Reduction of gamma distortions in liquid crystal display by anisotropic voltage-dividing layer of reactive mesogens

We demonstrate a new concept of reducing the off-axis gamma distortions in a liquid crystal display by the formation of an anisotropic voltage-dividing layer (AVDL) on the alignment layer. The AVDL was prepared using reactive mesogens (RMs) by simple spin-coating, followed by the photo-polymerisation under the exposure of ultraviolet light (UV) through a photomask and the removal of residual RMs. The UV exposure time for the photo-polymerisation was found to be critical for the uniform alignment of the liquid crystal molecules on the AVDL. Owing to the capacitance difference between the sub-domains produced by the AVDL, the threshold voltage shift was naturally appeared in sub-domain by domain so that the reduction of the gamma distortions in the off-axis was achieved in a simple way.