US Patent 12068342 Photoelectric conversion device, imaging system, and movable body

A photoelectric conversion device includes a semiconductor substrate, a photoelectric conversion unit, an amplification transistor, and an insulating isolation portion. The photoelectric conversion unit is disposed inside the semiconductor substrate. The amplification transistor is configured to output a signal from the photoelectric conversion unit. The insulating isolation portion, disposed between the photoelectric conversion unit and the amplification transistor to surround the amplification transistor in a plan view, is configured to penetrate through the semiconductor substrate. A first well in which the amplification transistor is disposed is connected to a source or a drain of the amplification transistor.