PIEZOELECTRIC SENSING UNIT, PIEZOELECTRIC MICROPHONE, AND TERMINAL
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United States of America Patent
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Issued Date -
Oct 24, 2024
app pub date -
Jun 28, 2024
filing date -
Jun 28, 2024
priority date (Note) -
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Abstract
This application discloses a piezoelectric sensing unit, a piezoelectric microphone, and a terminal. The piezoelectric sensing unit includes a base, an auxiliary layer, a central film, a piezoelectric film, and a plurality of cantilevers. The base has a cavity extending in a first direction, the cavity forms a polygonal opening on a first surface of the base, and the polygonal opening has a first side and a second side that are adjacent to each other. The auxiliary layer is formed on the first surface of the base, the auxiliary layer includes a first auxiliary part, and the first auxiliary part is located in a region that is on the first surface and that is adjacent to the first side. The cantilevers are one-to-one connected to sides of the polygonal opening in one-to-one correspondence.
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