Patent ID: 7037812

Claim:
A manufacturing method of a circuit substrate, in which an electronic circuit is formed on a surface of a base member by a solution jetting device, the manufacturing method comprising: providing a nozzle for the solution jetting device having a discharge port with an inner diameter of 0.1 μm to 100 μm; supplying a solution into the nozzle of the solution jetting device, wherein the solution includes a plurality of fine particles adapted to form an electronic circuit by melting and sticking to one another, and a dispersant for dispersing the fine particles; jetting liquid drops of the solution from the discharge port of the nozzle toward the surface of the base member by applying a voltage of an arbitrary waveform to the solution so that the solution is electrically charged; and exposing the jetted liquid drops received on the surface of the base member to light or heat to make the fine particles melt and stick to one another.