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公开(公告)号：US20190027287A1
公开(公告)日：2019-01-24
申请号：US16033521
申请日：2018-07-12
Applicant: TDK CORPORATION
Inventor： Takashi KUDO , Makoto MORITA , Fuyuki MIURA
Abstract: A coil device includes a coil portion, an element body, and a terminal electrode. The coil portion is formed by a wire wound in a coil shape. The element body contains the coil portion where a part of an outer circumference of a lead-out part of the coil portion is exposed as an exposed portion from a bottom surface of the element body and where the rest of the outer circumference of the lead-out part of the coil portion is embedded as an embedded portion in the element body. The terminal electrode is formed on the bottom surface of the element body and connected with the exposed portion. An embedded length of the outer circumference of the lead-out part in the embedded portion is larger than a substantially half of a full length of the outer circumference of the lead-out part.
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公开(公告)号：US20210358683A1
公开(公告)日：2021-11-18
申请号：US17320402
申请日：2021-05-14
Applicant: TDK CORPORATION
Inventor： Kyosuke INUI , Makoto MORITA , Takashi KUDO , Toshiyuki ANBO , Kyohei TONOYAMA , Fuyuki MIURA , Masanori SUGAI , Eietsu ABE , Toru TONOGAI , Yuichi OYANAGI
Abstract: An electronic component according to the present invention includes: a leadout electrode portion provided on an outer surface of an element main body; and a resin electrode layer formed at a part of the outer surface of the element main body and connected to the leadout electrode portion. The leadout electrode portion contains copper as a main component, and the resin electrode layer includes a conductor powder containing silver, and a resin. Further, a diffusion layer containing copper oxide and silver is formed at an interface between the leadout electrode portion and the resin electrode layer.
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公开(公告)号：US20250157724A1
公开(公告)日：2025-05-15
申请号：US19022371
申请日：2025-01-15
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Takashi SUZUKI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Keito YASUDA , Ryuichi WADA , Makoto MORITA , Takashi KUDO , Kyohei TONOYAMA
Abstract: In a multilayer coil component, a part filled with a resin and a void part not filled with the resin exist between a plurality of metal magnetic particles in an element body, one main surface of the element body is a mounting surface with respect to an external electronic component, and the edge of an external electrode is positioned on the mounting surface. In the element body, a high void region where the porosity caused by the void part is higher than the porosity of the other part in the element body extends from the edge of the external electrode on the mounting surface toward an end surface of the element body.
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公开(公告)号：US20130249662A1
公开(公告)日：2013-09-26
申请号：US13847079
申请日：2013-03-19
Applicant: TDK CORPORATION
Inventor： Kyohei TONOYAMA , Makoto MORITA , Tomokazu ITO , Hitoshi OHKUBO , Manabu OHTA , Yoshihiro MAEDA , Yuuya KANAME , Hideharu MORO
IPC: H01F27/255
CPC classification number: H01F27/255 , H01F17/0013 , H01F27/292 , H01F2017/048
Abstract: In a planar coil element, the quantitative ratio of inclined particles to total particles of a first metal magnetic powder contained in a metal magnetic powder-containing resin provided in a through hole of a coil unit is higher than the quantitative ratio of inclined particles to total particles of the first metal magnetic powder contained in the metal magnetic powder-containing resin provided in other than the through hole, and many of particles of the first metal magnetic powder in the magnetic core are inclined particles whose major axes are inclined with respect to the thickness direction and the planar direction of a substrate. Therefore, the planar coil element has improved strength as compared to a planar coil element shown in FIG. 9A and has improved magnetic permeability as compared to a planar coil element shown in FIG. 9B.
Abstract translation: 在平面线圈元件中，设置在线圈单元的通孔中的含金属磁性粉末的树脂中包含的第一金属磁粉的倾斜粒子与总粒子的定量比高于倾斜粒子与总体的定量比 除了通孔以外的金属磁性粉末的树脂中含有的第一金属磁性粉末的颗粒，磁芯中的第一金属磁性粉末的许多颗粒是倾斜的，其长轴相对于 厚度方向和基板的平面方向。 因此，与图1所示的平面线圈元件相比，平面线圈元件具有改善的强度。 与图9A所示的平面线圈元件相比，磁导率提高。 9B。
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Patent Agency Ranking
公开(公告)号：US20220068565A1
公开(公告)日：2022-03-03
申请号：US17521500
申请日：2021-11-08
Applicant: TDK CORPORATION
Inventor： Yoji TOZAWA , Masashi SHIMOYASU , Makoto YOSHINO , Takuo ABE , Akihiko OIDE , Tsutomu ONO , Shinichi SATO , Makoto MORITA , Shinichi SATO , Hidekazu SATO
IPC: H01G4/232 , H01G4/252 , H01G13/00 , H05K1/03 , H01B1/22 , H01G4/30 , H03H7/42 , H01F17/00 , H01F27/29 , H01F27/32
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.
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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
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.
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公开(公告)号：US20220108836A1
公开(公告)日：2022-04-07
申请号：US17490893
申请日：2021-09-30
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Takashi SUZUKI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Keito YASUDA , Ryuichi WADA , Makoto MORITA , Takashi KUDO , Kyohei TONOYAMA
Abstract: In a multilayer coil component, a part filled with a resin and a void part not filled with the resin exist between a plurality of metal magnetic particles in an element body, one main surface of the element body is a mounting surface with respect to an external electronic component, and the edge of an external electrode is positioned on the mounting surface. In the element body, a high void region where the porosity caused by the void part is higher than the porosity of the other part in the element body extends from the edge of the external electrode on the mounting surface toward an end surface of the element body.
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公开(公告)号：US20180226184A1
公开(公告)日：2018-08-09
申请号：US15886485
申请日：2018-02-01
Applicant: TDK CORPORATION
Inventor： Takashi KUDO , Makoto MORITA , Fuyuki MIURA , Naoki SATOU , Kyohei TONOYAMA , Yasunori CHIBA , Masanori SUGAI , Junichi AOYADO
CPC classification number: H01F27/28 , H01F17/0033 , H01F17/04 , H01F27/24 , H01F41/04 , H01F2017/048
Abstract: A coil device includes a conductor and a terminal electrode. The conductor is embedded in a core body and wound in a coil shape. The terminal electrode is formed on an end surface of the core body and connected with a lead end of the conductor. The coil device further includes a dummy conductor embedded in the core body separately from the conductor. An end part of the dummy conductor exposed from the end surface of the core body separately from the lead end is connected with the terminal electrode.
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公开(公告)号：US20130249664A1
公开(公告)日：2013-09-26
申请号：US13848441
申请日：2013-03-21
Applicant: TDK CORPORATION
Inventor： Kyohei TONOYAMA , Makoto MORITA , Tomokazu ITO , Hitoshi OHKUBO , Manabu OHTA , Yoshihiro MAEDA , Yuuya KANAME , Hideharu MORO
IPC: H01F41/04 , H01F27/255
CPC classification number: H01F41/04 , H01F17/0013 , H01F27/255 , H01F27/292 , H01F41/046 , H01F2017/046
Abstract: In a planar coil element and a method for producing the same, a metal magnetic powder-containing resin containing an oblate or needle-like first metal magnetic powder contains a second metal magnetic powder having an average particle size (1 μm) smaller than that (32 μm) of the first metal magnetic powder, which significantly reduces the viscosity of the metal magnetic powder-containing resin. Therefore, the metal magnetic powder-containing resin is easy to handle when applied to enclose a coil unit, which makes it easy to produce the planar coil element.
Abstract translation: 在平面线圈元件及其制造方法中，含有扁平或针状的第一金属磁性粉末的含金属磁性粉末的树脂含有平均粒径（1μm）小于（ 32微米）的第一金属磁性粉末，这显着降低了含金属磁性粉末的树脂的粘度。 因此，当用于包围线圈单元时，含金属磁性粉末的树脂易于处理，这使得容易制造平面线圈元件。
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