US 12,191,067 B2
Coil component
Kenichi Araki, Nagaokakyo (JP); Keiichi Ishida, Nagaokakyo (JP); and Yutaka Noguchi, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Jul. 21, 2020, as Appl. No. 16/935,133.
Claims priority of application No. 2019-180256 (JP), filed on Sep. 30, 2019.
Prior Publication US 2021/0098181 A1, Apr. 1, 2021
Int. Cl. H01F 27/28 (2006.01); H01F 27/24 (2006.01); H01F 27/255 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01); H01F 41/02 (2006.01); H01F 41/04 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/255 (2013.01); H01F 27/29 (2013.01); H01F 41/0206 (2013.01); H01F 41/043 (2013.01); H01F 2027/2809 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A coil component comprising:
a substantially rectangular parallelepiped first magnetic portion that includes a coil conductor, and the first magnetic portion contains first magnetic particles including a metal magnetic material; and
a second magnetic portion disposed on at least an upper surface of the first magnetic portion, and the second magnetic portion contains second magnetic particles and a resin,
wherein a resin content of the resin in the second magnetic portion is higher than a resin content in the first magnetic portion,
an insulating film is disposed on a lower surface of the first magnetic portion except where an outer electrode is disposed on the lower surface of the first magnetic portion, and
the insulating film contacts both the first magnetic portion and second magnetic portion on a bottom surface of the coil component.