Patent ID: 7440061

Claim:
An IPS-LCD device, comprising: first and second substrates opposing each other; a gate line on the first substrate; a data line perpendicular to the gate line; a thin film transistor at a crossing portion between the gate and data lines; a common line parallel to the gate line; a plurality of common electrodes electrically connected to the common line, wherein the common electrodes are spaced apart from each other; a plurality of pixel electrodes alternately arranged with the plurality of common electrodes, wherein each pixel electrode is spaced apart from an adjacent common electrode; a plurality of dielectric protrusions between the first and second substrates; and a liquid crystal layer between the first and second substrates, wherein the liquid crystal layer and the dielectric protrusions have different dielectric constants, wherein the dielectric protrusions have a larger dielectric constant than the liquid crystal layer, wherein each pixel electrode includes first, second, third and fourth pixel electrode reference locations and each common electrode includes first, second, third and fourth common electrode reference locations that correspond to the first, second, third and fourth pixel electrode reference locations and wherein the dielectric protrusions are disposed on the pixel electrodes at first and third pixel electrode reference locations and on the common electrodes on second and fourth reference locations.