MEMS SENSOR AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Mar 21, 2024
app pub date -
Sep 8, 2023
filing date -
Sep 15, 2022
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Abstract
The present disclosure provides a MEMS sensor. The MEMS sensor includes a first substrate having a cavity and a second substrate bonded to the first substrate. The first substrate is provided with an electrode movably disposed in the cavity and a sealed member coupling to the second substrate. The second substrate is provided with a stop member for restricting a movement of the electrode toward the second substrate and a sealing member coupling to the sealed member. The sealed member is formed by a first metal layer on the first substrate. The sealing member is formed by a second metal layer on the second substrate. A polycrystalline layer is formed on the stop member. The polycrystalline layer is disposed between the second substrate and the second metal layer.
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