Patents by Inventor Albert M. Chu

Albert M. Chu 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: 20240006313
    Abstract: Provided is a semiconductor device. The semiconductor device comprises a plurality of logic devices. The logic devices have frontside wiring. The semiconductor device further comprises a backside power delivery network (BSPDN). The semiconductor device further comprises a connection between the BSPDN and the bottom of a source/drain epitaxy of a logic device. The connection is self-aligned on at least two sides.
    Type: Application
    Filed: June 29, 2022
    Publication date: January 4, 2024
    Inventors: Brent A. Anderson, Ruilong Xie, Junli Wang, Albert M. Chu
  • Publication number: 20230420303
    Abstract: A semiconductor structure including a reliable power rail in stacked field effect transistor technology with unequal device footprints is provided that mitigates, and in some cases even eliminates, shorting risks that are typically associated using long bars in advanced logic applications.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 28, 2023
    Inventors: Albert M. Young, Albert M. Chu, Junli Wang
  • Publication number: 20230420359
    Abstract: A semiconductor device is provided. The semiconductor device includes a field effect transistor (FET) including first and second source/drain (S/D) epitaxial regions. The semiconductor device also includes a gate cut region at cell boundaries between the first and second S/D epitaxial regions, a dielectric liner and a dielectric core formed in the gate cut region, and a backside power rail (BPR) and a backside power distribution network (BSPDN). The semiconductor device also includes a power via passing through the dielectric core and connecting to the BPR and BSPDN, first metal contacts formed in contact with the first and second S/D epitaxial regions, and a via to backside power rail (VBPR) contact. The dielectric liner separates the power via from the first S/D epitaxial region.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 28, 2023
    Inventors: Ruilong Xie, Junli Wang, Kisik Choi, Julien Frougier, Reinaldo Vega, Lawrence A. Clevenger, Albert M. Chu, Brent A. Anderson
  • Publication number: 20230420502
    Abstract: A field effect transistor (“FET”) stack, including a lower FET, and an upper FET, a first contact to a lower source drain of the lower FET, a first silicide between the first contact and the lower source drain, the first contact is adjacent to a vertical side surface of the lower source drain, a first overlap region between the first silicide and the first contact is less than a second overlap region between the first silicide and the first source drain. The first contact has a reverse tapper metal stud profile. Forming a first contact to a lower source drain of a lower FET of an FET stack, forming a first silicide between the first contact and the lower source drain, the first contact is adjacent to a vertical side surface of the lower source drain.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 28, 2023
    Inventors: Heng Wu, Junli Wang, Ruilong Xie, Albert M. Young, Albert M. Chu, Brent A. Anderson, Ravikumar Ramachandran
  • Publication number: 20230420371
    Abstract: Embodiments are disclosed for a complementary metal oxide semiconductor (CMOS) device. The CMOS device includes a hybrid cross-couple contact. The hybrid cross-couple contact includes a frontside contact to a gate of the CMOS device. The frontside contact is disposed on a frontside of the CMOS device. The hybrid cross-couple contact includes a source contact to a source of the CMOS device. The source contact is disposed on a backside of the CMOS device. The hybrid cross-couple contact includes a drain contact to a drain of the CMOS device. The drain contact is disposed on a backside of the CMOS device.
    Type: Application
    Filed: June 27, 2022
    Publication date: December 28, 2023
    Inventors: Carl Radens, Ruilong Xie, Albert M. Chu, Brent A. Anderson
  • Publication number: 20230420296
    Abstract: Embodiments of the invention include providing interconnects with two-dimensional free zero line end enclosure. A first metal line is formed. A second metal line is connected by a via to the first metal line, the first metal line having a first end with a zero line extension in relation to the via in a first dimension, the second metal line having another first end with a zero line extension in relation to the via in a second dimension perpendicular to the first dimension.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 28, 2023
    Inventors: Ruilong Xie, Albert M. Chu, Nicholas Anthony Lanzillo, Lawrence A. Clevenger, Huai Huang
  • Publication number: 20230411386
    Abstract: A microelectronic structure including a plurality of lower transistors and a plurality of upper transistors, where channels of the upper transistors are staggered from channels of the lower transistors. A lower dielectric pillar located beneath an upper transistor, where the dielectric pillar separates bottom transistors.
    Type: Application
    Filed: June 20, 2022
    Publication date: December 21, 2023
    Inventors: Ruilong Xie, Albert M. Chu, Junli Wang, Brent A. Anderson, Anthony I. Chou, Dechao Guo
  • Publication number: 20230411358
    Abstract: A microelectronic structure including a plurality of lower transistors and a plurality of upper transistor, where each of the plurality of lower transistors and the plurality of upper transistors includes a plurality of channel. Where an upper center vertical axis of each of the plurality of upper transistors is staggered from a lower center vertical axis of each of the lower transistors. A lower gate cut is located between each of the plurality of lower transistors. A first upper gate cut located adjacent to a first upper transistor of the plurality of upper transistors, where the first upper gate cut is in direct contact with a plurality of first channels of the first upper transistor.
    Type: Application
    Filed: June 20, 2022
    Publication date: December 21, 2023
    Inventors: Ruilong Xie, Albert M. Chu, Albert M. Young, Brent A. Anderson, Junli Wang, Ravikumar Ramachandran
  • Publication number: 20230411394
    Abstract: The semiconductor device includes a first cell row, a first power rail and a second power rail. The first cell row includes a first plurality of cells. The first power rail extends from a first side of the first cell row. The first power rail connects to a first group of the first plurality of cells. The second power rail extends form a second side of the first cell row. The second power rail connects to a second group of the first plurality of cells.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 21, 2023
    Inventors: Albert M. Chu, Vidhi Zalani, Junli Wang
  • Publication number: 20230402519
    Abstract: A semiconductor device is provided. The semiconductor device includes a bottom field effect transistor (FET) including a bottom source-drain epitaxial layer formed on sides of the bottom FET; a top FET stacked over the bottom FET; a back-end-of-line (BEOL) layer formed on the top FET; a bottom gate contact formed in contact with the bottom FET and having an extending portion of the bottom gate contact that extends laterally over the bottom source-drain epitaxial layer; and a top gate contact formed in contact with the extending portion of the bottom gate contact and electrically connecting the bottom gate contact to the BEOL layer.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 14, 2023
    Inventors: Brent A. Anderson, Ruilong Xie, Albert M. Young, Albert M. Chu
  • Publication number: 20230360971
    Abstract: Embodiments of present invention provide a transistor structure. The transistor structure includes a first and a second transistor in a first transistor layer; a first and a second transistor in a second transistor layer, respectively, above the first and the second transistor in the first transistor layer; a metal routing layer between the first transistor layer and the second transistor layer; a first local interconnect connecting the first transistor of the first transistor layer to the metal routing layer; and a second local interconnect connecting the metal routing layer to the second transistor of the second transistor layer. A method of manufacturing the transistor structure is also provided.
    Type: Application
    Filed: May 9, 2022
    Publication date: November 9, 2023
    Inventors: Heng Wu, Ruilong Xie, Albert M. Chu, Albert M. Young, Junli Wang, Brent A. Anderson
  • Publication number: 20230345691
    Abstract: Embodiments of present invention provide a SRAM memory. The SRAM memory includes a frontside and a backside; a first pull-up (PU) transistor stacked over a first pull-down (PD) transistor; a second PU transistor stacked over a second PD transistor; a frontside cross-couple at the frontside, above the first and second PU transistors, that connects a first source/drain (S/D) region of the first PU transistor with a gate of the second PU transistor; and a backside cross-couple, at the backside underneath the first and second PD transistors, that connects a first S/D region of the second PD transistor with a gate of the first PD transistor. A method of manufacturing the SRAM memory is also provided.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 26, 2023
    Inventors: Ruilong Xie, Albert M Chu, Carl Radens, Kisik Choi
  • Publication number: 20230343821
    Abstract: A semiconductor device including a first pair of stacked transistors comprising a first upper transistor and a first lower transistor, a third transistor disposed adjacent to the first lower transistor, the third transistor comprising a gate portion extending from the third transistor gate toward the first pair of stacked transistors, a cross-connection disposed in contact with the gate portion and extending upward, and a gate contact disposed in contact with the cross-connection and a top surface of the first upper transistor.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 26, 2023
    Inventors: Ruilong Xie, Heng Wu, Albert M. Young, Albert M Chu, Junli Wang, Brent A Anderson
  • Publication number: 20230335585
    Abstract: A semiconductor device including a first pair of stacked transistors having a first upper transistor and a first lower transistor, a second pair of stacked transistors comprising a second upper transistor and a second lower transistor, and a first cross-connection between the first upper transistor and the second lower transistor.
    Type: Application
    Filed: April 17, 2022
    Publication date: October 19, 2023
    Inventors: Ruilong Xie, Albert M. Chu, Albert M. Young, Anthony I. Chou, Junli Wang, Brent A. Anderson
  • Publication number: 20230326854
    Abstract: Embodiments of present invention provide a semiconductor chip. The semiconductor chip includes a device layer having a first and a second circuit region; a frontside distribution network (FSDN) above the device layer and powering the first circuit region; and a backside distribution network (BSDN) below the device layer and powering the second circuit region, wherein the BSDN is electrically connected to the FSDN through the device layer and the FSDN is electrically connected to the first circuit region through one or more frontside metal layers, and wherein the BSDN is electrically connected to transistors of the second circuit region through the device layer.
    Type: Application
    Filed: April 8, 2022
    Publication date: October 12, 2023
    Inventors: Albert M. Chu, Brent A. Anderson, Junli Wang, John W. Golz, Nicholas Anthony Lanzillo, Lawrence A. Clevenger
  • Publication number: 20230320055
    Abstract: Embodiments disclosed herein include a semiconductor structure. The semiconductor structure may include a static random access memory (SRAM) cell. The SRAM cell may include a first section of the SRAM cell with a first pull-up transistor, first pull-down transistor, and first pass-gate transistor. The SRAM cell may include a second section of the SRAM cell with a second pull-up transistor, second pull-down transistor, and second pass-gate transistor. The first section of the SRAM cell and the second section of the SRAM cell may be arranged in a non-rectangular cell layout with the first pass-gate located at a first end of the non-rectangular cell layout and the second pass-gate at a second end of the non-rectangular cell layout opposite the first end.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: Brent A Anderson, Albert M Chu, Junli Wang, Hemanth Jagannathan
  • Publication number: 20230317611
    Abstract: Embodiments are disclosed for a system. The system includes multiple tracks. Further, one track includes a power rail for a first voltage. The system also includes a first via, disposed beneath, and in electrical contact with, the power rail. The system additionally includes a first contact, beneath, and in electrical contact with, the first via. The system further includes a first field effect transistor (FET), beneath, and in electrical isolation with, the first contact. Additionally, the system includes a second FET, beneath, and in electrical contact with, the first FET. Further, the system includes a second contact, beneath, and in electrical contact with, the second FET. Also, the system includes a second via, beneath, and in electrical contact with, the second contact. The system additionally includes a buried power rail (BPR), beneath, and in electrical contact with, the second via, wherein the BPR comprises a second voltage.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: Albert M Chu, Junli Wang, Albert M. Young, Dechao Guo
  • Publication number: 20230282722
    Abstract: A semiconductor device including a first nanodevice is located on a substrate, where the first nanodevice includes at least one channel. A first source/drain connected to the first nanodevice. A second nanodevice located on the substrate, where the second nanodevice includes at least one channel and a second source/drain connected to the second nanodevice. A first contact located above the first source/drain. A second contact located above the second source/drain. A contact cap located on top of the first contact and the second contact, where the contact cap has a first leg that extends downwards between the first contact and the second contact. The first leg of the contact cap is in contact with a first sidewall of the first contact, and a first sidewall of the second contact.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 7, 2023
    Inventors: Julien Frougier, Sagarika Mukesh, Albert M Chu, Ruilong Xie, Andrew M. Greene, Eric Miller, Junli Wang, Veeraraghavan S. Basker, Prateek Hundekar, Tushar Gupta, Su Chen Fan
  • Patent number: 11031296
    Abstract: A method for forming a semiconductor device includes flipping a vertical transistor including a bottom side having at least one connection to at least one bottom side metallization structure, and, after flipping the vertical transistor, forming at least one top side metallization structure having at least one connection to a top side of the vertical transistor.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: June 8, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brent A. Anderson, Albert M. Chu
  • Patent number: 10755017
    Abstract: A computer-implemented method of cell placement is provided. The method includes representing a non-rectangular cell to be placed into a cell row and searching the cell row to identify existing objects that are representative of cells in the cell row that are disposable to share space with the non-rectangular cell. The method further includes determining whether a representation of the non-rectangular cell is fittable into a modified mapping of the existing objects in the cell row and, in an event the representation is fittable into the modified mapping, overlapping the representation over one or more of the portions of the existing objects.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: August 25, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brent A. Anderson, Laura R. Darden, Albert M. Chu, Alexander J. Suess