Capacitive Touch Screens Capacitive Surface Projected

Advantages of the capacitive technologies

The major advantages of capacitive touch screens  are zero activation force which results in a very light, quick and precise touch activation. Perfectly suited for gaming and point of sale applications in attended indoor environments. Another very important advantage is unrivaled light transmission >90% if coated properly.

Surface Capacitive - Projected Capacitive

Capacitive touch screen can be split into 2 major technologies

• Surface capacitive
• Projected capacitive

Surface Capacitive

Surface capacitive touch screens have a conductive ITO coating on the front side. They measure the voltage change when their capacitive field is interfered.

Projected Capacitive

The projected capacitive touch sensor has the ITO layer applied on the backside. The ITO layer projects the capacitive field through the front glass of the sensor.

Important

Gloved hand operation is critical. All conductive gloves will work fine. Thin medical gloves are fairly good to operate if the capacitive field is amplified. As soon as you need gloved and ungloved hand operation or you have to use heavy duty gloves you should consider are different technology like ULTRA.