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公开(公告)号：US20230411075A1
公开(公告)日：2023-12-21
申请号：US18237256
申请日：2023-08-23
发明人： Hyoung Uk Kim , Seung In Baik , Hyung Soon Kwon , Ji Hong Jo
IPC分类号： H01G4/12 , H01G4/012 , H01G4/248 , H01G4/30 , C04B35/468
CPC分类号： H01G4/1227 , H01G4/012 , C04B35/4682 , H01G4/30 , H01G4/248
摘要： A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO3-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is greater than 0.2 mol and less than or equal to 1.5 mol based on 100 mol of titanium (Ti) of the base material main ingredient.
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公开(公告)号：US11715596B2
公开(公告)日：2023-08-01
申请号：US17710215
申请日：2022-03-31
发明人： Jae Sung Park , Jeong Ryeol Kim , In Tae Seo , Jong Han Kim , Hyung Soon Kwon , Hee Sun Chun
CPC分类号： H01G4/008 , H01G4/012 , H01G4/1227 , H01G4/30
摘要： A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110≤Tb/RE≤2.333.
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公开(公告)号：US11682525B2
公开(公告)日：2023-06-20
申请号：US17208559
申请日：2021-03-22
发明人： Hyung Soon Kwon , Kyoung Jin Cha , Ji Hong Jo
CPC分类号： H01G4/224 , H01G4/1227 , H01G4/30 , H01G4/232
摘要： A multilayer ceramic capacitor includes: a ceramic body including a dielectric layer, a first internal electrode and a second internal electrode arranged to face each other with the dielectric layer interposed therebetween; and a first external electrode disposed on an exterior surface of the ceramic body and a second external electrode disposed on the exterior surface of the ceramic body, wherein the ceramic body includes an active portion, forming capacity, cover portions disposed on upper and lower portions of the active portion, and margin portions disposed on a side surface of the active portion, and wherein the dielectric layer, the cover portions, and the margin portions of the active portion include magnesium (Mg) having content of more than 0 mole, and less than or equal to 1.0 mole, relative to titanium (Ti) included in the dielectric layer, the cover portions and the margin portions of the active portion.
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公开(公告)号：US11315729B2
公开(公告)日：2022-04-26
申请号：US16887167
申请日：2020-05-29
发明人： Jae Sung Park , Jeong Ryeol Kim , In Tae Seo , Jong Han Kim , Hyung Soon Kwon , Hee Sun Chun
摘要： A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110≤Tb/RE≤2.333.
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公开(公告)号：US10541087B1
公开(公告)日：2020-01-21
申请号：US16139632
申请日：2018-09-24
发明人： Hyung Soon Kwon , Kyoung Jin Cha , Ji Hong Jo
摘要： A multilayer ceramic capacitor includes a ceramic body with first and second internal electrodes facing each other and dielectric layers interposed therebetween. First and second external electrodes are on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively. A dielectric layer includes dielectric grains including, respectively, first regions in which dysprosium (Dy) is not present and second regions surrounding the first regions. Where a shortest distance between boundaries of the first regions (in which dysprosium (Dy) is not present) of two of the dielectric grains is “L,” the concentration of dysprosium (Dy) in a region within ±0.2 L from a halfway point between the boundaries is lower than that of dysprosium (Dy) in the second regions.
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公开(公告)号：US10490351B1
公开(公告)日：2019-11-26
申请号：US16279117
申请日：2019-02-19
发明人： Hyung Soon Kwon , Kyoung Jin Cha , Ji Hong Jo
摘要： A multilayer ceramic capacitor includes a ceramic body with first and second internal electrodes facing each other and dielectric layers interposed therebetween. First and second external electrodes are on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively. A dielectric layer includes dielectric grains including, respectively, first regions in which dysprosium (Dy) is not present and second regions surrounding the first regions. Where a shortest distance between boundaries of the first regions (in which dysprosium (Dy) is not present) of two of the dielectric grains is “L,” the concentration of dysprosium (Dy) in a region within ±0.2L from a halfway point between the boundaries is lower than that of dysprosium (Dy) in the second regions.
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公开(公告)号：US11984267B2
公开(公告)日：2024-05-14
申请号：US17992469
申请日：2022-11-22
发明人： Tae Young Ham , Ji Hong Jo , Seung In Baik , Hyung Soon Kwon
IPC分类号： H01G4/12 , C04B35/468 , H01G4/012 , H01G4/248 , H01G4/30
CPC分类号： H01G4/1227 , C04B35/4682 , H01G4/012 , H01G4/248 , H01G4/30 , C04B2235/3206 , C04B2235/3224 , C04B2235/3236 , C04B2235/3251 , C04B2235/768 , C04B2235/785
摘要： A dielectric composition includes a main ingredient having a perovskite structure represented by ABO3, where A is at least one of Ba, Sr, and Ca and B is at least one of Ti, Zr, and Hf, and a first accessory ingredient. The first accessory ingredient comprises 0.1 mole or more of a rare earth element, 0.02 mole or more of Nb, and 0.25 mole or more and 0.9 mole or less of Mg, a sum of contents of the rare earth element and Nb is 1.5 mole or less.
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公开(公告)号：US11355286B2
公开(公告)日：2022-06-07
申请号：US16298340
申请日：2019-03-11
发明人： Kyoung Jin Cha , Ji Hong Jo , Hyung Soon Kwon , Jong Hoon Kim , Jin Woo Lee
摘要： A method of manufacturing a capacitor component includes preparing a laminate structure in which a plurality of ceramic sheets, each having an internal electrode pattern formed thereon, are layered, attaching an auxiliary member to an upper surface and a lower surface of the laminate structure, and disposing the laminate structure having the auxiliary member attached thereto on a lower mold on which jigs for blocking a length direction portion and a width direction portion of the laminate structure are disposed and compressing the laminate structure. The ceramic sheet has a thickness of 0.6 μm or less, and the auxiliary member has higher elasticity than elasticity of the lower mold.
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公开(公告)号：US11222749B2
公开(公告)日：2022-01-11
申请号：US16803779
申请日：2020-02-27
发明人： Hyoung Uk Kim , Seung In Baik , Hyung Soon Kwon , Ji Hong Jo
IPC分类号： C04B35/468 , H01G4/12 , H01G4/012 , H01G4/248 , H01G4/30
摘要： A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO3-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is greater than 0.2 mol and less than or equal to 1.5 mol based on 100 mol of titanium (Ti) of the base material main ingredient.
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公开(公告)号：US20210343477A1
公开(公告)日：2021-11-04
申请号：US17378108
申请日：2021-07-16
发明人： Min Young Choi , Hyung Soon Kwon , Seung In Baik , Ji Hong Jo
IPC分类号： H01G4/12 , C04B35/468
摘要： A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO3-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is less than or equal to 1.5 mol, based on 100 mol of Ti of the base material main ingredient, and a content of the Dy satisfies 0.7 mol
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