Patent ID: 9673140
Date: 2017-06-06
CPC Classifications: H01L

Claim:
1. A method for fabricating a package structure, comprising the steps of: providing a carrier having a plurality of bonding pads; laminating a laminate on the carrier, wherein the laminate has a built-up portion and a release portion smaller in size than the built-up portion, the release portion covering the bonding pads and the built-up portion being laminated on the release portion and the carrier, wherein the release portion has a first metal layer and a second metal layer stacked on and in physical contact with one another, the first metal layer is bonded to the bonding pads and the carrier, and a projection area of the second metal layer in a top view is less than a projection area of the first metal layer in the top view; forming a plurality of conductive posts in the built-up portion; and removing the release portion and the built-up portion on the release portion such that a cavity is formed in the laminate to expose the bonding pads, the conductive posts being positioned around a periphery of the cavity.