Electronic apparatus case having an electro-magnetic wave shielding structure

摘要

As for an electric apparatus having a case formed of electro-magnetic wave passing-through material, in order to provide an electro-magnetic wave shielding structure being capable to effectively prevent the leakage therefrom of an electro-magnetic wave generated therein, an electro-magnetic wave reflecting layer, namely, a conductive layer is formed on an inner face of the case and further, on a surface of the conductive layer, a magnetically losing layer containing Mn-Mg-Zn group soft ferrite particles having 1 to 20 mu m average diameter by 70 to 90 weight % at a thickness exceeding 80 mu m is formed, so as to repeatedly absorb the inner generated undesired electro-magnetic wave therein through repeated reflection between the conductive layer and the absorbing layer.