Patent ID: 7203052

Claim:
A method of fabricating a MEMS tunable capacitor, comprising: forming an interlayer insulation layer on a substrate; forming fixed charge plates spaced apart from one another on the substrate by the interlayer insulation layer and arranged at a predetermined interval; forming a capacitor dielectric layer on the substrate having the fixed charge plates; sequentially forming a sacrificial layer and a molding layer on the capacitor dielectric layer; forming a supporter which penetrates the molding layer and the sacrificial layer and is fixed on the substrate; forming a spring structure and a movable charge plate structure defined in the molding layer, the spring structure connecting the supporter and the movable charge plate structure, and the movable charge plate structure includes movable charge plates respectively corresponding to the fixed charge plates and a connection part connecting the movable charge plates; and removing the molding layer and the sacrificial layer.