Patent ID: 7151518
Filing Date: 2006-12-19
Classification: G09G

Abstract:
1. A method of driving an active matrix type of liquid crystal display device having a plurality of pixels and a driver circuit for outputting to each pixel a gradation voltage selected from among M (M≧2) gradation voltages, characterized by the steps of: inverting the polarity of the gradation voltage being outputted from the driver circuit to each pixel for every N (N≧2)-line group and every frame; and changing a voltage value of an m (1≦m≦M)-th gradation voltage to be outputted from the driver circuit to each pixel between when it is being outputted to a pixel on a first line immediately after polarity inversion and when it is being outputted to a pixel on a polarity-noninverted line subsequent to the first line immediately after the polarity inversion; wherein an absolute value of a difference between the m-th gradation voltage being outputted from the driver circuit to each pixel and a common voltage is greater when it is being outputted from the driver circuit to the pixel on the first line immediately after polarity inversion than when it is being outputted from the driver circuit to the pixel on the polarity-noninverted line.