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: 12266598Abstract: 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: GrantFiled: October 24, 2022Date of Patent: April 1, 2025Assignee: International Business Machines CorporationInventors: Francesco Preda, Sungjun Chun, Jose A. Hejase, Junyan Tang, Pavel Roy Paladhi, Nam Huu Pham, Wiren Dale Becker, Daniel Mark Dreps
-
Publication number: 20240234284Abstract: 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: ApplicationFiled: October 24, 2022Publication date: July 11, 2024Inventors: Francesco PREDA, Sungjun CHUN, Jose A. HEJASE, Junyan TANG, Pavel ROY PALADHI, Nam Huu PHAM, Wiren Dale BECKER, Daniel Mark DREPS
-
Publication number: 20240136270Abstract: 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: ApplicationFiled: October 23, 2022Publication date: April 25, 2024Inventors: Francesco PREDA, Sungjun CHUN, Jose A. HEJASE, Junyan TANG, Pavel ROY PALADHI, Nam Huu PHAM, Wiren Dale BECKER, Daniel Mark DREPS
-
Patent number: 11388821Abstract: 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: GrantFiled: April 17, 2020Date of Patent: July 12, 2022Assignee: International Business Machines CorporationInventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
-
Patent number: 10956649Abstract: 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: GrantFiled: August 22, 2019Date of Patent: March 23, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Anson J. Call, Francesco Preda, Paul R. Walling
-
Publication number: 20200245466Abstract: 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: ApplicationFiled: April 17, 2020Publication date: July 30, 2020Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
-
Patent number: 10660209Abstract: 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: GrantFiled: November 14, 2017Date of Patent: May 19, 2020Assignee: International Business Machines CorporationInventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
-
Publication number: 20200075468Abstract: 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: ApplicationFiled: September 4, 2018Publication date: March 5, 2020Inventors: Charles L. Arvin, Franklin M. Baez, Francesco Preda
-
Publication number: 20190377850Abstract: 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: ApplicationFiled: August 22, 2019Publication date: December 12, 2019Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
-
Patent number: 10423752Abstract: 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: GrantFiled: September 29, 2017Date of Patent: September 24, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Anson J. Call, Francesco Preda, Paul R. Walling
-
Publication number: 20190150287Abstract: 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: ApplicationFiled: November 14, 2017Publication date: May 16, 2019Inventors: Charles L. Arvin, Brian W. Quinlan, Charles L. Reynolds, Jean Audet, Francesco Preda
-
Publication number: 20190102506Abstract: 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: ApplicationFiled: September 29, 2017Publication date: April 4, 2019Inventors: Anson J. Call, Francesco Preda, Paul R. Walling
-
Patent number: 8722536Abstract: 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: GrantFiled: August 5, 2013Date of Patent: May 13, 2014Assignee: International Business Machines CorporationInventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
-
Patent number: 8716851Abstract: 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: GrantFiled: March 12, 2012Date of Patent: May 6, 2014Assignee: International Business Machines CorporationInventors: Francesco Preda, Lloyd A. Walls
-
Publication number: 20130316534Abstract: 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: ApplicationFiled: August 5, 2013Publication date: November 28, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
-
Patent number: 8586476Abstract: 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: GrantFiled: September 2, 2010Date of Patent: November 19, 2013Assignee: International Business Machines CorporationInventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
-
Publication number: 20120174047Abstract: 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: ApplicationFiled: March 12, 2012Publication date: July 5, 2012Applicant: International Business Machines CorporationInventors: Francesco Preda, Lloyd A. Walls
-
Patent number: 8158461Abstract: 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: GrantFiled: June 24, 2009Date of Patent: April 17, 2012Assignee: International Business Machines CorporationInventors: Francesco Preda, Lloyd A. Walls
-
Patent number: 7863724Abstract: 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: GrantFiled: February 12, 2008Date of Patent: January 4, 2011Assignee: International Business Machines CorporationInventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls
-
Publication number: 20100330797Abstract: 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: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Daniel Douriet, Francesco Preda, Brian L. Singletary, Lloyd A. Walls