Patent ID: 7378326

Claim:
A process for manufacturing a printed circuit board having embedded capacitors therein, the process comprising steps of: forming first circuit layers, including bottom electrodes and circuit patterns, in outer layers of a double-sided copper-clad laminate; depositing alumina (Al 2 O 3 ) films on the first circuit layers by atomic layer deposition (ALD) to form dielectric layers thereon; forming second circuit layers including top electrodes and circuit patterns, on the dielectric layers; depositing one-sided copper-clad laminates on the second circuit layers; forming blind via-holes and through-holes in predetermined portions of the one-sided copper-clad laminates; and plating the blind via-holes and the through-holes to make connections between the layers, wherein the step of forming the dielectric layers further comprises the steps of: etching predetermined portions of the deposited alumina films to remove the remaining portions of the alumina films except for portions on the bottom electrodes; and filling the etched portions with an insulating material and planarizing the filled material.