Patent ID: 11929735
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic resonator device comprising:
a substrate having a surface;
a single-crystal piezoelectric layer attached either directly or via one or more intermediate layers to the surface of the substrate, the single-crystal piezoelectric layer having a portion that forms a diaphragm over a cavity, the diaphragm having an edge at a portion of a perimeter of the cavity; and
an interdigital transducer (IDT) at a surface of the single-crystal piezoelectric layer and having a pair of busbars that extend in a direction parallel to each other and a plurality of interleaved fingers that extend from each of the pair of busbars in a first direction and on the diaphragm,
wherein the IDT is configured to excite a primary shear acoustic mode in the diaphragm in response to a radio frequency signal applied to the IDT, and
wherein at least a portion of the edge of the diaphragm extends at an angle that is oblique to the first direction in which the interleaved fingers extend on the diaphragm.