发明授权
- 专利标题: Temperature coefficient of offset compensation for force sensor and strain gauge
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申请号: US18103465申请日: 2023-01-30
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公开(公告)号: US11898918B2公开(公告)日: 2024-02-13
- 发明人: Julius Minglin Tsai , Dan Benjamin
- 申请人: NextInput, Inc.
- 申请人地址: US CA Mountain View
- 专利权人: NextInput, Inc.
- 当前专利权人: NextInput, Inc.
- 当前专利权人地址: US CA Mountain View
- 代理机构: Withrow & Terranova, P.L.L.C.
- 主分类号: G01L1/22
- IPC分类号: G01L1/22 ; G01L1/16 ; G01L1/18
摘要:
MEMS force sensors for providing temperature coefficient of offset (TCO) compensation are described herein. An example MEMS force sensor can include a TCO compensation layer to minimize the TCO of the force sensor. The bottom side of the force sensor can be electrically and mechanically mounted on a package substrate while the TCO compensation layer is disposed on the top side of the sensor. It is shown the TCO can be reduced to zero with the appropriate combination of Young's modulus, thickness, and/or thermal coefficient of expansion (TCE) of the TCO compensation layer.
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