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公开(公告)号：US20220189679A1
公开(公告)日：2022-06-16
申请号：US17545607
申请日：2021-12-08
Applicant: TDK CORPORATION
Inventor： Ryo FUKUOKA , Hironori KIMATA , Masataro SAITO , Masazumi ARATA , Hitoshi OHKUBO
Abstract: In the coil component, the maximum reference surface height of the entire wall of the outermost wall and the innermost wall is the same as the reference surface height of the winding part of the coil, that is, equal to or less than the reference surface height of the winding part of the coil. In addition, in both the outermost wall and the innermost wall, the reference surface height of the second side surface is lower than the reference surface height of the winding part of the coil. In this case, in the vicinity of the upper surface of the outermost wall and the innermost wall, the magnetic flux toward the main surface side of the substrate is suppressed from being blocked by the outermost wall and the innermost wall, and the magnetic flux circulation is improved. Thus, the coil characteristics of the coil component are improved.
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公开(公告)号：US20210225588A1
公开(公告)日：2021-07-22
申请号：US17224508
申请日：2021-04-07
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Masazumi ARATA , Manabu OHTA , Shou KAWADAHARA , Yoshihiro MAEDA , Takahiro KAWAHARA , Hokuto EDA , Shigeki SATO
Abstract: In a coil component and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.
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公开(公告)号：US20210151248A1
公开(公告)日：2021-05-20
申请号：US17094433
申请日：2020-11-10
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Kenei ONUMA , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI
Abstract: In a coil component, a main body portion is made of a metal magnetic powder-containing resin, and thus a resin component appears on end surfaces of the main body portion. In addition, since external terminal electrodes are made of a conductive resin, a resin component also appears on the surfaces of the external terminal electrodes. Accordingly, insulating coating layers are integrally covered with high adhesion with the end surfaces of the main body portion and the external terminal electrodes by the insulating coating layers coming into contact with the end surfaces of the main body portion so as to straddle the external terminal electrodes.
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公开(公告)号：US20200373050A1
公开(公告)日：2020-11-26
申请号：US16877944
申请日：2020-05-19
Applicant: TDK CORPORATION
Inventor： Miyuki ASAI , Hokuto EDA , Masazumi ARATA , Hitoshi OHKUBO
Abstract: In a coil component, an insulation layer covers an upper surface of a conductor pattern. Accordingly, insulating properties between the conductor pattern and a magnetic body are enhanced, and insulating properties between the conductor patterns are enhanced. In addition, in the coil component, the magnetic body enters a space between resin walls such that the insulation layer is covered. Therefore, a volume of the magnetic body above the conductor pattern is increased, and high coil characteristics are realized.
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公开(公告)号：US20200279674A1
公开(公告)日：2020-09-03
申请号：US16799902
申请日：2020-02-25
Applicant: TDK CORPORATION
Inventor： Kazuhiro YOSHIDOME , Hiroyuki MATSUMOTO , Hitoshi OHKUBO , Atsuyuki NAKANO
Abstract: A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. The volume occupation of a magnetic material in the laminated body is 50% or more and 99.5% or less. A structure consisting of Fe-based nanocrystals is observed in the soft magnetic layers.
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Patent Agency Ranking
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：US20240331930A1
公开(公告)日：2024-10-03
申请号：US18616800
申请日：2024-03-26
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Kohei TAKAHASHI , Takamasa IWASAKI
CPC classification number: H01F27/292 , H01F27/2804 , H01F27/323 , H01F2027/2809
Abstract: A coil component, which is a kind of electronic component, is designed such that the resistivity of second electrode layers of external terminal electrodes are lower than the resistivity of first electrode layers. Therefore, the electric resistance when the voltage is applied between the external terminal electrodes and the current flows through the portion covering end surfaces is reduced as a whole of the external terminal electrode as compared with the electric resistance of an external terminal electrode constituted only by the first electrode layer.
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公开(公告)号：US20240331926A1
公开(公告)日：2024-10-03
申请号：US18618214
申请日：2024-03-27
Applicant: TDK Corporation
Inventor： Manabu OHTA , Ryo FUKUOKA , Yuji MATSUURA , Hokuto EDA , Takahiro NEMOTO , Kenei ONUMA , Masazumi ARATA , Hitoshi OHKUBO
Abstract: In the coil component, the lower end portion of the bump electrode protruding from the lower surface of the element body includes a flange portion, and the lower surface of the lower end portion is concave-convex. Therefore, compared to the case where the bump electrode is exposed in the form of a flat surface so as to be flat with the lower surface of the element body, the contact areas between the bump electrodes and the terminal electrodes are increased, and high connection reliability between the bump electrodes and the terminal electrodes is realized.
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公开(公告)号：US20230072929A1
公开(公告)日：2023-03-09
申请号：US17898736
申请日：2022-08-30
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
Abstract: In the coil component, external stress applied when the upper coil structure, the lower coil structure, and the magnetic sheet are stacked is dispersed by the undulation of both main surfaces of the magnetic sheet. By dispersing the stress in this manner, a situation in which defects such as cracks occur in the coil structure is effectively suppressed.
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公开(公告)号：US20220392698A1
公开(公告)日：2022-12-08
申请号：US17829513
申请日：2022-06-01
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
IPC: H01F27/32 , H01F27/29 , H01F27/255
Abstract: A coil component improving insulation between external terminals provided on the same surface of an element body is provided. In the coil component, when a voltage is applied via the external terminal electrode, for example, a potential difference may occur between the outer end portions. In the coil component, since the insulation between the outer end portions is enhanced by the upper insulator exposed on the end face of the element body, even when a potential difference occurs between the outer end portions, a situation in which the outer end portions are short-circuited on the end face is prevented.
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