Package having bond-sealed underbump

摘要

A package for containing microelectromechanical devices includes a first substrate wafer, and a second substrate wafer made of an optical quality material. An underbump is interposed between the first and second substrate wafers. The underbump is composed of a standoff region and a localized bond region. The first and second substrate wafers and the underbump define a chamber that contains at least one microelectronic device.