Patents by Inventor Patrick J. Couillard

Patrick J. Couillard 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: 5776645
    Abstract: A print bias target is imaged in a single layer of light-sensitive material. The print bias target is made up of a pair of concentric geometric shapes in which a plurality of target regions forms a plurality of isolated edges. Each target region is of a different image structure than each other target region immediately adjacent thereto. The positioning of a given isolated edge in the print bias target is determined relative to a corresponding isolated edge in the design image from which the print bias target was imaged. Focus setting and/or exposure setting for a lithographic system to minimize print bias may be determined using print bias information obtained from a print bias target matrix of varying exposure and focus. An imaging aberration may also be identified using print bias information from a print bias target matrix, such as lithographic astigmatism, lithographic coma and vibration.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: July 7, 1998
    Assignee: International Business Machines Corporation
    Inventors: Roger Lawrence Barr, Patrick J. Couillard
  • Patent number: 5756238
    Abstract: A print bias target is imaged in a single layer of light-sensitive material. The print bias target is made up of a pair of concentric geometric shapes in which a plurality of target regions forms a plurality of isolated edges. Each target region is of a different image structure than each other target region immediately adjacent thereto. The positioning of a given isolated edge in the print bias target is determined relative to a corresponding isolated edge in the design image from which the print bias target was imaged. Focus setting and/or exposure setting for a lithographic system to minimize print bias may be determined using print bias information obtained from a print bias target matrix of varying exposure and focus. An imaging aberration may also be identified using print bias information from a print bias target matrix, such as lithographic astigmatism, lithographic coma and vibration.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: May 26, 1998
    Assignee: International Business Machines Corporation
    Inventors: Roger Lawrence Barr, Patrick J. Couillard
  • Patent number: 5677091
    Abstract: A print bias target is imaged in a single layer of light-sensitive material. The print bias target is made up of a pair of concentric geometric shapes in which a plurality of target regions forms a plurality of isolated edges. Each target region is of a different image structure than each other target region immediately adjacent thereto. The positioning of a given isolated edge in the print bias target is determined relative to a corresponding isolated edge in the design image from which the print bias target was imaged. Focus setting and/or exposure setting for a lithographic system to minimize print bias may be determined using print bias information obtained from a print bias target matrix of varying exposure and focus. An imaging aberration may also be identified using print bias information from a print bias target matrix, such as lithographic astigmatism, lithographic coma and vibration. A slope of an imaging profile may also be determined from print bias information.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: October 14, 1997
    Assignee: International Business Machines Corporation
    Inventors: Roger Lawrence Barr, Patrick J. Couillard