Patent ID: 7579663
Filing Date: 2009-08-25
Classification: B81B,B81C,G01L,H01G,H01L

Abstract:
1. A plurality of vacuum or hermetic packaging enclosures formed on an IC wafer comprising a sidewall formed from an adhesive layer and a deposited film; a cap wafer formed from silicon or glass wafer; a substrate or bottom wafer formed from said IC wafer; wherein said adhesive layer is substantially flat and bonds a part of the bottom side of said cap wafer to a part of the top side of said substrate wafer, wherein said adhesive layer is a spacer creating a gap between said cap wafer and said substrate wafer, said adhesive layer is substantially removed from said enclosure and/or said sidewall to create cavity in said enclosure, said deposited film is a metal or a ceramic layer, wherein said deposited film directly adheres to the entire side surfaces of said enclosure, including the entire side surfaces of said cap wafer and said adhesive polymer layer, and at least a part of said top side surface of said substrate; said adhesive layer extends beyond the outer rim of said cap wafer, and said metal or ceramic layer does not cover said IC wafer completely.