Patent ID: 8227182
Filing Date: 2012-07-24
Classification: G03F

Abstract:
1. A method of forming a photosensitive film, comprising: pre-wetting the substrate with a thinner composition prior to coating the substrate with the photosensitive composition; coating a substrate with a photosensitive composition to form a coating layer of the photosensitive composition on a substrate; removing a portion of the coating layer of the photosensitive composition from the substrate by applying the thinner composition to the substrate; baking the coating layer of the photosensitive composition to form a photosensitive film on the substrate, after removing a portion of the coating layer of the photosensitive composition from the substrate by applying the thinner composition to the substrate; detecting a defect existing on the photosensitive film; and removing the photosensitive film having the defect from the substrate by applying the thinner composition to the photosensitive film, the thinner composition including about 50 to about 90% by weight of propylene glycol monomethyl ether acetate, about 1 to about 20% by weight of propylene glycol monomethyl ether, about 1 to about 10% by weight of γ-butyrolactone, and about 1 to about 20% by weight of n-butyl acetate.