1995 Volume 8 Issue 2 Pages 233-240
Synthesis, characterization, and liquid crystal (LC) aligning capability of polyimide (PI) for the active matrix (AM) liquid crystal display (LCD) application are demonstrated and discussed. The synthesized PI materials in this research are featured by: 1) a low curing temperature below 200°C due to their organic-solvent-soluble property; 2) a good unidirectional LC alignment; 3) a useful capability for generating desired pretilt angles; and 4) an excellent voltage holding ratio. The methods and mechanisms of the unidirectional LC alignment, the generation of pretilt angle, and voltage holding ratio are discussed.
