Patents by Inventor Devika Sarkar Grant

Devika Sarkar Grant 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: 12672531
    Abstract: A semiconductor structure includes a source/drain region; a frontside source/drain contact disposed on the source/drain region, a via-to-backside power rail disposed on the frontside source/drain contact and on a portion of the source/drain region, and a backside power rail connected to the via-to-backside power rail.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: June 30, 2026
    Assignee: International Business Machines Corporation
    Inventors: Tao Li, Liqiao Qin, Devika Sarkar Grant, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Kisik Choi, Ruilong Xie
  • Patent number: 12557297
    Abstract: An approach providing a semiconductor structure that provides a self-leveling, flowable, dielectric material for a gap fill material between vertical structures in many emerging non-volatile memory devices that are being formed with vertical structures for increasing memory device density. The semiconductor structure provides a flat dielectric surface between a plurality of contacts in a back end of the line metal layer in both the memory region and in the logic region of the semiconductor structure. The semiconductor structure includes a first portion of the plurality of contacts that each connect to a pillar-based memory device in an array of pillar-based memory devices. The first portion of the contacts that each connect to a pillar-based memory device in the array of memory devices reside in a conventional interlayer dielectric material under the self-leveling dielectric material. The flowable, self-leveling material provides a flat dielectric surface during contact formation.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: February 17, 2026
    Assignee: International Business Machines Corporation
    Inventors: Michael Rizzolo, Devika Sarkar Grant, Son Nguyen
  • Publication number: 20250391708
    Abstract: Approaches for reducing substrate thickness variation of a substrate are disclosed. One method includes receiving a first etching amount for a plurality of zones of a first substrate when a first thermal application is being provided to the first substrate, determining a mean target thickness of a second substrate, and determining a second etching amount for each of a plurality of zones of the second substrate when a secondary thermal application and the first thermal application are being provided. The method may further include determining an etch correction amount for each zone of the second substrate, and generating a temperature map based on the etch correction amount for each zone of the second substrate, wherein the temperature map indicates a temperature change for each zone of the plurality of zones. The method may further include generating an etching recipe based on the temperature map for etching the second substrate.
    Type: Application
    Filed: May 9, 2025
    Publication date: December 25, 2025
    Applicant: Applied Materials, Inc.
    Inventors: Bocheng Cao, Palash Gajjar, Xinghua Sun, Devika Sarkar Grant, Benjamin Cherian, Gene Lee, Balasubramanian Pranatharthiharan
  • Patent number: 12494408
    Abstract: A microcooler device and formation thereof. The microcooler device includes: a first set of fins having a first fin width; a second set of fins having a second fin width, wherein the first set of fins alternate between the second set of fins; and a set of channels located between the first set of fins and the second set of fins.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: December 9, 2025
    Assignee: International Business Machines Corporation
    Inventors: Fee Li Lie, Sagarika Mukesh, Devika Sarkar Grant, Hosadurga Shobha, Thamarai Selvi Devarajan, Kamal K. Sikka
  • Publication number: 20250316491
    Abstract: A method includes identifying a substrate thickness map of a substrate thinned via one or more chemical mechanical planarization (CMP) operations. The method further includes causing, based on the substrate thickness map, additional thinning of the substrate via etching of the substrate.
    Type: Application
    Filed: April 7, 2025
    Publication date: October 9, 2025
    Inventors: Benjamin Jacob Cherian, Devika Sarkar Grant, Xiaoqun Zou, Eric Lee Lau, Jatinder Bir Singh Randhawa, Bocheng Cao, Palash Gajjar
  • Patent number: 12438085
    Abstract: According to the embodiment of the present invention, a semiconductor device includes a first source/drain and a second source/drain. A first source/drain contact includes a first portion and a second portion. The first portion of the first source/drain contact is located directly atop the first source/drain. The second portion of the first source/drain contact extends vertically past the first source/drain. The first source/drain is in direct contact with three different sides of a first section of the second portion of the first source/drain contact.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: October 7, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sagarika Mukesh, Nikhil Jain, Devika Sarkar Grant, Ruilong Xie, Kisik Choi, Prabudhya Roy Chowdhury
  • Patent number: 12417926
    Abstract: One or more systems, devices and/or methods provided herein relate to a circuit device having a modular or selectively designed interconnect structure with a plurality of conformal features. In the semiconductor realm, such achievements can allow for fabrication of a device with sub 18 nanometer (nm) or lesser pitch between adjacent and/or parallel lines of the interconnect structure. A device can comprise a semiconductor device having an interconnect structure having a first set of parallel lines and a second set of parallel lines, where the lines of the first set can be arranged in a transverse direction to the lines of the second set. The lines of the first set can be disposed orthogonally to the lines of the second set. The first second sets of lines can comprise first and second rounded jogs that are conformal to one another and which connect the first set of lines to the second set of lines.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: September 16, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sagarika Mukesh, Fee Li Lie, Hosadurga Shobha, Devika Sarkar Grant
  • Patent number: 12394660
    Abstract: Embodiments herein include semiconductor structures with a first source/drain (S/D) connected to a first field-effect transistor (FET) region, a second S/D connected to a second FET region, and a buried power rail (BPR) region. The BPR region may include a BPR, a first dielectric liner lining a first lateral side of the BPR region, and a second dielectric liner lining a second lateral side. The first dielectric liner isolates the BPR from the first FET region and the first S/D, and the second dielectric liner isolates the BPR from the second FET region. Embodiments may also include a contact electrically connecting the second S/D and the BPR through a second lateral side of the BPR region. The liners enable the BPR to be formed after the formation of gates and the S/Ds, so that the BPR does not cause problems during annealing processes of the gates and the S/Ds.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: August 19, 2025
    Assignee: International Business Machines Corporation
    Inventors: Devika Sarkar Grant, Sagarika Mukesh, Kisik Choi, Somnath Ghosh, Ruilong Xie
  • Patent number: 12334398
    Abstract: A back-end-of-line (BEOL) component includes a substrate and a first layer of dielectric material arranged on the substrate. The first layer of dielectric material includes openings. The BEOL component further includes a first layer of metal material arranged in the openings. The BEOL component further includes an etch stop layer arranged on top of the first layer of dielectric material. The BEOL component further includes a second layer of metal material in direct contact with the first layer of metal material. The second layer of metal material includes at least one projection extending above the etch stop layer. The BEOL component further includes a second layer of dielectric material arranged on top of the etch stop layer and surrounding the at least one projection.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: June 17, 2025
    Assignee: International Business Machines Corporation
    Inventors: Sagarika Mukesh, Devika Sarkar Grant, Fee Li Lie, Shravan Kumar Matham, Hosadurga Shobha, Gauri Karve
  • Patent number: 12243913
    Abstract: Provided is a semiconductor device. The semiconductor device comprises a transistor comprising a plurality of source/drain epitaxies. The semiconductor device further comprises at least one backside power rail under the transistor. The semiconductor device further comprises a backside inter-layer dielectric (ILD) located between the plurality of source/drain epitaxies and the at least one power rail. The semiconductor device further comprises a first backside contact connecting a first source/drain epitaxy to the at least one backside power rail. The semiconductor device further comprises one or more contact placeholders formed under the other source/drain epitaxies.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 4, 2025
    Assignee: International Business Machines Corporation
    Inventors: Nikhil Jain, Sagarika Mukesh, Devika Sarkar Grant, Prabudhya Roy Chowdhury, Ruilong Xie, Kisik Choi
  • Patent number: 12148699
    Abstract: A semiconductor component includes an area of dielectric material extending below an uppermost surface of a substrate. The semiconductor component further includes a trench formed so as to extend from above the uppermost surface of the substrate into the area of dielectric material. The semiconductor component further includes a non-metal liner coating interior surfaces of the trench. The semiconductor component further includes a metal liner coating interior surfaces of the non-metal liner. The semiconductor component further includes a power rail formed in the trench in direct contact with at least one of the metal liner or the non-metal liner such that the power rail extends into the area of dielectric material and above the uppermost surface of the substrate.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: November 19, 2024
    Assignee: International Business Machines Corporation
    Inventors: Sagarika Mukesh, Devika Sarkar Grant, Fee Li Lie, Hosadurga Shobha, Thamarai selvi Devarajan, Aakrati Jain
  • Patent number: 12046511
    Abstract: Structures in semiconductor devices, and methods for forming the structures, are described. In one embodiment, a hard mask layer of a deposition stack can be etched to pattern a hard mask. An interconnect layer of the deposition stack can be etched using the hard mask to pattern a plurality of metal lines. The hard mask can be removed. A liner layer of the deposition stack can be etched to remove a portion of the liner layer deposited directly on a dielectric layer of the deposition stack. In response to etching the liner layer, a remaining portion of the liner layer can be deposited between the metal lines and the dielectric layer.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: July 23, 2024
    Assignee: International Business Machines Corporation
    Inventors: Devika Sarkar Grant, Somnath Ghosh
  • Publication number: 20240105554
    Abstract: A semiconductor structure includes a source/drain region; a frontside source/drain contact disposed on the source/drain region, a via-to-backside power rail disposed on the frontside source/drain contact and on a portion of the source/drain region, and a backside power rail connected to the via-to-backside power rail.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Inventors: Tao Li, Liqiao Qin, Devika Sarkar Grant, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Kisik Choi, Ruilong Xie
  • Publication number: 20230402378
    Abstract: A semiconductor component includes an area of dielectric material extending below an uppermost surface of a substrate. The semiconductor component further includes a trench formed so as to extend from above the uppermost surface of the substrate into the area of dielectric material. The semiconductor component further includes a non-metal liner coating interior surfaces of the trench. The semiconductor component further includes a metal liner coating interior surfaces of the non-metal liner. The semiconductor component further includes a power rail formed in the trench in direct contact with at least one of the metal liner or the non-metal liner such that the power rail extends into the area of dielectric material and above the uppermost surface of the substrate.
    Type: Application
    Filed: June 13, 2022
    Publication date: December 14, 2023
    Inventors: Sagarika Mukesh, Devika Sarkar Grant, FEE LI LIE, Hosadurga Shobha, Thamarai selvi Devarajan, Aakrati Jain
  • Publication number: 20230369220
    Abstract: According to the embodiment of the present invention, a semiconductor device includes a first source/drain and a second source/drain. A first source/drain contact includes a first portion and a second portion. The first portion of the first source/drain contact is located directly atop the first source/drain. The second portion of the first source/drain contact extends vertically past the first source/drain. The first source/drain is in direct contact with three different sides of a first section of the second portion of the first source/drain contact.
    Type: Application
    Filed: May 11, 2022
    Publication date: November 16, 2023
    Inventors: Sagarika Mukesh, Nikhil Jain, Devika Sarkar Grant, Ruilong Xie, Kisik Choi, Prabudhya Roy Chowdhury
  • Publication number: 20230369218
    Abstract: Embodiments disclosed herein include a semiconductor structure. The semiconductor structure may include a first top transistor comprising a first source/drain (S/D) region and a first bottom transistor with a second S/D region. The first bottom transistor may be stacked directly below the first transistor. The semiconductor structure may also include a backside power delivery network (BSPDN) below the bottom transistor, a back-end-of-line (BEOL) metal level above the top transistor, and a first interlevel via electrically connecting a top of the first S/D region to the BSPDN.
    Type: Application
    Filed: May 11, 2022
    Publication date: November 16, 2023
    Inventors: Tao Li, Devika Sarkar Grant, Liqiao Qin, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Ruilong Xie, Kisik Choi
  • Publication number: 20230268389
    Abstract: Provided is a semiconductor device. The semiconductor device comprises a transistor comprising a plurality of source/drain epitaxies. The semiconductor device further comprises at least one backside power rail under the transistor. The semiconductor device further comprises a backside inter-layer dielectric (ILD) located between the plurality of source/drain epitaxies and the at least one power rail. The semiconductor device further comprises a first backside contact connecting a first source/drain epitaxy to the at least one backside power rail. The semiconductor device further comprises one or more contact placeholders formed under the other source/drain epitaxies.
    Type: Application
    Filed: February 23, 2022
    Publication date: August 24, 2023
    Inventors: Nikhil Jain, Sagarika Mukesh, Devika Sarkar Grant, Prabudhya Roy Chowdhury, Ruilong Xie, Kisik Choi
  • Publication number: 20230207330
    Abstract: One or more systems, devices and/or methods provided herein relate to a circuit device having a modular or selectively designed interconnect structure with a plurality of conformal features. In the semiconductor realm, such achievements can allow for fabrication of a device with sub 18 nanometer (nm) or lesser pitch between adjacent and/or parallel lines of the interconnect structure. A device can comprise a semiconductor device having an interconnect structure having a first set of parallel lines and a second set of parallel lines, where the lines of the first set can be arranged in a transverse direction to the lines of the second set. The lines of the first set can be disposed orthogonally to the lines of the second set. The first second sets of lines can comprise first and second rounded jogs that are conformal to one another and which connect the first set of lines to the second set of lines.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 29, 2023
    Inventors: Sagarika Mukesh, Fee Li Li Lie, Hosadurga Shobha, Devika Sarkar Grant
  • Publication number: 20230146034
    Abstract: An approach providing a semiconductor structure that provides a self-leveling, flowable, dielectric material for a gap fill material between vertical structures in many emerging non-volatile memory devices that are being formed with vertical structures for increasing memory device density. The semiconductor structure provides a flat dielectric surface between a plurality of contacts in a back end of the line metal layer in both the memory region and in the logic region of the semiconductor structure. The semiconductor structure includes a first portion of the plurality of contacts that each connect to a pillar-based memory device in an array of pillar-based memory devices. The first portion of the contacts that each connect to a pillar-based memory device in the array of memory devices reside in a conventional interlayer dielectric material under the self-leveling dielectric material. The flowable, self-leveling material provides a flat dielectric surface during contact formation.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 11, 2023
    Inventors: Michael Rizzolo, Devika Sarkar Grant, SON NGUYEN
  • Publication number: 20230055600
    Abstract: A back-end-of-line (BEOL) component includes a substrate and a first layer of dielectric material arranged on the substrate. The first layer of dielectric material includes openings. The BEOL component further includes a first layer of metal material arranged in the openings. The BEOL component further includes an etch stop layer arranged on top of the first layer of dielectric material. The BEOL component further includes a second layer of metal material in direct contact with the first layer of metal material. The second layer of metal material includes at least one projection extending above the etch stop layer. The BEOL component further includes a second layer of dielectric material arranged on top of the etch stop layer and surrounding the at least one projection.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 23, 2023
    Inventors: Sagarika Mukesh, Devika Sarkar Grant, FEE LI LIE, SHRAVAN KUMAR MATHAM, Hosadurga Shobha, Gauri Karve