Patent ID: 7936405

Claim:
A liquid crystal display device, comprising: a thin film transistor (TFT) substrate including a substrate and a display pixel arranged in a matrix form on said substrate, with said display pixel including a plurality of scanning lines, a plurality of signal lines, a plurality of pixel electrodes, a plurality of thin film transistors and a first common electrode; a counter substrate opposed to said TFT substrate and being stuck therewith; and a liquid crystal enclosed between said TFT substrate and said counter substrate, wherein one of said pixel electrodes and said first common electrode are arranged so that an electric field along a principal plane of said TFT substrate can be applied to said liquid crystal, a second common electrode for inputting a common electric potential is formed on said counter substrate, said second common electrode is opposed to said first common electrode, and a conduction part for electrically connecting said second common electrode and said first common electrode mutually and transmitting said common electric potential to said first common electrode is formed near each display pixel or near a predetermined display pixel, wherein said pixel electrode and said first common electrode are provided with a comb-tooth-shaped portion projected into a display area of each display pixel, respectively so that an electric field along a principal plane of said TFT substrate can be applied to said liquid crystal thereby, wherein said comb-tooth-shaped portion of said pixel electrode and said first common electrode are formed in a same layer, wherein said pixel electrode includes a storage capacitance formation part for forming a capacitance with said first common electrode, and a conductive part for electrically connecting said comb-tooth-shaped portion of said pixel electrode and said thin film transistor mutually, said comb-tooth-shaped portion of said pixel electrode is formed in a different layer from said storage capacitance formation part of said pixel electrode and said conductive part, and said comb-tooth-shaped portion of said pixel electrode, said storage capacitance formation part of said pixel electrode, and a conductive part of said pixel electrode are electrically connected mutually via a contact hole, respectively.