Detection device of capacitive screen

Abstract

The present invention discloses a detection device of a capacitive screen. The capacitive screen comprises a plurality of common electrodes, and each of the common electrodes corresponds to a plurality of pixel electrodes, and the detection device comprises a signal transmitting module and a signal receiving module, wherein: the signal transmitting module is coupled to the common electrode, and employed to input a transmitting signal to the common electrode; the signal receiving module is coupled to the pixel electrode, and employed to collect a receiving signal, and calculates a capacitance between the common electrode and the corresponding pixel electrode according to the receiving signal, and determines whether the corresponding common electrode is disconnected or not according to the capacitance. By utilizing the present invention, the disconnected common electrode in the capacitive screen can be detected.

Dependencies are inferred from the claim text.