Patent ID: 8080840

Claim:
An image sensor comprising: readout circuitry on a first substrate; an interlayer dielectric layer including at least one metal and at least one contact plug electrically connected to the readout circuitry; and an image sensing device formed on a second substrate, bonded to the interlayer dielectric layer, and provided with a first conductive type conduction layer and a second conductive type conduction layer directly formed on the first conductive type conduction layer, wherein an uppermost contact plug of at least one contact plug has a wall structure extending from an uppermost metal, wherein the top surface of the uppermost contact plug makes contact with the image sensing device and is electrically connected to an adjacent image sensing device and an adjacent uppermost metal of an adjacent pixel wherein the uppermost contact plug extends from the uppermost metal and is bent at least one time so as to connect with the adjacent image sensing device and the adjacent uppermost metal of the adjacent pixel.