Patents by Inventor Rodney C. Smedt

Rodney C. Smedt 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: 7724357
    Abstract: A system for simultaneously inspecting the frontsides and backsides of semiconductor wafers for defects is disclosed. The system rotates the semiconductor wafer while the frontside and backside surfaces are generally simultaneously optically scanned for defects. Rotation is induced by providing contact between the beveled edges of the semiconductor wafer and roller bearings rotationally driven by a motor. The wafer is supported in a tilted or semi-upright orientation such that support is provided by gravity. This tilted supporting orientation permits both the frontside and the backside of the wafer to be viewed simultaneously by a frontside inspection device and a backside inspection device.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: May 25, 2010
    Assignee: KLA-Tencor Corporation
    Inventor: Rodney C. Smedt
  • Patent number: 7663746
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: February 16, 2010
    Assignee: KLA-Tencor Techologies Corporation
    Inventors: Paul J. Sullivan, Geroge Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Publication number: 20090040514
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Application
    Filed: October 7, 2008
    Publication date: February 12, 2009
    Applicant: KLA-Tencor Technologies Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Patent number: 7436506
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: October 14, 2008
    Assignee: KLA-Tencor Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Patent number: 7209227
    Abstract: A system for simultaneously inspecting the frontsides and backsides of semiconductor wafers for defects is disclosed. The system rotates the semiconductor wafer while the frontside and backside surfaces are generally simultaneously optically scanned for defects. Rotation is induced by providing contact between the beveled edges of the semiconductor wafer and roller bearings rotationally driven by a motor. The wafer is supported in a tilted or semi-upright orientation such that support is provided by gravity. This tilted supporting orientation permits both the frontside and the backside of the wafer to be viewed simultaneously by a frontside inspection device and a backside inspection device.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: April 24, 2007
    Assignee: KLA-Tencor Corporation
    Inventor: Rodney C. Smedt
  • Patent number: 7009696
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: March 7, 2006
    Assignee: KLA-Tencor Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Patent number: 6806951
    Abstract: Methods and systems for monitoring semiconductor fabrication processes are provided. A system may include a stage configured to support a specimen and coupled to a measurement device. The measurement device may include an illumination system and a detection system. The illumination system and the detection system may be configured such that the system may be configured to determine multiple properties of the specimen. For example, the system may be configured to determine multiple properties of a specimen including, but not limited to, at least one characteristic of defects on at least two sides of a specimen. In this manner, a measurement device may perform multiple optical and/or non-optical metrology and/or inspection techniques.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: October 19, 2004
    Assignee: KLA-Tencor Technologies Corp.
    Inventors: Dan Wack, Ady Levy, Kyle A. Brown, Rodney C. Smedt, Gary Bultman, Mehrdad Nikoonahad, John Fielden
  • Publication number: 20040145733
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 29, 2004
    Applicant: KLA-Tencor Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Patent number: 6686996
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: February 3, 2004
    Assignee: KLA-Tencor Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Publication number: 20020154296
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Application
    Filed: June 7, 2002
    Publication date: October 24, 2002
    Applicant: KLA-Tencor Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Patent number: 6414752
    Abstract: A system for inspecting specimens such as semiconductor wafers is provided. The system provides scanning of dual-sided specimens using a damping arrangement which filters unwanted acoustic and seismic vibration, including an optics arrangement which scans a first portion of the specimen and a translation or rotation arrangement for translating or rotating the specimen to a position where the optics arrangement can scan the remaining portion(s) of the specimen. The system further includes means for stitching the scans together, thereby providing both damping of the specimen and the need for smaller and less expensive optical elements.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: July 2, 2002
    Assignee: KLA-Tencor Technologies Corporation
    Inventors: Paul J. Sullivan, George Kren, Rodney C. Smedt, Hans J. Hansen, David W. Shortt, Daniel Ivanov Kavaldjiev, Christopher F. Bevis
  • Publication number: 20010013684
    Abstract: An edge handling chuck which operates to maintain a semiconductor wafer at a desirable orientation while rotating the wafer at high speeds is disclosed. The edge handling chuck consists of a cylindrical plate which holds a silicon wafer using multiple spring loaded edge wafer clamps. Gas passes through a center hole in the cylindrical plate and is dispersed to the atmosphere using multiple pressure relief openings in the cylindrical plate. The purpose of this gas arrangement is to stabilize the wafer due to spinning vortex effects. The cylindrical plate has mounted therein an ertalyte ring which provides an area of angled contact for the wafer. The gas arrangement operates to pass gas to the slight space between the semiconductor wafer and the cylindrical plate, thereby contacting a lower surface of the wafer, and subsequently out of the arrangement using the pressure relief holes.
    Type: Application
    Filed: April 17, 2001
    Publication date: August 16, 2001
    Applicant: KLA-Tencor Corporation
    Inventors: Rodney C. Smedt, George L. Coad