Method and apparatus for driving liquid crystal panel in dot inversion

DETAILED DESCRIPTION Accordingly, it is an object of the present invention to provide a liquid crystal panel driving method and apparatus that is adaptive for stably keeping picture quality independently of a picture pattern as well as improving picture quality.
In order to achieve these and other objects of the invention, a liquid crystal panel driving method according to one aspect of the present invention includes the steps of dividing a liquid crystal panel into a plurality of blocks; responding liquid crystal cells included in each block to data signals having polarities contrary to the adjacent liquid crystal cells; responding to each of the liquid crystal cells included in each block are data signals having polarities contrary to data signals applied to the liquid crystal cells included in the adjacent blocks; and responding in all liquid crystal cells in the liquid crystal panel are data signals having opposite polarities every predetermined interval.
A liquid crystal panel driving apparatus according to another aspect of the present invention includes signal coupling means for applying data signals to the liquid crystal panel in such a manner that the liquid crystal cells are driven by one line unit; and polarity control means for controlling the data signals applied to the liquid crystal panel in such a manner that the liquid crystal panel is divided into a plurality of blocks and that each block responds to data signals having polarities contrary to the data signals applied to the adjacent blocks.
A liquid crystal display device according to still another aspect of the present invention includes a liquid crystal panel having picture elements and transistors connected to each of the picture elements, said picture elements being positioned at intersections in which a plurality of gate lines cross a plurality of source lines; a gate driver, connected to the plurality of gate lines, for sequentially applying a scanning signal to the gate lines; and a source driver for supplying data voltages to the plurality of source lines in such a manner that the liquid crystal panel is divided into a plurality of blocks, that the polarities of data voltages applied to the picture elements adjacent to each other in the horizontal and vertical direction within each block are contrary to each other, and that a polarity arrangement of the data voltages applied between the blocks adjacent in the horizontal and vertical direction is contrary to each other