Lithographic apparatus and device manufacturing method
First Claim
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1. A lithographic apparatus, comprising:
- an illumination system that conditions a radiation beam;
a patterning array comprising individually controllable elements to pattern; and
a projection system that projects the patterned radiation beam onto a target portion of a substrate, wherein the radiation beam is arranged to illuminate the patterning array non-perpendicularly.
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Abstract
A system and method are used to direct a radiation beam to illuminate non-perpendicularly a patterning array of individually controllable elements used for patterning the radiation beam. The individually controllable elements can change a telecentricity of the radiation beam. Projection of the radiation beam onto the individually controllable elements can be by a concave mirror or use a folding mirror placed in an object field of the individually controllable elements. Alternatively, the individually controllable elements can change the optical axis of the radiation beam.
52 Citations
35 Claims
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1. A lithographic apparatus, comprising:
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an illumination system that conditions a radiation beam;
a patterning array comprising individually controllable elements to pattern; and
a projection system that projects the patterned radiation beam onto a target portion of a substrate, wherein the radiation beam is arranged to illuminate the patterning array non-perpendicularly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A device manufacturing method, comprising:
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illuminating a patterning array non-perpendicularly with a beam radiation beam;
patterning the beam using the patterning array; and
projecting the patterned beam of radiation onto a substrate. - View Dependent Claims (34, 35)
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Specification