Patent ID: 11888460
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An acoustic resonator device comprising:
a substrate;
a single-crystal piezoelectric plate coupled to the substrate and having a portion that spans a cavity;
a buried oxide layer between the substrate and the piezoelectric plate, wherein the substrate is attached to the piezoelectric plate via the buried oxide layer;
a conductor pattern at a surface of the piezoelectric plate, the conductor pattern comprising an interdigital transducer (IDT) having interleaved fingers at the portion of the piezoelectric plate that spans the cavity, wherein the substrate and the piezoelectric plate are a same material; and
at least one through hole extending through the portion of the piezoelectric plate that spans the cavity to the cavity.