公开(公告)号：US20180294097A1

公开(公告)日：2018-10-11

申请号：US15918372

申请日：2018-03-12

申请人： TAIYO YUDEN CO., LTD.

发明人： RYO ONO ,  TETSUHIKO FUKUOKA ,  SHOJI KUSUMOTO ,  AKIHIKO KONO

IPC分类号： H01G2/20 ,  H01G4/30 ,  H01G4/008

摘要： A multi-layer ceramic capacitor includes a multi-layer unit and a side margin. The multi-layer unit includes ceramic layers laminated in a first direction, internal electrodes disposed between the ceramic layers, a main surface oriented in the first direction, a surface layer portion in a range from the main surface to a predetermined depth, and a center portion adjacent to the surface layer portion in the first direction. The side margin covers the multi-layer unit from a second direction orthogonal to the first direction. The ceramic layers have an average dimension in the first direction that is 0.4 μm or less. Each of the internal electrodes includes an oxidized region adjacent to the side margin. The oxidized region in the surface layer portion has a dimension in the second direction that is equal to or more than two times the average dimension of the ceramic layers in the first direction.

公开(公告)号：US20190221368A1

公开(公告)日：2019-07-18

申请号：US16239206

申请日：2019-01-03

申请人： Taiyo Yuden Co., Ltd.

发明人： RYO ONO ,  TETSUHIKO FUKUOKA ,  SHOJI KUSUMOTO ,  AKIHIKO KONO

IPC分类号： H01G4/224 ,  H01G4/30 ,  H01G4/012

CPC分类号： H01G4/224 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/232 ,  H01G4/248 ,  H01G4/30

摘要： A multi-layer ceramic capacitor includes: a multi-layer unit including a capacitance forming unit including internal electrodes laminated in a first direction, a drawn portion extending from the capacitance forming unit in a second direction, and a cover that covers the capacitance forming unit and the drawn portion in the first direction, the multi-layer unit having a main surface facing in the first direction, an end surface facing in the second direction, and a side surface facing in a third direction; and a side margin provided to the side surface, the side surface including a first straight portion including an outer edge of the main surface and extending in the second direction, a second straight portion including an outer edge of the end surface and extending in the first direction, and a corner portion that connects the first and second straight portions with each other, the corner portion being curved.

公开(公告)号：US20190164693A1

公开(公告)日：2019-05-30

申请号：US16194971

申请日：2018-11-19

申请人： Taiyo Yuden Co., Ltd.

发明人： RYO ONO ,  TETSUHIKO FUKUOKA ,  SHOJI KUSUMOTO ,  AKIHIKO KONO

IPC分类号： H01G4/224 ,  H01G4/30 ,  H01G4/012

摘要： A multi-layer ceramic electronic component includes a ceramic body including a multi-layer unit, a side margin, and ridges. The multi-layer unit includes a capacitance forming unit including ceramic layers laminated in a first direction and internal electrodes disposed between the ceramic layers, a cover that covers the capacitance forming unit in the first direction, and a side surface facing in a second direction orthogonal to the first direction. The side margin covers the side surface. The ridges are rounded and extend in a third direction orthogonal to the first and second directions. The capacitance forming unit includes a first region disposed at a center portion in the first direction, and a second region disposed between the cover and the first region, end portions of the internal electrodes in the second direction in the second region being positioned inward in the second direction relative to those in the first region.