ACOUSTIC WAVE DEVICE AND MANUFACTURING METHOD FOR ACOUSTIC WAVE DEVICE
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Apr 10, 2024
filing date -
Apr 10, 2024
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Abstract
An acoustic wave device includes a piezoelectric substrate including first and second main surfaces, a mounting substrate including third and fourth main surfaces, a functional electrode on the first main surface to perform electromechanical conversion with the piezoelectric substrate, first and second plane electrodes on the first main surface and connected to the functional electrode, and a third plane electrode on the first main surface and in contact with an end side of the piezoelectric substrate, and not connected to the functional electrode and the plane electrode, and bump electrodes bonded to the first and third main surfaces. A maximum distance D13max between two end portions of the third plane electrode is smaller than a minimum distance D1min of distances between two of the first and second plane electrodes having different potentials from each other.
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