Synthesis and properties of Polyimides

Abstract

It has now widely been used the polyimides for LCD aligner. One of the most important factor for LCD is control of the pre-tilt angle of LC. But it is not clear the relationship between the pre-tilt angle of LC and the structure of the polymer aligner. The objective of this study is to synthesize the polyimide of high per-tilt angle. The side chain polyimides substituted by mesogenic or perfluorinated alkyl group showed the pre-tilt angle of 2 to 50°. The pre-tilt angle also effected the structure of the main chain group. Those results are agreed with the calculation by MOPAC.