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    DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT
    1.
    发明申请
    DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT 有权

    公开(公告)号：US20250059094A1

    公开(公告)日：2025-02-20

    申请号：US18762275

    申请日：2024-07-02

    Applicant: TDK CORPORATION

    Inventor： Toshihiro IGUCHI ,  Kenichiro Masuda ,  Tetsuya Yoshiyama ,  Toshio Asahi

    IPC: C04B35/468 ,  H01G4/12

    Abstract: A dielectric composition includes main phase grains and segregation grains. The segregation grains at least partly include RE-Mg—Ti—O segregation grains including “RE”, Mg, Ti, and O. “RE” includes a rare earth element. “RE”, Mg, and Ti in the RE-Mg—Ti—O segregation grains constitute 70 parts by mol or more in total out of 100 parts by mol of a total of metal elements in the RE-Mg—Ti—O segregation grains. A ratio of Mg to a total of “RE” and Mg in the RE-Mg—Ti—O segregation grains ranges from 0.1 to 0.3.

    DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC DEVICE
    2.
    发明申请
    DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC DEVICE 有权

    公开(公告)号：US20220380257A1

    公开(公告)日：2022-12-01

    申请号：US17748524

    申请日：2022-05-19

    Applicant: TDK CORPORATION

    Inventor： Toshihiro IGUCHI ,  Yuichiro SUEDA ,  Ryota NAMIKI

    IPC: C04B35/468 ,  H01G4/12 ,  H01G4/30

    Abstract: A dielectric composition includes dielectric particles, grain boundary phases, and segregations. The dielectric particles each include a perovskite compound represented by ABO3 as a main component. The grain boundary phases are located between the dielectric particles. The segregations exist in a part of the grain boundary phases and include at least Al, Si, and O. A molar ratio (Al/(Al+Si)) of an Al content to a total content of Al and Si in the segregations is 0.45 or more and 0.75 or less.

    ELECTRONIC COMPONENT
    4.
    发明申请
    ELECTRONIC COMPONENT 有权

    公开(公告)号：US20220020533A1

    公开(公告)日：2022-01-20

    申请号：US17373672

    申请日：2021-07-12

    Applicant: TDK CORPORATION

    Inventor： Toshihiro IGUCHI ,  Norihisa ANDO

    IPC: H01G4/248 ,  H01G4/232 ,  H01G2/06

    Abstract: An electronic component includes an element body, a pair of external electrodes respectively disposed at both ends of the element body in a first direction, and a pair of metal terminals respectively connected to the pair of external electrodes with solder. Each metal terminal includes a connection opposing the corresponding external electrode in the first direction and formed with a plurality of grooves and includes a leg extending from the connection. The connection includes a pair of end edges separated from each other in a third direction intersecting with a second direction where the leg extends from the connection. The grooves extend in a direction different from the second direction and intersecting with the third direction so that the grooves are separated from one of the pair of end edges. A surface included in the connection and defining each of the grooves is in contact with the solder.

    DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT
    5.
    发明申请
    DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT 有权

    公开(公告)号：US20210179494A1

    公开(公告)日：2021-06-17

    申请号：US17115100

    申请日：2020-12-08

    Applicant: TDK CORPORATION

    Inventor： Toshihiro IGUCHI

    IPC: C04B35/03 ,  H01G7/02

    Abstract: A dielectric composition includes a main phase and a Ca—Si—P—O segregation phase. The main phase includes a main component expressed by ABO3. “A” includes at least one selected from calcium and strontium. “B” includes at least one selected from zirconium, titanium, hafnium, and manganese. The Ca—Si—P—O segregation phase includes at least calcium, silicon, and phosphorus.

    MULTILAYER CERAMIC ELECTRONIC COMPONENT
    6.
    发明申请
    MULTILAYER CERAMIC ELECTRONIC COMPONENT 审中-公开

    公开(公告)号：US20190304687A1

    公开(公告)日：2019-10-03

    申请号：US16285543

    申请日：2019-02-26

    Applicant: TDK CORPORATION

    Inventor： Toshihiro IGUCHI

    IPC: H01G4/12 ,  H01G4/008 ,  H01G4/012 ,  H01G4/248 ,  H01G4/30

    Abstract: A multilayer ceramic electronic component includes a ceramic element body formed by alternately laminating dielectric layers and internal electrode layers. The dielectric layers include a main component containing barium titanate and a sub-component containing boron oxide and/or lithium oxide. The internal electrode layers include a main component of copper and/or silver. A coverage ratio of the internal electrode layers to the dielectric layers is 98% or less.

    MULTILAYER CERAMIC CAPACITOR
    7.
    发明申请
    MULTILAYER CERAMIC CAPACITOR 审中-公开

    公开(公告)号：US20170345571A1

    公开(公告)日：2017-11-30

    申请号：US15497926

    申请日：2017-04-26

    Applicant: TDK CORPORATION

    Inventor： Takuya IMAEDA ,  Toshihiro IGUCHI ,  Satoshi TAKAHARA

    IPC: H01G4/30 ,  H01G4/005 ,  H01G4/12 ,  H01G4/248

    CPC classification number: H01G4/30 ,  H01G4/005 ,  H01G4/012 ,  H01G4/1236 ,  H01G4/248

    Abstract: A plurality of dielectric layers containing one of CaZrO3 and SrZrO3 and a plurality of internal electrodes containing Ni are alternately disposed in a second direction. The plurality of internal electrodes includes a plurality of first internal electrodes and a plurality of second internal electrodes. Each of first connecting portions of the first internal electrodes includes a first end portion connected to a first terminal electrode. Each of second connecting portions of the second internal electrodes includes a second end portion connected to a second terminal electrode. The first end portions of the first connecting portions adjacent to each other in the second direction are located not to overlap with each other when viewed from the second direction. The second end portions of the second connecting portions adjacent to each other in the second direction are located not to overlap with each other when viewed from the second direction.

    DIELECTRIC AND MULTILAYER ELECTRONIC DEVICE
    8.
    发明申请
    DIELECTRIC AND MULTILAYER ELECTRONIC DEVICE 有权

    公开(公告)号：US20250037936A1

    公开(公告)日：2025-01-30

    申请号：US18756548

    申请日：2024-06-27

    Applicant: TDK CORPORATION

    Inventor： Ryota NAMIKI ,  Toshihiro IGUCHI

    IPC: H01G4/12 ,  H01G4/236 ,  H01G4/30

    Abstract: A dielectric includes a dielectric grain, a segregate, and a pore. The segregate and the pore are in contact to form a specific combination in a section of the dielectric. A multilayer electronic device includes a dielectric including a dielectric grain, a segregate, and a pore. The segregate and the pore are in contact to form a specific combination in a section of the dielectric.

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