Patent ID: 7678669

Claim:
A method for manufacturing a semiconductor substrate, comprising: a temporal fixation step of preparing a wafer formed of a semiconductor single crystal and a first substrate with a hole diameter larger than the wafer to overlap the wafer and the first substrate with each other so that the front surface of the wafer and the first substrate face each other, and thus to perform alignment of the wafer with reference to an orientation flat of the wafer and a first mark provided in the first substrate, whereby the wafer is temporarily fixed to a predetermined position of the first substrate in a position-adjustable manner; an application step of applying an adhesive on the rear surface of the wafer temporarily fixed to the first substrate; an adhesion step of preparing a second substrate, which has the same hole diameter and shape as the first substrate and has a second mark at the same position as the first substrate, to perform alignment so that the first and second substrates are overlapped with each other with reference to the first and second marks, and thus to overlap the wafer and the second substrate so that the rear surface of the wafer and the second substrate face each other, whereby the wafer temporarily fixed to the first substrate is adhered to the second substrate through the adhesive; and a removal step of removing the first substrate to which the wafer is temporarily fixed.