Read out element shared type image sensor with improved light receiving efficiency

A readout device sharing image sensor with improve light receiving efficiency is provided to effectively increase a fill factor by maximizing the area of a photoelectric conversion device and by selecting a layout in which the increased area is mostly used as a light receiving region. An active region of a readout device is shared in a plurality of photoelectric devices. A plurality of active regions of a photoelectric conversion device are connected to or separated from the active region of the readout device at a corner portion and directly confront each other in a direction parallel with a row direction and a column direction.