Patent ID: 8338082
Filing Date: 2012-12-25
Classification: G03F

Abstract:
1. A method of fabricating an integrated circuit comprising the steps of: depositing a photoresist film having a plurality of dye molecules embedded therein on a surface of a semiconductor wafer having a diameter of approximately 300 mm; exposing a region of the photoresist film to UV light; applying a developer solution to remove a portion of the photoresist film leaving an exposed region, wherein a subset of the plurality of dye molecules remain in the exposed region; removing the subset of the plurality of dye molecules from the exposed region by dispensing a rinsing liquid on the surface of the semiconductor wafer while spinning said semiconductor wafer at a lower speed to create a radial flow pattern in the rinse liquid such that the rinse liquid has a higher flow speed in an edge region of the semiconductor wafer than in a center region of the semiconductor wafer and to prevent dye molecules from collecting at an edge of the photoresist film; and drying the semiconductor wafer by spinning the semiconductor wafer at a higher speed to remove the rinse liquid from the surface.