Enhancing Visibility: The Power of Coatings for LCD Glass


Apr 15, 2024

While LCD displays offer exceptional performance and vibrant visuals, they often encounter a common adversary: glare and reflections that hinder visibility, especially in bright sunlight. To combat this challenge, the integration of anti-glare (AG) and anti-reflective (AR) coatings has become a game-changer.

Understanding Anti-Glare (AG) and Anti-Reflective (AR) Coatings

Let's begin by demystifying the subtle yet significant differences between anti-glare and anti-reflective coatings:

Anti-Glare (AG) Coating:

AG treatments give the display a matte finish by mechanically etching the LCD glass to create a tiny, uneven landscape. When light falls upon this rough surface, it scatters and diffuses, reducing glare and minimising surface reflections.

Anti-Reflective (AR) Coating:

On the other hand, anti-reflective coating acts like an invisible shield on your LCD screen. This coating creates interference between light reflected off the front surface and light coming from behind, effectively cancelling out reflections. The result is a clearer and brighter image without the need for additional power.

Anti Glare (AG) or Anti-Reflective (AR) coatings on outdoor displays can improve readability

Benefits of AG and AR Coatings for Outdoor Displays

  • Improved Visibility: AG and AR coatings significantly reduce glare and reflections, making it easier to view the display content even in bright sunlight. 
  • Enhanced Contrast: By minimising surface reflections, these coatings enhance contrast, allowing colours to pop and details to become more vivid. 
  • Energy Efficiency: Helping achieve a brighter display without increasing power consumption.

The Role of Anti-Fingerprint (AF) Coatings

Displays with anti-reflective coatings can easily become marked with fingerprints, detracting from the viewing experience. Try to rub off those fingerprints and it usually results in a screen full of smudges which is far from appealing. Here’s where Anti-Fingerprint (AF) coatings play a crucial role.

Not only do they boast hydrophobic qualities making water rejection in touch display applications easier to achieve, they also includes oleophobic properties which provide a barrier to oily substances that fingerprints leave behind. Wiping with a suitable cloth will help restore the touch surface back to its original visual clarity.

anti-fingerprint coatings help make the display smudge free

Elevating Outdoor Display Performance

In summary, these coatings collectively enhance visibility, contrast, and colour accuracy, while also ensuring that the display remains free from unsightly smudges and water damage.

So, the next time you find yourself gazing at an outdoor digital sign or interacting with a kiosk under the sun, take a moment to appreciate the power of these coatings, working silently to provide you with a crystal-clear, vibrant display that defies the challenges of the great outdoors.

Further reading: Anti-Glare vs Anti-Reflective - what is the difference

To find out more about designing a rugged product for the unforgiving outdoors, download our free guide.