Patent ID: 7196759

Claim:
An in-plane switching mode liquid crystal display device, comprising: a gate line on an inner surface of a first substrate; a common line substantially parallel to and spaced apart from the gate line; a data line crossing the gate line to define a pixel region; a thin film transistor connected to the gate line and the data line, the thin film transistor including a gate electrode connected to the gate line, a source electrode connected to the data line, and a drain electrode spaced apart from the source electrode; a first insulating layer to cover an entire surface of the first substrate except the pixel region and portions of the drain electrode and the common line; a first pixel line layer connected to the drain electrode and on a side of the first insulating layer, the first pixel line layer overlapping a portion of an upper surface of the first insulating layer; a first common line layer connected to the common line and on a side of the first insulating layer, the first common line layer overlapping a portion of an upper surface of the first insulating layer; a second insulating layer in a region that is not covered by the first insulating layer, the second insulating layer in the region including the pixel region; a second pixel line layer connected to the first pixel line layer, the second pixel line layer on the second insulating layer, the first and second pixel line layers forming a pixel line; a plurality of pixel electrodes extending from the second pixel line layer in the pixel region, wherein the plurality of pixel electrodes is substantially parallel to the data line; a second common line layer connected on the first common line layer, the second common line layer on the second insulating layer, the first and second common line layers forming an auxiliary common line; a plurality of common electrodes extending from the second common line layer in the pixel region, wherein the plurality of common electrodes is substantially parallel to the pixel electrodes; a second substrate facing and spaced apart from the first substrate; and a liquid crystal layer between the first and second substrates.