Patent ID: 9673778
Date: 2017-06-06
CPC Classifications: H03H

Claim:
1. A solid mount bulk acoustic wave resonator, comprising: a first electrode; a second electrode comprising a first surface disposed substantially at a first height; a piezoelectric layer disposed between the first and second electrodes; an acoustic reflector comprising a plurality of layers and disposed beneath the first electrode, the second electrode and the piezoelectric layer, a contacting overlap of the acoustic reflector, the first electrode, the second electrode and the piezoelectric layer defining an active area of the solid mount bulk acoustic wave resonator, and adjacent to a termination of the active area of the solid mount bulk wave acoustic resonator, the piezoelectric layer comprises a transition comprising defects, wherein the first electrode substantially covers the acoustic reflector, the piezoelectric layer extends over an edge of the first electrode, and the second electrode does not contact the transition; and a bridge comprising a second surface disposed substantially at a second height, which is higher than the first height, the bridge being disposed adjacent to a termination of the active area of the solid mount bulk acoustic wave resonator, and the bridge overlaps a portion of the first electrode.