Patent ID: 7022190
Filing Date: 2006-04-04
Classification: B05C,B05D,H01L

Abstract:
1. A coating unit for coating a substrate with a coating solution, comprising: a coating solution discharge device configured to discharge the coating solution onto the substrate and having a length longer than a radius of the substrate, the coating solution discharge device having at least one coating solution discharge port positioned to supply the coating solution to a center portion of the substrate and a plurality of solvent mist discharge ports positioned to supply a solvent mist of the coating solution to peripheral portions of the substrate; a storage section configured to store the coating solution and connected to the coating solution discharge port; a discharge pressure adjusting chamber having a pressure and configured to discharge the coating solution onto the substrate at a predetermined pressure; a gas supply passage through which a gas containing the solvent mist is supplied to the plurality of solvent mist discharge ports, wherein the gas supply passage is connected to the discharge pressure adjusting chamber, and a diffuser panel is disposed in the gas supply passage so that the gas containing the solvent mist is uniformly discharged from the plurality of solvent mist discharge ports; and a pressure adjusting unit configured to adjust the pressure of the discharge pressure adjusting chamber.