Patent ID: 8164002
Filing Date: 2012-04-24
Classification: G11B,H05K

Abstract:
1. A wired circuit board comprising: a metal supporting board; an insulating base layer formed on the metal supporting board; a conductive pattern formed on the insulating base layer; a first semiconductive layer formed on a surface of the insulating base layer exposed from the conductive pattern; an insulating cover layer formed on the conductive pattern and the first semiconductive layer; and a second semiconductive layer formed on a surface of the insulating cover layer, wherein the first semiconductive layer is electrically connected to the conductive pattern and the metal supporting board, the second semiconductive layer is electrically connected to the metal supporting board, the first semiconductive layer is formed to be interposed between the insulating base layer and the insulating cover layer, wherein the conductive pattern comprises a terminal portion exposed by opening the insulating cover layer, and at least one end of the second semiconductive layer is electrically connected to the terminal portion, and at least the other end of the second semiconductive layer is electrically connected to the metal supporting board, wherein the other end of the second semiconductive layer comprises at least one lower end portion having a lower side in a thickness direction which is in contact with and electrically connected to an upper surface of a widthwise end portion of the metal supporting board, and wherein the first semiconductive layer and the second semiconductive layer are in contact with each other.