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).
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Publication number: 20240085174Abstract: 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: ApplicationFiled: August 21, 2023Publication date: March 14, 2024Applicant: NOVA MEASURING INSTRUMENTS INC.Inventors: Heath POIS, Wei T LEE, Lawrence BOT, Michael KWAN, Mark KLARE, Charles LARSON
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Patent number: 11733035Abstract: 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: GrantFiled: June 8, 2021Date of Patent: August 22, 2023Assignee: NOVA MEASURING INSTRUMENTS INC.Inventors: Heath Pois, Wei T Lee, Lawrence Bot, Michael Kwan, Mark Klare, Charles Larson
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Publication number: 20210372787Abstract: 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: ApplicationFiled: June 8, 2021Publication date: December 2, 2021Applicant: NOVA MEASURING INSTRUMENTS INC.Inventors: Heath POIS, Wei T. LEE, Lawrence BOT, Michael KWAN, Mark KLARE, Charles LARSON
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Patent number: 9201030Abstract: 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: GrantFiled: November 14, 2014Date of Patent: December 1, 2015Assignee: ReVera, IncorporatedInventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Publication number: 20150069230Abstract: 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: ApplicationFiled: November 14, 2014Publication date: March 12, 2015Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Patent number: 8916823Abstract: 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: GrantFiled: November 14, 2013Date of Patent: December 23, 2014Assignee: ReVara, IncorporatedInventors: Paolo deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Publication number: 20140070096Abstract: 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: ApplicationFiled: November 14, 2013Publication date: March 13, 2014Inventors: Paolo deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Patent number: 8610059Abstract: 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: GrantFiled: August 23, 2012Date of Patent: December 17, 2013Assignee: ReVera, IncorporatedInventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Publication number: 20120318974Abstract: 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: ApplicationFiled: August 23, 2012Publication date: December 20, 2012Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Patent number: 8269167Abstract: 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: GrantFiled: February 4, 2011Date of Patent: September 18, 2012Assignee: Revera, IncorporatedInventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Publication number: 20110144787Abstract: 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: ApplicationFiled: February 4, 2011Publication date: June 16, 2011Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Patent number: 7884321Abstract: 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: GrantFiled: July 25, 2008Date of Patent: February 8, 2011Assignee: Revera, IncorporatedInventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, David Stephen Ballance
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Publication number: 20080283743Abstract: 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: ApplicationFiled: July 25, 2008Publication date: November 20, 2008Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
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Patent number: 7411188Abstract: 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: GrantFiled: August 31, 2005Date of Patent: August 12, 2008Assignee: ReVera IncorporatedInventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
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Publication number: 20070010973Abstract: 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: ApplicationFiled: August 31, 2005Publication date: January 11, 2007Inventors: Paola deCecco, Bruno Schueler, David Reed, Michael Kwan, Dave Ballance
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Publication number: 20060162661Abstract: 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: ApplicationFiled: January 22, 2005Publication date: July 27, 2006Inventors: Kee Jung, Dale Du Bois, Lun Tsuei, Lihua Huang, Martin Seamons, Soovo Sen, Reza Arghavani, Michael Kwan
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Publication number: 20060154493Abstract: 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: ApplicationFiled: January 10, 2005Publication date: July 13, 2006Inventors: Reza Arghavani, Michael Kwan, Li-Qun Xia, Kang Yim
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Patent number: 7052552Abstract: 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: GrantFiled: August 2, 2001Date of Patent: May 30, 2006Assignee: Applied MaterialsInventors: Michael Kwan, Eric Liu
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Publication number: 20060105106Abstract: 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: ApplicationFiled: February 11, 2005Publication date: May 18, 2006Inventors: Mihaela Balseanu, Kee Jung, Lihua Huang, Li-Qun Xia, Rongping Wang, Derek Witty, Lewis Stern, Martin Seamons, Hichem M'Saad, Michael Kwan
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Publication number: 20050287771Abstract: 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: ApplicationFiled: February 24, 2005Publication date: December 29, 2005Inventors: 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