WIRELESS CHARGING COIL, METHOD OF MANUFACTURING SAME, AND WIRELESS CHARGING DEVICE COMPRISING SAME

摘要

A wireless charging coil comprises: a first film having a plurality of via holes; a first coil unit arranged on a first surface of the first film; a second coil unit arranged on a second surface of the first film; connection units arranged in the plurality of via holes so as to connect the first coil unit and the second coil unit; and a first extension line extending from one end of the inner side of the first coil unit and overlapping the second coil unit. The first and the second coil unit may comprise at least one conductive layer. The first and the second coil unit may comprise a first conductive layer, a second conductive layer surrounding the first conductive layer, and a third conductive layer surrounding the second conductive layer.