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Preparation method of reflection circularly polarized light polaroid

A circularly polarized light and polarizer technology, which is applied in the field of preparation of reflective circularly polarized light polarizers, can solve the problems of unstable optical properties, high brittleness of glassy liquid crystal materials, etc., achieves suitable mechanical properties, overcomes high brittleness, The effect of simple film forming process

Inactive Publication Date: 2008-10-15
UNIV OF SCI & TECH BEIJING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a reflective circularly polarized light polarizer, which solves the problems of high brittleness and unstable optical properties of glassy liquid crystal materials

Method used

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  • Preparation method of reflection circularly polarized light polaroid
  • Preparation method of reflection circularly polarized light polaroid
  • Preparation method of reflection circularly polarized light polaroid

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Preparation of Mesogen Density Gradient Distribution Composite Films

[0025] The glassy cyclosiloxane liquid crystals with central reflection wavelengths of 550nm, 660nm and 750nm (the central reflection wavelengths refer to those obtained under the same process conditions in different glassy liquid crystals) were mixed with dichloromethane, photoinitiator, The photopolymerizable monomers, solvents, etc. are mixed evenly. First, coat the glass substrate with a mixed solution with a central reflection wavelength of 550 nm. Under dark conditions, evaporate the solvent at room temperature; 24 hours later, coat the central reflection on the basis of this film. The mixed solution with a wavelength of 660nm, under the dark condition, volatilizes the solvent at room temperature; 24 hours later, the mixed solution with the central reflection wavelength of 750nm is coated on the basis of the film, and under the dark condition, the solvent is volatilized at room temperature to ob...

Embodiment 2

[0031] Preparation of Mesogen Density Gradient Distribution Composite Films

[0032] The glassy cyclosiloxane polymer liquid crystal with the central reflection wavelengths of 550nm, 660nm and 750nm is mixed with photoinitiator, polymerization inhibitor, dichloromethane, etc., respectively, and after vacuum drying, powder is made separately; The powders were mixed uniformly in a ratio of 1:1:1.

[0033] Orientation processing

[0034]The mixed powders with different central reflection wavelengths are placed on the surface of the glass substrate that has been polished and oriented with alcohol cotton, and then the glass substrate with the mixed powders and the polyester film substrate that has been polished and oriented on the surface are placed in a 90°C heat. On the stage, after half a minute, the polyester film is covered on the surface of the composite film, and the roller is oriented.

[0035] Fixation of molecular helical structure and pitch gradient distribution

[00...

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Abstract

The present invention provides a preparation method of reflected circular polarized light Polaroid. Said method includes the following steps: uniformly mixing glass state liquid crystal, photopolymerisable monomer, photoinitiator and antipolymerizer, film-forming or making them into powder which can be applied on the surface of baseplate; utilizing proximity glass state liquid crystal film with different central reflecting wavelength or molecular diffusion between powder to create concentration gradient of mesomorphic element, adopting proper process at a certain temperature to make orietation so as to obtain mesomorphic elementary spiral arrangement structure and pitch gradient distribution, cooling and fixing the mesomorphic elementary spiral arrangement structure and pitch gradient distribution, then irradiating and cross-linking the above-mentioned film so as to obtain the invented liquid crystal reflecting type circular polarized light polaroid.

Description

technical field [0001] The invention belongs to the technical field of polarizers, and in particular relates to a preparation method of a reflective circularly polarized light polarizer. The prepared reflective circularly polarized light polarizer has stable optical performance. Background technique [0002] Realizing the helical arrangement structure and pitch gradient distribution of mesogens in liquid crystal materials is an effective means to obtain reflective circularly polarized light polarizers, which are used in full-color display, information display and storage materials, reflective polarizers, decorative materials and Reflective films and other aspects have broad development potential, so how to effectively and long-term stable fixation of the helical arrangement and pitch gradient distribution of the established mesogens is the key to obtaining a liquid crystal circularly polarized light polarizer with excellent optical properties. . [0003] At present, there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30G02F1/13
Inventor 杨槐肖久梅何万里马征耿君张立培魏强原小涛李克轩石琳高瑾曹晖高建勋王丽萍杨穆海明潭王戈
Owner UNIV OF SCI & TECH BEIJING
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