Patent ID: 8629551
Filing Date: 2014-01-14
Classification: B81B,B81C,H01L,H04R,Y10T

Abstract:
1. A solder reflow surface mount microelectromechanical system (MEMS) microphone device comprising: a substrate having a planar upper surface and a planar lower surface, the upper surface having an interior region and a peripheral region that completely surrounds the interior region, each substrate further comprising: a MEMS microphone die mounted to the upper surface of the substrate and electrically coupled to at least one of the first plurality of metal pads on the upper surface of the substrate, the MEMS microphone die being disposed directly over the acoustic port in the substrate; and a single-piece cover that has a top region and a sidewall region, the sidewall region adjoining the top region at a substantially perpendicular angle and having a predetermined height, an exterior surface, an interior surface, and a bottom surface, wherein the bottom surface of the sidewall region is aligned with and attached to the peripheral region of the upper surface of the substrate, and wherein the predetermined height and interior surface of the sidewall region and interior surface of the top region, in cooperation with the interior region of the upper surface of the substrate, forms a protective enclosure for the MEMS microphone die that reduces electromagnetic interference and defines an acoustic chamber for the MEMS microphone die.