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Electric response reflection device and preparation method thereof

A reflective device, electrical response technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of inflexibility, single color, single, etc.

Active Publication Date: 2019-05-31
SOUTH CHINA NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the application of reflective smart glass is very extensive. For example, the reflective smart glass with reflective band in the infrared can be applied to buildings, which can achieve the purpose of energy saving by achieving indoor warmth in winter and cool in summer; reflective smart glass with reflective band in the visible band can be applied In color display, but the reflective smart glass in the visible band currently realizes a single color, which is relatively single and not very flexible.

Method used

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  • Electric response reflection device and preparation method thereof
  • Electric response reflection device and preparation method thereof
  • Electric response reflection device and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] An electrical response reflective device, the preparation method of which comprises the following steps:

[0028] S1. Take the first light-transmitting conductive substrate and the second light-transmitting conductive substrate. In this embodiment, the first light-transmitting conductive substrate and the second light-transmitting conductive substrate are light-transmitting conductive glass substrates;

[0029] S2. Weigh polyvinyl alcohol and dissolve it in deionized water, add 1 mass part (1 g per mass) of photoinitiator Irgacure-651 to mix, prepare a solution with a concentration of 5 wt%, and stir at 60°C until completely dissolved Then spin-coat on a surface of the first light-transmitting conductive substrate to prepare an alignment layer material layer, control the film thickness by controlling the spin-coating speed and time to be about 75 nanometers, and then rub parallel alignment to form the first parallel alignment layer; Weigh polyvinyl alcohol and dissolve ...

Embodiment 2

[0049] This example is basically the same as Example 1, except that the liquid crystal mixture includes 80 parts by mass of negative liquid crystal MLC-2079, 16.5 parts by mass of chiral polymerizable liquid crystal monomer HCM-006 and 3 parts by mass of polymerizable Liquid crystal monomer HCM-002; the alignment layer material in the first parallel alignment layer is doped with 0.5 parts by mass of photoinitiator Irgacure-819; each part by mass is 1 g.

Embodiment 3

[0051] This example is basically the same as Example 1, except that the liquid crystal mixture includes 85 parts by mass of negative liquid crystal HNG-30400-200, 8 parts by mass of chiral polymerizable liquid crystal monomer HCM-006, and 5 parts by mass of Polymerizable liquid crystal monomer HCM-008; in addition, in this embodiment, the material of the alignment layer is polyimide; the material of the alignment layer in the first parallel alignment layer is doped with 2 parts by mass of photoinitiator Irgacure-369; 1g.

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Abstract

The invention discloses an electrical response reflection device and a preparation method thereof. The electrical response reflection device comprises a first light-transmitting conductive substrate and a second light-transmitting conductive substrate which are opposite to each other; a surface of the first light-transmitting conductive substrate, which faces the second light-transmitting conductive substrate, is provided with a parallel-oriented alignment layer material layer which is doped with a photoinitiator; a surface of the second light-transmitting conductive substrate, which faces thefirst light-transmitting conductive substrate, is provided with a parallel-oriented alignment layer material layer; a space between the first light-transmitting conductive substrate and the second light-transmitting conductive substrate is encapsulated so as to form a liquid crystal cell; the liquid crystal cell is filled with a liquid crystal mixture; the liquid crystal mixture comprises a negative liquid crystal and a polymerizable liquid crystal monomer; and the polymerizable liquid crystal monomer comprises a chiral polymerizable liquid crystal monomer, and / or the liquid crystal mixture may also comprise a chiral dopant. According to the electrical response reflection device of the above technical schemes of the invention, the magnitude of a direct current voltage can be adjusted, sothat the continuous color controllability can be realized in a range of near-infrared light and visible light in a certain wideband.

Description

technical field [0001] The invention relates to the technical field of optical reflection liquid crystal devices, in particular to an electric response reflection device and a preparation method thereof. Background technique [0002] At present, the application of reflective smart glass is very wide. For example, the reflective smart glass with reflective band in the infrared can be applied to buildings, which can achieve the purpose of energy saving by achieving indoor warmth in winter and cool in summer; reflective smart glass with reflective band in the visible band can be applied In color display, but the current reflective smart glass in the visible band realizes a single color, which is relatively single and not very flexible. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an electro-responsive reflective device and a preparation method thereof. [0004] The technical solution adopted in the present ...

Claims

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Application Information

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IPC IPC(8): G02F1/1334G02F1/1337G02F1/137
Inventor 袁冬周勇聂秋梅胡小文赵威周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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