LIQUID CRYSTAL DISPLAY DEVICE, METHOD OF DRIVING LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD OF ADJUSTING PULSE WAVEFORM SIGNAL

摘要

A liquid crystal display device according to the present invention includes a plurality of storage capacitor lines and a storage capacitor drive circuit. The storage capacitor lines are connected to the respective storage capacitors. The storage capacitor drive circuit generates storage capacitor signals CSs1, CSs2 applied to the storage capacitors via the storage capacitor lines. Waveforms of the storage capacitor signals CSs1 and CSs2 in a vertical blanking interval K2 of image display is pulse waveforms. Each waveform includes an upper waveform region in which a signal level is higher than a mean voltage Vcom and a lower waveform region in which the signal level is lower than the mean voltage Vcom. The waveform further includes at least one of an overshoot section (period T1) in which the storage capacitor signal overshoots the maximum value VCSH of the pulse waveform and an undershoot section in which the storage capacitor signal undershoots the maximum value of the pulse waveform for equalizing effective values in the upper waveform region and in the lower waveform region.

主权项

1. A liquid crystal display device comprising:
a plurality of data signal lines; a plurality of scanning signal lines; a plurality of pixels arranged close to respective intersections of the data signal lines and the scanning signal lines, the pixels including transistors, pixel electrodes connected to the transistors, and storage capacitors; a plurality of storage capacitor lines connected to the respective storage capacitors; and a storage capacitor drive circuit configured to generate storage capacitor signals applied to the respective storage capacitors via the storage capacitor lines, wherein a waveform of each storage capacitor signal in a vertical blanking interval of image display is a pulse waveform including an upper waveform region in which a signal level is higher than a mean voltage of the storage capacitor signal and a lower waveform region in which the signal level is lower than the mean voltage, and the waveform of each storage capacitor signal includes at least one of an overshoot section in which the storage capacitor signal overshoots the maximum value of the pulse waveform and an undershoot section in which the storage capacitor signal undershoots the maximum value of the pulse waveform for equalizing effective values in the upper waveform region and in the lower waveform region.