Patent ID: 7176865

Claim:
An active matrix display device, comprising: a substrate having a plurality of gate signal lines, a plurality of source signal lines and a plurality of pixel electrodes disposed on the respective portions where the gate signal lines and the source signal lines cross each other, and a thin film transistor electrically connected to one of the plurality of pixel electrodes, wherein first video signals of the same polarity are supplied to said plurality of pixel electrodes through said plurality of source signal lines during a first frame period, wherein second video signals of the polarity opposite to that of said first video signal are supplied to said plurality of pixel electrodes through said plurality of source signal lines during a second frame period subsequent to said first frame period, wherein a length of said first frame period and said second frame period is set to 8.3 msec or less in order to avoid flicker, wherein each of said first frame period and said second frame period is a period in which select signals are supplied to all of the plurality of gate signal lines until one image is displayed, and wherein intervals of said plurality of gate signal lines or said plurality of source signal lines are set to 20 μm or less.