Behind The Scenes Of A Touchscreen Monitor

1. Article: Gvision-USA.com BEHIND THE SCENES OF A TOUCHSCREEN MONITOR With the technology of touchscreen display so commonplace these days, there is definitely some amount of curiosity regarding how it works. With just one touch of your fingers, your electronic devices start responding obediently. This appears just like magic at first glance, however, there is a lot that happens behind the scenes of this ground-breaking technology. To find out, read on. A touch screen display can be of three types, as of today. The first is the resistive touch screen, which was the first to be invented. Second is the capacitive touchscreen, which is the most common and popular of all. Third is the acoustic wave touchscreen, which is the costliest of all. The ways these three touchscreen technologies work differ greatly from one another. All of them utilize different principles of science and physics. This article discusses the working of touchscreens in very simple terms. Let’s talk about resistive touch display first. This technology was the first touch technology. It has become obsolete today, since the capacitive technology came around. A resistive touch interface employs three different layers to achieve the touch function. One layer is capacitive, one layer is resistive and the third layer is a scratch guard. The capacitive and resistive layers are place one over the other, with some space in between. When your finger touches the screen on top, these two layers come in contact because of the finger-pressure. This contact between the two layers is then translated into signals that are sent to the processor to recognize “touch”. Thus, a resistive touchscreen utilizes pressure to generate contact between the two layers and process commands further. A capacitive touch screen panel is a much better interface than a resistive one. This is because a capacitive panel utilizes the property of “charges”. A capacitive screen carries some charge on it; so does your finger. When you touch a capacitive screen, the charge from this screen is transferred to your finger, decreasing the amount of charge on the screen. There are circuits on the corners of the screen, which measure this decrease and communicate it to the processor. It is then the processor’s job to recognize where this decrease took place, which helps it to identify where you’re touching. This entire process happens within fractions of a second. The third technology of touchscreens, and the most advanced one yet, it the surface acoustic wave technology. A screen equipped with this technology contains transducers placed along the horizontal and vertical axes of the screen, and reflectors. Electrical signals flow on the screen between the transducers with the help of the reflector. When there is a touch event on the screen, the signals are disturbed. The communicating transducers are able to tell where this disturbance came from, which helps in recognizing the point of touch. A resistive screen uses too many layers, which causes lesser light to come through. With a capacitive screen, almost 90% of the light passes through. With surface acoustic wave technology, 100% of the light is able to pass. Thus, the most crisp and vibrant displays are obtained. To know more about touchscreen monitor, visit Gvision-usa.com. ABOUT THE AUTHOR Daniel Williams is an expert in human machine interface technology and is particularly interested in touchscreen monitors – a system that has taken the world by storm. He loves to write articles and blogs on the topic and recommends Gvision-USA.com as the best place to buy these devices from.