Multi-layer ceramic electronic component
A multi-layer ceramic electronic component includes: a ceramic body having a first surface and a second surface opposing each other in a first direction, a third surface and a fourth surface opposing each other in a second direction perpendicular to the first direction, and a fifth surface and a sixth surface opposing each other in a third direction perpendicular to the first direction and the second direction, and including a plurality of dielectric layers, and a first internal electrode and a second internal electrode alternately disposed in the third direction while having the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode and including a first conductive layer including a first groove in a surface and a first plating layer disposed on the first conductive layer; a first coating portion disposed in the first groove and in contact with the first plating layer.
1 . A multi-layer ceramic electronic component comprising:
a ceramic body having a first surface and a second surface opposing each other in a first direction, a third surface and a fourth surface opposing each other in a second direction perpendicular to the first direction, and a fifth surface and a sixth surface opposing each other in a third direction perpendicular to the first direction and the second direction, the ceramic body including a plurality of dielectric layers, and a first internal electrode and a second internal electrode alternately disposed in the third direction with a dielectric layer among the plurality of dielectric layers interposed therebetween;
a first external electrode connected to the first internal electrode, the first external electrode including;
a first conductive layer including a first groove in a surface of the first conductive layer, and
a first plating layer disposed on the first conductive layer;
a first coating portion in contact with the first plating layer, the first coating portion including a plurality of rows of first coating portions, each row among the plurality of rows of first coating portions including a plurality of first coating portions, and a coating portion among the plurality of first coating portions being disposed in the first groove;
a second external electrode connected to the second internal electrode, the second external electrode including:
a second conductive layer including a second groove in a surface of the second conductive layer, and
a second plating layer disposed on the second conductive layer; and
a second coating portion disposed in the second groove and in contact with the second plating layer.
2 . The component of claim 1 , wherein
the first groove comprises a plurality of first grooves,
the second groove comprises a plurality of second grooves, and
the second coating portion comprises a plurality of second coating portions.
3 . The component of claim 2 , wherein
the first conductive layer includes
a first connection portion disposed on the first surface of the ceramic body and connected to a portion of the first internal electrode extending from the first surface, and
a first band portion extending from the first connection portion to the fifth surface and the sixth surface of the ceramic body, and
the second conductive layer includes
a second connection portion disposed on the second surface of the ceramic body and connected to a portion of the second internal electrode extending from the second surface, and
a second band portion extending from the second connection portion to the fifth surface and the sixth surface of the ceramic body.
4 . The component of claim 3 , wherein
the plurality of the first coating portions include a plurality of first connection coating portions disposed on the first connection portion and a plurality of first band coating portions disposed on the first band portion, and
the plurality of the second coating portions include a plurality of second connection coating portions disposed on the second connection portion and a plurality of second band coating portions disposed on the second band portion.
5 . The component of claim 4 , wherein
a thickness of each connection coating portion among the plurality of first connection coating portions and the plurality of second connection coating portions in the first direction is in a range of 100 nm to 300 nm.
6 . The component of claim 4 , wherein
a thickness of each band coating portion among the plurality of first band coating portions and the plurality of second band coating portions in the third direction is in a range of 100 nm to 300 nm.
7 . The component of claim 4 , wherein
a width of each connection coating portion among the plurality of first connection coating portions and the plurality of second connection coating portions in the third direction is in a range of 1.8 μm to 2.2 μm.
8 . The component of claim 4 , wherein
a width of each band coating portion among the plurality of first band coating portions and the plurality of second band coating portions in the first direction is in a range of 1.8 μm to 2.2 μm.
9 . The component of claim 2 , wherein
adjacent coating portions among the plurality of the first coating portions or the plurality of the second coating portions are arranged with a distance therebetween.
10 . The component of claim 9 , wherein
the adjacent coating portions among the plurality of the first coating portions or the plurality of the second coating portions are arranged with a distance of 2 μm therebetween.
11 . The component of claim 2 , further comprising
a third coating portion extending from one end of the first conductive layer to one end of the second conductive layer to cover the third surface, fourth surface, fifth surface, and sixth surface of the ceramic body.
12 . The component of claim 11 , wherein
each coating portion among the plurality of the first coating portions, the plurality of the second coating portions, and the third coating portion includes at least one selected from the group consisting of silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), zirconium oxide (ZrO), zinc oxide (ZnO), and barium oxide (BaO).
13 . The component of claim 11 , wherein
the first plating layer is disposed on the first conductive layer and the plurality of the first coating portions, and in contact with a first corner region of the third coating portion, and
the second plating layer is disposed on the second conductive layer and the plurality of the second coating portions, and in contact with a second corner region of the third coating portion.
14 . The component of claim 13 , wherein each of the first plating layer and the second plating layer includes
an inner plating layer including nickel (Ni), and
an outer plating layer disposed on the inner plating layer and including tin (Sn).
15 . The component of claim 2 , wherein
adjacent coating portions among the plurality of the first coating portions or the plurality of the second coating portions are spaced apart from each other.
16 . The component of claim 5 , wherein at least one connection coating portion among the plurality of first connection coating portions and the plurality of second connection coating portions includes silicon dioxide (SiO 2 ).
17 . The component of claim 16 , wherein
a width of each connection coating portion among the plurality of first connection coating portions and the plurality of second connection coating portions in the third direction is in a range of 1.8 μm to 2.2 μm.
18 . The component of claim 17 , wherein at least one band coating portion among the plurality of first band coating portions and the plurality of second band coating portions includes silicon dioxide (SiO 2 ).
19 . The component of claim 18 , wherein adjacent connection coating portions among the plurality of first connection coating portions or the plurality of second connection coating portions are arranged with a distance of 2 μm therebetween.
20 . The component of claim 4 , further comprising
a third coating portion extending from one end of the first conductive layer to one end of the second conductive layer to cover the third surface, fourth surface, fifth surface, and sixth surface of the ceramic body, wherein
the plurality of first band coating portions are spaced apart from the third coating portion,
the first conductive layer is the innermost layer of the first external electrode,
each coating portion among the plurality of the first coating portions includes at least one selected from the group consisting of zinc oxide (ZnO) and barium oxide (BaO),
each coating portion among the plurality of first connection coating portions is disposed in each groove among the plurality of first grooves in a one-to-one correspondence,
each coating portion among the plurality of first coating portions is circular or polygonal, and
a thickness of each connection coating portion among the plurality of first connection coating portions in the third direction is in a range of 200 nm to 300 nm.