SILICON-BASED LIQUID CRYSTAL ALIGNMENT AGENT LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY ELEMENT

摘要

Even in a liquid crystal display element in which a liquid crystal without addition of a polymerizable compound is processed in the same manner as the PSA system and the response speed after UV irradiation is improved, the response speed after UV irradiation is improved without lowering the vertical alignment power A liquid crystal alignment film obtained from the liquid crystal alignment agent, and a liquid crystal display element having the liquid crystal alignment film.A liquid crystal aligning agent containing the following polysiloxane (A) and polysiloxane (B).Polysiloxane (A): A polysiloxane obtained by polycondensation of an alkoxysilane represented by formula (1) and an alkoxysilane containing alkoxysilane represented by formula (2).R^OneSi (OR²)₃(One)(R^OneIs a hydrocarbon group of 8 to 30 carbon atoms which may be substituted with a fluorine atom, R²Represents an alkyl group having 1 to 5 carbon atoms)R³Si (OR⁴)₃(2)(R³Is an alkyl group substituted with an acrylic group, a methacryl group or an aryl group, and R⁴Represents an alkyl group having 1 to 5 carbon atoms)Polysiloxane (B): A polysiloxane obtained by polycondensation of an alkoxysilane containing 70% to 100% of an alkoxysilane represented by the formula (3).Si (OR⁵)₄(3)(R⁵Represents an alkyl group having 1 to 5 carbon atoms)