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Random dispersion-type reflection polarizer

  • US 9,952,363 B2
  • Filed: 12/30/2014
  • Issued: 04/24/2018
  • Est. Priority Date: 12/31/2013
  • Status: Active Grant
First Claim
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1. A random dispersion-type reflective polarizer, comprising:

  • a core layer, which, to transmit first polarized light and reflect second polarized light of light incident upon the core layer, includes a plurality of dispersed bodies in a base, the plurality of dispersed bodies and the base having a different refractive index along at least one axis direction, and the plurality of dispersed bodies having a major axis and a minor axis based on a vertical cross-section taken of the plurality of dispersed bodies, 80% or more of the plurality of dispersed bodies having an aspect ratio, indicating a ratio of a length of the minor axis to a length of the major axis, based on a vertical cross-section in the lengthwise direction of 1/2 or less, where the dispersed bodies having an aspect ratio of 1/2 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 μ

    m2, the cross-sectional area of the second group is more than 2.0 to 5.0 μ

    m2, and the cross-sectional area of the third group is more than 5.0 to 10.0 μ

    m2, and the first to third groups of dispersed bodies are randomly aligned.

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