US 12,217,893 B2
Laminated coil component
Yuudai Suzuki, Nagaokakyo (JP); Katsuhisa Imada, Nagaokakyo (JP); Makoto Hiraki, Nagaokakyo (JP); Ikuno Sugiyama, Nagaokakyo (JP); and Hiroshi Ueki, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Dec. 10, 2021, as Appl. No. 17/548,405.
Claims priority of application No. 2020-208649 (JP), filed on Dec. 16, 2020.
Prior Publication US 2022/0189674 A1, Jun. 16, 2022
Int. Cl. H01F 17/00 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01)
CPC H01F 17/0013 (2013.01) [H01F 27/292 (2013.01); H01F 27/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laminated coil component comprising:
a multilayer body in which a coil is disposed inside of an insulator portion, the insulator portion including a plurality of insulation layers laminated together; and
an outer electrode on an outer surface of the multilayer body and electrically connected with the coil, wherein
the coil is configured such that a plurality of coil conductors, which are laminated with the plurality of insulation layers, are electrically connected with each other with a via conductor interposed therebetween,
each of the plurality of coil conductors has a first main surface facing an opposite direction to a lamination direction and a second main surface facing the lamination direction,
the plurality of coil conductors include a first coil conductor and a second coil conductor, the first coil conductor and the second coil conductor being adjacent to each other in the lamination direction,
the first coil conductor and the second coil conductor are electrically connected with each other in series with a first via conductor interposed therebetween,
the first coil conductor, the first via conductor, and the second coil conductor are disposed in this order in the lamination direction,
the first coil conductor has a first main surface on which a void exists interposed between the first main surface of the first coil conductor and the insulator portion,
the second coil conductor has a first main surface on which a void exists interposed between the first main surface of the second coil conductor and the insulator portion and a second main surface on which an other void exists interposed between the second main surface of the second coil conductor and the insulator portion, and
the other void interposed between the second main surface of the second coil conductor and the insulator portion locally exists on a position opposed to the first via conductor.