US 2006/0139504 A1 · Liquid crystal display device and fabricating method thereof

Abstract

A thin film transistor substrate for applying a horizontal electric field 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 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 electeode; a common line on the substrate; a common electrode in the pixel area; and a pixel electrode in the pixel area to form a horizontal electrode field with the common electrode, wherein the data line, the source electrode and the drain electrode have an opaque conductive 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.

Claims23

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;
a common line on the substrate;
a common electrode in the pixel area;
and
a pixel electrode in the pixel area to form a horizontal electrode field with the common electrode,
wherein the data line, the source electrode and the drain electrode have an opaque conductive 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.

5 more elements

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

a first mask process of forming a first mask pattern group including a gate line, a gate electrode, a common line and a common electrode on a substrate;
a second mask process of forming a gate insulating film on the first mask pattern group and a semiconductor pattern and an opaque conductive pattern on the gate insulating film;
and
a third mask process of forming a transparent conductive pattern on the opaque conductive pattern and forming a protective film having a border with the transparent conductive pattern,
wherein a data line crossing the gate line, a source electrode and a drain electrode are formed of a double-layer structure having the opaque conductive pattern and the transparent conductive pattern, and a pixel electrode is extended from the transparent conductive pattern of the drain electrode to form a horizontal electric field with the common electrode.

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

Claims23