Patent ID: 6953993

Claim:
An acceleration sensor comprising: a substrate; a sensing element formed on said substrate; a polysilicon bonding frame formed on said substrate, said polysilicon bonding frame surrounding said sensing element in plan view; a cap which includes an end face bonded to a top surface of said polysilicon bonding frame, to cover said sensing element above said sensing element while being spaced by a predetermined distance from said sensing element; a metal film formed on a surface of said cap which faces said sensing element, a portion of said metal film being bonded to said polysilicon bonding frame; a first pad formed on said substrate, said first pad being electrically connected to said sensing element via a first interconnect line; a second pad electrically connected to said substrate; and a third pad formed on said substrate, said third pad being electrically connected to said polysilicon bonding frame via a second interconnect line.