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    3D glass cover surface AF, AG, AR coating characteristics

    Date: 2021-03-23
    Views: 7

    3D glass cover coating is like a woman's makeup, not only can make the glass cover and back panel more beautiful, but also can play the role of anti-oxidation, acid and alkali resistance, anti-UV. Therefore, the cell phone 3D glass coating is very necessary! However, the glass coating is not only one type. Different coatings play different roles, this article focuses on AF, AG, AR coating. I believe you will not be confused after reading.


    1. Explanation of name and principle


    (1). AF ---- Anti-fingerprint. General SiO2 + AF material (DON, M4, Dow Corning AF material), generally using vacuum evaporation coating method.


    Principle: AF anti-fingerprint glass is based on the lotus leaf principle, the outer surface of the glass coated with a layer of nano-chemical materials. It makes the surface tension of the glass to a minimum, and the contact area between dust and glass surface is reduced by 90%, so that it has a strong hydrophobic, anti-oil, anti-fingerprint ability; that’s why the video screen glass panel maintains a bright and shiny effect for a long time.


    Applicable materials: all kinds of glass or organic glass PC, PMMA, PET...


    (2).AR - anti-reflection: by increasing the glass (screen) transmittance, reduce the glass (screen) reflectivity to achieve the purpose of increasing transparency. The choice of materials is relatively large, generally with high and low refractive index materials cross-stacked plating on, can be used vacuum evaporation plating can also be used magnetron sputtering plating.


    Principle: When light is shot from light sparse material to light dense material, the reflected light will have a half-wave loss, after the glass is coated with AR film, the reflected light on the surface than the difference in the light range of the reflected light on the surface before the film is exactly half a wavelength difference, the reflected light on the two surfaces before and after the film eliminates, which is equivalent to an increase in the energy of transmitted light. And can be coated on both sides of the glass at the same time to make the two sides of the glass at the same time to reduce the reflection effect.

    Applicable substrates: glass, acrylic (PMMA), PC, CR39 and other organic glass.


    (3).AG --- anti-glare: It is the surface of the glass for single- or double-sided special treatment to achieve the effect of multi-angle diffuse reflection, so as to improve the viewing angle of the screen, reduce the interference of ambient light, reduce screen reflection. It can be sprayed + baked method to form a film, using a colloidal solution of SiO2 or the like.


    Principle: Through light scattering and diffuse reflection, reduce reflection and achieve the purpose of anti-glare, anti-blinding, to create a clear and transparent visual space, so as to have better visual enjoyment.


    Let's talk about the process of anti-fingerprint treatment.


    Pre-treatment: use weak alkaline cleaning agent or solvent to remove oil, water and other stains on the surface of the substrate, better effect by ultrasonic cleaning.

     Plating the AF solution on the product surface to form a film.

    Baking: remove the glass after spraying and put it into the oven (120 ℃, 30 minutes), depending on the specific requirements and product conditions to adjust to the best.

    Cleaning: After the product is cleaned, the finished product is packed.


    The three coating processes are similar, only the way of coating and the liquid has changed, such as AR process flow.

    Steps are followed:

    Cleaning → drying → coating → curing → high temperature tempering


    3. Characteristics and application areas


    1. AF coating product characteristics:

    1Anti-fouling: prevent fingerprints and oil from adhering easily and erase easily.

    2Anti-scratch: smooth surface, comfortable to the touch, not easy to scratch.

    3Thin film layer: excellent optical properties, does not change the original texture.

    4Abrasion resistance: with true degree of wear resistance performance

    AF coating product applications: cell phones, flat panels, TVs, LED and other glass displays


    2. AR coating product characteristics.

    (1) high penetration: nano-level optical coating technology can increase the light transmission of ultra-white glass by 2-3%

    (2) Durable: it can be maintained in harsh environments for 25 years

    (3) Dew condensation prevention: dramatically inhibit dew condensation on photovoltaic glass

    (4) Anti-scratch hardness: the coating can increase 1H hardness and anti-scratch effect

    (5) Resistance to water: water droplets falling on the above water droplet angle of > 110 °, the panel in the tilt state automatically slide off, and does not affect the visual

    (6) Easy to clean.


    AR coating product application areas: front and rear windshields of cars, solar photovoltaic industry (solar panels), range hoods, outdoor large advertising screens, etc.

    (1) Reflect infrared light: reduce the infrared light penetration on the glass surface to reduce the infrared light entering the room

    (2) Enhanced light transmission: reflect infrared light while enhancing the transmission of other light sources, without affecting the indoor lighting effect

    (3) Anti-glare: The light from the light source is diffusely reflected (the essence of AG coating) to change the visual stimulation of the reflective glare to the observer.


    AG coating products application areas.

    (1) Mirror frames for valuable paintings and calligraphy in senior galleries and art museums, so that the paintings and pictures are preserved for a long time and never fade.

    (2) Museums, archives and other valuable cultural relics protection.

    (3) Electronic whiteboard, DLP/LCD touch screen, DLP/LCD TV wall. With high light transmission rate and anti-glare function.

    (4) Precision instrument screen, medical equipment window, LCD monitor window, electronic product window, etc.

    (5) KFC, McDonald's and other restaurants, the name of goods clearly visible, will not see the light reflection phenomenon.

    (6) Airport, hotel signage, instruction screen, etc.

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