Invention Application
US20130168851A1 BUMP STRUCTURE AND ELECTRONIC PACKAGING SOLDER JOINT STRUCTURE AND FABRICATING METHOD THEREOF 有权
焊接结构和电子包装焊接接头结构及其制造方法

BUMP STRUCTURE AND ELECTRONIC PACKAGING SOLDER JOINT STRUCTURE AND FABRICATING METHOD THEREOF
Abstract:
A bump structure includes a substrate, a pad, an electrode and a protruding electrode. The pad is disposed on the substrate. The electrode is formed by a first metal material and disposed on the pad. The protruding electrode is formed by a second metal material and disposed on the electrode, wherein a cross-sectional area of the protruding electrode is less than a cross-sectional area of the electrode.
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