| 摘要 |
A photodetector includes a semiconductor substrate having photo-cells ( 1 a , 1 b , 1 c). Each photo-cell is provided with a filter layer 20 that transmits light in a wavelength range predetermined for the photo-cell, and a photoelectric converter 17 that generates a signal charge according to an intensity of the light transmitted through the filter layer 20 . Thickness (ta, tb, tc) of the filter layers 20 are corresponding to the wavelength ranges predetermined for respective photo-cells. By such a structure, it is possible to provide cost effective photodetectors that can be manufactured without managing materials for pigments and dyestuff for different colors when making color filters.
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