Patents by Inventor James S. Nakos

James S. Nakos 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: 9646125
    Abstract: A method is provided to convert commercial microprocessors to radiation-hardened processors and, more particularly, a method is provided to modify a commercial microprocessor for radiation hardened applications with minimal changes to the technology, design, device, and process base so as to facilitate a rapid transition for such radiation hardened applications. The method is implemented in a computing infrastructure and includes evaluating a probability that one or more components of an existing commercial design will be affected by a single event upset (SEU). The method further includes replacing the one or more components with a component immune to the SEU to create a final device.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 9, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: John A. Fifield, Mark C. Hakey, Jason D. Hibbeler, James S. Nakos, Tak H. Ning, Kenneth P. Rodbell, Ronald D. Rose, Henry H. K. Tang, Larry Wissel
  • Patent number: 9385179
    Abstract: Solutions for forming a silicided deep trench decoupling capacitor are disclosed. In one aspect, a method of forming a semiconductor device includes: forming an outer trench in a silicon substrate, the forming exposing portions of the silicon substrate below an upper surface of the silicon substrate; depositing a dielectric liner layer inside the trench; depositing a doped polysilicon layer over the dielectric liner layer, the doped polysilicon layer forming an inner trench in the silicon substrate; forming a silicide layer over a portion of the doped polysilicon layer; forming an intermediate contact layer within the inner trench; and forming a contact over a portion of the intermediate contact layer and a portion of the silicide layer.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: July 5, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: James S. Nakos, Edmund J. Sprogis, Anthony K. Stamper
  • Patent number: 9269787
    Abstract: According to a bipolar transistor structure having a transistor top and a transistor bottom herein, a silicon substrate located at the transistor bottom has a collector region of a first conductivity type. An epitaxial base layer of a second conductivity type overlies, relative to the transistor top and bottom, a portion of the collector region. The epitaxial base layer has a bottom surface on the silicon substrate and a top surface opposite the bottom surface. A top region, relative to the transistor top and bottom, of the epitaxial base layer comprises a concentration of germanium having atomic compositions sufficient to avoid impacting transistor parameters, and sufficient to be resistant to selective chemical etching. A silicon emitter layer of the first conductivity type overlies, relative to the transistor top and bottom, a portion of the epitaxial base layer adjacent to the top surface of the epitaxial base layer.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 23, 2016
    Assignee: GLOBALFOUNDRIES U.S. 2 LLC
    Inventors: James S. Dunn, Qizhi Liu, James S. Nakos
  • Publication number: 20150303275
    Abstract: According to a bipolar transistor structure having a transistor top and a transistor bottom herein, a silicon substrate located at the transistor bottom has a collector region of a first conductivity type. An epitaxial base layer of a second conductivity type overlies, relative to the transistor top and bottom, a portion of the collector region. The epitaxial base layer has a bottom surface on the silicon substrate and a top surface opposite the bottom surface. A top region, relative to the transistor top and bottom, of the epitaxial base layer comprises a concentration of germanium having atomic compositions sufficient to avoid impacting transistor parameters, and sufficient to be resistant to selective chemical etching. A silicon emitter layer of the first conductivity type overlies, relative to the transistor top and bottom, a portion of the epitaxial base layer adjacent to the top surface of the epitaxial base layer.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Inventors: James S. Dunn, Qizhi Liu, James S. Nakos
  • Patent number: 9105677
    Abstract: According to a bipolar transistor structure having a transistor top and a transistor bottom herein, a silicon substrate located at the transistor bottom has a collector region of a first conductivity type. An epitaxial base layer of a second conductivity type overlies, relative to the transistor top and bottom, a portion of the collector region. The epitaxial base layer has a bottom surface on the silicon substrate and a top surface opposite the bottom surface. A top region, relative to the transistor top and bottom, of the epitaxial base layer comprises a concentration of germanium having atomic compositions sufficient to avoid impacting transistor parameters, and sufficient to be resistant to selective chemical etching. A silicon emitter layer of the first conductivity type overlies, relative to the transistor top and bottom, a portion of the epitaxial base layer adjacent to the top surface of the epitaxial base layer.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: August 11, 2015
    Assignee: International Business Machines Corporation
    Inventors: James S. Dunn, Qizhi Liu, James S. Nakos
  • Publication number: 20150108548
    Abstract: According to a bipolar transistor structure having a transistor top and a transistor bottom herein, a silicon substrate located at the transistor bottom has a collector region of a first conductivity type. An epitaxial base layer of a second conductivity type overlies, relative to the transistor top and bottom, a portion of the collector region. The epitaxial base layer has a bottom surface on the silicon substrate and a top surface opposite the bottom surface. A top region, relative to the transistor top and bottom, of the epitaxial base layer comprises a concentration of germanium having atomic compositions sufficient to avoid impacting transistor parameters, and sufficient to be resistant to selective chemical etching. A silicon emitter layer of the first conductivity type overlies, relative to the transistor top and bottom, a portion of the epitaxial base layer adjacent to the top surface of the epitaxial base layer.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: International Business Machines Corporation
    Inventors: James S. Dunn, Qizhi Liu, James S. Nakos
  • Patent number: 8872281
    Abstract: A trench contact silicide is formed on an inner wall of a contact trench that reaches to a buried conductive layer in a semiconductor substrate to reduce parasitic resistance of a reachthrough structure. The trench contact silicide is formed at the bottom, on the sidewalls of the trench, and on a portion of the top surface of the semiconductor substrate. The trench is subsequently filled with a middle-of-line (MOL) dielectric. A contact via may be formed on the trench contact silicide. The trench contact silicide may be formed through a single silicidation reaction with a metal layer or through multiple silicidation reactions with multiple metal layers.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Douglas D. Coolbaugh, Jeffrey B. Johnson, Peter J. Lindgren, Xuefeng Lie, James S. Nakos, Bradley A. Omer, Robert M. Rassel, David C. Sheridan
  • Publication number: 20140258958
    Abstract: A method is provided to convert commercial microprocessors to radiation-hardened processors and, more particularly, a method is provided to modify a commercial microprocessor for radiation hardened applications with minimal changes to the technology, design, device, and process base so as to facilitate a rapid transition for such radiation hardened applications. The method is implemented in a computing infrastructure and includes evaluating a probability that one or more components of an existing commercial design will be affected by a single event upset (SEU). The method further includes replacing the one or more components with a component immune to the SEU to create a final device.
    Type: Application
    Filed: January 10, 2014
    Publication date: September 11, 2014
    Applicant: International Business Machines Corporation
    Inventors: John A. FIFIELD, Mark C. HAKEY, Jason D. HIBBELER, James S. NAKOS, Tak H. NING, Kenneth P. RODBELL, Ronald D. ROSE, Henry H.K. TANG, Larry WISSEL
  • Publication number: 20140239498
    Abstract: A trench contact silicide is formed on an inner wall of a contact trench that reaches to a buried conductive layer in a semiconductor substrate to reduce parasitic resistance of a reachthrough structure. The trench contact silicide is formed at the bottom, on the sidewalls of the trench, and on a portion of the top surface of the semiconductor substrate. The trench is subsequently filled with a middle-of-line (MOL) dielectric. A contact via may be formed on the trench contact silicide. The trench contact silicide may be formed through a single silicidation reaction with a metal layer or through multiple silicidation reactions with multiple metal layers.
    Type: Application
    Filed: August 9, 2012
    Publication date: August 28, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Douglas D. Coolbaugh, Jeffrey B. Johnson, Peter J. Lindgren, Xuefeng Liu, James S. Nakos, Bradley A. Orner, Robert M. Rassel, David C. Sheridan
  • Patent number: 8796044
    Abstract: Device structures, fabrication methods, and design structures for a capacitor of a memory cell of ferroelectric random access memory device. The capacitor may include a first electrode comprised of a first conductor, a ferroelectric layer on the first electrode, a second electrode on the ferroelectric layer, and a cap layer on an upper surface of the second electrode. The second electrode may be comprised of a second conductor, and the cap layer may have a composition that is free of titanium. The second electrode may be formed by etching a layer of a material formed on a layer of the second conductor to define a hardmask and then modifying the remaining portion of that material in the hardmask to have a comparatively less etch rate, when exposed to a chlorine-based reactive ion etch chemistry, than when initially formed.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: August 5, 2014
    Assignee: International Business Machines Corporation
    Inventors: James E. Beecher, William J. Murphy, James S. Nakos, Bruce W. Porth
  • Publication number: 20140203342
    Abstract: Device structures, fabrication methods, and design structures for a capacitor of a memory cell of ferroelectric random access memory device. The capacitor may include a first electrode comprised of a first conductor, a ferroelectric layer on the first electrode, a second electrode on the ferroelectric layer, and a cap layer on an upper surface of the second electrode. The second electrode may be comprised of a second conductor, and the cap layer may have a composition that is free of titanium. The second electrode may be formed by etching a layer of a material formed on a layer of the second conductor to define a hardmask and then modifying the remaining portion of that material in the hardmask to have a comparatively less etch rate, when exposed to a chlorine-based reactive ion etch chemistry, than when initially formed.
    Type: Application
    Filed: March 26, 2014
    Publication date: July 24, 2014
    Applicant: International Business Machines Corporation
    Inventors: James E. Beecher, William J. Murphy, James S. Nakos, Bruce W. Porth
  • Patent number: 8741729
    Abstract: A resistor and capacitor are provided in respective shallow trench isolation structures. The method includes forming a first and second trench in a substrate and forming a first insulator layer within the first and second trench. The method includes forming a first electrode material within the first and second trench, on the first insulator layer, and forming a second insulator layer within the first and second trench and on the first electrode material. The method includes forming a second electrode material within the first and second trench, on the second insulator layer. The second electrode material pinches off the second trench. The method includes removing a portion of the second electrode material and the second insulator layer at a bottom portion of the first trench, and filling in the first trench with additional second electrode material. The additional second electrode material is in electrical contact with the first electrode material.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 3, 2014
    Assignee: International Business Machines Corporation
    Inventors: Timothy W. Kemerer, James S. Nakos, Steven M. Shank
  • Patent number: 8709887
    Abstract: A method of fabricating a gate dielectric layer. The method includes: providing a substrate; forming a silicon dioxide layer on a top surface of the substrate; performing a plasma nitridation in a reducing atmosphere to convert the silicon dioxide layer into a silicon oxynitride layer. The dielectric layer so formed may be used in the fabrication of MOSFETs.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: April 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Jay S. Burnham, James S. Nakos, James J. Quinlivan, Bernie Roque, Jr., Steven M. Shank, Beth A. Ward
  • Publication number: 20140084352
    Abstract: Device structures, fabrication methods, and design structures for a capacitor of a memory cell of ferroelectric random access memory device. The capacitor may include a first electrode comprised of a first conductor, a ferroelectric layer on the first electrode, a second electrode on the ferroelectric layer, and a cap layer on an upper surface of the second electrode. The second electrode may be comprised of a second conductor, and the cap layer may have a composition that is free of titanium. The second electrode may be formed by etching a layer of a material formed on a layer of the second conductor to define a hardmask and then modifying the remaining portion of that material in the hardmask to have a comparatively less etch rate, when exposed to a chlorine-based reactive ion etch chemistry, than when initially formed.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 27, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: James E. Beecher, William J. Murphy, James S. Nakos, Bruce W. Porth
  • Patent number: 8658435
    Abstract: A method for forming a hydrogen barrier liner for a ferro-electric random access memory chip including forming a first dielectric layer over a substrate; forming a gate over the first dielectric layer; forming a first aluminum oxide layer over the gate and the first dielectric layer; forming a second dielectric layer over the first aluminum oxide layer; etching a trench through the second dielectric layer and the first aluminum oxide layer to the gate; forming a hydrogen barrier liner over the second dielectric layer, the hydrogen barrier liner lining the trench and contacting the gate; forming a silicon dioxide layer over the first aluminum dioxide layer, the silicon dioxide layer substantially filling the trench; and substantially removing the silicon dioxide layer leaving a silicon dioxide plug in the trench.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: February 25, 2014
    Assignee: International Business Machines Corporation
    Inventors: Brian M. Czabaj, James V. Hart, III, William J. Murphy, James S. Nakos
  • Patent number: 8614137
    Abstract: The invention relates to a semiconductor structures and methods of manufacture and, more particularly, to a dual contact trench resistor in shallow trench isolation (STI) and methods of manufacture. In a first aspect of the invention, a method comprises forming a trench in a substrate; forming a first insulator layer within the trench; forming a first electrode within the trench, on the first insulator layer, and isolated from the substrate by the first insulator layer; forming a second insulator layer within the trench and on the first electrode; and forming a second electrode within the trench, on the second insulator layer, and isolated from the substrate by the first insulator layer and the second insulator layer.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: December 24, 2013
    Assignee: International Business Machines Corporation
    Inventors: Timothy W. Kemerer, James S. Nakos, Steven M. Shank
  • Publication number: 20130292798
    Abstract: A resistor and capacitor are provided in respective shallow trench isolation structures. The method includes forming a first and second trench in a substrate and forming a first insulator layer within the first and second trench. The method includes forming a first electrode material within the first and second trench, on the first insulator layer, and forming a second insulator layer within the first and second trench and on the first electrode material. The method includes forming a second electrode material within the first and second trench, on the second insulator layer. The second electrode material pinches off the second trench. The method includes removing a portion of the second electrode material and the second insulator layer at a bottom portion of the first trench, and filling in the first trench with additional second electrode material. The additional second electrode material is in electrical contact with the first electrode material.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Inventors: Timothy W. KEMERER, James S. NAKOS, Steven M. SHANK
  • Patent number: 8546243
    Abstract: A resistor and capacitor are provided in respective shallow trench isolation structures. The method includes forming a first and second trench in a substrate and forming a first insulator layer within the first and second trench. The method includes forming a first electrode material within the first and second trench, on the first insulator layer, and forming a second insulator layer within the first and second trench and on the first electrode material. The method includes forming a second electrode material within the first and second trench, on the second insulator layer. The second electrode material pinches off the second trench. The method includes removing a portion of the second electrode material and the second insulator layer at a bottom portion of the first trench, and filling in the first trench with additional second electrode material. The additional second electrode material is in electrical contact with the first electrode material.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: October 1, 2013
    Assignee: International Business Machines Corporation
    Inventors: Timothy W. Kemerer, James S. Nakos, Steven M. Shank
  • Patent number: 8492816
    Abstract: Solutions for forming a silicided deep trench decoupling capacitor are disclosed. In one aspect, a semiconductor structure includes a trench capacitor within a silicon substrate, the trench capacitor including: an outer trench extending into the silicon substrate; a dielectric liner layer in contact with the outer trench; a doped polysilicon layer over the dielectric liner layer, the doped polysilicon layer forming an inner trench within the outer trench; and a silicide layer over a portion of the doped polysilicon layer, the silicide layer separating at least a portion of the contact from at least a portion of the doped polysilicon layer; and a contact having a lower surface abutting the trench capacitor, a portion of the lower surface not abutting the silicide layer.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: July 23, 2013
    Assignee: International Business Machines Corporation
    Inventors: James S. Nakos, Edmund J. Sprogis, Anthony K. Stamper
  • Patent number: 8450168
    Abstract: Ferro-electric capacitor modules, methods of manufacture and design structures. The method of manufacturing the ferro-electric capacitor includes forming a barrier layer on an insulator layer of a CMOS structure. The method further includes forming a top plate and a bottom plate over the barrier layer. The method further includes forming a ferro-electric material between the top plate and the bottom plate. The method further includes encapsulating the barrier layer, top plate, bottom plate and ferro-electric material with an encapsulating material. The method further includes forming contacts to the top plate and bottom plate, through the encapsulating material. At least the contact to the top plate and a contact to a diffusion of the CMOS structure are in electrical connection through a common wire.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: May 28, 2013
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey P. Gambino, Matthew D. Moon, William J. Murphy, James S. Nakos, Paul W. Pastel, Brett A. Philips