Image sensing device and image sensing system

An image sensing device having an image sensing region and a peripheral region arranged on the periphery of the image sensing region, the image sensing region including an effective region in which a plurality of effective pixels including photoelectric conversion units that are not shielded from light is arranged and an optical black region that is a region adjacent to the effective region and in which a plurality of optical black pixels including photoelectric conversion units that are shielded from light is arranged;

• the image sensing device comprising:
• a semiconductor substrate;
• a light shielding layer that is arranged above the semiconductor substrate and that shields the optical black region and the peripheral region from light;
• a first capacitance element that is arranged between the light shielding layer in the peripheral region and the semiconductor substrate and that is used to temporarily hold signals output from the effective pixels or the optical black pixels;
• and
• a second capacitance element that is arranged between the light shielding layer in the optical black region and the semiconductor substrate so as to shield the photoelectric conversion units of the optical black pixels from light.