Patent ID: 9238576
Filing Date: 2016-01-19
CPC Classification: B81B,G01P,H03H

Claim Text:
1. A composite micro-electro-mechanical-system (MEMS) apparatus, comprising: a vibrating unit oscillating along a first axis, wherein the vibrating unit comprises: a stiffness element comprising a first surface, a second surface, and a third surface, wherein the first surface faces toward a first direction of the first axis and the second surface faces toward a second direction of the first axis, wherein the first direction is opposite to the second direction, and the third surface connects the first surface and the second surface; a first material disposed on the first surface and the second surface of the stiffness element; and a second material being a conductive material disposed on the first material and extending to the stiffness element, wherein the second material is electrically connected to the stiffness element, wherein, when a temperature changes, a variation direction of a Young's modulus of the first material is opposite to a variation direction of a Young's modulus of the stiffness element.