LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREFOR Russian patent published in 2013 - IPC G09G3/36 

FIELD: information technology.

SUBSTANCE: in a bistable circuit which constitutes a shift register in a gate driver (24), there is a thin-film transistor having a drain terminal connected to a gate bus line, a source terminal connected to a reference potential line for transmitting a reference potential (H_SIG_VSS), and a gate terminal to which a clock signal (HCK_1, HCK_2) for operating the shift register is transmitted. When a power off detection unit (17) detects the cutoff of the supply of power-supply voltage (PW) from the outside, the clock signal (HCK_1, HCK_2) is driven high to turn the thin-film transistor on, and a reference potential switching circuit (19) switches the reference potential (H_SIG_VSS) from a gate off potential (VGL) to a gate on potential (VGH).

EFFECT: preventing deterioration of visual quality when power supply is turned on due to rapid elimination of residual charge on pixel formation areas when power supply is turned off.

8 cl, 23 dwg