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公开(公告)号：US12278058B2
公开(公告)日：2025-04-15
申请号：US18625318
申请日：2024-04-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yukie Watanabe
Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric ceramic layers and internal electrode layers laminated alternately in a lamination direction, and a pair of external electrodes on both end portions in the length direction of the multilayer body and respectively connected to the internal electrode layers. The pair of external electrodes each include a base region covering at least each of the first and second end surfaces and connected to the internal electrode layers, and a cover region on the base region to cover the base region. The cover region includes maximum thickness portions each including a maximum thickness in the cover region, in a region corresponding to the ranges of about ±10 μm in the lamination direction centered around internal electrode layers at both outermost ends in the lamination direction among the internal electrode layers.
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Patent Agency Ranking
公开(公告)号：US12040138B2
公开(公告)日：2024-07-16
申请号：US17849759
申请日：2022-06-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuhisa Uchida , Yukie Watanabe
CPC classification number: H01G4/232 , H01G4/2325 , H01G4/30
Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric ceramic layers and internal electrode layers laminated alternately in a lamination direction, and a pair of external electrodes on both end portions in the length direction of the multilayer body and respectively connected to the internal electrode layers. The pair of external electrodes each include a base region covering at least each of the first and second end surfaces, connected to the internal electrode layers, and including Cu as a main component, a cover region on the base region to cover the base region, and including Ag as a main component, and a reaction region between the base region and the cover region including Cu included in the base region and Ag included in the cover region reacting with each other.
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公开(公告)号：US11972905B2
公开(公告)日：2024-04-30
申请号：US17849762
申请日：2022-06-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yukie Watanabe
Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric ceramic layers and internal electrode layers laminated alternately in a lamination direction, and a pair of external electrodes on both end portions in the length direction of the multilayer body and respectively connected to the internal electrode layers. The pair of external electrodes each include a base region covering at least each of the first and second end surfaces and connected to the internal electrode layers, and a cover region on the base region to cover the base region. The cover region includes maximum thickness portions each including a maximum thickness in the cover region, in a region corresponding to the ranges of about ±10 μm in the lamination direction centered around internal electrode layers at both outermost ends in the lamination direction among the internal electrode layers.
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公开(公告)号：US11881356B2
公开(公告)日：2024-01-23
申请号：US18121040
申请日：2023-03-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinobu Chikuma , Nobuyuki Koizumi , Akio Masunari , Yukie Watanabe
CPC classification number: H01G4/2325 , H01G4/1209 , H01G4/248 , H01G4/30
Abstract: A multilayer ceramic electronic component includes a multilayer body including layered ceramic layers and layered inner electrode layers and having a rectangular parallelepiped shape, and outer electrodes covering both end surfaces of the multilayer body and extending from both end surfaces to cover at least a portion of a first main surface of the multilayer body. The multilayer ceramic capacitor includes an insulating layer continuously extending from a ceramic layer at the first main surface of the multilayer body so as to cover end edge portions of both the outer electrodes located on the first main surface of the multilayer body, and t2>t1 is satisfied.
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公开(公告)号：US11610737B2
公开(公告)日：2023-03-21
申请号：US17169707
申请日：2021-02-08
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinobu Chikuma , Nobuyuki Koizumi , Akio Masunari , Yukie Watanabe
Abstract: A multilayer ceramic electronic component includes a multilayer body including layered ceramic layers and layered inner electrode layers and having a rectangular parallelepiped shape, and outer electrodes covering both end surfaces of the multilayer body and extending from both end surfaces to cover at least a portion of a first main surface of the multilayer body. The multilayer ceramic capacitor includes an insulating layer continuously extending from a ceramic layer at the first main surface of the multilayer body so as to cover end edge portions of both the outer electrodes located on the first main surface of the multilayer body, and t2>t1 is satisfied.
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公开(公告)号：US11367574B2
公开(公告)日：2022-06-21
申请号：US16805889
申请日：2020-03-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Akio Masunari , Yukie Watanabe
Abstract: A multilayer ceramic capacitor includes a ceramic body including a stack of dielectric layers and internal electrodes and including main surfaces facing each other in a stacking direction, lateral surfaces facing each other in a width direction, and end surfaces facing each other in a length direction, and an external electrode electrically connected with the internal electrodes on the end surfaces. The external electrode includes an end surface covering portion covering each of the end surfaces, and a main surface covering portion covering portions of the main surfaces. The end surface and main surface covering portions each include a base electrode layer covering the ceramic body, and a plating layer covering the base electrode layer. The end surface covering portion further includes, between the base electrode layer and the plating layer, a sintered metal layer including a component different from that of the base electrode layer.
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