Patent ID: 9567206
Date: 2017-02-14
CPC Classifications: B81B,B81C

Claim:
1. A micro-electro mechanical system (MEMS) device, comprising: a cap substrate; a MEMS substrate bonded with the cap substrate, wherein the MEMS substrate comprises at least one first movable element and at least one second movable element; a first closed chamber between the MEMS substrate and the cap substrate, wherein the first movable element is in the first closed chamber; an outgassing layer in the first closed chamber; a second closed chamber between the MEMS substrate and the cap substrate, wherein the second movable element is in the second closed chamber; and a blocking layer surrounding the first closed chamber and the second closed chamber, wherein the blocking layer extends towards the cap substrate and the MEMS substrate and surrounds sidewalls of the first closed chamber and the second closed chamber, and the blocking layer is configured to block gas outside of the first and the second closed chambers from entering the first closed chamber and the second closed chamber.