Liquid crystal display device

A liquid crystal display device comprising:

• a first substrate;
• a second substrate;
• a liquid crystal composition sandwiched between said first substrate and said second substrate;
• scanning signal lines, video signal lines and counter signal lines all of which are provided on said first substrate;
• pixel areas surrounded by said scanning signal lines, said video signal lines and said counter signal lines;
• thin-film transistors provided in said respective pixel areas and driven by scanning signals from said scanning signal lines;
• pixel electrodes to which video signals from said video signal lines are supplied via said respective thin-film transistors;
• counter electrodes spaced apart from said pixel electrodes and connected to said counter signal lines;
• a common line which electrically connects said counter signal lines;
• and
• a protection element line formed around a display area in which said pixel areas are arranged,
• said protection element line being connected to said video signal lines and said scanning signal lines by non-linear elements, and
• said protection element line being connected to said common line via a high-resistance element.

A liquid crystal display device comprising:

• a first substrate;
• a second substrate;
• a liquid crystal composition sandwiched between said first substrate and said second substrate;
• scanning signal lines, video signal lines and counter signal lines all of which are provided on said first substrate;
• pixel areas surrounded by said scanning signal lines, said video signal lines and said counter signal lines;
• thin-film transistors provided in said respective pixel areas and driven by scanning signals from said scanning signal lines;
• pixel electrodes to which video signals from said video signal lines are supplied via said respective thin-film transistors;
• counter electrodes spaced apart from said pixel electrodes and connected to said counter signal lines;
• a common line which electrically connects said counter signal lines;
• a first protection element line connected to said video signal lines by diodes;
• and
• a second protection element line connected to said scanning signal lines by diodes, wherein
• said first and second protection element lines are connected to a common line, and
• said first protection element line and said second protection element line are connected via high-resistance elements.