Patent ID: 8420555

Claim:
A manufacturing apparatus for a semiconductor device for performing heat treatment of a wafer having a front surface where a predetermined pattern is formed and a rear surface where no pattern is formed, the apparatus comprising: a transfer unit configured to transfer the wafer; a heating unit configured to anneal the wafer; a transfer mechanism provided in the transfer unit and configured to hold and transfer the wafer; a wafer holder provided in the heating unit and configured to hold the wafer; a heating mechanism provided in the heating unit and configured to heat the wafer, the heating mechanism being spaced from the wafer; a heating surface determination mechanism configured to determine which one of the front surface or the rear surface of the wafer is to be used as a heating surface that faces the heating mechanism, based on the radiation factor distribution detected within the front surface of the wafer; and a wafer rotating mechanism configured to rotate the wafer around an axis parallel to the front surface of the wafer based on the heating surface determined by the heating surface determination mechanism, wherein the wafer rotating mechanism rotates the wafer so that the heating surface determined by the heating surface determination mechanism faces the heating mechanism.