Anti-reflection and self-cleaning glass and manufacturing method thereof

Abstract

The invention discloses anti-reflection and self-cleaning glass and a manufacturing method of the glass. A nanocone array structure with sub-wavelength is formed on an impressing material on the glass surface by a nanometer impressing process based on a band soft mould or a nanocone array structure with sub-wavelength is etched on the glass surface by a hard mask, a nanometer impressing with an impressing material based on a band soft mould and a hard mask transferring etching process. The anti-reflection and self-cleaning glass can be applied to the fields of solar battery panels, glass curtain walls, automobile windshields, optical elements and instruments, large-size high-definition panel displays, infrared detectors and the like. The anti-reflection and self-cleaning glass disclosed by the invention has the advantages of high anti-reflection and self-cleaning performance, good durability, high stability, strong severe environment adaptation and low cost, and in particular, the efficient and low-cost mass production of the anti-reflection and self-cleaning glass with extra-large area can be realized.

Description

technical field [0001] The invention belongs to the technical field of glass surface processing and micro-nano manufacturing, and in particular relates to an anti-reflection and self-cleaning glass and a manufacturing method thereof. Background technique [0002] Anti-reflection (anti-reflection) and self-cleaning glass can effectively reduce the reflection of the glass itself and increase the transmittance of the glass (that is, reduce the full-spectrum reflection of incident light, increase transmission, and improve transparency; reduce the mirror effect of the glass surface, with anti-glare function), and has the advantages of anti-pollution and self-cleaning, it can effectively improve solar panels, glass curtain walls, car windshields, optical components (lenses, microscope lenses, camera lenses, etc.), flat panel displays (touch screens, TV screen, smart phone screen, etc.) and other products’ performance and quality. For example, the use of anti-reflection and self-c...

AI Technical Summary

Problems solved by technology

However, these structures and methods usually make the glass only have a single function of anti-reflection or self-cleaning. On the one hand, it is difficult to have the functions of anti-reflection and self-cleaning at the same time.

And there are still many defects and deficiencies

For example, multi-layer coatings face the following problems: ① Due to the introduction of different materials, thermodynamic mismatch or poor adhesion reduce its stability; ② Although this kind of film usually has better anti-reflection performance in a certain wavelength band, However, it cannot reduce the loss of reflected light in a wide range of wavelengths; ③The types of materials in nature are limited and cannot meet actual needs, especially the requirement of continuous refractive index, such as: the refraction of magnesium fluoride, silicon nitride, and silicon dioxide The coefficients are all around 1.4, and there are almost no materials with a refractive index between 1 and 1.2; ④The two main techniques for preparing anti-reflective films—physical vapor deposition (PVD) and chemical vapor deposition (CVD) have high production costs

There are also many problems such as poor adhesion, poor timeliness, and poor adaptability to the environment when pasting anti-reflective films on the surface.

Therefore, there are many problems in the traditional multi-layer coating and anti-reflection film sticking on the surface: the adhesion of the film layer to the substrate surface and the adhesion between the film layers; the chemical corrosion resistance, durability and stability of the film layer Sexuality problems; expansion mismatch and condensation delamination problems caused by different thermal expansion coefficients; component permeation and diffusion problems between film layers and between film layers and substrates; cannot find suitable film materials; Band reflectivity; poor adaptability to ambient temperature and humidity, there are problems such as easy to fall off and thermal impact

[0004] Therefore, the existing solutions and manufacturing methods are still difficult to meet the performance and actual production requirements of anti-reflection and self-cleaning glass, which has become a bottleneck restricting the widespread promotion and application of anti-reflection and self-cleaning glass. There is an urgent need for clean glass structures and methods for their efficient and low-cost mass production

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