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Two-Domain Hybrid-Aligned Nematic Cell Fabricated by Ion Beam Treatment of Vertical Alignment Layer

Organic materials for vertical alignment can be used to align liquid crystals horizontally by irradiating an ion beam on the surface under appropriate conditions. Using this technique, we can achieve easily a multidomain alignment for a hybrid-aligned nematic (HAN) cell. We found that a two-domain HAN cell obtained by ion beam exposure shows excellent electro-optical characteristics. The use of the same alignment material in a HAN cell could reduce the cost of production and generation of DC offset voltage.