Patent ID: 8852857
Filing Date: 2014-10-07
Classification: H01L

Abstract:
1. A substrate treatment method of performing treatment on a substrate on which a resist pattern mask has been formed by exposure and developing treatment to improve roughness of the resist pattern mask, said method comprising the processes of: mounting and heating the substrate on a stage in a treatment container, the stage includes a temperature adjustment mechanism, the treatment container includes a lid body; subsequently supplying a solvent gas from a gas discharge port provided in the lid body at a position corresponding to a center portion of the substrate to a front surface of the substrate while exhausting the solvent gas from an exhaust port provided at a periphery of the substrate to swell the resist pattern mask; and while performing said process of supplying and exhausting the solvent gas, forming a temperature gradient in the substrate via the stage such that a temperature at the center portion of the substrate is higher than a temperature at a peripheral portion of the substrate; wherein said process of forming the temperature gradient in the substrate is performed by at least one of (i) adjusting a temperature of the stage by controlling the temperature adjustment mechanism, and (ii) the stage having a front surface in which a center portion of the front surface of the stage is higher in height than a peripheral portion of the front surface of the stage.