Patents by Inventor Michael Kwan

Michael Kwan 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: 20240085174
    Abstract: Methods and systems for feed-forward of multi-layer and multi-process information using XPS and XRF technologies are disclosed. In an example, a method of thin film characterization includes measuring first XPS and XRF intensity signals for a sample having a first layer above a substrate. The first XPS and XRF intensity signals include information for the first layer and for the substrate. The method also involves determining a thickness of the first layer based on the first XPS and XRF intensity signals. The method also involves combining the information for the first layer and for the substrate to estimate an effective substrate. The method also involves measuring second XPS and XRF intensity signals for a sample having a second layer above the first layer above the substrate. The second XPS and XRF intensity signals include information for the second layer, for the first layer and for the substrate.
    Type: Application
    Filed: August 21, 2023
    Publication date: March 14, 2024
    Applicant: NOVA MEASURING INSTRUMENTS INC.
    Inventors: Heath POIS, Wei T LEE, Lawrence BOT, Michael KWAN, Mark KLARE, Charles LARSON
  • Patent number: 11733035
    Abstract: Methods and systems for feed-forward of multi-layer and multi-process information using XPS and XRF technologies are disclosed. In an example, a method of thin film characterization includes measuring first XPS and XRF intensity signals for a sample having a first layer above a substrate. The first XPS and XRF intensity signals include information for the first layer and for the substrate. The method also involves determining a thickness of the first layer based on the first XPS and XRF intensity signals. The method also involves combining the information for the first layer and for the substrate to estimate an effective substrate. The method also involves measuring second XPS and XRF intensity signals for a sample having a second layer above the first layer above the substrate. The second XPS and XRF intensity signals include information for the second layer, for the first layer and for the substrate.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: August 22, 2023
    Assignee: NOVA MEASURING INSTRUMENTS INC.
    Inventors: Heath Pois, Wei T Lee, Lawrence Bot, Michael Kwan, Mark Klare, Charles Larson
  • Publication number: 20210372787
    Abstract: Methods and systems for feed-forward of multi-layer and multi-process information using XPS and XRF technologies are disclosed. In an example, a method of thin film characterization includes measuring first XPS and XRF intensity signals for a sample having a first layer above a substrate. The first XPS and XRF intensity signals include information for the first layer and for the substrate. The method also involves determining a thickness of the first layer based on the first XPS and XRF intensity signals. The method also involves combining the information for the first layer and for the substrate to estimate an effective substrate. The method also involves measuring second XPS and XRF intensity signals for a sample having a second layer above the first layer above the substrate. The second XPS and XRF intensity signals include information for the second layer, for the first layer and for the substrate.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 2, 2021
    Applicant: NOVA MEASURING INSTRUMENTS INC.
    Inventors: Heath POIS, Wei T. LEE, Lawrence BOT, Michael KWAN, Mark KLARE, Charles LARSON
  • Patent number: 9201030
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 1, 2015
    Assignee: ReVera, Incorporated
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Publication number: 20150069230
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Patent number: 8916823
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: December 23, 2014
    Assignee: ReVara, Incorporated
    Inventors: Paolo deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Publication number: 20140070096
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: November 14, 2013
    Publication date: March 13, 2014
    Inventors: Paolo deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Patent number: 8610059
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 17, 2013
    Assignee: ReVera, Incorporated
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Publication number: 20120318974
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: August 23, 2012
    Publication date: December 20, 2012
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Patent number: 8269167
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: September 18, 2012
    Assignee: Revera, Incorporated
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Publication number: 20110144787
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: February 4, 2011
    Publication date: June 16, 2011
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Patent number: 7884321
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: February 8, 2011
    Assignee: Revera, Incorporated
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
  • Publication number: 20080283743
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: July 25, 2008
    Publication date: November 20, 2008
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
  • Patent number: 7411188
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: August 12, 2008
    Assignee: ReVera Incorporated
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
  • Publication number: 20070010973
    Abstract: A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
    Type: Application
    Filed: August 31, 2005
    Publication date: January 11, 2007
    Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
  • Publication number: 20060162661
    Abstract: A dual channel gas distributor can simultaneously distribute plasma species of an first process gas and a non-plasma second process gas into a process zone of a substrate processing chamber. The gas distributor has a localized plasma box with a first inlet to receive a first process gas, and opposing top and bottom plates that are capable of being electrically biased relative to one another to define a localized plasma zone in which a plasma of the first process gas can be formed. The top plate has a plurality of spaced apart gas spreading holes to spread the first process gas across the localized plasma zone, and the bottom plate has a plurality of first outlets to distribute plasma species of the plasma of the first process gas into the process zone. A plasma isolated gas feed has a second inlet to receive the second process gas and a plurality of second outlets to pass the second process gas into the process zone.
    Type: Application
    Filed: January 22, 2005
    Publication date: July 27, 2006
    Inventors: Kee Jung, Dale Du Bois, Lun Tsuei, Lihua Huang, Martin Seamons, Soovo Sen, Reza Arghavani, Michael Kwan
  • Publication number: 20060154493
    Abstract: A method for forming sidewall spacers on a gate stack by depositing one or more layers of silicon containing materials using PECVD process(es) on a gate structure to produce a spacer having an overall k value of about 3.0 to about 5.0. The silicon containing materials may be silicon carbide, oxygen doped silicon carbide, nitrogen doped silicon carbide, carbon doped silicon nitride, nitrogen doped silicon oxycarbide, or combinations thereof. The deposition is performed in a plasma enhanced chemical vapor deposition chamber and the deposition temperature is less than 450° C. The sidewall spacers so produced provide good capacity resistance, as well as excellent structural stability and hermeticity.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 13, 2006
    Inventors: Reza Arghavani, Michael Kwan, Li-Qun Xia, Kang Yim
  • Patent number: 7052552
    Abstract: A method and apparatus are disclosed for depositing a dielectric film in a gap having an aspect ratio at least as large as 6:1. By cycling the gas chemistry of a high-density-plasma chemical-vapor-deposition system between deposition and etching conditions, the gap may be substantially 100% filled. Such filling is achieved by adjusting the flow rates of the precursor gases such that the deposition to sputtering ratio during the deposition phases is within certain predetermined limits.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: May 30, 2006
    Assignee: Applied Materials
    Inventors: Michael Kwan, Eric Liu
  • Publication number: 20060105106
    Abstract: A stressed film is formed on a substrate. The substrate is placed in a process zone and a plasma is formed of a process gas provided in the process zone, the process gas having silicon-containing gas and nitrogen-containing gas. A diluent gas such as nitrogen can also be added. The as-deposited stressed material can be exposed to ultraviolet radiation or electron beams to increase the stress value of the deposited material. In addition or in the alternative, a nitrogen plasma treatment can be used to increase the stress value of the material during deposition. Pulsed plasma methods to deposit stressed materials are also described.
    Type: Application
    Filed: February 11, 2005
    Publication date: May 18, 2006
    Inventors: Mihaela Balseanu, Kee Jung, Lihua Huang, Li-Qun Xia, Rongping Wang, Derek Witty, Lewis Stern, Martin Seamons, Hichem M'Saad, Michael Kwan
  • Publication number: 20050287771
    Abstract: Methods are provided for depositing amorphous carbon materials. In one aspect, the invention provides a method for processing a substrate including positioning the substrate in a processing chamber, introducing a processing gas into the processing chamber, wherein the processing gas comprises a carrier gas, hydrogen, and one or more precursor compounds, generating a plasma of the processing gas by applying power from a dual-frequency RF source, and depositing an amorphous carbon layer on the substrate.
    Type: Application
    Filed: February 24, 2005
    Publication date: December 29, 2005
    Inventors: Martin Seamons, Wendy Yeh, Sudha Rathi, Deenesh Padhi, Andy Luan, Sum-Yee Tang, Priya Kulkarni, Visweswaren Sivaramakrishnan, Bok Kim, Hichem M'Saad, Yuxiang Wang, Michael Kwan