Patent ID: 9061893
Filing Date: 2015-06-23
Classification: B81B,B81C,H01L,H04R,Y10T

Abstract:
1. A method for manufacturing a plurality of solder reflow surface mount microelectromechanical system (MEMS) microphones, the method comprising: providing an unsingulated panel comprised of a plurality of individual lids, wherein each lid has top and bottom surfaces and comprises at least one conductive layer, at least one non-conductive layer, and an acoustic port, wherein the at least one conductive layer comprises the bottom surface of the lid, and wherein the bottom surface has an attachment region and an interior region, the attachment region positioned between the interior region and the edges of the lid, and completely bounding the interior region; providing an unsingulated panel comprised of a plurality of individual sidewall spacers, wherein each sidewall spacer has top and bottom surfaces and comprises at least two conductive layers with a center layer of non-conductive material having a predefined thickness disposed between the two conductive layers, wherein one conductive layer comprises the top surface of the sidewall spacer and the other conductive layer comprises the bottom surface of the sidewall spacer, and wherein the sidewall spacer further comprises an opening having walls covered with conductive material, and the opening walls extend through the center layer to the top surface and the bottom surface; providing an unsingulated panel comprised of a plurality of individual substrates, wherein each substrate comprises: mounting a MEMS microphone die on the top surface of the base layer of each individual substrate in the unsingulated panel of individual substrates, and electrically coupling each MEMS microphone die to at least one of the first plurality of metal pads on the top surface of the base layer of its respective substrate in the unsingulated panel of substrates; attaching the unsingulated panel of substrates, the unsingulated panel of sidewall spacers and the unsingulated panel of lids to each other in a predetermined order; singulating the attached panels into a plurality of individual MEMS microphones, wherein each substrate, and its respective sidewall spacer and lid cooperatively form a housing that has surfaces substantially perpendicular to the bottom surface of the substrate.