Wired circuit board and producing method thererof

摘要

A wired circuit board includes a metal supporting board having at least one depressed portion, a conductive portion embedded in the at least one depressed portion and formed of a material having a higher conductivity than that of the metal supporting board, an insulating layer formed on the metal supporting board so as to cover the conductive portion, and a plurality of wires formed on the insulating layer in mutually spaced-apart relation so as to oppose to the conductive portion.