BACKSIDE ILLUMINITED IMAGE SENSOR

摘要

PURPOSE: A back illuminated image sensor is provided to apply minus voltage to the rear surface of a semiconductor layer and to prevent color mixing. CONSTITUTION: A semiconductor substrate(530) has the front surface and the rear surface. A light receiving element is formed in the semiconductor substrate. The light receiving element changes the light inputted to the rear surface of the semiconductor substrate into electricity. A semiconductor layer(560) is formed on the front surface of the semiconductor substrate. A second semiconductor layer(550) is formed on the rear surface of the semiconductor substrate. [Reference numerals] (AA) Rear surface; (BB) Front surface