Alignment of Nematic Liquid Crystal Using Polyimide Langmuir-Blodgett Films (II)

Abstract
A new nonrubbed alignment film for nematic liquid crystals has been developed, which consists of a polyimide precursor Langmuir-Blodgett film with long alkyl groups. In addition, we have discovered that the pretilt angle of nematic liquid crystals can be controlled by changing the thermal treatment temperature of the polyimide precursor Langmuir-Blodgett films.