Patent ID: 8169286

Claim:
A coil unit comprising: a planar coil having a transmission side and a non-transmission side; a printed circuit board that includes a planar coil placement section that receives the planar coil so as to reduce a thickness of the coil unit by a thickness of the planar coil; and a magnetic sheet that is provided on the non-transmission side of the planar coil, the planar coil placement section being a first hole formed through the printed circuit board in a thickness direction, the hole having a shape that corresponds to an external shape of the planar coil, the planar coil being formed by winding a coated coil wire in a plane and having an air-core section, an inner terminal, an outer terminal, a first lead line connected to the inner terminal and a second lead line connected to the outer terminal, the first lead line being provided over the non-transmission side of the planar coil, the printed circuit board having a lead line placement section that receives the first lead line and the second lead line, the lead line placement section being a second hole formed through the printed circuit board in the thickness direction, the second hole of the lead line placement section being continuous with the first hole of the planar coil placement section, and the printed circuit board having a first electrode and a second electrode on a surface that is the same side as the non-transmission side of the planar coil, the first electrode being connected to the first lead line and the second electrode being connected to the second lead line.