Patent ID: 8063958
Filing Date: 2011-11-22
Classification: H01L,H04N

Abstract:
1. A solid state image pickup device, comprising: a group including an amplifying unit including an input portion, first and second photoelectric conversion regions, and first and second carrier accumulating units, wherein the first photoelectric conversion region, the second photoelectric conversion region, the first carrier accumulating unit, and the second carrier accumulating unit are connected to the input portion in parallel; a first capacitor that holds carriers amplified by the amplifying unit; a second capacitor that holds carriers amplified by the amplifying unit; a third capacitor that holds carriers amplified by the amplifying unit; a fourth capacitor that holds carriers amplified by the amplifying unit; a first differential amplifier that outputs a voltage generated by performing a subtracting operation between voltages of the first and second capacitors; a second differential amplifier that outputs a voltage generated by performing a subtracting operation between voltages of the third and fourth capacitors; an adder that adds output signals from the first and second differential amplifiers; and an amplifier that amplifies a signal generated by addition in the adder.