Patent ID: 7388640

Claim:
An in-plane switching mode LCD device comprising: a first substrate; one or more gate lines arranged in a first direction on the first substrate; one or more data lines arranged in a second direction perpendicular to the first direction on the first substrate, a crossing of the one or more data lines with the one or more gate lines defining a pixel region; a plurality of common electrodes disposed in the pixel region; a plurality of pixel electrodes overlapping the common electrodes to define a plurality of sub-pixels; a second substrate facing the first substrate; a first alignment film and a second alignment film disposed at facing surfaces of the first and second substrates, respectively; and a liquid crystal layer between the first alignment film and the second alignment film, wherein a common electrode module includes a plurality of common electrodes arranged parallel to the one or more gate lines, a plurality of protruded common electrodes protruding from one or more of the plurality of common electrodes, a left common electrode auxiliary line disposed at an outer left edge of the pixel region and a right common electrode auxiliary line disposed at an outer right edge of the pixel region, the left and the right common electrode auxiliary lines connecting the plurality of common electrodes, wherein the common electrode auxiliary line does not generate an electric field for driving liquid crystal in the sub-pixel regions; a common electrode connection pattern electrically connecting the common electrode module to an adjacent common electrode module, wherein the common electrode connection pattern is disposed at a central portion of one of the left common electrode auxiliary line and the right common electrode auxiliary line, and wherein the pixel electrode module includes a plurality of pixel electrodes arranged parallel to the one or more data line and a plurality of protruded pixel electrodes protruding from one or more of the plurality of pixel electrodes.