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

IPC: H01F5/06 ,  H01F5/04 ,  H01F1/14

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.

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.

公开(公告)号：US20210327637A1

公开(公告)日：2021-10-21

申请号：US17234029

申请日：2021-04-19

Applicant: TDK CORPORATION

Inventor： Hokuto EDA ,  Masataro SAITO ,  Kohei TAKAHASHI ,  Takamasa IWASAKI ,  Hitoshi OHKUBO ,  Masazumi ARATA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/255 ,  H01F27/32

Abstract: 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.

公开(公告)号：US20160351316A1

公开(公告)日：2016-12-01

申请号：US15166519

申请日：2016-05-27

Applicant: TDK CORPORATION

Inventor： Hitoshi OHKUBO ,  Masazumi ARATA ,  Manabu OHTA ,  Yuuya KANAME ,  Yoshihiro MAEDA ,  Takahiro KAWAHARA ,  Hokuto EDA ,  Shigeki SATO

IPC: H01F27/255 ,  H01F27/28

Abstract: A coil component in which a change in thicknesses of the winding part is prevented is provided. According to the coil component, since each of a pair of neighboring resin walls and a seed part between the pair of resin walls are separated by a predetermined distance, a plating part grown on the seed part is easy to grow uniformly between the pair of neighboring resin walls. For this reason, the winding part whose surface is gentle and in which a change in thickness is prevented is obtained by plating growth.

Abstract translation: 提供防止卷绕部的厚度变化的线圈部件。 根据线圈部件，由于一对相邻树脂壁和一对树脂壁之间的种子部分中的每一个分开预定距离，所以在种子部分上生长的电镀部分容易在所述一对相邻的树脂壁之间均匀地生长 树脂墙壁。 由于这个原因，通过电镀生长获得表面平缓并且其中防止厚度变化的卷绕部分。

公开(公告)号：US20160155556A1

公开(公告)日：2016-06-02

申请号：US14951004

申请日：2015-11-24

Applicant: TDK CORPORATION

Inventor： Hitoshi OHKUBO ,  Masazumi ARATA ,  Manabu OHTA ,  Shou KAWADAHARA ,  Yoshihiro MAEDA ,  Takahiro KAWAHARA ,  Hokuto EDA ,  Shigeki SATO

IPC: H01F27/02 ,  H01F41/04 ,  H01F27/28 ,  H01F41/02

CPC classification number: H01F41/043 ,  H01F17/0013 ,  H01F27/292 ,  H01F41/046 ,  H01F2017/0066

Abstract: In a coil component 1 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.

Abstract translation: 在线圈部件1及其制造方法中，通过电镀生长线圈的绕组部分，以便在通过电镀生长线圈之前提供的树脂体的树脂壁之间延伸。 在电镀生长期间，树脂壁插入在线圈的绕组部分的相邻匝之间，因此不能发生线圈的绕组部分的相邻匝之间的接触。

公开(公告)号：US20160155550A1

公开(公告)日：2016-06-02

申请号：US14952028

申请日：2015-11-25

Applicant: TDK CORPORATION

Inventor： Hitoshi OHKUBO ,  Masazumi ARATA ,  Manabu OHTA ,  Shou KAWADAHARA ,  Yoshihiro MAEDA ,  Takahiro KAWAHARA ,  Hokuto EDA ,  Shigeki SATO

IPC: H01F3/08

CPC classification number: H01F1/24 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/292 ,  H01F2017/048

Abstract: In a coil component (planar coil element), at least part of a third metal magnetic powder constituting a metal magnetic powder and having a minimum average grain diameter is uncoated, which suppresses a reduction in magnetic permeability. On the other hand, the remaining metal powders are coated with glass, which improves the insulating properties of a metal magnetic powder-containing resin and reduces core loss.

Abstract translation: 在线圈部件（平面线圈元件）中，构成金属磁性粉末的具有最小平均粒径的第三金属磁性粉末的至少一部分是未涂覆的，这抑制了磁导率的降低。 另一方面，剩余的金属粉末涂覆有玻璃，这提高了含金属磁性粉末的树脂的绝缘性能并降低铁损。

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

IPC: H01F27/29 ,  H01F27/32

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.

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

IPC: H01F1/14 ,  H01F5/06 ,  H01F5/04

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.

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

IPC: H01F27/29 ,  H01F27/32 ,  H01F27/02

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.

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

IPC: H01F27/28 ,  H01F27/32 ,  H01F27/29 ,  H01F27/02

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.