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公开(公告)号：US11011291B2
公开(公告)日：2021-05-18
申请号：US15711366
申请日：2017-09-21
摘要： A laminated electronic component having a coil formed in a laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via a conductor extending in a lamination direction of the laminated body. An insulator part is disposed between the conductor and the coil.
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公开(公告)号：US11742141B2
公开(公告)日：2023-08-29
申请号：US17213121
申请日：2021-03-25
发明人： Takuya Ishida , Makoto Yamamoto , Katsutoshi Uji , Yuya Ishida , Mitsuru Odahara
CPC分类号： H01F41/0246 , B22F1/142 , B22F1/16 , H01F1/14766 , B22F1/145 , B22F2301/35 , B22F2302/25 , Y10T428/12181 , B22F2999/00 , B22F1/16 , B22F2207/07 , C22C33/0257 , C22C2202/02 , B22F2998/10 , B22F1/10 , B22F1/16 , B22F1/145 , B22F3/02 , B22F3/10
摘要： A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from a side of the alloy particle. All of the first oxide layer, the second oxide layer, and the third oxide layer contain Si. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer having Fe content smaller than Si content in the alloy particle, the second oxide layer is a layer having Fe content larger than the Si content in the alloy particle, and the third oxide layer is a layer having Fe content smaller than the Si content in the alloy particle.
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公开(公告)号：US11705269B2
公开(公告)日：2023-07-18
申请号：US16830190
申请日：2020-03-25
发明人： Makoto Yamamoto
IPC分类号： H01F27/28 , H01F27/255 , H01F41/04 , H01F41/02 , H01F27/29
CPC分类号： H01F27/2804 , H01F27/255 , H01F27/29 , H01F41/0206 , H01F41/041 , H01F2027/2809
摘要： A coil component in which occurrence of plating elongation is further suppressed and an inductance value is higher. A coil component includes an element body including metal magnetic particles, a coil conductor inside the element body, and a plurality of external electrodes on a surface of the element body. The element body has a substantially rectangular parallelepiped shape including upper and lower surfaces substantially orthogonal to a winding axis of the coil conductor, first and second side surfaces facing each other, and third and fourth side surfaces facing each other. An average particle diameter of each of metal magnetic particles constituting the upper surface, metal magnetic particles constituting the lower surface, metal magnetic particles constituting the first side surface, and metal magnetic particles constituting the second side surface is smaller than an average particle diameter of metal magnetic particles existing inside a winding portion of the coil conductor.
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公开(公告)号：US12020847B2
公开(公告)日：2024-06-25
申请号：US17131573
申请日：2020-12-22
发明人： Shun Takai , Makoto Yamamoto
CPC分类号： H01F27/292 , H01F17/0013 , H01F27/324 , H01F41/041
摘要： A multilayer coil component includes an insulator portion, a coil embedded in the insulator portion and including a plurality of coil conductor layers electrically connected together, and an outer electrode disposed on a surface of the insulator portion and electrically connected to the coil. The coil conductor layers have a thickness of 30 μm to 60 μm. The coil conductor layers are rectangular and include a corner portion with a radius of curvature of 0.08 mm to 0.24 mm.
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公开(公告)号：US11551844B2
公开(公告)日：2023-01-10
申请号：US15875358
申请日：2018-01-19
发明人： Makoto Yamamoto
摘要： A layered electronic component includes a multilayer body having a metallic magnetic material layer including metallic magnetic material particles and a coil being built in the multilayer body. The coil is formed of multiple conductor patterns spirally connected each other and stacked along an axis direction of the coil, and the multilayer body includes a nonmagnetic ferrite part arranged at least an inner area of the coil when viewed from a winding axis direction of the coil.
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公开(公告)号：US10707016B2
公开(公告)日：2020-07-07
申请号：US15711341
申请日：2017-09-21
IPC分类号： H01F41/00 , H01F17/00 , H01F27/00 , H01F1/00 , H01G4/00 , H05K3/00 , H01F41/04 , H01F17/04 , H01F27/29 , H01F1/33 , H01G4/40 , H01G4/232 , H01G4/30 , H01G4/248 , H05K3/46 , H01G4/12
摘要： A method of manufacturing a laminated electronic component having a circuit element formed in an element body. The method includes forming a collective laminated body including a plurality of element bodies having circuit elements formed therein by laminating pluralities of insulator layers and conductor patterns; forming a plurality of external terminals on one of surfaces of the collective laminated body orthogonal to a lamination direction; forming a disappearing layer covering the external terminals and caused to disappear by heat treatment; cutting and dividing the collective laminated body having the disappearing layer formed thereon along the lamination direction into each of element bodies; applying an insulator precursor to a surface of the element body; and forming a laminated electronic component by applying a heat treatment to the element body to which the insulator precursor is applied. In the method, the insulator layers can be replaced by magnetic material layers.
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公开(公告)号：US11887764B2
公开(公告)日：2024-01-30
申请号：US17178160
申请日：2021-02-17
CPC分类号： H01F17/0013 , H01F17/04 , H01F27/29 , H01L23/5227 , H01F17/0033 , H01F2017/004 , H05K3/4629
摘要： A laminated electronic component having a coil formed in the laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via an electrode disposed on a side surface of the laminated body. The electrode is covered with an insulator film.
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公开(公告)号：US10937583B2
公开(公告)日：2021-03-02
申请号：US15711388
申请日：2017-09-21
摘要： A laminated electronic component having a coil formed in the laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via an electrode disposed on a side surface of the laminated body. The electrode is covered with an insulator film.
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公开(公告)号：US11965229B2
公开(公告)日：2024-04-23
申请号：US17201871
申请日：2021-03-15
发明人： Takuya Ishida , Makoto Yamamoto , Katsutoshi Uji , Yuya Ishida , Mitsuru Odahara
IPC分类号： H01F1/147 , B22F1/145 , B22F1/16 , B22F3/02 , C22C38/02 , H01F1/20 , H01F1/24 , H01F1/33 , B22F1/107 , H01F27/255
CPC分类号： C22C38/02 , B22F1/145 , B22F1/16 , B22F3/02 , H01F1/14766 , H01F1/24 , B22F1/107 , B22F2301/35 , B22F2302/256 , C22C2202/02 , H01F27/255 , Y10T428/12181 , B22F2998/10 , B22F1/148 , B22F3/02 , B22F3/1021
摘要： A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, a third oxide layer, and a fourth oxide layer. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer where Fe content takes a local maximum value, the second oxide layer is a layer where Fe content takes a local maximum value, the third oxide layer is a layer where Si content takes a local maximum value, and the fourth oxide layer is a layer where Fe content takes a local maximum value.
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公开(公告)号：US11964325B2
公开(公告)日：2024-04-23
申请号：US15701808
申请日：2017-09-12
发明人： Makoto Yamamoto
IPC分类号： H01F1/147 , B22F1/00 , B22F1/142 , B22F3/24 , C22C33/02 , C22C38/02 , H01F1/24 , H01F17/00 , H01F17/04 , H01F27/255 , H01F27/29
CPC分类号： B22F3/24 , B22F1/00 , B22F1/142 , C22C33/02 , C22C38/02 , H01F1/14766 , H01F1/24 , H01F17/0013 , H01F17/04 , H01F27/255 , B22F2003/248 , B22F2998/10 , C22C2202/02 , H01F27/292 , B22F2998/10 , B22F1/10 , B22F2003/248
摘要： Zinc is added to a metal magnetic alloy powder including iron and silicon. An element is formed using this magnetic material, and a coil is formed inside or on the surface of the element.
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