Importance

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Abstract

A surface acoustic wave resonator device and manufacturing method therefor and filter, the surface acoustic wave resonator device includes: an interdigital transducer, disposed on a piezoelectric substrate and including first and second interdigital electrode lead-out parts, and first and second interdigital electrodes located in the body region and respectively connected to the first and second interdigital electrode lead-out parts; and a conductive structure, disposed on a side of the interdigital transducer away from the piezoelectric substrate, and at least includes a body structure and a first sawtooth structure, the body structure continuously extends across the interdigital electrodes in the second direction, the first sawtooth structure is located at a side of the body structure, and at least a portion of the body structure and the first sawtooth structure overlap with end portions of the interdigital electrodes close to a periphery region in the third direction.

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First Claim