Patent ID: 6239861
Filing Date: 2001-05-29
Classification: G03F

Abstract:
A scan type exposure apparatus comprising:a first exposing device including an illumination optical system which is disposed adjacent to a mask for illuminating the mask, and a projection optical system positioned between said mask and a first exposure area on a rectangular substrate coated with a photosensitive agent, said projection optical system projecting light beams passing through said mask upon the first exposure area on said rectangular substrate;a moving device disposed adjacent to said mask and said substrate, that moves said mask and said substrate in synchronization along a predetermined direction with respect to said projection optical system; anda second exposing device that exposes a second exposure area on said rectangular substrate which is positioned adjacent to the first exposure area, a predetermined distance from the first exposure area and which is smaller than the first exposure area, said first exposing device and said second exposing device both exposing said second exposure area, thereby double exposing said second exposure area.