Patent ID: 6576394
Filing Date: 2003-06-10
Classification: G03F,Y10S

Abstract:
A chemically-amplified, negative-acting, radiation-sensitive photoresist composition that is developable in an alkaline medium, the photoresist comprising:a) a phenolic film-forming polymeric binder resin having ring bonded hydroxyl groups; b) a photoacid generator that forms an acid upon exposure to radiation, in an amount sufficient to initiate crosslinking of the film-forming binder resin; c) a crosslinking agent that forms a carbonium ion upon exposure to the acid of b) generated by exposure to radiation, and which comprises an etherified aminoplast polymer or oligomer; d) a second crosslinking agent that forms a carbonium ion upon exposure to the acid of b) generated by exposure to radiation, and which comprises dihydroxyalkyl-(tetra)-phenol, wherein the total amount of the crosslinking agents of c) and d) is an effective crosslinking amount; and e) a photoresist solvent.