Patent ID: 8493551
Filing Date: 2013-07-23
Classification: G03F

Abstract:
1. A scanning exposure apparatus which performs an exposure of a substrate to radiant energy via an original while the original and the substrate are scanned, the apparatus comprising: a first feedback loop which includes a first controlled object including an original stage that supports the original, and is configured to control a position of the original stage; a second feedback loop which includes a second controlled object including a substrate stage that supports the substrate, and is configured to control a position of the substrate stage; and a feedback unit which includes a first calculator, and is configured to feed back a synchronization error between the original stage and the substrate stage to the first feedback loop and the second feedback loop via the first calculator, wherein the apparatus is configured such that a transfer function from a first target value for the first controlled object to a first controlled value of the first controlled object and a transfer function from a second target value for the second controlled object to a second controlled value of the second controlled object are equal, and the exposure is performed at least during a period in which the original and the substrate are accelerated.