Photocopying – Projection printing and copying cameras – Step and repeat
Reexamination Certificate
2007-11-20
2007-11-20
Mathews, Alan (Department: 2851)
Photocopying
Projection printing and copying cameras
Step and repeat
C355S067000, C355S077000
Reexamination Certificate
active
11378666
ABSTRACT:
A method and apparatus for exposing a radiation-sensitive material of a microlithographic substrate to a selected radiation. The method can include directing the radiation along a radiation path in a first direction toward a reticle, passing the radiation from the reticle and to the microlithographic substrate along the radiation path in a second direction, and moving the reticle relative to the radiation path along a reticle path generally normal to the first direction. The microlithographic substrate can move relative to the radiation path along a substrate path having a first component generally parallel to the second direction, and a second component generally perpendicular to the second direction. The microlithographic substrate can move generally parallel to and generally perpendicular to the second direction in a periodic manner while the reticle moves along the reticle path to change a relative position of a focal plane of the radiation.
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Boettiger Ulrich C.
Hickman Craig A.
Light Scott L.
Rericha William T.
Mathews Alan
Micro)n Technology, Inc.
Perkins Coie LLP
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