Patents by Inventor Rajasekaran Swaminathan

Rajasekaran Swaminathan 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: 20240038596
    Abstract: An apparatus and method for efficiently increasing semiconductor chip functionality in a particular area. A semiconductor fabrication process (or process) grows a silicon substrate layer, and forms multiple p-type and n-type transistors along a front side surface of the silicon substrate layer. The process flips the silicon substrate layer and removes silicon substrate leaving a particular thickness of the silicon substrate layer. The process forms multiple p-type and n-type transistors along the back side surface of the silicon substrate layer, and forms metal layers that connect terminals of the transistors formed along the back side surface to particular signals. The process forms through silicon vias (TSVs) that traverse through the silicon substrate layer. The process again flips the silicon substrate layer, and forms metal layers that connect terminals of the transistors formed along the front side surface to particular signals.
    Type: Application
    Filed: July 26, 2022
    Publication date: February 1, 2024
    Inventors: Chandra Sekhar Mandalapu, Rahul Agarwal, Rajasekaran Swaminathan, Richard T. Schultz
  • Publication number: 20240030086
    Abstract: Embodiments include semiconductor packages and methods of forming such packages. A semiconductor package includes a die on a package substrate, an integrated heat spreader (IHS) on the package substrate and above the die, and a solder thermal interface material (STIM) coupling the die to the IHS. The semiconductor package includes a low-temperature solder (LTS) paste comprising an alloy of tin and bismuth (Bi), and the LTS paste on a bottom surface of the package substrate having a ball grid array. The LTS paste may have a weight percentage of Bi greater than 35% and a melting point less than or equal to a melting point of the STIM, where the STIM includes indium. The weight percentage of Bi may be between approximately 35% to 58%. The semiconductor package may include a solder ball coupling the LTS paste on the package substrate to the LTS paste on a second package substrate.
    Type: Application
    Filed: October 3, 2023
    Publication date: January 25, 2024
    Inventors: Rajasekaran SWAMINATHAN, Mukul RENAVIKAR
  • Publication number: 20240030116
    Abstract: Ultra-thin, hyper-density semiconductor packages and techniques of forming such packages are described. An exemplary semiconductor package is formed with one or more of: (i) metal pillars having an ultra-fine pitch (e.g., a pitch that is greater than or equal to 150 ?m, etc.); (ii) a large die-to-package ratio (e.g., a ratio that is equal to or greater than 0.85, etc.); and (iii) a thin pitch translation interposer. Another exemplary semiconductor package is formed using coreless substrate technology, die back metallization, and low temperature solder technology for ball grid array (BGA) metallurgy. Other embodiments are described.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Inventors: Debendra MALLIK, Robert L. SANKMAN, Robert NICKERSON, Mitul MODI, Sanka GANESAN, Rajasekaran SWAMINATHAN, Omkar KARHADE, Shawna M. LIFF, Amruthavalli ALUR, Sri Chaitra J. CHAVALI
  • Publication number: 20240006290
    Abstract: An apparatus and method for efficiently transferring information as signals through a silicon package substrate. A semiconductor fabrication process (or process) begins with a relatively thin package substrate core layer and uses lasers to create openings in the package substrate at locations of the signal routes. The use of each of the relatively thin core layer and the lasers allows for reduction in the pitch of the signal routes. The process creates signal routes in the openings using stacked vias from one side of the package substrate to an opposite side of the package substrate. Additionally, the process forms the package substrate with multiple embedded passive components with different thicknesses in different layers of the package substrate. The embedded passive components are used to improve signal integrity of the signal routes.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 4, 2024
    Inventors: Sriranga Sai Boyapati, Deepak Vasant Kulkarni, Rajasekaran Swaminathan
  • Patent number: 11817364
    Abstract: Embodiments include semiconductor packages and methods of forming such packages. A semiconductor package includes a die on a package substrate, an integrated heat spreader (IHS) on the package substrate and above the die, and a solder thermal interface material (STIM) coupling the die to the IHS. The semiconductor package includes a low-temperature solder (LTS) paste comprising an alloy of tin and bismuth (Bi), and the LTS paste on a bottom surface of the package substrate having a ball grid array. The LTS paste may have a weight percentage of Bi greater than 35% and a melting point less than or equal to a melting point of the STIM, where the STIM includes indium. The weight percentage of Bi may be between approximately 35% to 58%. The semiconductor package may include a solder ball coupling the LTS paste on the package substrate to the LTS paste on a second package substrate.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 14, 2023
    Assignee: Intel Corporation
    Inventors: Rajasekaran Swaminathan, Mukul Renavikar
  • Publication number: 20230352412
    Abstract: A multiple die package is described that has an embedded bridge to connect the dies. One example is a microelectronic package that includes a package substrate, a silicon bridge embedded in the substrate, a first interconnect having a first plurality of contacts at a first location of the silicon bridge, a second interconnect having a second plurality of contacts at a second location of the silicon bridge, a third interconnect having a third plurality of contacts at a third location of the silicon bridge, and an electrically conductive line in the silicon bridge connecting a contact of the first interconnect, a contact of the second interconnect, and a contact of the third interconnect each to each other.
    Type: Application
    Filed: July 12, 2023
    Publication date: November 2, 2023
    Inventors: Yidnekachew S. MEKONNEN, Kemel AYGUN, Ravindranath V. MAHAJAN, Christopher S. BALDWIN, Rajasekaran SWAMINATHAN
  • Publication number: 20230290728
    Abstract: Various embodiments relate to a semiconductor package. The semiconductor package includes a first die. The first die includes a first bridge interconnect region. The semiconductor package further includes a second die. The second die includes a second bridge interconnect region. The semiconductor package includes a bridge die. The bridge die includes a first contact area to connect to the first bridge interconnect region and a second contact area to connect to the second bridge interconnect region. In the semiconductor package, the first bridge interconnect region is larger than the second bridge interconnect region. Additionally, each of the first bridge interconnect region and the second bridge interconnect region include a plurality of conductive bumps. An average pitch between adjacent bumps of the first bridge interconnect region is larger than an average pitch between adjacent bumps of the second bridge interconnect region.
    Type: Application
    Filed: May 19, 2023
    Publication date: September 14, 2023
    Inventors: Andrew COLLINS, Bharat P. PENMECHA, Rajasekaran SWAMINATHAN, Ram VISWANATH
  • Patent number: 11742293
    Abstract: A multiple die package is described that has an embedded bridge to connect the dies. One example is a microelectronic package that includes a package substrate, a silicon bridge embedded in the substrate, a first interconnect having a first plurality of contacts at a first location of the silicon bridge, a second interconnect having a second plurality of contacts at a second location of the silicon bridge, a third interconnect having a third plurality of contacts at a third location of the silicon bridge, and an electrically conductive line in the silicon bridge connecting a contact of the first interconnect, a contact of the second interconnect, and a contact of the third interconnect each to each other.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 29, 2023
    Assignee: Intel Corporation
    Inventors: Yidnekachew S. Mekonnen, Kemel Aygun, Ravindranath V. Mahajan, Christopher S. Baldwin, Rajasekaran Swaminathan
  • Patent number: 11705398
    Abstract: Various embodiments relate to a semiconductor package. The semiconductor package includes a first die. The first die includes a first bridge interconnect region. The semiconductor package further includes a second die. The second die includes a second bridge interconnect region. The semiconductor package includes a bridge die. The bridge die includes a first contact area to connect to the first bridge interconnect region and a second contact area to connect to the second bridge interconnect region. In the semiconductor package, the first bridge interconnect region is larger than the second bridge interconnect region. Additionally, each of the first bridge interconnect region and the second bridge interconnect region include a plurality of conductive bumps. An average pitch between adjacent bumps of the first bridge interconnect region is larger than an average pitch between adjacent bumps of the second bridge interconnect region.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: July 18, 2023
    Assignee: Intel Corporation
    Inventors: Andrew Collins, Bharat P. Penmecha, Rajasekaran Swaminathan, Ram Viswanath
  • Publication number: 20230138543
    Abstract: Ultra-thin, hyper-density semiconductor packages and techniques of forming such packages are described. An exemplary semiconductor package is formed with one or more of: (i) metal pillars having an ultra-fine pitch (e.g., a pitch that is greater than or equal to 150 ?m, etc.); (ii) a large die-to-package ratio (e.g., a ratio that is equal to or greater than 0.85, etc.); and (iii) a thin pitch translation interposer. Another exemplary semiconductor package is formed using coreless substrate technology, die back metallization, and low temperature solder technology for ball grid array (BGA) metallurgy. Other embodiments are described.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 4, 2023
    Inventors: Debendra MALLIK, Robert L. SANKMAN, Robert NICKERSON, Mitul MODI, Sanka GANESAN, Rajasekaran SWAMINATHAN, Omkar KARHADE, Shawna M. LIFF, Amruthavalli ALUR, Sri Chaitra J. CHAVALI
  • Publication number: 20230102183
    Abstract: Apparatuses, systems and methods for efficiently generating a package substrate. A semiconductor fabrication process (or process) fabricates each of a first glass package substrate and a second glass package substrate with a redistribution layer on a single side of a respective glass wafer. The process flips the second glass package substrate upside down and connects the glass wafers of the first and second glass package substrates together using a wafer bonding technique. In some implementations, the process uses copper-based wafer bonding. The resulting bonding between the two glass wafers contains no air gap, no underfill, and no solder bumps. Afterward, the side of the first glass package substrate opposite the glass wafer is connected to at least one integrated circuit. Additionally, the side of the second glass package substrate opposite the glass wafer is connected to a component on the motherboard through pads on the motherboard.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 30, 2023
    Inventors: Deepak Vasant Kulkarni, Rahul Agarwal, Rajasekaran Swaminathan, Chintan Buch
  • Patent number: 11532563
    Abstract: Packages and packaging techniques are described in which a patterned carrier substrate can be used to create a reconstituted fanout substrate with a topography that can accommodate components of different thicknesses. In an embodiment, a wiring layer is formed directly on a multiple level topography of a molding compound layer including embedded components.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: December 20, 2022
    Assignee: Apple Inc.
    Inventors: Karthik Shanmugam, Jun Zhai, Rajasekaran Swaminathan
  • Publication number: 20220344247
    Abstract: Ultra-thin, hyper-density semiconductor packages and techniques of forming such packages are described. An exemplary semiconductor package is formed with one or more of: (i) metal pillars having an ultra-fine pitch (e.g., a pitch that is greater than or equal to 150 ?m, etc.); (ii) a large die-to-package ratio (e.g., a ratio that is equal to or greater than 0.85, etc.); and (iii) a thin pitch translation interposer. Another exemplary semiconductor package is formed using coreless substrate technology, die back metallization, and low temperature solder technology for ball grid array (BGA) metallurgy. Other embodiments are described.
    Type: Application
    Filed: July 11, 2022
    Publication date: October 27, 2022
    Inventors: Debendra MALLIK, Robert L. SANKMAN, Robert NICKERSON, Mitul MODI, Sanka GANESAN, Rajasekaran SWAMINATHAN, Omkar KARHADE, Shawna M. LIFF, Amruthavalli ALUR, Sri Chaitra J. CHAVALI
  • Patent number: 11430724
    Abstract: Ultra-thin, hyper-density semiconductor packages and techniques of forming such packages are described. An exemplary semiconductor package is formed with one or more of: (i) metal pillars having an ultra fine pitch (e.g., a pitch that is greater than or equal to 150 ?m, etc.); (ii) a large die to-package ratio (e.g., a ratio that is equal to or greater than 0.85, etc.); and (iii) a thin pitch translation interposer. Another exemplary semiconductor package is formed using coreless substrate technology, die back metallization, and low temperature solder technology for ball grid array (BGA) metallurgy. Other embodiments are described.
    Type: Grant
    Filed: December 30, 2017
    Date of Patent: August 30, 2022
    Assignee: Intel Corporation
    Inventors: Debendra Mallik, Robert L. Sankman, Robert Nickerson, Mitul Modi, Sanka Ganesan, Rajasekaran Swaminathan, Omkar Karhade, Shawna M. Liff, Amruthavalli Alur, Sri Chaitra J. Chavali
  • Patent number: 11398692
    Abstract: The connector portion of a flex connector may be integrated into a socket, by forming a complete cutout in the socket in which the connector is located, or by forming the socket with a portion having a reduced thickness relative to the rest of the socket, with the connector being positioned in this portion of reduced thickness between the socket and an MLB. Another flex connector may be formed vertically above the first flex connector, mounted to the top surface of the package and clamped in place by a heat sink on top of the stack. Providing both top and bottom flex connectors may multiply the number of available connections for a given footprint. A heatsink positioned on top of the stack may include a spring assembly on a bottom portion to engage specified portions of the stack with a predefined force to ensure correct loading.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 26, 2022
    Assignee: Apple Inc.
    Inventors: Mahesh S. Hardikar, David A. Secker, Rajasekaran Swaminathan, Ravindranath T. Kollipara, Robert R. Atkinson
  • Publication number: 20220148968
    Abstract: Various embodiments relate to a semiconductor package. The semiconductor package includes a first die. The first die includes a first bridge interconnect region. The semiconductor package further includes a second die. The second die includes a second bridge interconnect region. The semiconductor package includes a bridge die. The bridge die includes a first contact area to connect to the first bridge interconnect region and a second contact area to connect to the second bridge interconnect region. In the semiconductor package, the first bridge interconnect region is larger than the second bridge interconnect region. Additionally, each of the first bridge interconnect region and the second bridge interconnect region include a plurality of conductive bumps. An average pitch between adjacent bumps of the first bridge interconnect region is larger than an average pitch between adjacent bumps of the second bridge interconnect region.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Inventors: Andrew COLLINS, Bharat P. PENMECHA, Rajasekaran SWAMINATHAN, Ram VISWANATH
  • Patent number: 11296050
    Abstract: An electronic assembly, and a method for making the electronic assembly, includes a first electronic component, a second electronic component, and a plurality of interconnects. The plurality of interconnects electrically couple the first electronic component to the second electronic component. Each of the plurality of interconnects comprise one of a plurality of first magnetic components in physical alignment with an associated one of a plurality of second magnetic components, the plurality of second magnetic components being components of one of the second electronic component and the plurality of interconnects.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: April 5, 2022
    Assignee: Intel Corporation
    Inventor: Rajasekaran Swaminathan
  • Publication number: 20220102884
    Abstract: The connector portion of a flex connector may be integrated into a socket, by forming a complete cutout in the socket in which the connector is located, or by forming the socket with a portion having a reduced thickness relative to the rest of the socket, with the connector being positioned in this portion of reduced thickness between the socket and an MLB. Another flex connector may be formed vertically above the first flex connector, mounted to the top surface of the package and clamped in place by a heat sink on top of the stack. Providing both top and bottom flex connectors may multiply the number of available connections for a given footprint. A heatsink positioned on top of the stack may include a spring assembly on a bottom portion to engage specified portions of the stack with a predefined force to ensure correct loading.
    Type: Application
    Filed: September 25, 2020
    Publication date: March 31, 2022
    Inventors: MAHESH S. HARDIKAR, DAVID A. SECKER, RAJASEKARAN SWAMINATHAN, RAVINDRANATH T. KOLLIPARA, ROBERT R. ATKINSON
  • Publication number: 20220093522
    Abstract: Packages and packaging techniques are described in which a patterned carrier substrate can be used to create a reconstituted fanout substrate with a topography that can accommodate components of different thicknesses. In an embodiment, a wiring layer is formed directly on a multiple level topography of a molding compound layer including embedded components.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 24, 2022
    Inventors: Karthik Shanmugam, Jun Zhai, Rajasekaran Swaminathan
  • Patent number: 11270942
    Abstract: Various embodiments relate to a semiconductor package. The semiconductor package includes a first die. The first die includes a first bridge interconnect region. The semiconductor package further includes a second die. The second die includes a second bridge interconnect region. The semiconductor package includes a bridge die. The bridge die includes a first contact area to connect to the first bridge interconnect region and a second contact area to connect to the second bridge interconnect region. In the semiconductor package, the first bridge interconnect region is larger than the second bridge interconnect region. Additionally, each of the first bridge interconnect region and the second bridge interconnect region include a plurality of conductive bumps. An average pitch between adjacent bumps of the first bridge interconnect region is larger than an average pitch between adjacent bumps of the second bridge interconnect region.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: March 8, 2022
    Assignee: Intel Corporation
    Inventors: Andrew Collins, Bharat P. Penmecha, Rajasekaran Swaminathan, Ram Viswanath