Abstract
A microrubbing (μ-rubbing) technique is used to create multidomain vertically aligned liquid crystal pixels for wide viewing angle liquid crystal display (LCD) applications. A metallic sphere of 1 mm diameter is used to rub a homeotropic polyimide surface to manipulate the local pretilt angle to create a four-domain pixel configuration. We use μ-rubbing to accurately control the surface pretilt angle of the liquid crystal from the normal, which directs the liquid crystal molecules to respective direction on applying a voltage. We report on the twisted vertically aligned (TVA) configurations showing symmetric isointensity curves, high contrast and attractive electro-optic performance parameters. The viewing angle and electro-optical characteristics are simulated and compared with the experimental results.
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