Patent ID: 7772098

Claim:
A production method for a semiconductor device, comprising the steps of: (a) forming a protection film on one face of a semiconductor wafer, the semiconductor wafer having a principal face and a rear face which is parallel to the principal face; (b) allowing the semiconductor wafer to be attracted onto an attracting face of an electrostatic chuck which is heated to 400° C. or more, the semiconductor wafer being attracted onto the attracting face via the protection film; (c) while heating the semiconductor wafer to 400° C. or more, performing an ion implantation for the face of the semiconductor wafer on which the protection film is not formed; (d) removing the protection film from the semiconductor wafer; wherein, step (b) comprises the steps of placing the semiconductor wafer on the attracting face of the electrostatic chuck heated to 400° C. or more and increasing a temperature of the semiconductor wafer to a first temperature, and applying a voltage to the electrostatic chuck and allowing the semiconductor wafer to be attracted onto the attracting face, thereby increasing the temperature of the semiconductor wafer further from the first temperature to reach 400° C. or more; and the protection film has a hardness which is lower than a hardness of the attracting face of the electrostatic chuck, and the protection film has a thickness of no less than 1 μm and no more than 5 μm.