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Electric response infrared reflection device and preparation method thereof

A technology of infrared reflection and electrical response, applied in the field of liquid crystal devices and optics, can solve the problems of easy interference with navigation and communication systems, inability to meet people, and difficult to popularize coated glass on a large scale, so as to achieve the effect of adjusting the reflection band.

Inactive Publication Date: 2017-05-10
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, after the coated glass is formed, its optical properties cannot be changed with environmental changes or personal preferences, which cannot meet people's needs
[0005] Moreover, most of the materials used in coated glass are based on ion crystals doped with metals and metal oxides, which can easily interfere with navigation and communication systems.
[0006] Based on the above reasons, it is difficult to popularize coated glass on a large scale

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Three substrates are taken and cut, and a conductive layer is prepared on the surface of the substrate, and a layer of conductive layer is prepared on the upper and lower surfaces of one of the substrates, and the sides of the three light-transmitting conductive substrates with the conductive layer are facing each other, and then packed into liquid crystal cells. The liquid crystal cell has two adjustment areas; take 75-85 parts by mass of chiral nematic liquid crystal, 13-14.5 parts by mass of right-handed chiral dopant, 3-5 parts by mass of monomer and 0.5-1 mass part The photoinitiator of 30 parts is mixed, obtains mixed liquid crystal material A, gets the chiral nematic phase liquid crystal of 87-93 mass parts, the left-handed chiral dopant of 3~4 mass parts, the monomer of 3~5 mass parts and 0.5~ The photoinitiator of 1 mass part is mixed, obtains mixed liquid crystal material B, and wherein, described liquid crystal is negative liquid crystal and is LC-2079, and de...

Embodiment 2

[0037] This embodiment is basically the same as Embodiment 1, except that: the left-handed chiral dopant is S1011 from Merck, Germany, the right-handed chiral dopant is R1011, and the lowermost The conductive layer 2 on the upper surface of the substrate 1 is connected to the negative pole of the first DC power supply 8, the conductive layer 2 on the lower surface of the substrate 1 in the middle is connected to the positive pole of the first DC power supply 8, and the uppermost one is connected to the positive pole of the first DC power supply 8. The conductive layer 2 on the lower surface of the substrate 1 is connected to the positive pole of the second DC power supply 9 , and the conductive layer 2 on the upper surface of the substrate 1 arranged in the middle is connected to the negative pole of the second DC power supply 9 .

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Abstract

The invention discloses an electric response infrared reflection device and a preparation method thereof. The electric response infrared reflection device comprises three light-transmitting conductive substrates which are oppositely arranged, wherein the two adjacent light-transmitting conductive substrates of the three light-transmitting conductive substrates are respectively packaged to form a first adjusting area and a second adjusting area; the first adjusting area and the second adjusting area are filled with liquid crystal layers; each of the liquid crystal layers comprises a mixed liquid crystal material; the mixed liquid crystal material comprises a chiral nematic phase liquid crystal, a monomer, a photoinitiator and a chiral dopant; the spiral direction of the chiral nematic phase liquid crystal in the first adjusting area is opposite to the spiral direction of the chiral nematic phase liquid crystal in the second adjusting area, so that the total reflection of an infrared band can be realized. The monomer is polymerized into a netted polymer under the effect of the photoinitiator, the netted polymer can capture the impurity positive ions in a liquid crystal mixture, the adjusting areas are placed under an electric field, the chiral nematic phase liquid crystals are moved under the driving of the motion of the impurity positive ions and the screw pitches of the chiral nematic phase liquid crystals have a certain gradient, so that the infrared reflection bandwidth is widened.

Description

technical field [0001] The invention relates to the technical fields of optics and liquid crystal devices, in particular to an electric response infrared reflective device and a preparation method thereof. Background technique [0002] In order to achieve the purpose of sunlight transmission and reflection, the glass is generally coated so that light of a certain wavelength in the light can be reflected or transmitted by the glass window. Coated glass is coated with one or more layers of metal, alloy or metal compound films on the surface of the glass to change the optical properties of the glass and achieve the purpose of reflecting or transmitting light of a certain wavelength. [0003] According to different reflective and light-transmitting requirements, films of different materials can be used. Coating one or more layers of thin films composed of metals such as chromium, titanium or stainless steel or their compounds on the surface of the glass makes the product rich i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1334G02F1/137G02F1/1339G02F1/1333
CPCG02F1/1333G02F1/1334G02F1/1339G02F1/137G02F1/13345G02F1/133365G02F1/1347G02F1/13725G02F2202/043G02F2203/02G02F2203/48G02F1/1337G02F1/13473G02F2203/055G02F2203/11G02F2203/58G02F1/13478G02F1/133738G02F1/133746
Inventor 胡小文曾伟杰李琛周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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