Patent ID: 7285844
Filing Date: 2007-10-23
Classification: B81B,G01C

Abstract:
1. A device package, comprising: a capping plate including at least one periphery seal ring and at least one internal seal ring bonded to a base plate including at least one periphery seal ring and at least one internal seal ring; wherein the periphery seal rings of the capping plate and base plate create a metal-to-metal seal surrounding the periphery of the package when the capping plate and the base plate are bonded together, the internal seal rings of the capping plate electrically connect to a plurality of via holes extending through to an external surface of the capping plate, the internal seal rings of the base plate provide an independent electrical path from a cavity in the capping plate outward towards a periphery of the base plate, and the internal seal rings of the capping plate and the base plate create a metal-to-metal seal within the periphery of the package when the base plate and the capping plate are bonded together.