COIL COMPONENT AND METHOD OF MANUFACTURING SAME

WIPO Patent Application WO/2019/235510

A1

[Problem] To reduce stress applied to an interface part between an electrically conductive material and a resin material in a stacked coil component in which a spiral conductor pattern and an insulating resin layer are alternately stacked. [Solution] A coil component provided with spiral conductor patterns S1, S2 and insulating resin layers 51, 52 covering the same, wherein an outermost circumferential turn 13 of the spiral conductor pattern S1 has an increased-width portion 13a, so that an outer wall surface portion constituting an outer wall surface in a radial direction of the outermost circumferential turn 13 and an outer wall surface portion constituting an outer wall surface in the radial direction of an outermost circumferential turn of the spiral conductor pattern S2 have mutually different radial positions. According to the present invention, the overlap of the insulating resin layer 51 and the insulating resin layer 52 in the stacking direction is reduced, whereby thermal expansion or contraction of the insulating resin layers 51, 52 in the stacking direction in the overlap part is suppressed. Thus, it is possible to reduce stress applied to the interface part between the spiral conductor pattern and the insulating resin layer.

JP6428204	Coil parts and their manufacturing methods
JP6841370	Coil parts
JP5423586	Ceramic electronic components

TAKAHASHI NOBUYA (JP)
FUJII NAOAKI (JP)
NISHIKAWA TOMONAGA (JP)

PCT/JP2019/022284

December 12, 2019

June 05, 2019

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TDK CORP (JP)

H01F17/00; H01F27/28; H01F41/04

JP2004095860A	2004-03-25
JPS57111008A	1982-07-10
JPS60187004A	1985-09-24
US20150364241A1	2015-12-17

WASHIZU Mitsuhiro et al. (JP)

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