发明授权
US08716858B2 Bump structure with barrier layer on post-passivation interconnect 有权
在钝化后互连上具有阻挡层的凹凸结构

Bump structure with barrier layer on post-passivation interconnect
摘要:
A semiconductor device includes a barrier layer between a solder bump and a post-passivation interconnect (PPI) layer. The barrier layer is formed of at least one of an electroless nickel (Ni) layer, an electroless palladium (Pd) layer or an immersion gold (Au) layer.
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