Patent ID: 7579665

Claim:
A light receiving device comprising a single semiconductor substrate and a light receiving device that has a first photoelectric conversion part and a second photoelectric conversion part and is provided on or above an light entering side of the semiconductor substrate, wherein: the single semiconductor substrate comprises regions of a first conductivity type and regions of a second conductivity type in an alternately multiply stacked manner, wherein the second conductivity type is a conductivity type opposite to the first conductivity type; each of junction surfaces between the regions of the first conductivity type and the regions of the second conductivity type is formed to have a depth which enables converting light, which is mainly in the blue or red wavelength regions, to electricity; the first photoelectric conversion part and second photoelectric conversion part detect light in two different wavelength regions; and the respective detected wavelengths of the first photoelectric conversion part and second photoelectric conversion part are longer than the central wavelength of the blue wavelength region, and shorter than the central wavelength of the red wavelength region.