Patent ID: 6579370
Filing Date: 2003-06-17
Classification: G03F,H01L

Abstract:
An apparatus for coating treatment, in which a substrate is coated with a predetermined process solution, followed by applying a heat treatment to the resultant coating, comprising:a coating section for coating the substrate with a process solution; a heating section for heating the substrate coated with said process solution; and a recovery section for recovering at least a part of the solvent vapor contained in the hot exhaust gas discharged from said heating section, wherein said recovery section includes a cooling apparatus for cooling and liquefying said solvent vapor for recovery of liquefied solvent, wherein said cooling apparatus includes a process chamber for cooling and condensing mist and vapor contained in the hot exhaust gas discharged from said heating section for separating said mist and vapor in the form of a liquid, an inlet pipe for introducing said hot exhaust gas into said process chamber, a gas passageway through which flows the exhaust gas after separation of the mist and vapor therefrom within said process chamber, an exhaust pipe communicating with said gas passageway for discharge of the exhaust gas to the outside, and a liquid recovery chamber for recovering the liquid condensed in said process chamber.