发明申请
US20060234423A1 System for providing a redistribution metal layer in an integrated circuit
有权
用于在集成电路中提供再分布金属层的系统
- 专利标题: System for providing a redistribution metal layer in an integrated circuit
- 专利标题(中): 用于在集成电路中提供再分布金属层的系统
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申请号: US11455503申请日: 2006-06-19
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公开(公告)号: US20060234423A1公开(公告)日: 2006-10-19
- 发明人: Danielle Thomas , Harry Siegel , Antonio Do Bento Vieira , Anthony Chiu
- 申请人: Danielle Thomas , Harry Siegel , Antonio Do Bento Vieira , Anthony Chiu
- 申请人地址: US TX Carrollton
- 专利权人: STMicroelectronics, Inc.
- 当前专利权人: STMicroelectronics, Inc.
- 当前专利权人地址: US TX Carrollton
- 主分类号: H01L21/00
- IPC分类号: H01L21/00
摘要:
A system and method is disclosed for providing a redistribution metal layer in an integrated circuit. The redistribution metal layer is formed from the last metal layer in the integrated circuit during manufacture of the integrated circuit before final passivation is applied. The last metal layer provides sites for solder bump pads used in flip chip interconnection. The redistribution metal layer can be (1) a flat layer deposited over the next to last metal layer through an opening in a dielectric layer, or (2) deposited over an array of vias connected to the next to last metal layer. Space between the solder bump pads is deposited with narrower traces for connecting active circuit areas below. A final passivation layer is deposited to ensure product reliability.
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