Patent ID: 8921203
Filing Date: 2014-12-30
Classification: B81B,G01P,H01L

Abstract:
1. A method, comprising: providing a substrate having a first major surface and a second major surface; removing a first portion of the substrate to form a cavity at the first major surface of the substrate; bonding the first major surface of the substrate to a carrier substrate after forming the cavity; reducing a thickness of the substrate such that the substrate has a first thickness between the second major surface and a bottom of the cavity and a second thickness between the first major surface and the second major surface after the thickness is reduced, the first thickness less than the second thickness; forming a first accelerometer device at the second major surface such that at least a portion of the first accelerometer device is over the cavity; and forming a second accelerometer device at the second major surface such that the second accelerometer device is not disposed over the cavity.