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公开(公告)号：US20230123939A1
公开(公告)日：2023-04-20
申请号：US17964457
申请日：2022-10-12
Applicant: TDK CORPORATION
Inventor： Shota OTSUKA , Takashi KUDO , Kyohei TONOYAMA , Taiji MATSUI
Abstract: In a coil component includes an insulating layer interposed between an external terminal and an element body and formed in an entire region excluding a connection region in a formation region in which the external terminal is formed, even when a high transient voltage is applied between the pair of external terminals, insulation breakdown does not occur or hardly occurs because of the insulating layer.
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公开(公告)号：US20220375675A1
公开(公告)日：2022-11-24
申请号：US17740693
申请日：2022-05-10
Applicant: TDK CORPORATION
Inventor： Kentaro SAITO , Shota OTSUKA , Kyohei TONOYAMA , Tomonaga NISHIKAWA , Mitsuo NATORI , Yuuichi KAWAGUCHI , Junichi SHIMAMURA
IPC: H01F27/255 , H01F27/29
Abstract: A coil-embedded magnetic core capable of achieving improvements both in insulation and initial magnetic permeability, and coil devices thereof. The coil-embedded magnetic core embedding a coil made of a conductor, including magnetic powder and a resin, in which the coil-embedded magnetic core further includes a modifier.
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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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公开(公告)号：US20220037068A1
公开(公告)日：2022-02-03
申请号：US17502323
申请日：2021-10-15
Applicant: TDK CORPORATION
Inventor： Kyohei TONOYAMA , Ken SATOH , Kentaro SAITO , Miyuki ASAI , Hitoshi OHKUBO
Abstract: A magnetic core includes a metal magnetic powder, which has a large size powder, an intermediate size powder, and a small size powder. A particle size of the large size powder is 10 μm or more and 60 μm or less. A particle size of the intermediate size powder is 2.0 μm or more and less than 10 μm. A particle size of the small size powder is 0.1 μm or more and less than 2.0 μm. The large size powder, the intermediate size powder, and the small size powder have an insulation coating. When A1 represents an average insulation coating thickness of the large size powder, A2 represents an average insulation coating thickness of the intermediate size powder, A3 represents an average insulation coating thickness of the small size powder, A3 is 30 nm or more and 100 nm or less, A3/A1≥1.3, and A3/A2≥1.0.
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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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Patent Agency Ranking
公开(公告)号：US20230119388A1
公开(公告)日：2023-04-20
申请号：US17964129
申请日：2022-10-12
Applicant: TDK CORPORATION
Inventor： Shota OTSUKA , Takashi KUDO , Kyohei TONOYAMA , Taiji MATSUI , Ken SATOH , Miyuki ASAI
Abstract: In the coil component, the external terminal and the metal magnetic powder-containing resin constituting the element body are not in direct contact with each other, and thus high ESD resistance is obtained. That is, even when a high transient voltage is applied between the pair of external terminals, insulation breakdown is less likely to occur, and an improvement in breakdown voltage with respect to the transient voltage can be realized.
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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：US20210319944A1
公开(公告)日：2021-10-14
申请号：US17230332
申请日：2021-04-14
Applicant: TDK CORPORATION
Inventor： Satoshi SUGIMOTO , Kyohei TONOYAMA , Miyuki ASAI , Takamasa IWASAKI
IPC: H01F27/255 , H01F27/28 , H01F27/32 , H01F41/02
Abstract: To provide a coil device capable of preventing a short circuit between turns of the coil part. A coil device 2 includes a core part 4 including a magnetic powder 41 and a resin 42, and a coil part 6 embedded in the core part 4 and having a wound wire 6a with an insulation coating layer 61.
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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：US20170154720A1
公开(公告)日：2017-06-01
申请号：US15363938
申请日：2016-11-29
Applicant: TDK Corporation
Inventor： Hitoshi OHKUBO , Kyohei TONOYAMA , Shigeki SATO
CPC classification number: H01F27/255 , H01F17/0013 , H01F17/04 , H01F27/022 , H01F27/2804 , H01F27/292 , H01F27/324 , H01F27/42 , H01F2017/048 , H01F2027/2809
Abstract: A coil device comprising a coil, and a magnetic metal powder containing resin covering said coil. Said magnetic metal powder comprises at least two types of magnetic metal powders with different D50. The magnetic metal powder having larger D50 is defined as a large diameter powder, and the magnetic metal powder having smaller D50 is defined as a small diameter powder among the two types of said magnetic metal powder. Said large diameter powder is made of iron or iron based alloy. Said small diameter powder is made of Ni—Fe alloy. Said small diameter powder has D50 of 0.5 to 1.5 μm. Said large diameter powder and said small diameter powder respectively comprises an insulation coating layer.
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