Patent ID: 7592645

Claim:
A photoelectric conversion device comprising: a plurality of photoreceiving portions provided in a substrate; an interlayer film overlying the plurality of photoreceiving portions; a large refractive index region respectively corresponding to each photoreceiving portion and having a higher refractive index than that of the interlayer film; a plurality of wiring layers; and a layer provided between the plurality of photoreceiving portions and the large refractive index regions, the layer being provided under the plurality of wiring layers and having a lower etching rate than that of the interlayer film, wherein a refractive index of the layer of the lower etching rate is between the refractive index of each large refractive index region and a refractive index of the substrate, and the layer of the lower etching rate is arranged so as to cover at least a whole surface of the photoreceiving portions.