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US 12,286,381 B2Granted
Coil component and method for manufacturing coil component
AssigneeMurata Manufacturing Co., Ltd.
InventorsReiji Ozawa, Ayumi Yamamoto
Life of this patent
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Abstract
A coil component includes a porous ceramic portion having pores, a coil portion embedded in the porous ceramic portion, and outer electrodes which are provided on an outer surface of the porous ceramic portion and electrically connected to the coil portion. The porous ceramic portion has a porosity of 10% by volume or more and 90% by volume or less (i.e., from 10% by volume to 90% by volume), and the pores are filled with a cured product of a resin composition containing a cycloaliphatic epoxy resin and an acid anhydride-based curing agent.
Claims3
A method for manufacturing a coil component comprising:
- preparing ceramic green sheets containing a ceramic material and a vanishing material;
- forming interconnection layers on the ceramic green sheets;
- stacking the ceramic green sheets having the interconnection layers formed thereon to produce a green multilayer body;
- firing the green multilayer body and eliminating the vanishing material to produce a multilayer body including a porous ceramic portion having pores;
- and
- filling the pores of the porous ceramic portion with a resin composition containing a cycloaliphatic epoxy resin and an acid anhydride-based curing agent.
3 more elements
Dependencies are inferred from the claim text.