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：US11373789B2

公开(公告)日：2022-06-28

申请号：US16234921

申请日：2018-12-28

Applicant: TDK CORPORATION

Inventor： Takeshi Shibayama ,  Yukio Takahashi ,  Takashi Suzuki ,  Hiroyuki Tanoue ,  Masashi Shimoyasu ,  Masahiro Kato

IPC: H01F1/36 ,  H01F17/04 ,  C04B35/626 ,  H01F17/00 ,  H01F1/34 ,  C04B35/26 ,  H01F27/28 ,  H01F27/40 ,  H01F41/04

Abstract: A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of Fe2O3, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of B2O3 with respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 μm.

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：US11282622B2

公开(公告)日：2022-03-22

申请号：US16727553

申请日：2019-12-26

Applicant: TDK CORPORATION

Inventor： Takeshi Shibayama ,  Takashi Suzuki ,  Takahiro Sato ,  Kenji Komorita ,  Tatsuro Suzuki ,  Yukio Takahashi ,  Hiroyuki Tanoue ,  Yasuhiro Ito

IPC: B32B9/00 ,  H01F1/34 ,  C04B35/26

Abstract: A ferrite composition includes a main component and a sub-component. The main component includes 10.0 to 38.0 mol % of a Fe compound in terms of Fe2O3, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound. The sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO2, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of Co3O4, and 0.1 to 3.0 parts by weight of a Bi compound in terms of Bi2O3 with respect to 100 parts by weight of the main component.

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：US10074476B2

公开(公告)日：2018-09-11

申请号：US15090196

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki Choto ,  Takeshi Shibayama ,  Ryuichi Wada ,  Kouichi Kakuda ,  Yukari Akita ,  Asuka Murai ,  Yukio Takahashi ,  Takashi Suzuki ,  Akinori Ohi

IPC: C04B35/30 ,  H01F41/02 ,  C04B35/26 ,  H01F1/34 ,  H01F27/28

CPC classification number: H01F41/0246 ,  C04B35/26 ,  C04B35/2666 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/62695 ,  C04B2235/3244 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  C04B2235/94 ,  H01F1/344 ,  H01F27/2804 ,  H01F2027/2809

Abstract: A ferrite composition composed of a main component including 26 to 46 mol % of an iron oxide in terms of Fe2O3, 4 to 14 mol % of a copper oxide in terms of CuO, 0 to 26 mol % of a zinc oxide in terms of ZnO, and a residue of 40.0 mol % or more of a nickel oxide in terms of NiO. The ferrite composition, with respect to 100 parts by weight of the main component, is also composed of a subcomponent including 0.8 to 10.0 parts by weight of a silicon compound in terms of SiO2, 1.0 to 15.0 parts by weight of a cobalt compound in terms of Co3O4, and 0.7 to 30.0 parts by weight of a bismuth compound in terms of Bi2O3. A value of the cobalt compound content in terms of Co3O4 divided by the silicon compound content in terms of SiO2 is 0.4 to 5.5.

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 %.

公开(公告)号：US09159467B2

公开(公告)日：2015-10-13

申请号：US14166479

申请日：2014-01-28

Applicant: TDK Corporation

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: C03C8/22 ,  C03C8/14 ,  H01B3/12 ,  C03C14/00

CPC classification number: H01B3/12 ,  C03C8/22 ,  C03C14/00 ,  C03C2214/20

Abstract: In order to provide a dielectric ceramic composition capable of sintering at a low temperature, implementing a low relative dielectric constant, providing other excellent properties (such as a relative density and an insulation resistance), performing co-firing of different materials, and suppressing dispersion of Ag in the sintered body when the internal electrode is formed, the dielectric ceramic composition includes a main ingredient containing SiO2—K2O—B2O3-based glass of 40 to 65 weight %, quartz of 35 to 50 weight %, and amorphous silica of remaining weight %; and a subsidiary ingredient containing alumina of 1.5 to 4 weight %, K2O-MO—SiO2—B2O3-based glass (where “MO” denotes at least any one selected from a group consisting of CaO and SrO) of 5 to 20 weight % relative to the main ingredient of 100 weight %.

Abstract translation: 为了提供能够在低温下烧结的介电陶瓷组合物，实现低相对介电常数，提供其它优异的性能（例如相对密度和绝缘电阻），进行不同材料的共烧，抑制分散 在内部电极形成时，烧结体中的Ag的电介质陶瓷组合物包含含有40〜65重量％的SiO 2 -K 2 O-B 2 O 3类玻璃，35〜50重量％的石英，剩余的无定形二氧化硅 重量％ 和含有1.5〜4重量％氧化铝，K2O-MO-SiO2-B2O3系玻璃（其中“MO”表示选自CaO和SrO中的至少任意一种）的辅助成分相对于5重量％至20重量％ 主要成分为100重量％。

公开(公告)号：US20140220364A1

公开(公告)日：2014-08-07

申请号：US14166479

申请日：2014-01-28

Applicant: TDK Corporation

Inventor： Shusaku UMEMOTO ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: C04B35/14 ,  H01B3/12

CPC classification number: H01B3/12 ,  C03C8/22 ,  C03C14/00 ,  C03C2214/20

Abstract: In order to provide a dielectric ceramic composition capable of sintering at a low temperature, implementing a low relative dielectric constant, providing other excellent properties (such as a relative density and an insulation resistance), performing co-firing of different materials, and suppressing dispersion of Ag in the sintered body when the internal electrode is formed, the dielectric ceramic composition includes a main ingredient containing SiO2—K2O—B2O3-based glass of 40 to 65 weight %, quartz of 35 to 50 weight %, and amorphous silica of remaining weight %; and a subsidiary ingredient containing alumina of 1.5 to 4 weight %, K2O-MO—SiO2—B2O3-based glass (where “MO” denotes at least any one selected from a group consisting of CaO and SrO) of 5 to 20 weight % relative to the main ingredient of 100 weight %.

Abstract translation: 为了提供能够在低温下烧结的介电陶瓷组合物，实现低相对介电常数，提供其它优异的性能（例如相对密度和绝缘电阻），进行不同材料的共烧，抑制分散 在内部电极形成时，烧结体中的Ag的电介质陶瓷组合物包含含有40〜65重量％的SiO 2 -K 2 O-B 2 O 3类玻璃，35〜50重量％的石英，剩余的无定形二氧化硅 重量％ 和含有1.5〜4重量％氧化铝，K2O-MO-SiO2-B2O3系玻璃（其中“MO”表示选自CaO和SrO中的至少任意一种）的辅助成分相对于5重量％至20重量％ 主要成分为100重量％。