PHOTOELECTRIC CONVERSION DEVICE AND IMAGING SYSTEM

摘要

A photoelectric conversion device according to an exemplary embodiment includes a pixel which includes a photoelectric conversion unit, a reset transistor, and an amplifier transistor that outputs a signal from the photoelectric conversion unit. The photoelectric conversion unit includes a first electrode, a second electrode, a photoelectric conversion layer, and an insulating layer disposed between the photoelectric conversion layer and the second electrode. The photoelectric conversion unit alternately performs an accumulation operation and a discharge operation in accordance with the voltage between the first electrode and the second electrode. In a period between two consecutive discharge operations among a plurality of discharge operations, a reset operation in which the reset transistor resets the voltage on the second electrode is performed a plurality of times.

主权项

1. A photoelectric conversion device comprising:
a photoelectric conversion unit including a first electrode, a second electrode, a photoelectric conversion layer disposed between the first electrode and the second electrode, and an insulating layer disposed between the photoelectric conversion layer and the second electrode; an amplification unit electrically connected to the second electrode and configured to output a signal generated by the photoelectric conversion unit; and a reset unit configured to reset a voltage on the second electrode, wherein the photoelectric conversion unit alternately performs an accumulation operation for accumulating signal charge in the photoelectric conversion unit and a discharge operation for discharging the signal charge accumulated in the accumulation operation from the photoelectric conversion unit, in accordance with a voltage between the first electrode and the second electrode, and wherein, in a period from a first discharge operation to a second discharge operation subsequent to the first discharge operation among a plurality of discharge operations obtained as a result of performing the discharge operation a plurality of times, the reset unit performs a first reset operation for resetting the voltage on the second electrode, and a second reset operation for resetting the voltage on the second electrode after the first reset operation.