Patents by Inventor Robert Mark Rassel

Robert Mark Rassel 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: 20130277753
    Abstract: A BiCMOS device structure, method of manufacturing the same and design structure thereof are provided. The BiCMOS device structure includes a substrate having a layer of semiconductor material upon an insulating layer. The BiCMOS device structure further includes a bipolar junction transistor structure formed in a first region of the substrate having an extrinsic base layer formed at least partially from a portion of the layer of semiconductor material.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 24, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: William F. Clark, JR., Qizhi Liu, Robert Mark Rassel, Yun Shi
  • Patent number: 8390038
    Abstract: A MIM capacitor device and method of making the device. The device includes an upper plate comprising one or more electrically conductive layers, a dielectric block comprising one or more dielectric layers, a lower plate comprising one or more electrically conductive layer; and a spreader plate comprising one or more electrically conductive layers.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Douglas Duane Coolbaugh, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel
  • Patent number: 8159040
    Abstract: A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Douglas D. Coolbaugh, Ebenezer E. Eshun, Ephrem G. Gebreselasie, Zhong-Xiang He, Herbert Lei Ho, Deok-kee Kim, Chandrasekharan Kothandaraman, Dan Moy, Robert Mark Rassel, John Matthew Safran, Kenneth Jay Stein, Norman Whitelaw Robson, Ping-Chuan Wang, Hongwen Yan
  • Patent number: 7915134
    Abstract: A MIM capacitor is formed on a semiconductor substrate having a top surface and including regions formed in the surface selected from a Shallow Trench Isolation (STI) region and a doped well having exterior surfaces coplanar with the semiconductor substrate. A capacitor lower plate is either a lower electrode formed on the STI region in the semiconductor substrate or a lower electrode formed by a doped well formed in the top surface of the semiconductor substrate that may have a silicide surface. A capacitor HiK dielectric layer is formed on or above the lower plate. A capacitor second plate is formed on the HiK dielectric layer above the capacitor lower plate. A dual capacitor structure with a top plate may be formed above the second plate with vias connected to the lower plate protected from the second plate by side wall spacers.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: March 29, 2011
    Assignee: International Business Machines Corporation
    Inventors: Anil Kumar Chinthakindi, Douglas Duane Coolbaugh, Keith Edward Downes, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel, Anthony Kendall Stamper, Kunal Vaed
  • Patent number: 7812388
    Abstract: A trench capacitor and method of forming a trench capacitor. The trench capacitor including: a trench in a single-crystal silicon substrate, a conformal dielectric liner on the sidewalls and the bottom of the trench; an electrically conductive polysilicon inner plate filling regions of the trench not filled by the liner; an electrically conductive doped outer plate in the substrate surrounding the sidewalls and the bottom of the trench; a doped silicon region in the substrate; a first electrically conductive metal silicide layer on a surface region of the doped silicon region exposed at the top surface of the substrate; a second electrically conductive metal silicide layer on a surface region of the inner plate exposed at the top surface of the substrate; and an insulating ring on the top surface of the substrate between the first and second metal silicide layers.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: October 12, 2010
    Assignee: International Business Machines Corporation
    Inventors: Timothy Wayne Kemerer, Robert Mark Rassel, Steven M Shank, Francis Roger White
  • Patent number: 7694262
    Abstract: A trench capacitor, method of forming a trench capacitor and a design structure for a trench capacitor. The trench capacitor including: a trench in a single-crystal silicon substrate, a conformal dielectric liner on the sidewalls and the bottom of the trench; an electrically conductive polysilicon inner plate filling regions of the trench not filled by the liner; an electrically conductive doped outer plate in the substrate surrounding the sidewalls and the bottom of the trench; a doped silicon region in the substrate; a first electrically conductive metal silicide layer on a surface region of the doped silicon region exposed at the top surface of the substrate; a second electrically conductive metal silicide layer on a surface region of the inner plate exposed at the top surface of the substrate; and an insulating ring on the top surface of the substrate between the first and second metal silicide layers.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: April 6, 2010
    Assignee: International Business Machines Corporation
    Inventors: Timothy Wayne Kemerer, Robert Mark Rassel, Steven M. Shank, Francis Roger White
  • Patent number: 7692271
    Abstract: Structure and methods for a differential junction varactor. The structure includes: a silicon first region formed in a silicon substrate, the first region of a first dopant type; and a plurality of silicon second regions in physical and electrical contact with the first region, the plurality of second regions spaced apart and not in physical contact with each other, the plurality of second regions of a second dopant type, the first dopant type different from the second dopant type; a cathode terminal electrically connected to the first region; a first anode terminal electrically connected to a first set of second regions of the plurality of second regions; and a second anode terminal electrically connected to a second set of second silicon regions of the plurality of second regions, second regions of the first set of second regions alternating with second regions of the second set of second regions.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: April 6, 2010
    Assignee: International Business Machines Corporation
    Inventors: Frederick Gustav Anderson, Robert Mark Rassel, Nicholas Theodore Schmidt, Xudong Wang
  • Publication number: 20090283840
    Abstract: A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 19, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Douglas D. Coolbaugh, Ebenezer E. Eshun, Ephrem G. Gebreselasie, Zhong-Xiang He, Herbert Lei Ho, Deok-kee Kim, Chandrasekharan Kothandaraman, Dan Moy, Robert Mark Rassel, John Matthew Safran, Kenneth Jay Stein, Norman Whitelaw Robson, Ping-Chuan Wang, Hongwen Yan
  • Publication number: 20090100388
    Abstract: A trench capacitor, method of forming a trench capacitor and a design structure for a trench capacitor. The trench capacitor including: a trench in a single-crystal silicon substrate, a conformal dielectric liner on the sidewalls and the bottom of the trench; an electrically conductive polysilicon inner plate filling regions of the trench not filled by the liner; an electrically conductive doped outer plate in the substrate surrounding the sidewalls and the bottom of the trench; a doped silicon region in the substrate; a first electrically conductive metal silicide layer on a surface region of the doped silicon region exposed at the top surface of the substrate; a second electrically conductive metal silicide layer on a surface region of the inner plate exposed at the top surface of the substrate; and an insulating ring on the top surface of the substrate between the first and second metal silicide layers.
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Inventors: Timothy Wayne Kemerer, Robert Mark Rassel, Steven M. Shank, Francis Roger White
  • Patent number: 7488643
    Abstract: A MIM capacitor device and method of making the device. The device includes an upper plate comprising one or more electrically conductive layers, the upper plate having a top surface, a bottom surface and sidewalls; a spreader plate comprising one or more electrically conductive layers, the spreader plate having a top surface, a bottom surface and sidewalls; and a dielectric block comprising one or more dielectric layers the dielectric block having a top surface, a bottom surface and sidewalls, the top surface of the dielectric block in physical contact with the bottom surface of the upper plate, the bottom surface of the dielectric block over the top surface of the spreader plate, the sidewalls of the upper plate and the dielectric block essentially co-planer.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: February 10, 2009
    Assignee: International Business Machines Corporation
    Inventors: Douglas Duane Coolbaugh, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel
  • Publication number: 20090004809
    Abstract: A MIM capacitor is formed on a semiconductor substrate having a top surface and including regions formed in the surface selected from a Shallow Trench Isolation (STI) region and a doped well having exterior surfaces coplanar with the semiconductor substrate. A capacitor lower plate is either a lower electrode formed on the STI region in the semiconductor substrate or a lower electrode formed by a doped well formed in the top surface of the semiconductor substrate that may have a silicide surface. A capacitor HiK dielectric layer is formed on or above the lower plate. A capacitor second plate is formed on the HiK dielectric layer above the capacitor lower plate. A dual capacitor structure with a top plate may be formed above the second plate with vias connected to the lower plate protected from the second plate by side wall spacers.
    Type: Application
    Filed: January 8, 2008
    Publication date: January 1, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anil Kumar Chinthakindi, Douglas Duane Coolbaugh, Keith Edward Downes, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel, Anthony Kendall Stamper, Kunal Vaed
  • Publication number: 20080315274
    Abstract: A trench capacitor and method of forming a trench capacitor. The trench capacitor including: a trench in a single-crystal silicon substrate, a conformal dielectric liner on the sidewalls and the bottom of the trench; an electrically conductive polysilicon inner plate filling regions of the trench not filled by the liner; an electrically conductive doped outer plate in the substrate surrounding the sidewalls and the bottom of the trench; a doped silicon region in the substrate; a first electrically conductive metal silicide layer on a surface region of the doped silicon region exposed at the top surface of the substrate; a second electrically conductive metal silicide layer on a surface region of the inner plate exposed at the top surface of the substrate; and an insulating ring on the top surface of the substrate between the first and second metal silicide layers.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Inventors: Timothy Wayne Kemerer, Robert Mark Rassel, Steven M. Shank, Francis Roger White
  • Publication number: 20080232025
    Abstract: A MIM capacitor device and method of making the device. The device includes an upper plate comprising one or more electrically conductive layers, a dielectric block comprising one or more dielectric layers, a lower plate comprising one or more electrically conductive layer; and a spreader plate comprising one or more electrically conductive layers.
    Type: Application
    Filed: June 5, 2008
    Publication date: September 25, 2008
    Inventors: Douglas Duane Coolbaugh, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel
  • Publication number: 20080203537
    Abstract: Structure and methods for a differential junction varactor. The structure includes: a silicon first region formed in a silicon substrate, the first region of a first dopant type; and a plurality of silicon second regions in physical and electrical contact with the first region, the plurality of second regions spaced apart and not in physical contact with each other, the plurality of second regions of a second dopant type, the first dopant type different from the second dopant type; a cathode terminal electrically connected to the first region; a first anode terminal electrically connected to a first set of second regions of the plurality of second regions; and a second anode terminal electrically connected to a second set of second silicon regions of the plurality of second regions, second regions of the first set of second regions alternating with second regions of the second set of second regions.
    Type: Application
    Filed: February 28, 2007
    Publication date: August 28, 2008
    Inventors: Frederick Gustav Anderson, Robert Mark Rassel, Nicholas Theodore Schmidt, Xudong Wang
  • Publication number: 20080149983
    Abstract: MOS varactor having an entire accumulation and depletion regime of its CV characteristic curve in one bias regime (negative or positive). The MOS varactor may comprise a gate electrode, a well region of semiconductor material having a first conductivity type (e.g., p-type), contact regions to the well region that comprise heavily doped semiconductor material of the first conductivity type (e.g., p+-type), and a Schottky junction formed between the gate and contact regions. The Schottky junction may be formed by spacing the contact regions away from the gate electrode and siliciding the substrate surface. The gate electrode may be formed from semiconductor material of a second conductivity type (e.g., n-type) opposite to the first conductivity type, thus changing the flat band voltage of the MOS varactor and shifting accumulation and depletion regime of the CV characteristic curve in one bias regime, such as the negative bias regime.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 26, 2008
    Applicant: International Business Machines Corporation
    Inventors: Robert Mark Rassel, Douglas Duane Coolbaugh, Zhong-Xiang He, Ebenezer E. Eshun, David S. Collins, Douglas Brian Hershberger
  • Patent number: 7381997
    Abstract: A structure and method of fabricating lateral diodes. The diodes include Schottky diodes and PIN diodes. The method of fabrication includes forming one or more doped regions and more trenches in a silicon substrate and forming metal silicides on the sidewalls of the trenches. The fabrication of lateral diodes may be integrated with the fabrication of field effect, bipolar and SiGe bipolar transistors.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: June 3, 2008
    Assignee: International Business Machines Corporation
    Inventors: Douglas Duane Coolbaugh, Jeffrey Bowman Johnson, Xuefeng Liu, Bradley Alan Orner, Robert Mark Rassel, David Charles Sheridan
  • Patent number: 7361950
    Abstract: A MIM capacitor is formed on a semiconductor substrate having a top surface and including regions formed in the surface selected from a Shallow Trench Isolation (STI) region and a doped well having exterior surfaces coplanar with the semiconductor substrate. A capacitor lower plate is either a lower electrode formed on the STI region in the semiconductor substrate or a lower electrode formed by a doped well formed in the top surface of the semiconductor substrate that may have a silicide surface. A capacitor HiK dielectric layer is formed on or above the lower plate. A capacitor second plate is formed on the HiK dielectric layer above the capacitor lower plate. A dual capacitor structure with a top plate may be formed above the second plate with vias connected to the lower plate protected from the second plate by sidewall spacers.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: April 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Anil Kumar Chinthakindi, Douglas Duane Coolbaugh, Keith Edward Downes, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel, Anthony Kendall Stamper, Kunal Vaed
  • Patent number: 7335927
    Abstract: A structure and method of fabricating lateral diodes. The diodes include Schottky diodes and PIN diodes. The method of fabrication includes forming one or more doped regions and more trenches in a silicon substrate and forming metal silicides on the sidewalls of the trenches. The fabrication of lateral diodes may be integrated with the fabrication of field effect, bipolar and SiGe bipolar transistors.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: February 26, 2008
    Assignee: Internatioanl Business Machines Corporation
    Inventors: Douglas Duane Coolbaugh, Jeffrey Bowman Johnson, Xuefeng Liu, Bradley Alan Orner, Robert Mark Rassel, David Charles Sheridan
  • Publication number: 20070296085
    Abstract: A MIM capacitor device and method of making the device. The device includes an upper plate comprising one or more electrically conductive layers, the upper plate having a top surface, a bottom surface and sidewalls; a spreader plate comprising one or more electrically conductive layers, the spreader plate having a top surface, a bottom surface and sidewalls; and a dielectric block comprising one or more dielectric layers the dielectric block having a top surface, a bottom surface and sidewalls, the top surface of the dielectric block in physical contact with the bottom surface of the upper plate, the bottom surface of the dielectric block over the top surface of the spreader plate, the sidewalls of the upper plate and the dielectric block essentially co-planer.
    Type: Application
    Filed: June 21, 2006
    Publication date: December 27, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Douglas Duane Coolbaugh, Ebenezer E. Eshun, Zhong-Xiang He, Robert Mark Rassel
  • Publication number: 20070176252
    Abstract: A structure and method of fabricating lateral diodes. The diodes include Schottky diodes and PIN diodes. The method of fabrication includes forming one or more doped regions and more trenches in a silicon substrate and forming metal silicides on the sidewalls of the trenches. The fabrication of lateral diodes may be integrated with the fabrication of field effect, bipolar and SiGe bipolar transistors.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 2, 2007
    Inventors: Douglas Duane Coolbaugh, Jeffrey Bowman Johnson, Xuefeng Liu, Bradley Alan Orner, Robert Mark Rassel, David Charles Sheridan