US 2002/0057243 A1 · Liquid crystal display device and driving control method thereof

Abstract

In a liquid crystal display device of an active matrix type, at first, an initialization signal voltage having a voltage value equal to or higher than the maximum voltage value of a display signal is applied to display pixels in a signal application period in a field period. The display signal is thereafter applied. As a result, the change amount of the voltage applied to liquid crystal due to the field-through voltage in relation to a gate pulse can be arranged to be substantially constant, and can always be cancelled by a common electrode voltage. Occurrence of flicker and seizure phenomena can be thereby restricted so that the display quality can be improved.

Claims19

Dependent claims

A liquid crystal display device comprising:

a liquid crystal display panel having a plurality of signal lines, a plurality of scanning lines, and a plurality of display pixels arrayed in a matrix and provided respectively near cross-points between the signal lines and the scanning lines through switching elements;
and
a driver which supplies the plurality of signal lines with a display signal in a field period, and which scans the plurality of scanning lines, to apply the display signal to the plurality of display pixels, wherein
the driver applies a predetermined initialization signal voltage to the display pixels, and thereafter applies the display signal in at least one signal application period set within the field period.

1 more element

A drive control method for a liquid crystal display device which has a plurality of signal lines, a plurality of scanning lines, and a plurality of display pixels arrayed in a matrix and provided respectively near cross-points between the signal lines and the scanning lines through switching elements, and which supplies the plurality of signal lines with a display signal in a field period and scans the plurality of scanning lines, to apply the display signal to the plurality of display pixels, comprising:

providing at least one signal application period in the field period;
applying a predetermined initialization signal voltage to the display pixels in the signal application period;
and
applying the display signal to the display pixels after completion of the applying of the initialization signal voltage in the signal application period.

1 more element

Dependencies are inferred from the claim text.

Liquid crystal display device and driving control method thereof

Life of this patent

Liquid crystal display device and driving control method thereof

Life of this patent

Abstract

Claims19