Patent ID: 6743733
Filing Date: 2004-06-01
Classification: H01L,Y10S

Abstract:
A process for producing a semiconductor device using a plasma treating apparatus comprising an etching treatment room, a substrate stage for placing a semiconductor substrate thereon installed in the etching treatment room, a plasma generating means for generating plasma in the etching treatment room, and a gas introducing means for introducing a treating gas into the etching treatment room,said process comprising subjecting the semiconductor substrate placed on the substrate stage in the etching treatment room to plasma etching treatment using gases, wherein the plasma etching treatment comprises at least two plasma etching treatment steps using different gas compositions in each step in the same etching treatment room continuously; and at least one step of said at least two steps comprises decomposing and vaporizing, or decomposing and removing after vaporization, compounds produced by the etching treatment, while conducting the etching treatment, using a gas capable of performing said at least one step, said at least one step being conducted in the etching treatment room in place of a separate cleaning step of cleaning the plasma treating apparatus.