Patent ID: 8872807

Claim:
A video processing circuit used in a liquid crystal panel in which a liquid crystal is interposed between a first substrate on which a pixel electrode is provided so as to correspond to each of a plurality of pixels and a second substrate on which a common electrode is provided, and a liquid crystal device is formed of the pixel electrode, the liquid crystal, and the common electrode, the video processing circuit inputting video signals that specify an applied voltage to the liquid crystal device for each of the pixels and defining each of the applied voltages to the liquid crystal devices based on processed video signals, comprising: a first boundary detector that analyzes a video signal of a present frame to detect a boundary between a first pixel of which the applied voltage specified by the video signal is lower than a first voltage and a second pixel of which the applied voltage is equal to or higher than a second voltage higher than the first voltage; a second boundary detector that analyzes a video signal of a frame one frame before the present frame to detect a boundary between the first pixel and the second pixel; a third boundary detector that detects a portion of the boundary detected by the first boundary detector, which is changed from the boundary detected by the second boundary detector, as a risk boundary that is determined by a tilt azimuth of the liquid crystal; and a correction portion that corrects an applied voltage to a liquid crystal device corresponding to a first pixel which is adjacent to the risk boundary detected by the third boundary detector from the applied voltage to a liquid crystal device corresponding to the first pixel to a third voltage or higher, the third voltage lower than the first voltage, when the applied voltage specified by the video signal input to the first pixel is lower than the third voltage.