Patent ID: 7109119
Filing Date: 2006-09-19
Classification: H01L

Abstract:
1. A damascene method comprising: providing a substrate with a first stack of layers formed thereon, said first stack comprised of a lower etch stop layer, a middle dielectric layer, maid an upper passivation layer wherein one or more of said layers is comprised of a nitrogen containing compound; forming a via hole in said passivation and dielectric layers; filling said via hole with a resin; forming a second stack of layers upon said first stack, said second stack is comprised of a lower barrier layer, a middle anti-reflective film (BARC), and an upper photoresist layer, said barrier layer being made from a material that is different from the material of said BARC and the material of said passivation layer; patterning said photoresist to form a trench; and transferring said pattern into at least a portion of said first stack.