Patent ID: 7888606
Filing Date: 2011-02-15
Classification: H01L,H05K,Y10T

Abstract:
1. A printed circuit board comprising: a core substrate; an electronic device provided in the core substrate and having an electrode pad formed thereon; a passivation layer formed on the electronic device and on a first portion of a planar surface of said electrode pad; an intermediate layer formed directly on the electrode pad and on the passivation layer, the surface of the intermediate layer being larger than the surface of the electrode pad, and the intermediate layer comprising: a first interlayer insulating layer formed over the core substrate and the electronic device and having a first via hole opening therein; a first via hole structure formed in the first via hole opening of the interlayer insulating layer, wherein the intermediate layer establishes an electrical connection between the first via hole structure in the interlayer insulating layer and the electrode pad of the electronic device; a second interlayer insulating layer formed over the first interlayer insulating layer and the first via hole structure and having a second via hole opening therein; and a second via hole structure formed in the second via hole opening of the second interlayer insulating layer and electrically connected to the first via hole structure.