The world's smallest image sensor (1-mm 50 k-pixel interline CCD) has been developed. It features an extremely small pixel of 4 x 4 mu m(2) integration of a V-sub adjust circuit, and a packageless assembly of a chip provided microlens. The resultant chip size and the assembled device outer size are 1.1(H) x 1.34(V) mm and 1.2(H)x 1,5(V) mm, respectively.