Patent ID: 6069066
Filing Date: 2000-05-30
Classification: H01L

Abstract:
A method of forming a bonding pad, comprising the steps of:providing a substrate;forming an inter-metal dielectric layer on the substrate, wherein the inter-metal dielectric layer has a trench therein;forming a conformal barrier layer on the inter-metal dielectric layer;forming a first metal layer on the conformal barrier layer to fill the trench partially;forming a second metal layer on the first metal layer to fill the trench;removing a part of the second metal layer and a part of the first metal layer simultaneously until the inter-metal dielectric layer is exposed;forming a cap layer on the inter-metal dielectric layer;forming a passivation layer on the cap layer; andremoving a part of the passivation layer and a part of the cap layer to form a bonding pad window exposing the second metal layer positioned in the trench.