Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.349, 255-258, 2000
Viewing characteristics of nematic liquid crystal cells with homogeneous micro-domains embedded in omeotropic alignment
The hybrid double layer with homogeneous micro-domains embedded in homeotropic alignment was used for improving viewing characteristics of vertically aligned nematic liquid crystal (LC) cells. After surface treatment of a polyimide (PI) layer blended with [poly(vinyl cinnamate)] (PVCi), the homogeneous micro-domains were found to be uniformly distributed over the homeotropic layer, The contrast ratio of LC cells, made with the hybrid double layer, along the direction of 45 degrees to one of the polarizers, was about 10:1 up to +/-39 degrees without any compensation film.
Keywords:viewing characteristics;vertically aligned mode;homeotropic-homogeneous hybrid double layer