Patent ID: 8575766

Claim:
A microelectronic assembly comprising: a semiconductor die having microelectronic circuitry thereon, the semiconductor die having a front surface and a rear surface remote therefrom, and one or more surface conductive elements each having a planar surface parallel to the front surface, and device contacts exposed at the front surface; an interconnection element including a dielectric element underlying the rear surface of the semiconductor die, the interconnection element having a plurality of element contacts thereon; a plurality of raised conductive elements connecting the device contacts with the element contacts, the raised conductive elements having substantial portions extending in runs spaced a first height above the front surface and above the one or more surface conductive elements and at least generally parallel to the one or more surface conductive elements such that the one or more surface conductive elements are between the semiconductor die and the raised conductive elements, wherein the one or more surface conductive elements is connectable to a source of reference potential, such that a desired impedance is achieved for the raised conductive elements and the one or more surface conductive elements is a conductive plane.