Patents by Inventor Shreesh Narasimha

Shreesh Narasimha 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: 11101357
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: August 24, 2021
    Assignee: Tessera, Inc.
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 11056398
    Abstract: A method includes forming a gate cut opening by removing a sacrificial material from a portion of a dummy gate in a first dielectric over a substrate. The gate cut opening includes a lower portion in which the sacrificial material was located and an upper portion extending laterally over the first dielectric. Filling the gate cut opening with a second dielectric creates a gate cut isolation. Recessing the second dielectric creates a cap opening in the second dielectric; and filling the cap opening with a third dielectric creates a dielectric cap. The third dielectric is different than the second dielectric, e.g., oxide versus nitride, allowing forming of an interconnect in at least a portion of the third dielectric without the second, harder dielectric acting as an etch stop.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 6, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Daniel J. Jaeger, Naved A. Siddiqui, Shimpei Yamaguchi, Shreesh Narasimha
  • Publication number: 20210028067
    Abstract: A method includes forming a gate cut opening by removing a sacrificial material from a portion of a dummy gate in a first dielectric over a substrate. The gate cut opening includes a lower portion in which the sacrificial material was located and an upper portion extending laterally over the first dielectric. Filling the gate cut opening with a second dielectric creates a gate cut isolation. Recessing the second dielectric creates a cap opening in the second dielectric; and filling the cap opening with a third dielectric creates a dielectric cap. The third dielectric is different than the second dielectric, e.g., oxide versus nitride, allowing forming of an interconnect in at least a portion of the third dielectric without the second, harder dielectric acting as an etch stop.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 28, 2021
    Inventors: Daniel J. Jaeger, Naved A. Siddiqui, Shimpei Yamaguchi, Shreesh Narasimha
  • Publication number: 20200365702
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 10833160
    Abstract: Structures for a field-effect transistor and methods of forming a field-effect transistor. A sidewall spacer is arranged adjacent to a sidewall of a gate electrode, a source/drain region is arranged laterally adjacent to the sidewall spacer, and a contact is arranged over the source/drain region and laterally adjacent to the sidewall spacer. The contact is coupled with the source/drain region. A section of an interlayer dielectric layer is laterally arranged between the contact and the sidewall spacer.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: November 10, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Michael Aquilino, Daniel Jaeger, Naved Siddiqui, Jessica Dechene, Daniel J. Dechene, Shreesh Narasimha, Natalia Borjemscaia
  • Publication number: 20200335591
    Abstract: Structures for a field-effect transistor and methods of forming a field-effect transistor. A sidewall spacer is arranged adjacent to a sidewall of a gate electrode, a source/drain region is arranged laterally adjacent to the sidewall spacer, and a contact is arranged over the source/drain region and laterally adjacent to the sidewall spacer. The contact is coupled with the source/drain region. A section of an interlayer dielectric layer is laterally arranged between the contact and the sidewall spacer.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 22, 2020
    Inventors: Michael Aquilino, Daniel Jaeger, Naved Siddiqui, Jessica Dechene, Daniel J. Dechene, Shreesh Narasimha, Natalia Borjemscaia
  • Patent number: 10734492
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 4, 2020
    Assignee: Tessera, Inc.
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 10580686
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: March 3, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha
  • Publication number: 20200027779
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha
  • Publication number: 20190296120
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Application
    Filed: June 13, 2019
    Publication date: September 26, 2019
    Inventors: Anthony I. CHOU, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 10381452
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 13, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 10374048
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: August 6, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Patent number: 10367072
    Abstract: An asymmetric high-k dielectric for reduced gate induced drain leakage in high-k MOSFETs and methods of manufacture are disclosed. The method includes performing an implant process on a high-k dielectric sidewall of a gate structure. The method further includes performing an oxygen annealing process to grow an oxide region on a drain side of the gate structure, while inhibiting oxide growth on a source side of the gate structure adjacent to a source region.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 30, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony I. Chou, Arvind Kumar, Chung-Hsun Lin, Shreesh Narasimha, Claude Ortolland, Jonathan T. Shaw
  • Publication number: 20190181037
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha
  • Patent number: 10242906
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: March 26, 2019
    Assignee: International Business Machines Corporation
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha
  • Publication number: 20180277424
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha
  • Patent number: 10083878
    Abstract: A self-aligned active region block mask is used to pattern and define a plurality of semiconductor fins as well as attendant shallow trench isolation (STI) structures. The block mask, a portion of which comprises a patterned fin hard mask, permits decoupling of inner and outer fin etch processes, as well as independent optimization of inner fin and outer fin dielectric properties. The fin-forming method also forestalls the creation of isolated, free-standing fins, which decreases the likelihood of mechanical damage to the fins during processing.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: September 25, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Brian J. Greene, Shreesh Narasimha
  • Publication number: 20180261512
    Abstract: A fin cut process cuts semiconductor fins after forming sacrificial gate structures that overlie portions of the fins. Selected gate structures are removed to form openings and exposed portions of the fins within the openings are etched. An isolation dielectric layer is deposited into the openings and between end portions of the cut fins. The process enables a single sacrificial gate structure to define the spacing between two active regions on dissimilar electrical nets.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 13, 2018
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Brian J. GREENE, Shreesh NARASIMHA, Scott R. STIFFLER
  • Patent number: 10074571
    Abstract: A fin cut process cuts semiconductor fins after forming sacrificial gate structures that overlie portions of the fins. Selected gate structures are removed to form openings and exposed portions of the fins within the openings are etched. An isolation dielectric layer is deposited into the openings and between end portions of the cut fins. The process enables a single sacrificial gate structure to define the spacing between two active regions on dissimilar electrical nets.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: September 11, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Brian J. Greene, Shreesh Narasimha, Scott R. Stiffler
  • Patent number: 10032862
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) with integrated passive structures and methods of manufacturing the same is disclosed. The method includes forming a stacked structure in an active region and at least one shallow trench isolation (STI) structure adjacent to the stacked structure. The method further includes forming a semiconductor layer directly in contact with the at least one STI structure and the stacked structure. The method further includes patterning the semiconductor layer and the stacked structure to form an active device in the active region and a passive structure of the semiconductor layer directly on the at least one STI structure.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: July 24, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony I. Chou, Arvind Kumar, Renee T. Mo, Shreesh Narasimha