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CDS takes touchscreens to the next level of safety with anti-bacterial films

19 June 2020

There have been numerous reports about the cleanliness of using a touch screen and the COVID-19 pandemic has raised this even further. Touch screens are clearly here to stay, but it is important to ensure that they are as safe to use a possible.

There are different approaches to how to give the user more protection. Like many other suppliers, CDS have looked at the air-touch approach. This is where the touch controllers are tuned so the touch is activated when the fingers hover slightly over the front surface, as the touch point can be calibrated 5mm away from the glass. Although an interesting concept, CDS dismissed this – if someone is about to order a hamburger or coffee, the time vs motor control will not be that accurate. Ultimately, CDS felt in the majority of cases the finger will still touch the surface of the screen.
 
CDS investigated applying a silver nanoparticle coating which is known for its ability to kill bacteria and other microbes by rupturing the bacteria’s cell wall and destroying its structure. This is effectively the same as a soaping or detergent effect. CDS has anti-bacterial test results to BS EN ISO 22196 available, showing a positive resistance against E-Coil ATCC 8739, MRSA NCTC 12493, Klebsiella Pnuemoniae ATCC 4352 and Streptococcus pyogenes ATCC 19615 at various incubation times (30min/1 hr/24 hrs). These test results are available on request.
 
Although testing is not possible against a virus, there are scientific papers suggesting that silver nanoparticles are active against several type of viruses. (Note that without proven tests CDS do not promote this as an anti-viral product.) Links to these papers are available on request

CDS can now offer this silver nanoparticle coating protection in two formats; firstly, as a new build with the coating applied to the surface of the glass by the glass manufacturer. If you have an existing touchscreen component or monitor supply from either CDS or another supplier, CDS will support you with a protected upgrade. If you are purchasing from another source, all CDS require is a drawing or a sample of your current product. The company have the ability to rapidly produce a form fit function upgraded product with the CDS-ABF technology.
 
Secondly, CDS can supply the CDS-ABF technology in a film format which can be applied to existing products, either as a factory upgrade or even onsite installation. The film is available in two formats, both have a 2H anti-scratch, anti-finger print surface finish (naturally with the silver nanoparticle anti-bacterial coating), but the surface finish can be either optically clear (OC) or anti-glare (AG). 
 
The finished film is a 0.12mm thick including base silicone adhesive, PET layer and surface hard coat layer with silver nanoparticles. It is supplied with a rear release film for simple application and a surface protection tape. Each film is precisely CNC cut to the exact shape and size, and can include radiused corners, cut-outs etc. CDS can supply this for all shapes of display including traditional formats as well as round screens and panoramic stretch screens.
 
For more information contact the touch screen specialists at CDS. Please visit https://crystal-display.com/products/anti-bacterial-touchscreeen-films/ for more information.


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