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公开(公告)号：US20140211367A1
公开(公告)日：2014-07-31
申请号：US14066465
申请日：2013-10-29
Applicant: Taiyo Yuden Co., Ltd.
Inventor： Koichiro MORITA , Katsuya TANIGUCHI
IPC: H01G4/30
CPC classification number: H01G4/30 , H01G4/12 , H01G4/1209
Abstract: With a multilayer ceramic capacitor whose average grain size of the dielectric grains present at the outermost layer position P1 in the laminate is given by D1, average grain size of the dielectric grains present at the center position P2 in the laminate is given by D2, and average grain size of the dielectric grains present at the 25%-penetrated position P3 which is a position penetrated into the laminate by 25% is given by D3, growth of the dielectric grains occurring as a result of sintering is partially suppressed in such a way that the relationships of average grain sizes D1, D2, and D3 satisfy the conditions of 1.5×D1
Abstract translation: 使用层叠体中存在于最外层位置P1处的电介质晶粒的平均粒径为D1的层叠陶瓷电容器，由层叠体中的中心位置P2存在的电介质晶粒的平均粒径为D2， 存在于穿透层压体25％的位置的25％穿透位置处的电介质晶粒的平均粒径由D3给出，由烧结而产生的电介质晶粒的生长以这种方式被部分地抑制 平均粒径D1，D2和D3的关系满足1.5×D1
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公开(公告)号：US20140085768A1
公开(公告)日：2014-03-27
申请号：US14033189
申请日：2013-09-20
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Kenji SAITO , Koichiro MORITA
IPC: H01G4/30
Abstract: A multilayer ceramic capacitor, whose CR product can be prevented from dropping with certainty even at a thickness of 1.0 μm or less, includes multiple unit capacitors wherein a part constituted by two adjacent internal electrode layers in the laminating direction and one dielectric layer present between the two internal electrode layers is defined as a unit capacitor. The capacitances of the unit capacitors arranged in the laminating direction exhibit a distribution that gradually increases from both ends in the laminating direction toward the inside, while gradually decreasing from the two apexes of increase toward the center in the laminating direction.
Abstract translation: 即使厚度为1.0μm以下，也能够确实地防止CR产物滴落的多层陶瓷电容器包括多个单位电容器，其中在层叠方向上由两个相邻的内部电极层构成的部分和存在于层叠方向之间的一个电介质层 两个内部电极层被定义为单位电容器。 沿着层叠方向配置的单位电容器的电容呈现从层叠方向的两端向内侧逐渐增加的分布，同时从层叠方向的两个顶点向中心逐渐减小。
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公开(公告)号：US20240249883A1
公开(公告)日：2024-07-25
申请号：US18591981
申请日：2024-02-29
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yuji TSUSHIMA , Koichiro MORITA
IPC: H01G4/12 , C04B35/468 , C04B35/626 , H01G4/008 , H01G4/012 , H01G4/30
CPC classification number: H01G4/1227 , C04B35/4682 , C04B35/62675 , H01G4/008 , H01G4/012 , H01G4/30
Abstract: A dielectric body includes a plurality of crystal grains of which a main component is barium titanate, and an additive including Zr, Eu and Mn. At least one of the plurality of crystal grains has a core-shell structure having a core and a shell. A Zr/Ti atomic concentration ratio is 0.02 or more and 0.10 or less. An Eu/Ti atomic concentration ratio is 0.001 or more and 0.03 or less. A Mn/Ti atomic concentration ratio is 0.005 or more and 0.05 or less.
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24.发明公开公开(公告)号：US20240212938A1
公开(公告)日：2024-06-27
申请号：US18542177
申请日：2023-12-15
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yasuhiro MATSUMOTO , Koichiro MORITA
CPC classification number: H01G4/2325 , H01G4/0085 , H01G4/1209 , H01G4/30
Abstract: A multilayer ceramic electronic component includes a main body including a laminated portion in which a plurality of dielectric layers and a plurality of internal electrode layers are laminated; and a pair of external electrodes provided on surfaces of the main body, wherein in a capacitor section where the internal electrode layers electrically connected to one of the pair of external electrodes and the internal electrode layers electrically connected to another of the pair of external electrodes face each other, an average diameter d of dielectric particles in the dielectric layers in a center portion is smaller than an average diameter D of the dielectric particles in the dielectric layers in at least a part of an outer peripheral portion outside the center portion.
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公开(公告)号：US20230298819A1
公开(公告)日：2023-09-21
申请号：US18172125
申请日：2023-02-21
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yuji TSUSHIMA , Yasuhiro MATSUMOTO , Koichiro MORITA
CPC classification number: H01G4/1227 , H01G4/30
Abstract: A multilayer ceramic electronic device includes a plurality of internal electrode layers, a plurality of dielectric layers, each of which has a perovskite structure that is expressed by a general formula of ABO3, a pair of cover layers respectively provided on an upper end and a lower end in a stacking direction in a capacity section, and has a main component that is a same as a main component of the plurality of dielectric layers. The capacity section has a first section positioned in a center portion in the stacking direction and a pair of second sections outside of the first section in the stacking direction. An A/B ratio of the first section is larger than the A/B ratio of the second section. The A/B ratio of the pair of cover layers is larger than the A/B ratio of the first section.
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Patent Agency Ranking
公开(公告)号：US20230290577A1
公开(公告)日：2023-09-14
申请号：US18114539
申请日：2023-02-27
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yuji TSUSHIMA , Yasuhiro MATSUMOTO , Koichiro MORITA
Abstract: A multilayer ceramic device includes a multilayer chip. The multilayer chip has a capacity section, a side margin and an intermediate portion. The intermediate portion is provided between the capacity section and the side margin. An A/B ratio is larger in the side margin than in the capacity section, and is smaller in the intermediate portion than in the capacity section.
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27.发明公开公开(公告)号：US20230274885A1
公开(公告)日：2023-08-31
申请号：US18162588
申请日：2023-01-31
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Kana TAMURA , Koichiro MORITA
IPC: H01G4/12 , H01G4/30 , H01G4/012 , C04B35/468 , H01G4/008
CPC classification number: H01G4/1227 , H01G4/30 , H01G4/012 , C04B35/4682 , H01G4/008
Abstract: A dielectric material includes a base material containing barium zirconate titanate as a main component, containing zirconium in an amount of 4 at % or more and 30 at % or less with respect to titanium and zirconium, and having an atomic concentration ratio of barium to titanium and zirconium of 1 or more and 1. 1 or less, and a subcomponent containing 2 at % or more and 4 at % or less of europium with respect to titanium of the barium zirconate titanate.
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公开(公告)号：US20220336154A1
公开(公告)日：2022-10-20
申请号：US17855074
申请日：2022-06-30
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Koichiro MORITA
IPC: H01G4/30 , H01G4/12 , C04B35/468 , H01G4/012
Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which each of dielectric layers and each of internal electrode layers are stacked, wherein a relationship of 8.0≥IA/IB>1.40 is satisfied in a TSDC (Thermally Stimulated Depolarization Currents) of temperature elevation rate of 10 degrees C./min under a condition of 130 degrees C., 5 V/μm and a polarization of 30 min, when a peak current value on a lower temperature side in a temperature range of 130 degrees C. to 190 degrees C. is IA and a peak current value on a higher temperature side in a temperature range of 190 degrees C. to 280 degrees C. is IB.
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公开(公告)号：US20220310323A1
公开(公告)日：2022-09-29
申请号：US17590059
申请日：2022-02-01
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Koichiro MORITA
Abstract: A ceramic electronic device includes a plurality of dielectric layers of which a main component is a ceramic having a perovskite structure, and a plurality of internal electrode layers, each of which is stacked through each of the plurality of dielectric layers and includes a co-material which is inactive against the main component of the plurality of dielectric layers.
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公开(公告)号：US20190259537A1
公开(公告)日：2019-08-22
申请号：US16274065
申请日：2019-02-12
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hideya TERAOKA , Koichiro MORITA
IPC: H01G4/12
Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which dielectric layers and internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the multilayer structure; and a first cover layer and a second cover layer that sandwich the multilayer structure, a main component of the first cover layer and the second cover layer being the same as that of the dielectric layers, wherein the first cover layer is thicker than the second cover layer, wherein a concentration of Mn of at least a part of the first cover layer is higher than a concentration of Mn of the dielectric layers in an effective capacity region in which a set of internal electrode layers exposed to a first edge face of the multilayer structure face with another set of internal electrode layers exposed to a second edge face of the multilayer structure.
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