Patent ID: 7852452
Filing Date: 2010-12-14
Classification: G02F

Abstract:
1. A method of fabricating a pixel structure of a liquid crystal display (LCD), comprising: sequentially forming a transparent conductive layer and a first metal layer over a substrate; performing a first photomask process, to pattern the first metal layer and the transparent conductive layer, so as to define a gate electrode pattern and a pixel electrode pattern; sequentially forming a gate insulating layer and a semiconductor layer, covering over the gate electrode pattern and the pixel electrode pattern; performing a second photomask process, wherein the gate insulating layer and the semiconductor layer over the gate electrode pattern are remained, and the first metal layer over the pixel electrode pattern is removed; forming a second metal layer over the substrate; performing a third photomask process, to pattern the second metal layer, wherein a source electrode pattern and a drain electrode pattern are formed on the remained semiconductor layer, and the step of performing the third photomask process further comprising reducing a portion of thickness of the semiconductor layer at a region between the source electrode pattern and the drain electrode pattern; forming a black material layer over the substrate; and performing a fourth photomask process, to pattern the black material layer into a black matrix pattern, so that the transparent conductive layer of the pixel electrode pattern is exposed.