Patent ID: 8003451
Filing Date: 2011-08-23
Classification: G02F,H01L

Abstract:
1. A method of manufacturing an array substrate of a liquid crystal display (LCD) device, comprising the steps of: step 1, in which a transparent electrode layer and a gate metal layer are sequentially deposited on a surface of a substrate and are patterned with a first mask plate, so as to form a pixel electrode from the transparent electrode layer and a gate line and a gate electrode branched from the gate line from the gate metal layer; step 2, in which a gate insulating layer, a semiconductor layer, and a heavily doped semiconductor layer are deposited sequentially on the substrate after step 1 and are patterned with a second mask plate, and the gate insulating layer covers the gate line and the gate electrode, the semiconductor layer and the heavily doped semiconductor layer are remained above the gate electrode, and the gate metal layer is removed on the pixel electrode to expose the pixel electrode; step 3, in which a data metal layer is deposited on the substrate after step 2 and is patterned with a photoresist pattern formed by a third mask plate, so as to form a source electrode, a drain electrode and a data line, and the semiconductor layer is exposed in an interval region between the source and drain electrodes; step 4, in which a passive layer is deposited on the photoresist pattern and on a portion of the semiconductor layer exposed by the photoresist pattern in the interval region between the source and drain electrodes; and step 5, in which the passive layer is removed directly over the source electrode, the drain electrode and the data line using a lifting-off process of the photoresist pattern.