Patent ID: 7129011
Filing Date: 2006-10-31
Classification: G03F,Y10S

Abstract:
1. A heat resistant negative working photosensitive composition that comprises (a) one or more polybenzoxazole precursor polymers (I):  wherein x is an integer from about 10 to about 1000, y is an integer from 0 to about 900 and (x+y) is about less then 1000; Ar (b) one or more photo-active compounds which release acid upon irradiation (PAGs); (c) one or more latent crosslinkers, each of which contains at least two ˜N—(CH (d) at least one solvent, and (e) at least one dissolution rate modifier to increase the dissolution rate with the proviso that when the latent crosslinker is highly reactive, the dissolution rate modifier does not contain carboxylic acid groups.