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Titanium dioxide nanorod array film/cholesteric liquid crystal composite broadband reflective film

A nanorod array, cholesteric liquid crystal technology, applied in instrumentation, nonlinear optics, optics, etc., can solve the problems of agglomeration of doped nanoparticles, unstable broadband reflection effect, uneven dispersion, etc., and achieve large birefringence. rate, improve service life, and prolong the effect of maintenance time

Active Publication Date: 2020-09-25
嘉兴鸿画显示科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It has been reported in the literature that doping nanoparticles into cholesteric liquid crystals can broaden the reflection wave width, but doped nanoparticles are prone to agglomeration and uneven dispersion, resulting in unstable broadband reflection effect

Method used

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  • Titanium dioxide nanorod array film/cholesteric liquid crystal composite broadband reflective film
  • Titanium dioxide nanorod array film/cholesteric liquid crystal composite broadband reflective film
  • Titanium dioxide nanorod array film/cholesteric liquid crystal composite broadband reflective film

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Effect test

Embodiment 1

[0040] A titanium dioxide nanorod array film / cholesteric liquid crystal composite broad-wave reflective film, comprising an ITO conductive layer film or glass sequentially connected from top to bottom, a liquid crystal thin layer, an FTO conductive layer film or glass; the ITO conductive layer film Or coating insulating layer on glass; Synthesizing TiO on FTO conductive layer film or glass 2 Nanorod Array Films.

[0041] The ITO conductive layer film or glass and the FTO conductive layer film or glass control the thickness of the liquid crystal layer through a spacer, and the diameter of the spacer is 50 microns.

[0042] The preparation method of the titanium dioxide nanorod array film is as follows:

[0043] (1) Mix 10 kg of concentrated hydrochloric acid and 90 kg of deionized water, stir for 5 minutes, add 5 kg of sodium chloride, stir for 10 minutes to form a homogeneous solution, then add 4 kg of tetrabutyl titanate, and stir for 30 minutes.

[0044] (2) Put an FTO gla...

Embodiment 2

[0064] A titanium dioxide nanorod array film / cholesteric liquid crystal composite broad-wave reflective film, comprising an ITO conductive layer film or glass sequentially connected from top to bottom, a liquid crystal thin layer, an FTO conductive layer film or glass; the ITO conductive layer film Or coating insulating layer on glass; Synthesizing TiO on FTO conductive layer film or glass 2 Nanorod Array Films.

[0065] The ITO conductive layer film or glass and the FTO conductive layer film or glass control the thickness of the liquid crystal layer through a spacer, and the diameter of the spacer is 50 microns.

[0066] The preparation method of the titanium dioxide nanorod array film is as follows:

[0067] (1) Mix 90 kg of concentrated hydrochloric acid and 10 kg of deionized water, stir for 10 minutes, add 1 kg of sodium chloride, stir for 5 minutes to form a homogeneous solution, then add 0.4 kg of tetrabutyl titanate, and stir for 10 minutes.

[0068] (2) Put an FTO g...

Embodiment 3

[0087] A titanium dioxide nanorod array film / cholesteric liquid crystal composite broad-wave reflective film, comprising an ITO conductive layer film or glass sequentially connected from top to bottom, a liquid crystal thin layer, an FTO conductive layer film or glass; the ITO conductive layer film Or coating insulating layer on glass; Synthesizing TiO on FTO conductive layer film or glass 2 Nanorod Array Films.

[0088] The ITO conductive layer film or glass and the FTO conductive layer film or glass control the thickness of the liquid crystal layer through a spacer, and the diameter of the spacer is 50 microns.

[0089] The preparation method of the titanium dioxide nanorod array film is as follows:

[0090] (1) Mix 10 kg of concentrated hydrochloric acid and 90 kg of deionized water, stir for 5 minutes, add 5 kg of sodium chloride, stir for 10 minutes to form a homogeneous solution, then add 4 kg of tetrabutyl titanate, and stir for 30 minutes.

[0091] (2) The continuous...

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Abstract

The invention relates to a titanium dioxide nanorod array film / cholesteric liquid crystal composite broadband reflecting film, and belongs to the field of application of liquid crystal display. In themethod, nematic liquid crystals, a chiral compound, polymerizable monomers and a photoinitiator are used as raw materials; the raw materials are evenly mixed and then injected into the space betweenan indium tin oxide (ITO) conductive thin film or glass with one side coated with an insulating layer and a fluorine-doped tin dioxide (FTO) conductive film or glass with a titanium dioxide nanorod array film growing on one side, and then the titanium dioxide nanorod array film / cholesteric liquid crystal composite broadband reflecting film is prepared. The titanium dioxide nanorod array in the broadband reflecting film can evenly exist on one side of a liquid crystal layer without surface modification; the array layer has an obvious broadened reflection band; the broadband reflecting film canselectively reflect visible light, near-infrared light and far-infrared light with different center peak positions and reflection bandwidths; the broadband reflecting film is environmentally friendly,free of toxicity and capable of saving energy and reducing emission, the preparation process is short, and industrial production can be realized.

Description

technical field [0001] The invention relates to a titanium dioxide nanorod array thin film / cholesteric liquid crystal composite broadband reflection film, which belongs to the field of liquid crystal display. Background technique [0002] Since the liquid crystal itself does not emit light, the broadband reflective film whose reflected wave is in the visible light band can be applied to the liquid crystal display. The liquid crystal display needs the backlight module system to provide the light source, and the backlight module consumes a high proportion of the energy consumption of the whole host, so the image quality of the liquid crystal display is largely affected by the brightness of the backlight. Simply increasing the brightness of the backlight does not meet the requirements of energy saving and emission reduction, but the use of liquid crystal light enhancement film can significantly improve the light utilization rate of liquid crystal displays. In addition, the cho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/137G02F1/1333
CPCG02F1/1333G02F1/13718G02F1/133302
Inventor 王冬刘杨路坤芳罗洁雅张越曹晖杨洲何万里
Owner 嘉兴鸿画显示科技有限公司
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