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公开(公告)号：US20240290529A1
公开(公告)日：2024-08-29
申请号：US18582739
申请日：2024-02-21
Applicant: TDK Corporation
Inventor： Mitsuru MIURA , Tomonaga NISHIKAWA , Masaki ENDO , Kazufumi SHIOIRI , Futa GAKIYA , Hiroki NAKAGOMI
CPC classification number: H01F17/0013 , H01F27/292
Abstract: Disclosed herein is a coil component that includes plural conductor layers embedded in the element body, first and second bump conductors, and first and second dummy bump conductors. Each of the conductor layers includes a coil pattern, first and second connection patterns respectively connected to the first and second bump conductors, and first and second dummy connection patterns respectively connected to the first and second dummy bump conductors. The conductor layers include first and second conductor layers. The first dummy connection pattern included in each of the first and second conductor layers has a cutout part. At least a part of the outer peripheral end of the coil pattern included in each of the first and second conductor layers is disposed within the cutout part.
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公开(公告)号：US20240186056A1
公开(公告)日：2024-06-06
申请号：US18525613
申请日：2023-11-30
Applicant: TDK Corporation
Inventor： Yuuichi KAWAGUCHI , Kazuhiro YOSHIKAWA , Tomonaga NISHIKAWA , Naoaki FUJII , Liyi CHEN
CPC classification number: H01F27/2804 , H01F27/324 , H01F41/043 , H01F41/12
Abstract: Disclosed herein is a coil component that includes a magnetic element body, a coil pattern and a conductor post embedded in the magnetic element body, a post protective film provided between the conductor post and the magnetic element body, a cover insulating film covering a mounting surface of the magnetic element body, and a terminal electrode provided on the cover insulating film and connected to the conductor post through a first opening formed in the cover insulating film. The terminal electrode includes: a first conductor layer contacting the conductor post through the first opening and having a second opening through which a part of the conductor post is exposed; and a second conductor layer having a resistance value lower than the first conductive material, covering the first conductor layer, and contacting the part of the conductor post through the second opening.
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公开(公告)号：US20230132354A1
公开(公告)日：2023-04-27
申请号：US17971137
申请日：2022-10-21
Applicant: TDK Corporation
Inventor： Tomonaga NISHIKAWA , Masaki ENDO , Masaki YONEYAMA , Osamu NAKADA , Hironori SATO , Ryota NAITO
Abstract: Disclosed herein is a surface-mount electronic component that includes a main body part having a mounting surface, a first terminal electrode provided on one end side of the mounting surface in a long side direction thereof, and a second terminal electrode provided on other end side of the mounting surface in the long side direction thereof. Each of the first and second terminal electrode includes a main area extending in a short side direction of the mounting surface and a protruding part provided at a center portion in the short side direction so as to protrude from the main area to an end portion of the mounting surface in the long side direction.
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公开(公告)号：US20230126614A1
公开(公告)日：2023-04-27
申请号：US17971177
申请日：2022-10-21
Applicant: TDK Corporation
Inventor： Masanori SUZUKI , Takuya TAKEUCHI , Tomonaga NISHIKAWA , Nobuya TAKAHASHI , Naoaki FUJII
Abstract: Disclosed herein is a coil component that includes a coil part having a structure in which a plurality of conductor layers each having a coil pattern are stacked in a coil axis direction through a plurality of interlayer insulating films, a first magnetic layer covering the coil part in the coil axis direction, and a second magnetic layer positioned in an inner diameter area of the coil part. The plurality of interlayer insulating films include a first interlayer insulating film positioned closest to the first magnetic layer. The first and second magnetic layers contact each other through an opening formed in the first interlayer insulating film. The opening has a shape whose diameter increases as a distance from an interface between the first and second magnetic layers increases.
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公开(公告)号：US20180323003A1
公开(公告)日：2018-11-08
申请号：US15961101
申请日：2018-04-24
Applicant: TDK CORPORATION
Inventor： Naoaki FUJII , Tomonaga NISHIKAWA , Kouji KAWAMURA , Nobuya TAKAHASHI
CPC classification number: H01F27/292 , H01F27/2804 , H01F27/323 , H01F2027/2809
Abstract: Disclosed herein is a coil component that includes a coil part in which a plurality of conductor layers and a plurality of interlayer insulting layers are alternately laminated, and an external terminal. Each of the conductor layers has a coil conductor pattern and an electrode pattern exposed from the coil part. The electrode patterns are connected to each other through a plurality of via conductors penetrating the interlayer insulating layers. At least one of the interlayer insulating layers is exposed from the coil part positioned between the plurality of electrode patterns. The external terminal is formed on the electrode patterns exposed from the coil part so as to avoid an exposed part of the interlayer insulating layer.
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Patent Agency Ranking
公开(公告)号：US20240412917A1
公开(公告)日：2024-12-12
申请号：US18696745
申请日：2022-06-27
Applicant: TDK Corporation
Inventor： Takeshi YOKOYAMA , Toshiyuki ABE , Yuki HASHIMOTO , Takeshi OKUMURA , Tomonaga NISHIKAWA
Abstract: To prevent the occurrence of a short-circuit failure through a magnetic body layer. A coil component includes interlayer insulating films and conductor layers which are alternately stacked on a magnetic body layer. The conductor layers respectively have coil patterns, terminal patterns which are provided at positions overlapping a terminal electrode, and terminal patterns which are provided at positions overlapping a terminal electrode. The terminal patterns are connected to the terminal electrode, and the terminal patterns are connected to the terminal electrode. The terminal pattern is insulated from the terminal electrode. This can prevent a short circuit failure between a coil pattern or terminal pattern and the terminal pattern through the magnetic body layer.
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公开(公告)号：US20240170202A1
公开(公告)日：2024-05-23
申请号：US18549264
申请日：2022-02-22
Applicant: TDK Corporation
Inventor： Yuuichi KAWAGUCHI , Naoaki FUJII , Masanori SUZUKI , Takuya TAKEUCHI , Tomonaga NISHIKAWA , Hiroki SHIBA
CPC classification number: H01F27/292 , H01F17/04
Abstract: To improve a coil component having a structure in which a coil part is embedded in a magnetic member. A coil component includes a coil part embedded in the magnetic members and terminal electrodes each made of a conductive paste. Conductor layers constituting the coil part respectively have coil conductor patterns and electrode patterns exposed from a mounting surface. The terminal electrode has an area provided at a position covering the electrode patterns on the mounting surface and areas provided at positions not covering the electrode patterns on the mounting surface. A part of the area constitutes a protruding part protruding in the x-direction. The terminal electrode thus has the protruding part, thereby making misalignment of mounting position in the z-direction less likely to occur at the time of mounting.
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公开(公告)号：US20240062949A1
公开(公告)日：2024-02-22
申请号：US18366316
申请日：2023-08-07
Applicant: TDK Corporation
Inventor： Masaki ENDO , Tomonaga NISHIKAWA , Mitsuru MIURA , Eisuke YONEKURA , Akira MOTOHASHI
IPC: H01F27/29
CPC classification number: H01F27/292
Abstract: Disclosed herein is a coil component that includes a coil conductor embedded in the element body; a first bump conductor exposed to the mounting surface and the first and side surfaces; a second bump conductor exposed to the mounting surface and the second and fourth side surfaces; a first dummy bump conductor exposed to the mounting surface and the first and fourth side surfaces; a second dummy bump conductor exposed to the mounting surface and the second and third side surfaces; a first conductive resin layer connecting the first bump conductor and first dummy bump conductor; and a second conductive resin layer connecting the second bump conductor and the second dummy bump conductor. The first and bump conductors and the first and second dummy bump conductors are not covered at least partly with the first conductive resin layer.
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公开(公告)号：US20230420184A1
公开(公告)日：2023-12-28
申请号：US18330628
申请日：2023-06-07
Applicant: TDK Corporation
Inventor： Yuuichi KAWAGUCHI , Naoaki FUJII , Tomonaga NISHIKAWA , Liyi CHEN , Rui SAKUMA
CPC classification number: H01F41/041 , H01F27/327 , H01F17/0013
Abstract: Disclosed herein is a coil component that includes an element body having a mounting surface, a coil part embedded in the element body, and a first conductor post embedded in the element body. The first conductor post has a first end connected to the coil part and a second end exposed from the mounting surface. A surface of the element body on the mounting surface side has a recess from a surface of the first conductor post.
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公开(公告)号：US20230420176A1
公开(公告)日：2023-12-28
申请号：US18330635
申请日：2023-06-07
Applicant: TDK Corporation
Inventor： Yuuichi KAWAGUCHI , Naoaki FUJII , Tomonaga NISHIKAWA , Liyi CHEN , Mitsuo NATORI
CPC classification number: H01F27/2804 , H01F41/041 , H01F27/24 , H01F2027/2809
Abstract: Disclosed herein is a coil component that includes a magnetic element body, and a coil part embedded in the magnetic element body. The magnetic element body includes a first region covering the coil part from one side in a coil axis direction, a second region covering the coil part from other side in the coil axis direction, and a third region positioned in an inner diameter area of the coil part so as to connect the first and second regions. The height of the coil part in the coil axis direction decreases toward the inner diameter area.
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