- 专利标题: Simultaneous plating of varying size features on semiconductor substrate
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申请号: US16703173申请日: 2019-12-04
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公开(公告)号: US11171006B2公开(公告)日: 2021-11-09
- 发明人: Mukta Ghate Farooq , James J. Kelly
- 申请人: International Business Machines Corporation
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Michael J. Chang, LLC
- 代理商 L. Jeffrey Kelly
- 主分类号: H01L21/44
- IPC分类号: H01L21/44 ; H01L21/288 ; H01L21/768 ; C25D17/00 ; C25D5/02 ; C25D7/12 ; H01L21/02
摘要:
Techniques for simultaneously plating features of varying sizes on a semiconductor substrate are provided. In one aspect, a method for electroplating includes: placing a shield over a wafer, offset from a surface of the wafer, which covers portions of the wafer and leaves other portions of the wafer uncovered; and depositing at least one metal onto the wafer by electroplating to simultaneously form metallurgical features of varying sizes on the wafer based on the shield altering local deposition rates for the portions of the wafer covered by the shield. An electroplating apparatus is also provided.
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