Projected Capacitive touch screen

Projected capacitive touch screen is the touch technology of 2012. It’s mostly found in the smartphone market, but that’s beginning to change. As of late, projected capacitive is enjoying popularity with monitors and displays ranging from 15″ to 55.” Projected capacitive can be integrated with larger displays, but the integration cost sometimes can outweigh the benefits.
How Projected Capacitive Works:
Projected capacitive touch screens consist of a charged matrix, or field, of columns and rows that are read or scanned by the microcontroller. When a finger or stylus interacts with the screen, the microcontroller can “read” the touch point because of “mutual capacitance.” Mutual capacitance posits that conductive objects will hold a charge when they are in close proximity to each other. When a finger or stylus interrupts the charged field, the mutual capacitance is reduced, allowing the microcontroller or sensor to pinpoint the touch location or locations.
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