A liquid crystal display device having a switching device with a first electrode connected to the scanning line to become a gate, a second electrode connected to the signal line to become a drain or a source, a third electrode connected to the pixel electrode to become the source or the drain and switching the display signal to feed the corresponding pixel electrode by the scanning signal; and an electrode for an auxiliary capacitor, located in a place opposite to the pixel electrode to define the auxiliary capacitor. Further, the second and third electrodes are formed in a layer different from the first electrode, the pixel electrode is formed in top of the first, second, and third electrodes, and the electrode for an auxiliary capacitor is formed on the same layer as the first electrode.