Lg Philips Lcd Co., Inc.

Chung-Sun Lim

Joun-Ho Lee

An in-plane switching liquid crystal display device includes a first substrate and a second substrate, a gate line and a data line on the first substrate to define a pixel region, a floating line adjacent to a lower portion of the data line, a thin film transistor at an intersection between the gate and data lines, a passivation layer on the thin film transistor and the pixel region, a common electrode overlapping the data line, a pixel electrode separated from the common electrode at a predetermined interval, and a liquid crystal layer between the first and second substrates.

In-plane switching mode liquid crystal display device and method of fabricating the same

The present invention provides an array substrate for an IPS-LCD device. The array substrate has an image display area and an image non-display area. A first auxiliary line that receives a signal applied to a plurality of common electrodes is arranged in the image non-display area. A second auxiliary line that receives a signal applied to a gate line is also arranged in the image non-display area. The first and second auxiliary lines has the opposite polarity direct electrical currents, and thus, both negative and positive ions from sealant and overcoat layer are trapped in these first and second auxiliary lines. Accordingly, the deterioration of the liquid crystal layer is prevented, thereby increasing the reliability of a liquid crystal display device.

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Seoul, South Korea

Chung-Sun Lim