Patent ID: 6695926
Filing Date: 2004-02-24
Classification: H01L

Abstract:
A method of treating semiconductor wafers including cleaning and drying the wafers in a sealed container comprising the sequential steps of:transferring and vertically placing a plurality of wafers in a container and sealing the container; feeding an inert gas into the sealed container; feeding a quantity of warm pure water into the sealed container sufficient to completely submerge the plurality of wafers and establish a level of the warm pure water in the sealed container; feeding a vapor or fog of an organic solvent into at least a space in the sealed container above the level of the warm pure water; terminating the feeding the vapor or fog of the organic solvent; drying the plurality of wafers by aspirating the warm pure water through an outlet in the bottom of the container wherein the pressure in the container is reduced during the aspiration; and contolling the pressure in the sealed container to provide a preset reduced pressure in the sealed container at least until the aspiration is complete, the inert gas being fed into the sealed container until at least the termination of the drying of the plurality of wafers.