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公开(公告)号：US12068117B2
公开(公告)日：2024-08-20
申请号：US18375681
申请日：2023-10-02
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： A multilayer ceramic capacitor includes a multilayer body including an inner layer portion including dielectric layers and internal electrode layers alternately laminated therein, two outer layer portions respectively provided on both sides of the inner layer portion in a lamination direction, and two side gap portions respectively provided on both side surfaces of the inner layer portion and the outer layer portions, in a width direction intersecting the lamination direction, and external electrodes respectively provided on both end surfaces of the multilayer body in a length direction intersecting the lamination direction and the width direction, and each connected to the internal electrode layers, wherein nickel and magnesium are segregated between the side gap portions and the outer layer portions.
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公开(公告)号：US11862402B2
公开(公告)日：2024-01-02
申请号：US17487346
申请日：2021-09-28
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/2325 , H01G4/008 , H01G4/1227 , H01G4/30
摘要： A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrode layers alternately laminated therein, base electrode layers respectively provided on both end surfaces of the multilayer body in a length direction intersecting a lamination direction, and each connected to the internal electrode layers and each including glass and copper, and plated layers respectively provided on an outer side of the base electrode layers. A protective layer including sulfur is provided between the glass included in the base electrode layers and the plated layers.
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公开(公告)号：US11735369B2
公开(公告)日：2023-08-22
申请号：US17487385
申请日：2021-09-28
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrode layers alternately laminated therein, and external electrode layers respectively provided on both end surfaces of the multilayer body in a length direction intersecting a lamination direction, and each connected to the internal electrode layers, the external electrode layers each further including a base electrode layer including a first region, a second region, and a third region divided therein, in order from the multilayer body. The first region includes a metal included in the internal electrode layers in a higher amount than the second region and the third region, the second region includes glass in a higher amount than the first region and the third region, and the third region includes copper in a higher amount than the first region and the second region.
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公开(公告)号：US12119183B2
公开(公告)日：2024-10-15
申请号：US18524673
申请日：2023-11-30
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/2325 , H01G4/008 , H01G4/1227 , H01G4/30
摘要： A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrode layers alternately laminated therein, base electrode layers respectively provided on both end surfaces of the multilayer body in a length direction intersecting a lamination direction, and each connected to the internal electrode layers and each including glass and copper, and plated layers respectively provided on an outer side of the base electrode layers. A protective layer including sulfur is provided between the glass included in the base electrode layers and the plated layers.
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公开(公告)号：US12009157B2
公开(公告)日：2024-06-11
申请号：US18218300
申请日：2023-07-05
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： In a multilayer ceramic capacitor, a positional deviation in a lamination direction between end portions in a width direction intersecting the lamination direction and a length direction, of two of internal electrode layers adjacent to each other in the lamination direction, is about 5 μm or less. A connection ratio N1/N0 at the middle portion thereof, and a connection ratio N2/N0 at the end portion thereof are about 90% or more, respectively, and a difference between N1/N0 and N2/N0 is about 10% or less.
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公开(公告)号：US11501920B2
公开(公告)日：2022-11-15
申请号：US17203855
申请日：2021-03-17
发明人： Takefumi Takahashi
摘要： A multilayer ceramic electronic component includes a multilayer body, and an external electrode layer including a foundation electrode layer which is a fired layer. The multilayer body includes an inner layer portion including ceramic layers and inner conductive layers, and outer layer portions each including the ceramic layers. The foundation electrode layer includes an inner layer electrode portion adjacent to the inner layer portion and outer layer electrode portions respectively adjacent to the outer layer portions. The outer layer electrode portions respectively include high-content regions and low-content regions in order from an end surface of the multilayer body. The content of metal in the high-content regions is higher than the content of metal in the low-content regions.
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公开(公告)号：US11270845B2
公开(公告)日：2022-03-08
申请号：US16988754
申请日：2020-08-10
发明人： Yuta Saito , Akito Mori , Takefumi Takahashi , Masahiro Wakashima
摘要： A multilayer ceramic capacitor includes a laminate including dielectric layers and internal electrode layers laminated together in a lamination direction, and a pair of external electrodes on both end surfaces of the laminate, the external electrodes being connected to the internal electrode layers, wherein a barrier is provided on a widthwise end of at least one internal electrode layer, the barrier having a thickness that decreases from the widthwise end of the internal electrode layer toward a side margin in a width direction, a void is defined by the widthwise end of the internal electrode layer, the barrier, and the side margin, and the barrier contains Ni and Sn.
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公开(公告)号：US11735366B2
公开(公告)日：2023-08-22
申请号：US17378822
申请日：2021-07-19
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/085 , H01G4/1218
摘要： A multilayer ceramic electronic component includes a multilayer body and an outer electrode on each end surfaces of the multilayer body. The outer electrode includes an underlying electrode layer and a plating layer on the underlying electrode layer. Void portions inside the underlying electrode layer are each filled with a barrier film. The barrier film is formed by an atomic layer deposition method.
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公开(公告)号：US11810725B2
公开(公告)日：2023-11-07
申请号：US17487353
申请日：2021-09-28
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： A multilayer ceramic capacitor includes a multilayer body including an inner layer portion including dielectric layers and internal electrode layers alternately laminated therein, two outer layer portions respectively provided on both sides of the inner layer portion in a lamination direction, and two side gap portions respectively provided on both side surfaces of the inner layer portion and the outer layer portions, in a width direction intersecting the lamination direction, and external electrodes respectively provided on both end surfaces of the multilayer body in a length direction intersecting the lamination direction and the width direction, and each connected to the internal electrode layers, wherein nickel and magnesium are segregated between the side gap portions and the outer layer portions.
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公开(公告)号：US11735368B2
公开(公告)日：2023-08-22
申请号：US17487349
申请日：2021-09-28
发明人： Keita Kitahara , Yuta Saito , Noriyuki Ookawa , Riyousuke Akazawa , Takefumi Takahashi , Masahiro Wakashima , Yuta Kurosu , Akito Mori
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： In a multilayer ceramic capacitor, a positional deviation in a lamination direction between end portions in a width direction intersecting the lamination direction and a length direction, of two of internal electrode layers adjacent to each other in the lamination direction, is about 5 μm or less. A connection ratio N1/N0 at the middle portion thereof, and a connection ratio N2/N0 at the end portion thereof are about 90% or more, respectively, and a difference between N1/N0 and N2/N0 is about 10% or less.
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