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).

  • Publication number: 20160315162
    Abstract: A semiconductor device structure includes an active region positioned in a semiconductor substrate and a gate structure of a transistor positioned above the active region. The gate structure includes a gate insulating layer, a gate metal layer positioned above the gate insulating layer and a trimmed gate electrode material layer positioned above the gate metal layer. A length of at least a portion of the trimmed gate electrode material layer in a gate length direction of the transistor is less than a length of at least the gate metal layer in the gate length direction.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Inventors: Ralf Richter, Peter Javorka, Jan Hoentschel, Stefan Flachowsky
  • Patent number: 9472642
    Abstract: The present disclosure provides in one aspect for a semiconductor device structure which may be formed by providing source/drain regions within a semiconductor substrate in alignment with a gate structure formed over the semiconductor substrate, wherein the gate structure has a gate electrode structure, a first sidewall spacer and a second sidewall spacer, the first sidewall spacer covering sidewall surfaces of the gate electrode structure and the sidewall spacer being formed on the first sidewall spacer. Furthermore, forming the semiconductor device structure may include removing the second sidewall spacer so as to expose the first sidewall spacer, forming a third sidewall spacer on a portion of the first sidewall spacer such that the first sidewall spacer is partially exposed, and forming silicide regions in alignment with the third sidewall spacer in the source/drain regions.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: October 18, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Jan Hoentschel, Stefan Flachowsky, Ralf Richter, Peter Javorka
  • Publication number: 20160300928
    Abstract: A method of manufacturing a semiconductor device is provided including forming replacement gates over a semiconductor layer, forming sidewall spacers at sidewalls of the replacement gates, forming a dielectric layer in interspaces between the sidewall spacers of neighboring replacement gates, removing the replacement gates and sidewall spacers to form openings in the dielectric layer, and forming gate electrodes in the openings.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 13, 2016
    Inventors: Jan Hoentschel, Stefan Flachowsky, Peter Javorka, Ralf Richter
  • Patent number: 9449972
    Abstract: The present disclosure provides, in a first aspect, a semiconductor device, including a semiconductor substrate and a gate structure formed over the semiconductor substrate, wherein the gate structure comprises a fin and a ferroelectric high-k material formed at least over sidewall surfaces of the fin. Herein, a first thickness defined by a thickness of the ferroelectric high-k material formed over sidewalls of the fin is substantially greater than a second thickness defined by a thickness of the ferroelectric high-k material formed over an upper surface of the fin.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: September 20, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
  • Publication number: 20160268271
    Abstract: A method disclosed herein includes providing a semiconductor structure, the semiconductor structure comprising a semiconductor substrate and a gate stack, the gate stack comprising a gate insulation material over the substrate, a floating gate electrode material over the gate insulation material, a ferroelectric transistor dielectric over the floating gate electrode material and a top electrode material over the ferroelectric transistor dielectric, performing a first patterning process to remove portions of the top electrode material and the ferroelectric transistor dielectric and performing a second patterning process after the first patterning process to remove portions of the floating gate electrode material and the gate insulation material, wherein a projected area of an upper portion of the gate structure onto a plane that is perpendicular to a thickness direction of the substrate is smaller than a projected area of the lower portion of the gate structure onto the plane.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Inventors: Johannes Mueller, Stefan Mueller, Stefan Flachowsky
  • Publication number: 20160268426
    Abstract: A semiconductor device includes a plurality of spaced apart fins, a dielectric material layer positioned between each of the plurality of spaced apart fins, and a common gate structure positioned above the dielectric material layer and extending across the fins. A continuous merged semiconductor material region is positioned on each of the fins and above the dielectric material layer, is laterally spaced apart from the common gate structure, extends between and physically contacts the fins, has a first sidewall surface that faces toward the common gate structure, and has a second sidewall surface that is opposite of the first sidewall surface and faces away from the common gate structure. A stress-inducing material is positioned in a space defined by at least the first sidewall surface, opposing sidewall surfaces of an adjacent pair of fins, and an upper surface of the dielectric material layer.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Inventors: Stefan Flachowsky, Jan Hoentschel, Ralf Richter, Peter Javorka
  • Patent number: 9443945
    Abstract: A semiconductor structure comprises a substrate and a transistor. The transistor comprises a raised source region and a raised drain region provided above the substrate, one or more elongated semiconductor lines, a gate electrode and a gate insulation layer. The one or more elongated semiconductor lines are connected between the raised source region and the raised drain region, wherein a longitudinal direction of each of the one or more elongated semiconductor lines extends substantially along a horizontal direction that is perpendicular to a thickness direction of the substrate. Each of the elongated semiconductor lines comprises a channel region. The gate electrode extends all around each of the channel regions of the one or more elongated semiconductor lines. The gate insulation layer is provided between each of the one or more elongated semiconductor lines and the gate electrode.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: September 13, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel
  • Publication number: 20160260714
    Abstract: The present disclosure provides, in a first aspect, a semiconductor device, including a semiconductor substrate and a gate structure formed over the semiconductor substrate, wherein the gate structure comprises a fin and a ferroelectric high-k material formed at least over sidewall surfaces of the fin. Herein, a first thickness defined by a thickness of the ferroelectric high-k material formed over sidewalls of the fin is substantially greater than a second thickness defined by a thickness of the ferroelectric high-k material formed over an upper surface of the fin.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 8, 2016
    Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
  • Publication number: 20160254382
    Abstract: Integrated circuits and methods for producing the same are provided. A method for producing an integrated circuit includes forming a stack overlying a substrate. The stack includes a silicon germanium layer and a silicon layer, where the silicon germanium layer has a first germanium concentration. The stack is condensed to produce a second germanium concentration in the germanium layer, where the second germanium concentration is greater than the first germanium concentration. A fin is formed that includes the stack, and a gate is formed overlying the fin.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 1, 2016
    Inventors: Jan Hoentschel, Stefan Flachowsky, Gerd Zschaetzsch
  • Patent number: 9431508
    Abstract: When forming field effect transistors according to the gate-first HKMG approach, the cap layer formed on top of the gate electrode had to be removed before the silicidation step, resulting in formation of a metal silicide layer on the surface of the gate electrode and of the source and drain regions of the transistor. The present disclosure improves the manufacturing flow by skipping the gate cap removal process. Metal silicide is only formed on the source and drain regions. The gate electrode is then contacted by forming an aperture through the gate material, leaving the surface of the gate metal layer exposed.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: August 30, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel, Roman Boschke
  • Patent number: 9425318
    Abstract: Integrated circuits and methods for producing the same are provided. A method for producing an integrated circuit includes forming a stack overlying a substrate. The stack includes a silicon germanium layer and a silicon layer, where the silicon germanium layer has a first germanium concentration. The stack is condensed to produce a second germanium concentration in the germanium layer, where the second germanium concentration is greater than the first germanium concentration. A fin is formed that includes the stack, and a gate is formed overlying the fin.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 23, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Jan Hoentschel, Stefan Flachowsky, Gerd Zschaetzsch
  • Patent number: 9425194
    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: Grant
    Filed: August 6, 2015
    Date of Patent: August 23, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Martin Gerhardt, Stefan Flachowsky, Matthias Kessler
  • Publication number: 20160233318
    Abstract: The present disclosure provides a method of forming a semiconductor device and a semiconductor device. An SOI substrate portion having a semiconductor layer, a buried insulating material layer and a bulk substrate is provided, wherein the buried insulating material layer is interposed between the semiconductor layer and the bulk substrate. The SOI substrate portion is subsequently patterned so as to form a patterned bi-layer stack on the bulk substrate, which bi-layer stack comprises a patterned semiconductor layer and a patterned buried insulating material layer. The bi-layer stack is further enclosed with a further insulating material layer and an electrode material is formed on and around the further insulating material layer. Herein a gate electrode is formed by the bulk substrate and the electrode material such that the gate electrode substantially surrounds a channel portion formed by a portion of the patterned buried insulating material layer.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 11, 2016
    Inventors: Ralf Richter, Peter Javorka, Jan Hoentschel, Stefan Flachowsky
  • Patent number: 9412859
    Abstract: Methods for forming a semiconductor device are provided. In one embodiment, a gate structure having a gate insulating layer and a gate electrode structure formed on the gate insulating layer is provided. The methods provide reducing a dimension of the gate electrode structure relative to the gate insulating layer along a direction extending in parallel to a direction connecting the source and drain. A semiconductor device structure having a gate structure including a gate insulating layer and a gate electrode structure formed above the gate insulating layer is provided, wherein a dimension of the gate electrode structure extending along a direction which is substantially parallel to a direction being oriented from source to drain is reduced relative to a dimension of the gate insulating layer. According to some examples, gate structures are provided having a gate silicon length which is decoupled from the channel width induced by the gate structure.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: August 9, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ralf Richter, Peter Javorka, Jan Hoentschel, Stefan Flachowsky
  • Patent number: 9412848
    Abstract: The present disclosure provides a method of forming a semiconductor device and a semiconductor device. An SOI substrate portion having a semiconductor layer, a buried insulating material layer and a bulk substrate is provided, wherein the buried insulating material layer is interposed between the semiconductor layer and the bulk substrate. The SOI substrate portion is subsequently patterned so as to form a patterned bi-layer stack on the bulk substrate, which bi-layer stack comprises a patterned semiconductor layer and a patterned buried insulating material layer. The bi-layer stack is further enclosed with a further insulating material layer and an electrode material is formed on and around the further insulating material layer. Herein a gate electrode is formed by the bulk substrate and the electrode material such that the gate electrode substantially surrounds a channel portion formed by a portion of the patterned buried insulating material layer.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: August 9, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ralf Richter, Peter Javorka, Jan Hoentschel, Stefan Flachowsky
  • Patent number: 9401423
    Abstract: When forming transistors with deuterium enhanced gate dielectrics and strained channel regions, the manufacturing processes of strain-inducing dielectric material layers formed above the transistors may be employed to efficiently introduce and diffuse the deuterium to the gate dielectrics. The incorporation of deuterium into the strain-inducing dielectric material layers may be accomplished on the basis of a deposition process in which deuterium is present in the process environment during deposition. The process temperature of the deposition process may be chosen to perform—potentially in combination with further subsequently performed process steps—a sufficient diffusion of deuterium to the gate dielectrics.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: July 26, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Peter Javorka, Stefan Flachowsky
  • Publication number: 20160204217
    Abstract: A semiconductor product with certain devices having a first device with a fully silicided (FuSi) gate and a second device with a partially silicided gate is disclosed. In one example, the first semiconductor device is recessed, resulting in a recessed first gate electrode material which is fully silicided during a subsequent silicidation process. On the gate electrode material of the second semiconductor device, a silicide portion is formed above a layer of polysilicon or amorphous silicon during the silicidation process.
    Type: Application
    Filed: March 22, 2016
    Publication date: July 14, 2016
    Inventors: Peter Javorka, Stefan Flachowsky, Gerd Zschätzsch
  • Patent number: 9391176
    Abstract: The present disclosure provides, in various aspects of the present disclosure, a semiconductor device which includes a semiconductor stack disposed over a surface of a substrate and a gate structure partially formed over an upper surface and two opposing sidewall surfaces of the semiconductor stack, wherein the semiconductor stack includes an alternating arrangement of at least two layers formed by a first semiconductor material and a second semiconductor material which is different from the first semiconductor material.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 12, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel, Ralf Richter, Peter Javorka
  • Patent number: 9373720
    Abstract: The present invention relates to a semiconductor structure comprising at least a first and a second three-dimensional transistor, wherein the first transistor and the second transistor are electrically connected in parallel to each other, and wherein each transistor comprises a source and a drain, wherein the source and/or drain of the first transistor is at least partially separated from, respectively, the source and/or drain of the second transistor. The invention further relates to a process for realizing such a semiconductor structure.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: June 21, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Jan Hoentschel, Ralf Richter, Peter Javorka
  • Patent number: 9373509
    Abstract: A method to implant dopants onto fin-type field-effect-transistor (FINFET) fin surfaces with uniform concentration and depth levels of the dopants and the resulting device are disclosed. Embodiments include a method for pulsing a dopant perpendicular to an upper surface of a substrate, forming an implantation beam pulse; applying an electric or a magnetic field to the implantation beam pulse to effectuate a curvilinear trajectory path of the implantation beam pulse; and implanting the dopant onto a sidewall surface of a target FINFET fin on the upper surface of the substrate via the curvilinear trajectory path of the implantation beam pulse.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: June 21, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ralf Richter, Stefan Flachowsky, Peter Javorka, Jan Hoentschel