Invention Grant
US08896807B2 Apparatus and method for providing fluid for immersion lithography 有权
用于提供浸没光刻的流体的装置和方法

Apparatus and method for providing fluid for immersion lithography
Abstract:
A liquid immersion lithography apparatus includes a projection system having a final optical element via which a substrate is exposed to an exposure beam through an immersion liquid located between the final optical element and the substrate, and a nozzle member. The nozzle member has a first opening on one side of the final optical element and from which the immersion liquid is supplied, a second opening on a second side of the final optical element and from which the immersion liquid is collected, and a liquid recovery portion that surrounds a path of the exposure beam and from which the immersion liquid is collected. During exposure, an upper surface of the substrate faces the liquid recovery portion, and the immersion liquid is supplied from the first opening while the immersion liquid supplied from the first opening is recovered from the second opening and the liquid recovery portion.
Public/Granted literature
Information query
Patent Agency Ranking
0/0