Resistive touch screen is a multilayer composite film, it is a layer of glass or hard plastic plate as a base, the surface is coated with a layer of transparent metal oxide (transparent conductive resistance) conductive layers above and then covered with an outer layer of surface hardening treatment, smooth anti-friction plastic layer, and its inner surface is also coated with a layer of coating, among them there are many small (less than 1/1000 inch) transparent separation point two conductive layers separated by insulation.

When a finger touches the screen, two conductive layers in the touch point position will have a contact resistance to change, to generate a signal in the X and Y directions, and then send the touch screen controller. It has the following classifications:

1, four-wire resistive screen:

Each layer is increased two transparent metal layer work four-wire resistive analog technology, constant voltage 5V: a vertical direction, a horizontal direction. A total of four cables required. Features: High-resolution, high-speed response. Surface hardness treatment, reduce abrasion, scratch and anti-chemical treatment. Having a smooth and matte processing. A correction, high stability, and never drift.

2, five-wire resistive screen:

Five-wire resistive touch screen technology grassroots of the voltage field in both directions through the precision resistor networks are added to the conductive working surface of the glass, we can simply be understood as sharing in both directions of the voltage field work plus the work surface in the same, The outer layer of the nickel deposit conductive layer only just used as a pure conductor, sharing inner ITO contact point detection method X-axis and Y-axis voltage values measured at the position of the touch point with a touch later. Five-wire resistive touch screen ITO need four inner lead, only for the outer conductor is only a touch screen was a total of 5 lead.

Features: high resolution, high-speed response. High surface hardness, reduce abrasion, scratch and anti-chemical treatment. 30 million times with the point contact can still be used. Conductive glass substrate for the media. A correction, high stability, and never drift. Five-wire resistive touch screen with a high-priced high environmental requirements and shortcomings.

Whether four-wire resistive touch screen or five-wire resistive touch screen, they are completely isolated from the outside world kind of work environment, not afraid of dust and water vapor, which can be used to touch any object that can be used to draw and write, more suitable for industrial control and the Office of the limited human use.