RANDOM DISPERSION-TYPE REFLECTION POLARIZER

摘要

A reflection-type polarizer according to the present invention has an improved bright line visibility phenomenon and a wider viewing angle, compared with a conventional dispersion-type reflection polarizer, and can maximize luminance improvement while minimizing optical loss. In addition, in connection with implementing a reflection polarizer, a group dispersion body can be formed through simple control, making it possible to maximize productivity improvement through process simplification.

主权项

1. A random dispersion-type reflective polarizer, comprising:
a core layer, which, to transmit first polarized light emitted from the outside and reflect second polarized light, includes a plurality of dispersed bodies in a base, the plurality of dispersed bodies having a different refractive index in at least one axis direction in the base, and 80% or more of the dispersed bodies in the base having an aspect ratio, indicating a ratio of the length of the minor axis to the length of the major axis, based on a vertical cross-section in the lengthwise direction of ½ or less, where the dispersed bodies having an aspect ratio of ½ or less are divided into three or more groups having different cross-sectional areas, the cross-sectional area of the first group is 0.2 to 2.0 μm2, the cross-sectional area of the second group is more than 2.0 to 5.0 μm2, and the cross-sectional area of the third group is more than 5.0 to 10.0 μm2, and the first to third groups of dispersed bodies are randomly aligned.