Patent ID: 9598276
Date: 2017-03-21
CPC Classifications: B81B,B81C,G01L,G01P

Claim:
1. A method for forming a MEMS device, comprising: providing a substrate including integrated circuits therein; forming a first dielectric layer on the substrate; forming one or more first metal connections and second metal connections in the first dielectric layer, wherein the first metal connections and the second metal connections are electrically connected to the integrated circuits; forming a second dielectric layer on the first dielectric layer; forming an acceleration sensor within the second dielectric layer, the acceleration sensor being electrically connected to one or more first metal connections, wherein the acceleration sensor includes a first sub-acceleration sensor including overhung arms and fixed electrodes arranged along a first direction and a second sub-acceleration sensor including the overhung arms and the fixed electrodes arranged along a second direction, wherein the second direction is perpendicular to the first direction; forming one or more first metal vias in the second dielectric layer, the first metal vias being electrically connected to the second metal connections; and forming a pressure sensor vertically above the second dielectric layer containing the acceleration sensor, the pressure sensor being electrically connected to the first metal vias.