Patent ID: 8253928
Filing Date: 2012-08-28
Classification: G03B,G03F

Abstract:
1. An exposure apparatus for exposing a substrate to radiant energy, the apparatus comprising: a substrate stage including a chuck, and configured to hold the substrate on the chuck with a first vacuum and to be moved, the substrate stage including a coarse-motion stage that includes a lifting portion configured to be raised and lowered through a through-hole provided in the chuck, and to hold the substrate thereon with a second vacuum with the lifting portion raised through the through-hole, and a fine-motion stage that includes the chuck and supported by the coarse-motion stage; a first detector configured to detect an error of holding of the substrate on the chuck via measuring of a pressure of the first vacuum; a second detector configured to detect an error of holding of the substrate on the lifting portion via measuring of a pressure of the second vacuum; a measuring device configured to measure an amount of positional deviation of the substrate relative to the chuck; and a controller configured to cause, if the first detector detects the error of holding of the substrate on the chuck and then the second detector does not detect the error of holding of the substrate on the lifting portion, the substrate stage to be moved with the substrate held by the lifting portion, and to cause the measuring device to measure the amount of positional deviation of the substrate on the moved substrate stage with the substrate held by the lifting portion.