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Electrochromic dimming thin film and preparation method thereof

An electro-dimming and thin-film technology, which is applied in the field of dimming films, can solve problems such as lack of dimming effect, blurred imaging, and influence of light transmittance, and achieve excellent linear light transmittance, promote electrical conductivity, The effect of excellent dimming effect

Pending Publication Date: 2022-02-25
苏州瑞纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the resistance is increased, the calorific value of the ITO conductive film is also increased during use, which increases the surrounding temperature. The ITO conductive film can make the liquid crystal display work normally at low temperature and display images instantly, which greatly improves the working temperature of the liquid crystal display. range, but its overall driving voltage is high, the surface resistance and its uniformity are poor, and it consumes a lot of energy. It is easy to accumulate heat in the film layer and damage the film. Fuzzy, which affects the light transmittance, and it does not have dimming effect

Method used

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  • Electrochromic dimming thin film and preparation method thereof
  • Electrochromic dimming thin film and preparation method thereof
  • Electrochromic dimming thin film and preparation method thereof

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Embodiment 1

[0033] see figure 1 , the present embodiment provides that the liquid crystal film 3 is formed by sandwiching and rolling the liquid crystal layer by two substrates 1, and the liquid crystal layer is fully homogenized and densely formed, and the ITO conductive film layer 2 and the liquid crystal film 3 are used to adjust light and conduct electricity together to improve The conductive properties of the dimming film can reduce the driving voltage and promote energy saving. The outer substrate 1 can provide reliable protection for the conductive structure of the inner layer. The liquid optical glue LOCA4 is used to coat the edge of the substrate 1 and the liquid crystal film 3 to promote the tight connection of the structure. Good strength.

Embodiment 2

[0035] An electroluminescent thin film and a preparation method thereof, specifically comprising the following steps:

[0036] Step 1: Surface treatment of the substrate:

[0037] The substrate was ultrasonically cleaned with hydrogen peroxide, ultrapure water, acetone, and ethanol for 5 minutes, and then dried to obtain the cleaned substrate;

[0038] Step 2: Perform magnetron sputtering on the single-sided layer of the substrate obtained in step 1 to plate a conductive film layer:

[0039] Production of target materials: After uniform particle size indium tin oxide powder, nickel oxide powder, tungsten oxide powder, and lithium oxide powder are uniformly mixed by wet method, the mass ratio of indium tin oxide powder, nickel oxide powder, tungsten oxide powder, and lithium oxide powder The temperature is 35:25:20:10, and the prefabricated composite powder is prepared by raising the temperature. The prefabricated composite powder is granulated and screened, and then the compo...

Embodiment 3

[0044] The difference between this embodiment and embodiment 2 is:

[0045] In step 2: the mass ratio of indium tin oxide powder, nickel oxide powder, tungsten oxide powder, lithium oxide powder is 40:22:20:8; Press sintering; the sintering temperature is 1100°C, and the sintering time is 3h.

[0046] In step 3: the mass ratio of its acrylic liquid crystal resin monomer, acrylate monomer, vinyl ether monomer, ethylene glycol phenyl ether monomer, photoinitiator, promotor, liquid crystal monomer and spacer is 30: 25:10:7:0.8:0.3:26:0.9;

[0047] Step 4: the applied voltage of the electric field is 80V, the frequency of the applied voltage is 600Hz, the intensity of ultraviolet light is 60mw / cm2, and the irradiation time of ultraviolet light is 1200s.

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Abstract

The invention relates to a preparation method of an electrochromic dimming thin film. The preparation method comprises the following steps of: 1, carrying out surface treatment on a substrate; 2, carrying out magnetron sputtering on each surface layer of the substrate obtained in the step 1 to plate a conductive film layer; 3, fully and uniformly mixing an acrylic acid liquid crystal resin monomer, an acrylate monomer, a vinyl ether monomer, an ethylene glycol phenyl ether monomer, a photoinitiator and an accelerant in proportion, adding a liquid crystal monomer, uniformly mixing and stirring an obtained mixture with a spacer, and performing defoaming to obtain a liquid crystal layer; and 4, clamping the liquid crystal layer in the step 3 through the two substrate film coated surfaces in the step 2, rolling the outer side surface layer of the substrate to enable the liquid crystal layer to form a liquid crystal thin film, applying an electric field to the liquid crystal thin film, carrying out ultraviolet curing on the liquid crystal thin film, and coating the edge part of the substrate with liquid optical cement (LOCA) so as to cover the edge part. The prepared and formed dimming thin film is low in driving voltage, has an excellent dimming effect on light transmittance, and is compact in forming, stable in whole structure and good in compatibility.

Description

technical field [0001] The invention relates to the technical field of light-adjusting films, in particular to an electro-light-adjusting film and a preparation method thereof. Background technique [0002] When the electric field is applied, that is, the working voltage is applied, the light-adjustable film can show a transparent state, and after the electric field is removed, it will show a scattering state, which refracts and reflects light, hinders the light from propagating along the original path, and makes the image blurred. The dual requirements of glass penetration and privacy protection, even when it is opaque, the lighting is still good, which cannot be achieved by all curtains, and it has an insulating and reflective effect on the heat of light, making the room warm in winter and cool in summer, environmentally friendly and energy-saving. Generally, dimming films use the beneficial optoelectronic properties of liquid crystals to shield light in the transparent ra...

Claims

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Application Information

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IPC IPC(8): C23C14/35G02F1/137G02F1/15C09K19/38C23C14/08
CPCC23C14/35C23C14/086G02F1/13718G02F1/15C09K19/3852C09K19/3842C09K19/3814
Inventor 刘延宁陈珂珩
Owner 苏州瑞纳新材料科技有限公司
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