Patent ID: 7271487

Claim:
A semiconductor device in which a second conductive layer is connected through a connection pillar, to a first conductive layer embedded in a groove formed in an insulation film, wherein: said connection pillar is formed directly on a surface of said first conductive layer and exhibits a crystallographical alignment to the first conductive layer and a mechanical strength effected by being grown from the surface of the first conductive layer without use of a growth guide at a direction of a width of the first conductive layer such that the connection pillar, the connection pillar having a width that is aligned to the width of the first conductive layer, the width of the connection pillar being effected without use of the growth guide, said second conductive layer is formed on a surface of the connection pillar opposite the first conductive layer, the first conductive layer and the connection pillar are made of the same metal or the same metal or the same alloy thereof having the above-mentioned face-centered cubic structure, the first conductive layer is the lower layer wiring, and the second conductive layer is upper layer, and the first conductive layer and the connection pillar have a <111> preferred orientation.