| 摘要 |
The present invention relates to a coil installed in a cover case on a rear side of a smart phone and used for cordless charging and to a multilayer type coil for cordless charging which laminates coils for cordless charging in a multilayer type to be processed to overlap each other to obtain a superior current property and enable 90% per hour of charging efficiency, thereby manufacturing the multilayer type coil to have a thickness of 0.35mm or thinner. |
