Liquid crystal display device and fabricating method thereof
First Claim
1. A method of fabricating a liquid crystal display device, comprising:
- forming a gate pattern including a gate line, a gate electrode and a lower storage electrode on a substrate using a first mask, the gate line and the gate electrode being formed of a double-layer having a transparent conductive layer, and the lower storage electrode being formed of the transparent conductive layer;
forming a gate insulating film on the gate pattern;
forming a semiconductor pattern and a source/drain pattern having a data line and source and drain electrodes on the gate insulating film using a second mask, the data line defining a pixel region with the gate line;
forming a protective film on the source/drain pattern, and forming a contact hole exposing the drain electrode using a third mask; and
forming a pixel electrode connected to the drain electrode via the contact hole on the protective film and overlapping with the lower storage electrode using a fourth mask,wherein the portion of the gate insulating film over the lower storage electrode is exposed by using the second mask, and a portion of the protective film is formed on and in contact with said portion of the gate insulating film; and
wherein the portion of the pixel electrode overlapping with the lower storage electrode forms an upper storage electrode.
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Accused Products
Abstract
A thin film transistor substrate of a LCD device and a fabricating method thereof are disclosed for simplifying a fabricating process and enlarging a capacitance value of a storage capacitor without any reduction of aperture ratio. The LCD device includes: a double-layered gate line having a first transparent conductive layer and a second opaque conductive layer, the second opaque conductive layer have a step coverage; a gate insulation layer film on the gate line; a data line crossing the gate line to define a pixel region; a TFT connected to the gate line and the data line; a pixel electrode connected to the TFT via a contact hole of a protective film on the TFT; and a storage capacitor overlapping the pixel electrode and having a lower storage electrode formed of the first transparent conductive layer.
62 Citations
17 Claims
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1. A method of fabricating a liquid crystal display device, comprising:
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forming a gate pattern including a gate line, a gate electrode and a lower storage electrode on a substrate using a first mask, the gate line and the gate electrode being formed of a double-layer having a transparent conductive layer, and the lower storage electrode being formed of the transparent conductive layer; forming a gate insulating film on the gate pattern; forming a semiconductor pattern and a source/drain pattern having a data line and source and drain electrodes on the gate insulating film using a second mask, the data line defining a pixel region with the gate line; forming a protective film on the source/drain pattern, and forming a contact hole exposing the drain electrode using a third mask; and forming a pixel electrode connected to the drain electrode via the contact hole on the protective film and overlapping with the lower storage electrode using a fourth mask, wherein the portion of the gate insulating film over the lower storage electrode is exposed by using the second mask, and a portion of the protective film is formed on and in contact with said portion of the gate insulating film; and wherein the portion of the pixel electrode overlapping with the lower storage electrode forms an upper storage electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification