Patent ID: 8247700
Filing Date: 2012-08-21
Classification: G11B,H05K,Y10T

Abstract:
1. A wired circuit board for mounting a magnetic head, comprising: a metal supporting board; an insulating layer formed on the metal supporting board; one wire formed on the insulating layer and electrically connected to the magnetic head; another wire formed on the insulating layer, arranged in spaced-apart relation with the one wire and electrically connected to the magnetic head; one semiconductive layer formed so as to cover the one wire and electrically connected to the metal supporting board; another semiconductive layer formed so as to cover the other wire and electrically connected to the metal supporting board, wherein the one semiconductive layer and the other semiconductive layer are spaced apart therebetween, the wired circuit board further comprising an insulating cover layer as an external protective cover layer formed on the one semiconductive layer and the other semiconductive layer, a pair of wires of the one wire arranged in an opposing relation and having different potentials; a pair of wires of the other wire arranged in an opposing relation and having different potentials; the one semiconductive layer is electrically connected to the metal supporting board on one outer widthwise side adjacent to one widthwise side edge of the wired circuit board and outside a region where the pair of wires of the one wire are opposed; and the other semiconductive layer is electrically connected to the metal supporting board on an opposite outer widthwise side adjacent to an opposite widthwise side edge of the wired circuit board and outside a region where the pair of wires of the other wire are opposed.