Patent ID: 7551169

Claim:
A liquid crystal display device comprising: a first substrate including a plurality of drain signal lines, a plurality of gate signal lines, and a plurality of reference signal lines; a second substrate; a liquid crystal layer sandwiched between the first and second substrates; and a plurality of pixel regions formed to be surrounded by video signal lines and scanning signal lines, each pixel region including at least a switching element, a pixel electrode and a reference electrode, wherein said switching element is operated in response to scanning signals from one of the gate signal lines, said pixel electrode is supplied with video signals from one of the drain signal lines via said switching element, and said reference electrode is supplied with reference signals via one of said reference signal lines, said video signals from said one drain signal line are generated by a driver chip mounted on said first substrate, said one drain signal line and said one reference signal line have a high resistance and a low resistance respectively, and out of said one drain signal line and said one reference signal line, an average voltage amplitude per one frame applied to one of said signal lines having the low resistance is larger than an average voltage amplitude per one frame applied to the other one of said signal lines having the high resistance.