Patent ID: 8932390
Filing Date: 2015-01-13
Classification: C11D,H01L

Abstract:
1. A liquid chemical for forming a water-repellent protecting film, comprising: an agent for forming the water-repellent protecting film, the agent being for forming the water-repellent protecting film on a wafer after a cleaning step for the wafer and before a drying step for the wafer, the wafer having at its surface an uneven pattern and containing at least one kind element of titanium, tungsten, aluminum, copper, tin, tantalum and ruthenium at surfaces of recessed portions of the uneven pattern, the water-repellent protecting film being formed at least on the surfaces of the recessed portions; and a solvent, wherein the agent for forming the water-repellent protecting film is a compound represented by the following general formula [1] wherein R R a is an integer between 0 and 2.