Patents by Inventor David Callan

David Callan 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: 20070162781
    Abstract: Apparatus and methods for compensating for the movement of a substrate in a lithographic apparatus during a pulse of radiation include providing a pivotable mirror configured to move a patterned radiation beam incident on the substrate in substantial synchronism with the substrate.
    Type: Application
    Filed: December 8, 2006
    Publication date: July 12, 2007
    Applicants: ASML NETHERLANDS B.V., ASML HOLDING N.V.
    Inventors: Huibert Visser, David Callan, Robert-Han Schmidt, Roberto Wiener, Johannes Theodorus Van de Ven, George Robbins
  • Publication number: 20070150779
    Abstract: Apparatus and methods for compensating for the movement of a substrate in a lithographic apparatus during a pulse of radiation include providing a pivotable mirror configured to move a patterned radiation beam incident on the substrate in substantial synchronism with the substrate.
    Type: Application
    Filed: March 9, 2006
    Publication date: June 28, 2007
    Applicants: ASML NETHERLANDS B.V., ASML HOLDING N.V.
    Inventors: Huibert Visser, David Callan, Robert-Han Schmidt, George Robbins
  • Patent number: 6097474
    Abstract: Blades pivotally attached together linked to push rods and inserted into an illumination field, energy or flux. The blades extend longitudinally along the length of a rectangular illumination field or slit used to image a reticle onto a photosensitive substrate. The blades controllably adjust the width of the rectangular illumination field to modify the illumination intensity or energy provided to a photosensitive substrate. The illumination field is scanned across the photosensitive substrate to expose it with the image of a reticle. The blades are dynamically controlled during the scanning exposure to adjust the illumination intensity or energy in a predetermined way. The resulting selective change in exposure dose corrects local area of line width variance. Various errors in pattern reproduction using a photolithographic system are relatively easily corrected. This is particularly advantageous in a scanning lithography system used in the manufacture of semiconductors.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: August 1, 2000
    Assignee: SVG Lithography Systems, Inc.
    Inventors: Andrew W. McCullough, Pradeep K. Govil, Daniel N. Galburt, David Callan
  • Patent number: 6013401
    Abstract: Blades pivotally attached together linked to push rods and inserted into an illumination field, energy or flux. The blades extend longitudinally along the length of a rectangular illumination field or slit used to image a reticle onto a photosensitive substrate. The blades controllably adjust the width of the rectangular illumination field to modify the illumination intensity or energy provided to a photosensitive substrate. The illumination field is scanned across the photosensitive substrate to expose it with the image of a reticle. The blades are dynamically controlled during the scanning exposure to adjust the illumination intensity or energy in a predetermined way. The resulting selective change in exposure dose corrects local area of line width variance. Various errors in pattern reproduction using a photolithographic system are relatively easily corrected. This is particularly advantageous in a scanning lithography system used in the manufacture of semiconductors.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: January 11, 2000
    Assignee: SVG Lithography Systems, Inc.
    Inventors: Andrew W. McCullough, Pradeep K. Govil, Daniel N. Galburt, David Callan