| 摘要 |
A device includes a metal pad, and a passivation layer including portions overlapping edge portions of the metal pad. A Post-Passivation-Interconnect (PPI) includes a trace portion overlying the passivation layer, and a pad portion connected to the trace portion. A polymer layer includes an upper portion over the PPI, and a plug portion extending into, and encircled by, the pad portion of the PPI. |
