Patent ID: 7473339

Claim:
A fluid delivery system for a multiple chemistry electrochemical plating platform, comprising: a solution mixing system fluidly communicating with a fluid distribution manifold, wherein the solution mixing system comprises: a fluid metering pump having a plurality of fluid inputs and at least one fluid output in fluid communication with the manifold; a base solution container in fluid communication with one of the plurality of inputs; a plurality of additive containers, each of the plurality of additive containers being in fluid communication with at least one of the inputs; and a controller in communication with the fluid metering pump, the controller being configured to operate the metering pump such that the base solution and fluid from the plurality of additive containers is mixed in a predetermined ratio and dispensed from one of the at least one outputs; a catholyte supply conduit in fluid communication with the manifold and selectively in fluid communication with a plurality of catholyte fluid solution tanks; an anolyte supply conduit in fluid communication with the manifold and selectively in fluid communication with a plurality of anolyte fluid solution tanks, wherein the plurality of catholyte tanks and the plurality of anolyte tanks are grouped into pairs, wherein each pair comprises one catholyte tank and one anolyte tank, wherein each of the pairs is in fluid communication with an individual plating cell, wherein each of the anolyte and catholyte tanks comprise a fluid baffle system positioned in an interior of the tanks, and wherein the baffle system comprises: at least two compartments, the at least two compartments being separated by at least one wall; a fluid feed through positioned in a lower portion of the wall; and at least one angled wall positioned in a fluid flow path within each of the at least two compartments; and a selectively actuated valve positioned adjacent each of the anolyte and catholyte tanks in the supply conduits.