Patents by Inventor PULKIT AGARWAL

PULKIT AGARWAL 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).

  • Publication number: 20250121465
    Abstract: A substrate processing apparatus includes a processing chamber and a rotating mechanism. The rotating mechanism is configured to rotate about a center axis of a shaft, where the shaft includes a flow path configured to flow gases through the shaft.
    Type: Application
    Filed: December 26, 2024
    Publication date: April 17, 2025
    Inventors: Ramesh CHANDRASEKHARAN, Michael Philip ROBERTS, Paul KONKOLA, Michael G.R. SMITH, Brian Joseph WILLIAMS, Ravi KUMAR, Pulkit AGARWAL, Adrien LAVOIE
  • Publication number: 20250087481
    Abstract: Various embodiments include a method for increasing a deposition rate of, for example, an atomic-layer deposition (ALD)-produced film onto a surface of a substrate. In one exemplary embodiment, the method includes placing the substrate in a deposition chamber, introducing a precursor gas into the deposition chamber, evacuating at least a portion of remaining precursor-gas molecules from the deposition chamber, applying a radio-frequency (RF) conversion to the substrate in the deposition chamber, performing a plasma-species RF purge, and introducing a hydrogen (Fh) gas into the deposition chamber during one or more of the operations including introducing the precursor gas into the deposition chamber, evacuating at least the portion of remaining precursor-gas molecules from the deposition chamber, applying the RF conversion step to the substrate in the deposition chamber, and performing the plasma-species RF purge. Other methods are disclosed.
    Type: Application
    Filed: June 24, 2022
    Publication date: March 13, 2025
    Inventors: Awnish Gupta, Frank L. Pasquale, Adrien Lavoie, Shiva Sharan Bhandari, Pulkit Agarwal, Bart Jan van Schravendijk
  • Patent number: 12209312
    Abstract: A system to process a semiconductor substrate includes a substrate support assembly configured to support the semiconductor substrate. The substrate support assembly includes M resistive heaters respectively arranged in M zones in a layer of the substrate support assembly, where M is an integer greater than 1. The layer is adjacent to the semiconductor substrate. The substrate support assembly includes N temperature sensors arranged at N locations in the layer, where N is an integer greater than 1 and less than or equal to M. The system further includes a controller configured to control one or more of the M resistive heaters based on a temperature sensed by one of the N temperature sensors and average temperatures of one or more of the M zones.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: January 28, 2025
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Ramesh Chandrasekharan, Michael Philip Roberts, Aaron Bingham, Ashish Saurabh, Adrien Lavoie, Pulkit Agarwal, Ravi Kumar
  • Patent number: 12186851
    Abstract: A method for evacuating a volume below a substrate in a substrate processing system includes arranging the substrate on a lift mechanism of a substrate support to define the volume below the substrate between the substrate and an upper surface of the substrate support. An evacuation step is initiated to evacuate the volume below the substrate. The evacuation step includes pumping down the volume below the substrate at least one of through and around the lift mechanism. The lift mechanism is lowered during the evacuation step to position the substrate on the upper surface of the substrate support and the evacuation step is terminated.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: January 7, 2025
    Assignee: Lam Research Corporation
    Inventors: Ramesh Chandrasekharan, Michael Philip Roberts, Paul Konkola, Michael G. R. Smith, Brian Joseph Williams, Ravi Kumar, Pulkit Agarwal, Adrien Lavoie
  • Publication number: 20240395513
    Abstract: Systems and methods for cleaning a processing chamber include supplying a pre-activated cleaning gas through a collar surrounding a showerhead stem into the processing chamber to clean the processing chamber. In other embodiments, a cleaning gas is supplied to the collar, and RF power is supplied to the showerhead or to a pedestal to generate plasma in the processing chamber to clean the processing chamber. In still other embodiments, an inert gas is supplied to the collar, a pre-activated cleaning gas is supplied to the showerhead stem, and RF power is supplied to the showerhead or to the pedestal to generate plasma in the processing chamber to clean the processing chamber.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Inventors: Adrien LAVOIE, Pulkit Agarwal, Frank Loren Pasquale, Purushottam Kumar
  • Publication number: 20240392443
    Abstract: A substrate processing system is provided and includes a substrate support, a memory, and calibration, operating parameter, and solving modules. The substrate support supports a substrate and includes temperature control elements. The memory stores, for the temperature control elements, temperature calibration values and sensitivity calibration values. The calibration module, during calibration of the temperature control elements, performs a first calibration process to determine the temperature calibration values or a second calibration process to determine the sensitivity calibration values. The sensitivity calibration values relate at least one of trim amounts or deposition amounts to temperature changes. The operating parameter module determines operating parameters for the temperature control elements based on the temperature and sensitivity calibration values.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 28, 2024
    Inventors: Ramesh CHANDRASEKHARAN, Michael Philip ROBERTS, Pulkit AGARWAL, Adrien LAVOIE, Ravi KUMAR, Nuoya YANG, Chan Myae Myae SOE, Ashish SAURABH
  • Publication number: 20240355624
    Abstract: Methods and apparatuses for forming spacer material for multiple patterning schemes by depositing a sacrificial layer on a carbon-containing mandrel during a multiple patterning scheme prior to depositing a spacer material and removing the sacrificial layer while depositing a spacer on the carbon-containing mandrel, and/or by forming at least initial layers of a spacer material directly on a mandrel using a soft atomic layer deposition process involving plasma treatment during the atomic layer deposition are provided.
    Type: Application
    Filed: August 22, 2022
    Publication date: October 24, 2024
    Inventors: Nuoya Yang, Pulkit Agarwal, Jennifer Leigh Petraglia, Ching-Yun Chang, Jeongseok Ha
  • Publication number: 20240327973
    Abstract: A method comprising: providing a substrate in a processing station comprising a substrate support and a showerhead, the substrate comprising a gap to be filled; and depositing silicon-containing film in the gap by a plasma-enhanced atomic layer deposition (PEALD) process comprising multiple cycles of operations (a)-(d): (a) a dose operation comprising flowing a silicon-containing precursor into the processing station via the showerhead to allow the silicon-containing precursor to adsorb onto the substrate; (b) after (a), flowing a purge gas into the processing station; (c) after (b), exposing the substrate to plasma species to react with the adsorbed silicon-containing precursor; and (d) after (c), flowing a purge gas into the processing station, wherein the silicon-containing precursor continues to flow into the processing station during at least (b).
    Type: Application
    Filed: July 1, 2022
    Publication date: October 3, 2024
    Inventors: Ravi KUMAR, Pulkit AGARWAL, Adrien LAVOIE, Dustin Zachary AUSTIN, Joseph R. ABEL, Douglas Walter AGNEW, Jonathan Grant BAKER
  • Publication number: 20240332007
    Abstract: Methods and apparatuses for depositing thin films using long and short conversion times during alternating cycles of atomic layer deposition (ALD) are provided herein. Embodiments involve alternating conversion duration of an ALD cycle in one or more cycles of a multi-cycle ALD process. Some embodiments involve modulation of dose, purge, pressure, plasma power or plasma energy in two or more ALD cycles.
    Type: Application
    Filed: June 7, 2024
    Publication date: October 3, 2024
    Inventors: Chan Myae Myae Soe, Chloe Baldasseroni, Shiva Sharan Bhandari, Pulkit Agarwal, Adrien LaVoie, Bart J. Van Schravendijk
  • Patent number: 12071689
    Abstract: A substrate processing system is provided and includes a substrate support, a memory, and calibration, operating parameter, and solving modules. The substrate support supports a substrate and includes temperature control elements. The memory stores, for the temperature control elements, temperature calibration values and sensitivity calibration values. The calibration module, during calibration of the temperature control elements, performs a first calibration process to determine the temperature calibration values or a second calibration process to determine the sensitivity calibration values. The sensitivity calibration values relate at least one of trim amounts or deposition amounts to temperature changes. The operating parameter module determines operating parameters for the temperature control elements based on the temperature and sensitivity calibration values.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: August 27, 2024
    Assignee: Lam Research Corporation
    Inventors: Ramesh Chandrasekharan, Michael Philip Roberts, Pulkit Agarwal, Adrien Lavoie, Ravi Kumar, Nuoya Yang, Chan Myae Myae Soe, Ashish Saurabh
  • Patent number: 12057300
    Abstract: Systems and methods for cleaning a processing chamber include supplying a pre-activated cleaning gas through a collar surrounding a showerhead stem into the processing chamber to clean the processing chamber. In other embodiments, a cleaning gas is supplied to the collar, and RF power is supplied to the showerhead or to a pedestal to generate plasma in the processing chamber to clean the processing chamber. In still other embodiments, an inert gas is supplied to the collar, a pre-activated cleaning gas is supplied to the showerhead stem, and RF power is supplied to the showerhead or to the pedestal to generate plasma in the processing chamber to clean the processing chamber.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: August 6, 2024
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Adrien Lavoie, Pulkit Agarwal, Frank Loren Pasquale, Purushottam Kumar
  • Patent number: 12040181
    Abstract: Methods and apparatuses for depositing thin films using long and short conversion times during alternating cycles of atomic layer deposition (ALD) are provided herein. Embodiments involve alternating conversion duration of an ALD cycle in one or more cycles of a multi-cycle ALD process. Some embodiments involve modulation of dose, purge, pressure, plasma power or plasma energy in two or more ALD cycles.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 16, 2024
    Assignee: Lam Research Corporation
    Inventors: Chan Myae Myae Soe, Chloe Baldasseroni, Shiva Sharan Bhandari, Pulkit Agarwal, Adrien LaVoie, Bart J. van Schravendijk
  • Publication number: 20240183034
    Abstract: A method for processing a substrate is provided, wherein the substrate is located below a showerhead in a processing chamber. A deposition layer is deposited on the substrate, wherein at least one deposition gas is provided through the showerhead. A secondary purge gas is flowed during the depositing the deposition layer from a location outside of the showerhead in the processing chamber forming a flow curtain around an outer edge of the showerhead, wherein the secondary purge gas comprises at least one component gas. A partial pressure of the at least one component gas is changed over time during the depositing the deposition layer, wherein the depositing the deposition layer has a non-uniformity, wherein the changing the partial pressure changes the non-uniformity over time during the depositing the deposition layer.
    Type: Application
    Filed: February 15, 2024
    Publication date: June 6, 2024
    Inventors: Pulkit AGARWAL, Adrien LAVOIE, Purushottam KUMAR
  • Patent number: 11913113
    Abstract: A method for processing a substrate is provided, wherein the substrate is located below a showerhead in a processing chamber. A deposition layer is deposited on the substrate, wherein at least one deposition gas is provided through the showerhead. A secondary purge gas is flowed during the depositing the deposition layer from a location outside of the showerhead in the processing chamber forming a flow curtain around an outer edge of the showerhead, wherein the secondary purge gas comprises at least one component gas. A partial pressure of the at least one component gas is changed over time during the depositing the deposition layer, wherein the depositing the deposition layer has a non-uniformity, wherein the changing the partial pressure changes the non-uniformity over time during the depositing the deposition layer.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: February 27, 2024
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Pulkit Agarwal, Adrien Lavoie, Purushottam Kumar
  • Publication number: 20230175117
    Abstract: Methods of filling a gap with a dielectric material including using an inhibitor plasma during deposition. The inhibitor plasma increases a nucleation barrier of the deposited film. When the inhibitor plasma interacts with material in the feature, the material at the bottom of the feature receives less plasma treatment than material located closer to a top portion of the feature or in field. Deposition at the top of the feature is then selectively inhibited and deposition in lower portions of the feature proceeds with less inhibition or without being inhibited. As a result, bottom-up fill is enhanced, which can create a sloped profile that mitigates the seam effect and prevents void formation. In some embodiments, an underlying material at the top of the feature is protected using an integrated liner. In some embodiments, a hydrogen chemistry is used during gap fill to reduce seam formation.
    Type: Application
    Filed: March 31, 2021
    Publication date: June 8, 2023
    Inventors: Dustin Zachary AUSTIN, Ian John CURTIN, Joseph R. ABEL, Bart J. VAN SCHRAVENDIJK, Seshasayee VARADARAJAN, Adrien LAVOIE, Jeremy David FIELDS, Pulkit AGARWAL, Shiva Sharan BHANDARI
  • Publication number: 20230170195
    Abstract: A method for performing a feedback sequence for patterning CD control. The method including performing a series of process steps on a wafer to obtain a plurality of features, wherein a process step is performed under a process condition. The method including measuring a dimension of the plurality of features after performing the series of process steps. The method including determining a difference between the dimension that is measured and a target dimension for the plurality of features. The method including modifying the process condition for the process step based on the difference and a sensitivity factor for the plurality of features relating change in dimension and change in process condition.
    Type: Application
    Filed: May 4, 2021
    Publication date: June 1, 2023
    Inventors: Ravi Kumar, Pulkit Agarwal, Michael Philip Roberts, Ramesh Chandrasekharan, Adrien Lavoie
  • Patent number: 11651963
    Abstract: A method for forming features over a wafer with a carbon based deposition is provided. The carbon based deposition is pretuned, wherein the pretuning causes a non-uniform removal of some of the carbon based deposition. An oxide deposition is deposited through an atomic layer deposition process, wherein the depositing the oxide deposition causes a non-uniform removal of some of the carbon based deposition. At least one additional process is provided, wherein the at least one additional process completes formation of features over the wafer, wherein the features are more uniform than features that would be formed without pretuning.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: May 16, 2023
    Assignee: Lam Research Corporation
    Inventors: Ishtak Karim, Pulkit Agarwal, Joseph R. Abel, Purushottam Kumar, Adrien Lavoie
  • Patent number: 11542599
    Abstract: An apparatus for processing stacks is provided. A first gas source is provided. A first gas manifold is connected to the first gas source. A first processing station has a first gas outlet, wherein the first gas outlet is connected to the first gas manifold. A first variable conductance valve is between the first gas source and the first gas outlet along the first gas manifold.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: January 3, 2023
    Assignee: Lam Research Corporation
    Inventors: Adrien Lavoie, Pulkit Agarwal
  • Patent number: 11520828
    Abstract: A computer-implemented method for representing and storing data in an extendable graph data structure using artificial intelligence includes obtaining business requirements data, business workflow data, and dictionary data. A relationship between one or more entities in the obtained business requirement data and the business workflow data is identified using the obtained dictionary data and applying a natural language processing technique and topic based trend identification from existing entities and associated attributes. An extendable graph data structure represented by an enriched adjacency matrix for the identified relationship between the one or more entities is generated and stored. One or more trends are identified using the stored graph data structure.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: December 6, 2022
    Assignee: International Business Machines Corporation
    Inventors: Pulkit Agarwal, Santanu Chakrabarty, Ajitha C, Siddhant Lahoti
  • Publication number: 20220305601
    Abstract: A method for evacuating a volume below a substrate in a substrate processing system includes arranging the substrate on a lift mechanism of a substrate support to define the volume below the substrate between the substrate and an upper surface of the substrate support. An evacuation step is initiated to evacuate the volume below the substrate. The evacuation step includes pumping down the volume below the substrate at least one of through and around the lift mechanism. The lift mechanism is lowered during the evacuation step to position the substrate on the upper surface of the substrate support and the evacuation step is terminated.
    Type: Application
    Filed: June 16, 2020
    Publication date: September 29, 2022
    Inventors: Ramesh CHANDRASEKHARAN, Michael Philip ROBERTS, Paul KONKOLA, Michael G.R. SMITH, Brian Joseph WILLAMS, Ravi KUMAR, Pulkit AGARWAL, Adrien LAVOIB