A thin-film transistor (TFT) array structure and a liquid crystal display (LCD) panel thereof are described. The TFT array structure includes a plurality of scan lines, a plurality of first data lines, a plurality of second data lines, a plurality of pixel units and a plurality of control module. Each of the control modules is coupled among the scan line, one second data line and one pixel unit. The second data line charges the later control module when the scan line is selected to be activated for charging the pixel unit by the first data line. The charged later control module charges another pixel unit when the scan line is inactivated and another scan line is selected to be activated for charging another pixel unit by the first data line. The TFT array structure can reduce the charging duration of the pixels.