Patent ID: 8563332
Filing Date: 2013-10-22
Classification: H01L

Abstract:
1. A wafer reclamation method in which a semiconductor wafer is reclaimed by removing a different material layer and/or at least a part of a defective layer formed on a surface of the semiconductor wafer, the method comprising: a physically removing step of physically removing the different material layer and/or at least the part of the defective layer from the semiconductor wafer; a preliminary dry etching step of directly plasma etching the surface of the semiconductor wafer from which the different material layer and/or at least the part of the defective layer have been removed in the physically removing step; a film forming step of forming a film on the surface of the semiconductor wafer etched in the preliminary dry etching step; and a dry etching step of plasma etching the surface of the semiconductor wafer under the film together with the film formed in the film forming step, wherein in the film forming step, the film is formed on the surface of the semiconductor wafer, and then in the dry etching step, the surface of the semiconductor wafer under the film is etched together with the film formed on the surface of the semiconductor wafer.