| 摘要 |
Upon reading out signals from a plurality of photodiode layers, highly color-separable signals which suffer less color mixture and noise are read out. A photoelectric conversion element which is formed by alternately stacking photoelectric conversion regions of a first conductivity type and regions of a second conductivity type as a conductivity type opposite to the first conductivity type to form a multi-layered structure, in which the photoelectric conversion regions of the first conductivity type are formed to have depths suited to mainly photoelectrically convert light components in a plurality of different wavelength ranges, and which outputs signals for respective wavelength ranges, has a plurality of charge accumulation portions for accumulating charges obtained by photoelectric conversion in the photoelectric conversion regions in surface regions of the photoelectric conversion regions, and an output portion for converting charges transferred from the charge accumulation portions into electrical signals, and outputting the electrical signals.
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