In-plane switching LCD device having slanted corner portions

An array substrate device for use in an IPS LCD device, comprising:

• a gate line disposed in a transverse direction on a substrate;
• a data line disposed in a longitudinal direction perpendicularly crossing the gate line, the data line defining a pixel region with the gate line;
• a common line disposed in a transverse direction adjacent to the gate line on the substrate;
• a thin film transistor adjacent to a crossing portion of the gate and data lines, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
• a plurality of common electrodes in the pixel region on the substrate, one ends of the plurality of common electrodes coupled with the common line;
• a gate insulation layer covering the gate line, the gate electrode, the common line and the plurality of common electrodes;
• a passivation layer covering the data line, the source electrode and the drain electrode, the passivation layer having a drain contact hole exposing the drain electrode;
• a plurality of pixel electrodes in the pixel region on the substrate, wherein the plurality of pixel electrodes and common electrodes are arranged in an alternating manner and a pair of pixel and common electrodes define a sub-pixel region with a predetermined interval therebetween;
• a first pixel connecting line disposed on the passivation layer over the common line and coupled with one ends of the plurality of pixel electrodes;
• first slanted slopes at corners where the common electrodes meet the common line in upper portions of one of the even- and odd-numbered sub-pixel regions;
• and
• second slanted slopes at corners where the pixel electrodes meet the first pixel connecting line in the upper portions of one of the even- and odd-numbered sub-pixel regions;
• wherein each of the first slanted slopes and respective each of the second slanted slopes cross each other.