| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal display device, capable of restraining the contrast variations of a display image due to the backlight dimming and preventing of the deterioration of the image quality, and to provide a drive method thereof. SOLUTION: The liquid crystal display device comprises a liquid crystal display panel 103, which includes a pair of substrates 1 and 2, and a liquid crystal layer 3 held in between the pair of substrates 1 and 2, an illumination means 107 for illuminating the panel 103, and a control part CNT for controlling the panel 103 and the illumination means 107. The panel 103 has a plurality of display pixels PX arrayed into a matrix form. The control part CNT comprises a non-video signal insertion means for cyclically writing a video signal and a non-video signal, as a pixel voltage in each of the plurality of the display pixels PX, a synchronization means 5 for determining the turn-on timing or the turn-off timing of the illumination means 107, in relation to the timing at which the video signal or the non-video signal is written in the display pixels, and a phase control means 52 for changing the turn-on period and the turn-on timing of the illumination means 107. COPYRIGHT: (C)2007,JPO&INPIT
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