Illumination of a Patterning Device Based on Interference for Use in a Maskless Lithography System
First Claim
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1. A lithographic apparatus, comprising:
- an array of individually controllable elements;
an interference projection system that is configured to project at least two beams of radiation onto the array of individually controllable elements, such that the beams of radiation interfere at a surface of the array of individually controllable elements;
wherein the array of individually controllable elements is configured to modulate the radiation projected onto the array by the interference projection system; and
a projection system, configured to project onto a substrate the radiation modulated by the array of individually controllable elements.
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Abstract
A lithographic apparatus in which beams of radiation are projected onto an array of individually controllable elements, such that the beams interfere. Radiation that is further modulated by the array of individually controllable elements is projected onto a substrate.
21 Citations
15 Claims
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1. A lithographic apparatus, comprising:
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an array of individually controllable elements; an interference projection system that is configured to project at least two beams of radiation onto the array of individually controllable elements, such that the beams of radiation interfere at a surface of the array of individually controllable elements; wherein the array of individually controllable elements is configured to modulate the radiation projected onto the array by the interference projection system; and a projection system, configured to project onto a substrate the radiation modulated by the array of individually controllable elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device manufacturing method, comprising:
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projecting at least two beams of radiation onto an array of individually controllable elements, such that the beams of radiation interfere at a surface of the array of individually controllable elements; modulating the radiation incident on the array of individually controllable elements using the array; and projecting onto a substrate the modulated radiation.
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Specification