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公开(公告)号：US20250037934A1
公开(公告)日：2025-01-30
申请号：US18763080
申请日：2024-07-03
Applicant: TDK Corporation
Inventor： Hikaru HIRABAYASHI , Daisuke HIMETA , Daisuke YOSHIDA , Yuya NAGASAKI
Abstract: In an element body of a multilayer capacitor C1, a plurality of dielectric layers and a plurality of internal electrode layers extend in a first and second direction orthogonal to each other, and the plurality of dielectric layers and the plurality of internal electrode layers are alternately laminated in a third direction intersecting the first direction and second direction. The element body includes at least one end surface. At least one internal electrode layer among the plurality of internal electrode layers is exposed from the plurality of dielectric layers at at least one end surface. The external electrode terminal is provided on the at least one end surface and is connected to the at least one internal electrode layer. In the element body, a weight ratio of a metal containing Ni is from 20% to 25%, and a weight ratio of sulfur is from 3 ppm to 20 ppm.
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公开(公告)号：US20220285093A1
公开(公告)日：2022-09-08
申请号：US17682460
申请日：2022-02-28
Applicant: TDK CORPORATION
Inventor： Hikaru HIRABAYASHI , Daisuke YOSHIDA , Masato KIMURA
Abstract: A multilayer capacitor includes an element body haying a pair of end surfaces, and a pair of side surfaces and a pair of main surfaces; and a pair of external electrodes. The element body includes an inner layer portion in which a plurality of internal electrodes and a plurality of dielectric layers are alternately stacked in a second direction where the pair of main surfaces face each other, and a pair of outer layer portions disposed outside the inner layer portion in the second direction. On at least one of the pair of end surfaces, the internal electrode of the inner layer portion protrudes outward in the first direction from the outer layer portion by a predetermined protrusion amount. A ratio of the protrusion amount to a dimension of one outer layer portion in the second direction ranges from 96,000 ppm to 176,000 ppm.
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Patent Agency Ranking
公开(公告)号：US20220285102A1
公开(公告)日：2022-09-08
申请号：US17682582
申请日：2022-02-28
Applicant: TDK CORPORATION
Inventor： Hikaru HIRABAYASHI , Daisuke YOSHIDA , Masato KIMURA
Abstract: A multilayer capacitor includes an element body, and a pair of side surfaces and a pair of main surfaces; and a pair of external electrodes. The element body includes an inner layer portion in which a plurality of internal electrodes and a plurality of dielectric layers are alternately stacked in a second direction where the pair of main surfaces face each other, and a pair of outer layer portions disposed outside the inner layer portion in the second direction. On at least one of the pair of end surfaces, the internal electrode of the inner layer portion protrudes outward in the first direction from the outer layer portion by a predetermined protrusion amount. A ratio of the protrusion amount to a dimension of the element body in the second direction ranges from 11,000 ppm to 16,000 ppm.
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公开(公告)号：US20240112865A1
公开(公告)日：2024-04-04
申请号：US18464467
申请日：2023-09-11
Applicant: TDK CORPORATION
Inventor： Toshihiro IGUCHI , Daisuke YOSHIDA , Kazunori OSHIMA
Abstract: An electronic device includes an element body. The element body includes a first internal electrode layer, a second internal electrode layer, and a dielectric layer laminated between the first internal electrode layer and the second internal electrode layer. Ni oxide particles exist at a first boundary between the first internal electrode layer and the dielectric layer. The dielectric layer includes a dielectric large particle in contact with both of the Ni oxide particles at the first boundary and the second internal electrode layer.
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公开(公告)号：US20210257160A1
公开(公告)日：2021-08-19
申请号：US17160531
申请日：2021-01-28
Applicant: TDK CORPORATION
Inventor： Daisuke YOSHIDA , Hikaru HIRABAYASHI , Yuki TAKAHASHI , Takuto OKAMOTO , Masato KIMURA
Abstract: A multilayer capacitor 1 includes an element body 3, an external electrode 5, and a plurality of internal electrodes 7 and 9. The plurality of internal electrodes 7 and 9 include electrode portions 7a and 9a disposed to face other internal electrodes and connecting portions 7b and 9b connecting the electrode portions 7a and 9a to the external electrode 5. The connecting portions 7b and 9b of the internal electrodes 7 and 9 are positioned in a region corresponding to an end surface 3e when viewed from a direction perpendicular to the end surface 3e. The electrode portions 7a and 9a of the internal electrodes 7 and 9 have portions overlapping a region corresponding to an edge line surfaces 3g and 3i when viewed from the direction perpendicular to the end surface 3e.
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公开(公告)号：US20240120152A1
公开(公告)日：2024-04-11
申请号：US18464439
申请日：2023-09-11
Applicant: TDK CORPORATION
Inventor： Toshihiro IGUCHI , Daisuke YOSHIDA
Abstract: An electronic device includes an element body. The element body includes at least two internal electrode layers and a dielectric layer laminated between the internal electrode layers. Ni oxide particles exist at a boundary between the internal electrode layers and the dielectric layer. The dielectric layer is in contact with the internal electrode layers at first and second boundaries. The dielectric layer includes a first dielectric large particle and a second dielectric large particle. The first dielectric large particle is in contact with at least one of the Ni oxide particles existing at the first boundary and in contact with one of the internal electrode layers at the second boundary. The second dielectric large particle is in contact with at least one of the internal electrode layers at the first boundary and in contact with at least one of the Ni oxide particles existing at the second boundary.
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公开(公告)号：US20210257161A1
公开(公告)日：2021-08-19
申请号：US17161217
申请日：2021-01-28
Applicant: TDK CORPORATION
Inventor： Daisuke YOSHIDA , Yuki TAKAHASHI , Hikaru HIRABAYASHI , Takuto OKAMOTO , Masato KIMURA
Abstract: A multilayer capacitor includes an element body, an external electrode, and a plurality of internal electrodes, and a relationship of R1
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