Patent ID: 8497434
Filing Date: 2013-07-30
Classification: H05K

Abstract:
1. A printed circuit board comprising: an insulating layer including a first surface and a second surface; a first circuit pattern and a second circuit pattern, the first circuit pattern and the second circuit pattern being buried in the first surface and the second surface of the insulating layer, respectively; a blind via, electrically connecting the first surface and the second surface by penetrating through the insulating layer, wherein an upper surface of the blind via and an upper surface of the first circuit pattern are placed on a same planar surface; a primer resin layer, stacked over the first surface of the insulating layer such that a portion of the upper surface of the first circuit pattern and the upper surface of the blind via are exposed; and a solder-resist layer, covering the primer resin layer, the first circuit pattern, and the blind via, wherein the solder-resist layer exposes a portion of the upper surface of the first circuit pattern, wherein the primer resin layer formed on the first surface of the insulating layer exposes the upper surface of the blind via.