US Patent:
20130220930, Aug 29, 2013
Inventors:
JSR Corporation - , US
Goji WAKAMATSU - Sunnyvale CA, US
International Classification:
B01D 15/00
C08K 5/07
C08K 5/103
Abstract:
A cleaning method of an immersion liquid includes supplying an immersion liquid on a surface of a cleaning substrate. The immersion liquid is to be used in a liquid immersion lithography apparatus. The cleaning substrate has a substrate and an organic film laminated on a top face side of the substrate. The immersion liquid is allowed to move on the substrate to remove contaminants from the immersion liquid.