A liquid crystal display and a fabricating method thereof that are capable of realizing a high aperture ratio as well as implementing a high-density storage capacitor. The liquid crystal display is provided with a data line supplied with a data signal, a gate line supplied with a scanning signal, a pixel electrode for driving a liquid crystal cell, and a thin film transistor for applying the data signal to the pixel electrode in response to the scanning signal. In the liquid crystal display, a gate insulating film covers the gate line. A storage electrode is formed at the interior of the gate insulating film to overlap with the gate line. Accordingly, the storage electrode is formed within the gate insulating film to reduce a thickness between the conductive materials, thereby increasing a capacitance value. As a result, the storage capacitor area is set to a small size to thereby improve an aperture ratio.