公开(公告)号：US20190280667A1

公开(公告)日：2019-09-12

申请号：US16334991

申请日：2017-08-21

Applicant: TDK CORPORATION

Inventor： Akihiko OIDE ,  Naoki UCHIDA ,  Yoji TOZAWA ,  Makoto YOSHINO ,  Seiichi NAKAGAWA ,  Shinichi SATO ,  Hiroshi ONO ,  Takashi ENDO

IPC: H03H7/01 ,  H03H1/00

Abstract: A multilayer LC filter array includes an element body of a rectangular parallelepiped shape, a first filter including a first inductor and a first capacitor that are disposed in the element body, a second filter including a second inductor and a second capacitor that are disposed in the element body, a first input terminal electrode and a first output terminal electrode that are connected to the first inductor, a second input terminal electrode and a second output terminal electrode that are connected to the second inductor, and a ground terminal electrode that is connected to the first capacitor and the second capacitor. The element body includes first and second principal surfaces opposing each other. The ground terminal electrode is disposed at a center of the first principal surface. The first input terminal electrode, the first output terminal electrode, the second input terminal electrode, and the second output terminal electrode are disposed at respective different corner portions of the element body when viewed from a direction orthogonal to the first principal surface.

公开(公告)号：US20180337001A1

公开(公告)日：2018-11-22

申请号：US15821998

申请日：2017-11-24

Applicant: TDK CORPORATION

Inventor： Yoji TOZAWA ,  Masashi SHIMOYASU ,  Makoto YOSHINO ,  Takuo ABE ,  Akihiko OIDE ,  Tsutomu ONO ,  Shinichi SATO ,  Makoto MORITA ,  Shinichi SATO ,  Hidekazu SATO ,  Masashi KITAZAKI ,  Naoki UCHIDA ,  Masahiro KATO

IPC: H01G4/232 ,  H01G4/252 ,  H01G13/00 ,  H05K1/03 ,  H01B1/22 ,  H01G4/30 ,  H01F17/00 ,  H03H7/42

CPC classification number: H01G4/2325 ,  H01B1/22 ,  H01F17/0013 ,  H01F2017/0093 ,  H01G4/12 ,  H01G4/252 ,  H01G4/30 ,  H01G13/006 ,  H03H7/427 ,  H03H2001/0085 ,  H05K1/0306

Abstract: An electronic component includes an element body, an external electrode, and a resin film having electrical insulation properties. The element body includes a principal surface and a side surface adjacent to the principal surface. The external electrode includes a first electrode portion disposed on the principal surface and a second electrode portion disposed on the side surface. The resin film is disposed on the principal surface and is in contact with the principal surface. Each of the first electrode portion and the second electrode portion includes a conductive resin layer disposed on the element body. A conductive resin layer included in the first electrode portion is disposed on the resin film and is in contact with the resin film.

公开(公告)号：US20240120142A1

公开(公告)日：2024-04-11

申请号：US18480760

申请日：2023-10-04

Applicant: TDK CORPORATION

Inventor： Yoji TOZAWA ,  Masashi SHIMOYASU ,  Akihiko OIDE ,  Daiki KATO ,  Makoto YOSHINO ,  Takashi ENDO ,  Takuya KODAMA ,  Akira AKASAKA ,  Ken ITOH

IPC: H01F27/02 ,  H01F27/29

CPC classification number: H01F27/022 ,  H01F27/29

Abstract: The electronic component includes an element body, an internal conductor, a cover layer, and a conductor layer. The internal conductor is disposed in the element body. The cover layer is disposed on an outer surface of the element body and has an electrical insulation property. The conductor layer is disposed on the cover layer and is electrically connected to the internal conductor. The conductor layer includes a portion. The portion protrudes toward the element body through the cover layer and is physically and electrically connected to the internal conductor. The conductor layer is electrically connected to the internal conductor.

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：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：US20170330673A1

公开(公告)日：2017-11-16

申请号：US15497314

申请日：2017-04-26

Applicant: TDK CORPORATION

Inventor： Shinichi SATO ,  Yohei TADAKI ,  Akihiko OIDE ,  Yuma ISHIKAWA ,  Hidekazu SATO

IPC: H01F27/245 ,  H01F41/04 ,  H01F27/32 ,  H01F27/29 ,  H01F27/28 ,  H01F41/12 ,  H01F27/255

CPC classification number: H01F27/245 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/022 ,  H01F27/255 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/292 ,  H01F27/323 ,  H01F41/043 ,  H01F41/122

Abstract: A multilayer coil component includes an element body made of a ferrite sintered body and a coil. The coil is configured with a plurality of internal conductors juxtaposed in the element body and electrically connected to one another. An average crystal grain size in a surface region of the element body is smaller than an average crystal grain size in a region between the internal conductors in the element body. A surface of the element body is covered with a layer made of an insulating material. The insulating material is not present among the crystal grains in the surface region of the element body.

公开(公告)号：US20170309389A1

公开(公告)日：2017-10-26

申请号：US15488876

申请日：2017-04-17

Applicant: TDK CORPORATION

Inventor： Shinichi SATO ,  Yohei TADAKI ,  Akihiko OIDE ,  Yuma ISHIKAWA ,  Hidekazu SATO ,  Kazuhiro EBINA ,  Hiroyuki TANOUE

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F41/04 ,  H01F41/12

Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.