PCAP touchscreens with high-quality, long-lasting bonding
The projected capacitive technology is extremely user-friendly, as it reacts to mere touch without pressure, is multi-touch capable and has a positive effect on the longevity of the touchscreen due to its high surface resistance.
The sensor can be provided with a protective layer made of a glass or PET surface or applied directly to a larger glass front using optical glue. The sensor is usually a conductive indium tin oxide (ITO) film or a variable construction of lead wires. Interelectronix connects the sensor directly to the glass or PET surface by means of optical bonding.
Touchscreens with the greatest possible accuracy
It should be emphasized that all touchscreens manufactured by Interelectronix have a particularly high-quality and durable bonding.
Through various optical bonding and refinements of the surface, the so-called optical bonding, not only excellent optical properties but also a high light transmission are achieved.
The accuracy of a PCT is usually higher than that of conventional resistive touch. The PCT does not have to be calibrated at regular intervals, but the implementation effort is significantly higher than with the resistive touch.
Resistant to liquids and chemicals
The high conductivity of the sensor allows the use of a tempered glass surface, so that even larger scratches or contact with liquids and chemicals do not affect the touch performance. Touchscreens in this design are therefore ideally suited for use in medical devices.
Advantages of a PCAP touch screen
For use in medical devices, the main advantages of a projected capacitive touch screen with a glass surface are:
- The projected capacitive touch screen with glass surface is completely wear-free. Due to the pressure-free operation, there is no longer a mechanical (pressure-based) process to locate contact points.
- For this reason, there is no need for premature wear in the area of the most frequently used touch points.
- Calibration is no longer necessary, as there is no different wear and tear as with the resistive touchscreen.
- A robust glass front with a thickness of up to 2 mm is possible.
- The glass front can be continuous and is supplied in almost any size.
- Operation is possible with thin latex gloves.
- The unit cost of a projected capacitive touchscreen is higher, but it is compensated by a longer shelf life.