Image sensing device

An image sensing device includes a pixel array including a plurality of unit pixels is arranged in rows and columns. Each of the plurality of unit pixels includes a photoelectric conversion element to generate charge carriers by converting light incident upon the photoelectric conversion element; a plurality of floating diffusion regions spaced apart from the photoelectric conversion element to hold the charge carriers; a plurality of circulation gates located at both sides of the photoelectric conversion element in each of a first direction and a second direction perpendicular to the first direction, configured to create an electric field in different regions of the photoelectric conversion element based on circulation control signals, and configured to induce movement of the charge carriers; and a plurality of transfer gates located between the circulation gates, and configured to transfer the charge carriers generated by the photoelectric conversion element to a corresponding floating diffusion region. 一种图