Patent ID: 6875286
Filing Date: 2005-04-05
Classification: B08B,H01L,Y10S

Abstract:
1. A method for removing solid and/or liquid residues from a semiconductor substrate comprising the steps of: supplying a pressure vessel; supplying in the vessel a semiconductor substrate having a surface containing residues to be removed therefrom; supplying a material in the vessel at a pressure and temperature so that the material is a liquid or the material is above the critical pressure and temperature so that the material is a supercritical fluid; lowering the temperature of the substrate surface so that the material contacting the surface of the substrate is converted to solid state on the substrate surface; changing the temperature and/or pressure in the vessel so that the material in the vessel is converted to a liquid and/or gaseous state; removing the material and residues from the vessel; and removing the semiconductor substrate from the vessel.