What Is a Resistive Touch Panel?
A resistive touch panel is a display overlay made of two thin, transparent conductive layers — usually indium tin oxide (ITO) coated onto a flexible top film and a rigid glass or acrylic base — held apart by tiny insulating spacer dots. When a finger, gloved hand, or stylus presses the top layer down, the two conductive surfaces meet at that point and close a circuit. A controller then measures the voltage gradient across the panel in the X and Y axes to calculate the exact touch coordinate, and passes that as a mouse-style click to the operating system. Because detection depends on physical pressure rather than capacitance, a resistive panel responds to nearly anything that can press it: bare fingers, nitrile or leather gloves, a plastic stylus, a pen cap, or a screwdriver tip.
Key Specifications and Technical Details
Resistive panels are usually classified by wire count. 4-wire designs are the simplest and lowest cost, with typical accuracy in the range of 1–
