PCAP

What is PCAP?

PCAP Technique


The technique:

PCAP touch screens are made up of a matrix of rows and columns of conductive material, layered on sheets of glass. This can be done either by etching a single conductive layer to form a grid pattern of electrodes, or by etching two separate, perpendicular layers of conductive material with parallel lines or tracks to form a grid. Voltage applied to this grid creates a uniform electrostatic field, which can be measured. When a conductive object, such as a finger, comes into contact with a PCT panel, it distorts the local electrostatic field at that point. This is measurable as a change in capacitance. If a finger bridges the gap between two of the "tracks", the charge field is further interrupted and detected by the controller.
Because of its high optical clarity and accuracy, PCAP  technology is typically used in kiosk applications. The tempered glass of 4 to 20 millimeter can be used in harsh environments and it is resistant against the most chemical substances.

The PCAP touch screen allows operation with fingers , gloves and in wet environments

 


 


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