Patent ID: 9197185
Filing Date: 2015-11-24
Classification: H03H

Abstract:
1. An acoustic resonator device, comprising: a substrate: a first composite electrode disposed over the substrate, the first composite electrode comprising first and second electrically conductive layers and a first temperature compensating layer disposed between the first and second electrically conductive layers, wherein the second electrically conductive layer forms a first electrical contact with the first electrically conductive layer on at least one side of the first temperature compensating layer, the first electrical contact electrically shorting a first capacitive component of the first temperature compensating layer; a piezoelectric layer disposed over the first composite electrode; a second composite electrode disposed over the piezoelectric layer, the second composite electrode comprising third and fourth electrically conductive layers and a second temperature compensating layer disposed between the third and fourth electrically conductive layers, wherein the fourth electrically conductive layer forms a second electrical contact with the third electrically conductive layer on at least one side of the second temperature compensating layer, the second electrical contact electrically shorting a second capacitive component of the second temperature compensating layer; and an acoustic reflector disposed beneath the first composite electrode.