Liquid crystal display device and method for driving the same

  • US 20040183768A1
  • Filed: 03/19/2004
  • Published: 09/23/2004
  • Est. Priority Date: 03/20/2003
  • Status: Active Grant
First Claim
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1. An active-matrix liquid crystal display device comprising:

  • a plurality of pixel formation portions for forming an image to be displayed;

    a plurality of video signal lines for transmitting a plurality of video signals representing the image to the plurality of pixel formation portions;

    a plurality of scanning signal lines intersecting with the plurality of video signal lines, the plurality of pixel formation portions being arranged in a matrix, in correspondence to intersections of the plurality of video signal lines and the plurality of scanning signal lines;

    a scanning signal line driving circuit for selectively driving the plurality of scanning signal lines; and

    a video signal line driving circuit for applying the plurality of video signals to the plurality of video signal lines;

    wherein each of the pixel formation portions takes in, as a pixel value, the video signal applied by the video signal line driving circuit to the video signal line passing through the corresponding intersection when the scanning signal line passing through the corresponding intersection is selected by the scanning signal line driving circuit;

    wherein the scanning signal line driving circuit alternates a first skipping scanning process in which the plurality of scanning signal lines are driven by selecting, in a predetermined order, scanning signal lines that are spaced apart by one or a predetermined number of scanning signal lines, and a second skipping scanning process in which the plurality of scanning signal lines are driven by selecting, in a predetermined order, the scanning signal lines that are not selected in the first skipping scanning process; and

    wherein the video signal line driving circuit applies to the plurality of video signal lines voltages of like polarity in the first skipping scanning process and voltages of like polarity in the second skipping scanning process as the plurality of video signals, and inverts the polarities of the voltages that are applied to the plurality of video signal lines when the driving of the scanning signal lines by the scanning signal line driving circuit switches from the first skipping scanning process to the second skipping scanning process.

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