Patent ID: 6139645
Filing Date: 2000-10-31
Classification: H01L,Y10S

Abstract:
A method of treating a substrate using Marangoni Effect comprising the steps of:a) immersing the substrate in a bath of a liquid,b) maintaining the substrate in the liquid for a given period of time, andc) separating the substrate from the liquid and bringing the surface of the liquid and the substrate, during separation of the substrate from the liquid, directly into contact with a stream of carrier gas comprising vapor of an organic compound,whereini) the vapor of the organic compound has a vapor pressure which is not saturated at the temperature of the substrate so that during said separation condensation of the vapor on the substrate will not occur,ii) the organic compound is chosen from a group of organic compounds which are soluble in the liquid and which upon dissolving in the liquid lower the surface tension thereof, andiii) the vapor pressure of the organic compound, the solubility of the organic compound in the liquid, and the speed with which the substrate is separated from the liquid creating a gradient in the surface tension of the liquid at the interface where the substrate intersects the surface of the liquid during said separation of the substrate from the liquid, the surface tension decreasing above the surface of the liquid such that, during said separation, substantially no liquid remains attached to the substrate.