Patent ID: 7674664
Filing Date: 2010-03-09
Classification: H01L

Abstract:
1. A fabricating method of an array substrate for a liquid crystal display device, comprising: forming a polycrystalline silicon film on a substrate having a display region and a peripheral region, the polycrystalline silicon film having grains of square shape; forming a first active layer in the display region and a second active layer in the peripheral region by etching the polycrystalline silicon film; forming first gate electrode over the first active layer, a second gate electrode over the second active layer and a gate line connected to the first gate electrode; and forming first source and drain electrodes connected to the first active layer, second source and drain electrodes connected to the second active layer and data line connected to the first source electrode, wherein one end of the first gate electrode overlaps the first active layer to form a first channel region, wherein the first channel region is formed inside one of the grains, wherein the first active layer has square shaped grains, and regions of the first gate electrode, the first source electrode and the first drain electrode are disposed in different grains from the one of the grains of the first channel, and wherein the other end of the first gate electrode has a size greater than the one of the grains and occupies at least two grains.