Resistive Touch Screens

Resistive touch screens are generally divided into 2 types. The 4 wire resistive touch screens & 5 wire resistive touch screens are known as Analog resistive touch screens. And the Matrix is what is known as Digital resistive touch screen. Each type offers a wide variety of sizes as standard product, and of course, Elcom Design can make custom models as per customer' s requirement.

The structure basically consist of two layers . The top layer which is typically PET film, hard coated on the non-conductive side to prevent scratches. And the bottom layer that can be made from PET film or Glass. Then the conductive sides of the top and bottom layers are coated with ITO (Indium Tin Oxide) for superior electrical conductivity and optical transparency. These layers are separated by printed, transparent, non-conductive dots to provide the spacing. When touched, the two conductive layers come into contact and then the controller will determine the coordination by calculating the voltage at the touch point.

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Resistive Touch Screen Tail Types :

  • 5 Wires Resistive Touch Screen
  • 4 Wires Resistive Touch Screen
  • Matrix

Specification of Touch Screen:
Electrical Maximum Circuit Rating 5V DC, 35mA
Insulation Resistance Maxtrix 20MΩ  or more at 50V DC
  Analog 20MΩ  or more at 25V DC
Dielectric Withstand 250V Rms (50-60Hz 1min)
Contact Bounce 30ms or less
Mechanical Actuation Force 10g to 100g
Linearity 1.5% or less
Life Expectancy 35,000,000 touches
Surface Hardness 3H or more
Glass Thickness 0.7mm, 1.1mm, 2.0mm, 3.0mm
Environmental Operation Temperature -10°C to + 60 °C
Storage Temperature -20°C to + 70 °C
Humidity 40°C , 90% to 95% for 240 hours
Optical Transparency ≥80% ± 2%
Structure Film to Glass