Patents by Inventor Tom K. Cho

Tom K. Cho 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: 20150218697
    Abstract: The present disclosure generally relates to apparatus and methods for symmetry in electrical field, gas flow and thermal distribution in a processing chamber to achieve process uniformity. Embodiment of the present disclosure includes a plasma processing chamber having a plasma source, a substrate support assembly and a vacuum pump aligned along the same central axis to create substantially symmetrical flow paths, electrical field, and thermal distribution in the plasma processing chamber resulting in improved process uniformity and reduced skew.
    Type: Application
    Filed: February 2, 2015
    Publication date: August 6, 2015
    Inventors: Andrew NGUYEN, Yogananda SARODE VISHWANATH, Tom K. CHO
  • Patent number: 9089007
    Abstract: Methods and substrate processing systems are provided for controlling substrate heating efficiency and generating a desired temperature profile on the surface of a substrate when the substrate is disposed on a substrate support surface of a substrate support assembly. The substrate support assembly is provided with minimum software control and hardware requirement and includes a heating element comprised of multiple heating elements sections. The heating element is connected to a power source for adjusting the temperature outputs of the multiple heating element sections and providing adjustable multi-heating zones and desired temperature distribution over the substrate support surface of the substrate support assembly within a process chamber.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: July 21, 2015
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Yao-Hung Yang, Jeonghoon Oh, Frank F. Hooshdaran, Tom K. Cho, Tao Hou
  • Publication number: 20150158775
    Abstract: A method of manufacturing an article includes providing a component for an etch reactor. Ion beam sputtering with ion assisted deposition (IBS-IAD) is then performed to deposit a protective layer on at least one surface of the component, wherein the protective layer is a plasma resistant film having a thickness of less than 1000 ?m.
    Type: Application
    Filed: December 5, 2014
    Publication date: June 11, 2015
    Inventors: Jennifer Y. Sun, Vahid Firouzdor, Biraja Prasad Kanungo, Tom K. Cho, Vedapuram S. Achutharaman, Ying Zhang
  • Publication number: 20150107618
    Abstract: A gas comprising oxygen is supplied to a plasma source. A plasma jet comprising oxygen plasma particles is generated from the gas. A contaminant is removed from the component using the oxygen plasma particles.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 23, 2015
    Applicant: Applied Materials, Inc.
    Inventors: Jennifer Y. Sun, Vahid Firouzdor, Tom K. Cho, Ying Zhang
  • Publication number: 20140374024
    Abstract: Embodiments of an apparatus for removing particles from a twin chamber processing system are provided herein. In some embodiments, an apparatus for removing particles from a twin chamber processing system includes a remote plasma system; and a plurality of conduits fluidly coupling the remote plasma system to each process chamber of a twin chamber processing system to provide a plasma to an exhaust volume of each process chamber, wherein each conduit of the plurality of conduits has an outlet disposed along a boundary of the respective exhaust volumes.
    Type: Application
    Filed: August 8, 2013
    Publication date: December 25, 2014
    Applicant: APPLIED MATERIALS, INC.
    Inventors: ANDREW NGUYEN, TOM K. CHO, KARTIK RAMASWAMY, YOGANANDA SARODE VISHWANATH
  • Publication number: 20140366953
    Abstract: Methods and apparatus for particle reduction in throttle gate valves used in substrate process chambers are provided herein. In some embodiments, a gate valve for use in a process chamber includes a body having an opening disposed therethrough from a first surface to an opposing second surface of the body; a pocket extending into the body from a sidewall of the opening; a gate movably disposed within the pocket between a closed position that seals the opening and an open position that reveals the opening and disposes the gate completely within the pocket; and a plurality of gas ports disposed in the gate valve configured to direct a gas flow into a portion of the gate valve fluidly coupled to the opening.
    Type: Application
    Filed: May 13, 2014
    Publication date: December 18, 2014
    Applicant: APPLIED MATERIALS, INC.
    Inventors: JARED AHMAD LEE, DMITRY LUBOMIRSKY, MARTIN JEFF SALINAS, ANDREW NGUYEN, TOM K. CHO, ERIC A. ENGLHARDT, FERNANDO SILVEIRA
  • Patent number: 8911151
    Abstract: A bushing assembly for supporting a substrate within a processing chamber is generally provided. In one aspect, the bushing assembly comprises a tubular body having an outer perimeter and an aperture extending therethrough, a first ring having a first inner edge, the first ring disposed in the aperture in an upper portion of the tubular body, and a second ring having a second inner edge, the second ring disposed in the aperture in a lower portion of the tubular body. In another aspect, the first inner edge has a first radius of curvature, and the second inner edge has a second radius of curvature. In another aspect, a first inner edge diameter, a second inner edge diameter, the first radius of curvature, and the second radius of curvature are selected such that a support pin extending through the aperture contacts the bushing assembly on at most two points.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: December 16, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Tao Hou, Jeonghoon Oh, Tom K. Cho, Andrzej Matlosz, Frank F. Hooshdaran, Yao-Hung Yang
  • Publication number: 20140272211
    Abstract: Embodiments of the present disclosure generally provide various apparatus and methods for reducing particles in a semiconductor processing chamber. One embodiment of present disclosure provides a vacuum screen assembly disposed over a vacuum port to prevent particles generated by the vacuum pump from entering substrate processing regions. Another embodiment of the present disclosure provides a perforated chamber liner around a processing region of the substrate. Another embodiment of the present disclosure provides a gas distributing chamber liner for distributing a cleaning gas around the substrate support under the substrate supporting surface.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Inventors: Andrew NGUYEN, Bradley HOWARD, Shahid RAUF, Ajit BALAKRISHNA, Tom K. CHO, Kenneth S. COLLINS, Anand KUMAR, Michael D. WILLWERTH, Yogananda S. VISHWANATH
  • Publication number: 20130284721
    Abstract: Methods and substrate processing systems are provided for controlling substrate heating efficiency and generating a desired temperature profile on the surface of a substrate when the substrate is disposed on a substrate support surface of a substrate support assembly. The substrate support assembly is provided with minimum software control and hardware requirement and includes a heating element comprised of multiple heating elements sections. The heating element is connected to a power source for adjusting the temperature outputs of the multiple heating element sections and providing adjustable multi-heating zones and desired temperature distribution over the substrate support surface of the substrate support assembly within a process chamber.
    Type: Application
    Filed: February 14, 2013
    Publication date: October 31, 2013
    Inventors: Yao-Hung Yang, Jeonghoon Oh, Frank F. Hooshdaran, Tom K. Cho, Tao Hou
  • Publication number: 20130287529
    Abstract: A substrate processing system with independent substrate placement capability to two or more substrate support assemblies is provided. Two different sets of fixed-length lift pins are disposed on two or more substrate support lift pin assemblies of two or more process chambers, where the length of each lift pin in one process chamber is different from the length of each lift pin in another process chamber. The substrate processing system includes simplified mechanical substrate support lift pin mechanisms and minimum accessory parts cooperating with a substrate transfer mechanism (e.g., a transfer robot) for efficient and independent loading, unloading, and transfer of one or more substrates between two or more processing regions in a twin chamber or between two or more process chambers. A method for positioning one or more substrates to be loaded, unloaded, or processed independently or simultaneously in two or more processing regions or process chambers is provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 31, 2013
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Yao-Hung YANG, Jeonghoon OH, Frank F. HOOSHDARAN, Tom K. CHO, Tao HOU, Yuanhung GUO
  • Publication number: 20130012030
    Abstract: An apparatus and methods for depositing amorphous and microcrystalline silicon films during the formation of solar cells are provided. In one embodiment, a method and apparatus is provided for generating and introducing hydrogen radicals directly into a processing region of a processing chamber for reaction with a silicon-containing precursor for film deposition on a substrate. In one embodiment, the hydrogen radicals are generated by a remote plasma source and directly introduced into the processing region via a line of sight path to minimize the loss of energy by the hydrogen radicals prior to reaching the processing region.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 10, 2013
    Applicant: Applied Materials, Inc.
    Inventors: Annamalai Lakshmanan, Jianshe Tang, Dustin W. Ho, Francimar C. Schmitt, Alan Tso, Tom K. Cho, Brian Sy-Yuan Shieh, Hari K. Ponnekanti, Chris Eberspacher, Zheng Yuan
  • Publication number: 20130004681
    Abstract: Embodiments of the present invention provide a plasma processing chamber having a mini blocker plate for delivering processing gas to a processing chamber and methods to use the mini blocker plate to improve uniformity. The blocker plate assembly comprising a mini blocker plate having a plurality of through holes, and two or more standoff spacers configured to position the mini blocker plate at a distance away from a blocker plate.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Alan Tso, Jeonghoon Oh, Yi Zheng, Tom K. Cho, Zheng Yuan, Lin Zhang, Qunhua Wang, Robin L. Tiner
  • Publication number: 20120171852
    Abstract: Methods for forming and treating a silicon containing layer in a thin film transistor structure or solar cell devices are provided. In one embodiment, a method for forming a silicon containing layer on a substrate includes providing a substrate into a processing chamber, providing a gas mixture having a silicon containing gas into the processing chamber, providing a hydrogen containing gas from a remote plasma source coupled to the processing chamber, applying a RF power less than 17.5 mWatt/cm2 to the processing chamber, and forming a silicon containing layer on the substrate.
    Type: Application
    Filed: August 2, 2010
    Publication date: July 5, 2012
    Inventors: Zheng Yuan, Mandar B. Pandit, Francimar C. Schmitt, Yi Zheng, Fan Yang, Lipan Li, Alan Tso, Dustin W. Ho, Tom K. Cho, Randhir Thakur
  • Patent number: 8203126
    Abstract: Embodiments of the invention relate generally to an ultraviolet (UV) cure chamber for curing a dielectric material disposed on a substrate and to methods of curing dielectric materials using UV radiation. A substrate processing tool according to one embodiment comprises a body defining a substrate processing region; a substrate support adapted to support a substrate within the substrate processing region; an ultraviolet radiation lamp spaced apart from the substrate support, the lamp configured to transmit ultraviolet radiation to a substrate positioned on the substrate support; and a motor operatively coupled to rotate at least one of the ultraviolet radiation lamp or substrate support at least 180 degrees relative to each other.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: June 19, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Juan Carlos Rocha-Alvarez, Thomas Nowak, Dale R. Du Bois, Sanjeev Baluja, Scott A. Hendrickson, Dustin W. Ho, Andrzei Kaszuba, Tom K. Cho
  • Publication number: 20110164955
    Abstract: Embodiments of a method and apparatus for processing large area substrates including a translational wear plate and/or bushing assembly are provided for reducing the stress on a lift pin used to space substrates from a substrate support in a processing or other type of chamber. In another embodiment, an apparatus for processing substrates includes processing chamber comprising a substrate support disposed in a chamber body. A bushing assembly is disposed in the substrate support. A lift pin is disposed through the bushing assembly. A wear plate is provided that is coupled to the chamber body and aligned with the lift pin. The wear plate is movable laterally relative to a centerline of the chamber body to accommodate lateral motion of the lift pin when contacting the wear plate.
    Type: Application
    Filed: July 13, 2010
    Publication date: July 7, 2011
    Applicant: APPLIED MATERIALS,INC.
    Inventors: John M. White, Jeonghoon Oh, Tom K. Cho, Silja James, Uday Pai, Oscar Lopez, Alexander S. Polyak
  • Publication number: 20110033620
    Abstract: A method and apparatus for a lift pin is described. In one embodiment, a lift pin head is described. The lift pin head includes a base member having a body made of a first material having a first coefficient of thermal expansion, and a tip disposed on the base member, the base member having a body made of a second material that is flexible at room temperature and having a second coefficient of thermal expansion, the first coefficient of thermal expansion being less than the second coefficient of thermal expansion.
    Type: Application
    Filed: August 2, 2010
    Publication date: February 10, 2011
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Alexander S. Polyak, Tom K. Cho, Oscar Gomez
  • Publication number: 20100285240
    Abstract: Embodiments of the invention relate generally to an ultraviolet (UV) cure chamber for curing a dielectric material disposed on a substrate and to methods of curing dielectric materials using UV radiation. A substrate processing tool according to one embodiment comprises a body defining a substrate processing region; a substrate support adapted to support a substrate within the substrate processing region; an ultraviolet radiation lamp spaced apart from the substrate support, the lamp configured to transmit ultraviolet radiation to a substrate positioned on the substrate support; and a motor operatively coupled to rotate at least one of the ultraviolet radiation lamp or substrate support at least 180 degrees relative to each other.
    Type: Application
    Filed: July 22, 2010
    Publication date: November 11, 2010
    Applicant: Applied Materials, Inc
    Inventors: Juan Carlos Rocha-Alvarez, Thomas Nowak, Dale R. Du Bois, Sanjeev Baluja, Scott A. Hendrickson, Dustin W. Ho, Andrzei Kaszuba, Tom K. Cho
  • Patent number: 7829145
    Abstract: Apparatus and methods for distributing gases into a processing chamber are disclosed. In one embodiment, the method for processing a substrate includes delivering a processing gas into a chemical vapor deposition chamber through a first gas pathway that includes flow through a first plurality of apertures in a blocker plate, the blocker plate creating a pressure drop of at least approximately 0.8 torr thereacross, reacting the processing gas to deposit a material on a substrate surface, removing the substrate from the chamber, delivering a cleaning gas into the chamber through a second gas pathway around the blocker plate bypassing the blocker plate and through a second plurality of apertures formed in the blocker plate, and reacting the cleaning gases with deposits within the chamber to etch the deposits from the chamber.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: November 9, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Ganesh Balasubramanian, Juan Carlos Rocha-Alvarez, Tom K. Cho, Daemian Raj
  • Patent number: 7777198
    Abstract: Embodiments of the invention relate generally to an ultraviolet (UV) cure chamber for curing a dielectric material disposed on a substrate and to methods of curing dielectric materials using UV radiation. A substrate processing tool according to one embodiment comprises a body defining a substrate processing region; a substrate support adapted to support a substrate within the substrate processing region; an ultraviolet radiation lamp spaced apart from the substrate support, the lamp configured to transmit ultraviolet radiation to a substrate positioned on the substrate support; and a motor operatively coupled to rotate at least one of the ultraviolet radiation lamp or substrate support at least 180 degrees relative to each other.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: August 17, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Juan Carlos Rocha-Alvarez, Thomas Nowak, Dale R. Du Bois, Sanjeev Baluja, Scott A. Hendrickson, Dustin W. Ho, Andrzei Kaszuba, Tom K. Cho
  • Publication number: 20100178137
    Abstract: Systems, methods and apparatus are provided for moving substrates in electronic device manufacturing. In some aspects, end effectors having a base portion and at least three pads are provided. Each of the pads has a contact surface, and at least one of the contact surfaces has a curved shape. A substrate supported by the end effector may be moved at a relatively high lateral g-force without significant slipping relative to the pads. Additional aspects are provided.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Applicant: Applied Materials, Inc.
    Inventors: Prudhvi R. Chintalapati, Satish Sundar, Boris Axelrod, Mario Dave Silvetti, Tom K. Cho, Jeffrey A. Brodine, Jason K. Foster, Edward Ng