Patent ID: 6576882
Filing Date: 2003-06-10
Classification: H01L,H04N

Abstract:
An image sensor having unit pixels comprising:a photodiode of a structure that converts irradiated light to electrons, has an anode connected to ground, and extracts said electrons from a cathode; an amplification transistor having gate connected to the cathode of said photodiode, drain connected to a power supply line, and source connected to the drain of a readout transistor; a reset transistor having source connected to the cathode of said photodiode, gate connected to a reset line, and drain connected to said power supply line, a pixel interior capacitance selection transistor having drain connected to the cathode of said photodiode, gate connected to a pixel interior capacitance selection line, and source connected to pixel interior capacitance; pixel interior capacitance having one end grounded and the other end connected to the source of said pixel interior capacitance selection transistor; and a readout transistor having drain connected to the source of said amplification transistor, gate connected to a horizontal selection line, and source connected to a vertical readout line.