1. A method of driving a plurality of pixels of a liquid crystal display (LCD) device when displaying a first frame and a second frame in sequence, the method comprising: detecting a gray-scale difference between the first frame and the second frame; determining a driving mode change between the first frame and the second frame based on the detected gray-scale difference; adjusting a ratio of first pixels, which are driven by a dynamic mode and are included in the plurality of pixels, to second pixels, which are driven by a static mode and are included in the plurality of pixels, in the second frame based on the determined driving mode change; and outputting gray-scale data based on the adjusted ratio; wherein outputting the gray-scale data comprises: (a) counting the number of frames since the first frame is output; (b) determining a count value based on the counted number of frames; (c) selecting one of a plurality of driving mode tables based on the count value; (d) determining whether an additional plurality of pixels included in the plurality of pixels are driven in the static mode or the dynamic mode based on the selected driving mode table; (e) outputting the gray-scale data corresponding to the additional plurality of pixels in the second frame based on a static gray-scale table if the additional plurality of pixels is driven in the static mode; and (f) outputting the gray-scale data corresponding to the additional plurality of pixels in the second frame based on a dynamic high gray-scale table and a dynamic low gray-scale table if the additional plurality of pixels is driven in the dynamic mode.