Patent ID: 8286580

Claim:
An apparatus for treating a substrate by supplying a chemical solution onto the substrate to perform a process, the apparatus comprising: a support member on which the substrate is mounted; a chemical solution supply member supplying the chemical solution onto the substrate mounted on the support member; and a fluid supply member supplying a fluid onto the substrate, the fluid controlling a temperature of the substrate at a preset process temperature before the chemical solution is supplied to the substrate, wherein the fluid supply member includes: a fluid supply line through which the fluid is supplied, and a first temperature control member controlling a temperature of the fluid, the first temperature control member including a first temperature control fluid supply line enclosing at least a portion of the fluid supply line, through which a first temperature control fluid flows, and a first temperature controller controlling a temperature of the first temperature control fluid, and wherein the process is a process of coating a photosensitive solution on the substrate, the chemical solution is the photosensitive solution, the fluid is a treating solution which allows the photosensitive solution to be easily diffused on the substrate, the fluid supply member includes a treating solution supply member supplying the treating solution onto the substrate, and the fluid supply line includes a treating solution supply line through which the treating solution is supplied; and a cleaning solution supply member cleaning a rear surface of the substrate, wherein the cleaning solution supply member includes: a cleaning solution supply line supplying a cleaning solution onto the rear surface of the substrate, and a second temperature control member controlling temperature of the cleaning solution flowing through the cleaning solution supply line, the second temperature control member including a second temperature control fluid supply line enclosing at least a portion of the cleaning solution supply line, through which a second temperature control fluid flows and a second temperature controller controlling temperature of the second temperature control fluid.