Patent ID: 8398817
Filing Date: 2013-03-19
Classification: H01L

Abstract:
1. A chemical-liquid processing apparatus to remove a film formed on a substrate, the apparatus comprising: a substrate holding mechanism to hold the substrate horizontally in a state where a back surface of the substrate faces downward; a rotating mechanism to rotate the substrate holding mechanism by a hollow rotating shaft extending vertically, the hollow rotating shaft being positioned perpendicular to the center of the back surface of the substrate; a back-surface chemical-liquid discharge nozzle positioned within the hollow rotating shaft to supply a back-surface liquid to the back surface of the substrate by discharging the back-surface liquid upwardly, the back-surface chemical-liquid discharge nozzle having an upper end and a lower end, with a hole running axially between the two ends; and a chemical-liquid supply mechanism to supply the back-surface liquid to the hole at the lower end of the back-surface chemical-liquid discharge nozzle, wherein the back-surface chemical-liquid discharge nozzle includes at its upper end a substrate supporting part, within which are formed a plurality of outlets that commence at the axis of the hole, and proceed upwardly through the substrate supporting part at an acute angle to the axis of the hole, such that the outlets discharge the back-surface liquid to a plurality of contacting places on the back surface of the substrate.