Patent ID: 7556975
Filing Date: 2009-07-07
Classification: H01L

Abstract:
1. A back-illuminated photodetector manufacturing method comprising the steps of: forming a charge reading portion at one surface side of a semiconductor substrate; thinning a region of the other surface side of the semiconductor substrate that corresponds to the charge reading portion while leaving regions peripheral to the region; forming an accumulation layer at the other surface side of the semiconductor substrate; forming, at a region of the one surface side of the semiconductor substrate corresponding to a the peripheral region, an electrical wiring, electrically connected to the charge reading portion, and an electrode pad, electrically connected to the electrical wiring; adhering a supporting substrate on the one surface side of the semiconductor substrate so as to cover the charge reading portion while leaving the electrode pad exposed; and cutting the semiconductor substrate and the supporting substrate at a thinned portion of the semiconductor substrate so as to leave the peripheral region corresponding to the region at which the electrical wiring and the electrode pad are formed.