Patent ID: 7462937

Claim:
A semiconductor device, comprising: a semiconductor substrate; an insulation layer disposed on the semiconductor substrate, the insulation layer including a groove formed therein from a second surface of the insulation layer, the second surface of the insulation layer being opposite from a first surface of the insulation layer facing the semiconductor substrate, a bottom surface of the groove being another surface of the insulation layer disposed between the first surface of the insulation layer and the second surface of the insulation layer; a conductive part disposed on the insulation layer, the conductive part including a wiring part extending along the groove, the wiring part having a u-shaped cross-section and being in contact with the bottom surface of the groove and side surfaces of the groove, the wiring part extending along the groove; an insulation film formed along the groove and over the wiring part, the insulation film insulating the wiring part from the second surface along the groove; and one of a through hole and a recessed part formed from the second surface of the insulation layer at an end of the groove, the one of the through hole and the recessed part communicating with the groove.