Patents by Inventor Mark Masters

Mark Masters 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: 7503021
    Abstract: The invention provides a method, system, and program product for diagnosing an integrated circuit. In particular, the invention captures one or more images for each relevant circuit layer of the integrated circuit. Based on the image(s), a component netlist is generated. Further, a logic netlist is generated by applying hierarchical composition rules to the component netlist. The component netlist and/or logic netlist can be compared to a reference netlist to diagnose the integrated circuit. The invention can further generate a schematic based on the component netlist or logic netlist in which components are arranged according to port, power, and/or component pin connection information determined from the netlist. Further, the schematic can be displayed in a manner that wiring connections are selectively displayed to assist a user in intelligently arranging the circuit components.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: March 10, 2009
    Assignee: International Business Machines Corporation
    Inventors: Matt Boucher, John M. Cohn, Richard Dauphin, Mark Masters, Judith H. McCullen, Sarah C. Braasch, Michael H. Sitko
  • Publication number: 20070197010
    Abstract: A method and structure for an integrated circuit comprising a first transistor and an embedded carbon nanotube field effect transistor (CNT FET) proximate to the first transistor, wherein the CNT FET is dimensioned smaller than the first transistor. The CNT FET is adapted to sense signals from the first transistor, wherein the signals comprise any of temperature, voltage, current, electric field, and magnetic field signals. Moreover, the CNT FET is adapted to measure stress and strain in the integrated circuit, wherein the stress and strain comprise any of mechanical and thermal stress and strain. Additionally, the CNT FET is adapted to detect defective circuits within the integrated circuit.
    Type: Application
    Filed: April 4, 2007
    Publication date: August 23, 2007
    Inventors: Mark Hakey, Mark Masters, Leah Pastel, David Vallett
  • Publication number: 20070021293
    Abstract: A semiconductor structure in which a planar semiconductor device and a horizontal carbon nanotube transistor have a shared gate and a method of fabricating the same are provided in the present application. The hybrid semiconductor structure includes at least one horizontal carbon nanotube transistor and at least one planar semiconductor device, in which the at least one horizontal carbon nanotube transistor and the at least one planar semiconductor device have a shared gate and the at least one horizontal carbon nanotube transistor is located above a gate of the at least one planar semiconductor device.
    Type: Application
    Filed: July 25, 2005
    Publication date: January 25, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Toshiharu Furukawa, Mark Hakey, Steven Holmes, David Horak, Charles Koburger, Mark Masters
  • Publication number: 20060292861
    Abstract: Conductive paths in an integrated circuit are formed using multiple undifferentiated carbon nanotubes embedded in a conductive metal, which is preferably copper. Preferably, conductive paths include vias running between conductive layers. Preferably, composite vias are formed by forming a metal catalyst pad on a conductor at the via site, depositing and etching a dielectric layer to form a cavity, growing substantially parallel carbon nanotubes on the catalyst in the cavity, and filling the remaining voids in the cavity with copper. The next conductive layer is then formed over the via hole.
    Type: Application
    Filed: July 20, 2006
    Publication date: December 28, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Toshiharu Furukawa, Mark Hakey, David Horak, Charles Koburger, Mark Masters, Peter Mitchell, Stanislav Polonsky
  • Publication number: 20060195285
    Abstract: A diagnostic system and method for testing an integrated circuit (IC) during fabrication thereof, wherein the diagnostic system comprises at least one IC chip comprising an electrical signature; a sacrificial circuit adjacent to the IC chip and comprising a known electrical signature and intentionally mis-designed circuitry; and a comparator adapted to compare the electrical signature of the IC chip with the known electrical signature of the sacrificial circuit, wherein a match in the electrical signature of the IC chip with the known electrical signature of the sacrificial circuit indicates that the IC chip is mis-designed. The diagnostic system further comprises a semiconductor wafer comprising a plurality of IC chips and a kerf area separating one IC chip from another IC chip. The sacrificial circuit is located in the kerf area or alternatively on each of the plurality of IC chips. A mis-designed IC chip comprises abnormally functioning circuitry.
    Type: Application
    Filed: February 25, 2005
    Publication date: August 31, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Pierre Bouchard, Mark Hakey, Mark Masters, Leah Pastel, James Slinkman, David Vallett
  • Publication number: 20060169972
    Abstract: A hybrid semiconductor structure which includes a horizontal semiconductor device and a vertical carbon nanotube transistor, where the vertical carbon nanotube transistor and the horizontal semiconductor device have at least one shared node is provided. The at least one shared node can include, for example, a drain, source or gate electrode of a FET, or an emitter, collector, or base of a bipolar transistor. A method of forming the inventive hybrid semiconductor structure having at least one shared node between the vertical carbon nanotube transistor and the horizontal semiconductor device is also provided.
    Type: Application
    Filed: January 31, 2005
    Publication date: August 3, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Toshiharu Furukawa, Mark Hakey, David Horak, Charles Koburger, Mark Masters, Peter Mitchell
  • Publication number: 20060038167
    Abstract: A method and structure for an integrated circuit comprising a first transistor and an embedded carbon nanotube field effect transistor (CNT FET) proximate to the first transistor, wherein the CNT FET is dimensioned smaller than the first transistor. The CNT FET is adapted to sense signals from the first transistor, wherein the signals comprise any of temperature, voltage, current, electric field, and magnetic field signals. Moreover, the CNT FET is adapted to measure stress and strain in the integrated circuit, wherein the stress and strain comprise any of mechanical and thermal stress and strain. Additionally, the CNT FET is adapted to detect defective circuits within the integrated circuit.
    Type: Application
    Filed: August 20, 2004
    Publication date: February 23, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Mark Hakey, Mark Masters, Leah Pastel, David Vallett
  • Publication number: 20060008927
    Abstract: A memory gain cell for a memory circuit, a memory circuit formed from multiple memory gain cells, and methods of fabricating such memory gain cells and memory circuits. The memory gain cell includes a storage device capable of holding a stored electrical charge, a write device, and a read device. The read device includes a fin of semiconducting material, electrically-isolated first and second gate electrodes flanking the fin, and a source and drain formed in the fin adjacent to the first and the second gate electrodes. The first gate electrode is electrically coupled with the storage device. The first and second gate electrodes are operative for gating a region of the fin defined between the source and the drain to thereby regulate a current flowing from the source to the drain. When gated, the magnitude of the current is dependent upon the electrical charge stored by the storage device.
    Type: Application
    Filed: September 7, 2005
    Publication date: January 12, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Toshiharu Furukawa, Mark Hakey, David Horak, Charles Koburger, Mark Masters, Peter Mitchell
  • Publication number: 20050286293
    Abstract: A gain cell for a memory circuit, a memory circuit formed from multiple gain cells, and methods of fabricating such gain cells and memory circuits. The memory gain cell includes a storage capacitor, a write device electrically coupled with the storage capacitor for charging and discharging the storage capacitor to define a stored electrical charge, and a read device. The read device includes one or more semiconducting carbon nanotubes each electrically coupled between a source and drain. A portion of each semiconducting carbon nanotube is gated by the read gate and the storage capacitor to thereby regulate a current flowing through each semiconducting carbon nanotube from the source to the drain. The current is proportional to the electrical charge stored by the storage capacitor. In certain embodiments, the memory gain cell may include multiple storage capacitors.
    Type: Application
    Filed: June 29, 2004
    Publication date: December 29, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Toshiharu Furukawa, Mark Hakey, David Horak, Charles Koburger, Mark Masters, Peter Mitchell
  • Publication number: 20050278667
    Abstract: The invention provides a method, system, and program product for diagnosing an integrated circuit. In particular, the invention captures one or more images for each relevant circuit layer of the integrated circuit. Based on the image(s), a component netlist is generated. Further, a logic netlist is generated by applying hierarchical composition rules to the component netlist. The component netlist and/or logic netlist can be compared to a reference netlist to diagnose the integrated circuit. The invention can further generate a schematic based on the component netlist or logic netlist in which components are arranged according to port, power, and/or component pin connection information determined from the netlist. Further, the schematic can be displayed in a manner that wiring connections are selectively displayed to assist a user in intelligently arranging the circuit components.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 15, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Matt Boucher, John Cohn, Richard Dauphin, Mark Masters, Judith McCullen, Sarah Braasch, Michael Sitko
  • Publication number: 20050189655
    Abstract: Conductive paths in an integrated circuit are formed using multiple undifferentiated carbon nanotubes embedded in a conductive metal, which is preferably copper. Preferably, conductive paths include vias running between conductive layers. Preferably, composite vias are formed by forming a metal catalyst pad on a conductor at the via site, depositing and etching a dielectric layer to form a cavity, growing substantially parallel carbon nanotubes on the catalyst in the cavity, and filling the remaining voids in the cavity with copper. The next conductive layer is then formed over the via hole.
    Type: Application
    Filed: February 26, 2004
    Publication date: September 1, 2005
    Applicant: International Business Machines Corporation
    Inventors: Toshiharu Furukawa, Mark Hakey, David Horak, Charles Koburger, Mark Masters, Peter Mitchell, Stanislav Polonsky