公开(公告)号：US20240331905A1

公开(公告)日：2024-10-03

申请号：US18617849

申请日：2024-03-27

申请人： TDK Corporation

发明人： Manabu OHTA ,  Ryo Fukuoka ,  Yuji Matsuura ,  Hokuto Eda ,  Takahiro Nemoto ,  Kenei Onuma ,  Masazumi Arata ,  Hitoshi Ohkubo

IPC分类号： H01F5/04 ,  H01F27/29

CPC分类号： H01F5/04 ,  H01F27/292

摘要： In the coil component, the terminal electrode enters an aperture of the element body and is jointed with the bump electrode inside the element body. That is, the terminal electrode is in contact with both the bump electrode and the element body. Therefore, as compared with the case where the bump electrode is exposed to the lower surface of the element body, a joint surface of the terminal electrode is enlarged, and high adhesion of the terminal electrode is realized.

公开(公告)号：US12020854B2

公开(公告)日：2024-06-25

申请号：US17115311

申请日：2020-12-08

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Miyuki Asai ,  Masazumi Arata ,  Hokuto Eda

IPC分类号： H01F27/32 ,  H01F17/04

CPC分类号： H01F27/324 ,  H01F17/04 ,  H01F2017/048

摘要： 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：US10998130B2

公开(公告)日：2021-05-04

申请号：US16555169

申请日：2019-08-29

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

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

摘要： 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：US20200279678A1

公开(公告)日：2020-09-03

申请号：US16800311

申请日：2020-02-25

申请人： TDK CORPORATION

发明人： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Hitoshi Ohkubo ,  Atsuyuki Nakano

IPC分类号： H01F1/147 ,  H01F27/255 ,  H01F27/28

摘要： A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. The thickness of each of the soft magnetic layers is 10 μm or more and 30 μm or less. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.

公开(公告)号：US10468184B2

公开(公告)日：2019-11-05

申请号：US14951004

申请日：2015-11-24

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

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

摘要： 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.

公开(公告)号：US12087497B2

公开(公告)日：2024-09-10

申请号：US17094433

申请日：2020-11-10

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Kenei Onuma ,  Masazumi Arata ,  Masataro Saito ,  Kohei Takahashi

IPC分类号： H01F5/00 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F27/255

CPC分类号： H01F27/323 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/255 ,  H01F2027/2809

摘要： 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：US11961652B2

公开(公告)日：2024-04-16

申请号：US16662220

申请日：2019-10-24

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Kenichi Kawabata ,  Atsushi Sato

IPC分类号： H01F27/36 ,  H01F1/20 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32

CPC分类号： H01F27/2885 ,  H01F1/20 ,  H01F27/29 ,  H01F27/32 ,  H01F27/361

摘要： In a coil component, a shield layer is provided after the unevenness of the surface of an element body is smoothened by the surface being covered with an insulating layer. A Cu layer of the shield layer is provided on a smooth surface, and thus a thickness variation can be suppressed and the Cu layer can be formed with a substantially uniform thickness. In the coil component, a point where the shield layer is thin or a point lacking the shield layer is unlikely to be generated and a functional degradation of the shield layer is effectively suppressed.

公开(公告)号：US11705265B2

公开(公告)日：2023-07-18

申请号：US16877898

申请日：2020-05-19

申请人： TDK CORPORATION

发明人： Miyuki Asai ,  Takahiro Kawahara ,  Masazumi Arata ,  Hitoshi Ohkubo

IPC分类号： H01F5/06 ,  H01F27/255

CPC分类号： H01F27/255 ,  H01F5/06

摘要： In a coil component, a second magnetic portion disposed in the vicinity of a coil is designed to have a higher proportion of Fe than a metal magnetic powder-containing resin constituting a first magnetic portion. Therefore, a magnetic flux of the coil flows smoothly. Although the second magnetic portion has a relatively lower withstand voltage than the first magnetic portion, since the second magnetic portion is surrounded by the first magnetic portion, it is not exposed on an outer surface of a magnetic body. For this reason, a situation in which the coil and external terminal electrodes are short-circuited with the second magnetic portion therebetween is effectively curbed, and short-circuiting between the coil and the external terminal electrodes can be curbed.

公开(公告)号：US11569024B2

公开(公告)日：2023-01-31

申请号：US16877831

申请日：2020-05-19

申请人： TDK CORPORATION

发明人： Kenei Onuma ,  Masazumi Arata ,  Hitoshi Ohkubo

IPC分类号： H01F27/32 ,  H01F27/28

摘要： An upper end portion and a lower end portion of a second magnetic portion of a coil component are further away from a coil than when a third part and a fifth part are not present. For this reason, a magnetic flux is unlikely to be concentrated in the upper end portion and the lower end portion of the second magnetic portion, so that magnetic saturation is unlikely to occur. Therefore, improvement of direct current superimposition characteristics is realized in the coil component.

公开(公告)号：US11557427B2

公开(公告)日：2023-01-17

申请号：US16733293

申请日：2020-01-03

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Yuuya Kaname ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F27/32 ,  H01F17/00 ,  H01F17/04

摘要： 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.