Back to results
US 10,650,955 B2Granted
Method for manufacturing an electronic component
AssigneeMurata Manufacturing Co., Ltd.
InventorsHironobu Kubota, Mitsunori Inoue, Tomohiko Mori, Gota Shinohara, Kenji Nishiyama
Life of this patent
Estimating the term…
Abstract
An electronic component includes a main body composed of an insulator, a coating film covering the main body, a circuit element located inside the main body, and outer electrodes. The insulator contains a metal magnetic powder. The coating film is composed of a resin and a cationic element contained in the insulator.
Claims17
A method for manufacturing an electronic component, comprising the steps of:
- preparing a main body including an element assembly composed of a metal magnetic powder and an insulating resin, and an inner conductor located inside the element assembly;
- preparing a resin emulsion containing an etching component for ionizing a metal constituting the metal magnetic powder and a resin component;
- coating the main body with the resin emulsion and performing drying to form a coating film;
- and
- forming outer electrodes connected to the inner conductor,
- wherein the metal contained in the metal magnetic powder has an ionization tendency larger than that of a metal contained in the inner conductor, and
- the coating film comprises a reaction product of a cation of an element constituting the metal magnetic powder and the resin.
4 more elements
Dependencies are inferred from the claim text.