Patent ID: 8017309

Claim:
A method of manufacturing a wiring circuit board, comprising: preparing an insulating layer; forming conductive thin films on the upper surface and the side end surface of the insulating layer; covering the conductive thin films formed on the upper surface and the side end surface of the insulating layer with photoresists; arranging a photomask so that an end portion and a portion to be provided with a conductive layer in the conductive thin film formed on the upper surface of the insulating layer are shaded and exposing the photoresist covering the conductive thin film formed on the upper surface of the insulating layer from above through the photomask; exposing the photoresist covering the conductive thin film formed on the side end surface of the insulating layer from below; forming plating resists by removing unexposed portions of the photoresists so as to form exposed portions into patterns; forming an end portion conductive layer on the end portion of the conductive thin film formed on the upper surface of the insulating layer, and forming the conductive layer on the conductive thin film formed on the upper surface of the insulating thin film at the same time, on the conductive thin films exposed from the plating resists,; removing the plating resists; and removing the conductive thin films having been covered with the plating resists.