What is the difference between anti-reflective coatings and anti-glare treatments on the touch screens
Are you looking for a capacitive touch screen for your new product?and do not know what kind of surface treatment do you need?check this article,i am sure it will help you figure out this problem.
The basic difference between anti-reflective coatings and anti-glare treatments on the touch screens is the capacity at which they diffuse or eliminate waves of light in all spectrums from UV to long-wave infrared.
Anti-glare solutions utilize diffusive properties to fragment the reflected light off the surface. Diffusion works by reducing the consistency of the reflected image, making these undesirable reflected images blurred or fuzzy to the eye. This reduces the reflected image’s intrusion of the intended image display. This is also known as constructive interference of light. Constructive interference occurs at any location along the substrate where the two interfering light waves have a displacement in the same direction.
Anti-reflective solutions diffuse both external and internal light waves that combine to negate the light transmitted through the substrate. As light passes from one medium such as air to another, likely an optical substrate, the difference between the refractive indices in the corresponding mediums create transitional light wave differences which invariably amplify the amount of light reflected. The reflected light accumulates and can greatly reduce the acuity of the display substrate. This accumulation of light and negated display acuity leads to displayed information becoming indistinguishable. This method of light interference is referred to as destructive interference of light.
To achieve destructive interference and improve acuity while reducing reflection North American Coating Laboratories vacuum deposits multiple layers of dielectric materials with varying refractive indices. The layers are deposited at varying thickness as well to aid in the interference of numerous light beams. When we are given the operating wavelength we can design our coatings to offer very low reflectance and optimal light transmission over the specified ranges. This can be accomplished at a very finite wavelength or a very broad wavelength within the visible light spectrum.
So those are the technical differences, but you may still be wondering how these two solutions are different? In general terms anti-glare coatings use either diffuse particles or etching on the substrate’s surface, while anti-reflective coatings utilize film structure over the substrate surface. Anti-glare is typically visible to the human eye while anti-reflective coatings typically exhibit a soft blue/green hue when deposited and is essentially invisible to the human eye minus a soft color.
To determine which solution is applicable to your application there are two rules of thumb. If your application requires high visible light transmission and there will be an air medium between your displayed information and the optical substrate then an anti-reflective coating is probably your ideal solution. In the case that your application does not have an air gap between your displayed information and there is no external light of concern than an anti-glare solution may be ideal.
Because of the difference in antiglare and antireflection surface treatments, it is possible to apply them independently or jointly to the display. The choice of treatments must take careful account of the environment in which the display will be viewed. For locations which have a few highly localized sources of light, a gloss of 60 with AR coating is recommended. In other applications where the light source is more diffuse (such as an outdoor kiosk), a more highly polished surface will generally be more desirable. The final choice can only be made by an on-site evaluation of displays with alternative finishes and under a variety of lighting conditions from full light to full nighttime brightness.
Reshine provides Projected(Surface) Capacitive Touch Screen from 2.4 inch to 32 inch ,and with different structure,such as G+G/P+G/G+F+F,and with USB/Control Board,IIC /COF interface,and also different surface coating solutions:Anti-glare,Anti-reflective,Anti-fingerprint/Waterproof.
Resistive Touch Screen : 4-wire / 5-wire / 3 layers/4 layers from 1.44 inch to 17 inch.
Should any of these items be of interest to you, please let us know. We will be happy to give you a quotation upon receipt of your detailed requirements.
Reshine Display (HK) Technology Co., Limited
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ProductsCapacitive touch screen Resistive touch screen TFT LCD Display LCD with Capacitive touch screen LCD with Resistive touch screen