THIN FILM COIL, WIRELESS POWER RECEIVING DEVICE, ELECTRONIC APPARATUS, AND CASE ASSEMBLY

摘要

According to an embodiment of the present invention, disclosed are a thin coil, a wireless power receiving device, an electronic device, and a case assembly. A thin coil according to an embodiment of the present invention, as the thin coil equipped in the wireless power receiving device wirelessly receiving power or a wireless power transmitting device wirelessly transmitting power, includes: a substrate having a first surface and a second surface and formed into an insulating layer; a first spiral pattern spirally formed on the first surface of the substrate and of which at least some parts are formed into a form that multiple strands are connected in series; and a second spiral pattern spirally formed into the second surface of the substrate of which at least some parts are formed into a form that multiple strands are connected in series. The purpose of the present invention is to provide the thin coil capable of minimizing a loss.