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An electric response switchable glass

A dimming glass, electrical response technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of easy interference with navigation and communication systems, difficult to build home and life with coated glass, difficult to popularize and widely used, etc.

Active Publication Date: 2018-08-21
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the people who are inside the coated glass at the same time have a great influence on the visibility outside the vehicle, and once the coated glass is structured, its optical performance will not be reversibly adjusted according to environmental changes or personal preferences, which is difficult to meet The needs of the public to change the light and dark environment in the car at any time
Similarly, on the premise that the coated glass used in existing windows can reflect light of a certain wavelength in the visible light after molding, once the coated glass is formed, light and shade adjustment cannot be realized.
In addition, most of the reflective materials used in coated glass are based on ion crystals doped with metals and metal oxides. The reflective materials that make up this kind of glass are easy to interfere with navigation and communication systems. This shortcoming makes it difficult for coated glass to be used in construction, home and life. , it is also difficult to popularize and widely apply in the world

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Clean the glass substrate.

[0030] The translucent glass substrates were cleaned with acetone, deionized water, and isopropanol in an ultrasonic cleaner for 10 minutes each; finally, they were placed in an oven and dried at 120°C for 30 minutes.

[0031] 2) Preparation of polyimide vertical alignment layer.

[0032]Use N-methylpyrrolidone (NMP) and ethylene glycol butyl ether (BCS) to dilute the DL-4018 polyimide solution at a ratio of 4:1 to a solid content of 2%. Then spin-coat the diluted polyimide solution onto a 30mm×30mm glass substrate at a spin-coating speed of 2500r / min for 1min to form a layer of polyimide film on the glass substrate; The substrate is prebaked and cured, the prebaking temperature is 90˚C, and the baking time is 90s; the curing is divided into two steps: first set the oven temperature at 105˚C, bake for 30min, and then raise the temperature to 250˚C , Constant temperature 1.5h. After the above steps, a polyimide alignment layer with a th...

Embodiment 2

[0038] 1) Clean the glass substrate

[0039] Use acetone, deionized water, and isopropanol to clean in an ultrasonic cleaner for 10 minutes in sequence; finally, dry in an oven at 120°C for 30 minutes.

[0040] 2) Preparation of polyimide vertical alignment layer

[0041] Use N-methylpyrrolidone (NMP) and ethylene glycol butyl ether (BCS) to dilute the DL-4018 polyimide solution at a ratio of 4:1 to a solid content of 2%. Then spin-coat the diluted polyimide solution onto a 30mm×30mm glass substrate at a spin-coating speed of 2500r / min for 1min to form a layer of polyimide film on the glass substrate; The substrate is prebaked and cured, the prebaking temperature is 90˚C, and the baking time is 90s; the curing is divided into two steps: first set the oven temperature at 105˚C, bake for 30min, and then raise the temperature to 250˚C , Constant temperature 1.5h. After the above steps, a polyimide alignment layer with a thickness of about 40nm can be formed on the glass substr...

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Abstract

The invention discloses an electric response switchable glass, which comprises two light-transmitting substrates arranged oppositely, a power supply component and a polymer-dispersed liquid crystal layer filled between the two light-transmitting substrates, and the polymer-dispersed liquid crystal layer It is a mixture of material molecules without electrical response characteristics and negative liquid crystal molecules. Visible light is transmitted from the polymer dispersed liquid crystal layer, and the two light-transmitting substrates are electrically connected to the two poles of the power supply component; After the optical substrate is connected to the voltage, the negative liquid crystal can be controlled to turn. Since the material molecules do not have electrical response characteristics and will not turn, the material molecules will prevent the negative liquid crystal from turning, so that the reverse liquid crystal The molecules are arranged in multiple domains, so that the electro-responsive dimming glass changes from a light-transmitting state to a light-scattering state, and the electro-responsive dimming glass can realize the adjustment of the light and shade of the glass by energizing and de-energizing.

Description

technical field [0001] The invention relates to glass materials, in particular to an electric response dimming glass. Background technique [0002] Most of the dimming glass adopts the method of coating on the glass surface. According to different reflection and light transmission requirements, films of different materials can be used so that light of a certain wavelength in the light can be reflected or transmitted by the glass window, so as to realize sunlight. for transmission and reflection purposes. For example, some car window glass has a coating layer on the surface of the glass, and the coating layer has a high blocking effect on visible light, so it has a better concealment effect on the interior of the car. However, people who are inside the coated glass at the same time have a great influence on the visibility outside the vehicle, and once the coated glass is structured, its optical performance will not be reversibly adjusted according to environmental changes or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1334G02F1/1333
CPCG02F1/1333G02F1/1334G02F1/13712
Inventor 胡小文刘延国袁冬刘丹青迪克·杨·波尔周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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