Circular polarizer and preparation method thereof

A circular polarizer and polarizing layer technology, applied in optics, optical elements, polarizing elements, etc., can solve the problems of complicated polarizer process, increased weight of organic electroluminescence display, poor flexural performance, etc.

Active Publication Date: 2017-01-25
BEIJING LYRA MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The polarizer prepared by this traditional process is complicated in process, high in cost and thick in thickness, generally between 150 and 250 μm in thickness
If this kind of polarizer is applied to an organic electroluminescent display a...

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  • Circular polarizer and preparation method thereof
  • Circular polarizer and preparation method thereof
  • Circular polarizer and preparation method thereof

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Embodiment Construction

[0040] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0041] In this embodiment, "%" refers to mass percentage unless otherwise specified.

[0042] Such as figure 1 As shown, the circular polarizer of this embodiment includes: a substrate 1 , a first alignment layer 2 , a polarizing layer 3 , a second alignment layer 4 and a retardation layer 5 .

[0043] In this embodiment, the polymerizable liquid crystal monomers in the polymerizable liquid crystals in the polarizing layer include double polymerizable group monomers and single polymerizable group monomers; Isotropic, nematic, and crystalline phases, monopolymerizable group monomers exhibit isotropy, nematic phase, smectic phase, and crystalline phase in sequence from low to high temperature, when the temperature is slightly lower than the monopolymerizable group monomer When the transition point from the bulk nematic phase to the smectic...

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Abstract

The invention discloses a circular polarizer and a preparation method thereof. In the invention, the surface of a base material is coated with a first orientation layer and a second orientation layer respectively; a phase difference layer is formed on the surface of the second orientation layer; the surface of the first orientation layer is coated with a polarization layer mixture; the polarization layer mixture comprises multiple polymerizable liquid crystal monomers, a dichroic pigment and an ultraviolet absorber; under ultraviolet irradiation, the polymerizable liquid crystal monomers with more polymerizable groups on the side close to the ultraviolet light source are enriched, and the polymerizable liquid crystal monomers with fewer polymerizable groups on the side far from the ultraviolet light source are enriched; the polymerizable liquid crystal monomers with more polymerizable groups are in a nematic phase, the viscosity of the nematic phase is relatively low, and a continuous and perfect cured film is formed; the polymerizable liquid crystal monomers with fewer polymerizable groups are in a smectic phase, and the smectic phase is an ideal two-dimensional ordered structure and realizes a polarization effect to form a polarization layer; and the circular polarizer has a thinning property and a good flexural property as well as a good anti-reflection property in the whole visible light range.

Description

technical field [0001] The invention relates to the display field, in particular to a circular polarizer and a preparation method thereof. Background technique [0002] Organic electroluminescent display technology has the advantages of self-illumination, wide viewing angle, almost infinitely high contrast ratio, low power consumption, high response speed and flexibility, etc., and is considered to be the next-generation mainstream display technology to replace liquid crystal display technology. However, the currently used organic electroluminescent display has a metal electrode structure, which has reflections under strong indoor or outdoor light, which causes reading interference and causes the dark state to be not dark enough. The general solution is to add a circular polarizer that can resist ambient light reflection on the outside. After the external natural light passes through the circular polarizer, only the circularly polarized light of one direction passes through...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02F1/1337
CPCG02B5/305G02B5/3091G02F1/133788
Inventor 张立培
Owner BEIJING LYRA MATERIAL TECH CO LTD
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