Patent ID: 8623768
Filing Date: 2014-01-07
Classification: B81B,B81C,G01P,H04R

Abstract:
1. A method comprising: forming a Micro-Electro-Mechanical System (MEMS) device on a front surface of a substrate, wherein the MEMS device comprises a capacitor; after the step of forming the MEMS device, etching a through-opening from a backside of the substrate to separate the substrate into a first portion and a second portion; etching an additional through-opening from the backside of the substrate to separate the substrate into the second portion and a third portion; filling the through-opening and the additional through-opening with a dielectric material, wherein the dielectric material insulates the first portion from the second portion, and the second portion from the third portion; and forming a first electrical connection and a second electrical connection on the backside of the substrate, wherein the first electrical connection and the second electrical connection are electrically coupled to a first capacitor plate and a second capacitor plate, respectively, of the capacitor through the first portion and the third portion, respectively, of the substrate.