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公开(公告)号：US20230022189A1
公开(公告)日：2023-01-26
申请号：US17866837
申请日：2022-07-18
申请人： TDK CORPORATION
发明人： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
摘要： In a coil component, heat radiation around a through conductor is improved. In the coil component, since the cross-sectional area of the inner end portion of the planar coil is designed to be relatively large, heat generated in the through conductor is easily transferred to the inner end portion. Since heat is efficiently transferred from the through conductor to the inner end portion, high heat radiation around the through conductor is achieved.
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公开(公告)号：US20220189682A1
公开(公告)日：2022-06-16
申请号：US17545629
申请日：2021-12-08
申请人： TDK CORPORATION
摘要： By overlapping the protruding portion of the first insulator and the protruding portion of the second insulator via the protruding portion of the substrate, the DC superposition characteristic of the coil component is improved.
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公开(公告)号：US20210166858A1
公开(公告)日：2021-06-03
申请号：US17108023
申请日：2020-12-01
申请人： TDK CORPORATION
摘要： In a coil component, a double coil is configured of a first coil portion and a second coil portion, and a first through conductor of the first coil portion and a second through conductor of the second coil portion are adjacent to each other. Thus, the first coil portion and the second coil portion have enhanced magnetic coupling at locations (that is, the first through conductor and the second through conductor) at which planar coil patterns of upper and lower surfaces of an insulating substrate are connected, in addition to magnetic coupling in the planar coil patterns wound around a through hole. Therefore, according to the coil component, a high coupling coefficient between the first coil portion and the second coil portion is realized.
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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
申请人： TDK CORPORATION
发明人： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
摘要： 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
申请人： TDK CORPORATION
发明人： Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
IPC分类号： H01F27/28 , H01F27/255
摘要： 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
申请人： TDK CORPORATION
IPC分类号： H01F27/28 , H01F27/255 , H01F27/32
摘要： 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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公开(公告)号：US20210166859A1
公开(公告)日：2021-06-03
申请号：US17109426
申请日：2020-12-02
申请人： TDK CORPORATION
摘要： In a coil component, a first planar coil and a second planar coil are wound around a common magnetic core and are magnetically coupled to each other. However, the first planar coil and the second planar coil are not electrically connected to each other and form coil structures which are separate from each other. Thus, as compared with a case in which the first planar coil and the second planar coil form one coil structure, the first planar coil and the second planar coil are less likely to affect each other's characteristics.
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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
申请人： TDK CORPORATION
发明人： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
摘要： 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
申请人： TDK CORPORATION
发明人： Hokuto EDA , Hitoshi OHKUBO , Masazumi ARATA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI
IPC分类号： H01F27/32 , H01F27/29 , H01F27/255
摘要： 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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公开(公告)号：US20210327637A1
公开(公告)日：2021-10-21
申请号：US17234029
申请日：2021-04-19
申请人： TDK CORPORATION
发明人： Hokuto EDA , Masataro SAITO , Kohei TAKAHASHI , Takamasa IWASAKI , Hitoshi OHKUBO , Masazumi ARATA
IPC分类号： H01F27/28 , H01F27/29 , H01F27/255 , H01F27/32
摘要： In an insulation layer of a coil component, a thickness of a second covering part and a third covering part located on the penetration hole side of a first covering part is thinner than that of the first covering part. A stray capacitance occurring between a flat coil pattern and external terminal electrodes is reduced by making the first covering part of the insulation layer thicker than the second covering part and the third covering part. Further, since the second covering part and the third covering part of the insulation layers are thinner than the first covering part, a magnetic volume is increased while external dimensions of the base body is maintained, and thus a high inductance is realized.
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