Patent ID: 8810027

Claim:
A device, comprising: a first substrate including a first microelectromechanical system (MEMS) device and a second MEMS device; and a second substrate bonded to the first substrate, wherein the second substrate is bonded to the first substrate at a first bond ring, a second bond ring, and a third bond ring; wherein the first bond ring and the second bond ring encircle the first MEMS device and do not encircle the second MEMS device and the second bond ring encircles the first bond ring, wherein the first bond ring comprises a first eutectic bond and the second bond ring comprises a second eutectic bond, wherein the first eutectic bond is a Germanium (Ge) and Aluminum (Al) bond and the second eutectic bond is an Aluminum (Al) and amorphous-Silicon (a-Si) bond; and wherein the third bond ring encircles the first and second MEMS devices.