Patent ID: 6749688
Filing Date: 2004-06-15
Classification: B05C,B05D,G03F

Abstract:
An apparatus for coating a target region of a substrate selected from the group consisting of a semiconductor wafer and a liquid crystal display substrate with a photo-resist, comprising:a support configured to support said substrate substantially horizontal; a solvent supply port configured to supply a solvent for said photo-resist from a source of solvent into a first area above the substrate for deposit onto said target region of said substrate supported by said support; a photo-resist supply port configured to supply said photo-resist from a source of photo-resist into a second area above the substrate for deposit onto said target region of said substrate supported by said support, the photo-resist supply port being separated from the solvent supply port by a distance that substantially prevents said solvent and said photo-resist from being in contact when supplied into the first and second areas above the substrate; and a shifting member configured to move said ports relative to said substrate supported by said support, in a straight line direction from a location adjacent to a first end portion of said target region to a location adjacent to a second end portion of said target region, such that said photo-resist supply port is moved along with but immediately behind said solvent supply port in said straight line direction, while said solvent and said photo-resist are being supplied, wherein said solvent supply port and said photo-resist supply port are further configured to respectively supply said solvent and said photo-resist substantially out of contact into the first and second areas above the substrate substantially across a full width dimension of said substrate all at once, said full width dimension of said substrate being measured in a direction perpendicular to said straight line direction.