Patent ID: 7482628

Claim:
An array substrate for a liquid crystal display (LCD) device, comprising: a substrate including a display region and a non-display region at a periphery of the display region; a first thin film transistor (TFT) in the non-display region, the first TFT including a first semiconductor layer, a first gate electrode over the first semiconductor layer, a first source electrode and a first drain electrode, wherein the first gate electrode is directly over the first semiconductor layer; a first protrusion extending from the first gate electrode along an edge of the first semiconductor layer; a second TFT in the non-display region, the second TFT including a second semiconductor layer, a second gate electrode over the second semiconductor layer, a second source electrode and a second drain electrode, wherein the second gate electrode is directly over the second semiconductor layer; a second protrusion extending from the second gate electrode along an edge of the second semiconductor layer; a gate line and a data line crossing each other in the display region to define a pixel region; a third TFT connected to the data line and the gate line in the display region, the third TFT including a third semiconductor layer, a third gate electrode over the third semiconductor layer, a third source electrode and a third drain electrode, wherein the third gate electrode is directly over the third semiconductor layer; a third protrusion extending from the third gate electrode along an edge of the third semiconductor layer; and a pixel electrode connected to the third drain electrode in the pixel region, wherein at least one of the first, second and third gate electrodes has first and second sides opposite to each other, and a corresponding protrusion of the first, second and third protrusions to the at least one of the first, second and third gate electrodes is disposed at both of the first and second sides.