- 专利标题: Electronic device having cobalt coated aluminum contact pads
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申请号: US16107545申请日: 2018-08-21
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公开(公告)号: US10714439B2公开(公告)日: 2020-07-14
- 发明人: Nazila Dadvand , Helmut Rinck
- 申请人: TEXAS INSTRUMENTS INCORPORATED
- 申请人地址: US TX Dallas
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas
- 代理商 Dawn Jos; Charles A. Brill; Frank D. Cimino
- 主分类号: H01L23/00
- IPC分类号: H01L23/00 ; H01L21/56 ; H01L21/78
摘要:
A system and method for bonding an electrically conductive mechanical interconnector (e.g., a bonding wire, solder, etc.) to an electrical contact (e.g., contact pad, termination on a printed circuit board (PCB), etc.) made from an electrically conductive metal (e.g., aluminum) on an electronic device (e.g., integrated circuit (IC), die, wafer, PCB, etc.) is provided. The electrical contact is chemically coated with a metal (e.g., cobalt) that provides a protective barrier between the mechanical interconnector and the electrical contact. The protective barrier provides a diffusion barrier to inhibit galvanic corrosion (i.e. ion diffusion) between the mechanical interconnector and the electrical contact.
公开/授权文献
- US20190109104A1 ELECTRONIC DEVICE HAVING COATED CONTACT PADS 公开/授权日:2019-04-11