Patent ID: 7696026
Filing Date: 2010-04-13
Classification: G02F,H01L

Abstract:
1. A method of fabricating an array substrate for a liquid crystal display device, comprising: forming a first metal layer on a substrate; patterning the first metal layer to form a gate line, a gate electrode, and a first capacitor electrode; sequentially forming a first gate insulation layer and a second gate insulation layer such that the first gate insulating layer directly covers the patterned first metal layer; forming a pure amorphous silicon layer and a doped amorphous silicon layer on the second gate insulation layer; patterning the doped amorphous silicon layer and the pure amorphous silicon layer to expose a portion of the second gate insulation layer and to form an ohmic contact layer and an active layer over the gate electrodes; removing the exposed portion of the second gate insulation layer on the first gate insulation layer over the first capacitor electrode such that the first gate insulating layer corresponding to the first capacitor electrode is exposed; forming a second metal layer to cover the exposed portion of the first gate insulation layer, the second gate insulation layer, the active layer and the ohmic contact layer; patterning the second metal layer to form a data line, a source electrode, a drain electrode and a second capacitor electrode, the second capacitor electrode disposed directly on the exposed portion of the first gate insulating layer and overlapping the first capacitor electrode; forming a passivation layer to cover the patterned second metal layer; patterning the passivation layer to form a drain contact hole to the drain electrode and a capacitor contact hole to the second capacitor electrode; forming a transparent conductive material on the patterned passivation layer; and patterning the transparent conductive material to form a pixel electrode.