Patent ID: 7942976
Filing Date: 2011-05-17
Classification: B08B,H01L,Y10S

Abstract:
1. A substrate processing method, comprising: a liquid film forming step of supplying a cooled liquid to a rotating substrate and spreading the cooled liquid on the surface of the substrate by centrifugal force due to the rotation of the substrate to form a liquid film on the substrate, the cooled liquid being pure water or deionized water and cooled down to a temperature of not more than 10 degrees centigrade while maintained at not less than 0 degrees centigrade; and a freezing step of freezing the liquid film on the substrate, wherein in the freezing step, a cooling gas discharger discharges a cooling gas whose temperature is lower than 0 degrees centigrade onto a part of the liquid film to freeze a local section limited to said part of the liquid film; and the cooling gas discharger is moved while the substrate is rotated, to thereby expand the frozen local section and freeze the liquid film as a whole.