Patent ID: 8159642
Filing Date: 2012-04-17
Classification: G02F

Abstract:
1. An in-plane switching (IPS) mode liquid crystal display (LCD) device comprising: first and second substrates; a gate line on the first substrate; a data line crossing the gate line to form a pixel region; a thin film transistor (TFT) at the crossing of the gate line and the data line; a plurality of pixel electrodes and common electrodes alternately arranged in parallel in an extended direction of the gate line and generating an in-plane field of a first direction; a common electrode line substantially parallel to the data line of the pixel region and connecting the plurality of common electrodes, the common electrode line being disposed at both side portions of the data line; a pixel electrode line substantially parallel to the data line of the pixel region and connecting the plurality of pixel electrodes, the pixel electrode line being disposed at the both side portions of the data line; auxiliary pixel electrodes at end portions of only the pixel electrodes between the common electrodes and the pixel electrodes to prevent generation of disclination by an electric field caused by the acute angle between the common electrodes and the common electrode line, the auxiliary pixel electrodes being integrally formed with the pixel electrodes and the pixel electrode line; an alignment film rubbed in a direction substantially perpendicular to the data line and in an oblique direction to the pixel electrodes and the common electrodes; and a liquid crystal layer between the first and second substrates, wherein the pixel electrodes and the common electrodes are bent at both ends thereof and the in-plane field in the first direction is generated from both ends of the pixel electrodes and the common electrodes and liquid crystal molecules in the liquid crystal layer are aligned parallel to a direction of the in-plane field caused by the data line when a signal is not applied to the pixel electrodes, wherein the gate line is bent in each pixel region, and wherein each of the pixel electrodes are formed in a rectangular shape having two parallel sides and two end portions, and the auxiliary pixel electrodes are respectively disposed at the two end portions and opposite sides of the two parallel sides so that two auxiliary pixel electrodes are disposed at every area between the pixel electrodes and the common electrodes.