Patent ID: 8502329
Filing Date: 2013-08-06
Classification: B81C,H01G,H04R

Abstract:
1. A Micro-Electro-Mechanical Systems (MEMS) device, comprising: a substrate, having a diaphragm opening at a diaphragm region; a supporting layer, being conductive without dielectric material, disposed over the substrate to cover the diaphragm opening, wherein a first side of the supporting layer is exposed to the diaphragm opening, wherein the supporting layer has a plurality of through holes within the diaphragm region, so that the through holes of the supporting layer are connected with the diaphragm opening; a first dielectric structural layer, disposed on a second side of the supporting layer, wherein the first dielectric structural layer has a plurality of openings corresponding to the through holes, wherein each of the through holes remains exposed by the first dielectric structural layer; a second dielectric structural layer with a chamber, disposed over the first dielectric structural layer, wherein the chamber exposes the openings of the first dielectric structural layer; and a MEMS diaphragm, embedded in the second dielectric structural layer above the chamber, wherein an air gap is formed between the supporting layer and the MEMS diaphragm.