Provided is a polarizing film showing high dichroism.
A polarizing film comprising a substrate, and a photo alignment film and a light absorption anisotropic film laminated on the substrate in this order, wherein the light absorption anisotropic film has a content ratio of 30% by mass or less of a liquid crystalline non-colorable low molecular weight compound and is obtained by fixing the alignment of a dichroic dye composition comprising at least one nematic liquid crystalline azo dichroic dye; in X-ray diffraction measurement thereof, diffraction peaks derived from periodic structure along a vertical direction to the alignment axis are present, the period indicated by at least one of the diffraction peaks is 3.0 to 15.0Å and an intensity of the diffraction peak does not show a maximum value in the range of ±70° of the film normal line direction in a plane vertical to the alignment axis.
本发明提供了一种具有高二色性的偏光膜。
一种偏光膜,包括基片、依次层叠在基片上的光配向膜和光吸收各向异性膜,其中光吸收各向异性膜的液晶非可着色低分子量化合物的质量含量比为 30% 或更少,并且是通过固定由至少一种向列液晶偶氮二向色
染料组成的二向色
染料组合物的配向而获得的;在对其进行的 X 射线衍射测量中,存在由沿排列轴垂直方向的周期性结构衍生的衍射峰,其中至少一个衍射峰指示的周期为 3.0至15.0埃,并且衍射峰的强度在垂直于配准轴的平面内薄膜
法线方向±70°的范围内不显示最大值。