Patent ID: 7095118
Filing Date: 2006-08-22
Classification: H01L

Abstract:
1. A high-frequency semiconductor device comprising: a semiconductor substrate having a main surface; a first wiring provided over said main surface of said semiconductor substrate; and a grounding conductor layer continuously covering a periphery of said first wiring with a first insulator interposed therebetween in a section crossing a direction of extension of said first wiring, wherein said grounding conductor layer transmits a grounding potential and said grounding conductor layer includes a first portion constituted by only one unit covering an upper surface and two side surfaces of said first wiring and a second portion covering a bottom surface of said first wiring and wherein said first wiring is electrically connected to said semiconductor substrate through a conductor plug filled in a through hole selectively formed in said grounding conductor layer with a side insulating film interposed therebetween in a part taken in said direction of extension of said first wiring.