Patent ID: 6704090
Filing Date: 2004-03-09
Classification: G03F

Abstract:
An exposure method for exposing a substrate with an exposure light beam by illuminating a mask with the exposure light beam and scanning the substrate with the exposure light beam via the mask while moving the substrate in a scanning direction, the exposure method comprising:controlling an intensity distribution of the exposure light beam with a transmittance distribution control member which is arranged on an optical path of the exposure light beam to the substrate, and which has a variable transmittance distribution, to adjust an illuminance distribution of the exposure light beam in a non-scanning direction that intersects the scanning direction; wherein the transmittance distribution control member has a pattern arranged on a predetermined area, through which the exposure light beam passes, so that a transmittance distribution in a first direction corresponding to the scanning direction is different depending on a position in a second direction corresponding to the non-scanning direction, and a proportion of the predetermined area occupied by the pattern in the first direction is changed in the second direction; and synchronously moving the mask and the substrate with respect to the exposure light beam to scan the substrate across the exposure light beam having the controlled intensity distribution.