Patent ID: 7701522

Claim:
An active matrix liquid crystal display device, comprising: a plurality of signal lines and scanning lines which are arranged in a matrix state on a substrate; thin-film transistors (TFTs) arranged near the intersection of each of said signal lines and said scanning lines; and pixel electrodes that are severally arranged in positions surrounded by each of said signal lines and said scanning lines and connected to said TFTs, for display that contributes to display, which is provided in an effective display region, and a dummy pixel electrode that does not contribute to display, which is provided in a non-effective display region, wherein said dummy pixel electrode has a smaller area than the area of said pixel electrode for display and a plurality of dummy pixel electrodes are in parallel to each other and perpendicularly arranged along each of the signal lines for protecting TFTs connected to said pixel electrodes for display from destruction due to static electricity, wherein source electrodes and gate electrodes of TFTs of said dummy pixel electrodes are connected in parallel to said signal lines and connected in parallel to said scanning lines, respectively, and wherein auxiliary capacitance electrodes are provided under drain electrodes of the TFTs of said dummy pixel electrodes.