General features of 5-Wire-Resistive Touch-Panels
- ITO touch-screens are an interactive input device integrated onto electronic displays. The touch screen consists of two conductive layers. The top layer is ITO film while the bottom layer can be either ITO film or ITO glass. The top layer is suspended by very small spacer dots. When the operator touches the touch panel, the conductive inner surface of the ITO film makes contact with the conductive coating on the top surface of ITO film (or ITO glass). The coordinate X axis of the touch point can be detected by measuring the voltage value though the top ITO layers electrode. Y axis work similar way. Then an external controller senses the touch panel and passes the information to the corresponded IC.
- Standard 5-Wire-Resistive Touch-Panels are available in different sizes (10.4”…19.1”)
- 5-Wire-Resistive Touch-Panels are the most preferred solution for applications requiring durability and reliability over time.
- The fundamental structure difference between 5-Wire-Resistive and 4-Wire-Resistive is that all the electrodes are placed on the bottom layer and the top layer acts only as a voltage measuring probe. Therefore the touch screen works properly even with damages or scratches on the top layer.
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