Photoelectric conversion device, imaging system, and moving body

A photoelectric conversion device comprising:

• a substrate;
• a first photoelectric conversion unit, a second photoelectric conversion unit, a third photoelectric conversion unit, and a fourth photoelectric conversion unit that are arranged on the substrate and each configured to generate charges in accordance with incident light;
• a first holding portion that is arranged on the substrate and configured to hold charges transferred from at least one of the first photoelectric conversion unit, the second photoelectric conversion unit, the third photoelectric conversion unit, and the fourth photoelectric conversion unit;
• a first transfer unit arranged on the substrate and configured to transfer charges from the first photoelectric conversion unit to the first holding portion;
• a second transfer unit arranged on the substrate and configured to transfer charges from the second photoelectric conversion unit to the first holding portion;
• a third transfer unit arranged on the substrate and configured to transfer charges from the third photoelectric conversion unit to the first holding portion;
• a fourth transfer unit arranged on the substrate and configured to transfer charges from the fourth photoelectric conversion unit to the first holding portion;
• and
• a first amplifier unit including an input node configured to
• receive charges transferred from the first holding portion;
• wherein the first photoelectric conversion unit and the second photoelectric conversion unit are arranged adjacent to each other along a first direction in plan view with respect to the substrate,
• wherein the first photoelectric conversion unit and the third photoelectric conversion unit are arranged adjacent to each other along a second direction, which is different from the first direction, in the plan view,
• wherein the second photoelectric conversion unit and the fourth photoelectric conversion unit are arranged adjacent to each other along the second direction in the plan view, and
• wherein at least a part of the first holding portion is arranged in a region surrounded by the closest apexes of the first photoelectric conversion unit, the second photoelectric conversion unit, the third photoelectric conversion unit, and the fourth photoelectric conversion unit in the plan view.