公开(公告)号：US20210166859A1

公开(公告)日：2021-06-03

申请号：US17109426

申请日：2020-12-02

Applicant: TDK CORPORATION

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

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/24

Abstract: 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.

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.

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.

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

IPC: H01F41/04 ,  H01F17/00 ,  H01F27/29

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.

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

IPC: H01F5/06 ,  H01F17/00

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.

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

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

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.

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

IPC: H01F27/29 ,  H01F5/04

CPC classification number: H01F27/29 ,  H01F5/04

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.