Patent ID: 7183651
Filing Date: 2007-02-27
Classification: H01L,H05K

Abstract:
1. A system for decoupling power-ground voltages from a device in an electronic circuit, the system comprising: first, second, and third conducting layers each having a planar configuration, wherein the first and third conducting layers are at the same electric potential and the second conducting layer is at a different electric potential; wherein the device is positioned at a given location above a portion of the first conducting layer, wherein the device is electrically connected by a first connection to at least one of the first and third conducting layers and is electrically connected by a separate second connection to the second conducting layer; a first dielectric layer having a planar configuration between the first and second conducting layers, the first dielectric layer having a first dielectric constant; a second dielectric layer having a planar configuration between the second and third conducting layers, the second dielectric layer having a second dielectric constant, wherein the first and second dielectric constants are different; wherein a plurality of electrically conductive vias cut through the second conductive layer provide electrical contact between the first and third conducting layers and the first and second dielectric layers, wherein each via has a structure, wherein the plurality of vias are arranged in an array such that the vias surround the given location of the device underneath the portion of the first conducting layer, and wherein the array and the structures of the plurality of vias create a plurality of radii for the effective capacitance of the plurality of vias.