Abstract
We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of a diamond like carbon (DLC) thin film. A high pretilt angle of about <TEX>$3.5^{\circ}$</TEX> by ion beam(IB) exposure on the DLC thin film surface was measured. A good LC alignment by the IB alignment method on the DLC thin film surface was observed at annealing temperature of <TEX>$200^{\circ}C$</TEX>, and the alignment defect of the NLC was observed above annealing temperature of <TEX>$220^{\circ}C$</TEX>. Consequently, the high NLC pretilt angle and the good thermal stability of LC alignment by the IB alignment method on the DLC thin film surface can be achieved.
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