Patent ID: 7494549
Filing Date: 2009-02-24
Classification: B08B,C23F,H01L,Y10S

Abstract:
1. A substrate treatment apparatus for removing an unnecessary substance from a surface of a substrate, the apparatus comprising: an oxidation liquid supply mechanism including an oxidation liquid nozzle for supplying an oxidation liquid having an oxidative effect to the substrate surface; a physical cleaning mechanism including a dual fluid spray nozzle generating a jet flow of droplets of a deionized water and supplying the jet flow to the substrate surface, the dual fluid spray nozzle having a deionized water outlet port ejecting the deionized water towards the surface of the substrate and a gas outlet port blowing a gas onto the deionized water ejected through the deionized water outlet port, the dual fluid spray nozzle being provided separately from the oxidation liquid nozzle; an etching liquid supply mechanism including an etching liquid nozzle for supplying an etching liquid having an etching effect to the substrate surface; and a cleaning controller programmed to control the oxidation liquid supply mechanism and the physical cleaning mechanism, to generate and supply the jet flow of droplets of the deionized water to the substrate surface from the dual fluid spray nozzle simultaneously with supplying the oxidation liquid to the substrate surface from the oxidation liquid nozzle for a period of time, so as to perform physical cleaning of the substrate surface while simultaneously supplying said oxidation liquid to the substrate surface.