Patents by Inventor Ricky Marsh

Ricky Marsh 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: 20230354502
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Application
    Filed: June 23, 2023
    Publication date: November 2, 2023
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Patent number: 11716805
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: August 1, 2023
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Publication number: 20220117074
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Application
    Filed: December 21, 2021
    Publication date: April 14, 2022
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Patent number: 11224116
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: January 11, 2022
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Publication number: 20200253034
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Patent number: 10638593
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: April 28, 2020
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Publication number: 20190215942
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Application
    Filed: March 18, 2019
    Publication date: July 11, 2019
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Publication number: 20190116656
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 18, 2019
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Patent number: 10264663
    Abstract: A matchless plasma source is described. The matchless plasma source includes a controller that is coupled to a direct current (DC) voltage source of an agile DC rail to control a shape of an amplified square waveform that is generated at an output of a half-bridge transistor circuit. The matchless plasma source further includes the half-bridge transistor circuit used to generate the amplified square waveform to power an electrode, such as an antenna, of a plasma chamber. The matchless plasma source also includes a reactive circuit between the half-bridge transistor circuit and the electrode. The reactive circuit has a high-quality factor to negate a reactance of the electrode. There is no radio frequency (RF) match and an RF cable that couples the matchless plasma source to the electrode.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: April 16, 2019
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Yuhou Wang, Ricky Marsh, Alex Paterson
  • Patent number: 10056231
    Abstract: A match circuit includes the following: a power input circuit coupled to an RF source; an inner coil input circuit coupled between the power input circuit and an input terminal of an inner coil, the inner coil input circuit including an inductor and a capacitor coupled in series to the inductor, the inductor connecting to the power input circuit, and the capacitor connecting to the input terminal of the inner coil, a first node being defined between the power input circuit and the inner coil input circuit; an inner coil output circuit coupled between an output terminal of the inner coil and ground, the inner coil output circuit defining a direct pass-through connection to ground; an outer coil input circuit coupled between the first node and an input terminal of an outer coil; and an outer coil output circuit coupled between an output terminal of the outer coil and ground.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 21, 2018
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Ricky Marsh, Alex Paterson
  • Patent number: 9978565
    Abstract: In one embodiment, a plasma processing device may include a dielectric window, a vacuum chamber, an energy source, and at least one air amplifier. The dielectric window may include a plasma exposed surface and an air exposed surface. The vacuum chamber and the plasma exposed surface of the dielectric window can cooperate to enclose a plasma processing gas. The energy source can transmit electromagnetic energy through the dielectric window and form an elevated temperature region in the dielectric window. The at least one air amplifier can be in fluid communication with the dielectric window. The at least one air amplifier can operate at a back pressure of at least about 1 in-H2O and can provide at least about 30 cfm of air.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: May 22, 2018
    Assignee: Lam Research Corporation
    Inventors: Jon McChesney, Saravanapriyan Sriraman, Ricky Marsh, Alex Paterson, John Holland
  • Publication number: 20160163569
    Abstract: A Faraday shield and a plasma processing chamber incorporating the Faraday shield is are provided. The plasma chamber includes an electrostatic chuck for receiving a substrate, a dielectric window connected to a top portion of the chamber, the dielectric window disposed over the electrostatic chuck, and a Faraday shield. The Faraday shield is disposed inside of the chamber and defined between the electrostatic chuck and the dielectric window. The Faraday shield includes an inner zone having an inner radius range that includes a first and second plurality of slots and an outer zone having an outer radius range that includes a third plurality of slots. The inner zone is adjacent to the outer zone. The Faraday shield also includes a band ring separating the inner zone and the outer zone, such that the first and second plurality of slots do not connect with the third plurality of slots.
    Type: Application
    Filed: February 11, 2016
    Publication date: June 9, 2016
    Inventors: Maolin Long, Alex Paterson, Ricky Marsh, Ying Wu, John Drewery
  • Patent number: 9293353
    Abstract: A Faraday shield and a plasma processing chamber incorporating the Faraday shield is are provided. The plasma chamber includes an electrostatic chuck for receiving a substrate, a dielectric window connected to a top portion of the chamber, the dielectric window disposed over the electrostatic chuck, and a Faraday shield. The Faraday shield is disposed inside of the chamber and defined between the electrostatic chuck and the dielectric window. The Faraday shield includes an inner zone having an inner radius range that includes a first and second plurality of slots and an outer zone having an outer radius range that includes a third plurality of slots. The inner zone is adjacent to the outer zone. The Faraday shield also includes a band ring separating the inner zone and the outer zone, such that the first and second plurality of slots do not connect with the third plurality of slots.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: March 22, 2016
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Alex Paterson, Ricky Marsh, Ying Wu, John Drewery
  • Publication number: 20150235810
    Abstract: A match circuit includes the following: a power input circuit coupled to an RF source; an inner coil input circuit coupled between the power input circuit and an input terminal of an inner coil, the inner coil input circuit including an inductor and a capacitor coupled in series to the inductor, the inductor connecting to the power input circuit, and the capacitor connecting to the input terminal of the inner coil, a first node being defined between the power input circuit and the inner coil input circuit; an inner coil output circuit coupled between an output terminal of the inner coil and ground, the inner coil output circuit defining a direct pass-through connection to ground; an outer coil input circuit coupled between the first node and an input terminal of an outer coil; and an outer coil output circuit coupled between an output terminal of the outer coil and ground.
    Type: Application
    Filed: April 28, 2015
    Publication date: August 20, 2015
    Inventors: Maolin Long, Ricky Marsh, Alex Paterson
  • Patent number: 9059678
    Abstract: A match circuit includes the following: a power input circuit coupled to an RF source; an inner coil input circuit coupled between the power input circuit and an input terminal of an inner coil, the inner coil input circuit including an inductor and a capacitor coupled in series to the inductor, the inductor connecting to the power input circuit, and the capacitor connecting to the input terminal of the inner coil, a first node being defined between the power input circuit and the inner coil input circuit; an inner coil output circuit coupled between an output terminal of the inner coil and ground, the inner coil output circuit defining a direct pass-through connection to ground; an outer coil input circuit coupled between the first node and an input terminal of an outer coil; and an outer coil output circuit coupled between an output terminal of the outer coil and ground.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: June 16, 2015
    Assignee: Lam Research Corporation
    Inventors: Maolin Long, Ricky Marsh, Alex Paterson
  • Publication number: 20130186568
    Abstract: A Faraday shield and a plasma processing chamber incorporating the Faraday shield is are provided. The plasma chamber includes an electrostatic chuck for receiving a substrate, a dielectric window connected to a top portion of the chamber, the dielectric window disposed over the electrostatic chuck, and a Faraday shield. The Faraday shield is disposed inside of the chamber and defined between the electrostatic chuck and the dielectric window. The Faraday shield includes an inner zone having an inner radius range that includes a first and second plurality of slots and an outer zone having an outer radius range that includes a third plurality of slots. The inner zone is adjacent to the outer zone. The Faraday shield also includes a band ring separating the inner zone and the outer zone, such that the first and second plurality of slots do not connect with the third plurality of slots.
    Type: Application
    Filed: October 23, 2012
    Publication date: July 25, 2013
    Inventors: Maolin Long, Alex Paterson, Ricky Marsh, Ying Wu, John Drewery
  • Publication number: 20130135058
    Abstract: A match circuit includes the following: a power input circuit coupled to an RF source; an inner coil input circuit coupled between the power input circuit and an input terminal of an inner coil, the inner coil input circuit including an inductor and a capacitor coupled in series to the inductor, the inductor connecting to the power input circuit, and the capacitor connecting to the input terminal of the inner coil, a first node being defined between the power input circuit and the inner coil input circuit; an inner coil output circuit coupled between an output terminal of the inner coil and ground, the inner coil output circuit defining a direct pass-through connection to ground; an outer coil input circuit coupled between the first node and an input terminal of an outer coil; and an outer coil output circuit coupled between an output terminal of the outer coil and ground.
    Type: Application
    Filed: January 25, 2013
    Publication date: May 30, 2013
    Inventors: Maolin Long, Ricky Marsh, Alex Paterson
  • Publication number: 20130087283
    Abstract: In one embodiment, a plasma processing device may include a dielectric window, a vacuum chamber, an energy source, and at least one air amplifier. The dielectric window may include a plasma exposed surface and an air exposed surface. The vacuum chamber and the plasma exposed surface of the dielectric window can cooperate to enclose a plasma processing gas. The energy source can transmit electromagnetic energy through the dielectric window and form an elevated temperature region in the dielectric window. The at least one air amplifier can be in fluid communication with the dielectric window. The at least one air amplifier can operate at a back pressure of at least about 1 in-H2O and can provide at least about 30 cfm of air.
    Type: Application
    Filed: November 9, 2011
    Publication date: April 11, 2013
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Jon McChesney, Saravanapriyan Sriraman, Ricky Marsh, Alex Paterson, John Holland
  • Patent number: 6553853
    Abstract: A probe for measuring properties of plasma includes a shell, a contact extending through the shell and having a first connecting portion positioned in the shell, and a connector guide attached to a second connecting portion, the second connecting portion being detachably coupled to the first connecting portion. In another embodiment, a probe for measuring properties of plasma includes a shell, a contact extending through the shell, wiring extending from the contact and along an interior of the shell, and a coolant inlet line for injecting coolant into the interior of the shell for cooling the wiring. A method for cooling wiring positioned in an interior of a probe includes providing a coolant inlet line for injecting coolant into the interior of the probe and inserting the coolant inlet line in the interior of the probe such that the coolant cools the wiring.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: April 29, 2003
    Assignee: Lam Research Corporation
    Inventors: Ricky Marsh, Stanley Siu
  • Publication number: 20020066323
    Abstract: A probe for measuring properties of plasma includes a shell, a contact extending through the shell and having a first connecting portion positioned in the shell, and a connector guide attached to a second connecting portion, the second connecting portion being detachably coupled to the first connecting portion. In another embodiment, a probe for measuring properties of plasma includes a shell, a contact extending through the shell, wiring extending from the contact and along an interior of the shell, and a coolant inlet line for injecting coolant into the interior of the shell for cooling the wiring. A method for cooling wiring positioned in an interior of a probe includes providing a coolant inlet line for injecting coolant into the interior of the probe and inserting the coolant inlet line in the interior of the probe such that the coolant cools the wiring.
    Type: Application
    Filed: January 25, 2002
    Publication date: June 6, 2002
    Applicant: Lam Research Corporation
    Inventors: Ricky Marsh, Stanley Siu