公开(公告)号：US20230170117A1

公开(公告)日：2023-06-01

申请号：US17992292

申请日：2022-11-22

Applicant: TDK CORPORATION

Inventor： Yuya OSHIMA ,  Kenji KOMORITA ,  Takehiro ISHII ,  Kouichi KAKUDA ,  Shigeshi OSAWA ,  Yusaku ABE ,  Tsubasa OZAWA ,  Midori KISHIMOTO ,  Makoto YOSHINO ,  Koki ITO ,  Masato KUDOU

IPC: H01F5/00 ,  H01F5/04

CPC classification number: H01F5/003 ,  H01F5/04

Abstract: In a multilayer coil component, a plurality of coil conductors are stacked in a coil axis direction. A connecting conductor connects the coil conductors adjacent to each other in the coil axis direction. First, second, and third coil conductors are arranged in order in the coil axis direction. A main body portion extends in a circumferential direction of the coil axis. Pad portions are connected to the main body portion, are connected to the first coil conductor via the connecting conductor, overhang from the third coil conductor in a direction away from the coil axis when viewed from the coil axis direction, and are inclined with respect to a virtual plane orthogonal to the coil axis direction.

公开(公告)号：US20220319766A1

公开(公告)日：2022-10-06

申请号：US17701448

申请日：2022-03-22

Applicant: TDK CORPORATION

Inventor： Akihiko OIDE ,  Makoto YOSHINO ,  Tomoki OKADA ,  Hideki SAITOU ,  Seiji OSADA ,  Kazuhiro EBINA ,  Kunio ODA ,  Takashi ABE ,  Akio SHIBATA ,  Kazuo IWAI

IPC: H01F27/29 ,  H01F17/00

Abstract: In the multi-layer coil component, the via conductor electrically connecting the coil layers adjacent to each other in the stacking direction of the element body protrudes from the coil region toward the side surface of the element body when viewed from the stacking direction of the element body. Therefore, the coil has a concave-convex portion. When a force is applied to the multi-layer coil component from the outside, the force is dispersed in the concave-convex portion of the coil, and thus defects are less likely to occur in the coil than in a coil in which the side of the side surfaces is flat.

公开(公告)号：US20220310299A1

公开(公告)日：2022-09-29

申请号：US17697212

申请日：2022-03-17

Applicant: TDK Corporation

Inventor： Akihiko OIDE ,  Makoto YOSHINO ,  Tomoki OKADA ,  Seiji OSADA ,  Yuuki OKAZAKI ,  Takeshi SASAKI ,  Mitsuru ITO ,  Kenta SASAKI ,  Kazuhiro EBINA ,  Takashi ABE ,  Hiroshi ONO

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

Abstract: In the multi-layer inductor, the internal electrode includes the auxiliary conductor, and the auxiliary conductor is jointed to the external electrode at the end face. Therefore, when a defect occurs in a part of the through conductors, a current flows through the remaining through conductor(s) and a current also flows through the auxiliary conductor. Therefore, overheating at the joint surface between the remaining through conductor(s) and the external electrode can be prevented, and cutting and/or fusion starting from the joint surface can be prevented.

公开(公告)号：US20210383960A1

公开(公告)日：2021-12-09

申请号：US17337985

申请日：2021-06-03

Applicant: TDK CORPORATION

Inventor： Daiki KATO ,  Masashi SHIMOYASU ,  Yoji TOZAWA ,  Seiichi NAKAGAWA ,  Akihiko OIDE ,  Makoto YOSHINO ,  Kazuhiro EBINA

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

Abstract: A multilayer conductor component includes an element body, an internal conductor, and an external electrode. The external electrode includes a sintered metal layer. The sintered metal layer is disposed on an end surface, a pair of side surfaces, a first main surface, and a second main surface of the element body. An electrode length, which is a length in the first direction from an edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions. The electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions.

公开(公告)号：US20210375527A1

公开(公告)日：2021-12-02

申请号：US17329348

申请日：2021-05-25

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Daiki KATO ,  Yoji TOZAWA ,  Takashi ENDO ,  Seiichi NAKAGAWA ,  Mitsuru ITO ,  Kenta SASAKI ,  Akihiko OIDE ,  Makoto YOSHINO ,  Kazuhiro EBINA

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

Abstract: A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.

公开(公告)号：US20200234873A1

公开(公告)日：2020-07-23

申请号：US16746178

申请日：2020-01-17

Applicant: TDK Corporation

Inventor： Hajime KATO ,  Hidekazu SATO ,  Makoto YOSHINO ,  Kazuya TOBITA ,  Yuto SHIGA ,  Youichi KAZUTA ,  Noriaki HAMACHI

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

Abstract: A multilayer coil component 1 includes an element body 2, a coil 8, and a terminal electrode 4 and a terminal electrode 5. Each of the terminal electrode 4 and the terminal electrode 5 is disposed over at least the end surfaces 2a and 2b and a main surface 2d. Each of the terminal electrode 4 and the terminal electrode 5 and at least a part of the coil 8 overlap when viewed from the facing direction of the pair of side surfaces 2e and 2f. Each of the terminal electrode 4 and the terminal electrode 5 and the coil 8 do not overlap when viewed from the facing direction of the pair of end surfaces 2a and 2b.

公开(公告)号：US20200066432A1

公开(公告)日：2020-02-27

申请号：US16540778

申请日：2019-08-14

Applicant: TDK CORPORATION

Inventor： Yuma ISHIKAWA ,  Makoto YOSHINO

IPC: H01F17/00 ,  H01F27/29 ,  H01F17/06 ,  H01F27/28

Abstract: A multilayer coil component includes an element body and a coil conductor. The element body has a non-magnetic portion and a pair of magnetic portions. One of the pair of magnetic portions includes a first magnetic region, a first non-magnetic region, a second magnetic region, and a second non-magnetic region. A sum of a first length of the non-magnetic portion in a lamination direction and a second length of the first non-magnetic region in the lamination direction is equal to or less than a third length of the first magnetic region in the lamination direction. A sum of the second length and a fourth length of the second non-magnetic region in the lamination direction is equal to or less than a fifth length of the second magnetic region in the lamination direction. The fourth length is equal to or greater than the second length.

公开(公告)号：US20190237239A1

公开(公告)日：2019-08-01

申请号：US16249132

申请日：2019-01-16

Applicant: TDK CORPORATION

Inventor： Hajime KATO ,  Satoru OKAMOTO ,  Masahiro KATO ,  Makoto YOSHINO ,  Kazuya TOBITA ,  Yuto SHIGA ,  Youichi KAZUTA ,  Noriaki HAMACHI

IPC: H01F27/28 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/29 ,  H01F2027/2809

Abstract: A laminated coil component 1 includes an element body 2, a coil 8 disposed in the element body 2, and a first external electrode 4 and a second external electrode 5, and at least a part of the coil 8 is disposed in a first region A1 and a second region A2 when seen in a facing direction of the pair of side surfaces 2e and 2f, and the coil 8 is not disposed in a third region A3 and a fourth region A4 when seen in the facing direction of the pair of side surfaces 2e and 2f.

公开(公告)号：US20190123705A1

公开(公告)日：2019-04-25

申请号：US16160489

申请日：2018-10-15

Applicant: TDK CORPORATION

Inventor： Akihiko OIDE ,  Yoji TOZAWA ,  Seiichi NAKAGAWA ,  Shinichi KONDO ,  Takashi ENDO ,  Makoto YOSHINO ,  Noriaki HAMACHI

IPC: H03H7/01 ,  H01G4/228 ,  H01G4/008 ,  H03H1/00 ,  H01G4/38 ,  H01G4/40 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F27/40

Abstract: An element body includes a first function portion including a first material, a second function portion including a second material different from the first material, and an intermediate portion placed between the first function portion and the second function portion. The intermediate portion includes a first component included in the first material, and a second component included in the second material. A side surface of the element body includes surfaces of the first function portion, the second function portion, and the intermediate portion. Each of terminal electrodes includes electrode portion formed on the side surface across the surfaces of the first function portion, the second function portion, and the intermediate portion. An insulating layer is formed on the side surface in such a manner as to be in contact with at least a region exposed from the electrode portions between the electrode portions in the surface of the intermediate portion.

公开(公告)号：US20190122800A1

公开(公告)日：2019-04-25

申请号：US16158779

申请日：2018-10-12

Applicant: TDK CORPORATION

Inventor： Yuya OSHIMA ,  Shinichi KONDO ,  Junichi OTSUKA ,  Yohei TADAKI ,  Kazuo IWAI ,  Masayuki SUZUKI ,  Shigeshi OSAWA ,  Kazuhiro EBINA ,  Makoto YOSHINO ,  Mamoru KAWAUCHI

IPC: H01F17/00 ,  H01F27/29 ,  H01F27/245 ,  H01F27/28 ,  H01F5/00 ,  H01F41/04

Abstract: First internal conductors are separated from each other in a first direction. Each of the first internal conductors includes a coil portion and a pad portion having a width larger than a width of the coil portion. The pad portions adjacent to each other in the first direction are connected to each other via a through-hole conductor and overlap each other when viewed from the first direction. When viewed from the first direction, each of the coil portions includes a first portion not overlapping the pad portion adjacent in the first direction and a second portion overlapping a part of the pad portion adjacent in the first direction. A second internal conductor is disposed on the same layer as the second portion and is positioned to overlap a portion of the pad portion adjacent in the first direction not overlapping the second portion when viewed from the first direction.