Patents by Inventor Chaitanya Anjaneyalu PRASAD

Chaitanya Anjaneyalu PRASAD 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: 20230133402
    Abstract: The present disclosure relates to a gas injection module for a process chamber. The process chamber includes a chamber body, a rotatable substrate support disposed inside a process volume of the chamber body, the substrate support configured to have a rotational spin rate; an inlet port formed in the chamber body, and an injection module coupled to the inlet port. The injection module includes a body, one or more gas inlets coupled to the body, and a plurality of nozzles formed in a supply face of the body, the supply face configured to face inside the chamber body, and gas exiting from the injection module is configured to have a flow rate; the process chamber also includes a controller configured to operate the process chamber such that the ratio of the flow rate to the rotational spin rate is between about 1/3 and 3.
    Type: Application
    Filed: October 18, 2022
    Publication date: May 4, 2023
    Inventors: Christopher S. OLSEN, Kartik Bhupendra SHAH, Chaitanya Anjaneyalu PRASAD, Vishwas Kumar PANDEY, AnilKumar BODEPUDI, Erika HANSEN
  • Patent number: 11562915
    Abstract: Methods, systems, and apparatus provide for optically monitoring individual lamps of substrate processing chambers. In one aspect, the individual lamps are monitored to determine if one or more lamps are in need of replacement. A method includes using one or more camera coupled to a borescope to capture a plurality of images of one or more lamps in a substrate processing chamber. The plurality of images is analyzed to identify a change of mean light pixel intensity in an image reference region associated with each lamp. The method includes generating an alert based on the detection of the mean light pixel intensity change.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: January 24, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Ji-Dih Hu, Chaitanya Anjaneyalu Prasad, Dongming Iu, Samuel C. Howells, Vilen K. Nestorov
  • Publication number: 20220415676
    Abstract: Embodiments of gas distribution modules for use with rapid thermal processing (RTP) systems and methods of use thereof are provided herein. In some embodiments, a gas distribution module for use with a RTP chamber includes: a first carrier gas line and a first liquid line fluidly coupled to a mixer, the mixer having one or more control valves configured to mix a carrier gas from the first carrier gas line and a liquid from the first liquid line in a desired ratio to form a first mixture; a vaporizer coupled to the mixer and configured to receive the first mixture in a hollow internal volume, the vaporizer having a heater configured to vaporize the first mixture; and a first gas delivery line disposed between the vaporizer and the RTP chamber to deliver the vaporized first mixture to the RTP chamber.
    Type: Application
    Filed: June 29, 2021
    Publication date: December 29, 2022
    Inventors: Chaitanya Anjaneyalu PRASAD, Christopher Sean OLSEN, Lara HAWRYLCHAK, Erika Gabrielle HANSEN, Daniel C. GLOVER, Naman APURVA, Tsung-Han YANG
  • Publication number: 20220301904
    Abstract: Methods, systems, and apparatus provide for optically monitoring individual lamps of substrate processing chambers. In one aspect, the individual lamps are monitored to determine if one or more lamps are in need of replacement. A method includes using one or more camera coupled to a borescope to capture a plurality of images of one or more lamps in a substrate processing chamber. The plurality of images is analyzed to identify a change of mean light pixel intensity in an image reference region associated with each lamp. The method includes generating an alert based on the detection of the mean light pixel intensity change.
    Type: Application
    Filed: January 24, 2022
    Publication date: September 22, 2022
    Inventors: Ji-Dih HU, Chaitanya Anjaneyalu PRASAD, Dongming IU, Samuel C. HOWELLS, Vilen K. NESTOROV
  • Publication number: 20220262657
    Abstract: A method and apparatus for improved temperature control of a substrate is disclosed. In one embodiment, a pedestal is disclosed that includes a top plate, and a base plate coupled to the top plate, wherein the top plate comprises a multi-zone heater and the base plate comprises a plurality of grooves formed in a bottom surface thereof.
    Type: Application
    Filed: June 30, 2020
    Publication date: August 18, 2022
    Inventors: Rohit MAHAKALI, Wenfei ZHANG, Chaitanya Anjaneyalu PRASAD