Liquid crystal device with plural ferroelectric or antiferroelectric layer tilt angles per pixel

摘要

A liquid crystal device used for electro-optical devices, in which each parameter of the liquid crystal having layer structures is specified to provide a liquid crystal high in stress resistance and capable of gray scale display. The liquid crystal held between a pair of parallel substrates is either ferroelectric or antiferroelectric and represents layer structures. A plurality of substrate interface tilt angles can be set for the layer structures. The layer structures can be configured asymmetric or symmetric about a plane intermediate between the parallel substrates. With this configuration, a liquid crystal device is constructed having a plurality of layer structures including at least one layer structure, which has (1) a substrate interface layer tilt angle of 0° to 3° and the c director pretilt of 3. degree. to 5. degree., or (2) a substrate interface layer tilt angle of 4. degree. to 7. degree. and the c director pretilt of 0° to 3° , or (3) a substrate interface layer tilt angle of 8° to 20 . degree. and the c director pretilt of 9° to 90° or less.