Patent ID: 7745731

Claim:
A transmission cable having: a plurality of signal lines; a plurality of ground lines positioned between the signal lines; a first insulating layer having the signal lines and the ground lines formed on its one side; a first metal bump composed of a patterned first copper foil and embedded in the first insulating layer; and a first shield layer formed on the other side of the first insulating layer, wherein the ground lines are electrically connected with the first shield layer through the first metal bumps, wherein the first shield layer has a second copper foil and an etching stopper layer of which laminated on the second copper foil and connected to the first metal bump, and wherein the etching stopper layer is made of a material of which does not etched by alkaline etching fluid having pH 8 or lower, and the first metal bump is electrically connected to the second copper foil via the etching stopper layer.