Patent ID: 8580090

Claim:
An apparatus comprising: a plurality of die mounts, each die mount configured to hold a substrate, wherein the substrate is a diced portion of a wafer, wherein at least one of the die mounts is configured to rotate; a plurality of counter electrodes, wherein each counter electrode is spaced from a die mount of the plurality of die mounts forming a plurality of electrochemical cells, wherein the counter electrodes spaced from the at least one of the die mounts are configured to rotate in opposite direction as compared to that of the at least one of the die mounts, wherein the space between the each counter electrode and the each die mount is configured to contain an electrolyte; wherein the rotations and the spacing of the each die mount and the each counter electrode are configured to retain the electrolyte to the space between the each die mount and the each electrode without a cell wall; wherein the plurality of die mounts and the plurality of counter electrodes are connected to a multichannel potentiostat configured to perform combinatorial electrochemical plating on the substrate held by each of the plurality of die mounts.