Patent ID: 9093261
Filing Date: 2015-07-28
Classification: H01J,H01L

Abstract:
1. A method of manufacturing a semiconductor device including processing a semiconductor substrate using a plasma etching apparatus provided with a processing chamber, the semiconductor substrate having an uneasily-etched material formed thereabove and at least an upper layer film formed above the uneasily-etched material, the method comprising: etching the upper layer film after loading the semiconductor substrate into the processing chamber and causing deposition of a reactive product of the upper layer film along an inner wall of the processing chamber; forming a lift-off layer selectively along the inner wall of the processing chamber and not along the semiconductor substrate with the semiconductor substrate loaded in the processing chamber; etching the uneasily-etched material and causing deposition of a reactive product of the uneasily-etched material along the lift-off layer; and cleaning, by removing the lift-off layer, the inner wall of the processing chamber after the semiconductor substrate is unloaded from the plasma etching apparatus, the cleaning of the inner wall of the processing chamber including removing the reactive product of the uneasily-etched material and the reactive product of the upper layer film.