Patent ID: 7971353

Claim:
A production method of a wired circuit board comprising: forming a conductive pattern including a plurality of lines of wire extending along a lengthwise direction of the wired circuit board, and terminal portions to connect with external terminals on an insulating base layer, forming an insulating cover layer on the insulating base layer to cover the conductive pattern and form an opening from which the terminal portions and criterion marks are exposed, so as to provide a mounting position for the external terminal, curing the insulating cover layer, and determining a presence or absence of an inhibitory portion formed due to formation of the insulating cover layer to inhibit connection between the terminal portions and the external terminals, pattern, the criterion marks, which are used to determine a presence or absence of the insulating cover layer that may inhibit connection between the terminal portions and the external terminals, are the opening at a same time as the conductive pattern is formed, the criterion marks being located between the mounting position for the external terminals and an edge of the opening with respect to the lengthwise direction of the lines of wire of the conductive pattern, and wherein the presence or absence of the inhibitory portion is determined with reference to the criterion marks by determining the present or absence of the cured insulating cover layer in a region between the criterion marks and the terminal portions.