Patent ID: 7973248

Claim:
A printed circuit board using paste bumps, the printed circuit board comprising: a core board; at least one via hole formed by perforating a portion of the core board; an inner layer circuit formed on at least one surface of the core board; a paste bump board, formed by printing at least one paste bump on a copper foil, setting the at least one paste bump, and afterwards stacking an insulation material on the copper foil for the at least one paste bump to penetrate the insulation material, and stacked on a surface of the core board; and an outer layer circuit formed on a surface of the paste bump board, wherein the at least one paste bump is joined in correspondence with a position of the at least one via hole, and the at least one via hole is filled by the at least one paste bump such that the core board radiates heat to an outside of the paste bump board through the at least one paste bump, an amount of the at least one paste bump is determined in correspondence with a size of the at least one via hole, a plating layer is formed on an inner perimeter of the at least one via hole such that the inner layer circuit and the outer layer circuit are electrically connected by the plating layer, and a thickness of the plating layer increases along its depth from an opening of the at least one via hole.