Patent ID: 6358831
Filing Date: 2002-03-19
Classification: H01L

Abstract:
A method for forming a bonding pad comprising:(a) providing a substrate with an insulative layer; (b) patterning a trench in said insulative layer; (c) depositing a first layer of conductive material on said insulative layer; (d) polishing said first layer of conductive material until said insulative layer is exposed, while leaving conductive material in said trench, thereby forming a conductive stripe embedded in said insulative layer; (e) depositing an etch stop layer on said substrate; (f) patterning said etch stop layer to form an opening exposing a segment of said conductive stripe to which a bonding pad is to be directly connected; (g) depositing a second layer of conductive material on said etch stop layer; and (h) patterning said second layer of conductive material to form a bonding pad over said opening and connected to said segment, said bonding pad being rectangular and having planar length and width dimensions of between about 40 and 100 microns whereby said bonding pad extends over said etch stop layer and connects to a said segment through said opening.