US 2006/0138417 A1 · Liquid crystal display device and fabricating method thereof

Abstract

A thin film transistor substrate and a fabricating method thereof for simplifying a process are disclosed. In a liquid crystal display device according to the present invention, a gate line is provided on a substrate. A data line crosses the gate line with having a gate insulating film therebetween to define a pixel area. A thin film transistor includes a gate electrode connected to the gate line, a source electrode connected to the data line, a drain electrode opposed to the source electrode and a semiconductor layer for defining a channel between the source electrode and the drain electrode. A pixel electrode is connected to the drain electrode and is provided at said pixel area. Herein, said data line, said source electrode and said drain electrode have a double-layer structure in which a source/drain metal pattern and a transparent conductive pattern are built. Said pixel electrode is formed by an extension of the transparent conductive pattern of the drain electrode. A protective film makes a border with the transparent conductive pattern and provided at the remaining area thereof.

Claims20

Dependent claims

A liquid crystal display device, comprising:

a gate line on a substrate;
a data line crossing the gate line having a gate insulating film there between to define a pixel area;
a thin film transistor including a gate electrode, a source electrode a drain electrode and a semiconductor layer to define a channel between the source electrode and the drain electrode;
and
a pixel electrode connected to the drain electrode,
wherein the data line, the source electrode and the drain electrode include a double-layer structure having a source and drain metal pattern and a transparent conductive pattern, the pixel electrode is formed by an extension of the transparent conductive pattern of the drain electrode, and a protective film borders with the transparent conductive pattern and in the remaining area thereof.

3 more elements

A method of fabricating a liquid crystal display device, comprising:

a first mask process of forming a gate line and a gate electrode connected to the gate line on a substrate;
a second mask process of forming a gate insulating film on the gate line and the gate electrode and a semiconductor pattern and a source and drain metal pattern on the gate insulating film;
and
a third mask process of forming a transparent conductive pattern on the source and drain metal pattern and forming a protective film having a border with the transparent conductive pattern,
wherein a data line crossing the gate line to define a pixel area, a source electrode and a drain electrode include a double-layer structure having the source/drain metal pattern and the transparent conductive pattern, and a pixel electrode extended from the transparent conductive pattern of the drain electrode is provided in the pixel area.

2 more elements

Dependencies are inferred from the claim text.

Liquid crystal display device and fabricating method thereof

Life of this patent

Liquid crystal display device and fabricating method thereof

Life of this patent

Abstract

Claims20