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Multi-stable electric response intelligent window and preparation method thereof

An electric response, smart window technology, applied in windows/doors, door/window protection devices, optics, etc., can solve problems such as fading, affecting the stability of dye-doped smart windows, and smart windows cannot be colorless and transparent, and achieve Rich patterns and simple effects

Pending Publication Date: 2018-08-17
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the dye molecules will undergo changes such as fading under the action of ultraviolet light, which will affect the stability of the dye-doped smart window; because the dye molecules cannot achieve the ideal orientation state, the dye molecules still have absorption when the dye-doped smart window is in a transparent state. Behavior, so that the smart window cannot achieve a colorless and transparent state

Method used

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  • Multi-stable electric response intelligent window and preparation method thereof
  • Multi-stable electric response intelligent window and preparation method thereof
  • Multi-stable electric response intelligent window and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment 1

[0028] see figure 1 , the present embodiment provides a multi-stable electrical response smart window, comprising a light-transmitting conductive substrate 10, a parallel alignment layer 2, a positive polymer stabilized cholesteric liquid crystal layer 3, a positive cholesteric phase The liquid crystal layer 4 and the second light-transmitting conductive substrate 11, the first light-transmitting conductive substrate 10 and the second light-transmitting conductive substrate 11 are packaged into liquid crystal cells by UV glue doped with spacers 5, and are electrically connected to the power supply respectively.

[0029] see figure 2 , when the access voltage U=0V, the liquid crystal molecules in the positive polymer stabilized cholesteric liquid crystal layer 3 and the positive cholesteric liquid crystal layer 4 are arranged in the cholesteric phase parallel to the light-transmitting conductive substrate. At this time, the smart window only It can reflect a part of visible l...

Embodiment 2

[0040] Under the yellow light environment, take 10 mass parts of achiral polymerizable monomer HCM009, 20 mass parts of right-handed chiral dopant R811, 2 mass parts of photoinitiator Irgacure-819, 68 mass parts of positive Liquid crystal E7 was placed in a brown bottle, and 1 mL of dichloromethane was added to the brown bottle, stirred at room temperature for 30 minutes, then heated at 60°C for 8 hours, and the dichloromethane was completely evaporated to prepare mixture A; 20 parts by mass of The right-handed chiral dopant R811, 80 parts by mass of positive liquid crystal E7 were placed in a brown bottle, 1 mL of dichloromethane was added to the brown bottle, stirred at room temperature for 30 min, and then heated at 60°C for 8 h, the two Methyl chloride was evaporated completely to form mixture B.

[0041] Take a piece of light-transmitting conductive substrate (such as ITO conductive glass), after cleaning, ozone oxidation, spin-coating, and rubbing, make a light-transmitt...

Embodiment 3

[0043] Under the yellow light environment, take 2 mass parts of achiral polymerizable monomer HCM009, 8 mass parts of right-handed chiral dopant R811, 1 mass part of photoinitiator Irgacure-819, 89 mass parts of positive Liquid crystal E7 was placed in a brown bottle, and 1 mL of dichloromethane was added to the brown bottle, stirred at room temperature for 30 minutes, and then heated at 60°C for 8 hours to completely evaporate the dichloromethane to prepare mixture A; take 8 parts by mass of The right-handed chiral dopant R811, 92 parts by mass of positive liquid crystal E7 were placed in a brown bottle, 1 mL of dichloromethane was added to the brown bottle, stirred at room temperature for 30 min, and then heated at 60°C for 8 h, the two Methyl chloride was evaporated completely to form mixture B.

[0044] Take a piece of light-transmitting conductive substrate (such as ITO conductive glass), after cleaning, ozone oxidation, spin-coating, and rubbing, make a light-transmittin...

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Abstract

The invention discloses a multi-stable electric response intelligent window and a preparation method thereof. The multi-stable electric response intelligent window comprises a first light-transmissiveconductive substrate, a parallel alignment layer, a positive polymer-stabilized cholesteric phase liquid crystal layer, a positive cholesteric phase liquid crystal layer and a second light-transmitting conductive substrate which are stacked in sequence. According to the multi-stable electric response intelligent window, by changing the magnitude of access voltage, a colored transparent light transmission state, a colored blur light transmission state, a colorless blur light transmission state, a colorless transparent light transmission state and other diversified light transmission states areachieved, so that various demands in people's work and life are met. The multi-stable electric response intelligent window has the advantages of being easy to manufacture, rich in mode and capable ofsaving energy and protecting the environment and has a good application prospect in the fields of car window glass, home glass window, glass curtain walls and the like.

Description

technical field [0001] The invention relates to the field of construction and household life, in particular to a multi-stable electric response intelligent window and a preparation method thereof. Background technique [0002] Privacy protection smart windows based on liquid crystal materials can adjust the reflection, scattering and transmission of light according to people's needs, thereby balancing the needs of privacy protection and lighting, and can obtain richer colors by doping dyes and other substances. Taking smart windows as an example, the rotation of liquid crystal molecules is controlled by an external voltage to drive the rearrangement of dye molecules, so as to realize the transmission, scattering or absorption of sunlight to meet people's needs. [0003] However, the dye molecules will undergo changes such as fading under the action of ultraviolet light, which will affect the stability of the dye-doped smart window; because the dye molecules cannot achieve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/137
CPCG02F1/137G02F1/13775G02F1/13718E06B9/24E06B2009/2464G02F1/139
Inventor 胡小文孙海涛赵威周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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