Patents by Inventor Ravi Jallepally

Ravi Jallepally 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: 20220010431
    Abstract: A method and apparatus for producing a gas distribution apparatus are described herein. More specifically, a method and apparatus for producing triple-channel gas distribution apparatus is described herein. The gas distribution apparatus described herein includes an upper plate, a middle plate, and a lower plate. The middle plate and the lower plate are machined before all of the upper plate, the middle plate, and the lower plate are bonded. Additional machining is then performed on the gas distribution apparatus. The gas distribution apparatus is used to distribute three or more process gases into a processing chamber.
    Type: Application
    Filed: July 8, 2020
    Publication date: January 13, 2022
    Inventors: Kazuya DAITO, Ravi JALLEPALLY, Harpreet SINGH
  • Patent number: 10519546
    Abstract: Outer distribution rings and gas distribution apparatus with outer distribution rings to deliver a gas flow to a process region of a process chamber are described. The outer distribution rings include at least one plenum in fluid communication with a plurality of openings forming a plurality of trenches to allow gas to flow from the plenum through the openings and down an inner peripheral face of the outer distribution ring.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: December 31, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Ravi Jallepally, Muhammad M. Rasheed, Ilker Durukan
  • Publication number: 20190078205
    Abstract: Outer distribution rings and gas distribution apparatus with outer distribution rings to deliver a gas flow to a process region of a process chamber are described. The outer distribution rings include at least one plenum in fluid communication with a plurality of openings forming a plurality of trenches to allow gas to flow from the plenum through the openings and down an inner peripheral face of the outer distribution ring.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Ravi Jallepally, Muhammad M. Rasheed, Ilker Durukan
  • Patent number: 10167553
    Abstract: Outer distribution rings and gas distribution apparatus with outer distribution rings to deliver a gas flow to a process region of a process chamber are described. The outer distribution rings include at least one plenum in fluid communication with a plurality of openings forming a plurality of trenches to allow gas to flow from the plenum through the openings and down an inner peripheral face of the outer distribution ring.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 1, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Muhammad M. Rasheed, Ravi Jallepally, Ilker Durukan
  • Publication number: 20170283947
    Abstract: Outer distribution rings and gas distribution apparatus with outer distribution rings to deliver a gas flow to a process region of a process chamber are described. The outer distribution rings include at least one plenum in fluid communication with a plurality of openings forming a plurality of trenches to allow gas to flow from the plenum through the openings and down an inner peripheral face of the outer distribution ring.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Muhammad M. Rasheed, Ravi Jallepally, Ilker Durukan
  • Patent number: 7921803
    Abstract: The present invention generally provides method and apparatus for non-contact temperature measurement in a semiconductor processing chamber. Particularly, the present invention provides methods and apparatus for non-contact temperature measurement for temperature below 500° C. One embodiment of the present invention provides an apparatus for processing semiconductor substrates. The apparatus comprises a target component comprises a material with higher emissivity than the one or more substrates.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: April 12, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Joseph Yudovsky, Brendan McDougall, Ravi Jallepally, Yi-Chiau Huang, Maitreyee Mahajani, Kevin Griffin, Andrew C. Sherman
  • Publication number: 20100124249
    Abstract: Methods and systems for determining a radial differential metrology profile of a substrate heated in a process chamber is provided. Methods and systems for determining an angular or azimuthal differential metrology profile of a rotating substrate in a processing chamber are also provided. The radial and azimuthal differential metrology profiles are applied to adjust a reference metrology profile to provide a Virtual metrology of the process chamber. The virtual metrology is applied to control the performance of the process chamber.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 20, 2010
    Applicant: Applied Materials, Inc.
    Inventors: WOLFGANG ADERHOLD, Ravi Jallepally, Balasubramanian Ramachandran, Aaron M. Hunter, Ilias Iliopoulos
  • Publication number: 20090078198
    Abstract: The present invention generally provides method and apparatus for non-contact temperature measurement in a semiconductor processing chamber. Particularly, the present invention provides methods and apparatus for non-contact temperature measurement for temperature below 500° C. One embodiment of the present invention provides an apparatus for processing semiconductor substrates. The apparatus comprises a target component comprises a material with higher emissivity than the one or more substrates.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 26, 2009
    Inventors: JOSEPH YUDOVSKY, Brendan McDougall, Ravi Jallepally, Yi-Chiau Huang, Maitreyee Mahajani, Kevin Griffin, Andrew C. Sherman
  • Patent number: 7509035
    Abstract: A thermal processing chamber includes a substrate support rotating about a center axis and a lamphead of plural lamps in an array having a predetermined difference in radiance pattern between them. The radiance pattern includes a variation in diffuseness or collimation. In one embodiment, the center lines of all of the lamps are disposed away from the center axis. The array can be an hexagonal array, in which the center axis is located at a predetermined position between neighboring lamps.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: March 24, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Joseph M. Ranish, Corina E. Tanasa, Sundar Ramamurthy, Claudia Lai, Ravi Jallepally, Ramachandran Balasubramanian, Aaron M. Hunter, Agus Tjandra, Norman Tam
  • Publication number: 20080090309
    Abstract: A method for rapid thermal annealing is disclosed. As the substrate is inserted into an annealing chamber, it begins to heat due to the heat radiating from chamber components that were heated when a previous substrate was annealed. Thus, the leading edge of the substrate may be at an elevated temperature while the trailing edge of the substrate may be at room temperature while the substrate is inserted causing a temperature gradient is present across the substrate. Once the substrate is completely inserted into the annealing chamber, the temperature gradient may still be present. By compensating for the temperature gradient across the substrate, the substrate may be annealed uniformly.
    Type: Application
    Filed: May 20, 2007
    Publication date: April 17, 2008
    Inventors: JOSEPH RANISH, Balasubramanian Ramachandran, Ravi Jallepally, Sundar Ramamurthy, Vedapuram Achutharaman, Brian Haas, Aaron Hunter, Wolfgang Aderhold
  • Patent number: 7127367
    Abstract: Method and apparatus for obtaining a tailored heat transfer profile in a chamber housing a microprocessor manufacturing process, including estimating heat transfer properties of the chamber; estimating heat absorptive properties of a wafer; adjusting the physical characteristics of the chamber to correct the heat transfer properties; and utilizing the chamber for manufacturing microprocessors.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: October 24, 2006
    Assignee: Applied Materials, Inc.
    Inventors: Balasubramanian Ramachandran, Joseph Michael Ranish, Ravi Jallepally, Sundar Ramamurthy, Raman Achutharaman, Brian Haas, Aaron Hunter
  • Publication number: 20060066193
    Abstract: A thermal processing chamber includes a substrate support rotating about a center axis and a lamphead of plural lamps in an array having a predetermined difference in radiance pattern between them. The radiance pattern includes a variation in diffuseness or collimation. In one embodiment, the center lines of all of the lamps are disposed away from the center axis. The array can be an hexagonal array, in which the center axis is located at a predetermined position between neighboring lamps.
    Type: Application
    Filed: August 2, 2005
    Publication date: March 30, 2006
    Inventors: Joseph Ranish, Corina Tanasa, Sundar Ramamurthy, Claudia Lai, Ravi Jallepally, Ramachandran Balasubramanian, Aaron Hunter, Agus Tjandra, Norman Tam
  • Patent number: 6897131
    Abstract: Lamp based spike annealing was improved to address the aggressive requirements of <100 nm Ultra Shallow Junction (USJ) technologies. Improvements focused on enhancing cool down rates, and thereby improving spike sharpness. Boron ion implanted substrates with varying ion-implanted energy and dose were then annealed to characterize the improvements in spike annealing. A greater than 10% improvement in sheet resistance and junction depth was realized on substrates that were annealed with the improved spike profile. The improved spike anneal had the same comparable uniformity to the standard spike anneal.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: May 24, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Balasubramanian Ramachandran, Ravi Jallepally, Ryan C. Boas, Sundar Ramamurthy, Amir Al-Bayati, Houda Graoui, Joseph M. Spear
  • Publication number: 20050102108
    Abstract: Method and apparatus for obtaining a tailored heat transfer profile in a chamber housing a microprocessor manufacturing process, including estimating heat transfer properties of the chamber; estimating heat absorptive properties of a wafer; adjusting the physical characteristics of the chamber to correct the heat transfer properties; and utilizing the chamber for manufacturing microprocessors.
    Type: Application
    Filed: September 24, 2004
    Publication date: May 12, 2005
    Inventors: Balasubramanian Ramachandran, Joseph Ranish, Ravi Jallepally, Sundar Ramamurthy, Raman Achutharaman, Brian Haas, Aaron Hunter
  • Patent number: 6773507
    Abstract: Method and apparatus for depositing layers by atomic layer deposition. A virtual shower curtain is established between the substrate support and chamber to minimize the volume in which the reactants are distributed. A showerhead may be used to allow closer placement of the substrate thereto, further reducing the reaction volume. Zero dead space volume valves with close placement to the chamber lid and fast cycle times also improve the cycle times of the process.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 10, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Ravi Jallepally, Shih-Hung Li, Alain Duboust, Jun Zhao, Liang-Yuh Chen, Daniel A. Carl
  • Publication number: 20040126999
    Abstract: Lamp based spike annealing was improved to address the aggressive requirements of <100 nm Ultra Shallow Junction (USJ) technologies. Improvements focused on enhancing cool down rates, and thereby improving spike sharpness. Boron ion implanted substrates with varying ion-implanted energy and dose were then annealed to characterize the improvements in spike annealing. A greater than 10% improvement in sheet resistance and junction depth was realized on substrates that were annealed with the improved spike profile. The improved spike anneal had the same comparable uniformity to the standard spike anneal.
    Type: Application
    Filed: September 22, 2003
    Publication date: July 1, 2004
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Balasubramanian Ramachandran, Ravi Jallepally, Ryan C. Boas, Sundar Ramamurthy, Amir Al-Bayati, Houda Graoui, Joseph M. Spear
  • Publication number: 20030139005
    Abstract: A semiconductor processing chamber has been utilized to perform sequential deposition of high-K Al2O3 thin films on a substrate disposed in the chamber employing low viscosity precursors. The method commences with introduction of an aluminum precursor into the processing chamber. In this manner, a monolayer of aluminum precursor is chemisorbed onto the substrate surface. Thereafter, non-chemisorbed aluminum precursor is purged from the processing chamber, followed by introduction of an oxygen precursor. The oxygen precursor reacts with the chemisorbed layer, resulting in a monolayer of Al2O3. Finally, excess oxygen precursor and by-products of the reaction are purged completing the sequential deposition cycle. The sequential deposition cycle can be repeated to grow the Al2O3 film to a desired thickness.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 24, 2003
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Kevin Song, Ravi Jallepally, Shih-Hung Li, Liang-Yuh Chen
  • Publication number: 20030106490
    Abstract: Method and apparatus for depositing layers by atomic layer deposition. A virtual shower curtain is established between the substrate support and chamber to minimize the volume in which the reactants are distributed. A showerhead may be used to allow closer placement of the substrate thereto, further reducing the reaction volume. Zero dead space volume valves with close placement to the chamber lid and fast cycle times also improve the cycle times of the process.
    Type: Application
    Filed: August 7, 2002
    Publication date: June 12, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Ravi Jallepally, Shih-Hung Li, Alain Duboust, Jun Zhao, Liang-Yuh Chen, Daniel A. Carl
  • Patent number: 6450116
    Abstract: An apparatus and method for exposing a substrate to plasma including a first reaction chamber adapted to generate a plasma comprising ions and radicals and a second reaction chamber coupled to the first reaction chamber and adapted to house a substrate at a sight in the second reaction chamber. The second reaction chamber is coupled to the first reaction chamber by an inlet member and radicals of the plasma flow through the inlet member into the second reaction chamber.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: September 17, 2002
    Assignee: Applied Materials, Inc.
    Inventors: David B. Noble, Ravi Jallepally, Nathan D'Astici, Gary Miner, Turgut Sahin, Guangcai Xing, Yashraj Bhatnagar
  • Publication number: 20020073925
    Abstract: An apparatus and method for exposing a substrate to plasma including a first reaction chamber adapted to generate a plasma comprising ions and radicals and a second reaction chamber coupled to the first reaction chamber and adapted to house a substrate at a sight in the second reaction chamber. The second reaction chamber is coupled to the first reaction chamber by an inlet member and radicals of the plasma flow through the inlet member into the second reaction chamber.
    Type: Application
    Filed: November 12, 1999
    Publication date: June 20, 2002
    Inventors: DAVID B. NOBLE, RAVI JALLEPALLY, NATHAN D'ASTICI, GARY MINER, TURGUT SAHIN, GUANGCAI XING, YASHRAJ BHATNAGAR