Patent ID: 6287950
Filing Date: 2001-09-11
Classification: H01L

Abstract:
A method of forming a bonding pad structure on a substrate, comprising the steps of:forming a metallic bonding pad over the substrate;forming a first passivation layer over the substrate and the metallic bonding pad;patterning the first passivation layer to form a plurality of openings above the metallic bonding pad;removing a portion of exposed bonding pad material to form a pattern with a plurality of recesses on the metallic bonding pad while using the first passivation layer as a mask;forming a patterned second passivation layer above the first passivation layer, wherein the second passivation layer has an opening above the metallic bonding pad; andremoving any residual first passivation layer above the metallic bonding pad so that an entire bonding pad surface is exposed.