| 摘要 |
The first evaluation value is obtained by evaluating an electrical signal containing the position information of a mark in accordance with an evaluation criterion. The first overlay error generated by the exposure apparatus is estimated based on the first evaluation value, the second evaluation value obtained by evaluating an electrical signal in a position detector of the another exposure apparatus in accordance with the evaluation criterion, and the second overlay error generated by another exposure apparatus. The exposure apparatus exposes a substrate while positioning it so as to reduce an overlay error generated by the exposure apparatus to an error smaller than the first overlay error based on the basis of an output from the position detector of the exposure apparatus, which detects the position of the mark, and the estimated first overlay error. |
