- 专利标题: Segmented stress decoupling via frontside trenching
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申请号: US16929376申请日: 2020-07-15
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公开(公告)号: US11247895B2公开(公告)日: 2022-02-15
- 发明人: Florian Brandl , Robert Gruenberger , Wolfram Langheinrich
- 申请人: Infineon Technologies AG
- 申请人地址: DE Neubiberg
- 专利权人: Infineon Technologies AG
- 当前专利权人: Infineon Technologies AG
- 当前专利权人地址: DE Neubiberg
- 代理机构: Design IP
- 主分类号: H01L41/053
- IPC分类号: H01L41/053 ; B81B7/00
摘要:
A semiconductor device includes a first region; a second region that is peripheral to the first region; a substrate having a first surface and a second surface arranged opposite to the first surface; a stress-sensitive sensor disposed in the first region at the first surface of the substrate; a back end of line (BEOL) stack disposed on the first surface of the semiconductor chip that extends laterally from the MEMS element, in the first region, into the second region; a first cavity formed in the BEOL stack that exposes the sensitive area of the stress-sensitive sensor, wherein the first cavity extends entirely through the BEOL stack over the first region thereby exposing a sensitive area of the stress-sensitive sensor; and at least one stress-decoupling trench laterally spaced from the stress-sensitive sensor and laterally spaced from the first cavity with a portion of the BEOL stack interposed between.
公开/授权文献
- US20200346922A1 SEGMENTED STRESS DECOUPLING VIA FRONTSIDE TRENCHING 公开/授权日:2020-11-05
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