Patent ID: 8881381

Claim:
A method of manufacturing a printed circuit board, comprising: preparing a pair of a first carrier composed of a metal barrier layer and a first copper foil layer, wherein the metal barrier includes a first pattern formed on one side thereof; preparing a pair of a second carrier composed of a second copper foil layer, wherein the second copper foil layer includes a first solder resist layer and a second pattern sequentially formed on one side thereof; pressing one of the pair of the first carrier and one of the pair of the second carrier such that the first pattern is embedded in one side of a first insulation layer and the second pattern is embedded in the other side of the first insulation layer and then removing the one of the pair of the first carrier and the one of the pair of the second carrier to fabricate a first base substrate; pressing the other one of the pair of the first carrier and the other one of the pair of the second carrier such that the first pattern is embedded in one side of a second insulation layer and the second pattern is embedded in the other side of the second insulation layer and then removing the other one of the pair of the first carrier and the other one of the pair of the second carrier to fabricate a second base substrate; attaching the first base substrate and the second base substrate to each other using an adhesion layer such that the first solder resist layers face each other; and forming a via for connecting the first pattern with the second pattern in the first and second insulation layers, forming a second solder resist on the first and second insulation layers provided with the first pattern, and then removing the adhesion layer.