US 12,462,977 B2
Multilayer ceramic electronic component including via conductors not exposed to principal surfaces
Yukie Watanabe, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Mar. 21, 2023, as Appl. No. 18/124,015.
Claims priority of application No. 2022-063100 (JP), filed on Apr. 5, 2022.
Prior Publication US 2023/0317372 A1, Oct. 5, 2023
Int. Cl. H01G 4/005 (2006.01); H01C 1/148 (2006.01); H01C 7/00 (2006.01); H01C 7/18 (2006.01); H01G 4/232 (2006.01); H01G 4/248 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/005 (2013.01) [H01C 1/148 (2013.01); H01C 7/008 (2013.01); H01C 7/18 (2013.01); H01G 4/232 (2013.01); H01G 4/248 (2013.01); H01G 4/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer ceramic electronic component comprising:
a multilayer body including a plurality of ceramic layers that are laminated and a plurality of internal electrode layers laminated on the ceramic layers, the multilayer body including a first principal surface and a second principal surface facing each other in a lamination direction, a first lateral surface and a second lateral surface facing each other in a width direction orthogonal to the lamination direction, and a first end surface and a second end surface facing each other in a length direction orthogonal to the lamination direction and the width direction; and
a plurality of external electrodes connected to the internal electrode layers; wherein
the multilayer body includes:
an inner layer portion including a region from an internal electrode layer closest to the first principal surface among the plurality of internal electrode layers to an internal electrode layer closest to the second principal surface among the plurality of internal electrode layers, the plurality of internal electrode layers facing each other with the ceramic layers interposed therebetween in the lamination direction;
a first principal surface-side outer layer portion including the plurality of ceramic layers between the first principal surface and the internal electrode layer closest to the first principal surface among the plurality of internal electrode layers; and
a second principal surface-side outer layer portion including the plurality of ceramic layers between the second principal surface and the internal electrode layer closest to the second principal surface among the plurality of internal electrode layers;
the internal electrode layers include:
a first internal electrode layer exposed to the first end surface, and a second internal electrode layer exposed to the second end surface;
a first auxiliary electrode layer spaced away from the second internal electrode layer and exposed to the first end surface is on a same plane as the ceramic layer on which the second internal electrode layer is located; and
a second auxiliary electrode layer spaced away from the first internal electrode layer and exposed to the second end surface is on a same plane as the ceramic layer on which the first internal electrode layer is located;
a first via conductor is located at a central portion in the width direction of the first internal electrode layer and the first auxiliary electrode layer so as to be exposed to the first end surface;
a second via conductor is located at a central portion in the width direction of the second internal electrode layer and the second auxiliary electrode layer so as to be exposed to the second end surface; and
the first via conductor is not exposed to the first principal surface and the second principal surface, and the second via conductor is not exposed to the first principal surface and the second principal surface.