Patent ID: 7902077
Filing Date: 2011-03-08
Classification: H01L

Abstract:
1. A semiconductor device manufacturing method comprising: forming an etching mask having a predetermined circuit pattern on a surface of an etching target film disposed on a semiconductor substrate; then, etching the etching target film through the etching mask to form a groove or hole in the etching target film; then, removing the etching mask by denaturing the etching mask, by use of a process gas containing ozone and water vapor, to be soluble in a predetermined liquid comprising purified water or a chemical solution; then, dissolving the etching mask thus denatured by the predetermined liquid; and then, recovering damage of the etching target film caused before or in said removing the etching mask, while supplying a predetermined recovery gas, wherein said recovering damage comprises heating the semiconductor substrate at a first temperature without supplying a silylation gas onto the semiconductor substrate to remove moisture remaining on the semiconductor substrate and then supplying the silylation gas as the recovery gas onto the semiconductor substrate to recover the damage by a silylation process.