Patent ID: 6159646
Filing Date: 2000-12-12
Classification: G03F

Abstract:
A rework method for removing photoresist from a wafer for manufacturing semiconductor devices, the method comprising:coating the photoresist onto a metallic layer formed on a semiconductor substrate;photoetching the photoresist;examining the wafer to determine whether an etching failure has occurred;if an etching failure is detected, removing the photoresist coated on the semiconductor substrate by applying a thinner composition to the photoresist, the thinner consisting essentially of a mixture of ethyl lactate (EL) and .tau.-butyro lactone (GBL), said removing comprisingloading the semiconductor substrate, having the metallic layer and photoresist coated thereon, onto a rotatable vacuum chuck;supplying the thinner to the photoresist coated on the semiconductor substrate;maintaining the thinner on the semiconductor substrate for a period of time sufficient to dissolve the photoresist; andremoving the dissolved photoresist and the thinner by rotating the vacuum chuck.