Patent ID: 9735338
Date: 2017-08-15
CPC Classifications: H01L,H03H

Claim:
1. A resonator device comprising: a resonator component comprising: a piezoelectric layer, at least a portion of the piezoelectric layer being disposed between two electrodes, the piezoelectric layer having two defined regions, an active interior region and a perimeter collar region; a Bragg structure formed either above the piezoelectric layer, below the piezoelectric layer or both above and below the piezoelectric layer, wherein the Bragg structure has a lateral extent that is at least coextensive with the piezoelectric layer; and a dielectric spacer that defines the lateral extent of the active interior region, wherein the resonator component is disposed in a cavity defined by a cap structure, the cap structure having a first portion from which the resonator component is supported in the cavity on a suspended portion attached to a substrate and a second portion that is affixed to the first portion and surrounds the resonator component, but is not attached thereto, wherein the cap structure maintains the cavity surrounding the resonator component under resonator operating conditions.