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An electronically controlled smart window, its preparation method, and its light adjustment method

A smart window and electric control technology, which is applied in the field of green building/decoration materials, can solve the problems of controllability and response speed that are difficult to break through, and achieve the effect that the control rate can be adjusted independently, easy to prepare, and convenient to drive

Active Publication Date: 2020-08-18
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if responsive liquid crystal materials such as electro-, thermo-, and photo-response are used to adjust light transmission and reflection in specific wavelength bands, they are still limited by the liquid crystal material’s responsiveness, discoloration range, and stimulation conditions. Difficult to break through

Method used

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  • An electronically controlled smart window, its preparation method, and its light adjustment method
  • An electronically controlled smart window, its preparation method, and its light adjustment method
  • An electronically controlled smart window, its preparation method, and its light adjustment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Electrically controlled smart windows, such as figure 1 , figure 2 shown, including:

[0060] The dimming area between two opposing light-transmitting substrates 1, power supply components 2, and the light-transmitting substrate, the dimming area is divided into several dimming units by pixel walls 3, and the dimming units are closely arranged in a grid ; One pole of the power supply assembly 2 is connected to the pixel wall 3, and the other pole is connected to the light-transmitting substrate corresponding to the center of each dimming unit;

[0061] And liquid crystal polymer particles and filling liquid filled between the two light-transmitting substrates, the surface of the liquid crystal polymer particles is charged.

[0062] The electronically controlled smart window is prepared according to the following steps:

[0063] S1. Take two light-transmitting substrates, and coat vertical alignment layers on the inner surfaces of the two light-transmitting substrate...

Embodiment 2

[0079] The structure of the electronically controlled smart window is the same as that of Embodiment 1.

[0080] The electronically controlled smart window is prepared according to the following steps:

[0081] S1. Take two light-transmitting substrates, and coat vertical alignment layers on the inner surfaces of the two light-transmitting substrates respectively;

[0082] S2. Place the surfaces of two light-transmitting substrates coated with the vertical alignment layer inwards in parallel, and seal them with a spacer in between to form a liquid crystal cell;

[0083] S3. Fill the liquid crystal cell with a solution mixed with a photoinitiator, a polymerization inhibitor, a nematic liquid crystal, and a chiral liquid crystal (the components and contents are shown in Table 2), and cure with ultraviolet radiation to obtain a liquid crystal film;

[0084] S4, taking out the liquid crystal film, and making liquid crystal polymer particles with uniform size through physical pulv...

Embodiment 3

[0098] The structure of the electronically controlled smart window is the same as that of Embodiment 1.

[0099] The electronically controlled smart window is prepared according to the following steps:

[0100] S1. Take two light-transmitting substrates, and coat vertical alignment layers on the inner surfaces of the two light-transmitting substrates respectively;

[0101] S2. Place the surfaces of two light-transmitting substrates coated with the vertical alignment layer inwards in parallel, and seal them with a spacer in between to form a liquid crystal cell;

[0102] S3, filling the liquid crystal cell with a solution mixed with a photoinitiator, a polymerization inhibitor, a nematic liquid crystal, and a chiral liquid crystal (components and contents are shown in Table 3), and heating and curing to obtain a liquid crystal film;

[0103] S4, combined with mask plate or template method to directly produce liquid crystal polymer particles;

[0104] S5, treating the liquid c...

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Abstract

The invention discloses an electronically controlled intelligent window, comprising: two opposite light-transmitting substrates, a power supply component, and a dimming area between the light-transmitting substrates, the dimming area is divided into several dimming units by pixel walls , the dimming units are closely arranged in a grid; one pole of the power supply component is connected to the pixel wall, and the other pole is connected to the corresponding light-transmitting substrate at the center of each dimming unit; the height of the liquid crystal filled between the two light-transmitting substrates Molecular particles and filling liquid, the surface of the liquid crystal polymer particles is charged. The present invention is based on the Bragg reflection characteristics of the cholesteric liquid crystal polymer helix, and adopts liquid crystal polymer micron particles that are charged on the surface and reflect light in a specific band as the basic reflector, and has the advantages of easy preparation, low cost, stable performance and no interference with electromagnetic signals significant advantages.

Description

technical field [0001] The invention relates to the field of green building / decoration materials, in particular to an electronically controlled intelligent window based on charged polymer suspended particles, a preparation method thereof, and a light adjustment method of the electrically controlled intelligent window. Background technique [0002] With the increasing emphasis on environmental protection and energy saving, the rational use of energy and the research and development of energy-saving products have made significant progress. In this context, in the early 1980s, it was first proposed to apply electrochromic materials to energy-saving lighting systems such as buildings, automobiles, and airplanes to form a "smart window" that can dynamically adjust the transmittance of solar radiation. Until now, the research and application of smart windows is still one of the research hotspots. [0003] At present, smart windows are mainly divided into three categories: smart w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/137
CPCG02F1/13718G02F1/167G02F2001/1678G02F1/16761C09K19/38C09K2019/2078C09K2019/0448C09K2019/528C09K19/54C09K19/586G02B26/02G02F1/166G02F1/1333G02F2201/12G02F2202/023
Inventor 李皓郭泽堃李楠周国富
Owner SOUTH CHINA NORMAL UNIVERSITY