| 摘要 |
A liquid crystal display and a driving method thereof are provided to minimize the decrease of luminance and to improve image quality by alternately displaying video data and black level data on a liquid crystal panel at the period of a frame frequency or a higher frequency than the frame frequency. In a liquid crystal display, there is provided a liquid crystal panel(102) in which first data lines are arranged to cross gate lines on a first region and second data lines are arranged to cross the gate lines on a second region. A data converting unit(110) converts video data of a first frame frequency into video data of a second frame frequency higher than the first frame frequency. A backlight unit(112) has a first lamp group and a second lamp group. The first lamp group has at least two lamps for radiating light into sub regions of the first region. The second lamp group has at least two lamps for radiating light into sub regions of the second region. A driver operates the gate lines and the first and second data lines in accordance with the video data of the second frame frequency. The driver also drives the first and second lamp groups at the second frame frequency such that the lamps of the first lamp group are sequentially turned on and off to in synchronization with the lamps of the second lamp group.
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