MOS IMAGE PICKUP DEVICE

摘要

A MOS image pickup device in which unit cells are arranged two-dimensionally in a matrix, a horizontal line (column) of unit cells is selected by means of a vertical address circuit, a vertical signal line to which the outputs of one vertical line (row) of unit cells are fed by means of a horizontal address circuit, and the signals of the unit cells are sequentially outputted. Each unit cell is provided with an output circuit which outputs the output of a photodiode to a vertical signal line, a plurality of photodiodes connected in parallel with the output circuit, and selection switch which selects one of the photodiodes and connects the selected photodiode to the output circuit. The output circuit is composed of an amplifying transistor which amplifies the outputs of the photodiodes, a selection transistor which selects one of the unit cells, and a reset transistor which resets the electric charge of the photodiodes.