PROCESS FOR PREPARING OF LIQUID CRYSTAL ALIGNING LAYER, LIQUID CRYSTAL ALIGNING PREPARED BY THE SAME, AND LIQUID CRYSTAL DISPLAY INCLUDING LIQUID CRYSTAL ALIGNING LAYER

摘要

A method for preparing a liquid crystal aligning layer is provided to obtain a liquid crystal aligning layer having excellent thermal stability, leaving no after-image and showing an excellent alignment effect. The method for preparing a liquid crystal aligning layer comprises the steps of: (1) dissolving a polyamic acid copolymer into an organic solvent to provide a liquid crystal aligning solution, and applying the liquid crystal aligning solution onto the surface of a substrate to form a coating film; (2) drying the solvent contained in the coating film; (3) irradiating polarized UV rays onto the surface of the dried coating film to perform liquid crystal alignment; and (4) heat-treating the aligned coating film to perform imidization.