Patent ID: 9139901
Filing Date: 2015-09-22
Classification: C23C,H01J,H01L

Abstract:
1. A plasma processing method of processing a target object in a processing chamber by using a plasma generated between an upper electrode and a lower electrode facing the upper electrode, the method comprising: etching an etching target layer of the target object by supplying a first gas containing at least one of SF forming a protective film on at least a part of the etching target layer by supplying a second gas containing at least one of hydrocarbon, fluorocarbon, and fluorohydrocarbon into the processing chamber and generating a plasma of the second gas while the pressure in the processing chamber is set to a second pressure which is lower than the first pressure and a second bias power which is higher than the first bias power is applied to the lower electrode, wherein a cycle including the etching and the forming is repeatedly executed.