To provide an image pickup device which exhibits high sensitivity even when pixels are arranged with a pitch below a sensitivity wavelength.
The image pickup device comprises a plurality of recessed portions arranged in an X-Y matrix and a plurality of active layers Ai-1,j-1, Ai-1,j, Ai-1,j+1, Ai,j-1, Ai,j, Ai,j+1, each of which is accommodated within the each of the plurality of recessed portions. The recessed portions are arranged with a pitch below a sensitivity wavelength. Each of the active layers Ai-1,j-1, Ai-1,j, Ai-1,j+1, Ai,j-1, Ai,j, Ai,j+1 is a deformed octagon comprising superimposed three rectangles. The deformed octagon has a length of a diagonal over a diffraction limit as its longest dimension. A first support leg 21 connects each of a plurality of thermoelectric conversion parts and each of bit lines Bi-1, Bi, Bi+1,.... A second support leg 22 connects the each of the plurality of thermoelectric conversion parts and each of word lines Wj-1, Wj, Wj+1,....
IIDA YOSHINORI
MASHIO NAOYA
