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Abstract— Novel UV‐curable liquid crystals showing nematic phases at room temperature have been developed. The liquid crystals can be utilized to create retardation films with high quality and good thermal stability. The properties of novel UV‐curable liquid crystals and the fabrication of various kinds of retardation films using them are discussed.

A patterned retarder for a transflective LCD can be fabricated by photo polymerization of a liquid crystalline monomer. It is required for the retarder that pattern size is smaller than pixel size of a LCD and that retardation of the retarder is thermally stable against over 200°C. We have optimized liquid crystalline monomer and fabrication processes of the retarder to achieve high quality patterned retarder.

We studied the physical properties of three series of new fluorinated liquid crystal components and prepared some mixtures by using these components. Decahydronaphthalenes have low An with relatively high TNI. Naphthalenes and Tetrahydronaphthalenes have large AE and variety range of An (0.08-0.21). Moreover, we have revealed that the fluoro-substituent at C-l position for the naphthalene and the tetrahydronaphthalene ring has effects to increase TNI and to reduce y~ with good solubility. Then, we have designed some LC mixtures for AM-LCD having good performance with 4V-driving, quick response, high birefringence, low birefringence, wide temperature range and low driving voltage.

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