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).
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Patent number: 12672531Abstract: 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: GrantFiled: September 22, 2022Date of Patent: June 30, 2026Assignee: International Business Machines CorporationInventors: Tao Li, Liqiao Qin, Devika Sarkar Grant, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Kisik Choi, Ruilong Xie
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Patent number: 12557297Abstract: 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: GrantFiled: November 11, 2021Date of Patent: February 17, 2026Assignee: International Business Machines CorporationInventors: Michael Rizzolo, Devika Sarkar Grant, Son Nguyen
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Publication number: 20250391708Abstract: 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: ApplicationFiled: May 9, 2025Publication date: December 25, 2025Applicant: Applied Materials, Inc.Inventors: Bocheng Cao, Palash Gajjar, Xinghua Sun, Devika Sarkar Grant, Benjamin Cherian, Gene Lee, Balasubramanian Pranatharthiharan
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Patent number: 12494408Abstract: 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: GrantFiled: November 22, 2021Date of Patent: December 9, 2025Assignee: International Business Machines CorporationInventors: Fee Li Lie, Sagarika Mukesh, Devika Sarkar Grant, Hosadurga Shobha, Thamarai Selvi Devarajan, Kamal K. Sikka
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Publication number: 20250316491Abstract: 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: ApplicationFiled: April 7, 2025Publication date: October 9, 2025Inventors: Benjamin Jacob Cherian, Devika Sarkar Grant, Xiaoqun Zou, Eric Lee Lau, Jatinder Bir Singh Randhawa, Bocheng Cao, Palash Gajjar
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Patent number: 12438085Abstract: 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: GrantFiled: May 11, 2022Date of Patent: October 7, 2025Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sagarika Mukesh, Nikhil Jain, Devika Sarkar Grant, Ruilong Xie, Kisik Choi, Prabudhya Roy Chowdhury
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Patent number: 12417926Abstract: 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: GrantFiled: December 27, 2021Date of Patent: September 16, 2025Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sagarika Mukesh, Fee Li Lie, Hosadurga Shobha, Devika Sarkar Grant
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Patent number: 12394660Abstract: 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: GrantFiled: November 22, 2021Date of Patent: August 19, 2025Assignee: International Business Machines CorporationInventors: Devika Sarkar Grant, Sagarika Mukesh, Kisik Choi, Somnath Ghosh, Ruilong Xie
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Patent number: 12334398Abstract: 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: GrantFiled: August 23, 2021Date of Patent: June 17, 2025Assignee: International Business Machines CorporationInventors: Sagarika Mukesh, Devika Sarkar Grant, Fee Li Lie, Shravan Kumar Matham, Hosadurga Shobha, Gauri Karve
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Patent number: 12243913Abstract: 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: GrantFiled: February 23, 2022Date of Patent: March 4, 2025Assignee: International Business Machines CorporationInventors: Nikhil Jain, Sagarika Mukesh, Devika Sarkar Grant, Prabudhya Roy Chowdhury, Ruilong Xie, Kisik Choi
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Patent number: 12148699Abstract: 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: GrantFiled: June 13, 2022Date of Patent: November 19, 2024Assignee: International Business Machines CorporationInventors: Sagarika Mukesh, Devika Sarkar Grant, Fee Li Lie, Hosadurga Shobha, Thamarai selvi Devarajan, Aakrati Jain
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Patent number: 12046511Abstract: 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: GrantFiled: November 19, 2021Date of Patent: July 23, 2024Assignee: International Business Machines CorporationInventors: Devika Sarkar Grant, Somnath Ghosh
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Publication number: 20240105554Abstract: 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: ApplicationFiled: September 22, 2022Publication date: March 28, 2024Inventors: Tao Li, Liqiao Qin, Devika Sarkar Grant, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Kisik Choi, Ruilong Xie
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Publication number: 20230402378Abstract: 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: ApplicationFiled: June 13, 2022Publication date: December 14, 2023Inventors: Sagarika Mukesh, Devika Sarkar Grant, FEE LI LIE, Hosadurga Shobha, Thamarai selvi Devarajan, Aakrati Jain
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Publication number: 20230369220Abstract: 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: ApplicationFiled: May 11, 2022Publication date: November 16, 2023Inventors: Sagarika Mukesh, Nikhil Jain, Devika Sarkar Grant, Ruilong Xie, Kisik Choi, Prabudhya Roy Chowdhury
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Publication number: 20230369218Abstract: 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: ApplicationFiled: May 11, 2022Publication date: November 16, 2023Inventors: Tao Li, Devika Sarkar Grant, Liqiao Qin, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Ruilong Xie, Kisik Choi
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Publication number: 20230268389Abstract: 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: ApplicationFiled: February 23, 2022Publication date: August 24, 2023Inventors: Nikhil Jain, Sagarika Mukesh, Devika Sarkar Grant, Prabudhya Roy Chowdhury, Ruilong Xie, Kisik Choi
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Publication number: 20230207330Abstract: 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: ApplicationFiled: December 27, 2021Publication date: June 29, 2023Inventors: Sagarika Mukesh, Fee Li Li Lie, Hosadurga Shobha, Devika Sarkar Grant
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Publication number: 20230146034Abstract: 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: ApplicationFiled: November 11, 2021Publication date: May 11, 2023Inventors: Michael Rizzolo, Devika Sarkar Grant, SON NGUYEN
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Publication number: 20230055600Abstract: 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: ApplicationFiled: August 23, 2021Publication date: February 23, 2023Inventors: Sagarika Mukesh, Devika Sarkar Grant, FEE LI LIE, SHRAVAN KUMAR MATHAM, Hosadurga Shobha, Gauri Karve