Patent ID: 7371971

Claim:
A wired circuit board comprising: an insulating base layer; a conductive pattern formed on the insulating base layer, the conductive pattern including a plurality of lines of wire extending along a lengthwise direction of the wired circuit board; an insulating cover layer formed on the insulating base layer to cover the conductive pattern; terminal portions coupled to the conductive pattern, the terminal portions being provided to connect with external terminals of an external component; an opening formed in the insulating cover layer to expose the terminal portions and to provide a mounting area for the external component; an inhibitory region defined between an edge of the opening and a corresponding edge of the mounting area for the external component, the inhibitory region including the terminal portions therein and not including the insulating cover layer between the terminal portions; criterion marks provided on the insulating base layer between the edge of the opening and the corresponding edge of the mounting area of the external component to identify boundaries of the inhibitory region, the criterion marks being exposed from the opening and identifying the boundaries for enabling a determination of whether the insulating cover layer extends into the inhibitory region; and wherein the criterion marks are arranged between adjacent lines of wire.