公开(公告)号：US20190035534A1

公开(公告)日：2019-01-31

申请号：US16046586

申请日：2018-07-26

Applicant: TDK CORPORATION

Inventor： Masanori SUZUKI ,  Kouji KAWAMURA ,  Naoaki FUJII ,  Manabu YAMATANI ,  Tomonaga NISHIKAWA

IPC: H01F27/28 ,  H01F27/32 ,  H01F41/04 ,  H01F41/12

Abstract: A coil component includes a plurality of conductor layers constituted of a first conductor layer to a fourth conductor layer that includes a function layer and a coil layer wound around an axis center; and a covering portion that is formed of an insulative resin, integrally covers the plurality of conductor layers, and is interposed between conductor layers adjacent to each other. The coil layer and the function layer of the plurality of conductor layers have substantially the same shape in a plan view. The fourth conductor layer has a connection conductor layer connecting the coil layer and the function layer to each other. A conductor layer having no connection conductor layer among the plurality of conductor layers has a protrusion portion corresponding to the connection conductor layer at a position overlapping the connection conductor layer in a plan view.

公开(公告)号：US20180358169A1

公开(公告)日：2018-12-13

申请号：US16000669

申请日：2018-06-05

Applicant: TDK CORPORATION

Inventor： Tomonaga NISHIKAWA ,  Tomokazu ITO ,  Manabu YAMATANI ,  Masanori SUZUKI ,  Ikuya KOKUBO ,  Takuya TAKEUCHI

IPC: H01F27/29 ,  H01F41/12 ,  H01F5/04 ,  H01F5/06

CPC classification number: H01F27/292 ,  H01F5/04 ,  H01F5/06 ,  H01F41/12

Abstract: Disclosed herein is a coil component that includes: a coil part in which a plurality of conductor layers and a plurality of interlayer insulting layers are alternately laminated, the coil part having a mounting surface substantially parallel to the lamination direction and an upper surface substantially parallel to the lamination direction and positioned on an opposite side to the mounting surface; and a direction mark comprising a conductive material that covers a part of the conductor layers exposed on the upper surface.