Patent ID: 6165891
Filing Date: 2000-12-26
Classification: H01L

Abstract:
A method of forming a damascene structure using a low dielectric constant passivation layer or etch stop layer, comprising the steps of:a. providing a semiconductor structure having a first conductive layer thereover;b. forming a passivation layer on said first conductive layer;c. forming a first dielectric layer over said passivation layer;d. forming an etch stop layer over said first dielectric layer;e. forming a second dielectric layer over said etch stop layer; andf. patterning said second dielectric layer, said etch stop layer, and said first dielectric layer to form a via opening stopping on said passivation layer and a trench opening stopping on said etch stop layer;wherein said passivation layer, said etch stop layer, or said passivation layer and said etch stop layer comprise carbon nitride, boron nitride, or boron carbon nitride.