Patent ID: 8187798
Filing Date: 2012-05-29
Classification: G03F,H01L

Abstract:
1. A method of forming fine patterns comprising: subjecting a substrate having photoresist patterns to a hydrophilic treatment, then covering the substrate having photoresist patterns, which has been subjected to the hydrophilic treatment, with an over-coating agent for forming fine patterns, applying heat treatment to cause thermal shrinkage of the over-coating agent so that the spacing between adjacent photoresist patterns is lessened by the resulting thermal shrinking action, and removing the over-coating agent substantially completely, wherein: the heat treatment is performed at a temperature that does not cause thermal fluidizing of the photoresist patterns on the substrate, and the hydrophilic treatment is performed by applying at least one hydrophilic solvent selected from the group consisting of pure water, a water-soluble surfactant aqueous solution and an alcohol aqueous solution on the substrate having photoresist patterns.