COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When it is touched by finger, an interruption is created in the screens electrostatic field.
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When it is touched with finger, the 2 layers meet at the point of touch thus making a circuit at the point of touch
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Two layer of conductive material with a very small gap between them which acts as a resistance.
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This information is recognized by the mobile’s processor / chip and passed on to the mobile’s OS there by triggering and event / action at the point of touch.
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Detailed explanation-1: -Capacitive screens are made up of multiple layers of glass and plastic, coated with a conductor material like indium tin oxide or copper. This conductive material responds when contacted by another electrical conductor, like your bare finger.
Detailed explanation-2: -Standard capacitive touchscreens measure the change of the mutual or self-capacitance of the screen electrodes caused by the touch object. By applying some algorithms and mathematical operations over the measured signals, information about the position of the touches, their strength, size, and shape can be obtained.
Detailed explanation-3: -Capacitive touch screens are built with a thin layer of conductive material, such as copper or Indium Tin Oxide (ITO), printed onto the underside of the display’s insulating outer layer.
Detailed explanation-4: -A capacitive touchscreen is a control display that uses the conductive touch of a human finger or a specialized input device for input and control.