US 12,170,175 B2
Multi-layer ceramic capacitor
Kotaro Mizuno, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Jul. 25, 2023, as Appl. No. 18/358,786.
Application 18/358,786 is a continuation of application No. 17/589,344, filed on Jan. 31, 2022, granted, now 11,756,737.
Claims priority of application No. 2021-032288 (JP), filed on Mar. 2, 2021.
Prior Publication US 2023/0377805 A1, Nov. 23, 2023
Int. Cl. H01G 4/30 (2006.01); H01G 4/012 (2006.01); H01G 4/12 (2006.01)
CPC H01G 4/30 (2013.01) [H01G 4/012 (2013.01); H01G 4/1227 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A multi-layer ceramic capacitor, comprising:
a multi-layer unit that includes a plurality of ceramic layers laminated in a direction of a first axis and a plurality of internal electrodes disposed between the plurality of ceramic layers, positions of end portions of the plurality of internal electrodes in a direction of a second axis perpendicular to the first axis falling within a range of 0.5 μm in the direction of the second axis; and
a first side margin and a second side margin each containing at least one of manganese or magnesium and silicon and facing each other in the direction of the second axis with the multi-layer unit sandwiched therebetween, wherein
when each of the first side margin and the second side margin is equally divided, in the direction of the second axis, into a first inner region and a first outer region, the first inner region being in contact with the multi-layer unit,
a concentration of silicon in the first inner region is higher than a concentration of silicon in the first outer region and higher than a concentration of silicon in the plurality of ceramic layers,
wherein, the first inner region has a uniform concentration of silicon over its entire area, and the first outer region has a uniform concentration of silicon over its entire area.