Patent ID: 7502020

Claim:
A liquid crystal display device, comprising: a liquid crystal display panel having a liquid crystal cell matrix; a power supply generating a common voltage; common lines directly on a substrate of the liquid crystal display panel and connected to a common electrode of the liquid crystal cell, wherein the common lines include a first common line at one edge of the substrate of the liquid crystal display panel and connected to one side of the common electrode and a second common line at another edge of the substrate of the liquid crystal display panel and connected to another side of the common electrode; and a common voltage compensator for compensating for the common voltage using a large resistance with a value greater than a combination of resistances of the common lines and the large resistance directly between the power supply and the common lines, wherein the common voltage compensator includes: a first resistor having a large resistance with a value greater than a combination of resistances of the first common line between the first common line and the power supply; a second resistor having a large resistance with a value greater than a combination of resistances of the second common line between the second common line and the power supply; and a third resistor controlling a difference of the common voltages applied to the first and second common lines between the first resistor and the second resistor.