STACKED PACKAGE STRUCTURE FOR REDUCING PACKAGE VOLUME OF AN ACOUSTIC MICRO-SENSOR

摘要

A stacked package structure utilizes flip-chip technology to stack an acoustic micro-sensor on an integrated circuit (IC) device having a recess as a back chamber and cover the acoustic micro-sensor using a glass substrate or a planar substrate with an aperture. With the use of the stacked package structure, the package volume of the acoustic micro-sensor can be reduced effectively.