Patent ID: 8018412

Claim:
A display device comprising: a source signal line over a first substrate; a gate signal line over the first substrate; a transistor over the first substrate; a plurality of pixel electrodes over the first substrate; and a driver circuit electrically connected to the source signal line, the driver circuit comprising a circuit for sequentially outputting a signal, wherein a gate electrode of the transistor is electrically connected to the gate signal line, one of a source region and a drain region of the transistor is electrically connected to the source signal line, and the other of the source region and the drain region of the transistor is electrically connected to one of the plurality of pixel electrodes, wherein a frame frequency of the display device is 120 Hz or more, wherein a polarity of a plurality of first signals inputted to the plurality of pixel electrodes in a first frame period is different from a polarity of a plurality of second signals inputted to the plurality of pixel electrodes in a second frame period, wherein the polarity of the plurality of first signals inputted to the plurality of pixel electrodes is uniform during the first frame period and the polarity of the plurality of second signals inputted to the plurality of pixel electrodes is uniform during the second frame period, and wherein the first frame period or the second frame period is a period which one image is displayed.