Vandal-proof Touchscreens

Does your display application require a touchscreen that can withstand the challenges of vandal abuse? When your touchscreen is subjected to unattended public access interactivity, vandal proofing can be a constant battle. Unfortunately, there is no simple answer when seeking a vandal proof solution.

However, there are means of increasing resistance to vandal abuse which can generally be addressed in three broad areas: impact protection, scratch/abrasion protection and liquid ingress protection.

Impact and scratch/abrasion damage are minimized by use of added glass top surfaces. Polymers, such as polycarbonate which are highly impact resistant, provide additional protection against impact, scratch and abrasion destruction. Optical bonding, provided by Planar Systems, fills the gap between the protective glass and LCD, keeping out dust and moisture and providing liquid ingress protection.

In addition, glass lamination and glass heat tempering will improve resistance to breakage. This approach can be applied to SAW, surface capacitive, projected capacitive, camera IR and matrix IR touch screens. Newer touch technologies such as force activated technologies can use a variety of transparent media.

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