PCT Touch Screens

Projected Capacitive Technology (PCT) touchscreens manufactured by Zytronic Displays PLC offer dramatically improved levels of reliability and protection against physical damage compared to other touch screen technologies. This makes Projected Capacitive touch screens ideal for use in a very wide range of applications, from POS terminals to harsh environment industrial or vandal prone applications such as unattended outdoor terminals.

 Zytronics PCT Technology works by laying down a matrix of micro fine wires onto a sheet of glass and passing an oscillation frequency through these wires. This turns the matrix into a series of capacitive plates, and when a conductor such as a finger approaches the screen, the capacitance of these plates' changes, and the control electronics and software translate this into a touch position.

The crucial feature of this technology is that the wires can be placed behind up to 20mm of protective glass, or laminated between layers of toughened glass making the touch screens extremely robust. A unique benefit is that the touch screen can be placed behind a protective sheet of glass or inside a shop window, and be operated through that protective sheet or window. This also allows kiosk designers to eliminate the bezel from their designs, giving their kiosk a modern, ergonomic appearance, and removes the risk of fluids and other contaminants getting between the bezel and the touch screen.

Not only does this technology produce a highly dependable, low-maintenance system, it also offers unrivalled protection against a wide range of physical threats – a cost effective solution for the most demanding touch sensor applications.

Summary of Benefits:

• Excellent readability - light transmission of up to 91% through a standard sensor.
• Ideal for internal and external usage - a proven solution for public access areas.
• Excellent optical clarity – the sensor can be enhanced with Zytronic’s range of optical coatings and filters.
• Accuracy - less than +/- 1.5% of reported position.
• Response time – < 20ms.
• Stability – no drift, therefore no recalibration is required.
• Pointing device – works with gloved and ungloved finger.
• Immunity to damage – unsurpassed impact, vandal, and scratch resistance.
• External environments – unaffected by dirt, moisture and rain.
• Operating temperature – ranges from –35ºC to +65ºC. Sub zero operation may be enhanced by an integrated heater panel.
• Resistance to contamination – unaffected by harsh cleaning fluids.
• Shielded filters can be specified.
• IR and UV filters available. Reduces IR transmission to the LCD by 99.5%.
• Supports both RS232 and USB.
• Embedded controller – further enhances reliability and life expectancy.
• Operating systems supported – Windows 9X, NT, ME, 2000, XP and Linux.

Zytronic touch sensors offer a range of benefits not available with any other touch sensor technology. Zytronic also offers a range of glass constructions and controller options which can meet most customers requirements.

To see video clips of Zytronic Touch screens in action click on this link: ZYTRONIC VIDEO CLIPS

The pictures below show  examples of applications of Zytronic products. Left click on picture to see full story.