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：US20220189679A1

公开(公告)日：2022-06-16

申请号：US17545607

申请日：2021-12-08

Applicant: TDK CORPORATION

Inventor： Ryo FUKUOKA ,  Hironori KIMATA ,  Masataro SAITO ,  Masazumi ARATA ,  Hitoshi OHKUBO

IPC: H01F27/28 ,  H01F27/32

Abstract: In the coil component, the maximum reference surface height of the entire wall of the outermost wall and the innermost wall is the same as the reference surface height of the winding part of the coil, that is, equal to or less than the reference surface height of the winding part of the coil. In addition, in both the outermost wall and the innermost wall, the reference surface height of the second side surface is lower than the reference surface height of the winding part of the coil. In this case, in the vicinity of the upper surface of the outermost wall and the innermost wall, the magnetic flux toward the main surface side of the substrate is suppressed from being blocked by the outermost wall and the innermost wall, and the magnetic flux circulation is improved. Thus, the coil characteristics of the coil component are improved.

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：US20210151248A1

公开(公告)日：2021-05-20

申请号：US17094433

申请日：2020-11-10

Applicant: TDK CORPORATION

Inventor： Hitoshi OHKUBO ,  Kenei ONUMA ,  Masazumi ARATA ,  Masataro SAITO ,  Kohei TAKAHASHI

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

Abstract: In a coil component, a main body portion is made of a metal magnetic powder-containing resin, and thus a resin component appears on end surfaces of the main body portion. In addition, since external terminal electrodes are made of a conductive resin, a resin component also appears on the surfaces of the external terminal electrodes. Accordingly, insulating coating layers are integrally covered with high adhesion with the end surfaces of the main body portion and the external terminal electrodes by the insulating coating layers coming into contact with the end surfaces of the main body portion so as to straddle the external terminal electrodes.

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：US20240194392A1

公开(公告)日：2024-06-13

申请号：US18528876

申请日：2023-12-05

Applicant: TDK CORPORATION

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

IPC: H01F27/28

CPC classification number: H01F27/2804 ,  H01F2027/2809

Abstract: In the coil component, the thickness of the first coil portion and the thickness of the second coil portion are different from each other in the thickness direction of the substrate, thereby achieving improvement in characteristics such as self-resonance frequencies and heat dissipation.

公开(公告)号：US20230022189A1

公开(公告)日：2023-01-26

申请号：US17866837

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

Abstract: 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.

公开(公告)号：US20220189682A1

公开(公告)日：2022-06-16

申请号：US17545629

申请日：2021-12-08

Applicant: TDK CORPORATION

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

IPC: H01F27/29 ,  H01F27/32 ,  H01F17/04

Abstract: 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.

公开(公告)号：US20210183566A1

公开(公告)日：2021-06-17

申请号：US17115311

申请日：2020-12-08

Applicant: TDK CORPORATION

Inventor： Hitoshi OHKUBO ,  Miyuki ASAI ,  Masazumi ARATA ,  Hokuto EDA

IPC: H01F27/32 ,  H01F17/04

Abstract: In a coil component, the pressure resistance is improved by main surfaces and of a main body portion being covered with an insulating layer. The main body portion has a surface part, the resin ratio of the surface part is higher than the internal resin ratio, and insulation is enhanced at the surface part. As a result, the pressure resistance on the surface of the main body portion is further improved and the pressure resistance of the entire coil component is further improved.

公开(公告)号：US20210166858A1

公开(公告)日：2021-06-03

申请号：US17108023

申请日：2020-12-01

Applicant: TDK CORPORATION

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

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

Abstract: 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.