Patent ID: 7799701

Claim:
A method of coating by supplying a liquid material from a nozzle tip to form a film on a substrate surface facing to said nozzle, comprising the steps of: preparing a translation mechanism, which is capable of moving said nozzle in an in-plane direction of the substrate and in a thickness direction of the substrate, toward said substrate; making said nozzle to come gradually closer to said substrate, after position determination of said nozzle at a predetermined position on the in-plane of said substrate, by using said translation mechanism; detecting electric current flowing through said nozzle from said substrate surface, when a semiconductor droplet supplied from said nozzle tip contacts with an electrode installed at said substrate surface; stopping accession of said nozzle to the substrate, when value of said electric current becomes over threshold value set in advance; and making the nozzle tip apart from said substrate farther than in said stopping, so as to coat said substrate with the liquid material.