Patent ID: 6456363
Filing Date: 2002-09-24
Classification: G03F

Abstract:
A scanning exposure apparatus in which a substrate is exposed to an exposure beam while moving the substrate during scanning exposure, the apparatus comprising:a beam source which emits pulses of the exposure beam during the scanning exposure, the beam source emitting pulses of the exposure beam at a predetermined maximum oscillation frequency; a directing system having optical elements disposed between the beam source and the substrate, which directs the exposure beam emitted from the beam source to an irradiation area, wherein during the scanning exposure, a plurality of regions are within the irradiation area on the substrate, each of the plurality of regions is irradiated with at least one beam pulse, and integrated numbers of pulses provided on the plurality of regions vary among the plurality of regions; a detecting system having a beam split member disposed in a path of the exposure beam and a receiver which receives a part of the exposure beam split by the split member, that detects intensity information of the exposure beam during the scanning exposure; and an adjusting system having a voltage controller which is functionally connected with the detecting system, that controls voltage to be supplied to the beam source in accordance with the intensity information of at least one of previous pulses of the exposure beam in order to adjust intensity of a subsequent pulse of the exposure beam during the scanning exposure.