Patent ID: 7999650

Claim:
Coil device, comprising, a plurality of flat coils, a flat coil carry layer for carrying the flat coils arrayed in a plane, a first interconnection layer provided on one side of the flat coil carry layer, and a second interconnection layer provided on the other side of the flat coil carry layer, thereby achieving a parallel electrical connection of the flat coils arrayed in the plane between the first and the second interconnection layers, wherein, the flat coils are each composed of a laminated coil formed by stacking a plurality of basic conductor patterns in layers, the basic conductor patterns are each formed into a nearly S-shaped pattern having two spiral winding patterns configured by spirally winding prescribed turns a linear conductor in opposite direction about two paralleled axes, the two spiral winding patterns composing each of the basic conductor patterns are each formed into a regular triangular shape and are arranged in back to back manner with sharing each of outermost circumferential base side lines, thereby achieving the basic conductor pattern of rhombic S-shape as a whole.