Patent ID: 8723241

Claim:
A MEMS device integrated on a same substrate as an integrated circuit, comprising: a semiconductor substrate; a dielectric isolation layer disposed over the substrate; a proof mass disposed in a portion of the substrate; a flexible element disposed adjacent to the proof mass, the flexible element being attached to the proof mass so that a bottom surface of the flexible element is higher than a bottom surface of the proof mass; a piezoelectric element disposed on the dielectric isolation layer, so that at least a portion of the piezoelectric element overlaps the flexible element, the piezoelectric element including: a planar ferroelectric element having a perovskite structure; a first electrode having at least a portion disposed on one of a top or bottom surface of the ferroelectric element; and a second electrode having at least a portion disposed on the top surface of the ferroelectric element; a hydrogen barrier disposed over the piezoelectric element; a first contact establishing electrical connection to the first electrode; and a second contact establishing electrical connection to the second electrode.