Patent ID: 9156683
Filing Date: 2015-10-13
Classification: B81B,B81C

Abstract:
1. A method for producing a micro-electro-mechanical systems (MEMS) die, the method comprising: positioning a first material layer on a substrate; covering the first material layer with a lid layer, wherein a first cavity and a second cavity are defined in the first material layer beneath the lid layer, and wherein the lid layer comprises first vent holes in communication with the first cavity and second vent holes in communication with the second cavity; exposing at least the first cavity to a first atmosphere; sealing the first cavity while the first cavity is exposed to the first atmosphere while not sealing the second cavity, wherein sealing the first cavity comprises sealing the first vent holes while the first cavity is exposed to the first atmosphere; exposing at least the second cavity to a second atmosphere that is different than the first atmosphere; and sealing the second cavity while the second cavity is exposed to the second atmosphere, wherein sealing the second cavity comprises sealing the second vent holes while the second cavity is exposed to the second atmosphere.