Patent ID: 7518170

Claim:
A back illuminated imaging device, comprising: a first conductive type converting layer which is provided on a back surface side where an incident beam is irradiated, and which converts the incident beam to signal charges; a plurality of second conductive type input regions provided respectively on a front surface side of an opposite side to the back surface for a plurality of pixels configured in a two-dimensional array; a plurality of second conductive type CCD charge transferring paths which are provided on the front surface side for each of the plurality of input regions, and which extend parallel to each other and transfer signal charges from the corresponding input regions, a second conductive type charge collecting layer which is provided adjacent to the front surface side of the converting layer, and which moves the charges produced at the converting layer toward the input regions, a plurality of second conductive type charge accumulation portions which extend from the charge collecting layer to each of the input regions, and a plurality of first conductive type charge blocking regions which are provided on the front surface side and in which the CCD charge transferring paths are embedded and an impurity concentration of a first portion extending along the CCD charge transferring paths is higher than an impurity concentration of a second portion extending along gaps between the adjacent CCD charge transferring paths.