Patents by Inventor Francesco Preda

Francesco Preda 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: 12266598
    Abstract: An enhanced integrated circuit interconnect package, method and multiple-layer integrated circuit laminate structure enable increased routing density per layer and maintains signal integrity performance. A differential signal via pair of vertical interconnect vias provide differential signaling. The vias of the differential signal via pair are positioned closely spaced together with each via offset from a center axis of an associated LGA contact, minimizing space between the differential signal vias and maintaining signal integrity performance, and providing increased available wiring signal channel.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: April 1, 2025
    Assignee: International Business Machines Corporation
    Inventors: Francesco Preda, Sungjun Chun, Jose A. Hejase, Junyan Tang, Pavel Roy Paladhi, Nam Huu Pham, Wiren Dale Becker, Daniel Mark Dreps
  • Publication number: 20240234284
    Abstract: An enhanced integrated circuit interconnect package, method and multiple-layer integrated circuit laminate structure enable increased routing density per layer and maintains signal integrity performance. A differential signal via pair of vertical interconnect vias provide differential signaling. The vias of the differential signal via pair are positioned closely spaced together with each via offset from a center axis of an associated LGA contact, minimizing space between the differential signal vias and maintaining signal integrity performance, and providing increased available wiring signal channel.
    Type: Application
    Filed: October 24, 2022
    Publication date: July 11, 2024
    Inventors: Francesco PREDA, Sungjun CHUN, Jose A. HEJASE, Junyan TANG, Pavel ROY PALADHI, Nam Huu PHAM, Wiren Dale BECKER, Daniel Mark DREPS
  • Publication number: 20240136270
    Abstract: An enhanced integrated circuit interconnect package, method and multiple-layer integrated circuit laminate structure enable increased routing density per layer and maintains signal integrity performance. A differential signal via pair of vertical interconnect vias provide differential signaling. The vias of the differential signal via pair are positioned closely spaced together with each via offset from a center axis of an associated LGA contact, minimizing space between the differential signal vias and maintaining signal integrity performance, and providing increased available wiring signal channel.
    Type: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Inventors: Francesco PREDA, Sungjun CHUN, Jose A. HEJASE, Junyan TANG, Pavel ROY PALADHI, Nam Huu PHAM, Wiren Dale BECKER, Daniel Mark DREPS
  • Patent number: 11388821
    Abstract: A device substrate includes a core material. A capacitor sheet can be affixed adjacent to a surface of the core material, where the capacitor sheet covers the surface of the core material. A first opening can extend through both capacitor sheet and the core material, where the first opening are larger than a substrate pass through-hole. An electrically inert material can fill the first opening. A second opening can extend parallel to the first opening through the electrically inert material, where the second opening is at least as large as the substrate pass through-hole and having sidewalls enclosed within the electrically inert material.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: July 12, 2022
    Assignee: International Business Machines Corporation
    Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
  • Patent number: 10956649
    Abstract: Embodiments of the invention include methods, systems, and computer program products for checking metal coverage in a laminate structure. Aspects of the invention include receiving, by a processor, metal shadowing rules and a semiconductor package design comprising a plurality of laminate layers, a plurality of metal power shapes, and a plurality of signal lines. Each metal power shape is mapped to one or more cells in a two-dimensional array. The processor determines, for each signal line in the semiconductor package design, whether the metal power shapes satisfy the metal shadowing rules. The processor displays a list of signal lines that do not satisfy the metal shadowing rules.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
  • Publication number: 20200245466
    Abstract: A device substrate includes a core material. A capacitor sheet can be affixed adjacent to a surface of the core material, where the capacitor sheet covers the surface of the core material. A first opening can extend through both capacitor sheet and the core material, where the first opening are larger than a substrate pass through-hole. An electrically inert material can fill the first opening. A second opening can extend parallel to the first opening through the electrically inert material, where the second opening is at least as large as the substrate pass through-hole and having sidewalls enclosed within the electrically inert material.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
  • Patent number: 10660209
    Abstract: A method includes affixing a capacitor sheet adjacent to core material of a device substrate, where the capacitor sheet covers a surface of the core material. The method also includes patterning first openings through both capacitor sheet and the core material, where the first openings are larger than a substrate pass through-hole. The method additionally includes filling the first openings with an electrically inert material. The method further includes patterning a second openings parallel to the first openings through the electrically inert material, where the second openings are at least as large as the substrate pass through-hole and having sidewalls enclosed within the electrically inert material.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: May 19, 2020
    Assignee: International Business Machines Corporation
    Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
  • Publication number: 20200075468
    Abstract: An integrated circuit (IC) chip carrier includes one or more internal metal planes. A dedicated metal plane (DMP) may be formed upon a metal plane dielectric layer. The metal plane dielectric layer may be formed upon a first dielectric layer that is formed upon an IC chip carrier core. The DMP may be formed of the same or different material relative to the material of the wires of the IC chip carrier. The side surfaces of the DMP may be coplanar with associated side surfaces of the IC chip carrier. The DMP may transfer heat from the IC chip horizontally to its side surfaces. A decoupling capacitor is externally connected to the IC chip carrier and is electrically connected to the DMP. By connecting the decoupling capacitor to the DMP, the decoupling capacitor may further reduce inductance and noise within the IC chip system.
    Type: Application
    Filed: September 4, 2018
    Publication date: March 5, 2020
    Inventors: Charles L. Arvin, Franklin M. Baez, Francesco Preda
  • Publication number: 20190377850
    Abstract: Embodiments of the invention include methods, systems, and computer program products for checking metal coverage in a laminate structure. Aspects of the invention include receiving, by a processor, metal shadowing rules and a semiconductor package design comprising a plurality of laminate layers, a plurality of metal power shapes, and a plurality of signal lines. Each metal power shape is mapped to one or more cells in a two-dimensional array. The processor determines, for each signal line in the semiconductor package design, whether the metal power shapes satisfy the metal shadowing rules. The processor displays a list of signal lines that do not satisfy the metal shadowing rules.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 12, 2019
    Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
  • Patent number: 10423752
    Abstract: Embodiments of the invention include methods, systems, and computer program products for checking metal coverage in a laminate structure. Aspects of the invention include receiving, by a processor, metal shadowing rules and a semiconductor package design comprising a plurality of laminate layers, a plurality of metal power shapes, and a plurality of signal lines. Each metal power shape is mapped to one or more cells in a two-dimensional array. The processor determines, for each signal line in the semiconductor package design, whether the metal power shapes satisfy the metal shadowing rules. The processor displays a list of signal lines that do not satisfy the metal shadowing rules.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 24, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
  • Publication number: 20190150287
    Abstract: A method includes affixing a capacitor sheet adjacent to core material of a device substrate, where the capacitor sheet covers a surface of the core material. The method also includes patterning first openings through both capacitor sheet and the core material, where the first openings are larger than a substrate pass through-hole. The method additionally includes filling the first openings with an electrically inert material. The method further includes patterning a second openings parallel to the first openings through the electrically inert material, where the second openings are at least as large as the substrate pass through-hole and having sidewalls enclosed within the electrically inert material.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 16, 2019
    Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
  • Publication number: 20190102506
    Abstract: Embodiments of the invention include methods, systems, and computer program products for checking metal coverage in a laminate structure. Aspects of the invention include receiving, by a processor, metal shadowing rules and a semiconductor package design comprising a plurality of laminate layers, a plurality of metal power shapes, and a plurality of signal lines. Each metal power shape is mapped to one or more cells in a two-dimensional array. The processor determines, for each signal line in the semiconductor package design, whether the metal power shapes satisfy the metal shadowing rules. The processor displays a list of signal lines that do not satisfy the metal shadowing rules.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
  • Patent number: 8722536
    Abstract: A circuit substrate uses post-fed top side power supply connections to provide improved routing flexibility and lower power supply voltage drop/power loss. Plated-through holes are used near the outside edges of the substrate to provide power supply connections to the top metal layers of the substrate adjacent to the die, which act as power supply planes. Pins are inserted through the plated-through holes to further lower the resistance of the power supply path(s). The bottom ends of the pins may extend past the bottom of the substrate to provide solderable interconnects for the power supply connections, or the bottom ends of the pins may be soldered to “jog” circuit patterns on a bottom metal layer of the substrate which connect the pins to one or more power supply terminals of an integrated circuit package including the substrate.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: May 13, 2014
    Assignee: International Business Machines Corporation
    Inventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
  • Patent number: 8716851
    Abstract: A mechanism for continuously referencing signals over multiple layers in laminate packages provides a continuous path for signals from one layer to another while using the ideal voltage reference for all areas of the package and still avoiding discontinuities in the voltage reference. A reference plane adjustment engine analyzes a package design and identifies an ideal top plane for all areas of the package, including areas under particular chip die(s) and areas that are not under a chip die. The reference plane adjustment engine then modifies the package design to reposition ground planes, source voltage planes, signal planes, and vias between layers to maintain a continuous voltage reference regardless of the top layer. The reference plane adjustment engine provides the resulting mixed voltage plane package design to a design analysis engine. A package fabrication system fabricates the package.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Francesco Preda, Lloyd A. Walls
  • Publication number: 20130316534
    Abstract: A circuit substrate uses post-fed top side power supply connections to provide improved routing flexibility and lower power supply voltage drop/power loss. Plated-through holes are used near the outside edges of the substrate to provide power supply connections to the top metal layers of the substrate adjacent to the die, which act as power supply planes. Pins are inserted through the plated-through holes to further lower the resistance of the power supply path(s). The bottom ends of the pins may extend past the bottom of the substrate to provide solderable interconnects for the power supply connections, or the bottom ends of the pins may be soldered to “jog” circuit patterns on a bottom metal layer of the substrate which connect the pins to one or more power supply terminals of an integrated circuit package including the substrate.
    Type: Application
    Filed: August 5, 2013
    Publication date: November 28, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
  • Patent number: 8586476
    Abstract: A circuit substrate uses post-fed top side power supply connections to provide improved routing flexibility and lower power supply voltage drop/power loss. Plated-through holes are used near the outside edges of the substrate to provide power supply connections to the top metal layers of the substrate adjacent to the die, which act as power supply planes. Pins are inserted through the plated-through holes to further lower the resistance of the power supply path(s). The bottom ends of the pins may extend past the bottom of the substrate to provide solderable interconnects for the power supply connections, or the bottom ends of the pins may be soldered to “jog” circuit patterns on a bottom metal layer of the substrate which connect the pins to one or more power supply terminals of an integrated circuit package including the substrate.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 19, 2013
    Assignee: International Business Machines Corporation
    Inventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
  • Publication number: 20120174047
    Abstract: A mechanism for continuously referencing signals over multiple layers in laminate packages provides a continuous path for signals from one layer to another while using the ideal voltage reference for all areas of the package and still avoiding discontinuities in the voltage reference. A reference plane adjustment engine analyzes a package design and identifies an ideal top plane for all areas of the package, including areas under particular chip die(s) and areas that are not under a chip die. The reference plane adjustment engine then modifies the package design to reposition ground planes, source voltage planes, signal planes, and vias between layers to maintain a continuous voltage reference regardless of the top layer. The reference plane adjustment engine provides the resulting mixed voltage plane package design to a design analysis engine. A package fabrication system fabricates the package.
    Type: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Applicant: International Business Machines Corporation
    Inventors: Francesco Preda, Lloyd A. Walls
  • Patent number: 8158461
    Abstract: A mechanism for continuously referencing signals over multiple layers in laminate packages provides a continuous path for signals from one layer to another while using the ideal voltage reference for all areas of the package and still avoiding discontinuities in the voltage reference. A reference plane adjustment engine analyzes a package design and identifies an ideal top plane for all areas of the package, including areas under particular chip die(s) and areas that are not under a chip die. The reference plane adjustment engine then modifies the package design to reposition ground planes, source voltage planes, signal planes, and vias between layers to maintain a continuous voltage reference regardless of the top layer. The reference plane adjustment engine provides the resulting mixed voltage plane package design to a design analysis engine. A package fabrication system fabricates the package.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Francesco Preda, Lloyd A. Walls
  • Patent number: 7863724
    Abstract: A circuit substrate uses post-fed top side power supply connections to provide improved routing flexibility and lower power supply voltage drop/power loss. Plated-through holes are used near the outside edges of the substrate to provide power supply connections to the top metal layers of the substrate adjacent to the die, which act as power supply planes. Pins are inserted through the plated-through holes to further lower the resistance of the power supply path(s). The bottom ends of the pins may extend past the bottom of the substrate to provide solderable interconnects for the power supply connections, or the bottom ends of the pins may be soldered to “jog” circuit patterns on a bottom metal layer of the substrate which connect the pins to one or more power supply terminals of an integrated circuit package including the substrate.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: January 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
  • Publication number: 20100330797
    Abstract: A circuit substrate uses post-fed top side power supply connections to provide improved routing flexibility and lower power supply voltage drop/power loss. Plated-through holes are used near the outside edges of the substrate to provide power supply connections to the top metal layers of the substrate adjacent to the die, which act as power supply planes. Pins are inserted through the plated-through holes to further lower the resistance of the power supply path(s). The bottom ends of the pins may extend past the bottom of the substrate to provide solderable interconnects for the power supply connections, or the bottom ends of the pins may be soldered to “jog” circuit patterns on a bottom metal layer of the substrate which connect the pins to one or more power supply terminals of an integrated circuit package including the substrate.
    Type: Application
    Filed: September 2, 2010
    Publication date: December 30, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls