Patent ID: 6706339
Filing Date: 2004-03-16
Classification: C09K,G02B

Abstract:
A laminate polarizer comprising:a dichroic polarizing sheet; and a polarized-light scattering sheet anisotropy in scattering properties depending on a direction of polarization and being laminated on said dichroic polarizing sheet, wherein an absorption axis of said dichroic polarizing sheet and an optical axis of said polarized-light scattering sheet in which polarized light is intensely scattered are in parallel to each other, and wherein said laminated polarizer improves a degree of polarization of transmitted light without an increase in reflectance; wherein said polarized-light scattering sheet comprises a transparent film having dispersed therein fine domains different from a remaining portion of said polarized-light scattering sheet in birefringence characteristics, wherein a difference in refractive index between said fine domains and said remaining portion is 0.03 to 0.5 in an optical axis in which linearly polarized light is scattered most intensely (&Dgr;n1 direction) and less than 0.03 in an optical axis in which linearly polarized light is scattered most weakly (&Dgr;n2 direction), and said fine domains comprise a liquid crystal polymer which has a glass transition temperature of 50Â° C. or higher or a liquid crystal polymer formed from crosslinking crosslinkable liquid crystal monomers, and exhibits a nematic liquid crystal phase in a temperature range lower than a glass transition temperature of a polymer forming said remaining portion.