An image sensing device and a method for forming the same are disclosed. The image sensing device includes a first substrate, first photoelectric conversion elements formed in the first substrate and configured to generate photocharges in response to a reception of light, a second substrate formed over the first substrate, and second photoelectric conversion elements formed in the second substrate and configured to generate photocharges in response to a reception of light, the second photoelectric conversion elements contacting corresponding the first photoelectric conversion elements, respectively.