Patents by Inventor Arul Dhas

Arul Dhas 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: 12522927
    Abstract: A substrate processing system includes an upper electrode and a lower electrode arranged in a processing chamber. A gas delivery system is configured to selectively deliver at least one of a precursor gas, one or more deposition carrier gases, and a post deposition purge gas. An RF generating system is configured to deposit film on a substrate by generating RF plasma in the processing chamber between the upper electrode and the lower electrode while the precursor gas and the one or more deposition carrier gases are delivered by the gas delivery system. A bias generating circuit is configured to selectively supply a DC bias voltage to one of the upper electrode and the lower electrode while the post deposition purge gas is delivered by the gas delivery system. The post deposition purge gas that is delivered by the gas delivery system includes a reactant gas.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: January 13, 2026
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Arul Dhas, Kareem Boumatar, Christopher Ramsayer
  • Publication number: 20200332418
    Abstract: A substrate processing system includes an upper electrode and a lower electrode arranged in a processing chamber. A gas delivery system is configured to selectively deliver at least one of a precursor gas, one or more deposition carrier gases, and a post deposition purge gas. An RF generating system is configured to deposit film on a substrate by generating RF plasma in the processing chamber between the upper electrode and the lower electrode while the precursor gas and the one or more deposition carrier gases are delivered by the gas delivery system. A bias generating circuit is configured to selectively supply a DC bias voltage to one of the upper electrode and the lower electrode while the post deposition purge gas is delivered by the gas delivery system. The post deposition purge gas that is delivered by the gas delivery system includes a reactant gas.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 22, 2020
    Inventors: Arul DHAS, Kareem BOUMATAR, Christopher RAMSAYER
  • Patent number: 10704149
    Abstract: A method for processing a substrate in a substrate processing system includes selectively delivering at least one of a precursor, a deposition carrier gas, and a post deposition purge gas to a processing chamber. The method includes depositing film on the substrate by generating radio frequency (RF) plasma in the processing chamber between an upper electrode and a lower electrode while supplying an RF voltage to one of the upper electrode and the lower electrode and while the precursor and the deposition carrier gas is delivered. The method includes selectively supplying a direct current (DC) bias voltage to the upper electrode or the lower electrode; moving the substrate relative to a pedestal supporting the substrate while generating the DC bias voltage; and delivering the post deposition purge gas while supplying at least a portion of the DC bias voltage to the upper electrode or the lower electrode.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: July 7, 2020
    Assignee: Lam Research Corporation
    Inventors: Arul Dhas, Kareem Boumatar, Christopher Ramsayer
  • Publication number: 20180347046
    Abstract: A method for processing a substrate in a substrate processing system includes selectively delivering at least one of a precursor, a deposition carrier gas, and a post deposition purge gas to a processing chamber. The method includes depositing film on the substrate by generating radio frequency (RF) plasma in the processing chamber between an upper electrode and a lower electrode while supplying an RF voltage to one of the upper electrode and the lower electrode and while the precursor and the deposition carrier gas is delivered. The method includes selectively supplying a direct current (DC) bias voltage to the upper electrode or the lower electrode; moving the substrate relative to a pedestal supporting the substrate while generating the DC bias voltage; and delivering the post deposition purge gas while supplying at least a portion of the DC bias voltage to the upper electrode or the lower electrode.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 6, 2018
    Inventors: Arul Dhas, Kareem Boumatar, Christopher Ramsayer
  • Patent number: 10047438
    Abstract: A substrate processing system comprises an upper electrode and a lower electrode arranged in a processing chamber. A gas delivery system selectively delivers at least one of precursor, one or more deposition carrier gases and a post deposition purge gas. An RF generating system deposits film on the substrate by generating RF plasma in the processing chamber between the upper electrode and the lower electrode by supplying an RF voltage to one of the upper electrode and the lower electrode while the precursor and the one or more deposition carrier gases are delivered by the gas delivery system. A bias generating circuit selectively supplies a DC bias voltage to one of the upper electrode and the lower electrode while the post deposition purge gas is delivered by the gas delivery system. The post deposition purge gas that is delivered by the gas delivery system includes a molecular reactant gas.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: August 14, 2018
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Arul Dhas, Kareem Boumatar, Christopher James Ramsayer
  • Patent number: 9617637
    Abstract: Systems and methods for delivering liquid precursor in a substrate processing system include supplying liquid precursor using a first valve in fluid communication with a liquid precursor source; supplying purge gas using a second valve in fluid communication with a purge gas source; arranging a third valve having a first input port in fluid communication with an output port of the first valve and a second input port in fluid communication with an output port of the second valve; arranging an input port of a first divert injector valve in fluid communication with an output port of the third valve; and operating the first valve, the second valve, the third valve and the first divert injector valve in first, second, third and fourth modes.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: April 11, 2017
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Arul Dhas, Brannon Kelley, Jaswinder Guiliani, Akhil Singhal
  • Publication number: 20160017493
    Abstract: Systems and methods for delivering liquid precursor in a substrate processing system include supplying liquid precursor using a first valve in fluid communication with a liquid precursor source; supplying purge gas using a second valve in fluid communication with a purge gas source; arranging a third valve having a first input port in fluid communication with an output port of the first valve and a second input port in fluid communication with an output port of the second valve; arranging an input port of a first divert injector valve in fluid communication with an output port of the third valve; and operating the first valve, the second valve, the third valve and the first divert injector valve in first, second, third and fourth modes.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 21, 2016
    Inventors: Arul Dhas, Brannon Kelley, Jaswinder Guiliani, Akhil Singhal
  • Publication number: 20150354061
    Abstract: A substrate processing system comprises an upper electrode and a lower electrode arranged in a processing chamber. A gas delivery system selectively delivers at least one of precursor, one or more deposition carrier gases and a post deposition purge gas. An RF generating system deposits film on the substrate by generating RF plasma in the processing chamber between the upper electrode and the lower electrode by supplying an RF voltage to one of the upper electrode and the lower electrode while the precursor and the one or more deposition carrier gases are delivered by the gas delivery system. A bias generating circuit selectively supplies a DC bias voltage to one of the upper electrode and the lower electrode while the post deposition purge gas is delivered by the gas delivery system. The post deposition purge gas that is delivered by the gas delivery system includes a molecular reactant gas.
    Type: Application
    Filed: October 21, 2014
    Publication date: December 10, 2015
    Inventors: Arul Dhas, Kareem Boumatar, Christopher James Ramsayer