Patent ID: 7955885
Filing Date: 2011-06-07
Classification: B81B,B81C

Abstract:
1. A method of forming a packaged micro-electromechanical device, comprising: forming a first substrate having a micro-electromechanical device therein adjacent a first surface thereof; bonding a first surface of a second substrate to the first surface of the first substrate; then selectively etching a second surface of the second substrate for a sufficient duration to define a through-substrate opening therein that exposes an electrode of the micro-electromechanical device; and filling the through-substrate opening with an electrically conductive through-substrate via that contacts the exposed electrode concurrently with forming a seal ring that extends on the first and second surfaces of the first and second substrates, respectively, and hermetically seals the first and second substrates together, by conformally depositing a metal layer onto the first and second substrates and then patterning the deposited metal layer into the through-substrate via and the seal ring.