发明授权
US07626276B2 Method and apparatus for providing structural support for interconnect pad while allowing signal conductance
有权
用于在允许信号电导的同时提供用于互连焊盘的结构支撑的方法和装置
- 专利标题: Method and apparatus for providing structural support for interconnect pad while allowing signal conductance
- 专利标题(中): 用于在允许信号电导的同时提供用于互连焊盘的结构支撑的方法和装置
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申请号: US11750048申请日: 2007-05-17
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公开(公告)号: US07626276B2公开(公告)日: 2009-12-01
- 发明人: Kevin J. Hess , Susan H. Downey , James W. Miller , Cheng Choi Yong
- 申请人: Kevin J. Hess , Susan H. Downey , James W. Miller , Cheng Choi Yong
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理商 Robert L. King; Susan C. Hill
- 主分类号: H01L23/48
- IPC分类号: H01L23/48 ; H01L23/52 ; H01L29/40
摘要:
A method provides an interconnect structure having enhanced structural support when underlying functional metal layers are insulated with a low modulus dielectric. A first metal layer having a plurality of openings overlies the substrate. A first electrically insulating layer overlies the first metal layer. A second metal layer overlies the first electrically insulating layer, the second metal layer having a plurality of openings. An interconnect pad that defines an interconnect pad area overlies the second metal layer. At least a certain amount of the openings in the two metal layers are aligned to improve structural strength of the interconnect structure. The amount of alignment may differ depending upon the application and materials used. A bond wire connection or conductive bump may be used with the interconnect structure.
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