Patent ID: 9728496
Date: 2017-08-08
CPC Classifications: H01L

Claim:
1. A method, comprising: providing a packaged device, the packaged device including at least one conductive ball; forming a molding compound over the packaged device and the conductive ball, wherein the molding compound encapsulates the conductive ball; removing a top surface of the molding compound to expose the conductive ball; removing a top portion of the conductive ball to form therein a concave depression; electrically connecting a redistribution layer feature to the concave depression of the conductive ball; forming a first passivation layer over the conductive ball, the first passivation layer having an opening therein exposing the top surface of the conductive ball; forming a conductive layer over the first passivation layer and extending into the opening; and patterning the conductive layer to form the redistribution layer feature.