Patent ID: 9562926
Date: 2017-02-07
CPC Classifications: G01P

Claim:
1. An MEMS device, comprising: a substrate; a proof mass, including a first movable electrode and a second movable electrode for sensing movements along first and second directions, respectively, wherein the proof mass further includes a hollow space inside; a spring, a spring anchor, a first electrode anchor, and a second electrode anchor, which are located in the hollow space, wherein the proof mass is connected to the substrate through the spring and the spring anchor; and a first fixed electrode and a second fixed electrode, respectively connected to the substrate through the first electrode anchor and the second electrode anchor, the first fixed electrode and the first movable electrode forming a first capacitor, and the second fixed electrode and the second movable electrode forming a second capacitor, wherein the first capacitor and the second capacitor are used for sensing movements of the proof mass along the first and second directions, respectively; wherein there is neither any portion of the proof mass nor any portion of any fixing electrode connected between the spring and the spring anchor.