Patent ID: 9197830
Filing Date: 2015-11-24
Classification: H04N

Abstract:
1. A solid-state imaging device comprising: a substrate; a first electrode formed above the substrate; a photoelectric converting film formed above the first electrode and converting light into signal charges; a second electrode formed on the photoelectric converting film; a charge accumulating unit formed on the substrate, electrically connected to the first electrode, and configured to accumulate charges flowing from the first electrode; a reset transistor having a drain electrically connected to the charge accumulating unit; a signal readout circuit electrically connected to the charge accumulating unit, and generating a readout signal which is an electric signal and whose level is based on an amount of the charges accumulated in the charge accumulating unit; and a control circuit (i) applying a turn-on voltage to a gate of the reset transistor while applying a first voltage to a source of the reset transistor, and (ii) varying a voltage being applied to the source from the first voltage to a second voltage while applying the turn-on voltage to the gate, the turn-on voltage turning on the gate of the reset transistor, the first voltage repelling the charges accumulated in the charge accumulating unit, and the second voltage attracting the charges accumulated in the charge accumulating unit, wherein, while the gate of the reset transistor is on, the control circuit gradually varies the voltage being applied to the source from the first voltage to the second voltage, so that a time period for the gradual variation takes longer than or equal to a time period required for a pulse to the gate to either rise or fall.