Liquid crystal display device and fabricating method thereof
AssigneeLG Display Co., Ltd.
InventorByung Chul Ahn
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Abstract
A liquid crystal display device and a fabricating method thereof for simplifying a process and improving an aperture ratio are disclosed, including forming a first mask pattern group including a gate line, a gate electrode and a common line; forming a second mask pattern group including a semiconductor pattern and a source/drain pattern having a data line, a source electrode and a drain electrode overlapped thereon on the gate insulating film using a second mask; and forming a third mask pattern group including and a pixel electrode making an interface with the protective film in the pixel hole to be connected to the drain electrode, thereby forming a horizontal electric field with the common electrode, using a third mask.
Claims18
A liquid crystal display device, comprising:
- a gate line on a substrate in a double-layer structure having a first transparent conductive layer and a second opaque conductive layer;
- a data line crossing the gate line with a gate insulating film therebetween to define a pixel area;
- a thin film transistor including a gate electrode connected to the gate line, a source electrode connected to the data line, a drain electrode connected to the source electrode and a semiconductor pattern for defining a channel between the source electrode and the drain electrode;
- a common line on the substrate in the double conductive layer structure in parallel to the gate line;
- a common electrode provided by an extension of a first conductive layer of the common line in the pixel area;
- a protective film on the thin film transistor and the data line;
- and
- a pixel electrode in a pixel hole passing through the protective film in such a manner to make an interface with the protective film and connected to the drain electrode, the pixel electrode being formed a horizontal electric field with the common electrode.
Dependencies are inferred from the claim text.