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公开(公告)号：US20220139610A1
公开(公告)日：2022-05-05
申请号：US17514020
申请日：2021-10-29
Applicant: TDK CORPORATION
Inventor： Youichi KAZUTA , Yuichi TAKUBO , Yuto SHIGA , Junichiro URABE , Noriaki HAMACHI , Kazuya TOBITA , Toshinori MATSUURA
Abstract: A multilayer coil component 1 includes an element body 2, a pair of terminal electrodes 3, and a glass layer G provided on the terminal electrode 3. Each of the pair of terminal electrodes 3 is provided with a plurality of first projecting portions 33 tapered toward the other facing terminal electrode 3 side in an end portion 31b facing the side in the facing direction of a pair of end surfaces 2a and 2b. The glass layer G is provided along the edge of the terminal electrode 3 including at least the first projecting portion 33 in the end portion 31b of the terminal electrode 3.
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公开(公告)号：US20200234874A1
公开(公告)日：2020-07-23
申请号：US16746276
申请日：2020-01-17
Applicant: TDK CORPORATION
Inventor： Hajime KATO , Hidekazu SATO , Makoto YOSHINO , Kazuya TOBITA , Yuto SHIGA , Youichi KAZUTA , Noriaki HAMACHI
Abstract: A multilayer coil component 1 includes four terminal electrodes 3, 4, 5, and 6. A part of the coil 8 as viewed from the facing direction of a pair of main surfaces 2c and 2d is disposed in at least one of first and second regions A1 and A2 formed between the pair of terminal electrodes 3 and 4 and the pair of terminal electrodes 5 and 6 disposed so as to face each other in the facing direction of the pair of side surfaces 2e and 2f and third and fourth regions formed between the pair of terminal electrodes 3 and 5 and the pair of terminal electrodes 4 and 6 disposed so as to face each other in the facing direction of the pair of end surfaces 2a and 2b.
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公开(公告)号：US20190333686A1
公开(公告)日：2019-10-31
申请号：US16391361
申请日：2019-04-23
Applicant: TDK CORPORATION
Inventor： Youichi KAZUTA , Hajime KATO , Makoto YOSHINO , Kazuya TOBITA , Yuto SHIGA , Noriaki HAMACHI
Abstract: A multilayer coil component includes an element assembly that has a first surface and second surfaces and extending in a direction orthogonal to the first surface, and terminal electrodes that has first electrode parts extending in a direction orthogonal to the first surface along the second surfaces. At least a portion of the first electrode parts of the terminal electrodes is disposed inside the element assembly. The element assembly is present between imaginary lines extending in a direction parallel to the first surface toward the second surfaces from a position farthest from the first surface in a direction orthogonal to the first surface in the first electrode parts positioned inside the element assembly and the first surface.
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公开(公告)号：US20240038436A1
公开(公告)日：2024-02-01
申请号：US18378815
申请日：2023-10-11
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
CPC classification number: H01F27/2804 , H01F17/0013 , H01F27/292 , H01F27/29 , H01F27/324 , H01F2027/2809
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20230317360A1
公开(公告)日：2023-10-05
申请号：US18187813
申请日：2023-03-22
Applicant: TDK CORPORATION
Inventor： Kazuya TOBITA , Xuran GUO , Youichi KAZUTA , Yuichi TAKUBO , Yuto SHIGA , So KOBAYASHI , Toshinori MATSUURA , Noriaki HAMACHI , Junichiro URABE , Shunya SUZUKI
CPC classification number: H01F27/292 , H01F17/0013 , H01F27/2804 , H01F2017/002 , H01F2027/2809
Abstract: In the multilayer inductor, the extending direction of the connection portion is a direction along the turn portion when viewed from the extending direction of the coil axis. In this case, the change of the current route at the junction portion between the turn portion and the connection portion becomes gentle. Therefore, the signal loss at the junction portion is reduced, a high Q value can be achieved.
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Patent Agency Ranking
公开(公告)号：US20220301764A1
公开(公告)日：2022-09-22
申请号：US17696326
申请日：2022-03-16
Applicant: TDK CORPORATION
Inventor： Kazuya TOBITA , Youichi KAZUTA , Yuichi TAKUBO , Junichiro URABE , Noriaki HAMACHI , Yuto SHIGA , Toshinori MATSUURA
Abstract: A multilayer coil component includes: a through hole connecting portion electrically connecting an end portion of the coil portion and the external terminal, in which a coil pattern and a through hole pattern are formed in each of the plurality of layers, the through hole connecting portion is formed by mutually joining a plurality of the through hole patterns in the lamination direction, the through hole pattern in at least one first layer among the plurality of layers is shifted with respect to the through hole pattern in another second layer when viewed from the lamination direction, and, when viewed from the lamination direction, a distance between the through hole pattern in the first layer and a coil pattern in the first layer is farther than a distance between the through hole pattern in the second layer and the coil pattern in the first layer.
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公开(公告)号：US20220293324A1
公开(公告)日：2022-09-15
申请号：US17682552
申请日：2022-02-28
Applicant: TDK CORPORATION
Inventor： Hajime KATO , Junichiro URABE , Toshinori MATSUURA , Kazuya TOBITA , Yuto SHIGA , Yuichi TAKUBO , Youichi KAZUTA , Noriaki HAMACHI
Abstract: In a coil component, a coil is disposed in the element body and has a pair of tip portions. A pair of external electrodes are disposed on an outer surface of the element body and respectively connected to the pair of tip portions. The element body includes a core portion including a shaft portion and a pair of side end portions. The shaft portion extends in a first direction, and the coil is wound around the shaft portion. The pair of side end portions are continuous with both ends of the shaft portion in the first direction. The shaft portion and the pair of side end portions are integrally formed of the same material. The shaft portion is covered with a resin molding portion. At least a part of the pair of side end portions is exposed from the resin molding portion.
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公开(公告)号：US20220076876A1
公开(公告)日：2022-03-10
申请号：US17531367
申请日：2021-11-19
Applicant: TDK CORPORATION
Inventor： Hajime KATO , Yuto SHIGA , Kazuya TOBITA , Youichi KAZUTA , Yuya ISHIMA , Satoru OKAMOTO , Shunji AOKI
Abstract: A laminated coil component includes an element body, a coil, and a pair of conductors, the pair of conductors is disposed on the element body. Each of the pair of conductors has an L shape when viewed from the third direction. Each of the pair of conductors includes a first conductor portion and a second conductor portion. The first conductor portion is disposed on one of first side faces. The second conductor portion is disposed on a pair of end faces. The coil includes a first coil portion and a second coil portion. The first coil portion includes a first straight portion and a pair of second straight portions. The pair of second straight portions is connected to both ends of the first straight portion. The second coil portion is curved as a whole.
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公开(公告)号：US20210249184A1
公开(公告)日：2021-08-12
申请号：US17166448
申请日：2021-02-03
Applicant: TDK CORPORATION
Inventor： Junichiro URABE , Hajime KATO , Yuto SHIGA , Kazuya TOBITA , Youichi KAZUTA , Noriaki HAMACHI , Toshinori MATSUURA , Yuichi TAKUBO , Asami TAKAHASHI , Munehiro TAKAKU
Abstract: In a coil 5 of a multilayer coil component 1, an end portion 6a of a turn 6 closest to a side surface 2e in the facing direction of the side surface 2e and a side surface 2f is connected to a first external electrode 3 and an end portion 11a of a turn 11 closest to the side surface 2f in the facing direction of the pair of side surfaces 2e and 2f is connected to a second external electrode 4. The area at which the turn 6 faces the second external electrode 4 and the area at which the turn 11 faces the first external electrode 3 are smaller than the area at which turns 7, 8, 9, and 10 other than the turn 6 and the turn 11 face the first external electrode 3 or the second external electrode 4.
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公开(公告)号：US20250069795A1
公开(公告)日：2025-02-27
申请号：US18941111
申请日：2024-11-08
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
Abstract: A multilayer coil component includes an element body, a coil in the element body, a connection conductor in the element body, and an external electrode on the element body. The element body includes a principal surface arranged to constitute a mounting surface and an end surface positioned adjacent to the principal surface. The connection conductor includes one end connected to the coil and another end connected to the external electrode. The external electrode includes a sintered metal layer formed on the element body and a conductive resin layer formed on the sintered metal layer. The sintered metal layer includes a portion on the principal surface and a portion on the end surface. The portion on the principal surface has an average thickness smaller than an average thickness of the portion on the end surface.
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