ELECTRONIC EQUIPMENT WITH ELECTROMAGNETIC SHIELDING FUNCTION

摘要

PURPOSE:To cut off electromagnetic wave of high frequency penetrating an electronic circuit and electromagnetic wave which is not cut off completely by improvements on a metallic member and an electronic circuit by providing an electromagnetic shielding layer to a surface of a protection resin layer. CONSTITUTION:A housing 2 which becomes a side wall and an electronic circuit 3 are installed on a thick metallic substrate 1, and a cover 5 exists in a housing opened part. An electronic circuit is covered with circuit protection resin 4 and an electromagnetic shielding layer 6 by ferrite powder exists in a surface. Electric wave penetrating a circuit or electromagnetic noise affecting a peripheral equipment emitted by a built-in circuit can be reduced by reflection/ absorption function of electric wave of the electromagnetic shielding layer.