ACOUSTIC WAVE DEVICE
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United States of America Patent
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Issued Date -
May 16, 2024
app pub date -
Jan 26, 2024
filing date -
Sep 29, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
In an acoustic wave device, a first IDT electrode is provided on a first main surface of a piezoelectric film, and a second IDT electrode is provided on a second main surface of the piezoelectric film. A crystal c-axis of the piezoelectric film is tilted with respect to a direction normal to the first and second main surfaces. A direction of an electric field generated between a busbar of a comb-shaped electrode and end portions of electrode fingers facing the busbar in the first IDT electrode and a direction of an electric field generated between a busbar and end portions of electrode fingers facing the busbar in the second IDT electrode are opposite directions.
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