Patents by Inventor Khokan Chandra Paul

Khokan Chandra Paul 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: 11887811
    Abstract: Exemplary semiconductor substrate supports may include a pedestal having a shaft and a platen. The semiconductor substrate supports may include a cover plate. The cover plate may be coupled with the platen along a first surface of the cover plate. The cover plate may define a recessed channel in a second surface of the cover plate opposite the first surface. The semiconductor substrate supports may include a puck coupled with the second surface of the cover plate. The puck may incorporate an electrode. The puck may define a plurality of apertures extending vertically through the puck to fluidly access the recessed channel defined in the cover plate.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: January 30, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Ravikumar Patil
  • Publication number: 20230390811
    Abstract: Exemplary semiconductor processing systems may include a processing chamber defining a processing region. The systems may include a foreline coupled with the processing chamber, the foreline defining a fluid conduit. The systems may include a radical generator having an inlet and an outlet. The outlet may be fluidly coupled with the foreline. The systems may include a gas source fluidly coupled with the inlet of the radical generator. The systems may include a throttle valve coupled with the foreline downstream of the radical generator.
    Type: Application
    Filed: June 6, 2022
    Publication date: December 7, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Truong Van Nguyen, Kelvin Chan, Diwakar Kedlaya, Anantha K. Subramani, Abdul Aziz Khaja, Vijet Patil, Yusheng Fang, Liangfa Hu, Prashant Kumar Kulshreshtha
  • Publication number: 20230343552
    Abstract: Exemplary semiconductor substrate supports may include a pedestal shaft. The semiconductor substrate supports may include a platen. The platen may define a fluid channel across a first surface of the platen. The semiconductor substrate supports may include a platen insulator positioned between the platen and the pedestal shaft. The semiconductor substrate supports may include a conductive puck coupled with the first surface of the platen and configured to contact a substrate supported on the semiconductor substrate support. The semiconductor substrate supports may include a conductive shield extending along a backside of the platen insulator and coupled between a portion of the platen insulator and the pedestal shaft.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Ravikumar Patil, Vijet Patil, Carlaton Wong, Adam J. Fischbach, Timothy Franklin, Tsutomu Tanaka, Canfeng Lai
  • Patent number: 11699571
    Abstract: Exemplary semiconductor substrate supports may include a pedestal shaft. The semiconductor substrate supports may include a platen. The platen may define a fluid channel across a first surface of the platen. The semiconductor substrate supports may include a platen insulator positioned between the platen and the pedestal shaft. The semiconductor substrate supports may include a conductive puck coupled with the first surface of the platen and configured to contact a substrate supported on the semiconductor substrate support. The semiconductor substrate supports may include a conductive shield extending along a backside of the platen insulator and coupled between a portion of the platen insulator and the pedestal shaft.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: July 11, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Ravikumar Patil, Vijet Patil, Carlaton Wong, Adam J. Fischbach, Timothy Franklin, Tsutomu Tanaka, Canfeng Lai
  • Publication number: 20230170231
    Abstract: Exemplary substrate processing systems may include a factory interface and a load lock coupled with the factory interface. The systems may include a transfer chamber coupled with the load lock. The transfer chamber may include a robot configured to retrieve substrates from the load lock. The systems may include a chamber system positioned adjacent and coupled with the transfer chamber. The chamber system may include a transfer region laterally accessible to the robot. The transfer region may include a plurality of substrate supports disposed about the transfer region. Each substrate support of the plurality of substrate supports may be vertically translatable. The transfer region may also include a transfer apparatus rotatable about a central axis and configured to engage substrates and transfer substrates among the plurality of substrate supports. The chamber system may also include a plurality of processing regions vertically offset and axially aligned with an associated substrate support.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 1, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Jason M. Schaller, Steve Hongkham, Charles T. Carlson, Tuan A. Nguyen, Swaminathan T. Srinivasan, Khokan Chandra Paul
  • Patent number: 11574826
    Abstract: Exemplary substrate processing systems may include a factory interface and a load lock coupled with the factory interface. The systems may include a transfer chamber coupled with the load lock. The transfer chamber may include a robot configured to retrieve substrates from the load lock. The systems may include a chamber system positioned adjacent and coupled with the transfer chamber. The chamber system may include a transfer region laterally accessible to the robot. The transfer region may include a plurality of substrate supports disposed about the transfer region. Each substrate support of the plurality of substrate supports may be vertically translatable. The transfer region may also include a transfer apparatus rotatable about a central axis and configured to engage substrates and transfer substrates among the plurality of substrate supports. The chamber system may also include a plurality of processing regions vertically offset and axially aligned with an associated substrate support.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: February 7, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Jason M. Schaller, Steve Hongkham, Charles T. Carlson, Tuan A. Nguyen, Swaminathan T. Srinivasan, Khokan Chandra Paul
  • Publication number: 20230033058
    Abstract: Exemplary semiconductor processing systems may include an inductively coupled plasma source. The systems may include an RF power source that is electrically coupled with the inductively coupled plasma source. The systems may include a first gas source fluidly coupled with the inductively coupled plasma source. The systems may include a second gas source. The systems may include a dual-channel showerhead assembly defining a first plurality of apertures and a second plurality of apertures. The first plurality of apertures may be fluidly coupled with the inductively coupled plasma source. The second plurality of apertures are fluidly coupled with the second gas source.
    Type: Application
    Filed: July 29, 2021
    Publication date: February 2, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Truong Van Nguyen, Diwakar Kedlaya, Maziar Aghvami, Vijet Patil, Shashank Sharma
  • Publication number: 20220130713
    Abstract: Exemplary processing systems may include a chamber body. The systems may include a pedestal configured to support a semiconductor substrate. The systems may include a faceplate. The chamber body, the pedestal, and the faceplate may define a processing region. The faceplate may be coupled with an RF power source. The systems may include a remote plasma unit. The remote plasma unit may be coupled at electrical ground. The systems may include a discharge tube extending from the remote plasma unit towards the faceplate. The discharge tube may define a central aperture. The discharge tube may be electrically coupled with each of the faceplate and the remote plasma unit. The discharge tube may include ferrite extending about the central aperture of the discharge tube.
    Type: Application
    Filed: October 23, 2020
    Publication date: April 28, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Tsutomu Tanaka, Adam J. Fischbach, Abhijit A. Kangude, Juan Carlos Rocha-Alvarez
  • Publication number: 20220093368
    Abstract: semiconductor processing chambers include a gasbox. The chambers may include a substrate support. The chambers may include a blocker plate positioned between the gasbox and the substrate support. The blocker plate may define a plurality of apertures. The chambers may include a faceplate positioned between the blocker plate and the substrate support. The faceplate may be characterized by a first surface facing the blocker plate and a second surface opposite the first surface. The second surface and the substrate support may at least partially define a processing region within the chamber. The faceplate may define an inner plurality of apertures. Each of the inner apertures may include a generally cylindrical aperture profile. The faceplate may define an outer plurality of apertures that are positioned radially outward from the inner apertures. Each of the outer apertures may include a conical aperture profile that extends through the second surface.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 24, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Saketh Pemmasani, Akshay Dhanakshirur, Mayur Govind Kulkarni, Khokan Chandra Paul, Madhu Santosh Kumar Mutyala
  • Publication number: 20220076919
    Abstract: Exemplary semiconductor substrate supports may include a pedestal having a shaft and a platen. The semiconductor substrate supports may include a cover plate. The cover plate may be coupled with the platen along a first surface of the cover plate. The cover plate may define a recessed channel in a second surface of the cover plate opposite the first surface. The semiconductor substrate supports may include a puck coupled with the second surface of the cover plate. The puck may incorporate an electrode. The puck may define a plurality of apertures extending vertically through the puck to fluidly access the recessed channel defined in the cover plate.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 10, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Ravikumar Patil
  • Publication number: 20220076920
    Abstract: Exemplary semiconductor substrate supports may include a pedestal shaft. The semiconductor substrate supports may include a platen. The platen may define a fluid channel across a first surface of the platen. The semiconductor substrate supports may include a platen insulator positioned between the platen and the pedestal shaft. The semiconductor substrate supports may include a conductive puck coupled with the first surface of the platen and configured to contact a substrate supported on the semiconductor substrate support. The semiconductor substrate supports may include a conductive shield extending along a backside of the platen insulator and coupled between a portion of the platen insulator and the pedestal shaft.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 10, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Ravikumar Patil, Vijet Patil, Carlaton Wong, Adam J. Fischbach, Timothy Franklin, Tsutomu Tanaka, Canfeng Lai
  • Publication number: 20220076922
    Abstract: Exemplary processing methods may include forming a plasma of a silicon-containing precursor. The methods may include depositing a flowable film on a semiconductor substrate with plasma effluents of the silicon-containing precursor. The semiconductor substrate may be housed in a processing region of a semiconductor processing chamber. The processing region may be defined between a faceplate and a substrate support on which the semiconductor substrate is seated. The methods may include forming a treatment plasma within the processing region of the semiconductor processing chamber. The treatment plasma may be formed at a first power level from a first power source. A second power may be applied to the substrate support from a second power source at a second power level. The methods may include densifying the flowable film within the feature defined within the semiconductor substrate with plasma effluents of the treatment plasma.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 10, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Khokan Chandra Paul, Adam J. Fischbach, Tsutomu Tanaka, Canfeng Lai
  • Publication number: 20220044930
    Abstract: Examples of the present technology include semiconductor processing methods that may include generating a plasma from a deposition precursor in a processing region of a semiconductor processing chamber. The plasma may be generated at a delivered power within a first period of time when plasma power is delivered from a power source operating at a first duty cycle. The methods may further include transitioning the power source from the first duty cycle to a second duty cycle after the first period of time. A layer may be deposited on a substrate in the processing region of the semiconductor processing chamber from the generated plasma. The layer, as deposited, may be characterized by a thickness of 50 ? or less. Exemplary deposition precursors may include one or more silicon-containing precursors, and an exemplary layer deposited on the substrate may include an amorphous silicon layer.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 10, 2022
    Applicant: Applied Materials, Inc.
    Inventor: Khokan Chandra Paul
  • Publication number: 20210143039
    Abstract: Methods of controlling stress non-uniformity for semiconductor processing may include reflecting light off a surface of a wafer with an optical imaging device disposed within a cluster tool. The cluster tool may include a multi-chamber processing system. The methods may include collecting one or more color images of the surface of the wafer. The methods may include converting the one or more color images to sample stress intensity data comparing the sample stress intensity data to reference wafer stress intensity data. The methods may include identifying deviations of the sample stress intensity data relative to the reference wafer stress intensity data. The methods may include determining corrective actions for bringing the sample stress intensity data into conformity with the reference wafer stress intensity data. The methods may include implementing the corrective actions on the multi-chamber processing system.
    Type: Application
    Filed: November 10, 2020
    Publication date: May 13, 2021
    Applicant: Applied Materials, Inc.
    Inventors: Gautam K. Hemani, Khokan Chandra Paul
  • Publication number: 20210013055
    Abstract: Exemplary substrate processing systems may include a factory interface and a load lock coupled with the factory interface. The systems may include a transfer chamber coupled with the load lock. The transfer chamber may include a robot configured to retrieve substrates from the load lock. The systems may include a chamber system positioned adjacent and coupled with the transfer chamber. The chamber system may include a transfer region laterally accessible to the robot. The transfer region may include a plurality of substrate supports disposed about the transfer region. Each substrate support of the plurality of substrate supports may be vertically translatable. The transfer region may also include a transfer apparatus rotatable about a central axis and configured to engage substrates and transfer substrates among the plurality of substrate supports. The chamber system may also include a plurality of processing regions vertically offset and axially aligned with an associated substrate support.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Applicant: Applied Materials, Inc.
    Inventors: Jason M. Schaller, Steve Hongkham, Charles T. Carlson, Tuan A. Nguyen, Swaminathan T. Srinivasan, Khokan Chandra Paul