POWER INDUCTOR AND MANUFACTURING METHOD THEREOF

摘要

Disclosed by the present invention is a power inductor which includes: an opening part which penetrate an insulating layer in an interlayer connection structure between an upper layer coil electrode pattern and a lower layer coil electrode pattern which are arranged to face both sides of the insulating layer for the interlayer connection of a coil electrode pattern without a separate via electrode while increasing the aspect ratio of the coil electrode pattern; the upper coil electrode pattern which is formed in the upper side of the insulating layer and has a winding form around the opening part; the lower layer coil electrode pattern which is formed in the lower side of the insulating layer and has a winding form around the opening part; and metal layers which are plated on the surface of the innermost pattern of the upper layer coil electrode pattern and the surface of innermost pattern of the lower layer coil electrode pattern. A metal layer plated on the surface of the innermost of the upper coil electrode pattern and a metal layer plated on the surface of the innermost pattern of the lower layer coil electrode pattern are mutually connected by being extended to the inner wall of the opening part.