公开(公告)号：US11848147B2

公开(公告)日：2023-12-19

申请号：US16850891

申请日：2020-04-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yoshifumi Maki ,  Reiichi Matsuba ,  Takashi Sukegawa ,  Yasuhiro Itani ,  Takanori Suzuki ,  Yuuki Kitadai

IPC: H01F27/29 ,  H01F41/04 ,  H01F27/24 ,  H01F27/28

CPC classification number: H01F27/292 ,  H01F27/24 ,  H01F27/2823 ,  H01F41/04 ,  Y10T29/53178

Abstract: A coil component includes a core including a winding core portion and a first flange portion, a first wire and a second wire that are wound around the winding core portion in the same direction, and a first terminal electrode that is disposed on the first flange portion and that is connected to a first end portion of the first wire. The shape of an outer edge of the first terminal electrode includes a convex curve.

公开(公告)号：US11217388B2

公开(公告)日：2022-01-04

申请号：US16006592

申请日：2018-06-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasuhiro Itani ,  Hiroki Hashimoto ,  Masayuki Oishi

IPC: H01F17/00 ,  H01F41/04 ,  H01F27/24 ,  H01F27/28

Abstract: A multilayer inductor manufacturing method includes stacking a first coil conductor layer on a first magnetic layer; stacking a first burn-away material on side surfaces of the first coil conductor layer; stacking a second magnetic layer on the first burn-away material and first magnetic layer; stacking a second burn-away material on the second magnetic layer laterally outside an upper surface of the first coil conductor layer; stacking a second coil conductor layer on the upper surface of the first coil conductor layer and second burn-away material; stacking a third burn-away material on side surfaces and an upper surface of the second coil conductor layer; stacking a third magnetic layer on side surfaces of the third burn-away material and the second magnetic layer; stacking a fourth magnetic layer on the third burn-away material and the third magnetic layer; and burning away the first, second, and third burn-away materials via firing.

公开(公告)号：US11145453B2

公开(公告)日：2021-10-12

申请号：US16175585

申请日：2018-10-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Oishi ,  Yasuhiro Itani ,  Hiroki Hashimoto ,  Takuma Shiro

IPC: H01F27/29 ,  H01F27/28 ,  H01F17/00 ,  H01F41/04

Abstract: A coil component includes an element and a coil that is provided inside the element and that is spirally wound. The coil includes a plurality of coil conductor layers and an extended conductor layer, which are laminated in a first direction. The extended conductor layer overlaps a side gap portion, which is situated on an outer side of a region of the element that is surrounded by the coil conductor layers, and extends so as to reach an outer surface of the element. The element includes a first stress relaxation layer that contacts the coil conductor layers, and a second stress relaxation layer that, while extending along the extended conductor layer, contacts a coil-conductor-layer side of the extended conductor layer, and is positioned inside the side gap portion without reaching the outer surface of the element.