Touchscreen Working Principle
Abstract In today’s society, the way in which one physically interacts with electronic devices influences the technological researches. This has led to many great advances, including the development of touch screen technology. Through the use of touch screen technology, the operator is given an alternative method of how he can interact with a device. This technology operates currently in seven distinct ways: resistive systems, capacitive systems, infrared systems, Surface Acoustic Wave (SAW) systems, strain gauge systems, optical imaging systems and dispersive signal technology. The objective of the report titled Touchscreen working principle is to briefly explain the principles involved in the working of these technologies. The main focus will be on the resistive and capacitive touchscreen systems while briefly introducing the other mentioned touch sensing technologies. 1. Introduction A touch screen is a two dimensional sensing dev...