Patent ID: 6943124
Filing Date: 2005-09-13
Classification: G03F,H01L

Abstract:
1. A method of forming a pattern with improved structural strength in a negative tone photosensitive film comprising: (a) coating a single photosensitive solution on a substrate and baking to form a single photosensitive film, (b) exposing said substrate with a patterned mask and first exposure dose that does not completely crosslink the photosensitive film, (c) developing said exposed photosensitive film in an aqueous base solution, and (d) exposing said developed photosensitive film without a mask and a second exposure dose that is higher than first exposure dose to form a saturated crosslinked network, (e) wherein a develop time after said first exposure dose is less than required for a develop time with a single exposure method having a higher dose than said first exposure dose.