Patents by Inventor Brian Duffy

Brian Duffy 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: 8126255
    Abstract: Various systems and methods for creating persistent data for a wafer and using persistent data for inspection-related functions are provided. One system includes a set of processor nodes coupled to a detector of an inspection system. Each of the processor nodes is configured to receive a portion of image data generated by the detector during scanning of a wafer. The system also includes an array of storage media separately coupled to each of the processor nodes. The processor nodes are configured to send all of the image data or a selected portion of the image data received by the processor nodes to the arrays of storage media such that all of the image data or the selected portion of the image data generated by the detector during the scanning of the wafer is stored in the arrays of the storage media.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: February 28, 2012
    Assignee: KLA-Tencor Corp.
    Inventors: Kris Bhaskar, Chetana Bhaskar, Ashok Kulkarni, Eliezer Rosengaus, Cecelia Campochiaro, Chris Maher, Brian Duffy, Aneesh Khullar, Alpa Kohli, Lalita A. Balasubramanian, Santosh Bhattacharyya, Mohan Mahadevan
  • Publication number: 20110320149
    Abstract: Computer-implemented methods, computer-readable media, and systems for selecting one or more parameters for inspection of a wafer are provided.
    Type: Application
    Filed: February 5, 2010
    Publication date: December 29, 2011
    Applicant: KLA-TENCOR CORPORATION
    Inventors: Chris Lee, Lisheng Gao, Tao Luo, Kenong Wu, Tommaso Torelli, Michael J. Van Riet, Brian Duffy
  • Publication number: 20110286656
    Abstract: Various methods and systems for utilizing design data in combination with inspection data are provided. One computer-implemented method for binning defects detected on a wafer includes comparing portions of design data proximate positions of the defects in design data space. The method also includes determining if the design data in the portions is at least similar based on results of the comparing step. In addition, the method includes binning the defects in groups such that the portions of the design data proximate the positions of the defects in each of the groups are at least to similar. The method further includes storing results of the binning step in a storage medium.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 24, 2011
    Applicant: KLA-TENCOR TECHNOLOGIES CORPORATION
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse
  • Patent number: 8041106
    Abstract: Methods and systems for detecting defects on a reticle are provided. One method includes printing a single die reticle in first areas of a wafer using different values of a parameter of a lithography process and at least one second area using a nominal value of the parameter. The method also includes acquiring first images of the first areas and second image(s) of the at least one second area. In addition, the method includes separately comparing the first images acquired for different first areas to at least one of the second image(s). The method further includes detecting defects on the reticle based on first portions of the first images in which variations in the first images compared to the at least one second image are greater than second portions of the first images and the first portions that are common to two or more of the first images.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: October 18, 2011
    Assignee: KLA-Tencor Corp.
    Inventors: Patrick Tung-Sing Pak, Wee-Teck Chia, Aaron Geurdon Chin, Irfan Malik, Brian Duffy
  • Patent number: 8041103
    Abstract: Various methods and systems for determining a position of inspection data in design data space are provided. One computer-implemented method includes determining a centroid of an alignment target formed on a wafer using an image of the alignment target acquired by imaging the wafer. The method also includes aligning the centroid to a centroid of a geometrical shape describing the alignment target. In addition, the method includes assigning a design data space position of the centroid of the alignment target as a position of the centroid of the geometrical shape in the design data space. The method further includes determining a position of inspection data acquired for the wafer in the design data space based on the design data space position of the centroid of the alignment target.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: October 18, 2011
    Assignee: KLA-Tencor Technologies Corp.
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse, Eugene Shifrin
  • Publication number: 20110224932
    Abstract: Systems and methods for monitoring time-varying classification performance are disclosed.
    Type: Application
    Filed: June 23, 2010
    Publication date: September 15, 2011
    Applicant: KLA-TENCOR CORPORATION
    Inventors: Patrick Huet, Brian Duffy, Martin Plihal, Thomas Trautzsch, Chris Maher
  • Patent number: 7877722
    Abstract: Systems and methods for creating inspection recipes are provided. One computer-implemented method for creating an inspection recipe includes acquiring a first design and one or more characteristics of output of an inspection system for a wafer on which the first design is printed using a manufacturing process. The method also includes creating an inspection recipe for a second design using the first design and the one or more characteristics of the output acquired for the wafer on which the first design is printed. The first and second designs are different. The inspection recipe will be used for inspecting wafers after the second design is printed on the wafers using the manufacturing process.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: January 25, 2011
    Assignee: KLA-Tencor Corp.
    Inventors: Brian Duffy, Ashok Kulkarni
  • Publication number: 20100142800
    Abstract: Methods and systems for detecting defects on a reticle are provided. One method includes printing a single die reticle in first areas of a wafer using different values of a parameter of a lithography process and at least one second area using a nominal value of the parameter. The method also includes acquiring first images of the first areas and second image(s) of the at least one second area. In addition, the method includes separately comparing the first images acquired for different first areas to at least one of the second image(s). The method further includes detecting defects on the reticle based on first portions of the first images in which variations in the first images compared to the at least one second image are greater than second portions of the first images and the first portions that are common to two or more of the first images.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 10, 2010
    Applicant: KLA-TENCOR CORPORATION
    Inventors: Patrick Tung-Sing Pak, Wee-Teck Chia, Aaron Geurdon Chin, Irfan Malik, Brian Duffy
  • Publication number: 20100119144
    Abstract: Various methods and systems for utilizing design data in combination with inspection data are provided. One computer-implemented method for binning defects detected on a wafer includes comparing portions of design data proximate positions of the defects in design data space. The method also includes determining if the design data in the portions is at least similar based on results of the comparing step. In addition, the method includes binning the defects in groups such that the portions of the design data proximate the positions of the defects in each of the groups are at least similar. The method further includes storing results of the binning step in a storage medium.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 13, 2010
    Applicant: KLA-TENCOR TECHNOLOGIES CORPORATION
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse
  • Patent number: 7676077
    Abstract: Various methods and systems for utilizing design data in combination with inspection data are provided. One computer-implemented method for determining a position of inspection data in design data space includes aligning data acquired by an inspection system for alignment sites on a wafer with data for predetermined alignment sites. The method also includes determining positions of the alignment sites on the wafer in design data space based on positions of the predetermined alignment sites in the design data space. In addition, the method includes determining a position of inspection data acquired for the wafer by the inspection system in the design data space based on the positions of the alignment sites on the wafer in the design data space. In one embodiment, the position of the inspection data is determined with sub-pixel accuracy.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: March 9, 2010
    Assignee: KLA-Tencor Technologies Corp.
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse
  • Publication number: 20090080759
    Abstract: Various systems and methods for creating persistent data for a wafer and using persistent data for inspection-related functions are provided. One system includes a set of processor nodes coupled to a detector of an inspection system. Each of the processor nodes is configured to receive a portion of image data generated by the detector during scanning of a wafer. The system also includes an array of storage media separately coupled to each of the processor nodes. The processor nodes are configured to send all of the image data or a selected portion of the image data received by the processor nodes to the arrays of storage media such that all of the image data or the selected portion of the image data generated by the detector during the scanning of the wafer is stored in the arrays of the storage media.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 26, 2009
    Applicant: KLA-TENCOR CORPORATION
    Inventors: Kris Bhaskar, Chetana Bhaskar, Ashok Kulkarni, Eliezer Rosengaus, Cecilia Campochiaro, Chris Maher, Brian Duffy, Aneesh Khullar, Alpa Kohli, Lalita A. Balasubramanian, Santosh Bhattacharyya, Mohan Mahadevan
  • Publication number: 20090037134
    Abstract: Various methods, carrier media, and systems for monitoring a characteristic of a specimen are provided. One computer-implemented method for monitoring a characteristic of a specimen includes determining a property of individual pixels on the specimen using output generated by inspecting the specimen with an inspection system. The method also includes determining a characteristic of individual regions on the specimen using the properties of the individual pixels in the individual regions. The method further includes monitoring the characteristic of the specimen based on the characteristics of the individual regions.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 5, 2009
    Inventors: Ashok Kulkarni, Chien-Huei (Adam) Chen, Cecelia Campochiaro, Richard Wallingford, Yong Zhang, Brian Duffy
  • Publication number: 20080250384
    Abstract: Systems and methods for creating inspection recipes are provided. One computer-implemented method for creating an inspection recipe includes acquiring a first design and one or more characteristics of output of an inspection system for a wafer on which the first design is printed using a manufacturing process. The method also includes creating an inspection recipe for a second design using the first design and the one or more characteristics of the output acquired for the wafer on which the first design is printed. The first and second designs are different. The inspection recipe will be used for inspecting wafers after the second design is printed on the wafers using the manufacturing process.
    Type: Application
    Filed: December 19, 2007
    Publication date: October 9, 2008
    Inventors: Brian Duffy, Ashok Kulkarni
  • Publication number: 20080167829
    Abstract: Various methods and systems for using electrical information for a device being fabricated on a wafer to perform one or more defect-related functions are provided. One computer-implemented method includes using electrical information for a device being fabricated on a wafer to perform one or more defect-related functions. The one or more defect-related functions include one or more post-mask, defect-related functions.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 10, 2008
    Inventors: Allen Park, Peter Rose, Ellis Chang, Brian Duffy, Mark McCord, Gordon Abbott
  • Publication number: 20080113612
    Abstract: An impeller exhaust ridge vent is provided for covering a ridge slot formed along the ridge of a roof. The ridge vent has an elongated laterally flexible center panel with edge portions along which vents are formed. Standoffs can depend from the bottom of the center panel for supporting the center panel a predetermined distance above the roof deck so that attic air can vent through the ridge slot, beneath the center panel, and exit through the vents. A base panel can be provided to cover the roof deck and form a smooth substantially sealed air duct for passage of the air. Upstanding wind baffles are disposed outboard of and spaced from the vents. One or more tangential impellers is rotatably mounted in the pace between the vents and wind baffles and can be free spinning or driven by an electric motor. Rotation of the tangential impellers creates a cross-flow fan effect that draws air forcibly from beneath the center panel and exhausts it to ambience. The attic space is thereby actively ventilated.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 15, 2008
    Inventors: Adem Chich, Sudhir Railkar, Walter Zarate, Brian Duffy
  • Publication number: 20070230770
    Abstract: Various methods and systems for determining a position of inspection data in design data space are provided. One computer-implemented method includes determining a centroid of an alignment target formed on a wafer using an image of the alignment target acquired by imaging the wafer. The method also includes aligning the centroid to a centroid of a geometrical shape describing the alignment target. In addition, the method includes assigning a design data space position of the centroid of the alignment target as a position of the centroid of the geometrical shape in the design data space. The method further includes determining a position of inspection data acquired for the wafer in the design data space based on the design data space position of the centroid of the alignment target.
    Type: Application
    Filed: June 7, 2007
    Publication date: October 4, 2007
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse, Eugene Shifrin
  • Publication number: 20070156379
    Abstract: Various methods and systems for utilizing design data in combination with inspection data are provided. One computer-implemented method for determining a position of inspection data in design data space includes aligning data acquired by an inspection system for alignment sites on a wafer with data for predetermined alignment sites. The method also includes determining positions of the alignment sites on the wafer in design data space based on positions of the predetermined alignment sites in the design data space. In addition, the method includes determining a position of inspection data acquired for the wafer by the inspection system in the design data space based on the positions of the alignment sites on the wafer in the design data space. In one embodiment, the position of the inspection data is determined with sub-pixel accuracy.
    Type: Application
    Filed: November 20, 2006
    Publication date: July 5, 2007
    Inventors: Ashok Kulkarni, Brian Duffy, Kais Maayah, Gordon Rouse
  • Publication number: 20070039252
    Abstract: A fungus strip that release ions when precipitation flows down on the strip that are deleterious to fungus and algae. The strip is positioned on a building material. The strip has a length, width and thickness. The ions are preferably of zinc or tin. The building material can be asphaltic roofing shingles, non-asphaltic roofing, or siding.
    Type: Application
    Filed: August 8, 2005
    Publication date: February 22, 2007
    Inventors: Sudhir Railkar, Adem Chich, Brian Duffy, Walter Zarate
  • Publication number: 20050191922
    Abstract: A fiber mat of improved tensile strength and a process of making same is disclosed. The fiber mat comprises: fibers; a resinous fiber binder; and a urethane binder modifier.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Linlin Xing, Brian Duffy, William Bittle, Betty Roberts, Chuck Ford
  • Patent number: D643876
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: August 23, 2011
    Assignee: Premier Election Solutions, Inc.
    Inventors: Elmore Miranda, Lester L. Wright, Jerry Wagoner, Brian Duffy, Randall Tweed, Darrin Caldwell, Dale Chesley, James Bower, Donnie Richardson, Eddie Bravo, Michael Madison, Archie Malit, Chansamone Thipphakesone