Resistive touch screen 

•        Resistive touch screen, which is controlled by a pressure sensor. The main part of the resistive touch screen is a display screen and the resistance of the film surface is very fit, this is a kind of multilayer composite film, with a layer of glass or plastic plate as the base layer, the surface coated with a layer of transparent metal oxide (transparent conductive resistance above) conductive layer, then covered with a layer of outer surface hardening treatment, anti rub smooth plastic layer, the inner surface is coated with a layer of coating, there are many tiny in between them (less than 1/1000 inch) transparent conductive layer to two layer isolation points separated by insulation. When a finger touch screen, two conductive layer on the touch point had contact resistance change, X and Y generate signals in two directions, and then send the touch screen controller to detect the contact and calculate the (X, Y) position, according to the simulation of the mouse operation. This is the basic principle of the resistive touch screen. The screen resistance performance characteristics: they are a completely isolated on the outside of the work environment, not afraid of dust, moisture and oil, can be used to touch any object that can be used to draw and write them, this is the advantage of relatively large resistance touch screen accuracy depends on the A/D conversion precision, it can easily reach 4096*4096.

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