Patent ID: 11967945
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic resonator, comprising:
a substrate;
a single-crystal piezoelectric layer comprising a supported portion and a diaphragm, wherein a surface of the supported portion is attached to a surface of the substrate directly or via one or more intermediate layers and the diaphragm is over a cavity of the acoustic resonator;
an interdigital transducer (IDT) at the piezoelectric layer, the IDT comprising a first busbar, a second busbar, and interleaved fingers extending alternately from the first and second busbars,
wherein overlapping portions of the interleaved fingers are disposed on the diaphragm, and
wherein at least portions of both the first and second busbars are disposed on the supported portion of the piezoelectric layer.