Signal transmission device

A signal transmission device, at least comprising:

• a bus cable, formed by sequentially stacking a conductor layer, a metal layer and an insulation layer, wherein the conductor layer comprises a plurality of signal wires, each of the signal wires has a predetermined width, and each adjacent twos of the signal wires have a predetermined gap therebetween;
• a connector, comprising a top part and a bottom part connected to the top part;
• a plurality of conductive parts, wherein each two of the conductive parts have a specific gap therebetween, the conductive parts are disposed between the top part and the bottom part, each of the conductive parts has a first contact terminal and a second contact terminal thereon, and the contact terminals of the conductive parts electrically contact the metal layer;
• and
• a connection device, electrically connected to the bus cable, comprising a plurality of signal conduction wires and a plurality of ground wires, wherein a number of the signal conduction wires is equal to a number of the signal wires, the signal conduction wires electrically contact the signal wires one by one, a number of the ground wires is equal to a number of the conductive parts, and the second contact terminals of the conductive parts electrically contact the ground wires one by one.