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公开(公告)号：US20200373077A1
公开(公告)日：2020-11-26
申请号：US16877831
申请日：2020-05-19
Applicant: TDK CORPORATION
Inventor： Kenei ONUMA , Masazumi ARATA , Hitoshi OHKUBO
Abstract: An upper end portion and a lower end portion of a second magnetic portion of a coil component are further away from a coil than when a third part and a fifth part are not present. For this reason, a magnetic flux is unlikely to be concentrated in the upper end portion and the lower end portion of the second magnetic portion, so that magnetic saturation is unlikely to occur. Therefore, improvement of direct current superimposition characteristics is realized in the coil component.
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公开(公告)号：US20200279675A1
公开(公告)日：2020-09-03
申请号：US16800299
申请日：2020-02-25
Applicant: TDK CORPORATION
Inventor： Kazuhiro YOSHIDOME , Hiroyuki MATSUMOTO , Hitoshi OHKUBO , Atsuyuki NAKANO
IPC: H01F1/147 , H01F27/245 , C22C38/12 , C22C38/02 , C22C38/00
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. Micro gaps are formed in the soft magnetic layers. The soft magnetic layers are divided into at least two or more small pieces by the micro gaps. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.
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公开(公告)号：US20190013148A1
公开(公告)日：2019-01-10
申请号：US16027639
申请日：2018-07-05
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Masazumi ARATA , Takahiro KAWAHARA , Hokuto EDA , Hiroki TSUJIAI
Abstract: In a planar coil element, since an overlapping portion of a fourth resin wall of a first conductor pattern protrudes from an end surface of a main body portion, restriction on a width of the overlapping portion is relaxed, and the wide overlapping portion is realized. Therefore, an improvement in a withstand voltage between the second external terminal electrode formed on the end surface and an outermost turn of the first conductor pattern is realized. Similarly, regarding the second conductor pattern, the improvement in the withstand voltage between the first external terminal electrode formed on the end surface and an outermost turn of the second conductor pattern is realized.
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公开(公告)号：US20190013145A1
公开(公告)日：2019-01-10
申请号：US16027742
申请日：2018-07-05
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Masazumi ARATA , Takahiro KAWAHARA , Hokuto EDA , Hiroki TSUJIAI
Abstract: In a planar coil element, a dead space in a non-overlapping region is reduced by designing a total width of a first resin wall and a first turn located in the non-overlapping region to be narrow, more specifically, by designing the total width to be narrower than a total width of a second turn outside the first turn and a second resin wall located inside the turn and also than a total width of a third turn on the outer side and a third resin wall located inside the turn. As a result, a volume of a magnetic element body in a magnetic core portion of a coil can be increased, and an, inductance value, which is a magnetic characteristic, can also be improved.
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公开(公告)号：US20140009254A1
公开(公告)日：2014-01-09
申请号：US13935442
申请日：2013-07-03
Applicant: TDK Corporation
Inventor： Hitoshi OHKUBO , Tomokazu ITO , Hideto ITOH , Yoshihiro MAEDA , Manabu OHTA , Yuuya KANAME , Takahiro KAWAHARA , Takashi NAKAGAWA
IPC: H01F27/28
CPC classification number: H01F27/2804 , H01F17/0033 , H01F27/022 , H01F27/255 , H01F27/29 , H01F27/292 , H01F2017/0073 , H01F2027/2809
Abstract: A coil component 1 includes a substrate 2, a planar spiral conductor 10a formed on a top surface 2t of the substrate 2, a lead conductor 11a connected to an outer peripheral end of the planar spiral conductor 10a, a dummy lead conductor 15a formed on the top surface of the substrate 2 and between an outermost turn of the planar spiral conductor 10a and an end 2X2 of the substrate 2 and free from an electrical connection with another conductor within the same plane, external electrodes 26a and 26b arranged in parallel with the top surface of the substrate 2, and a bump electrode 25a formed on a surface of the lead conductor 11a and connects the lead conductor 11a with the external electrode 26a. The external terminals 26a and 26b have a larger area than the bump electrodes 15a and 15b for securing a bonding strength.
Abstract translation: 线圈部件1包括基板2，形成在基板2的顶面2t上的平面状螺旋导体10a，与平面螺旋导体10a的外周端连接的引出导体11a， 基板2的上表面和平面螺旋导体10a的最外侧的一侧和基板2的端部2X2之间，并且与同一平面内的另一个导体没有电连接，与顶部平行布置的外部电极26a和26b 基板2的表面以及形成在引线导体11a的表面上的突起电极25a，并将引线导体11a与外部电极26a连接起来。 外部端子26a和26b具有比用于确保接合强度的凸起电极15a和15b更大的面积。
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Patent Agency Ranking
公开(公告)号：US20230066655A1
公开(公告)日：2023-03-02
申请号：US17892939
申请日：2022-08-22
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI , Manabu OHTA , Kenei ONUMA
Abstract: In the coil component, since the contact area between the external terminal electrode and the element body is increased by the protrusion of the external terminal electrode, the external terminal electrode and the element body are more closely attached to each other. Therefore, the attachment strength between the external terminal electrode and the element body can be improved. Hence, it is possible to suppress peeling of the external terminal electrode from the element body.
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公开(公告)号：US20230063602A1
公开(公告)日：2023-03-02
申请号：US17898729
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, the coupling coefficient can be adjusted by the magnetic sheet and the insulator interposed between the pair of coils. For example, by increasing the magnetic permeability of the magnetic sheet so that the magnetic flux generated in the coil easily passes through the magnetic sheet, the coupling coefficient decreases. In the coil component, the coupling coefficient can be adjusted while the thickness of the element body is suppressed.
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公开(公告)号：US20230023284A1
公开(公告)日：2023-01-26
申请号：US17867361
申请日：2022-07-18
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
Abstract: In a coil component, fixing strength of an external terminal is improved. In the coil component, on the end face of the element body, the center position of the external terminal electrode in the first direction is biased toward the center position of the end face with respect to the center position of the outer end portion. Therefore, the fixing area between the external terminal electrode and the element body is increased on the center position side of the end face, and thus fixing strength between the external terminal electrode and the element body is improved.
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公开(公告)号：US20230022095A1
公开(公告)日：2023-01-26
申请号：US17866860
申请日：2022-07-18
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
Abstract: In a coil component, coupling coefficient is improved. In the coil component, the coupling position between the outer end portion of the first planar coil and the first lead-out portion is biased toward the second lead-out portion with respect to the center line of the first lead-out portion, whereby the length of the second planar coil not alongside with the outermost turn of the first planar coil is shortened. By shortening the length of the second planar coil, the coupling coefficient between the first coil portion and the second coil portion is increased.
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公开(公告)号：US20220415566A1
公开(公告)日：2022-12-29
申请号：US17845003
申请日：2022-06-21
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI , Manabu OHTA , Kenei ONUMA
IPC: H01F27/29 , H01F27/255
Abstract: An electronic component preventing peeling of an external terminal is provided. Since each of the external terminal electrodes on the upper face has a U-shaped outline, stress concentration is less likely to occur at an inner end portion than in the external terminal electrode having a corner at the inner end portion. Therefore, for example, even when an impact is applied, a situation in which the external terminal electrode peels off from the upper face due to stress concentration is prevented.
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