Patent ID: 6894760
Filing Date: 2005-05-17
Classification: G02F

Abstract:
1. A manufacturing method of an array substrate for a liquid crystal display device, comprising: forming a gate line and a gate electrode on a substrate through a first mask process; forming a gate insulating layer, an amorphous silicon layer, a doped amorphous silicon layer, and a metal layer on the gate line and the gate electrode; forming a photoresist layer on the metal layer; forming a photoresist pattern by exposing and developing the photoresist layer through a second mask process, the photoresist layer having a first thickness and a second thickness thinner than the first thickness; patterning the metal layer, the doped amorphous silicon layer, and the amorphous silicon layer exposed by the photoresist pattern to form a source and drain pattern, a data line, a doped amorphous silicon pattern, and an active layer; removing the second thickness of the photoresist pattern through an ashing process to expose the source and drain pattern; patterning the source and drain pattern and the doped amorphous silicon pattern exposed by the photoresist pattern to form a source electrode, a drain electrode, and an ohmic contact layer; forming a passivation layer on the source and drain electrodes; patterning the passivation layer through a third mask process to form a contact hole situated on the active layer and exposing the drain electrode and the active layer; and forming a pixel electrode on the passivation layer through a fourth mask process, the pixel electrode connected to the drain electrode through the contact hole.