
  • Patent number: 9190516
    Abstract: A methodology for forming a compressive strain layer with increased thickness that exhibits improved device performance and the resulting device are disclosed. Embodiments may include forming a recess in a source or drain region of a substrate, implanting a high-dose impurity in a surface of the recess, and depositing a silicon-germanium (SiGe) layer in the recess.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: November 17, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ran Yan, Stefan Flachowsky, Alban Zaka, Jan Hoentschel
  • Patent number: 9165840
    Abstract: A structure comprises a semiconductor substrate, a semiconductor-on-insulator region and a bulk region. The semiconductor-on-insulator region comprises a first semiconductor region, a dielectric layer provided between the semiconductor substrate and the first semiconductor region, and a first transistor comprising an active region provided in the first semiconductor region. The dielectric layer provides electrical isolation between the first semiconductor region and the semiconductor substrate. The bulk region comprises a second semiconductor region provided directly on the semiconductor substrate.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: October 20, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Matthias Kessler, Jan Hoentschel
  • Patent number: 9136177
    Abstract: Method of forming transistor devices is disclosed that includes forming a first layer of high-k insulating material and a sacrificial protection layer above first and second active regions, removing the first layer of insulating material and the protection layer from above the second active region, removing the protection layer from above the first layer of insulating material positioned above the first active region, forming a second layer of high-k insulating material above the first layer of insulating material and the second active region, forming a layer of metal above the second layer of insulating material, and removing portions of the first and second layers of insulating material and the metal layer to form a first gate stack (comprised of the first and second layers of high-k material and the layer of metal) and a second gate stack (comprised of the second layer of high-k material and the layer of metal).
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: September 15, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Martin Gerhardt, Stefan Flachowsky, Matthias Kessler
  • Patent number: 9129843
    Abstract: A method of forming an inductor in a crystal semiconductor layer is provided, including generating an ion beam, directing the ion beam to a surface of the crystal semiconductor layer, applying a magnetic field to the ion beam to generate a helical motion of the ions and forming a three-dimensional helical structure in the crystal semiconductor layer by means of the ions of the ion beam.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: September 8, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Ralf Richter, Peter Javorka, Jan Hoentschel
  • Publication number: 20150243787
    Abstract: A methodology for forming a compressive strain layer with increased thickness that exhibits improved device performance and the resulting device are disclosed. Embodiments may include forming a recess in a source or drain region of a substrate, implanting a high-dose impurity in a surface of the recess, and depositing a silicon-germanium (SiGe) layer in the recess.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 27, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Ran YAN, Stefan FLACHOWSKY, Alban ZAKA, Jan HOENTSCHEL
  • Publication number: 20150214116
    Abstract: A method of forming a semiconductor device is provided including the steps of forming first and second PMOS transistor devices, wherein the first PMOS transistor devices are low, standard or high voltage threshold transistor devices and the second PMOS transistor devices are super high voltage threshold transistor devices, and wherein forming the first PMOS transistor devices includes implanting dopants to form source and drain junctions of the first PMOS transistor devices and performing a thermal anneal of the first PMOS transistor devices after implanting the dopants, and forming the second PMOS transistor devices includes implanting dopants to form source and drain junctions of the second PMOS transistor devices after performing the thermal anneal of the first PMOS transistor devices.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 30, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Peter Javorka, Juergen Faul, Jan Hoentschel, Stefan Flachowsky, Ralf Richter
  • Publication number: 20150214121
    Abstract: Methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes providing an ultrathin body fully depleted silicon-on-insulator substrate. The method forms a temporary gate structure over the substrate and forms lightly doped source/drain extension areas around the gate structure. Further, the method includes performing an annealing process on the lightly doped source/drain extension areas. Outdiffusion from the lightly doped source/drain extensions is less than 5 nm during the annealing process. The method includes forming a strain region around the gate structure.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 30, 2015
    Inventors: Ralf Illgen, Stefan Flachowsky