Patents by Inventor Ashish Saurabh

Ashish Saurabh 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: 20250038034
    Abstract: Electrostatic chuck (ESC) apparatuses and systems are provided. An ESC may have one or more chucking electrodes and a blocking electrode that surrounds the chucking electrodes. The blocking electrode may reduce non-uniformities in semiconductor processing operations performed with the ESC. In some implementations, the blocking electrode is positioned beneath the chucking electrodes.
    Type: Application
    Filed: January 24, 2023
    Publication date: January 30, 2025
    Inventors: Stephen Topping, Patrick G. Breiling, Sergey Georgiyevich Belostotskiy, Ramesh Chandrasekharan, Timothy Scott Thomas, Mahmoud Vahidi, Yukinori Sakiyama, David French, Meenakshi Mamunuru, Ashish Saurabh, Pramod Subramonium, Noah Elliot Baker
  • 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
  • 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
  • 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
  • Publication number: 20230341448
    Abstract: An apparatus may include one or more measurement sensors, which may measure power coupled to one or more process stations of the apparatus. The apparatus may additionally include one or more analog-to-digital converters coupled to an output port of a corresponding one of the one or more measurement sensors, which may provide a digital representation of a RF signal measured by the one or more measurement sensors. A processor, coupled to a memory, may determine a crossing of the digital representation of the signal with a reference signal level and may thus determine a frequency content of the RF signal and the characteristic, which may permit the nulling out of phase lag of the one or more measurement sensors.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 26, 2023
    Inventors: Ashish Saurabh, Karl Frederick Leeser
  • Publication number: 20220333239
    Abstract: A heat shield for a platen of a substrate support includes a body and absorption-reflection-transmission regions. The absorption-reflection-transmission regions are in contact with the body and are configured to at least one of affect or modulate at least a portion of a heat flux pattern between a distal reference surface and the platen. The absorption-reflection-transmission regions include tunable aspects to tune the at least a portion of the heat flux pattern.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 20, 2022
    Inventors: Ashish SAURABH, Karl Frederick LEESER, Xinyi CHEN, Mukesh Dhami SINGH, Troy GOMM, Timothy Scott THOMAS, Curtis W. BAILEY
  • Publication number: 20220243332
    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: Application
    Filed: June 22, 2020
    Publication date: August 4, 2022
    Inventors: Ramesh CHANDRASEKHARAN, Michael Philip ROBERTS, Aaron BINGHAM, Ashish SAURABH, Adrien LAVOIE, Pulkit AGARWAL, Ravi KUMAR
  • Publication number: 20220205105
    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: February 12, 2020
    Publication date: June 30, 2022
    Inventors: Ramesh CHANDRASEKHARAN, Michael Philip ROBERTS, Pulkit AGARWAL, Adrien LAVOIE, Ravi KUMAR, Nuoya YANG, Chan Myae Myae SOE, Ashish SAURABH
  • Patent number: 11236422
    Abstract: A substrate processing system configured to perform a deposition process on a substrate includes a substrate support including a plurality of zones and a plurality of resistive heaters arranged throughout the plurality of zones. The plurality of resistive heaters includes separately-controllable resistive heaters arranged in respective ones of the plurality of zones. A controller is configured to, during the deposition process, control the plurality of resistive heaters to selectively adjust temperatures within the plurality of zones.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 1, 2022
    Assignee: Lam Research Corporation
    Inventors: Michael Philip Roberts, Ramesh Chandrasekharan, Pulkit Agarwal, Aaron Bingham, Ashish Saurabh, Ravi Kumar, Jennifer Leigh Petraglia
  • Publication number: 20190153600
    Abstract: A substrate processing system configured to perform a deposition process on a substrate includes a substrate support including a plurality of zones and a plurality of resistive heaters arranged throughout the plurality of zones. The plurality of resistive heaters includes separately-controllable resistive heaters arranged in respective ones of the plurality of zones. A controller is configured to, during the deposition process, control the plurality of resistive heaters to selectively adjust temperatures within the plurality of zones.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Inventors: Michael Philip Roberts, Ramesh Chandrasekharan, Pulkit Agarwal, Aaron Bingham, Ashish Saurabh, Ravi Kumar, Jennifer Leigh Petraglia