Patent ID: 8435440

Claim:
A method for forming a pattern on a board, comprising: a step of providing a base material for forming the board; a step of forming a first groove and a first liquid receiving section communicated with the first groove, on one surface of the base material; a step of applying a processing for lowering a liquid repellent property of the surface of the base material at a portion defining an entire exposed surface of the first groove by irradiating with a laser the portion defining the entire exposed surface of the first groove; a step of arranging a liquid droplet jetting unit above the one surface of the base material and jetting liquid droplets, which are conductive and include a conductive material, from the liquid droplet jetting unit toward the base material; a liquid charging step of charging, via capillary action, the conductive liquid into the first groove communicated with the first liquid receiving section by landing the liquid droplets jetted from the liquid droplet jetting unit on the first liquid receiving section; and a solidifying step of solidifying the conductive liquid charged into the first groove, wherein the first liquid-receiving section has such a size that a circle, which has the same diameter as a diameter of the liquid droplet before landing on the first liquid receiving section, is completely included in the first liquid-receiving section, and the first groove has a width which is less than the diameter of the liquid droplet.