Patent ID: 6853054
Filing Date: 2005-02-08
Classification: H01L

Abstract:
1. A multilayered wiring structure for high frequency semiconductor devices, comprising: a semiconductor substrate; a ground plate formed above said semiconductor substrate, having a potential fixed at the ground potential; a plurality of wiring layers, each of which is alternately stacked with an insulating interlayer formed above said semiconductor substrate, the wiring layers combining with said ground plate to form transmission lines; and at least one separation plate being stacked between the wiring layers which mutually cross, with insulating interlayers formed therebetween, said at least one separation plate having a potential fixed at the ground potential, wherein said at least one separation plate is selectively provided at a crossing portion where the wiring layers mutually cross, said multilayered wiring structure further including additional crossing portions where the wiring layers mutually cross, wherein each of the crossing portions has an individual separation plate, wherein the separation plate are electrically interconnected, and wherein the separation plates are provided on different insulating interlayers, and are electrically interconnected by at least one through-hole.