公开(公告)号：US11710593B2

公开(公告)日：2023-07-25

申请号：US16817046

申请日：2020-03-12

Applicant: TDK CORPORATION

Inventor： Shinichi Sato ,  Takahiro Sato ,  Yusuke Nagai ,  Mitsuharu Koike ,  Kazuhiro Miura ,  Seiichi Nakagawa ,  Shinichi Kondo ,  Takashi Suzuki

IPC: H01F27/28 ,  H01F17/00 ,  H01F1/24

CPC classification number: H01F17/0013 ,  H01F1/24 ,  H01F2017/0066

Abstract: A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.

公开(公告)号：US11139112B2

公开(公告)日：2021-10-05

申请号：US15892784

申请日：2018-02-09

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Yasushi Matsuyama ,  Yuto Shiga ,  Shunji Aoki ,  Shinichi Kondo

IPC: H01F27/30 ,  H01F41/04 ,  H01F27/32 ,  H01F27/28 ,  H01F27/29 ,  H01F17/00

Abstract: An electronic component includes an element provided with a first recess, and a mounting conductor including a first conductor portion disposed in the first recess. The first conductor portion has a first face opposed to a bottom face of the first recess, a second face opposed to the first face, and a third face connecting the first face and the second face. The third face has a region overlapping with the second face as viewed from an opposing direction of the bottom face of the first recess and the first face.

公开(公告)号：US10388448B2

公开(公告)日：2019-08-20

申请号：US15617401

申请日：2017-06-08

Applicant: TDK CORPORATION

Inventor： Yuusuke Nagai ,  Takashi Suzuki ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Yuya Ishima ,  Shinichi Sato ,  Masaki Takahashi ,  Takashi Endo

IPC: H01F5/00 ,  H01F27/255 ,  H01F17/00

Abstract: A multilayer coil component includes an element body including soft magnetic metal powders and a coil disposed in the element body. The coil includes a plurality of internal conductors electrically connected to each other. The plurality of internal conductors are separated from each other in a first direction and are adjacent to each other in the first direction. An average particle diameter of the soft magnetic metal powders located at an inner side of the coil when viewing from the first direction is larger than an average particle diameter of the soft magnetic metal powders located between the internal conductors adjacent to each other in the first direction.

公开(公告)号：US09573837B2

公开(公告)日：2017-02-21

申请号：US15015420

申请日：2016-02-04

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Masaki Takahashi ,  Hidekazu Sato ,  Yukari Akita ,  Kazuya Tobita ,  Shinichi Kondo

IPC: C03C8/22 ,  C03C8/14 ,  H01F27/28 ,  C03C3/089 ,  H01F17/00 ,  H01F27/29 ,  C03C3/091 ,  C03C3/093 ,  C03C14/00 ,  C04B35/00 ,  C03B19/06

CPC classification number: C03C3/089 ,  C03B19/06 ,  C03C3/091 ,  C03C3/093 ,  C03C8/22 ,  C03C14/004 ,  C04B35/00 ,  H01F17/0013 ,  H01F27/292

Abstract: A glass ceramic composition of the present invention includes a main component composed of a first glass, a second glass, Al2O3, and SiO2. The first glass is SiO2—K2O—B2O3 based glass. The second glass is MO—SiO2—Al2O3—B2O3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO2—Al2O3—ZnO—ZrO2—B2O3 based glass. In case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al2O3 of 7 to 18 wt %.

Abstract translation: 本发明的玻璃陶瓷组合物包括由第一玻璃，第二玻璃，Al 2 O 3和SiO 2构成的主要成分。 第一块玻璃是SiO2-K2O-B2O3基玻璃。 第二玻璃是MO-SiO2-Al2O3-B2O3基玻璃（“M”是碱土金属）和/或CaO-SiO2-Al2O3-ZnO-ZrO2-B2O3基玻璃。 在主成分的总量为100重量％的情况下，主成分含有12〜30重量％的第二玻璃，第一玻璃和第二玻璃的总量为40〜56重量％，进一步为7〜18的Al 2 O 3 重量％。

公开(公告)号：US11955275B2

公开(公告)日：2024-04-09

申请号：US17004334

申请日：2020-08-27

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Shinichi Kondo ,  Kosuke Ito ,  Shingo Hattori ,  Takashi Suzuki ,  Hidenobu Umeda

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

CPC classification number: H01F41/041 ,  H01F27/2804 ,  H01F41/04 ,  H01F41/12 ,  H01F2027/2809

Abstract: A method for producing a multilayer coil component includes forming, on a main face of a substrate, a first coil conductor extending along the main face having conductivity, forming a second coil conductor and a third coil conductor apart from each other in a direction in which the first coil conductor extends and each extending from the first coil conductor in a first direction orthogonal to the main face, and forming a fourth coil conductor electrically connected to an end of the second coil conductor opposite to the first coil conductor and extending along the main face. The forming the first coil conductor includes forming, on the main face, a first insulator layer provided with a first penetration portion having a shape corresponding to the first coil conductor and exposing a part of the main face, and forming, by plating, the first coil conductor in the first penetration portion.

公开(公告)号：US11302466B2

公开(公告)日：2022-04-12

申请号：US16199047

申请日：2018-11-23

Applicant: TDK CORPORATION

Inventor： Takashi Suzuki ,  Hidekazu Sato ,  Yusuke Nagai ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Yuya Ishima ,  Shinichi Sato ,  Masaki Takahashi ,  Takashi Endo

IPC: H01F1/147 ,  H01F1/33 ,  H01F27/28 ,  H01F17/04 ,  H01F17/00 ,  H01F1/24 ,  H01F1/26 ,  H01F27/29 ,  H01F27/255

Abstract: A multilayer coil electronic component having improved inductance L, Q, and strength, and which has an element in which a coil conductor and a magnetic element body are stacked. The magnetic element body includes soft magnetic metal particles and a resin. The resin fills a space between the soft magnetic metal particles. Each of soft magnetic metal particles has a soft magnetic metal particle core and an oxide film covering the soft magnetic metal particle core. A layer of the oxide film contacting the soft magnetic metal particle core is made of an oxide including Si.

公开(公告)号：US11127529B2

公开(公告)日：2021-09-21

申请号：US16843228

申请日：2020-04-08

Applicant: TDK CORPORATION

Inventor： Yuya Oshima ,  Makoto Yoshino ,  Yoji Tozawa ,  Junichi Otsuka ,  Kazuo Iwai ,  Yohei Tadaki ,  Shinichi Kondo ,  Kazuhiro Ebina ,  Mamoru Kawauchi

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

Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.

公开(公告)号：US10818422B2

公开(公告)日：2020-10-27

申请号：US15895567

申请日：2018-02-13

Applicant: TDK CORPORATION

Inventor： Yuusuke Nagai ,  Takashi Suzuki ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Yuya Ishima ,  Shinichi Sato ,  Masaki Takahashi ,  Takashi Endo

IPC: H01F27/30 ,  H01F17/00 ,  H01F27/29

Abstract: In a multilayer coil component, an end of a lower coil layer and an end of a connecting part are directly overlapped, and the end of the lower coil layer includes a contact edge positioned on a side of the connecting part and being in contact with the connecting part and a non-contact edge positioned on a side opposite to the connecting part and not being in contact with the connecting part. Then, the contact edge and the non-contact edge are not overlapped when viewed from a laminated direction. Consequently, a propagation distance of a crack becomes longer as compared with the case where an end face is parallel to the laminated direction, effectively suppressing advance of the crack. Suppressed advance of a crack in this manner makes the multilayer coil component provide a high component strength as a whole.

公开(公告)号：US10607756B2

公开(公告)日：2020-03-31

申请号：US15618493

申请日：2017-06-09

Applicant: TDK CORPORATION

Inventor： Takashi Suzuki ,  Hidekazu Sato ,  Yuusuke Nagai ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Yuya Ishima ,  Shinichi Sato ,  Masaki Takahashi ,  Takashi Endo

IPC: H01F1/147 ,  H01F17/00 ,  H01F17/04 ,  H01F27/255 ,  H01F27/28

Abstract: A soft magnetic metal powder includes a plurality of soft magnetic metal grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %. A soft magnetic metal fired body includes soft magnetic metal fired grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %.

公开(公告)号：US09905365B2

公开(公告)日：2018-02-27

申请号：US15215237

申请日：2016-07-20

Applicant: TDK CORPORATION

Inventor： Kouichi Kakuda ,  Takashi Suzuki ,  Masaki Takahashi ,  Yukio Takahashi ,  Shinichi Kondo ,  Asuka Murai ,  Akihiko Oide ,  Naoki Uchida ,  Hidekazu Sato

IPC: H01G4/40 ,  H01F1/03 ,  C04B35/47 ,  C04B35/462 ,  C04B35/453 ,  B32B18/00 ,  C04B35/26 ,  H01F1/34 ,  H01F17/00 ,  H01F27/255

CPC classification number: H01G4/40 ,  B32B18/00 ,  C04B35/265 ,  C04B35/453 ,  C04B35/462 ,  C04B35/47 ,  C04B2235/3232 ,  C04B2235/3236 ,  C04B2235/3262 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3409 ,  C04B2235/365 ,  C04B2235/6025 ,  C04B2237/34 ,  C04B2237/346 ,  H01F1/0306 ,  H01F1/0315 ,  H01F1/344 ,  H01F17/0013 ,  H01F27/255 ,  H01F2017/0026

Abstract: Composite electronic including coil, capacitor and intermediate parts, wherein coil part includes coil-conductor and magnetic-layer, capacitor part includes internal electrodes and dielectric-layer, which contains SrO—TiO2 or ZnO—TiO2 based oxide, intermediate part between coil and capacitor parts, intermediate part includes intermediate material layer, which contains ZnO, TiO2 and boron, ZnO contained in intermediate material layer 50-85 parts by mole and TiO2 contained the intermediate material layer 15-50 parts by mole when total content of ZnO and TiO2 in intermediate material layer is 100 parts by mole, content boron in intermediate material layer is 0.1-5.0 parts by weight of B2O3 when total of ZnO and TiO2 in intermediate material layer set to 100 parts by weight, part of ZnO and TiO2 intermediate material layer constitute ZnO—TiO2 compound, which in intermediate material layer is 50 wt % or more when total weight of ZnO and TiO2 in intermediate material layer is set to 100 wt %.