Patents by Inventor Eric Strang

Eric Strang 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: 7540305
    Abstract: A chemical processing system includes a mixing chamber coupled to the chemical processing system. A stream of first process gas and a stream of second process gas are introduced into the mixing chamber. The stream of first process gas and the stream of second process gas interact with each other to form a mixed process gas, which is supplied to the substrate for processing thereof. A method of mixing process gas in a mixing chamber of a chemical processing system is provided. The method includes injecting a stream of first process gas and a stream of second process gas into the mixing chamber, causing the streams of the first process gas and the second process gas to interact and mixing the first process gas and the second process gas in the mixing chamber to form a mixed process gas. A mixing system is also provided.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: June 2, 2009
    Assignee: Tokyo Electron Limited
    Inventor: Eric Strang
  • Patent number: 7462243
    Abstract: A chemical processing system includes a processing chamber containing a chemical processing region and a gas injection system. The gas injection system includes at least one first gas injection orifice and at least one second gas injection orifice in communication with the chemical processing region to expose a substrate to mixed first and second process gases. Other embodiments of the chemical processing system can include a sensor to sense a mixing rate of the process gases or a shroud defining a portion of the at least one first gas injection orifice to control mixing of the process gases. A method of mixing process gas in a chemical processing region of a chemical processing system is provided in which a first process gas and a second process gas are injected into the chemical processing region and mixed. A mixture rate is sensed and used to control the mixing.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: December 9, 2008
    Assignee: Tokyo Electron Limited
    Inventors: Arthur H Laflamme, Jr., Jay Wallace, Eric Strang
  • Publication number: 20080092818
    Abstract: A thermally zoned substrate holder including a substantially cylindrical base having top and bottom surfaces configured to support a substrate. A plurality of temperature control elements are disposed within the base. An insulator thermally separates the temperature control elements. The insulator is made from an insulting material having a lower coefficient of thermal conductivity than the base (e.g., a gas- or vacuum-filled chamber).
    Type: Application
    Filed: December 20, 2007
    Publication date: April 24, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Steven Fink, Eric Strang
  • Publication number: 20070204907
    Abstract: An apparatus and method for gas injection sequencing in order to increase the gas injection total pressure while satisfying an upper limit to the process gas flow rate, thereby achieving gas flow uniformity during a sequence cycle and employing practical orifice configurations. The gas injection system includes a gas injection electrode having a plurality of regions, through which process gas flows into the process chamber. The gas injection system further includes a plurality of gas injection plenums, each independently coupled to one of the aforesaid regions and a plurality of gas valves having an inlet end and an outlet end, where the outlet end is independently coupled to one of the aforesaid plurality of gas injection plenums. The gas injection system includes a controller coupled to the plurality of gas valves for sequencing the flow of process gas through the aforesaid plurality of regions.
    Type: Application
    Filed: May 10, 2007
    Publication date: September 6, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Eric Strang
  • Publication number: 20070192059
    Abstract: A method for monitoring consumption of a component, including the steps of emitting a radiation beam onto a first area of the component and detecting a portion of the radiation beam that is refracted by the component. A radiation level signal is generated based at least on a strength of the detected portion of the radiation beam, and a thickness of the component is determined based on the radiation level signal. The thickness of the component is compared to a predetermined thickness value, and a status signal is generated when the comparing step determines that the thickness of the component is substantially equal to or below the predetermined thickness value. When the comparing step determines that the thickness of the component is greater than the predetermined thickness value, the component is exposed to a process that can erode at least a portion of the component.
    Type: Application
    Filed: April 18, 2007
    Publication date: August 16, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Andrej Mitrovic, Eric Strang
  • Patent number: 7199327
    Abstract: An arc suppression system for plasma processing comprising at least one sensor coupled to the plasma processing system, and a controller coupled to the at least one sensor. The controller provides at least one algorithm for determining a state of plasma in contact with a substrate using at least one signal generated from the at least one sensor and controlling a plasma processing system in order to suppress an arcing event. When voltage differences between sensors exceed a target difference, the plasma processing system is determined to be susceptible to arcing. During this condition, an operator is notified, and decision can be made to either continue processing, modify processing, or discontinue processing.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: April 3, 2007
    Assignee: Tokyo Electron Limited
    Inventors: Paul Moroz, Eric Strang
  • Publication number: 20070068625
    Abstract: A plasma processing system includes a processing chamber, a substrate holder configured to hold a substrate for plasma processing, and a gas injection assembly. The gas injection assembly includes a first evacuation port located substantially in a center of the gas injection assembly and configured to evacuate gases from a central region of the substrate, and a gas injection system configured to inject gases in the process chamber. The plasma processing system also includes a second evacuation port configured to evacuate gases from a peripheral region surrounding the central region of the substrate.
    Type: Application
    Filed: September 23, 2005
    Publication date: March 29, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Merritt Funk, David Horak, Eric Strang, Lee Chen
  • Publication number: 20070020776
    Abstract: A wall film monitoring system includes first and second microwave mirrors in a plasma processing chamber each having a concave surface. The concave surface of the second mirror is oriented opposite the concave surface of the first mirror. A power source is coupled to the first mirror and configured to produce a microwave signal. A detector is coupled to at least one of the first mirror and the second mirror and configured to measure a vacuum resonance voltage of the microwave signal. A control system is connected to the detector that compares a first measured voltage and a second measured voltage and determines whether the second voltage exceeds a threshold value. A method of monitoring wall film in a plasma chamber includes loading a wafer in the chamber, setting a frequency of a microwave signal output to a resonance frequency, and measuring a first vacuum resonance voltage of the microwave signal.
    Type: Application
    Filed: September 8, 2006
    Publication date: January 25, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Eric Strang, Richard Parsons
  • Publication number: 20060138082
    Abstract: A plasma processing device comprising a gas injection system is described, wherein the gas injection system comprises a gas injection assembly body, a consumable gas inject plate coupled to the gas injection assembly body, and a pressure sensor coupled to a gas injection plenum formed by the gas injection system body and the consumable gas inject plate. The gas injection system is configured to receive a process gas from at least one mass flow controller and distribute the process gas to the processing region within the plasma processing device, and the pressure sensor is configured to measure a gas injection pressure within the gas injection plenum. A controller, coupled to the pressure sensor, is configured to receive a signal from the pressure sensor and to determine a state of the consumable gas inject plate based upon the signal.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 29, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Eric Strang
  • Publication number: 20060130966
    Abstract: A method and system is described for treating a substrate with a supercritical fluid using a high temperature process. For example, when the supercritical fluid includes carbon dioxide in a supercritical state, the high temperature process is performed at a temperature approximately equal to and exceeding 80 degrees C., which is greater than the critical temperature of approximately 31 degrees C.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 22, 2006
    Inventors: Darko Babic, Eric Strang
  • Publication number: 20060093746
    Abstract: A high pressure processing system including a chamber configured to house a substrate. A fluid introduction system includes at least one composition supply system configured to supply a first composition and a second composition, and at least one fluid supply system configured to supply a fluid. The fluid supply system is configured to alternately and discontinuously introduce the first composition and the second composition to the chamber within the fluid.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 4, 2006
    Applicant: Tokyo Electron Limited
    Inventor: Eric Strang
  • Publication number: 20060090850
    Abstract: A chemical processing system includes a processing chamber containing a chemical processing region and a gas injection system. The gas injection system includes at least one first gas injection orifice and at least one second gas injection orifice in communication with the chemical processing region to expose a substrate to mixed first and second process gases. Other embodiments of the chemical processing system can include a sensor to sense a mixing rate of the process gases or a shroud defining a portion of the at least one first gas injection orifice to control mixing of the process gases. A method of mixing process gas in a chemical processing region of a chemical processing system is provided in which a first process gas and a second process gas are injected into the chemical processing region and mixed. A mixture rate is sensed and used to control the mixing.
    Type: Application
    Filed: September 23, 2005
    Publication date: May 4, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Arthur Laflamme, Jay Wallace, Eric Strang
  • Publication number: 20060081564
    Abstract: An arc suppression system for plasma processing comprising at least one sensor coupled to the plasma processing system, and a controller coupled to the at least one sensor. The controller provides at least one algorithm for determining a state of plasma in contact with a substrate using at least one signal generated from the at least one sensor and controlling a plasma processing system in order to suppress an arcing event. When voltage differences between sensors exceed a target difference, the plasma processing system is determined to be susceptible to arcing. During this condidtion, an operator is notified, and decision can be made to either continue processing, modify processing, or discontinue processing.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 20, 2006
    Applicant: Tokyo Electron Limited
    Inventors: Paul Moroz, Eric Strang
  • Publication number: 20060060303
    Abstract: A plasma processing system includes a chamber containing a plasma processing region and a chuck constructed and arranged to support a substrate within the chamber in the processing region. The plasma processing system further includes at least one gas injection passage in communication with the chamber and configured to facilitate removal of particles from the chamber by passing purge gas therethrough. In one embodiment, the plasma processing system can include an electrode configured to attract or repel particles in the chamber by electrostatic force when the electrode is biased with DC or RF power. A method of processing a substrate in a plasma processing system includes removing particles in a chamber of the plasma processing system by supplying purge gas through at least one gas injection passage in communication with the chamber.
    Type: Application
    Filed: September 28, 2005
    Publication date: March 23, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Steven Fink, Paul Moroz, Eric Strang, Andrej Mitrovic
  • Publication number: 20060032287
    Abstract: The present invention provides a diagnostic system for plasma processing, wherein the diagnostic system comprises a multi-modal resonator, a power source, a detector, and a controller. The controller is coupled to the power source and the detector and it is configured to provide a man-machine interface for performing several monitoring and controlling functions associated with the diagnostic system including: a Gunn diode voltage monitor, a Gunn diode current monitor, a varactor diode voltage monitor, a detector voltage monitor, a varactor voltage control, a varactor voltage sweep control, a resonance lock-on control, a graphical user control, and an electron density monitor. The diagnostic system can further provide a remote controller coupled to the controller and configured to provide a remote man-machine interface. The remote man-machine interface. The remote man-machine interface can provide a graphical user interface in order to permit remote control of the diagnostic system by an operator.
    Type: Application
    Filed: July 23, 2003
    Publication date: February 16, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Eric Strang, Richard Parsons, Jody Goldfield
  • Publication number: 20050284370
    Abstract: A processing system for performing atomic layer deposition (ALD) including a process chamber, a substrate holder provided within the process chamber, and a gas injection system configured to supply a first process gas and a second process gas to the process chamber. The gas injection system is configured to introduce the first process gas and the second process gas to the processing chamber at a first location and a second location, wherein at least one of the first process gas and the second process gas is alternatingly and sequentially introduced between the first location and the second location.
    Type: Application
    Filed: June 25, 2004
    Publication date: December 29, 2005
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Eric Strang
  • Publication number: 20050270895
    Abstract: A chemical processing system includes a mixing chamber coupled to the chemical processing system. A stream of first process gas and a stream of second process gas are introduced into the mixing chamber. The stream of first process gas and the stream of second process gas interact with each other to form a mixed process gas, which is supplied to the substrate for processing thereof. A method of mixing process gas in a mixing chamber of a chemical processing system is provided. The method includes injecting a stream of first process gas and a stream of second process gas into the mixing chamber, causing the streams of the first process gas and the second process gas to interact and mixing the first process gas and the second process gas in the mixing chamber to form a mixed process gas. A mixing system is also provided.
    Type: Application
    Filed: August 11, 2005
    Publication date: December 8, 2005
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Eric Strang
  • Publication number: 20050235917
    Abstract: An apparatus for monitoring film deposition on a chamber wall in a process chamber. The apparatus includes a surface acoustic wave device provided on the chamber wall. The surface acoustic wave device is actuated to achieve a resonance frequency, and the resonance frequency produced is detected to determine whether a critical thickness of film on the wall of the chamber has been achieved, where an amount of decrease in the resonance frequency is proportional to a thickness of film on the chamber wall. The process chamber is cleaned when the resonance frequency detected falls within a first predetermined range.
    Type: Application
    Filed: May 29, 2003
    Publication date: October 27, 2005
    Applicant: Tokyo Electron Limited
    Inventors: Jim Fordemwalt, Eric Strang, Steven Fink
  • Publication number: 20050221021
    Abstract: A plasma processing system for performing atomic layer deposition (ALD) including a process chamber, a substrate holder provided within the process chamber, and a gas injection system configured to supply a first gas and a second gas to the process chamber. The system includes a controller that controls the gas injection system to continuously flow a first gas flow to the process chamber and to pulse a second gas flow to the process chamber at a first time. The controller pulses a RF power to the substrate holder at a second time. A method of operating a plasma processing system is provided that includes adjusting a background pressure in a process chamber, where the background pressure is established by flowing a first gas flow using a gas injection system, and igniting a processing plasma in the process chamber. The method includes pulsing a second gas flow using the gas injection system at a first time, and pulsing a RF power to a substrate holder at a second time.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 6, 2005
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Eric Strang
  • Publication number: 20050189069
    Abstract: A plasma processing system and method for operating a diagnostic system in conjunction with a plasma processing system are provided. The diagnostic system is in communication with a plasma processing chamber of the plasma processing system and includes a diagnostic sensor to detect a plasma process condition. The diagnostic system is configured to substantially reduce contamination of the diagnostic sensor. The method includes substantially reducing contamination of the diagnostic sensor and detecting a condition of the plasma process and/or a substrate in the processing chamber.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 1, 2005
    Applicant: Tokyo Electron Limited
    Inventors: Audunn Ludviksson, Eric Strang, Andrej Mitrovic