Patent ID: 11174399

Abstract:
According to the present invention, a method for treating the surface of a semiconductor substrate can be provided, the method including bringing the semiconductor substrate into contact with a liquid composition to impart alcohol repellency to the semiconductor substrate, wherein the liquid composition is characterized by containing: 0.01 to 15% by mass of each of at least two compounds selected from surfactants respectively represented by formulae (1) to (6) and salts thereof; and water. (In formulae (1) to (6), RF is selected from the group consisting of compounds in each of which a hydrogen atom in an alkyl group having 2 to 10 carbon atoms is substituted by a fluorine atom; R1 is selected from the group consisting of a covalent bond, an alkylene group having 1 to 6 carbon atoms and others; RHP is selected from the group consisting of a hydroxyl group, a sulfonic acid group and a carboxyl group; R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms and others; R5, R6 and R7 are independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms and others; X− is selected from the group consisting of a hydroxide ion and others; and a represents an integer of 3 to 20 inclusive.)