- 专利标题: Misregistration target having device-scaled features useful in measuring misregistration of semiconductor devices
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申请号: US16964714申请日: 2020-06-25
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公开(公告)号: US11532566B2公开(公告)日: 2022-12-20
- 发明人: Roie Volkovich , Liran Yerushalmi , Raviv Yohanan , Mark Ghinovker
- 申请人: KLA CORPORATION
- 申请人地址: US CA Milpitas
- 专利权人: KLA CORPORATION
- 当前专利权人: KLA CORPORATION
- 当前专利权人地址: US CA Milpitas
- 代理机构: Hodgson Russ LLP
- 国际申请: PCT/US2020/039475 WO 20200625
- 国际公布: WO2021/211154 WO 20211021
- 主分类号: H01L23/544
- IPC分类号: H01L23/544 ; G01B21/22 ; G03F7/20
摘要:
A target and method for using the same in the measurement of misregistration between at least a first layer and a second layer formed on a wafer in the manufacture of functional semiconductor devices on the wafer, the functional semiconductor devices including functional device structures (FDSTs), the target including a plurality of measurement structures (MSTs), the plurality of MSTs being part of the first layer and the second layer and a plurality of device-like structures (DLSTs), the plurality of DLSTs being part of at least one of the first layer and the second layer, the DLSTs sharing at least one characteristic with the FDSTs and the MSTs not sharing the at least one characteristic with the FDSTs.
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