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Resistive touch screen is the preferred solution for low cost applications. It consists of a conductive bottom layer (ITO Glass or Film) and a conductive top layer (ITO Film). The two layers are suspended by many very small spacer dots. When a certain point is touched, the top layer contacts the bottom layer and a voltage charged by the controller is applied to the bottom layer's electrodes. The coordinate X axis of the touch point can be detected by measuring the voltage value thru the top ITO layer and the coordinate Y axis of the touch point can be detected in the same way by changing voltage input to the top layer's electrodes.
Apply To Specification
* Surface Hardness: 3H
* Optical Clarity: 80 %
* Operating Temperature: -10°C ~ 60°C
* Endurance Test strikes: Over 1 million
* Operating Voltage: DC5V
* Resistance: 200W ~ 900W
* Linearity< 1.5%
* Faceplate Surface: Anti-glare coating
* Operation Pressure: 15 ~ 70g
* Storage Temperature: -20°C ~ 70°C
* Message Noise: 5 m sec ~ 15 m sec
* Operating Current: 5mA ~ 25mA
* Isolation Resistance: 20MW DC25V
Optical Performance
* Light transparency should keep above 80% under the visible wave when the wave length is 550nm
Electrical Performance
* Connector Resistance
200< X Axis <800
300< Y Axis <900
* Insulation Resistance
20M @ DC 25V
* Electrostatic Endurance
No abnormal appearance after 10kv, 100W, 250PF electrostatic used.
* Linearity
X Axis 1.5%
Y Axis 1.5%
* Operating Voltage
3V ~ 7V DC
* Operating Current
5mA ~ 25mA
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