A liquid crystal display device includes first and second substrates, a liquid crystal layer, a plurality of video signal lines and scanning signal lines formed on the first delimiting pixel regions, a plurality of video signal line driving circuits, and a thin film transistor formed in the pixel regions, and driven by a scanning signal from a scanning signal line. A display area contains a plurality of the pixel regions and a first and second protection element lines are formed at a peripheral portion of the display area and connected to the video signal lines by first and second high-resistance elements. A first circuit board is electrically connected with a portion of the video signal line driving circuits and a second circuit board is electrically connected with another portion of the video signal line driving circuits.