Patent ID: 7775177

Claim:
A circuit pattern forming device comprising: liquid ejection means for ejecting an insulating pattern forming solution and a conductive pattern forming solution onto a substrate to form insulating dots of the insulating solution and conductive dots of the conductive solution on the substrate; control means for controlling an ejection operation which the liquid ejection means performs for each of the solutions; and moving means for moving the liquid ejection means and the substrate relative to each other to form a circuit pattern composed of a plurality of the conductive dots and the insulating dots, wherein the liquid ejection means comprises a first nozzle array in which a plurality of nozzles for ejecting the insulating solution are arranged along a crossing direction crossing a main scan direction, and a second nozzle array in which a plurality of nozzles for ejecting the conductive solution are arranged along the crossing direction, the first nozzle array being disposed in front of the second nozzle array with respect to the main scan direction and the second nozzle array being arranged between a plurality of the first nozzle arrays, and wherein the control means performs control such that when the insulating dots and the conductive dots are formed close to each other on the substrate, the insulating dots which are positioned in a direction in which the liquid ejection means moves relative to the substrate, are formed on the substrate prior to the conductive dots in a same main scan performed by the liquid ejection means.