PURPOSE: A flat panel display device is provided to efficiently block leakage current by compensating the characteristic of data inspection switching devices. CONSTITUTION: A display panel is arranged to intersecting pixels of plural gate lines and plural data lines. A plurality of gate check switching elements(TG1-TGn) is matched with a plurality of gate lines. A plurality of gate check switching elements is switched according to a first switching control signal. A plurality of data check switching elements(TD1-TDm) is matched with a plurality of data lines.
