Patent ID: 6912024
Filing Date: 2005-06-28
Classification: G02F

Abstract:
1. A liquid crystal display device having a thin film transistor on color filter structure array substrate, comprising: a gate line and a gate electrode on a substrate, the gate line and the gate electrode being formed of a light-shielding material; a color filter layer on the substrate, covering edge portions of the gate line and the gate electrode; an overcoat layer over the substrate covering the color filter, the overcoat layer having openings exposing portions of the gate line and the gate electrode; a gate insulating layer on the overcoat layer, the color filter layer, the gate line, and the gate electrode; a semiconductor layer on the gate insulating layer, wherein the semiconductor layer has a width smaller than the gate electrode; source and drain electrodes on the gate insulating layer, contacting portions of the semiconductor layer, wherein the gate electrode, the semiconductor layer, the source electrode, and the drain electrode constitute a thin film transistor; a data line on the gate insulating layer, extending from the source electrode, crossing the gate line, and defining a pixel region; a passivation layer covering the thin film transistor and the data line and having a drain contact hole exposing a portion of the drain electrode; and a pixel electrode on the passivation layer, contacting the drain electrode through the drain contact hole.