Patent ID: 7187429
Filing Date: 2007-03-06
Classification: G03F,H01L

Abstract:
1. An exposure apparatus for alignment of a substrate and exposure of the aligned substrate to a pattern, said apparatus comprising: an alignment optical system configured to sense an image of an alignment mark on the substrate; a position detector configured to detect position of the alignment mark based on the sensed image; a controller configured to select alignment marks on the substrate to be sensed by said alignment optical system, to control the alignment based on positions of the selected alignment marks detected by said alignment optical system and said position detector, and to control the exposure of the aligned substrate, said controller being configured so that a first alignment mark in an outermost peripheral shot on the substrate is selectable if a first distance of the first alignment mark from an edge of the substrate is greater than a first value and a second distance of the first alignment mark from a border between an exposure area and a non-exposure area is greater than a second value; and a storage configured to store the first value and the second value.