Patent ID: 7825001

Claim:
A method for manufacturing an electronic device, the method comprising: forming a back-surface mark by etching and removing a silicon layer and an insulating layer in a predetermined position of an SOI substrate in which the silicon layer is deposited on a front surface of a semiconductor substrate with the insulating layer interposed between the silicon layer and the semiconductor substrate; epitaxially growing a silicon substrate on the silicon layer of the SOI substrate; forming a front-surface element on a front-surface side of the silicon substrate using a concave part as a reference position, wherein the concave part appears on the front surface of the silicon substrate for the electronic device epitaxially grown on the back-surface mark; and etching the semiconductor substrate of the SOI substrate on which the front-surface element was formed; forming a back-surface element on a back-surface side of the silicon substrate using the back-surface mark as a reference position after etching of the semiconductor substrate of the SOI substrate, wherein the back-surface mark appears after the etching of the semiconductor substrate of the SOI substrate.