BUMP JUNCTION AND ELECTRONIC COMPONENT

申请公布号：JP2001156207(A)

申请号：JP19990336057

申请日期：1999.11.26

申请公布日期：2001.06.08

申请人：

TOSHIBA CORP

发明人：KOMATSU IZURU;TADAUCHI KIMIHIRO;NAKAMURA SHINICHI;FUNAKURA HIROSHI;KAMATA SUSUMU

分类号：H01L23/12;H01L21/60;(IPC1-7):H01L23/12

主分类号：H01L23/12

摘要：PROBLEM TO BE SOLVED: To improve mechanical reliability of a bump junction by blocking the formation of a weak inter-metal compound composed of tin, gold and nickel by bonding zinc, which is concentrated on the surface of a solder ball, with the nickel plating when using tin/zinc solder. SOLUTION: By using a solder ball composed of solder alloy, which contains zinc, with tin as a substrate in place of tin/zinc solder constituting a conventional solder bump, a zinc layer concentrated on the surface of the solder ball is related to all junctions and blocks the reaction of tin, which forms the weak inter-metal compound.

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