Patent ID: 11878905
Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  G  H | IPC B  G

Claim 0:
1. A micro-electromechanical system device comprising:
a substrate, comprising a first surface and a second surface opposite to the first surface;
a cavity disposed in the substrate, extending between the first surface and the second surface;
an interconnection structure disposed on the first surface of the substrate, over the cavity, the interconnection structure comprising a suspended region corresponding to the cavity and a penetrating hole in the suspended region, wherein a first end of the suspended region is closed to the penetrating hole and is not connected to the substrate; and
a proof mass disposed on the interconnection structure, wherein the proof mass is partially suspended over the interconnection structure, the proof mass further comprises a base layer and a mass layer, and the base layer comprises a dielectric material, wherein at least one end of the proof mass is suspended over the interconnection structure.