| 摘要 |
PURPOSE: A driving method and a drive control circuit of a liquid crystal display device, and a liquid crystal display device including the same are provided to prevent degradation of display quality even if a vertical scanning frequency or a horizontal scanning frequency is changed. CONSTITUTION: The gate voltage regulating circuit(32) includes a timing controller(301) for detecting the change of the horizontal scanning frequency, a gate-on voltage generating circuit(305) for generating two kinds of gate-on voltages Va and Vb, the comparator(312) outputs the control signal to the switch(303) so that the gate-on voltage Va is outputted, and the switch(303) outputs the gate-on voltage Va. Next, the count value of the counter(311) is cleared, and until it becomes unnecessary to output the gate-on voltage Vg because of power-off or the like, the counter(311) counts the clocks from the oscillating circuit until the synchronizing pulse of the horizontal synchronizing signal is again detected.
|
