- 专利标题: Mechanical wafer alignment detection for bonding process
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申请号: US17412596申请日: 2021-08-26
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公开(公告)号: US11688717B2公开(公告)日: 2023-06-27
- 发明人: Ching-Hung Wang , Yeong-Jyh Lin , Ching I Li , Tzu-Wei Yu , Chung-Yi Yu
- 申请人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 申请人地址: TW Hsinchu
- 专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人地址: TW Hsinchu
- 代理机构: Eschweiler & Potashnik, LLC
- 主分类号: H01L23/00
- IPC分类号: H01L23/00 ; H01L21/68
摘要:
Various embodiments of the present disclosure are directed towards a method for forming a semiconductor structure. The method includes loading a first wafer and a second wafer onto a bonding platform such that the second wafer overlies the first wafer. An alignment process is performed to align the second wafer over the first wafer by virtue of a plurality of wafer pins, where a plurality of first parameters are associated with the wafer pins during the alignment process. The second wafer is bonded to the first wafer. An overlay (OVL) measurement process is performed on the first wafer and the second wafer by virtue of the plurality of wafer pins, where a plurality of second parameters are associated with the wafer pins during the alignment process. An OVL shift is determined between the first wafer and the second wafer based on a comparison between the first parameters associated with the wafer pins during the alignment process and the second parameters associated with the wafer pins during the OVL measurement process.
公开/授权文献
- US20230066893A1 MECHANICAL WAFER ALIGNMENT DETECTION FOR BONDING PROCESS 公开/授权日:2023-03-02
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