Patent ID: 9484883
Filing Date: 2016-11-01
CPC Classification: H01L,H03H,Y10T

Claim Text:
1. An acoustic wave device comprising: a substrate; an input pad that is located on a first surface of the substrate, and to which a high-frequency signal is input; a resonator that is connected to the input pad, and to which the high-frequency signal input to the input pad is input, the resonator including an electrode located in contact with the first surface of the substrate; an input line pattern that is located on the first surface of the substrate and that connects the resonator to the input pad; and an insulating layer that is located in an entire area under the input pad on the first surface of the substrate and in an entire area under the input line pattern on the first surface of the substrate, and that has a relative permittivity smaller than that of the substrate, the insulating layer being absent under the electrode included in the resonator on the first surface of the substrate and extending beyond edges of the input pad and the input line pattern.