Surface Capacitive
Touch Screen Sensors
Surface capacitive sensors are often the preferred solution for touch applications that require good optics, light touch and are vandal resistant. This technology, like resistive has been in the field for decades and has dominated the market in kiosk and gaming applications due to its vandal resistant glass membrane surface and excellent optical characteristics.
Applications
- CONTROL PANELS
- INDUSTRIAL AUTOMATION
- KIOSKS – INDOOR
- INFORMATION KIOSKS
- POINT OF SALE TERMINALS
- TICKETING MACHINES
- ATMS
Markets
- INDUSTRIAL
- RETAIL
- ENTERTAINMENT
Features & Benefits:
- Light touch
- Touch point durability
- 5 Mohs surface hardness rating
- Moderate abrasion resistant
- Contaminant resistant
- High optical clarity and light transmission
- Fast touch response time
Technical Specification Summary*:
| Size: | 3.5″ to 24″ |
| Types: | 4- or 8-wire; and 5-wire |
| Input Device: | Finger, Conductive stylus |
| Surface Hardness: | 6.5 Mohs |
| Temperature: | Operating: -10°C to +55°C* Storage: -40°C to +70°C* |
| Enclosure Compatibility: | NEMA 4, 12; IP65 |
| Transmittance: | ≥85% |
*Technical specifications apply to standard products and are subject to change without notice. Product performance will be subject to suitable installation and mounting. Consult manufacturer for technical drawings, best practices for installation and mounting, confirmation that product can meet intended application’s requirements or for the applicable product specifications when optional enhancements are applied.
Enhancements – Available Options:
Some applications have more demanding requirements. To meet these needs A D Metro can provide select combinations of the following options:
- Anti-Glare (AG) or Anti-Reflective coatings
- Chemically strengthened backers
- Printed laminations
How Do Surface Capacitive Touch Screens Work?
Surface capacitive touch screen sensors consist of a transparent conductive layer on a glass substrate under a protective silicate layer. The controller applies a high frequency signal to an electrode at each corner of the conductive layer. When a finger is placed on the screen, it forms a capacitive coupling with an impedance to ground that dissipates some of the signal. The change in signal at each corner is measured to locate the touch point.
For more information on popular touch screen technologies, please download our whitepaper.
