US 12,456,581 B2
Multilayer ceramic electronic component
Taku Mizuno, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Feb. 6, 2023, as Appl. No. 18/105,903.
Claims priority of application No. 2022-021443 (JP), filed on Feb. 15, 2022.
Prior Publication US 2023/0260700 A1, Aug. 17, 2023
Int. Cl. H01G 4/012 (2006.01); H01G 4/232 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/012 (2013.01) [H01G 4/30 (2013.01); H01G 4/2325 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer ceramic electronic component comprising:
a multilayer body including a plurality of ceramic layers laminated on each other, a plurality of inner conductor layers laminated on the plurality of ceramic layers, a first main surface and a second main surface opposed to each other in a direction of layer lamination, a first lateral surface and a second lateral surface opposed to each other in a direction of width orthogonal or substantially orthogonal to the direction of layer lamination, and a first end surface and a second end surface opposed to each other in a direction of length orthogonal or substantially orthogonal to the direction of layer lamination and the direction of width;
a first external electrode on the first end surface and connected to the plurality of inner conductor layers; and
a second external electrode on the second end surface and connected to the plurality of inner conductor layers; wherein
the multilayer body includes an inner layer portion including a portion of the plurality of ceramic layers and the plurality of inner conductor layers, and a first outer layer portion on a side of the first main surface and a second outer layer portion on a side of the second main surface with the inner layer portion interposed therebetween, the first outer layer portion and the second outer layer portion respectively including a portion of the plurality of ceramic layers excluding the portion included in the inner layer portion;
the first end surface and the second end surface each include an inner layer end surface including a surface defined by the inner layer portion, a first outer layer end surface including a surface defined by the first outer layer portion, and a second outer layer end surface including a surface defined by the second outer layer portion;
the inner layer end surface includes a protruding end surface including a surface protruding further in the direction of length than the first outer layer end surface and the second outer layer end surface, a first coupling surface connecting the first outer layer end surface and the protruding end surface to each other, and a second coupling surface connecting the second outer layer end surface and the protruding end surface to each other;
an angle between the first outer layer end surface and the first coupling surface at a boundary between the first outer layer end surface and the first coupling surface is an obtuse angle;
an angle between the second outer layer end surface and the second coupling surface at a boundary between the second outer layer end surface and the second coupling surface is an obtuse angle;
the plurality of inner conductor layers are exposed at the first coupling surface and the second coupling surface;
the protruding end surface is a flat or substantially flat surface, and the first outer layer end surface and the second outer layer end surface each include a flat or substantially flat surface;
an angle between the protruding end surface and a first virtual surface resulting from extension of the first coupling surface toward the protruding end surface is greater than an angle between the protruding end surface and the first outer layer end surface; and
an angle between the protruding end surface and a second virtual surface resulting from extension of the second coupling surface toward the protruding end surface is greater than an angle between the protruding end surface and the second outer layer end surface.