Article: Gvision-USA.com
TOUCH DISPLAYS AND PANELS – A BASIC OVERVIEW It is not news of surprise anymore that touchscreen display has so seamlessly included itself in the daily life of the entire world. This particular technology has made its presence indispensable in so many applications – car equipment, mobile phones, computers, interactive displays, etc. to name a few. In the coming future, everything will be touch-responding. The fact is that touch-responsive interfaces connect better with the user, because then the commands he has to feed into the system to get tasks done are lessened due to the elimination of keys and clicks from the process. The touch displays that we see on most of the devices of this era have actually seen quite a few numbers of innovative stages. Further text in this article will discuss the technology that goes into making a touch screen display. The first mention undoubtedly goes to the Resistive Touch technology. It is based on the principle of application of pressure to form a connection that ultimately leads to response. In a resistive touch screen panel, there are two transparent and thin electrically-resistive layers which are separated by a thin space. When pressure is applied on the surface, a connection is formed which relays the position of the touch to the processor and response is generated. Such screens are durable and fairly water-resistant. They are also resistant to contamination to some degree, and therefore are preferred in hospitals and restaurants. The major factor that sets this technology apart is its low cost. Although the touch may not be as promptly responsive as in other technologies, it is reliable and durable. The only drawback in resistive touch technology is the requirement of pressure application and risk of damage by sharp objects. The next most prominent technology for touch screen monitors is the Capacitive Touch. This technology employs the principle of creating a disturbance in energy field which reveals the position of finger on the screen. It consists of an insulating surface coated with a special conductor like Indium Tin Oxide. Remember that the human body is also a conductor. When your finger touches this capacitive surface, its electrostatic field is disturbed, and this variation can be measured. These measurements then are used to pinpoint the location of touch on the screen. While the resistive touchscreen could be operated using anything (as long as pressure is applied,) a capacitive touchscreen needs to have a field disturbance in order to respond. Therefore, if you were to operate your capacitive screen wearing gloves, you would find it nearly impossible. The manufacturers in the field of production of large touch screen monitors are aiming at producing thinner and sleeker versions of devices. Innovation does not take rest in these cases and in fact, it has led to the creation of touchscreen panels that can actually bend (although it still remains to understand why a screen would need to bend to use.) There will soon be screen which is capable of being invisible altogether, giving the user the feel of using a holographical surface to get all his tasks done. If you want to know more about touch screen panels, 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.