Patent ID: 8810038
Filing Date: 2014-08-19
Classification: H01L,H05K

Abstract:
1. A semiconductor device comprising: a board; a power wire formed on the board; a signal wire formed on the board; a ground wire formed on the board; an insulating layer covering the signal wire, the power wire and the ground wire; and a metal film covering the insulating layer, wherein the power wire is connected to a power potential, the ground wire is connected to a ground potential, the metal film is segmented into a plurality of segments, the metal film covering the insulating layer covering the power wire and the signal wire is connected to the ground potential, and the metal film covering the insulating layer covering the ground wire is connected to the power potential, the board is formed with a plurality of signal wires, the two neighboring signal wires are differential wires, and the metal film is not formed on the insulating layer covering the differential wires.