The present invention is related to a method for forming vertical
conductive structures by electroplating. Specifically, a template
structure is first formed, which includes a substrate, a discrete metal
contact pad located on the substrate surface, an inter-level dielectric
(ILD) layer over both the discrete metal contact pad and the substrate,
and a metal via structure extending through the ILD layer onto the
discrete metal contact pad. Next, a vertical via is formed in the
template structure, which extends through the ILD layer onto the discrete
metal contact pad. A vertical conductive structure is then formed in the
vertical via by electroplating, which is conducted by applying an
electroplating current to the discrete metal contact pad through the
metal via structure. Preferably, the template structure comprises
multiple discrete metal contact pads, multiple metal via structures, and
multiple vertical vias for formation of multiple vertical conductive
structures.