Patent ID: 8063461

Claim:
A solid-state imaging device comprising: a substrate having a light incident surface and an oppositely facing surface; an accumulation layer within said substrate and adjacent said light incident surface; a plurality of photodiodes formed in said substrate and positioned to react to light incident on said light incident surface and generate a corresponding signal charge, each photodiode having a p-n junction at an interface between a p-type region near a read-out configuration and an n-type region between said p-type region and said accumulation layer; and a readout configuration via which said signal charges are readout from said photodiodes, wherein, said photodiodes are configured such that respective distances between said p-n junctions and said light incident surface vary so that each of said photodiodes generate signal charges related to light of respectively different wavelengths and shorter than said different wavelengths, and a color image is obtained by processing said signal charges from said photodiodes without using a color filter.