Structure characteristics of the capacitance screen

Capacitance screen quotation structure characteristics, capacitive touch screen on the touch screen edges are plated narrow electrodes, forming a low voltage ac electric field in conductive body. When touching the screen, the electric field due to the human body, fingers and can form a coupling capacitance between conductor layer, electrode current will flow to the contact from the four edges of bag, and current intensity is proportional to the finger to the electrode distance, the touch screen behind the controller can calculate the current ratio and strength, accurately calculate the position of the touch point. The double glass not only can protect the conductor and capacitive touch screen sensors, more effectively prevent external environmental factors affect the touch screen, even if the screen is stained with filth, dust, or oily be soiled, capacitive touch screen is still can accurately calculate the touch location.
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