Patents by Inventor Peter Knoot

Peter Knoot 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: 20030029859
    Abstract: A semiconductor processing system and method. The system includes an assembly of radiant energy sources and a programmable switch array configured to selectively deliver power to each radiant energy source based on a plurality of control signals. The method includes measuring the temperature at a plurality of regions on a substrate and controlling a plurality of radiant energy sources to correct any non-radial temperature discontinuities.
    Type: Application
    Filed: August 8, 2001
    Publication date: February 13, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Peter A. Knoot, Paul Steffas
  • Publication number: 20020136831
    Abstract: A method of forming an oxide on a substrate. According to the method of the present invention a substrate is placed in a chamber. An oxygen containing gas and a hydrogen containing gas are then fed into the chamber. The oxygen containing gas and the hydrogen containing gas are then caused to react with one another to form water vapor in the chamber. The water vapor then oxidizes the substrate.
    Type: Application
    Filed: May 7, 2002
    Publication date: September 26, 2002
    Inventors: Christian M. Gronet, Peter A. Knoot, Gary E. Miner, Guangcai Xing, David R. Lopes, Satheesh Kuppurao
  • Patent number: 6410456
    Abstract: A method of forming an oxide on a substrate. According to the method of the present invention a substrate is placed in a chamber. An oxygen containing gas and a hydrogen containing gas are then fed into the chamber. The oxygen containing gas and the hydrogen containing gas are then caused to react with one another to form water vapor in the chamber. The water vapor then oxidizes the substrate.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: June 25, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Christian M. Gronet, Peter A. Knoot, Gary E. Miner, Guangcai Xing, David R. Lopes, Satheesh Kuppurao
  • Patent number: 6395643
    Abstract: The invention provides a system for providing a flow of a short-lived, reactive process gas species into an RTP chamber without creating ionic species. An RTP chamber includes a transparent quartz window assembly. The window assembly has a first pane facing a wafer inside the RTP chamber. A second pane is positioned adjacent a heat lamp array on the outside of the RTP chamber. A window side wall joins the first and second panes at their peripheral edges to provide an internal chamber therebetween. A plurality of channels extend through the first pane from the internal chamber to the inside of the RTP chamber. A port communicates between the internal chamber and a process gas source. The window assembly also includes a reflective surface facing the internal chamber. An ultraviolet light source is positioned to illuminate process gas flowing through the window assembly with ultraviolet light such that the ultraviolet light alters the chemistry of the process gas.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: May 28, 2002
    Assignee: Applied Materials, Inc.
    Inventor: Peter A. Knoot
  • Patent number: 6187133
    Abstract: The invention provides a system for providing a flow of a short-lived, reactive process gas species into an RTP chamber without creating ionic species. An RTP chamber includes a transparent quartz window assembly. The window assembly has a first pane facing a wafer inside the RTP chamber. A second pane is positioned adjacent a heat lamp array on the outside of the RTP chamber. A window side wall joins the first and second panes at their peripheral edges to provide an internal chamber therebetween. A plurality of channels extend through the first pane from the internal chamber to the inside of the RTP chamber. A port communicates between the internal chamber and a process gas source. The window assembly also includes a reflective surface facing the internal chamber. An ultraviolet light source is positioned to illuminate process gas flowing through the window assembly with ultraviolet light such that the ultraviolet light alters the chemistry of the process gas.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: February 13, 2001
    Assignee: Applied Materials, Inc.
    Inventor: Peter A. Knoot
  • Patent number: 6179466
    Abstract: A method of correcting a temperature probe reading in a thermal processing chamber for heating a substrate, including the steps of heating the substrate to a process temperature and using a first, a second and a third probe to measure the temperature of the substrate. The first probe has a first effective reflectivity and the second probe has a second effective reflectivity. The first probe produces a first temperature indication, the second probe produces a second temperature indication and the third probe produces a third temperature indication. The first and second effective reflectivities may be different. From the first and second temperature indications, a corrected temperature reading for the first probe may be derived, wherein the corrected temperature reading is a more accurate indicator of an actual temperature of the substrate than an uncorrected readings produced by both the first and second probes.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: January 30, 2001
    Assignee: Applied Materials, Inc.
    Inventors: Bruce W. Peuse, Gary E. Miner, Mark Yam, Aaron Hunter, Peter Knoot, Jason Mershon
  • Patent number: 6164816
    Abstract: A technique and system for tuning temperature sensor readings in a thermal processing chamber includes determining an actual temperature profile for a substrate based on measurements of the substrate. A simulated temperature profile for the substrate is calculated using a respective interim temperature correction value for one or more temperature sensors associated with the chamber. A Gaussian-like distribution for thermal contributions from multiple radiation sources in the chamber can be used to simulate the temperature profile. The simulated temperature profile and the actual temperature profile are combined to form an estimated temperature profile. A final value for each respective temperature correction value is determined using an optimization algorithm which results in the estimated temperature profile being substantially uniform across the surface of the substrate.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: December 26, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Wolfgang Aderhold, Abhilash J. Mayur, Peter A. Knoot
  • Patent number: 6159866
    Abstract: A method of forming an oxide on a substrate. According to the method of the present invention a substrate is placed in a chamber. An oxygen containing gas and a hydrogen containing gas are then fed into the chamber. The oxygen containing gas and the hydrogen containing gas are then caused to react with one another to form water vapor in the chamber. The water vapor then oxidizes the substrate.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: December 12, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Christian M. Gronet, Peter A. Knoot, Gary E. Miner, Guangcai Xing, David R. Lopes, Satheesh Kuppurao
  • Patent number: 6130415
    Abstract: An apparatus for processing a semiconductor substrate mounted in a thermal processing chamber includes a heating system for heating the substrate, which includes lamps facing a front side of the substrate and a power supply system providing power to at least one of the lamps with a DC power component and an AC power component at a selected frequency. The AC power component is a selected fraction of the DC power component. The apparatus also has a sensor facing a back side of the substrate for providing a detected signal indicative of measured radiation from the back side of the substrate. A lock-in system provides a lock-in signal indicative of a magnitude of an AC component of the detected signal at the selected frequency in response to the detected signal and a reference signal at the selected frequency.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 10, 2000
    Assignee: Applied Materials, Inc.
    Inventor: Peter A. Knoot
  • Patent number: 6037273
    Abstract: A method of forming an oxide on a substrate. According to the method of the present invention a substrate is placed in a chamber. An oxygen containing gas and a hydrogen containing gas are then fed into the chamber. The oxygen containing gas and the hydrogen containing gas are then caused to react with one another to form water vapor in the chamber. The water vapor then oxidizes the substrate.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: March 14, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Christian M. Gronet, Peter A. Knoot, Gary E. Miner, Guangcai Xing, David R. Lopes, Satheesh Kuppurao