Patent ID: 7435631

Claim:
A method of manufacturing a liquid crystal display device (LCD), the method comprising: forming a semiconductor layer and a first conductive material on a substrate and using a first diffraction mask to form an active layer containing the semiconductor layer and a stack of an active pattern and a first capacitor electrode containing the semiconductor layer and the first conductive material; forming a first insulating layer on the substrate; forming a second conductive material on the substrate and patterning the resulting structure to form a gate electrode and a second capacitor electrode; ion implanting the active layer to form a doped active layer; forming a second insulating layer and a photoresist on the doped active layer; forming first and second contact holes that penetrate the first and second insulating layers to expose the active layer; forming a third conductive material on the photoresist with the first and second contact holes to form first and second connection electrodes on the exposed active layer; forming a transparent conductive electrode material and a fourth conductive material on the second insulating layer; and using a second diffraction mask to form a pixel electrode and a stack of first and second transparent electrode patterns and source and drain electrodes.