Patent ID: 6808566
Filing Date: 2004-10-26
Classification: B05D,H01L

Abstract:
A reduced-pressure drying unit for a substrate, comprising:a hermetic container provided therein with a mount for mounting thereon a substrate coated with a coating solution made by mixing a component of a coating film and a solvent; a vacuum exhauster connected to said hermetic container through an exhaust passage for reducing a pressure in said hermetic container to vaporize the solvent from the coating solution on the substrate; a pressure sensor for detecting the pressure in said hermetic container; a current member provided to face a front face of the substrate mounted on said mount; and a current member raising and lowering mechanism for raising and lowering said current member, wherein said current member is raised and lowered by said current member raising and lowering mechanism to change in height position while the pressure inside said hermetic container is reduced to vaporize the solvent from the coating solution on the substrate, said current member is changed from a first position to a second position while the solvent is vaporizing from the coating solution on the substrate, and, when a detection value from said pressure sensor becomes a predetermined pressure or lower, the height position of said current member is changed from the first position to the second position.