23.8 Inch Capacitive Touch Screen Desktop PCAP Monitor Resolution 1280*1024 Lcd True Flat Touch Screen Display

Capacitive touch monitors work with capacitive touch screen technology. Capacitive touch screen is a four-layer composite glass screen, including the inner surface and sandwich each coated with a layer of ITO glass screen, the outermost layer is a thin layer of silica glass protective layer, sandwich ITO coating as a working surface, four corners of the four electrodes, the inner layer of ITO for the shielding layer in order to ensure a good working environment.

When the finger touches on the metal layer, due to the human body electric field, the user and the surface of the touch screen to form a coupling capacitance. For high-frequency current, capacitance is a direct conductor, so the finger from the contact point to absorb a very small current. This current flows from the electrodes on each of the four corners of the touch screen, and the current flowing through these four electrodes is proportional to the distance from the finger to the corners. The controller derives the position of the touch point by accurately calculating the ratio of these four currents.