| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a planar magnetic element, for a noncontact charger, by which a small shape and a thin shape are satisfied and which can obtain satisfactory charging efficiency. SOLUTION: A planar coil is embedded on one face of a ferrite magnetic layer whose magnetic-substance volume density is 25% or more, in such a way that its surface is exposed.</p> |
