Patent ID: 8241423

Claim:
A method of manufacturing an epitaxial growth semiconductor wafer having a main face, a back face on an opposite side, and a side face between the main face and the back face, the method comprising: forming a main chamfered part along a circumferential edge where the main face and the side face meet and a back chamfered part along a circumferential edge where the back face and the side face meet; forming a chemical vapor deposition (CVD) layer at least partially on the main chamfered part or the back chamfered part; grinding the main chamfered part and the back chamfered part to remove the CVD layer; and finishing the main chamfered part and the back chamfered part to be mirror finished surfaces with a maximum height of profile (Rz) on each face not exceeding 0.3 μm such that fracture and chipping on the surfaces are prevented.