Patents by Inventor Kamal K. Sikka

Kamal K. Sikka 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: 20240203822
    Abstract: A chip and cooler assembly includes an active or passive interposer that has a front side and a back side. Integrated circuit chips are mounted onto the back side of the interposer. Each of the chips has a front side that is attached to the interposer and a back side that faces away from the interposer. Gaps separate the chips. The assembly also includes a frame that is fitted into the gaps between the chips. The frame is CTE-matched to the chips. The frame and the chips define a back side surface. A cooler module is attached to the back side surface. The cooler module is CTE-matched to the chips. The cooler module includes a microchannel cooler that is disposed directly against the back sides of the chips and a manifold that is attached to the microchannel cooler opposite the chips. The manifold is CTE-matched to the microchannel cooler.
    Type: Application
    Filed: December 18, 2022
    Publication date: June 20, 2024
    Inventors: Evan Colgan, Jae-Woong Nah, Katsuyuki Sakuma, Kamal K. Sikka, Joshua M. Rubin, Frank Robert Libsch
  • Patent number: 11887908
    Abstract: An electronic structure includes offset three-dimensional stacked chips; and a two-piece lid structure configured to extract heat from the bottom and top of the stacked chips.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: January 30, 2024
    Assignee: International Business Machines Corporation
    Inventors: Kamal K. Sikka, Katsuyuki Sakuma, Hilton T. Toy, Shidong Li, Ravi K Bonam
  • Patent number: 11825592
    Abstract: An electronic device console includes a console body that houses a chip package, and a duct extending from the console body. An interior volume of the duct is in fluid communication with an interior volume of the console body. A first vent is at a distal end of the duct. A second vent is in a wall of the console body. The console may be oriented in a first orientation and a second orientation. The duct functions as a chimney for natural convection cooling of the chip package when the console is oriented in the first orientation. The console body functions as a chimney for natural convection cooling of the chip package when the console is oriented in the second orientation.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: November 21, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kamal K. Sikka, Chenzhou Lian, Kathryn C. Rivera, Paul F. Bodenweber, Jon A. Casey
  • Patent number: 11791270
    Abstract: A direct bonded heterogeneous integration (DBHi) device includes a substrate including a trench formed in a top surface of the substrate. The DBHi device further includes a first chip coupled to the substrate on a first side of the trench by a plurality of first interconnects. The DBHi device further includes a second chip coupled to the substrate on a second side of the trench by a plurality of second interconnects. The second side of the trench is arranged opposite the first side of the trench. The DBHi device further includes a bridge coupled to the first chip and to the second chip by a plurality of third interconnects such that the bridge is suspended in the trench. The DBHi device further includes a non-conductive paste material surrounding the plurality of third interconnects to further couple the bridge to the first chip and to the second chip.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: October 17, 2023
    Assignee: International Business Machines Corporation
    Inventors: Kamal K Sikka, Maryse Cournoyer, Pascale Gagnon, Charles C. Bureau, Catherine Dufort, Dale Curtis McHerron, Vijayeshwar Das Khanna, Marc A. Bergendahl, Dishit Paresh Parekh, Ravi K. Bonam, Hiroyuki Mori, Yang Liu, Paul S. Andry, Isabel De Sousa
  • Publication number: 20230314701
    Abstract: A bridge chip of an IC packaging structure includes E/O and O/E converters and a first wiring pattern interconnecting the converters to host chips and a second wiring pattern electrically connected to the host chips. An optical interface outputs the optical signals from a backside surface of the bridge chip. The optical interface receives optical signals through the backside surface. Electrical through links connected to the second wiring pattern output electrical signals generated by the host chips through the backside surface of the bridge chip. The packaging structure includes substrate with a trench provided in the top surface of the substrate and the bridge chip disposed in the trench. The host chips are directly connected to the top surface of the bridge chip and the top surface of the substrate. Optical signals are output from the packaging structure through an opening in the bottom surface of the substrate.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 5, 2023
    Inventors: Frank Robert Libsch, Kamal K. Sikka, Arvind Kumar
  • Publication number: 20230317694
    Abstract: A device and associated method include using an optical element (OE) for electrical and optical communications on the device. A substrate includes a wiring layer with an optically transparent path which allows optical signals to pass therethrough. An optical coupling layer is coupled to the wiring layer, and the optical coupling layer includes at least one micro-lens for focusing or collimating the optical signals through the transparent path. An OE is coupled to the wiring layer, and the OE is positioned in optical alignment with the optically transparent path for communicating optical signals. One or more semiconductor chips can be communicatively coupled to an OE for controlling the OE.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 5, 2023
    Inventors: Frank Robert Libsch, Kamal K. Sikka, Arvind Kumar
  • Publication number: 20230257513
    Abstract: A composition, process, and device are disclosed. The composition includes a polymer formed by reacting an epoxy compound with an amine curing agent. The epoxy compound comprises a Diels-Alder dimer and an ester moiety. The process includes providing a polymer formed by reacting the epoxy compound with the amine curing agent. The device includes a material that includes the polymer.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 17, 2023
    Inventors: Rudy J. Wojtecki, Gregory Breyta, Kamal K. Sikka, Teddie P. Magbitang
  • Publication number: 20230197552
    Abstract: An electronic structure includes offset three-dimensional stacked chips; and a two-piece lid structure configured to extract heat from the bottom and top of the stacked chips.
    Type: Application
    Filed: December 21, 2021
    Publication date: June 22, 2023
    Inventors: Kamal K. Sikka, Katsuyuki Sakuma, Hilton T. Toy, Shidong Li, Ravi K. Bonam
  • Publication number: 20230197658
    Abstract: A flip chip device and methods for fabrication are provided. An interconnect layer for a device include a plurality of solder bumps arranged within the interconnect layer. A first subset of the plurality of solder bumps has a first cross-sectional area, where the first subset is arranged along a first position at a first edge of the interconnect layer. A second subset of the plurality of solder bumps has a second cross-sectional area, where the second subset is arranged at a second position of the interconnect layer. A third subset of the plurality of solder bumps is arranged between the first position and the second position, where the third subset has a plurality of cross-sectional areas.
    Type: Application
    Filed: December 21, 2021
    Publication date: June 22, 2023
    Inventors: Kamal K. SIKKA, Charles Leon ARVIN, Thomas Edward LOMBARDI, Piyas Bal CHOWDHURY, Alfred GRILL, Steven Lorenz WRIGHT
  • Patent number: 11527462
    Abstract: In some examples, an electronic package and methods for forming the electronic package are described. The electronic package can be formed by disposing an interposer on a surface of a substrate having a first pitch wiring density. The interposer can have a second pitch wiring density different from the first pitch wiring density. A layer of non-conductive film can be situated between the interposer and the surface of the substrate. A planarization process can be performed on a surface of the substrate. A solder resist patterning can be performed on the planarized surface the substrate. A solder reflow and coining process can be performed to form a layer of solder bumps on top of the planarized surface of the substrate. The interposer can provide bridge connection between at least two die disposed above the substrate. Solder bumps under the interposer electrically connect the substrate and the interposer.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 13, 2022
    Assignee: International Business Machines Corporation
    Inventors: Katsuyuki Sakuma, Shidong Li, Kamal K. Sikka
  • Publication number: 20220359401
    Abstract: A direct bonded heterogeneous integration (DBHi) device includes a substrate including a trench formed in a top surface of the substrate. The DBHi device further includes a first chip coupled to the substrate on a first side of the trench by a plurality of first interconnects. The DBHi device further includes a second chip coupled to the substrate on a second side of the trench by a plurality of second interconnects. The second side of the trench is arranged opposite the first side of the trench. The DBHi device further includes a bridge coupled to the first chip and to the second chip by a plurality of third interconnects such that the bridge is suspended in the trench. The DBHi device further includes a non-conductive paste material surrounding the plurality of third interconnects to further couple the bridge to the first chip and to the second chip.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 10, 2022
    Inventors: Kamal K. Sikka, Maryse Cournoyer, Pascale Gagnon, Charles C. Bureau, Catherine Dufort, Dale Curtis McHerron, Vijayeshwar Das Khanna, Marc A. Bergendahl, Dishit Paresh Parekh, RAVI K. BONAM, HIROYUKI MORI, Yang Liu, Paul S. Andry, Isabel De Sousa
  • Patent number: 11462512
    Abstract: The subject disclosure relates to 3D microelectronic chip packages with embedded coolant channels. The disclosed 3D microelectronic chip packages provide a complete and practical mechanism for introducing cooling channels within the 3D chip stack while maintaining the electrical connection through the chip stack. According to an embodiment, a microelectronic package is provided that comprises a first silicon chip comprising first coolant channels interspersed between first thru-silicon-vias (TSVs). The microelectronic chip package further comprises a silicon cap attached to a first surface of the first silicon chip, the silicon cap comprising second TSVs that connect to the first TSVs. A second silicon chip comprising second coolant channels can further be attached to the silicon cap via interconnects formed between a first surface of the second silicon chip and the silicon cap, wherein the interconnects connect to the second TSVs.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: October 4, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kamal K. Sikka, Fee Li Lie, Kevin Winstel, Ravi K. Bonam, Iqbal Rashid Saraf, Dario Goldfarb, Daniel Corliss, Dinesh Gupta
  • Patent number: 11410905
    Abstract: A heat spreader is disclosed with regions where material is absent to reduce the mass/weight of the heat spreader without substantially reducing the temperature of the semiconductor chip and without substantially affecting the warpage and mechanical stress/strain in the electronic package.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 9, 2022
    Assignee: International Business Machines Corporation
    Inventors: Kamal K. Sikka, Kenneth Marston, Tuhin Sinha, Shidong Li
  • Publication number: 20220157685
    Abstract: A chip package comprises a chip having a first temperature sensor. The first temperature sensor is configured to measure a first temperature of the chip in a localized area around the first temperature sensor. The chip package also includes a chip carrier coupled to the chip via a plurality of solder connections. The chip carrier includes a second temperature sensor vertically aligned with the first temperature sensor. The second temperature sensor is configured to measure a second temperature of the chip carrier in a localized area around the second temperature sensor. The chip carrier further includes a localized heater element located near the second temperature sensor and configured to generate heat in response to a detected difference based on comparison of the first temperature and the second temperature such that the detected difference is adjusted in the localized area around the first temperature sensor.
    Type: Application
    Filed: November 13, 2020
    Publication date: May 19, 2022
    Inventors: Kamal K. Sikka, Shidong Li, Tuhin Sinha, Jeffrey Allen Zitz
  • Patent number: 11302651
    Abstract: A technique relates to an electronic package. A substrate is configured to receive a chip. A stiffener is attached to the substrate. The stiffener includes a core material with a first material formed on opposing sides of the core material.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: April 12, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kamal K. Sikka, Krishna R. Tunga, Hilton T. Toy, Thomas Weiss, Shidong Li, Sushumna Iruvanti
  • Patent number: 11264306
    Abstract: Structural combinations of TIMs and methods of combining these TIMs in semiconductor packages are disclosed. An embodiment forms the structures by selectively metallizing a backside of a semiconductor chip (chip) on chip hot spots, placing a higher performance thermal interface material (TIM) on the metallized hot spots, selectively metalizing an underside of a lid in one or more metalized lid locations, and assembling a lid over the backside of the chip to create an assembly so that metalized lid locations are in contact with the higher performance TIMs. A lower performance TIM fills the region surrounding the higher performance TIM on the underside of the lid enclosing the chips. Disclosed are methods of disposing both solid and dispensable TIMs, curing and not curing the thermal interface, and structures to keep the TIMs in place while assembly the package and compressing dispensable TIMs.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 1, 2022
    Assignee: International Business Machines Corporation
    Inventors: Kamal K. Sikka, Piyas Bal Chowdhury, James J. Kelly, Jeffrey Allen Zitz, Sushumna Iruvanti, Shidong Li
  • Patent number: 11177217
    Abstract: Direct bonding heterogeneous integration packaging structures and processes include a packaging substrate with first and second opposing surfaces. A trench or a pedestal is provided in the first surface. A bridge is disposed in the trench or is adjacent the pedestal sidewall, wherein the bridge includes an upper surface coplanar with the first surface of the package substrate. At least two chips in a side by side proximal arrangement overly the bridge and the packaging substrate, wherein the bridge underlies peripheral edges of the at least two chips in the side by side proximal arrangement. The at least two chips include a plurality of electric connections that are directly coupled to corresponding electrical connections on the bridge and on the packaging substrate.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: November 16, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kamal K. Sikka, Jon A. Casey, Joshua Rubin, Arvind Kumar, Dinesh Gupta, Charles L. Arvin, Mark W. Kapfhammer, Steve Ostrander, Maryse Cournoyer, Valérie A. Oberson, Lawrence A. Clevenger
  • Patent number: 11164817
    Abstract: Techniques are provided for constructing multi-chip package structures. For example, a multi-chip package structure includes a package substrate, an interconnect bridge device, a first chip package, and a second chip package. The first chip package includes a first redistribution layer structure, and a first integrated circuit chip connected to the first redistribution layer structure. The first redistribution layer structure is connected to the interconnect bridge device and to the package substrate. The second chip package includes a second redistribution layer structure, and a second integrated circuit chip connected to the second redistribution layer structure. The second redistribution layer structure is connected to the interconnect bridge device and to the package substrate. The interconnect bridge device includes wiring to provide package-to-package connections between the first and second chip packages.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: November 2, 2021
    Assignee: International Business Machines Corporation
    Inventors: Joshua M. Rubin, Kamal K. Sikka, Steven Lorenz Wright, Lawrence A. Clevenger
  • Patent number: 11139269
    Abstract: An electronic package and a method of manufacture includes a substrate having an upper surface with a trench formed in a bridge region. First pads are arranged on the upper surface of the substrate, outside of the bridge region, and a bridge is positioned in the trench. A plurality of second pads are arranged on an upper surface of the bridge. A plurality of pillars are electrically coupled to the plurality of second pads. Two or more semiconductor chips are positioned in a side-by-side proximal arrangement overlaying the bridge and the substrate. A first semiconductor chip is joined to the bridge, then a second semiconductor chip is joined to the bridge, followed by attaching the chip-bridge assembly to the substrate with the bridge positioned within the substrate trench. Each of the two or more semiconductor chips have first electrical connections including bumps, and second electrical connections including third pads.
    Type: Grant
    Filed: January 25, 2020
    Date of Patent: October 5, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kamal K. Sikka, Paul S. Andry, Yang Liu, Pascale Gagnon, Christian Bergeron, Maryse Cournoyer
  • Patent number: 11101191
    Abstract: The present invention includes embodiments of a semiconductor package designed to transfer heat from one or more bridges within the package to ambient external to the package in addition to conducting the heat through any semiconductor chips encapsulated within the package. A laminated substrate has one or more horizontal layer heat conduction paths and one or more vertical substrate heat conduction paths. The vertical substrate heat conduction paths collect heat from one or more of the horizontal layer heat conduction paths, and eventually conduct the heat out of the semiconductor package, e.g. into a lid or heat sink.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 24, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kamal K. Sikka, Hiroyuki Mori