Introduction to Touchscreen Technologies

This chapter will review the major commercially available touchscreen technologies, including the design considerations, materials, and construction methods. Strengths and weaknesses of the technologies are listed in an easy-to-read format. Brief reviews of new and emerging technologies are also included.

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Touch screen technology has taken the world by storm, and one of the most fascinating aspects of this technology is the variety of types available. In fact, these types can be divided into five different categories, each having its own unique technical principle. These different categories include vector pressure sensing technology, resistance technology, capacitance technology, infrared technology, and surface acoustic wave technology touch screens.

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When it comes to vector pressure sensing technology, these screens work by detecting pressure points. In contrast, resistance technology screens are responsive to pressure from a stylus or finger, using two thin metallic layers. Capacitance technology screens detect touch through electrical charges, while infrared technology screens utilize multiple infrared LEDs and sensors. Lastly, surface acoustic wave technology screens detect touch through sound waves that bounce off the screen.

Overall, there are a varied number of ways in which touch screen technology allows users to interact with screens, each with its own set of advantages and disadvantages. Understanding these different types can assist individuals in selecting the type of technology that best fits their needs.

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