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公开(公告)号：US20240331904A1
公开(公告)日：2024-10-03
申请号：US18616465
申请日：2024-03-26
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Hokuto EDA , Masazumi ARATA , Miyuki ASAI , Takahiro HOSOKAWA , Yuji MATSUURA
Abstract: Since each of an inner core, an outer core portion, and exterior portions in an element body is constituted by a magnetic body having the same material composition, internal stress is less likely to occur at the interface therebetween, and cracks due to internal stress are less likely to occur at the interface. Since a filling rate of a maximum magnetic particle having relatively high magnetic permeability is high in the inner core, the magnetic permeability of the inner core is significantly increased, and the coil characteristics of the coil component are improved.
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公开(公告)号：US20240136116A1
公开(公告)日：2024-04-25
申请号：US18490358
申请日：2023-10-18
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI , Hiroki ASAFUSA , Takahiro NEMOTO
CPC classification number: H01F27/292 , H01F27/2804 , H01F27/306
Abstract: Since the coil body of the coil component includes a plurality of coils and the first coil is one of the plurality of coils included in the coil body, the current route from the external terminal of the first to the outer peripheral turn of the second coil portion where stray capacitance occurs is significantly shorter than the route of current flowing between the pair of external terminals, and the voltage drop in the outer peripheral turn of the second coil portion is relatively small, so that stray capacitance between the second coil portion and the first external terminal is small.
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公开(公告)号：US20240136109A1
公开(公告)日：2024-04-25
申请号：US18490293
申请日：2023-10-18
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI , Hiroki ASAFUSA , Takahiro NEMOTO
IPC: H01F27/28
CPC classification number: H01F27/2852
Abstract: The coil body of the coil component includes a first coil, a second coil, and a third coil arranged in order along one direction when viewed from the facing direction of the pair of main surfaces of the element body. The first coil, the second coil, and the third coil have alternating winding directions, and the number of turns of the second coil is relatively small, thereby improving the characteristics of the coil component.
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公开(公告)号：US20200373064A1
公开(公告)日：2020-11-26
申请号：US16877772
申请日：2020-05-19
Applicant: TDK CORPORATION
Inventor： Miyuki ASAI , Hokuto EDA , Masazumi ARATA , Hitoshi OHKUBO
IPC: H01F27/28 , H01F27/255 , H01F27/32
Abstract: In a coil component, an uneven structure provided by an insulation layer and a resin wall contributes to extension of a contact area with respect to a magnetic body, so that an adhesive force with respect to the magnetic body is improved. In addition, the magnetic body protrudes downward toward an exposed region of the resin wall corresponding to a recessed portion in the uneven structure, a volume thereof is increased, and coil characteristics such as an inductance value are improved.
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公开(公告)号：US20190385792A1
公开(公告)日：2019-12-19
申请号：US16555169
申请日：2019-08-29
Applicant: TDK CORPORATION
Inventor： Hitoshi OHKUBO , Masazumi ARATA , Manabu OHTA , Shou KAWADAHARA , Yoshihiro MAEDA , Takahiro KAWAHARA , Hokuto EDA , Shigeki SATO
IPC: H01F41/04
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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Patent Agency Ranking
公开(公告)号：US20240331933A1
公开(公告)日：2024-10-03
申请号：US18618231
申请日：2024-03-27
Applicant: TDK Corporation
Inventor： Hokuto EDA , Takahiro Nemoto , Manabu Ohta , Ryo Fukuoka , Masazumi Arata , Hitoshi Ohkubo
CPC classification number: H01F27/324 , H01F5/06
Abstract: In the coil component, the edge of the aperture of the protection film covering the coil from the lower surface side of the element body does not extend in the same plane. In this case, even if a crack occurs in the joint region between the coil and the bump electrode, the crack is less likely to cross the joint region as compared with the case where the edge extends in the same plane. Therefore, in the coil component, the crack is effectively suppressed.
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公开(公告)号：US20230215618A1
公开(公告)日：2023-07-06
申请号：US18119473
申请日：2023-03-09
Applicant: TDK CORPORATION
Inventor： Takahiro KAWAHARA , Manabu OHTA , Kenei ONUMA , Yuuya KANAME , Ryo FUKUOKA , Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI
CPC classification number: H01F27/292 , H01F17/0013 , H01F17/04 , H01F41/041 , H05K1/181 , H01F27/2804 , H01F2017/048
Abstract: In an electronic component, a terminal electrode has a thickest portion and a part thinner than the thickest portion. Accordingly, an increase in solder fillet forming region occurs when the electronic component is solder-mounted onto a predetermined mounting substrate. In the electronic component, mounting strength is improved as a result of the increase in solder fillet forming region. In addition, in the electronic component, the thickest portion overlaps a bump electrode in a direction orthogonal to the lower surface of an element body. Accordingly, the impact that is applied to the electronic component during the mounting onto the mounting substrate is reduced and the impact resistance of the electronic component is improved.
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公开(公告)号：US20230063586A1
公开(公告)日：2023-03-02
申请号：US17898767
申请日：2022-08-30
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
Abstract: Since the magnetic sheet is adopted as the coil component, magnetic saturation is likely to occur in the magnetic sheet, and it is considered that the DC superimposition characteristic of the coil component is deteriorated. However, since the inner edge of the coil structure backs down with respect to the inner edge of the magnetic sheet so that the magnetic flux generated in the coil easily circulates, the deterioration of the DC superimposition characteristics due to the adoption of the magnetic sheet is suppressed.
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公开(公告)号：US20210327641A1
公开(公告)日：2021-10-21
申请号：US17233790
申请日：2021-04-19
Applicant: TDK CORPORATION
Inventor： Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
IPC: H01F27/28 , H01F27/255
Abstract: In a coil component, a stray capacitance may occur between a conducting wires of an upper layer and a conducting wires of a lower layer arranged in the vertical direction due to the potential difference between them. In the coil component, a separation distance between the conducting wire of the upper layer and the conducting wire of the lower layer is designed to be longer than twice a thickness of an insulation coating of a portion covering a side surface of the conducting wire, and a sufficiently long distance is secured, and thus the stray capacitance is reduced.
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公开(公告)号：US20210193369A1
公开(公告)日：2021-06-24
申请号：US17126323
申请日：2020-12-18
Applicant: TDK CORPORATION
Inventor： Masataro SAITO , Masazumi ARATA , Hokuto EDA , Kohei TAKAHASHI , Takamasa IWASAKI
IPC: H01F27/28 , H01F27/255 , H01F27/32
Abstract: In a coil component, a non-magnetic part is bridged between a first coil and a second coil in a cross section of an element body. Therefore, a magnetic flux in a direction along a magnetic core of the first coil and a magnetic core of the second coil is hindered by the non-magnetic part between the first coil and the second coil. Accordingly, a magnetic flux of the first coil and a magnetic flux of the second coil are difficult to interfere with each other.
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