Patent ID: 9586815
Date: 2017-03-07
CPC Classifications: B81B,B81C

Claim:
1. A micro-electromechanical apparatus, being adapted to measuring a pressure and an inertial physical quantity, the micro-electromechanical apparatus comprising: a substrate, having a first surface; a first cover, disposed on the substrate and having a top wall and a side wall, wherein the top wall and the side wall of the first cover are integrally formed, and the side wall of the first cover is connected to the substrate so the first cover and the substrate define a first hermetically sealed chamber; a sensing unit, comprising a movable mass suspended over the substrate; and a second cover, disposed on the substrate, wherein the second cover and the substrate define a second hermetically sealed chamber, wherein the first cover covers a lateral portion and an upper surface of the movable mass, the side wall of the first cover surrounds the movable mass, and the sensing unit is enclosed by the first hermetically sealed chamber and is disposed outside the second hermetically sealed chamber.