Patent ID: 7387958

Claim:
A method for forming a semiconductor structure, comprising: providing a single crystal wafer, such wafer having a plurality of MMIC chips, each one of the chips having: an active device formed in a first surface portion of a semiconductor substrate provided by the wafer and an electrical interconnect having a first portion thereof disposed on a second surface portion of the semiconductor substrate, such first surface portion and such second surface portion being on opposite surfaces of the substrate, such semiconductor substrate having a via therethrough, a second portion of the electrical interconnect passing through the via and being electrically connected to the active device; forming a multilayer interconnect structure on the wafer, such multilayer interconnect structure having a plurality of signal routing sections, each one of the signal routing sections being formed on the second surface portion of a corresponding one of the chips, each one of the sections having a plurality of dielectric layers and a plurality of electrical conductors, at least one of the electrical conductors being electrically coupled to the active device to route an electrical signal to such active device, separating each one of the plurality of chips and the corresponding one of the signal routing sections from the wafer.