Patents by Inventor Sunil Srinivasan

Sunil Srinivasan 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: 11941111
    Abstract: Indices of non-zero weights may be stored in an index register file included within each of a plurality of processor elements in a systolic array. Non-zero weights may be stored in a register file associated with the index register file. Input values (e.g., dense input values) corresponding to a single block in a data structure may be sent to the plurality of processor elements. Those of the input values corresponding to the indices of non-zero weights in the index register file may be selected for performing multiply-accumulate (“MAC”) operation based on sending the plurality of input values to one or more of the plurality of processor elements. The indices of the plurality of non-zero weight are stored in an index data stick. The values of the plurality of non-zero weights are stored in a value data stick.
    Type: Grant
    Filed: July 31, 2021
    Date of Patent: March 26, 2024
    Assignee: International Business Machines Corporation
    Inventors: Sanchari Sen, Swagath Venkataramani, Vijayalakshmi Srinivasan, Kailash Gopalakrishnan, Sunil K. Shukla
  • Publication number: 20230086917
    Abstract: A method for removing etchant byproduct from an etch reactor and discharging a substrate from an electrostatic chuck of the etch reactor is provided. One or more layers on a substrate electrostatically secured to an electrostatic chuck within a chamber of the etch reactor is etched using a first plasma, causing an etchant byproduct to be generated. A portion of the one or more layers are covered by a photoresist. After the etching is complete, a second plasma is provided into the chamber for a time period sufficient to trim the photoresist and remove a portion of the etchant byproduct. A second time period sufficient to electrostatically discharge the substrate using the second plasma is determined. Responsive to deactivating one or more chucking electrodes of the electrostatic chuck, the second plasma is provided into the chamber for the second time period and the substrate is removed from the chamber.
    Type: Application
    Filed: November 3, 2022
    Publication date: March 23, 2023
    Inventors: Yi Zhou, Seul Ki Ahn, Seung-Young Son, Li-Te Chang, Sunil Srinivasan, Rajinder Dhindsa
  • Publication number: 20230071505
    Abstract: The present disclosure generally relates to substrate processing methods, such as etching methods with noble gases at low temperatures. In an aspect, the method includes exposing a substrate, a first layer comprising a gas, and a fluorine-containing layer to energy to form a passivation layer while maintaining the substrate at conditions encompassing a triple point temperature of the gas, the substrate positioned in a processing region of a processing chamber. The method further includes etching the substrate with ions.
    Type: Application
    Filed: November 9, 2022
    Publication date: March 9, 2023
    Inventors: Alvaro GARCIA DE GORORDO, Zhonghua YAO, Sunil SRINIVASAN, Sang Wook PARK
  • Patent number: 11521849
    Abstract: Embodiments of the present disclosure provide methods and apparatus for forming a desired material layer on a substrate between, during, prior to or after a patterning process. In one embodiment, a method for forming a material layer on a substrate includes pulsing a first gas precursor onto a surface of a substrate, attaching a first element from the first gas precursor onto the surface of the substrate, maintaining a substrate temperature less than about 110 degrees Celsius, pulsing a second gas precursor onto the surface of the substrate, and attaching a second element from the second gas precursor to the first element on the surface of the substrate.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: December 6, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Sang Wook Park, Sunil Srinivasan, Rajinder Dhindsa, Jonathan Sungehul Kim, Lin Yu, Zhonghua Yao, Olivier Luere
  • Patent number: 11521838
    Abstract: A method for removing etchant byproduct from an etch reactor and discharging a substrate from an electrostatic chuck of the etch reactor is provided. A substrate may be electrostatically secured to an electrostatic chuck within a chamber of an etch reactor. A first plasma may be provided into the chamber to etch the substrate, causing an etchant byproduct to be generated. After the etching is complete, a second plasma may be provided into the chamber, wherein the second plasma is an oxygen containing plasma. The etchant byproduct may be removed and the first substrate may be discharged using the second plasma. The first substrate may be removed from the chamber and a second substrate may be inserted into the chamber without first performing an in-situ cleaning between the removal of the first substrate and the insertion of the second substrate.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 6, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Yi Zhou, Seul Ki Ahn, Seung-Young Son, Li-Te Chang, Sunil Srinivasan, Rajinder Dhindsa
  • Patent number: 11515166
    Abstract: A method for etching silicon at cryogenic temperatures is provided. The method includes forming an inert layer from condensation of a noble gas at cryogenic temperatures on exposed surfaces such as the sidewalls of a feature to passivate the sidewalls prior to the etching process. The method further includes flowing a fluorine-containing precursor gas into the chamber to form a fluorine-containing layer on the inert layer. The method further includes exposing the fluorine-containing layer and the inert layer to an energy source to form a passivation layer on the exposed portions of the substrate and exposing the substrate to ions to etch the substrate.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: November 29, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Alvaro Garcia De Gorordo, Zhonghua Yao, Sunil Srinivasan, Sang Wook Park
  • Publication number: 20220319904
    Abstract: Apparatuses including a height-adjustable edge ring, and methods for use thereof are described herein. In one example, a process kit for processing a substrate is provided. The process kit has a support ring comprising an upper surface having an inner edge disposed at a first height and an outward edge disposed at a second height less than the first height, the inner edge having a greater thickness than the outward edge. An edge ring is disposed on the support ring, an inner surface of the edge ring interfaced with the inner edge of the support ring. A cover ring is disposed outward of the edge ring, the edge ring independently moveable relative to the support ring and the cover ring. Push pins are disposed inward of the cover ring, the push pins operable to elevate the edge ring while constraining radial movement of the support ring.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Inventors: Michael R. RICE, Yogananda SARODE VISHWANATH, Sunil SRINIVASAN, Rajinder DHINDSA, Steven E. BABAYAN, Olivier LUERE, Denis M. KOOSAU, Imad YOUSIF
  • Patent number: 11393710
    Abstract: Apparatuses including a height-adjustable edge ring, and methods for use thereof are described herein. In one example, a substrate support assembly includes a height-adjustable edge ring, and the substrate support assembly is located within a process chamber. The substrate support assembly includes an electrostatic chuck, an edge ring positioned on a portion of the electrostatic chuck, and one or more actuators to adjust the height of the edge ring via one or more push pins. The height-adjustable edge ring can be used to compensate for erosion of the edge ring over time. In addition, the height-adjustable edge ring can be removed from the process chamber via a slit valve opening without venting and opening the process chamber. The height-adjustable edge ring can be tilted by the one or more actuators in order to improve azimuthal uniformity at the edge of the substrate.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 19, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Michael R. Rice, Yogananda Sarode Vishwanath, Sunil Srinivasan, Rajinder Dhindsa, Steven E. Babayan, Olivier Luere, Denis M. Koosau, Imad Yousif
  • Patent number: 11284500
    Abstract: Embodiments of this disclosure describe an electrode biasing scheme that enables maintaining a nearly constant sheath voltage and thus creating a mono-energetic IEDF at the surface of the substrate that consequently enables a precise control over the shape of IEDF and the profile of the features formed in the surface of the substrate.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: March 22, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Leonid Dorf, Olivier Luere, Rajinder Dhindsa, James Rogers, Sunil Srinivasan, Anurag Kumar Mishra
  • Publication number: 20210398815
    Abstract: A method for etching silicon at cryogenic temperatures is provided. The method includes forming an inert layer from condensation of a noble gas at cryogenic temperatures on exposed surfaces such as the sidewalls of a feature to passivate the sidewalls prior to the etching process. The method further includes flowing a fluorine-containing precursor gas into the chamber to form a fluorine-containing layer on the inert layer. The method further includes exposing the fluorine-containing layer and the inert layer to an energy source to form a passivation layer on the exposed portions of the substrate and exposing the substrate to ions to etch the substrate.
    Type: Application
    Filed: July 9, 2021
    Publication date: December 23, 2021
    Inventors: Alvaro GARCIA DE GORORDO, Zhonghua YAO, Sunil SRINIVASAN, Sang Wook PARK
  • Patent number: 11087989
    Abstract: A method for etching silicon at cryogenic temperatures is provided. The method includes forming an inert layer from condensation of a noble gas at cryogenic temperatures on exposed surfaces such as the sidewalls of a feature to passivate the sidewalls prior to the etching process. The method further includes flowing a fluorine-containing precursor gas into the chamber to form a fluorine-containing layer on the inert layer. The method further includes exposing the fluorine-containing layer and the inert layer to an energy source to form a passivation layer on the exposed portions of the substrate and exposing the substrate to ions to etch the substrate.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: August 10, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Alvaro Garcia De Gorordo, Zhonghua Yao, Sunil Srinivasan, Sang Wook Park
  • Patent number: 11049760
    Abstract: The implementations described herein generally relate to a process kit suitable for use in a semiconductor process chamber, which reduces edge effects and widens the processing window with a single edge ring as compared to conventional process kits. The process kit generally includes an edge ring disposed adjacent to and surrounding a perimeter of a semiconductor substrate in a plasma chamber. A dimension of a gap between the substrate and the edge ring is less than about 1000 ?m, and a height difference between the substrate and the edge ring is less than about (+/?) 300 ?m. The resistivity of the ring is less than about 50 Ohm-cm.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: June 29, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Olivier Joubert, Jason A. Kenney, Sunil Srinivasan, James Rogers, Rajinder Dhindsa, Vedapuram S. Achutharaman, Olivier Luere
  • Patent number: 10991556
    Abstract: Embodiments described herein generally related to a substrate processing apparatus. In one embodiment, a process kit for a substrate processing chamber disclosed herein. The process kit includes a ring having a first ring component and a second ring component, an adjustable tuning ring, and an actuating mechanism. The first ring component is interfaced with the second ring component such that the second ring component is movable relative to the first ring component forming a gap therebetween. The adjustable tuning ring is positioned beneath the ring and contacts a bottom surface of the second ring component. A top surface of the adjustable tuning ring contacts the second ring component. The actuating mechanism is interfaced with the bottom surface of the adjustable tuning ring. The actuating mechanism is configured to actuate the adjustable tuning ring such that the gap between the first ring component and the second ring component varies.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: April 27, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Olivier Luere, Leonid Dorf, Sunil Srinivasan, Rajinder Dhindsa, James Rogers, Denis M. Koosau
  • Publication number: 20200373149
    Abstract: Embodiments of the present disclosure provide methods and apparatus for forming a desired material layer on a substrate between, during, prior to or after a patterning process. In one embodiment, a method for forming a material layer on the substrate includes pulsing a first gas precursor comprising an organic silicon compound onto a surface of the substrate. The method also includes disposing a first element from the first gas precursor onto the surface of the substrate. The method further includes maintaining a substrate temperature less than about 110 degrees Celsius while disposing the first element. A second gas precursor is pulsed onto the surface of the substrate. Additionally, the method includes disposing a second element from the second gas precursor to the first element on the surface of the substrate.
    Type: Application
    Filed: March 26, 2020
    Publication date: November 26, 2020
    Inventors: Sang Wook PARK, Xiaorui CUI, Sunil SRINIVASAN, Rajinder DHINDSA, Zhonghua YAO, Lin YU, Olivier LUERE, Jonathan Sungehul KIM
  • Publication number: 20200352017
    Abstract: Embodiments of this disclosure describe an electrode biasing scheme that enables maintaining a nearly constant sheath voltage and thus creating a mono-energetic IEDF at the surface of the substrate that consequently enables a precise control over the shape of IEDF and the profile of the features formed in the surface of the substrate.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Leonid DORF, Olivier LUERE, Rajinder DHINDSA, James ROGERS, Sunil SRINIVASAN, Anurag Kumar MISHRA
  • Patent number: 10791617
    Abstract: Embodiments of this disclosure describe an electrode biasing scheme that enables maintaining a nearly constant sheath voltage and thus creating a mono-energetic IEDF at the surface of the substrate that consequently enables a precise control over the shape of IEDF and the profile of the features formed in the surface of the substrate.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: September 29, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Leonid Dorf, Olivier Luere, Rajinder Dhindsa, James Rogers, Sunil Srinivasan, Anurag Kumar Mishra
  • Publication number: 20200194242
    Abstract: A method for removing etchant byproduct from an etch reactor and discharging a substrate from an electrostatic chuck of the etch reactor is provided. A substrate may be electrostatically secured to an electrostatic chuck within a chamber of an etch reactor. A first plasma may be provided into the chamber to etch the substrate, causing an etchant byproduct to be generated. After the etching is complete, a second plasma may be provided into the chamber, wherein the second plasma is an oxygen containing plasma. The etchant byproduct may be removed and the first substrate may be discharged using the second plasma. The first substrate may be removed from the chamber and a second substrate may be inserted into the chamber without first performing an in-situ cleaning between the removal of the first substrate and the insertion of the second substrate.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 18, 2020
    Inventors: Yi Zhou, Seul Ki Ahn, SeungYoung Son, Li-Te Chang, Sunil Srinivasan, Rajinder Dhindsa
  • Publication number: 20200154556
    Abstract: Embodiments of this disclosure describe an electrode biasing scheme that enables maintaining a nearly constant sheath voltage and thus creating a mono-energetic IEDF at the surface of the substrate that consequently enables a precise control over the shape of IEDF and the profile of the features formed in the surface of the substrate.
    Type: Application
    Filed: January 9, 2020
    Publication date: May 14, 2020
    Inventors: Leonid DORF, Olivier LUERE, Rajinder DHINDSA, James ROGERS, Sunil SRINIVASAN, Anurag Kumar MISHRA
  • Publication number: 20200118798
    Abstract: Embodiments described herein generally related to a substrate processing apparatus. In one embodiment, a process kit for a substrate processing chamber disclosed herein. The process kit includes a ring having a first ring component and a second ring component, an adjustable tuning ring, and an actuating mechanism. The first ring component is interfaced with the second ring component such that the second ring component is movable relative to the first ring component forming a gap therebetween. The adjustable tuning ring is positioned beneath the ring and contacts a bottom surface of the second ring component. A top surface of the adjustable tuning ring contacts the second ring component. The actuating mechanism is interfaced with the bottom surface of the adjustable tuning ring. The actuating mechanism is configured to actuate the adjustable tuning ring such that the gap between the first ring component and the second ring component varies.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Inventors: Olivier LUERE, Leonid DORF, Sunil SRINIVASAN, Rajinder DHINDSA, James ROGERS, Denis M. KOOSAU
  • Patent number: 10553404
    Abstract: Embodiments described herein generally related to a substrate processing apparatus. In one embodiment, a process kit for a substrate processing chamber disclosed herein. The process kit includes a ring having a first ring component and a second ring component, an adjustable tuning ring, and an actuating mechanism. The first ring component is interfaced with the second ring component such that the second ring component is movable relative to the first ring component forming a gap therebetween. The adjustable tuning ring is positioned beneath the ring and contacts a bottom surface of the second ring component. A top surface of the adjustable tuning ring contacts the second ring component. The actuating mechanism is interfaced with the bottom surface of the adjustable tuning ring. The actuating mechanism is configured to actuate the adjustable tuning ring such that the gap between the first ring component and the second ring component varies.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: February 4, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Olivier Luere, Leonid Dorf, Sunil Srinivasan, Rajinder Dhindsa, James Rogers, Denis M. Koosau