| 摘要 |
A horizontal scanning period correction value setting circuit compares a video signal representing a display image of pixel formation portions of polarity-inverted lines and a video signal representing a display image of pixel formation portions of the next row, and generates a signal width correction value for correcting the length of the horizontal scanning period. For this, the signal width correction value is set such that the charge ratios of the pixel formation portions are constant, regardless of a difference between a target voltage of the driving video signals when the polarity is inverted and a target voltage of the driving video signals when the polarity is sustained. Then, a source output control signal and a gate output control signal are generated based on the signal width correction value, and the scanning signals and the driving video signals are generated based on the source output control signal and the gate output control signal.
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