Patent ID: 6376871
Filing Date: 2002-04-23
Classification: H01L

Abstract:
A semiconductor device comprising:a photodetector having a junction at which a first conductive type first semiconductor portion and a second conductive type second semiconductor portion are joined to each other, said photodetector being formed on a semiconductor substrate; wherein division regions are formed in part of said first semiconductor portion in such a manner as to cross said first semiconductor portion, so that said junction is divided into a plurality of parts by said division regions, to form a plurality of photodetector regions having said divided junction parts; and when a reverse bias voltage, which is equal to or less than a specific reverse bias voltage applied to said divided junction parts upon operation of said photodetector, is applied to said divided junction parts, depletion layers originated from two divided junction parts, disposed on both the sides of each of the division regions, of said plurality of divided junction parts extend, in said second semiconductor portion, under said division region to be brought into contact with each other.