Patent ID: 6342455
Filing Date: 2002-01-29
Classification: H01L,H05K

Abstract:
A process for forming an integrated circuit, comprising:(a) providing a substrate having metallic studs dispersed throughout; (b) depositing a solution of an oligomeric precursor onto the substrate to form a coating thereon, the oligomeric precursor having the structural formula (I) whereinn is an integer of 2 or more, q is 0 or 1, R is an oligomeric unit comprised of polybenzoxazole, polybenzothiazole, polyamic acid or a polyamic acid ester, R1 is an aromatic group optionally substituted at one or more available carbon atoms with an inert, nonhydrogen substituent, L is a linking group, and Ar is arylene optionally substituted at one or more available carbon atoms with an inert, nonhydrogen substituent; (c) heating the coating to imidize and crosslink the oligomeric precursor, thereby forming a dielectric coating; (d) lithographically patterning the dielectric coating to form a patterned dielectric layer; and (e) depositing a metallic film onto the patterned dielectric layer.