Patent ID: 7528420

Claim:
An image sensing device, comprising: a first substrate having a first side and a second side opposing each other; a plurality of image sensing elements formed in the first substrate at the first side; a plurality of microlenses formed over the image sensing elements in the first substrate at the first side, substantially aligning therewith; a conductive via formed through the first substrate, having a first surface exposed by the first substrate at the first side and a second surface exposed by the first substrate at the second side; a conductive pad formed over portions of the first substrate at the first side, overlying the conductive via and electrically connecting the image sensing elements; a conductive layer formed over portions of the first substrate at the second side thereof, overlying the conductive via and electrically connecting the conductive pad; a conductive bump formed over a portion of the conductive layer; and a second substrate bonded with the first substrate at the first side, wherein the second substrate is formed with a recess therein and thereby forms a cavity between the first and the second substrates, and the microlenses are encapsulated by the cavity.