Patent ID: 6665028
Filing Date: 2003-12-16
Classification: C09K,G02B,G02F

Abstract:
An optical diffusing plate comprising a birefringent film and a minute domain with a birefringent characteristic different from the birefringent film in a dispersed state in the birefringent film,the minute domain comprising a side chain type liquid crystal polymer comprising a monomer unit (a) containing a liquid crystalline fragment side chain and a monomer unit (b) containing a non-liquid crystalline fragment side chain, and a refractive index difference (&Dgr;n1) between the birefringent film and the minute domain in a direction orthogonal to a direction of axis that gives a maximum transmittance of linearly polarized light being 0.03 or more, and a refractive index difference (&Dgr;n2) in a direction of axis that gives a maximum transmittance being 80% or less of the &Dgr;n1.