Patent ID: 6284567
Filing Date: 2001-09-04
Classification: B81B,G01P

Abstract:
A method for packaging a microsensor, comprising the steps of:etching a structure installing part of a device wafer so as to install a structure on a surface of said device wafer, and then, forming a sacrificial layer on said part thus etched;forming a cavity in a separate package wafer;bonding said package wafer onto a surface electrode of said device wafer thus manufactured;forming a contact hole in said package wafer, for connecting patterns of said device wafer and said package wafer together; anddepositing a metal on an inside of said contact hole of said package wafer by applying a sputtering process,wherein a round part is formed on a lower portion of said contact hole of said package wafer, and thus, a metal deposition layer forms a continuity at said round part where said metal deposition layer contacts to said surface electrode of said device wafer.