Capacitive Touch Panel Heat Detection Myth Busted

Many people believe that there are certain touchscreens that detect heat. For example, an iPhone’s touch screen will detect interactions with a finger but will not detect activity from a stylus pen. However, it’s not heat which these kinds of touch screens detect but it is the conductibility of an object; something that capacitive touch panels specialize in. Capacitive touch panels come in two types—surface capacitive and projected capacitive. Projected capacitive screens are the second most widely used sensing technology for touch-sensitive...

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The Past and Future of Touch Screen Technology

You see it in almost every piece of commercial hardware nowadays. From handhelds to 20-inch display monitors, touch screen technology is as integrated in daily life as the Internet. While it may seem like a modern innovation, the touch screen isn’t exactly a new technology; it was invented in 1965 by a British scientist named E.A. Johnson. His work was somewhat crude and can only process one touch at a time, but Johnson’s capacitive touch screen, which is coated with an indium tin oxide (ITO) capacitor, would form the basis of today’s touch display...

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