Patent ID: 7180488

Claim:
A method of driving an active matrix type liquid crystal display device comprising a video control circuit and a selecting circuit, comprising: producing first image signals with a first polarity and a second polarity opposite to said first polarity by the video control circuit; during a first frame, applying the first image signals to a first group of pixels with the first polarity and a second group of pixels with the second polarity, wherein said first group of the pixels is adjacent to said second group of the pixels with a first boundary therebetween; and producing second image signals with the first polarity and the second polarity by said video control circuit; during a second frame subsequent to said first frame, applying the second image signals to a third group of pixels with the first polarity and a fourth group of pixels with the second polarity wherein said third group of the pixels is adjacent to said fourth group of the pixels with a second boundary therebetween, said second boundary being in a different position from said first boundary, wherein said third group of pixels is partly overlapped with the first group of pixels, and said fourth group of the pixels is partly overlapped with the first group of the pixels, and selection of the first and second polarities is performed by said selecting circuit.