RETARDATION FILM, METHOD OF MANUFACTURING RETARDATION FILM, LAMINATE, COMPOSITION, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

It is an object of this invention to provide a retardation film which uses a liquid crystal compound, has a suppressed streak defect and shows a good front contrast, and an application thereof. The present invention provides a retardation film in which a liquid crystal compound capable of showing a smectic phase is fixed in the smectic phase, the retardation film including a non-liquid crystal compound which satisfies the conditions A and B: condition A: molecular weight is 10000 or less; and condition B: T0-T1≦30° C. T0 represents the phase transition temperature between the nematic phase and the isotropic phase of a composition which does not contain the non-liquid crystal compound, and T1 represents the phase transition temperature between the nematic phase and the isotropic phase of a composition which contains the non-liquid crystal compound.

主权项

1. A retardation film in which a liquid crystal compound capable of showing a smectic phase is fixed in the smectic phase, the retardation film comprising a non-liquid crystal compound which satisfies the conditions A and B below:
condition A: molecular weight is 10000 or less; and condition B: T0-T1≦30° C.,where, T0 represents a phase transition temperature, in ° C., between a nematic phase and an isotropic phase, of a composition which contains the liquid crystal compound showing the smectic phase, and does not contains the non-liquid crystal compound, andT1 represents a phase transition temperature, in ° C., between a nematic phase and an isotropic phase, of a composition which contains the liquid crystal compound showing the smectic phase, and 6% by mass, relative to the mass of the liquid crystal compound, of the non-liquid crystal compound.