Patents by Inventor KIRANKUMAR NEELASANDRA SAVANDAIAH

KIRANKUMAR NEELASANDRA SAVANDAIAH 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: 11961723
    Abstract: Embodiments of a process kit are provided herein. In some embodiments, a process kit includes a deposition ring configured to be disposed on a substrate support, the deposition ring including an annular band configured to rest on a lower ledge of the substrate support, the annular band having an upper surface and a lower surface, the lower surface including a step between a radially inner portion and a radially outer portion; an inner lip extending upwards from the upper surface of the annular band and adjacent an inner surface of the annular band, wherein a depth between an upper surface of the annular band and a horizontal portion of the upper surface of the inner lip is between about 6.0 mm and about 12.0 mm; a channel disposed radially outward of and beneath the annular band; and an outer lip extending upwardly and disposed radially outward of the channel.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 16, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: David Gunther, Cheng-Hsiung Tsai, Kirankumar Neelasandra Savandaiah
  • Patent number: 11955355
    Abstract: A method and apparatus for substrate processing and a cluster tool including a transfer chamber assembly and a plurality of processing assemblies. Processing chamber volumes are sealed from the transfer chamber volume using a support chuck on which a substrate is disposed. A seal ring assembly is coupled to the support chuck. The seal ring assembly includes an inner assembly, an assembly bellows circumscribing the inner assembly, and a bellows disposed between the inner and outer platform. An inner ring is disposed between inner assembly of the seal ring assembly and the bottom surface of the support chuck. An outer ring disposed between the seal ring assembly and the lower sealing surface of the process chamber wall. The support chuck is raised to form an isolation seal between the processing chamber volume and the transfer chamber volume using the bellows, the inner ring, and the outer ring.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: April 9, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Kirankumar Neelasandra Savandaiah, Nitin Bharadwaj Satyavolu, Srinivasa Rao Yedla, Bhaskar Prasad, Thomas Brezoczky
  • Patent number: 11935732
    Abstract: A process kit comprises a shield and ring assembly for positioning about a substrate support in a processing chamber to reduce deposition of process deposits on internal chamber components and an overhang edge of the substrate. The shield comprises a cylindrical band having a top wall configured to surround a sputtering target and a sloped portion of a bottom wall having a substantially straight profile with gas conductance holes configured to surround the substrate support. The ring assembly comprises a cover ring having a bulb-shaped protuberance about the periphery of the ring. The bulb-shaped protuberance of the cover ring is able to block a line-of-sight between the gas conductance holes on the shield and an entrance to a chamber body cavity in the processing chamber.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: March 19, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Adolph M. Allen, Kirankumar Neelasandra Savandaiah, Randal D. Schmieding, Vanessa Faune
  • Publication number: 20240068086
    Abstract: Target assemblies for PVD chambers are provided herein. In some embodiments, a target assembly for a PVD chamber includes: a backing plate; and a target coupled to the backing plate and having a substrate facing surface opposite the backing plate, wherein a peripheral portion of the target includes an angled surface extending radially outward and toward the backing plate, wherein an annular portion of the angled surface has a surface roughness greater than a surface roughness of a remainder of the substrate facing surface of the target.
    Type: Application
    Filed: December 2, 2022
    Publication date: February 29, 2024
    Inventors: Sundarapandian Ramalinga Vijayalakshmi REDDY, Kirankumar Neelasandra SAVANDAIAH, Junqi WEI, Bridger Earl HOERNER, Kelvin Tai Ming BOH, Madan Kumar SHIMOGA MYLARAPPA
  • Patent number: 11915918
    Abstract: A physical vapor deposition processing chamber is described. The processing chamber includes a target backing plate in a top portion of the processing chamber, a substrate support in a bottom portion of the processing chamber, a deposition ring positioned at an outer periphery of the substrate support and a shield. The substrate support has a support surface spaced a distance from the target backing plate to form a process cavity. The shield forms an outer bound of the process cavity. In-chamber cleaning methods are also described. In an embodiment, the method includes closing a bottom gas flow path of a processing chamber to a process cavity, flowing an inert gas from the bottom gas flow path, flowing a reactant into the process cavity through an opening in the shield, and evacuating the reaction gas from the process cavity.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: February 27, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Jothilingam Ramalingam, Yong Cao, Ilya Lavitsky, Keith A. Miller, Tza-Jing Gung, Xianmin Tang, Shane Lavan, Randy D. Schmieding, John C. Forster, Kirankumar Neelasandra Savandaiah
  • Patent number: 11898236
    Abstract: Methods and apparatus for processing a substrate are provided herein. For example, a processing chamber for processing a substrate comprises a sputtering target, a chamber wall at least partially defining an inner volume within the processing chamber and connected to ground, a power source comprising an RF power source, a process kit surrounding the sputtering target and a substrate support, an auto capacitor tuner (ACT) connected to ground and the sputtering target, and a controller configured to energize the cleaning gas disposed in the inner volume of the processing chamber to create the plasma and tune the sputtering target using the ACT to maintain a predetermined potential difference between the plasma in the inner volume and the process kit during the etch process to remove sputtering material from the process kit, wherein the predetermined potential difference is based on a resonant point of the ACT.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: February 13, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Zhiyong Wang, Halbert Chong, John C. Forster, Irena H. Wysok, Tiefeng Shi, Gang Fu, Renu Whig, Keith A Miller, Sundarapandian Ramalinga Vijayalakshmi Reddy, Jianxin Lei, Rongjun Wang, Tza-Jing Gung, Kirankumar Neelasandra Savandaiah, Avinash Nayak, Lei Zhou
  • Patent number: 11846013
    Abstract: An apparatus leverages a physical vapor deposition (PVD) process chamber with a wafer-to-target distance of approximately 400 millimeters to deposit tantalum film on through silicon via (TSV) structures. The PVD process chamber includes a source that is configured with dual magnet source compensation. The PVD chamber also includes an upper electromagnet assembly exterior to the chamber body in close proximity to the source, a magnetron assembly in the source including dual magnets with dual radius trajectories, a shield within the chamber body, and a plurality of grounding loops that are symmetrically spaced about a periphery of a substrate support assembly and are configured to provide an RF ground return path between the substrate support assembly and the shield.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: December 19, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: David Gunther, Jiao Song, Kirankumar Neelasandra Savandaiah, Irena H. Wysok, Anthony Chih-Tung Chan
  • Patent number: 11817331
    Abstract: A shutter disc for use in a cluster tool assembly having a processing chamber and a transfer arm includes an inner disc and an outer disc configured to be disposed on the inner disc. The inner disc includes a plurality of locating features configured to mate with locating pins of a transfer arm of a cluster tool assembly and a plurality of centering features configured to mate with alignment elements of a substrate support disposed in the processing chamber of the cluster tool assembly.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: November 14, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Srinivasa Rao Yedla, Kirankumar Neelasandra Savandaiah, Thomas Brezoczky, Bhaskar Prasad, Nitin Bharadwaj Satyavolu
  • Publication number: 20230323536
    Abstract: Aspects of the present disclosure provide systems and apparatuses for a substrate processing assembly with a laminar flow cavity gas injection for high and low pressure. A dual gas reservoir assembly is provided in a substrate processing chamber, positioned within a lower shield assembly. A first gas reservoir is in fluid communication with a processing volume of the substrate processing assembly via a plurality of gas inlet, positioned circumferentially about the processing volume. A second gas reservoir is positioned circumferentially about the first gas reservoir, coupled therewith via one or more reservoir ports. The second gas reservoir is in fluid communication with a first gas source. A recursive path gas assembly is positioned in an upper shield body adjacent to an electrode to provide one or more gases to a dark space gap.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 12, 2023
    Inventors: Kirankumar Neelasandra SAVANDAIAH, Srinivasa Rao YEDLA, Nitin Bharadwaj SATYAVOLU, Ganesh SUBBUSWAMY, Devi Raghavee VEERAPPAN, Thomas BREZOCZKY
  • Publication number: 20230282500
    Abstract: Embodiments of the present disclosure relate to apparatus, systems and methods for substrate processing. A detachable substrate support is disposed within a processing volume of a processing chamber and the substrate support includes a substrate interfacing surface and a back surface. The pedestal hub has a supporting surface removably coupled to the substrate support. A hub volume of the pedestal hub includes temperature measuring assembly disposed therein positioned to receive electromagnetic energy emitted from the back surface of the substrate support. The temperature measuring assembly measures an intensity of the electromagnetic energy entering the assembly and generates intensity signals. An apparent temperature of the substrate is determined based on the intensity signals.
    Type: Application
    Filed: May 15, 2023
    Publication date: September 7, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Bhaskar PRASAD, Kirankumar Neelasandra SAVANDAIAH, Thomas BREZOCZKY, Srinivasa Rao YEDLA
  • Patent number: 11749542
    Abstract: Embodiments of the present disclosure relate to apparatus, systems and methods for substrate processing. A detachable substrate support is disposed within a processing volume of a processing chamber and the substrate support includes a substrate interfacing surface and a back surface. The pedestal hub has a supporting surface removably coupled to the substrate support. A hub volume of the pedestal hub includes temperature measuring assembly disposed therein positioned to receive electromagnetic energy emitted from the back surface of the substrate support. The temperature measuring assembly measures an intensity of the electromagnetic energy entering the assembly and generates intensity signals. An apparent temperature of the substrate is determined based on the intensity signals.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: September 5, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Bhaskar Prasad, Kirankumar Neelasandra Savandaiah, Thomas Brezoczky, Srinivasa Rao Yedla
  • Publication number: 20230212735
    Abstract: Embodiments disclosed herein generally relate to a system and, more specifically, a substrate processing system. The substrate processing system includes one or more cooling systems. The cooling systems are configured to lower and/or control the temperature of a body of the substrate processing system. The cooling systems include features to cool the body disposed in the substrate processing system using gas and/or liquid cooling systems. The cooling systems disclosed herein can be used when the body is disposed at any height.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 6, 2023
    Inventors: Nagabhushana NANJUNDAPPA, Kirankumar Neelasandra SAVANDAIAH, Srinivasa Rao YEDLA, Thomas BREZOCZKY, Bhaskar PRASAD
  • Publication number: 20230187191
    Abstract: Embodiments of process shield for use in process chambers are provided herein. In some embodiments, a process shield for use in a process chamber includes: an annular body having an upper portion and a lower portion extending downward and radially inward from the upper portion, wherein the upper portion includes a plurality of annular trenches on an upper surface thereof and having a plurality of slots disposed therebetween to fluidly couple the plurality of annular trenches, wherein one or more inlets extend from an outer surface of the annular body to an outermost trench of the plurality of annular trenches.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 15, 2023
    Inventors: Kirankumar Neelasandra SAVANDAIAH, Shane LAVAN, Sundarapandian Ramalinga Vijayalakshmi REDDY, Randal Dean SCHMIEDING, Yong CAO
  • Patent number: 11674227
    Abstract: Aspects of the present disclosure provide systems and apparatuses for a substrate processing assembly with a laminar flow cavity gas injection for high and low pressure. A dual gas reservoir assembly is provided in a substrate processing chamber, positioned within a lower shield assembly. A first gas reservoir is in fluid communication with a processing volume of the substrate processing assembly via a plurality of gas inlet, positioned circumferentially about the processing volume. A second gas reservoir is positioned circumferentially about the first gas reservoir, coupled therewith via one or more reservoir ports. The second gas reservoir is in fluid communication with a first gas source. A recursive path gas assembly is positioned in an upper shield body adjacent to an electrode to provide one or more gases to a dark space gap.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: June 13, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Kirankumar Neelasandra Savandaiah, Srinivasa Rao Yedla, Nitin Bharadwaj Satyavolu, Ganesh Subbuswamy, Devi Raghavee Veerappan, Thomas Brezoczky
  • Publication number: 20230178416
    Abstract: A floating pin for positioning a substrate relative to a substrate support includes a shaft configured to move through a guide hole in a substrate support, and a pin head including a top surface and a flat shoulder surface disposed between the top surface and the shaft. The flat shoulder surface is configured to be seated on a recessed surface of the substrate support and seal the guide hole of the substrate support.
    Type: Application
    Filed: April 12, 2021
    Publication date: June 8, 2023
    Inventors: Sreenath SOVENAHALLI, Kirankumar Neelasandra SAVANDAIAH, Bhaskar PRASAD, Srinivasa Rao YEDLA, Thomas BREZOCZKY
  • Patent number: 11646217
    Abstract: Embodiments of the present disclosure generally relate to methods and apparatus for processing substrates. More specifically, embodiments of the present disclosure relate to transfer apparatus and substrate-supporting members. In an embodiment, an apparatus for transferring a substrate is provided. The apparatus includes a hub and a plurality of transfer arms extending from the hub. The apparatus further includes a plurality of substrate-supporting members, wherein each of the transfer arms has a first end coupled to the hub and a second end coupled to a respective one of the plurality of substrate-supporting members. The apparatus further includes a first electrical interface connection for electrostatically chucking a substrate and located at a first position on each substrate-supporting member, and a second electrical interface connection for electrostatically chucking the substrate and located at a second position on each substrate-supporting member. Substrate processing modules are also described.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: May 9, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Anubhav Srivastava, Bhaskar Prasad, Kirankumar Neelasandra Savandaiah, Thomas Brezoczky, Srinivasa Rao Yedla, Lakshmikanth Krishnamurthy Shirahatti
  • Publication number: 20230122956
    Abstract: Methods and apparatus for processing a substrate are provided herein. For example, a processing chamber for processing a substrate comprises a sputtering target, a chamber wall at least partially defining an inner volume within the processing chamber and connected to ground, a power source comprising an RF power source, a process kit surrounding the sputtering target and a substrate support, an auto capacitor tuner (ACT) connected to ground and the sputtering target, and a controller configured to energize the cleaning gas disposed in the inner volume of the processing chamber to create the plasma and tune the sputtering target using the ACT to maintain a predetermined potential difference between the plasma in the inner volume and the process kit during the etch process to remove sputtering material from the process kit, wherein the predetermined potential difference is based on a resonant point of the ACT.
    Type: Application
    Filed: October 20, 2021
    Publication date: April 20, 2023
    Inventors: Zhiyong WANG, Halbert CHONG, John C. FORSTER, Irena H. WYSOK, Tiefeng SHI, Gang FU, Renu WHIG, Keith A. MILLER, Sundarapandian Ramalinga Vijayalakshmi REDDY, Jianxin LEI, Rongjun WANG, Tza-Jing GUNG, Kirankumar Neelasandra SAVANDAIAH, Avinash NAYAK, Lei ZHOU
  • Publication number: 20230116153
    Abstract: Aspects of the disclosure provided herein generally relate to a fluid flow network configured to cool subsystems of a substrate processing system. Aspects of the disclosure provide a fluid flow network and method that adjusts the flow of the cooling fluid through each subsystem of the substrate processing system. The methods described herein can include maintaining a flow rate of the cooling fluid through each subsystem over a range of cooling fluid pressures. The methods described herein can further include configuring the fluid flow network to equalize a flow rate of the cooling fluid through similar subsystems such that the flow rate through each subsystem is similar without adjustment.
    Type: Application
    Filed: June 28, 2022
    Publication date: April 13, 2023
    Inventors: Lakshmikanth Krishnamurthy SHIRAHATTI, Kirankumar Neelasandra SAVANDAIAH, Prashant A. DESAI, Thomas BREZOCZKY
  • Publication number: 20230088457
    Abstract: A substrate processing system that includes a multi-station processing chamber that includes a plurality of process stations is provided. Each process station has one or more processing components cooled by a cooling system. In one embodiment, the cooling system includes a closed loop monitoring system comprising a flow control valve fluidly coupled to a coolant supply line, a valve position measuring system for continuously monitoring the position of the valve, and a valve position controller for adjusting the position of the valve.
    Type: Application
    Filed: July 12, 2022
    Publication date: March 23, 2023
    Inventors: Lakshmikanth Krishnamurthy SHIRAHATTI, Kirankumar Neelasandra SAVANDAIAH, Thomas BREZOCZKY, Pallab KARMAKAR
  • Patent number: D1007449
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: December 12, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: David Gunther, Kirankumar Neelasandra Savandaiah, Jiao Song, Madan Kumar Shimoga Mylarappa, Yue Cui, Nuno Yen-Chu Chen, Mengxue Wu