ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE AND ITS DRIVE METHOD

摘要

Each source bus line (11) includes a discharge transistor (31) having the same polarity as a pixel transistor (14) and having a gate to which an OFF potential signal (VSS) of the pixel transistor (14) is supplied. When power of an active matrix type liquid crystal display device is OFF, the OFF potential signal (VSS) is made to reach the potential of the GND level before an ON potential signal (VDDG) of the pixel transistor (14). The pixel transistor (14) and the discharge transistor (31) are set to a half-open state so as to let out charge accumulated in each pixel (13) to a common electrode TCOM.