ACOUSTIC WAVE DEVICE
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United States of America
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Issued Date -
Mar 6, 2025
app pub date -
Nov 18, 2024
filing date -
Nov 18, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
An acoustic wave device includes a support, a piezoelectric layer including first and second main surfaces, and an IDT electrode including first and second busbar portions, and first and second electrode fingers connected to the first and second busbar portions and being interdigitated with each other. A region in which first and second electrode fingers adjacent to each other overlap each other is an intersection region. A cavity portion is provided in the support and overlaps the intersection region. At least one of the first and second busbar portions includes an outer busbar not overlapping the cavity portion, and at least one of protruding electrodes extending from the outer busbar toward the intersection region. The at least one protruding electrode overlaps an outer peripheral edge of the cavity portion.
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