Patent ID: 8114701

Claim:
A method of fabricating a camera module, the method comprising: preparing a first wafer including an array of lens units; preparing a second wafer including an array of image sensor chip-scale packages (CSPs), each image sensor CSP including an image sensor chip corresponding to one of the lens units, wherein a ground pad is formed on the top surface of the image sensor chip and a through via connected to the ground pad is formed through the image sensor chip; stacking the first wafer on the second wafer; cutting the first wafer and the second wafer to form a trench exposing the ground pad on the top surface of the image sensor chip at an interface between adjacent lens units; filling the trench with a first material used for forming a camera module housing, wherein the first material includes a conductive material that contacts the ground pad, such that the camera module housing contacts the ground pad, and wherein the filling of the trench with the first material comprises filling the trench with the first material to an outer portion of the lens unit by which light is cut off so as to form an aperture in the lens unit; and cutting the first material and the image sensor chip at the interface between the adjacent lens units.