Patent ID: 7548432
Filing Date: 2009-06-16
Classification: H01G,H01L,H05K

Abstract:
1. An embedded capacitor structure comprising: a main body; a ground conductive layer; a power conductive layer; at least one embedded capacitor including a first electrode layer, a dielectric layer, and a second electrode layer, formed in the main body; and at least one via electrical connection formed in the main body directly electrically connected to one of the ground conductive layer and the power conductive layer; wherein one of the first and second electrode layers is free from electrical connection to the ground conductive layer and the power conductive layer; wherein the other one of the first and second electrode layers is directly electrically connected to the ground conductive layer or the power conductive layer and is formed integral with said ground conductive layer or said power conductive layer and comprises first and second in-plane conductive portions separated by an in-plane non-conductive/dielectric portion therebetween, wherein a capacitance of said one of the first and second electrode layers free from electrical connection to the ground conductive layer or the power conductive layer is chosen for providing high frequency decoupling, and wherein a resistance, thickness, or both, of said one of said one of the first and second electrode layers free from electrical connection to the ground conductive layer or the power conductive layer are chosen for providing damping to suppress resonances due to a power plane cavity effect.