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    Home >>  Industrial Display >>  Open Frame LCD Monitor >> Touch Screen  >>

CarrollTouch Infrared Touch Technology

CarrollTouch infrared technology is the survivor of harsh applications. It's the only technology that does not rely on an overlay or substrate to register a touch, so it's impossible to physically "wear out" the touchscreen. CarrollTouch technology combines superior optical performance with excellent gasket-sealing capabilities, so it's an excellent choice for harsh industrial and outdoor kiosk applications. Touched with a finger, gloved hand, fingernail, or stylus, it delivers a fast, accurate response every time. CarrollTouch infrared technology is available for flat panel solutions.
  • Withstands severe environments
  • Adjusts to changing light conditions, including direct sunlight
  • Stable, no-drift calibration performance
  • Vandal- and abrasion-resistant screens, ideal for rugged applications
  • Parallax-free performance for LCD displays
  • Sealable against contaminants
  • Choice of controller interface
  • Choice of filter type or overlay for system protection and optimal optics
  • Indoor/outdoor kiosks
  • ATMs
  • Ticketing machines
  • Medical instrumentation
  • Process control systems
  • Hospital operating rooms
  • Commercial transportation
  • Commercial food preparation and service
  • Large plasma displays

The CarrollTouch IR XRES frame is a solid state circuit card assembly. The circuits are populated onto .062" thick FR4 printed wiring board material with a UL flammability rating of 94V-0. The IR transparent insert attached to the circuit card assembly is polycarbonate material with a UL flammability rating of 94V-0 at thicknesses of .090 inches and above, and 94V-2 at thicknesses from .034-.089 inches.

The cable exits from the left center of the frame assembly and is a 16 position, 0.5 mm flat flex cable (FFC). The cable terminates into a ZIF connector on both sides of the controller and frame interface.

The FFC cable can be folded and creased. Test data for this cable reveals that the cable maintains electrical characteristics over 20 million cycles of a simulated forming bend around cylinders of radius 0.5", 0.75", and 1.0". The FFC is guaranteed to maintain electrical and plating characteristics for a minimum of 25 insertion and withdrawal cycles with the ZIF connector.

Positional Accuracy

The positional accuracy of the IR XRES frame to a touch stylus is a function of the physical spacing of the discrete IR opto-electronics, diameter of the touch stylus, and location of the stylus in the touch active area.

The table below provides the positional accuracy specifications with corresponding XRES product (15" diagonal) and dimensional determinants.

Horizontal Touch Size 12.16"
Vertical Touch Size 9.13"
Typical Accuracy 1 .047" (21 points/inch)
Minimum Accuracy 2 .22" (5 points/inch)
Minimum Accuracy % 3 4%
Minimum Stylus Size 4 0.25"

1 Typical accuracy demonstrated by product using a stylus greater than minimum specified diameter.
2 Minimum accuracy demonstrated by product using a stylus greater than minimum specified diameter.
3 Percent of touch area that may possibly exhibit the minimum accuracy parameter.
4 Minimum stylus diameter required for a touch response.

Touchpoint Density

Touchpoint density is based on controller resolution of 4096 x 4096. This equates to more than 100,000 touchpoints/in2 (15,500 touchpoints/cm2) for a typical touchscreen used with TouchSystems controllers

Touch Activation Force

No minimum touch activation force is required with IR touch technology

  • Temperature
    • Operating: -20ºC to 70ºC
    • Storage: -40ºC to 85ºC
    Relative Humidity
    • Operating: 0% to 95% noncondensing
    • Storage: 0% to 95% noncondensing
    Thermal Cycling

    The touch system shall be capable of functioning normally after the completion of 50 thermal cycles from room conditions to +85ºC to -40ºC and then back to room temperature at a rate not to exceed 2ºC per minute with a one hour soak at each temperature extreme.

    Ambient Light

    The IR touch screen shall be capable of operating in the following ambient light conditions when mounted in a typical application enclosure:

    • Direct Sunlight perpendicular to +/- 30º to the display surface - Touch Detection Operational
    • Direct Sunlight all angles to display surface - No false touch reports

Electrostatic Discharge Protection [per EN 61000-4-2]: The touch system shall withstand 15KV air discharges to the touch active area and bezel insert seams. The touch system interconnects shall withstand level 4 immunity as detailed in IEC 1000-4-2 requirements for air and direct contact discharges, 15KV and 8KV respectively.


RoHS compliant





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