Patent ID: 9194882
Filing Date: 2015-11-24
Classification: B81B,G01C,G01L,G01P

Abstract:
1. A MEMS sensor device comprising: a handle layer; a device layer located above the handle layer; a first fixed electrode defined in the device layer; a second fixed electrode defined in the device layer and electrically isolated from the first fixed electrode; a cap layer located above the device layer; a first movable electrode defined in the cap layer at a location directly above the first fixed electrode; a second movable electrode defined in the cap layer, at least partially directly above the second fixed electrode, and electrically isolated from the first movable electrode; a first void located directly between the first fixed electrode and the first movable electrode, the first void sealed from an atmosphere above the cap layer; and a second void located directly between the second fixed electrode and the second movable electrode, the second void open to the atmosphere.