Patent ID: 8093147

Claim:
A wiring forming method of a semiconductor substrate, comprising: a step of forming an aggregate structure of carbon fibers, organized by a plurality of carbon fibers, on electrodes provided on the semiconductor substrate; a step of bonding the electrodes to the aggregate structure of the carbon fibers; a step of forming a conductive material on the aggregate structure of the carbon fibers; a step of forming the aggregate structure of the carbon fibers on the conductive material; and a step of bonding the conductive material to the aggregate structure of the carbon fibers, wherein the carbon fibers of the aggregates of the carbon fibers are aligned in lengthwise direction of the aggregate of the carbon fibers, a density of the carbon fibers at one side end is different from a density of the carbon fibers at the other side end, and the carbon fibers at the other side end having the higher density than the density of the carbon fibers at one side end are so formed as to be tightly fitted to each other.