CHEMICALLY ADSORBABLE SUBSTANCE FOR THIN FILM FORMATION AND PROCESS FOR PRODUCING THE SAME

摘要

A chemically adsorbable substance for thin film formation which has at least a functional group represented by chemical formula (1-1) and a terminal -SiX group (X is a halogen) bonded through a siloxane linkage. It is hence a novel, chemically adsorbable substance capable of forming a thin monomolecular film, is transparent and stable in the visible light region, and has a photosensitive group undergoing a photochemical reaction in the ultraviolet region. The liquid-crystal alignment film is made up of molecules chemically adsorbed on a surface of an electrode-bearing substrate either directly or through a layer of another substance, the molecules having a characteristic group represented by chemical formula (1-1) and a terminal group bonded to -O-Si. The molecules are hence evenly and tenaciously fixed to the substrate and are excellent also in the thermal stability and control of alignment. Thus, a liquid-crystal alignment film with a thickness on the order of nanometer can be efficiently produced, and an LCD containing the same can be provided.